Kết tủa điện hoá hợp kim w co lên nền thép trong dung dịch nước để chế tạo và phục hồi chi tiết máy bền nhiệt ăn mòn mài mòn

Ten de tai: "KET TiJA DIEN HOA HOP KIM W — Co LEN NEN THEP TRONG DUNG DICH NU'dC DE CHE TAO VA PHIJC HOI CAC CHI TIET MAY BEN NHIET, AN MON, MAI MON" Chu nhi'em de tai: KS Bui Trong Tai Vien KTND & BVMT Thanh vien de tai: Vien KTND & BVMT TT Vu HVKTQS TT Thi nghiem dien Vien KTND & BVMT CTy Thiiy tinh Go Vdp ThS Tr'An Dinh Hien ThS Bui Trong Tudn KS Le Dinh Dan KS TrAn Quo-c Viet KS Do Dinh Tuyen Cd quan thtic hien: Vien Icy thu4t Nhiet ddi & Bic) ve Mei truldng Tp HCM Cd quan quan IS,: Sac Khoa hoc va Cong nghe Tp HCM Thdi gian thlic hien: Tit 01/2004 den 06/2006 § MCC L UC § LOI NOI EAU Trang Phan A: TONG QUAN I Dac dam clia mg hop kim W-Co Ccic doi tvcing cu the de cip dung ke't qua nghien cau Phan B: THUC NGHIEM I Phu mg phcip nghien cau II Thi nghienz so' bC2 Izta chon dung dich mg hop kim III Nghien catz anh lizOng cag thank plzein dung dich, the (10 ma den thank phdn hap kim ren cc sa dung dich amonicitrat 3.1 Anh httang cua sit thay doi nOng Na 2W04 den % W hop kim 3.2 Anh hunng ciia mat dO dOng den pha'n hop kim 3.3 Anh huang cua nhiet dO ma den trang thai 136 mat, 18 x6p va kha nang barn dinh 3.4 Xac dinh kha nang phan 136 cila dung dich ma hop kim W-Co IV Khao sat tinh ming cc/4 hog (lig lop ma hop kim W-Co 13 4.1 Anh twang ciia chedO ram nhiet len dO cdng lOp ma 4.2 Danl.' gia kha nang bac) ve chOng an mon cila lOp ma hop kim 4.3 This nghiem kha nang bao ve mAu a nhiet dO cao cua lop ma hop kim va crom 4.4 Anh hue ng cua ch6dO gia nhiet den call true 'Op ma, khao sat qua hien vi dien tit quet:(SEM) va hien vi kim arcing V Thao luan ire ker qua nghien cau dung dich, chg de) ma, tin!: ming cc ly hog ciia lap mg hop kiln W-Co 24 VI Xcic lap quy trinh ma izqp kim W-Co cho piston, xi lanh, kich be phcio 122D74, co quan helm liii phcio cao xa 37, van xa lieu binh phcin zing san xueit duly tinh long 28 6.1 Be ma 6.2 Dien cut (+) 6.3 Mdu this nghiem 6.4 Ti6n hanh ma mdu 6.5 Quy trinh ma phuc hoi, bio quan piston, xy lanh ham Eli phao 37, kich be t5, phao 122 D74, van xi lidu binh phin ang san xua't thily tinh 6.6 Anh van xa khong ma, ma crom, ma hop kim trudc va sau thdi gian sir dung VII Dcinh gici kink to ky thuOt 35 VIII Phcin ke't luOn 36 8-1 TOng k6t de tai 8-2 Xac nhan k6t qui this nghiem, Ling dung ldp ma hop kim WCo vao san xua't Phan C: PHU LUC Dd cadng nghien cau 51 Bien bin nghidm thu giai doan 56 Hop (16ng nghien cctu khoa hoc 61 Anh chup hinh thai ldp ma lAng hidn vi then tit' quet SEM có phOng dai 5000 lAn hdp kim W-Co (%W 23) cac nhiet ram khac Anh chup hidn vi dien tit quilt SEM, hinh thai be' mat: Co nguyen chat, hdp kim W-Co (%W 15%) Vien K' Thitat Nhiiq Me;iTreering * Ld I NOI DAU Ma Wtrong dung dich mtdc khona th6 thtfc hien rieng re dttOc, no chi co th6 ket ttla dong thdi voi cac kim loai kliac de tao hOp kim Nhieu tac gia da nghien cdu qua trinh ma dien cua W vdi kim loai nhom sat[1,7, 22] Cac kim loai hop kim dttoc.sdp x6p pha trOn cac phan rieng biet hoac hon hop vo dinh hinh, hoac hinh dang muoi Nhieu tac gia da Ichang clinh hop kim W-Cola hcip kim cuing co d6 ben choeng an mon rat cao,h0p kim thu6c loai sieu ben nhiet d6 cao, ldp ma hop kim W-Co ddri thay cho kip ma crom vi no Ichgc pliuc dttdc nhfiing rihuoc diem cua ldp, ma crom nhu' kha nang phan 1)6' thap, nhieu 16- x6p anh huOng tdi kha nang bao ve cho'ng an mOn va tinh nang c019 thay dal lam viec d nhiet d6 rat cao, crac biet ma crom lam nhi e7m mai truOng hai sac khoe cho ngu'di tru'c ti6p ma Nghien aril ma hop kim theo huOng thay doi phan dung dich ma them cac chat pall co, vo co lam tang tinh nang qu9 cua ldp ma hop kim, ding vdi phan dung dich ma cac tac gia chti y tdi anh hu'Ong cua ch6 d6 ma, ch6d6 xit 19 nhiet, xit 19 mAti anh huOng toi chat lttong ldp ma [1, 22, 25] Qua cac tai lieu tham khao de tai (tat muc tieu nhanh chong Ling dung k6t qua nghien atu vao san xuat, de tai da tien hinh khao sat so b6 mot so dung dich va ch6d0 ma phu hop,vdi dieu lcien vat Whoa chat c6 tren thi tru'disIg Viet Nam, tit di sau vao kho sat danh gia sit phu thu6c giita phan, tinh nang co 19 cua lop ma hOp kim vao phan dung dich , ch6 c16, ma va ch6 d6 gia cong tru'dc va sau ma de,nang cao kha nang bao ve chong mOn, mat mOn, lam viec nhiet (16 cao cua cac chi ti6t dttoc ch6tao tit thep hop kim th4 Trude mat de tai thi6t lap du'oc quy trinh ma hop kim cho van nap, xa lieu cua binh phan ang ch6 tao thuy tinh long, xi lanh va pitston ham phao 37, ket qua nghien clu'oc d6 tai ma r'6ng On,„aclung cho cac chi ti6t khuon, thi6t bi chiu nhiet theo yeu cau cu the cua titng the loai De thu'c hien va hoan de tai nham nghien cat' cua Vien KTND & BVMTda nhan du'oc su' gity da qu9 bau caa, SO Khoa hoc Cong ripe ph61-16 Chi Minh bang viec cap kinh phi cho de tai hoat Orig De tai nhan du'oc su' chi dan he-tssac b6 ich cua HOi clong,xet duyet 146i clang nghiem thu giai loan va HOi dong nghiem thu de tai tai nhan dude nhitng nhan xet khach quan nhu'ng he's sac khich le cua cac gido su' tien sy phan bin de de tai thu'c hien tot hon De tai nhan &roc su' chi dao, dOng vien gitip dd cua lanh dao va tap the can b6 CNV Vien KIND & BVMT phong DO ben vat lieu kim loai Nhan dip k'et thilc de tai, xin thay mat nhorn can b6 nghien cau, chd nhiem de tai xin chan cam On sot gitip (la vo cung hieu qua d6 D6 tai chan cam on lanh dao, can b6 cong nhan vien cac nha may, co quan dal tac nhu' ;Wang sita chGa va khi, Xi nghicp lien hiep Z751, nha may hoa chat Bien Flea D'6ng Nai da tao dieu kien cho nghien citu, ring dung Viet: 10 Thu& Nhiet DUi & fltio Ve Trraug Phan A: TONG QUAN I DAC DIEM CUA M4 HOP KIM W-CO Dd ch6 tao cac chi tilt may b'jn nhiet, an mon, mai mon a cac nu'dc cong nghi'ep tien ti6n c6 nganh luyen kim phat tridn ngudi ta thudng sit dung cac vat lieu la the') hop kim hay kV kim cao cap: Xupap xi a Ong cd d6t la chi tilt lam vi'ec cli6u kiln nang nhdt vita chiu tai cao, nhiet dO 650700°C va bi an mon moi trudng ctia sin phgm chay, bi mai mon va dap, no chick ch6 tao tit hOp kim c6 cdu tit vonfram (B) 45x14B2M Cac canh tu6c bin a cac not hdi dudc lam tit thep 15xBHM4 c6 dO bi6n dang 0,1% sau 100.000 gid lam vi'ec a 540-560°C Hdp kim nimonic vdi phan chu ye-u g6m: Ni, Cr, Ti, Al c6 them W, Co, Mo lam tang dO b6n nong dude dung rOng rai cid ch6 tao cac chi tilt lam vi'ec a nhiet 'TO cao cac dOng cd ten lira, tu6c bin khi, tau vii tru Thep hop kim hoac hop kim c6 tinh nang co ly h6a cao gia dat vi vay san xudt nham giim gia nhung van dim bio chdt lu'Ong san pha'rn, nhiL trudng hop ngudi ta ap dung cac phdong phap fling nong hoac ma hop kim len cot thep, hoac dp dung cac cong nghe xit ly be mat nhd toi, ram, hoa, nhiet luy'en Tren the gidi viec ke-t tua dien hoa hOp kim W-Co dung dich nu'dc da dudc nghien cdu dda vao (frig dung san xudt tit nhGng narn sau mudi cua clidm not bat cita ldp ma nhu' dO cuing cac, nang the ky trudc nhang chiu mai mon, an mon, b6n mai tru' ng h6a chdt nhu' hop kim chda 35% W sau gia nhiet dO cirng c6 thd dat tdi 1300 KG/mm2 to-c dO an ram H,SO4 1:1 a 20°C la 0,16 mg/cm2ngay, coban nguyen chdt la 5,3mg/cm2ngay, niken nguyen chdt la 0,59mg/cm2ngay CS nhiet dO cao 700°C W nguyen chat bi oxy hoa nhu'ng hop kim W-Co thi khong Ldp ma W-Co c6 dac trdng iii tinh cao nen &roc sir dung dd ch6 tao tit cang cho cac thi6t bi thong tin, in an va thie-t bi din tit Ngay vi'ec nghien cdu and rOng nang ling dung cila ldp ma hip kim W-Co van dtroc ti6p tuc then cac hudng: - Dila them cac cdu tit kim loai, phi kim vao ldp ma dd tao vat lieu dang to hop c6 nhie'u tinh nang utu viet: tang dO deo, tang cdng, tang nang chiu h6a chdt nhd clu'a Bo, TiO2, SiC vao ldp ma - Dila cac chdt them tao phirc dd on dinh qua trinh ma hoac giim nhiet 10, tang gidi han mat dO dong nhd dung dich pirophotphat du'a them amonicitrat Viers Kv Thu& Nhiet Doi & Bdo Ve Mai Tniiing II CAC Dal Ric/NG CU THE DE AP DUNG KET QUA NGHIEN Ceti' Nghien cdu ma hop kim W-Co nham thay cho ldp ma crom ciIng phuc h6i kha nang lam viec be mat ben trong, viec ch6 tao mdi cac chi ti6t nhu' xi lanh kich cang phao 130, xi lanh kich be tSt phao 122 D74, xi lanh ddi th6 CX57, xi lanh piston co quan ham lai phao cao xa 37, cac chi tieet lam viec nhiet d6 cao, ap suet ldn nhu van xa binh phan Ong sin xua-t thay tinh long , binh hdp hoi autoclave Trudc mat de tai huOng tdi hai loai dal Wong cu thd sau: a Mg hqp kim W-Co phuc hoi kich thctoc, khd nang lam viec va the tgo mcri cdc chi tie't bi an man va mai man tnoi twang xelm th►,ec cao: - Xi lanh kich be tif, xi lanh ham lui cua phao 122 D74 ; 37 Vat lieu ch6 tao la loci the') cacbon tot 50A có phan % C 0,52-0,56 — Mn 0,50 — 0,80 vdi tinh nang cd ly gidi han bdri keo abk 107 N/m2 = 64 D6 dan dai tu'cing dal 5% =17, d6 cdng bd mat sau toi cao tan d6 tranh bie-n clang dat tdi 59-63 HRC - Can pitston cd quan ham lui phao 37 du'Oc ch6 tao tit thep hop kim 45X vdi phdn % C: 0,42-0,50, Si: 0,37-01,38, Mn: 0,50-0,80, Cr: 0,80-1,1, Ni: 50,25 Sau toi cao tan dd tranh bieen dang (00 L600) tinh nang co ly: c.b(gidi han chay) 107N/m2 = 85, obk 107N/m2 = 105, 5% =9 d6 cdng b8 mat 5863HRC Gidi han bdri mOi ctia truc trOn trdn tang len 1,3-1,7 Lan so vd: tru'dc toi.Sau qua trinh sit dung bao quan cac the loci chi tier tren ddoc clu'a vao sda chda phuc hoi, Mng thdi mot s6 nha may dang nghien cdu ch6 tao chi ti6t mdi de thay th6, xong gap nhidu khd khan drig dung ldp ma crom vi kha nang phan b6 tha-p , ma mat ctia xi lanh khong dam bao chdt ldong cho thi6t bi lam viec lau dai a mai truing heu bidn, chu ky tra lai xu'ang 12 thang hieu qua kinh t6 va phuc vu s'in sang chitin da-u khong cao, them chi ldp ma crom co nhi8u 15 tao nen hien tu'ong an mon clidm vao nen rat sau dan tdi viec khong the khac phuc sita chaa du'oc, anh hdang nhidu tdi chdt lu'ong trang bi cilia quan d6i va cac ldc luting vu trang - Kich be tS, va co au ham lui cilia phao la he th6ng thily ldc sit dung diu STEOLLM (dh xanh ngot) cd phAn sau: + Glycerin 46, 3% + C6n ethylic 19, 2% + K2Cr04 16, 6% + NaOH 0, 1% + Diethylamin photphat 0, 2% + Nudc cat" 32, 6% -3- Vien Thud' Nhial Doi & Bdo Ve Moi TrWing Be mat xi lanhbi an mon nhi'u nhdt khu uric pap ranh giga khong khi, zoang cao su va dau xanh rlot thdong to nhIrng 16 sau pbu thuoc vao theh gian va moi trtking lam viec De khdc phuc tInh tang ten de tai tien hanh nghien cdu ma hop kim W-Co phti len xi lanh thOp 50A va pitston thop 45X c6 kich thtidc 4)60, 1,600; 4)40, L600; ma phuc hot can dat 5001.1m, dO cling 9001000KG/mmh (Wang diking vdi lop dna crom ding), ma boo ye c6 chieu clay 15-25gm, dO cdug 900-1000KG/mm- Ichong 16 xop co kha nang phan va chong An mon tot crom, tang thOi gian chu k5, sita chga tg 12 thong len 36 thong Anh Xi lanh, piston co quan ham lui phao 37 Anh Anh Van binh phan tin sin xudt thtiv tinh 161.12 S6 (1): Trddc ma S6 (2): Sau ma b Mg hipp kim W-Co tang di) an doi vdi cdc chi ti'et lam viec dadi dp hfc ldn, nhiet d() cao mOi trading h6a chdt Van xi cua binh phin dng sin xudt thtly tinh long: binh co , kh6i lu'Ong 4m2, phan dng dttoc toP =12KG, t=200°, nguyen lieu gom NaOH = 15%, SiO2 Day lA chi tiet chiu mai mon chic% act ltic ldn nhdt xi lieu vi vay no thOng du'cic the too tit thep hop kim 18X2H4BA [16] hoac 25XrM [3] co dO thAm toi cua thep vao khoara 35-60mm, co tinh cd 19 aB ?_1150MPa [16] (TB ?_1200Mpa (2) cling co the sit dung thep hop kim 12XM4) hoac hop kim, 12XM4) crom , - Niken 40XH, 45XH, 50XH co ca tinh to hop cao dun4 cue ueche to chi tiet co thieet dien 40-50mm, co mat cua niken thep nen co dO dai U nhiet dO cao, sau qua trinh tot thdm gia ding nhiet 00 cting b8 mat ldn, nhu'ng vi gia cua sin,phdm daf t nen cac nha may h,da chit to 'a eking bang thep cac bon chat ldong thR5ng, co tinh thap oB P-1 380-490 Mpa 00 cdng HB< 200 Vdi vat lieu tren tuOi tho,cita van xi lieu rat thdp a-liking chi dim boo dutic 24 gi6 lam viec tuc De tai dat mac tieu tradc mast ma len phdn chop cila van xi 4)50L30 ldp hop kini.co chieu day 200 Lm, dO cdng dat &toe 900-1000 KG/mm- nham nang cao tuOt tho ctia van len lan Viet: K9 Thuds Nhiet DUi & Tido Ve Moi Tntentg Phan B: THUG NGHIEM I PHUING PHAP NGHIEN COI ChuSri bi mdu: Mdu thep CT3, 45X thick gia tong vdi kith thu'dc 30x50x2 Thiet lap sd quy trinh g6m bu'dc: Lam sach Cd hoc Dinh gia Bao quan Tdy and H6a hoc Xif1y, nhiet Tdy ri Hoa hoc Xti' lyt scr b Thao rd Ma hOp kim Be ma: Nhiia 100 x 200 x300 du'Oc (14 he th6ng on nhiet WERK Type 3230 Dien cu'c (+) lttdi Platin 30 x 50 Thi nghiem tham d6 xdc dinh dung dich ma vdi phdn kha thi Nghien cdu anh tiding cila tieing a dung dich, the (10 ma, ch6d0 xis 1y nhiet tdi: hieu sat ang, phAn hcfp kim ket taa, kha nang phan b6, tinh hang cci 1/ dia lOp ma nhu' (10 ctIng, d0 barn dinh, kha nang chiu nhiet, c10 ben axit, kiem, nirdc mu6i Cdc phu'cing phdp dinh Do cang: du'dc tren thiet bi EQUOTIP-2, may a cling Vicker vdi tai 50gam Kiem tra chat lwrig b4 mit lop mg: thqc hien theo TCVN 4392-86 phudng phdp tru'c quan - Do barn dinh gitta lop mg vg nen: chick kidm tra bang cac phuzing phdp (phu'Ong phap nong lanh, phu'Ong phdp mai dila, phu'ong phap uon mau) a Pluong phap flung: Nung nong mau to 250°C, gifii nhi6t dO 15 phdt, sau lay va nhung vao nadc c6 nhi6t 15-25 'C DO b8n barn dat n6u quan sat khong tha'y hi6n tu'ong bong trOc, rOp 16p ma Phtong phap icon mitt: U6n mat' cho (len gay - Mau ding ban (Jai: 40 x 15 x 1, the') 45X - Dung cu kidm tra: et& truc tron bang thep co dusting kinh 6mm, chi4u dai bang ma kep etd, kim det va dao -5- Vigil RJ Thwit Nhiet Doi & Rao Ve Moi Tritinto - Tidn hanh: Mdu kep chat gia'a hai truc dat ma kep eto, dung kim va dao uo'n mau di mot goc 90° v6 mot phia va uo'n theo phia ngu'Oc 14i cho toi mau gay, tai ch8 gay dung dao lcidm tra ben barn dm lop ma hOp kim voi nen thep - Danh gia: DO barn dinh dat ndu raid quan sat khong thdy hien tdong bong troc ldp m4 (hien tu'Ong ran nat lOp mad ch8 gay khong tinh ddn) Kierm tra de) to xdp lop mg hop kim: Phu'Ong phap (rat gidy thdm a Phu'Ong phap data tren stt tu'Ong tac hoa hoc caa kim loaf nen, day la Fe vdi chdt tha' tai nhang vi tril8 r8 caa ldp ma vOi dd nhUng hOp chdt co mau - Dung dich this: Ferixianua 10 g/l Natriclorua 20 g/1 - Cach Chit: Thdm u'Ot gidy thdm lAng dung dich tha' va dat len be mat chi tiet cho giu'a be mat chi tidt va gidy khong bot khi, vet ri in tren gidy du'di (Wig didm hoac dom Gidy thdm dutcsc nha-c khai be mat mau ra'a sach Wang nu'oc cat va say kho tren kinh sach, so diem xanh tren lcm2 dien tich gidy thdm du'Oc tinh la s6 didm 18 cila 14 m4 hop kim Thanh phdn hvp kim, phdn dung dich duOc xac clinh theo phu'Ong phap lu'ong phan tich h6a hoc va tap thu nguyen tit tren thief bi Varianspeetr AA (f.1c) Chap kim hong, Runghen: de phan tich to chtitc t6 vi va cdu trdc hOp kim Chugn bi mat': Mdu chup clu'Oc cat tit chi tidt ma, cho be mat phang caa lOp m4 vuong goc vOi mat phang caa mau soi, mau soi duvc dac vat lieu nhkra, mai va danh bong mau Dd tang dO arcing phan gifia lOp m4 va nen co thd tam thqc mau soi bAng dung dich h8n he Cita axit nitric va etanol ty le: 5/95 Kha nang phan bo'clu'oc xac clinh theo phudng phap Hering Blum - De) clanh gia kha nang ben mai mon: mau kim loci du'oc gia cong tam dem tren nap col nghien bi sit va hOp kim du'oc ma len be mat mau -6- Viet: M Thu& Nhiet Doi & Thio Ve Trolinz IL T111 NGHI$M SO BO LISA CHON DUNG DISH M4 HOP KIM Do the phong then ctia coban va vofram cach xa (-0,28v-0,58v) nen dung dich ddu có chit tao phirc kd ca dung dich axit Ira dung dich kidm: amonicitrat, pirophotphat, mu6i tatrat, amonihydroxit Dd giam nhiet TO ma mot s6 cong trinh nghien ctu da" data nheng phAn tao phdc he mdi vao dung dich [22] nhu' 1,6 amonihecxan va 1,8 diamonioctan vdi hiong rat nhO da dat hieu qua cao Qua tim hidu vat ttt hoa chit hien co tren thi trtrang Viet Nam va trao cloi tren mang thong tin, a tai da" chan bi cac loci dung dich sau dd khdo sat so bO Dung dich 1: Dung dich amoniac Thanh phdn dung dich va ch6 dO ma: CoSO4.7H,0 17 (g/1) Na,W04.2H20 48, (g/1) (NH4)2SO4 250 — 300 (0) Amoniac (25%) 120 ml NaOH 10 DK(A/dm2) 8-1 T(" C) 50 - 60 Dung dich cho Idp ma nhin bong vdi chidu day < 15pm, philn hop kim phu thu6c vao t5, le W/Co dung dich va phu thuOc vao n6ng d6 (NH4)SO4 VI n6ng d6 W, Co dung dich alp nen ma day ?_ 15pm lop ma bi gai nhi6u Dung dich 2: Dung dich pirophotphat Thanh phdn dung dich va the d6 ma: Na4P207.10H20 60 (g/l) CoC12.6H20 (0) Na2W04.2H,0 18 (g/l) Citrat amoni 11 (g/1) DK(A/dm2) khuiy 0,5 - T("C) 40 pH 9, -7- c Mg hqp kim W — Co len thep tle che tgo cdc clzi tiet ccia thiet bi phai lam viec nhiet cao, dp slat cao: Doi tudng cu thd la van xa cua binh phan eng san xuat thuy tinh long: binh c6 khOi ludng 4m3 , phan irng dut fc trio P = 12KG t 200°C , NaOH = 15% , Si02 , hien van xi dttdc chd tao bang thep cacbon C45 chiu tac dOn2 mai mon cua Si02, an mon ctia kiem du'di dp suat va nhiet d6 cao nen sau 24 2id lam viec phai thay van moi, tren the gidi thu'dng 6ng clan hdi va van xa dttcic chd tao tit the') 12XMGD du'dc toi tharn nen co tu6i tho cao - D6 tai tidn hanh ma hdp kim W -Co len van xi the!) C45 c6 kich thu'oc: = 50, L400, phan ma hInh chop non L I = 30, chiu day ldp ma hdp kim 200p.k, d6 cdng can dat 900-1000KG/mm , muc tieu la nang thdi gian lam viec len > 100gid - De' tai tie'n hanh this nghiem ma hdp kim W — Co phuc hoi kich thirdc va kha lam viec ciia cum phat h6a DKZ 85 hoac 6ng phut ten lila khong, dieu khidn C5M, vat lieu chd tao la loai thep biet ben mei tru'dng xam thqc a nhiet (16 va dp suit ldn, mot cac loai vat lieu la nimonic 100 vdi chat them W, Mo, Co de' tang kha nang ben nhiet De tai ti6n hanh this nghiem tren nhting Ong phut ten lila da bi loai 1)6 vi han ri c1 co thd khicc phiic sai Lech v6 kich thu'dc, be' mat phia cua 6n2 = 8, L50 lam viec chiu ap hic hang tram at, nhiet d6 be mat hang ngan "C, chiu tac nhan an men cua san pharn thu6c phong chay, thdi gian lam viec < 20 giay Phtidng phap nghien cilu a Chan bi mau: Mau thep CT3, 30XH3A vdi kich did& : 30 x 50 x b Thidt lap sd d6 quy trinh : G6m bu'oc Lam sach cd hoc Tay and h6a hoc Tay ri hoa hoc Xif ly sd bO Danh gia Bao quan Xir ly nhiet Thao rd Ma hdp kim c Thi nghiem tham de dd xac dinh dung dich vdi phAn kha thi d Nghien cau anh hu'ang caa phan dung dich, n6ng dO chat them , chd d6 ma tai phan hdp kim - Nghien cdu anh hu'ang ciaa phan dung dich, chd de ma, phumg phap xir 15 mau, xi? 1j, nhiet anh hiking tdi hieu sat deng va kha nang phan b6, tdi tinh nang cd 15, cila ldp ma nhd d6 cirrig , dO barn dinh kha nang chiu nhiet, dO ben axit, ki6m, nu'oc -53- Pinions! phap danh - Do cling du'oc tren thidt bi EQUOTIP-2 Kim tra chdt lu'Ong be mat ldp ma, thu'c hien theo TCVN 4392-86: phu'ong phap tru'c quan Kim tra barn dinh eifia ldp ma vdi nen xi? dung cac phuOng phap sau: Phu' ng phap nong lanh, phuong phap dila mai, phu'ong phap u6n mdu Kim tra to x6p Wang cach dat gidy thdm c6 tam hoa chdt tao sti tuong tac hoa hoc vdi nen a ch'6 to r6, dtidc nhan bidt qua bidricl6i mau Kim tra C'ng sudt not cua ldp ma theo phuOng phap cat6t cong Thanh phan hcfp kim, phan dung dich dudc xac dinh theo phudng phap lu'ong, phan tich hoa hoc va hap thu nguyen Chup kim tudng, rdn ghen de phan tich to chti'c td vi va cdu truc hOp kim Kha nang phan b6 du'dc xac dinh theo phu'dng phap Hering Blum - Dd giam bdt s6 thi nghiem se xii dung phudng phap Hull, ma dudc tidn hanh tren binh Hull MI qua san phSm dat dole Ldp ma tren mau this CT3 va thep hOp kim 30XH3A dat du'Oc tinh nang ky- thuat sau DO barn dinh gifra lop ma va nen dat theo tieu chugn this nghiem TCVN 439286 khong bong khai nen be gap, khong rop thit nong lanh, khong bong mai theo chd (la ti'? nghiem - Chi6u day khong 18 dat theo tieu chua'n cua ldp ma phuc hoi (20ptm) Chi6u day lop ma dat theo tieu chuan ma phuc h6i 50 — 250 p.m - Ben moi tru'dng xam thtfc cao: H,SO4, HNO3, NaCI 3% gap Ian ldp ma niken, 10 kin lop ma coban c6 cung chi6u day - D6i vdi san phgm cu the: a- Xy lanh kich be tjf sau ma hop kim du'oc nap au xanh ngot, thic nghirn to sttdng mu6i so sanh vdi ldp ma crom cang, yeu cau dat duOc thOi gian xudt hien gi ch'arn hdn 14 ma crom Ian (ma crom theo quy trInh cua nganh stag chaa vu khi) b- Van nap lieu cua thing phan ging san xudt thily tinh long c6 ldp ma hap kim tang tu6i tho len lan so voi khong c6 lop ma c- Ong phut ten 16'a vac vai C5M: Sau thii nghiem theo phuong phap chuyen nganh sai lech kich thuac cua o'ng phut c6 ldp ma hop kim gioi han cho phep 10 Kha nang chuy‘n giao ket qua nghien tinh ky thuat cao song qua trinh kdt tug dien hoa dai Hop kim W có nhfing hoi kha nang tay nghe, kien thik va cac trang thidt bi danh gig dac can thiet, vi vay hoan de tai Vien Ky thuat nhiet ddi & Bao ve mai trilling chiu trach nhi'e'rn tridn khai tren he thong ma clu'oc thidt lap a xuang san xudt thil* dd -54- phuc vu trkfc tiep cho cong nghiep, kinh t6 va quo-c phonz Sau On dinh du'ac cac thong s6 ding nghe se tien hanh ban giao cho cac nha may quan skr va dan su' nhu: A41, A42, Z751 Kha nang mang lai hieu qua kinh to cao dac biet khau cha &ling qua trinh san xudt, tang chdt lung san pha'm va ti6t ki6m ngoai t'6 nhap thiet bi 11 Ke- hoach thtic hien va chi tie't kinh phi chimg toi da trinh bay a muc 21 (IV) va phan V+ phu 1uc ciia thuy6t minh de tai -55- Uy ban Man dan Tp H6 Chi Minh SO KHOA HOC VA CONG NGHE CONG HOA XA HOI CHU NGHIA VIET NAM D6c lap - Tu - Hanh phuc Tp Ha Chi Minh 17 thang5 mini 2005 BIEN BAN NGHIEM THU GIAI ROAN HOT BONG SO 222/HD-SKHCN NGAY 02/12/2003 Can dr Hop d6ng nghien ccru khoa hoc Ira triAn khai ding nghe so : 222/ HDSKHCN 02 thang 12 nam 2005 dugc ky Ick gala Sa Khoa hoc va C6ng nghe va Vien Ky Thuat Nhiet dai va Bao ve Mai truarng ; Can dr Quy6t dinh s6 : 119/QD-SKHCN PhO Giam doe Sor Khoa hoc va C6ng nghe 14, 10 thdng 05 nam 2005 Nia viec lap H6i d6ng khoa hoc nghiem thu giai doan & tai: "Kat tiia din hod hop kim W — Co len nen thip dung dich tur de de chi' tao va phuc h'di s cdc chi tiit may b"n nhiet, an man, mai man", KS Bid Trong Tai lam chit nhiem de tai Th?ri gian : gitr 00 , 17 thang 05 nail' 2005 Dia diem : S& Khoa hoc va Cong nghe Tp.HCM Thanh phen hOi deng Om: TS TRAN TRI LUAN UV BCN Chuang trinh Vat lieu Mari PGS.TS VU D1NH HUY TS NGUYEN KHIJONG Chu tich Khoa CNVL - Throng DFIBK Tp.HCM Chu nhiem B6 mon Dien hod - Tnrarng Dai hoc Su pham Tp.HCM 4.PGS.TS NGUYEN DiNH SOA Khoa Khoa hoc img dung - Throng DH CN Ton Dix T11.'ng TS NGUYEN HONG DU' PGD Trung tam Nhiet doi Viet — Nga KS TA VIET CHIEN GD XN &la Chita va Khi — XNLH Z751 KS NGUYEN MINH QUAN Nha May A.41 — Quan chung PK —KQ Phan bien Phan bien TS NGUYEN THANH LOC PhO tnrang Khoa CNVL — DHEK KS NGUYEN WAN THANH Phang Quan ly Khoa hoc, Sa KH&CN TP.HCM Uy vien Uy vien Thu lc)", Uy vien Uy Uy vien Uy vien Dai bieu tham du : ThS Phan Thu Nga CN Do Thi QuS,nh Huang TS HuSrnh Bach Rang Tnrong Phong QLKH - S6( KH&CN Phang QLKH - so' KH&CN Trung Tam KHKT & CNQS -56- Ban Chti nhiOn a tai va CTV : KS Bui Trong Tai THS TrAn Dinh Hien THS Bui Trong Tuan KS Le Dinh Dan KS TrAn QuOc Viet KS D8 Dinh Tuyen Vien Ky Thuat Nhiet dori va Bao ve Moi tnramg Vien Ky Thuat Nhiet dori va Bao ve Mai truOng TT Vu !chi HVKTQS TT Thi nghiem dien Vien Ky Thuat Nhiet dati va Bao ve Moi trugng Cong ty ThuY tinh Go Vap I- MO DAU : KS Nguyen Tun Thinh — vier' Thu 14 HOi dOng : Doc Quyet dinh lap HOi dOng Nghiem thu giai doan I, giai thieu phAn dai Neu tham du TS Tran Tri Luan — Chu tich HOi citing : De nghi chu nhiem de tai trinh bay tom tat ket qua nghien eau giai doan va de nghi Hoi dong gap Y tap vao cac van de can trien khai nghien cuv tiep thai gian tad II- BAO CAO KET QUA NGHIEN CITU : KS Bai Thing Tai — Chit nhqm de tai: Cdc not dune da thtrc hien Crone giai doan 1: - Tham khao tai lieu ma hap kim W — Co, nhang kha nang img dung dm no - Tim hieu nhimg thong ‘so co ban dm san pham can img dung ket qua nghien dru Tim hieu vat to hod chat va kha nang dap frng cua thi tnramg - Thi nghiem sa bO va dinh huong nghien ciru Tren ca so lc& qua lchao sat sa b0 de tai da lua chon he dung dich nghien dm: - Anh huang dm dung dich tad phan hop kim - Anh htrong cau the dO ma tai phan hap kim - Anh huarng cua the dO gia nhiet toi tinh nang ca lY dm lop ma Sau lua chon dugc dung dich va che dO ma de tai da ma mau de danh gia kha nang bao ve chong an mon, mai mon, dO Cdc not tap trunR nghien c(ru giai doan 2: Thu nghiem danh gia van xa binh phan irng san xuat thug tinh long: • Do tinh nang ca 1Y, thir dO barn dinh • Thir kha nang lam viec thuc to vad P=13KG; t= 200oC, NaOH 20% • Tinh chieu day can thiet cho lop hop kim, cho lam viec>100 Thir nghiem phuc hOi xylanh kich be ty phao cao xa 37 Thies lap quy trinh ky thu4t ma hgp kim vad loaf san pham ten Xay dkmg hoan chinh va on dinh quy trinh ma hoplim W — Co nham phuc hei va the tao cac chi tiet, thiet bi lam viec o nhiet dO cao, tac nhan an mon, mai mon lam Bao ca nghiem thu III- HO BONG GOP Y : -57- TS Nguyen Khtro'ng - Phan bin (Dinh kern bai nhan xet chi tik) Trong giai doan tac gia da nghien ciru va thi nghiem khao sat mot s6 ket qua nhu sau: Ch9n lira dirge phdn dung dich ding nhu xac dinh dugc cac tham s6 can thiet de thu lap maw — Co co phan thich hap va chat luting cao phi hop vai yeu cau san xuat Lap ma W — Co ten thep cacbon vai ham lugng W 40% CO kha nang chong an mon cao tong cac mai truang da chon Kha nang chiu mai mon cao a nhiet d6 cao so vai lop ma crom ding d6 day va thu dtrgc dieu kien tieu chuan Tac gia ding da khang dinh dirge lop ma hap kim w — Co CO nhieu tru diem va CO kha nangthay teh6 lap ma crom mot so chic nang Icy thuat nhu ma phiic hoi chi tiet may lam viec a nhiet d6 cao Tac gia ding da buerc dau hinh dirge quy trinh ma hap kim W — Co vai muc dich ma phuc hoi xylanh hay kich be ty phao 37mm cling nhu ma van xa lieu mai dung cho birth phan ling san xuat thug tinh long Tac gia da hoan mot Ichoi luting cong viec tucmg doi lan, citing tien d6 va thai gian theo quy dinh De tai da hoan tot nhiern vu de ra, de nghi dirge nghiem thu giai doan va cho phdp fie'n hanh giai doan M6t so de nghi: M6i tnrang pH dung dich nghien ciru c6 anh huang gi de chat lugng lap ma thu duge? Anot qua trinh ma hap kim W — Co dirge sir dung nhu the nao? Cac hod chat, nuac sir dung nghien ciru thu6c loai nao? Tac gia nghien d6 day lin nhat trig vai d6 ran to vi cao nhat cua Trong bang trang 12 khong not tiled gian ram? Kh6ng co nhan xet gi ve be mat hop kim sau ram a 600oC? Bao cao trinh bay can phai khoa hoc, ra- rang han PGS.TSKH Vu Dinh Huy - Phan bin (dinh kern bai nh4n xet) Giai doan 1, tac gia da tilliv hien ddy du cac not dung de Da khao sat phan dung dich va the d6 ma ten ca sa dug dich amonnicitrate va khao sat anh huang cua che d6 gia nhiet tai phan hop kim, da ma mau hap kim W — Co de danh gia kha nang chiu nhiet, bao ve chong an mon, mai mon mot so mai tnrang xam thtrc manh nhu: dung dich muoi, acid, kiem Buck dau thiet lap dugc quy trinh ma hap kim W — Co cho 02 loai san pham xylanh kich be ty phao 37 va van xa cua birth phan ling san xuat thus/ firth long Khuyen cao: Tac gia nen ling dung phucmg‘ phap quy hoach thuc nghiem nghien de khao sat dirge anh hue:mg Tong thai cua nhieu 34u to den chat luting 16p ma va de de tim cac, dieu kien toi tru qua trinh ma hgp kim Chu trinh bay ket qua nghien ciru cho c6 tinh khoa hoc hart va het six tranh sai sot thong dang co ve loi chinh ta, cau van t6i nghia TS Nguyen Ho!ing Du - Uy vien (dinh kern bai nhan xet) -5S- Hoan ke hoach ve ca not dung va tien d6 Ket qua dat duac la ca so de trien khai cac not dung 14i De nghi nhom tac gia lap luan vi'ec chon thep CT3 lam nen cho cac mau nghien c iru Thir nghi'm mai mon can tien hanh dieu kin phii hop han vOi thuc to sir dung cac chi ti6t Xac dinh ro lOp ma hap kim c6 d6 day bao nhieu cho timg loai chi ti6t KS Nguyen Minh Quin - US, vien (dinh kem bai nh4n xet) - De tai da hoan tot nhi em vu Tat giai doan 1, da khao sat d u cc kha nang bao ve chong an man, mai mon chiu nhiet cua thep - Khdo sat anh hucmg cua phan dung dich ma KS T4 vi4 Chien - US, vier' (dinh kem bai nha'n xet) - Giai doan mot da' dp dung vac mot so cum va chi tit cUa cac Bang trang bi cho quan d6i dat ket qua tot - Cac lOp ma tang kha nang chong an mon, giam ri set mo truang - Tuy nhien de nang cao tinh thuc tien va kha nang dp dung cong ngh'e phuc hOi vu can dat cac yeu to sa: + ChiL day dat # 50p.m + D6 barn dinh de's,gia cong mai, danh bong + Su Tong deu be mat lap ma, dac bi'et ma 16 han ch6 d6 meo, gai qua trinh ma + Can nghien ciru va trinh bay quy trinh cong nghe so san pham dien hinh TS Nguyen Thanh Li - Uy vien (dinh kern bai nha'n xit) - Da thuc hien day du cac *lung giai doan - Khi trien khai can tiep tuc can chi y: + Bien phap de bac dam be day 16p ma Tong nhat, nhat la ma xylanh + De nghi quan tam ham den km krang cira dung dich IV KET LUAN TS Tr'an Tri Luan - Cher tich hOi cong ket - Nhom nghien cau da thuc hien day du cac not dung nghien ciru g/doan - Cac thi nghirn chrac 'tien hanh can than, so lieu tin cay, ket qua tot - Nen co ket qua phan tich cau trac caa 16p ma W — Co - Trong giai doan nen nghien ciru anh huOng chieu day lOp ma den d6 ben ca cua lOp ma - De nghi Soy KHCN cho thuc hien giai doan va cho de tai Ice° dai den thang 06/2006 -59- Kk qua chLn diem : - SO vien tong Fl(ii D'ang : 09/09 - Tong so vien Hoi +Jong danh gia dat: 09/09 va de nghi cho Uwe hien tiap giai down HOi nghi ket tilde bac llgiar 00 cling / LTy vien Thu• ky Chu tich 11(li dOng KS Nguyen TuAn Thanh TS TrAn Tri Luan -60- Gv Ban Nhiin Sit Khna TP lk; Chi Minh & C6ng S6 :,2/I ID-SKI ICN xA 101 ( - 110 N(;IIIA Dc.)c 1.4 - - hank phtic 1P 114 Chi Mirth ngi'ly 02 tilting 12 niim 200,? HOP F)ONG NGIllf:N CCU KI-10A IIQC VA TRIfi'iN KIRI CON; MAO' , Ching t0i g6in : Ben gian (Ben A) :SO KHOA ILOC & CON(; N(;F11;: TP.11(2111 Old Chi : 244 Dien Bien Hui ()On TI' 1I6 Chi Minh : 327 831 Fax : 325 584 I)ic'n thud) S6 lai khyan : 091.13.0004 tai Khn lite Nha Ntiac Quiin — T1).11( 11/1 : (;S.TS 1)A0 VAN 1,tkiNG 1- );ii ellen la (")ng Choc vu : Gni in 1)6c Ben nKin (Ben B) : TllVA'I' Din chi : 57A TutkIng QuCic Dung ()win Hui Nhuzin.T1'.11CIVI : X 475679 — S 4551 In Fax : S 455 14() Dien )haul Sci i khydn : 944.01.02.00005 to i Kim hoc Nhit Nti0c Qn;:in Phil Nhufin : 'PEES 'I'RAN ciii : Viun TrtiOng Dili dien la (-)ng Chac vu ciing thYd thuzin kv kCl huff) thing la huff) (1611g) WI VA BA() V1:- MOI TRtkiNG ctin khy5 inc (dthli &Iv gut lil 11110.11g di(= 111\ 110 J 11 DiC:u : BC.:n A (king y Oa() chu gui 15 : "Kel hyp kin( to phyc hill cac chi duic hicn c6ng ninh nghiC.:n can khoa hyc c(i tCn — Co Mit nett dung (lick de% iyo indy hi;n nhifq, du mOn, mYi mint - du K.S filo 'Prong T4i Ian( chti nhie in (le thco c(ic nut dung tit-in tin (Fong phy Ittc Cac Han phy tic (Ind; ki:in dung phdni cu Link phi Wong Ling ghi hurl) d6ng 15 m6I 1)6 phdn cad 11(ip Dieu : 1kn li cant kCst hicn Infp d6ng can khyd inc !hey thing vCu c50 dthfc On Wen I v'd can) ket , dyng thing mac (hell si) Iii rt chi din tl% tai NC:u tumg qua ( r ink nghiC'n ctin xu5( Inc:n nhu c5u cart ;I;Cu chinh n6i lie di) nghien can vi nine (licit ming cat) Ini:u qua ngInC:n cat' c0 quail cltti Iii vl chii nhi(ni cao chy Sit Khyd Iyc & C6ng Nghc: can hi(Th hdn dean ctia 116i I)6ng Khod I Inc sC: quy( With si; cling Dieu : ThOi thn- c hien 12/2005 Chti nhicm de ciin hay Ihu Bing gill (Icing ni‘iv lit 24 ththig : It)* th;ing 12/2003 de.:n 11liing ke't nghien cti*ti Iii;-n ihn'c hien dC N/10 -61- thang 04/2005 de ,SCi dinh) ( Cuing Nghc [6 Link nghiem tltu giai (loan I (giant Didu : 'Ting kinh phi dd tai lien A se chuye'n chu lice 13 thy': hien !tilt dentg la 180.000.000 d6ng (nit (rilm trim ntttti1 trice thing chin) • "Tung chi phi x(3t durct kiCin tra nghicnt thu ctic giai doan va nghic:in thin chink thtYc ciia tie Lai la 7.000.000 dting (lliiy 114 u thing) ctia 13i n A • Sart k9 kol lu.sp clung 13C:n A sc chuy6n cho 13i3n 13 mi kinh phi ghi is dii:u Oleo ben sae : 1)(t 51;" tics I 00.1)(10.00( cluing 62.000.000 (Ding Thiii diem 12/2003 06/2005 San hoar tat cOng tenth lighiC:n ctiu ket tai (knit: Iltii diing nghiclin thu thita nhtin va giao snip sun phifm thcu nlui guy (linh tai W6.1 (► utia hull) diing lien A se chuy6n ti6p kinh phi cern lai ctia (1(f• tai la 1S.000.000 dung (Mail tom trie.n thing) elm 13cn 13 Vi(;(., Mani] toiin ti6n Unit: Itictt thdo kink thac chuy6n klman lii tai khoan ctia 13en A vim tai khodn cda lien 13 i3 kilo bac hay ngan hang ma lien 13 cti tai Viet: cif') kinh phi lie"p thco chi dlittc lhtic hien 13C:ti 13 halo cat) k6t quii va chile halo cairnughthu nghicnt lifng giai (loan thco didu ciialiqp ding (him Om cal) giai tenth k6t qua (la lighiCit can trice khai then KC- hunch va quy:C:'t tint n tai chinh cho phalli kinh phi da nhan dtit tru'Oc) Ngoai rat thine hien htsp (Icing 136n i\ CO th6 ki6m Ira (1()i xual ti6n dui, n6u Km A thiiv can thi6t Dieu : Nghient thu tai I Thiti gian nghiclin thu moan hO d6 tai nghicn citu vim Oiling 12/2005 Ben 13 col illicit rrlricirt giao mil) day du san phain cho lien A (IC tC; cht?e hOi thing nghic:m dm Cie sae hhiim gian (11(:; trukle lighiC;111 111l1 Iii : • Hal() Call) C111 (16l (10 hall) • Halo can niin tilt (6 hu ll) 1\16u hi W.: han lien 13 phdi Iiim van hairs halo cal) cho lien A hie"( Ir hi chain trd, it nhiit la (hang trtftic tItiii 11411 (16 tai Thiti gian chain trZ: nghie thu dtrOc phep tOi da 1/ging va khai dtnic lien A chili) ihtin Neu sae (hang ma dd tai kitting the nghiem thu thl !len A se lilt Ilk cluing de" Ir d6 lai vii gidi quy6t then filth thiin ciia khoiin didu cii a hiin halt ding Fhii ding nghient thu tai Ben A (ti chide Trulk: 1101 d6iig nghiem dm holt xet Ben 13 phdi hoar lilt halo cam tai chinh cda di lai va unite Phimg KC:"Iloach — Tai Child) ctia SO Muni Hoc Cemg Nigh(' dam dinh Gilim dile SO Khoa 1.1oc & (-Ong Nghe themg qua -62- Khi hOi dOng nghiem thu danh gia ket qua nghien cau xe"p Leal DAT Ira len thl Ben B du'oc thaa nh5n da hoan cong trinh nghien cau Neu 110i (ring nghiem thu dank gia ket qua nghien cau KHONG DAT thl Ben B phai tie'p tuc nghien eau them de dtia nghiem thu ran tila hai ma Itheing thick dui hoi Ben A trd them mut khoiin kinh phi nao Phi to cluic nghiem thu kin dui Ben B chi trei cho Ben A Neu sau hai Ian to chic nghiem thu d6u KHONG DAT thl toy theo mac dg, c1anh gia cua HQi thing nghiem thu ve ti le phisin tram (%) ma ket qua nghien cau khong Qat daoc so vdi yeu cau nghien cau gu i di6u cita hcip dOng nay, Ben A se xem xet va quye't dinh mac kink phi Ben B OIL holm trii las tdong ang vdi ti le tren cho Ben A Neu Hiji thing nghiem thu kien nghl phai b6 sung mOt s6 diem de tai can hoan tat thuOc n(5i dung can lam cUa de tai thl Ben B phai b6 sung trade ket thac (16 Lai l0 Phan kinh phi (16 tai thtu tu' cho mua sdm thie't bi da du'Oc duyet theo de cdOng nghien cau (ne'u co) phai du'Oc ghi tang tai san cho thin vi nghien cau theo quy dinh hien hank dui Be Tai Chink Dieu : San Odin giao nep De tai dude coi la hoan ket qua nghien cau duck nghiem thu theo (lieu kien quy dinh is (lieu ctia ban hop thing Trong thifi lean 15 ke tit de Lai nghien cau du'Oc nghiem thu, Ben 13 c5 nghia vu phai giao nop cho Ben A cac san philm dpi ghi phu luc 2, bao gum : • Bcio cc o ket qua clii tiet am de tai (3 b()) • 13do cho tont kit va kien nghi • Diu CD-ROM Ituz wan b() ket qua' nghien caw ctia de tai (03 be) • Plcieic doing ky ket qud nghien cliu (3 bcin) • Bang quyet loan kinh phi de tai (3 biln) Dieu : Quyem sit lieu tri tut) DC tai nhan 100 % kink phi tct SO Khoa hoc, Cong nghe chi quyen sO hat d6i vdi ket quzi nghien cau thuijc ve ben A Ben B hoac Chu nhiem (.16.tai du'Ve !Wang quy6n ttic gia khOng ang chili la cho sof liCtu cac pham theo dit.'‘ 752 bOluiitthin sy Chia niliOrn de tai main ph6 bie-n, sit dung ket qua nghien cau phai có sy thoa thu5n bhg van ban gida SO Khoa Hoc & Cong Nghe va cac cho sii htIu ket qua nghien Diem : Diem khoan thi hauls Hai ben cam ket thyc hien thing cac di6u khoan ghi hOp dOng Trong qua tenth tilde hien ne'u ben nao gap kho khan trO ngai chic nghia vu thong ban bac giai quye-t bao vdi ben (Wing, van ban) de -63- N1Qi ski vi pham lusp thing d u dtAtc xir I c the° phap knit va URI lye hien hanh Lai Oa an cc') sham quyen Didu : Hieu hie Nip d(ng vu ly h(jp thing 1-1Op thing có hien life tit ky ke't va chnu dat quydn lOi va nghia vu ciia nu3i hCm da &kit: thtle hien xong Khi ke't thus hqp thing hai ben sC.' lam hien ban 19 hop thing 1-1qp thing dtkie lap lhanh 08 han cci gia nhau, mill ben gig 04 han DA! 1)IEN BEN B CO QUAN CHU "rid ,,70.14 11 1.;, c 1.R LAING ;, , , \ \ DAIL DIEN BEN A • , A NI DOC KI-10A HOC ( CON MGH1.; Vo\ / , \-f f?Thrcr " 1-)AO VAN LLI(,JNG 'I H.S 'I'RAN MINH CHI CHU NHIEM TA I KS BOI 'FR(,) N(; TA I -64- PHU LUC TILN L THU'C HIEN Giai doan I : Tir [hang 12/2003 d6n thzing 04/2005 - Kinh phi : 100.000.000 thing Ti' r Tom tat nQi dung - Tham khdo tai lieu ve vat lieu kim loai he kim dung ch6 Lao thin hi chit' nhiet dti cao hen mai mOn va all mOn - Tham khao tai lieu ma hop kim hop kim Vonfram, hOp kim W — Co - Thi nghie m sO he? )(tic dinh dung dich va htrang nghien cdu - Nghien plitrOng phap xii' 1st nem kim loai, litsp kim de ma - Khao sat thank phlin dung divii i ch6dO ma anh Wang tt3i phan hqp kim va cac (hill Ming ca 19 cda lap ma - Phnom!, pilaf) xi? 19 nhi0 de tang (.10 cang lap ma - Khao sat d0 hdn dm lap ma hOp kim dung dich axit H2SO4 HNO3 - Nghien ctYu phtrong phap ma hOp kim Ion mat' they CT3, 30XH3A dam bao dO On ham dO cang 1116 xn-p the° tieu churin ciia lap ma phut: 1116i Ma hop kim len phiii Lao san pham: Van nap lieu hinh 'lan dug san xudt thdy tinh !Ong.' Xv Ianh kich t ■,, phzio cao xa37 San phfi'm can tat - Tim dtrOc dung dich vai phan cha ye-u cac him chili co tren thi IrtOng - )(Lk dinh dtrOc cac phtfOng phap phan (10 danh gill se ti6n hanh - Ldp ma hqp kim co (Allem day < 200i_tk - HiOu sudt dung 40-80q - DO cang lap ma 700K(i/mm - DO hen gdp tit — 10 Ian so vai Ni va Co nguyen chdt - Bat ham dinh the() 1)1111'011g phap that ming lanh, mai va khzic each + Nen C45 ea kich thtfac 050 L=400 hinh ma hinh chop non L1 =30 chidu day lap ma hop kim 200pk, d( cang: 900-1000 KG/m m2 + Ndn la thep hOp kim (Cr Mn, Ti, Mo) kich thtrac (1)60 L=400, lap ma can do: - Chi6u day 2001,1k cting : 900-10(10KG/mm2 liao cao nghiym thu giai doirn -65- Giai loan II : Tit thing 05/2005 den (hang 12/2005- : 80.00(1.000d6k, San pharn can dat TT Tom tat ni)i dung 01 Tha nghiem dank gia van nap liOu cho hinh khan Thai gian lam vice thyc 100gia (So vdi ring san xufit thdy tinh long chtra ma 24 gin) tinh ming c(1 1Y/ thii' di) ham clink dice ThY khii nang chiu 11(ia chfit NaOH 151,; kiOn P = 13 KG t = 200"C 02 This nghiem danh gia ma phut: h6i xy Ianh kich - DO cang Idp ma phyc — hill 900 — 1000KG/mm2 he ty pilau cao xa 37 Wing ldp ma hqp kim - Chi6u day 200p.k Co Khii flung chic mai mon, an mem mcii trtrang - Ficn 'song dung dich NaCI, dem xanh ng9t, phan tie-p giap giiTa khong NaCI - Hon trent dau xanh va piston ng9t (Hat 1'C thir nghit";m chuyon nganh) - Dam hao the° tieul chuS11 thii c111.1)/en nganh - Tang thai gian hOn moi truang tha nghiOni 10n lin Xay dyng hoan chink va 6n dinh guy truth de ma hqp kim W — Co nham phyc hOi va che- Lao cac chi tin nhiet de? cao, tic nhan an cda thin hi lam vice 111611 mai man Ian - Xay dyng du'qc guy truth chung - Xay dyng quy trinh cu th6 cho hai the; loai san phfim -king 1-1(5p so lieu Viet hao cao Wing 11(.1p Floa n chin k NgliiOn1 Ulu tai Giao nOp san phfim thco hqp (Icing -66- ,i d.r m• e ,,,,t.: i:4'6/ :V.• NI, , , 4., d• S1 , It • i, "'I , , _ ) ' ko*" N — t r , rbf " ' C,"' : e.— • A ' • v ' , ei, , al' k:11- 101,11 P.‘ • L • *•I'ir,e.g st t:icc "1 xe - lo ‘ , " , 'or, lilt • - rir' ` ' ••• l'`i.".01$ •., -1 kt- ; ,, (' 14 -i ts i.1 A ki qt -co,V Spot Hagn Vet WD • kV ID 853014 SE 24.0 OrOi.E1111V WO • we **!rt.:54r1??;tnil ,, i• zt+! / ;41 T ,nt kr r • ) ',at) rb :t 4111 Aft ••• talM • ■ •••••••• ;'• •4 2e0 • „It',0•••• •S• ••••1 Y,t I f) ta pm Acct/ _ Spot Hagn Del; WD $0.0 kV e.d SOON *SE " 231 GEOL SURV X130 :P) 4.• • Anh chup SEM lop ma top kim W — Co (23% Co): a- chu'a gia nh*; b- gia nh* d 400°C gid, [22]