NGHIEN CUfU-TRAO D O I NGHIEN Cl>U MON VAT LIEU LOT P H O PLASMA Hap KIM Ni67Cr18Si54B TRONG QUY MO PHONG THI NGHIEM RESEARCHING WEAR OF 67NI18CR5SI4B ALLOY MATERIAL LAYER COATED BY PLASMA SPRAYING IN THE LABORATORY SCALE NCS Tran Van Dung, PGS.TS Ha Minh Hiing TS Phan Thach Ho Vien Nghiin edu Co - Bo Cong ThUPng Bdi bdo gidi thiiu veket qud nghiin cdu thUc nghiem xdc dinh mon cua ldp hdp kim Ni67Crl8Si5B4, nhdn dUdc bangphUdngphdp phun plasma tren mdu hinh tru vd cap doi vdi hdp kim dong ldm bac trUdt tren thiet bi thd mon nhanh quy mo phong thi nghiim CUdng mon cua vdt lieu ldp phu nhgn dUdc d hai chi phun bgt hdp kim trUc tiip vdo chi tiet true vd thong qua mgt ldp lot cong nghe trung gian NiSAl Id mgt cac tieu chi quan trgng dedU bdo tuoi ben cua chi tiet mdy dieu kien sd dung trin thUc ti Kit qud thi nghiem dUdc xd ly bang phan mem tin hgc chuyen dung, dUa cdc thi trUc quan ve lUdng mon d dHu kiin thd nghiim nhanh d cdc che dg tdi trgng khac Ddy cung Id mgt phdn kit qud nghien cdu thUc nghiim cua nhom nghien cdu tgi Trung tdm CTA-NARIME, Vien Nghien cdu Cd vd co sU trUc tii'p tham gia cua nghiin cdu sinh This article introduce on experimental research Results for determining abrasive wear of the 67Nil8Cr5Si4B alloy layer, received by plasma spraying method, on cylindrical samples working with copper alloy-bush bearing, working on wear-testing machine in the laboratory scale Frictional properties of the coating material layer, received from two types of alloy powder spaying: directly on journal and on advance spayed lining layer, is one of the important criteria to predict the durability ofparts in the specific conditions Test results processed by specialized computer software show visual graph of the wear in the test conditions with different loads This is a part of experiment research result of research team of CTANARIME Center of National Research Institute of Mechanical Engineering, in which Ph.D students is a key member DAT VAN DE: Doi vdi cie cbi tiet dang true dang hong thudng eac vi tri lip vong bi hoae bac Dp ben mon d cac vi tri cung la mpt yeu to i n h hUdng den tuoi thp cua ehi tie't may Trong ehe tao mdi vi phue hoi eic chi TAP CHf CO KHf VI$T NAM • tiet may dang true ndi trin, viec dng dung eong nghe phun phu de tao mpt ldp phu be mat co chiiu day khoing 1-^3 mm ed eo tinh eao va chiu mai mon tdt hon loi thep b i n true li mpt hUdng nghien edu tiin tien dang dUpe cae nU6c eong nghiip phit trien i p dung L/u diem chinh cua eong nghe phun phu, dac biit li phUPng phip p h u n plasma, l i dam b i o dp ben b i m dinh 16p S6 1+2 (Thing 1+2 nam 2013) NGHIEN CUU-TRAO Dpi phli vdi kim Ioai nen du ben viJng diiu kiin ngoai khoang 1,0 nun, miu dong ban dau lam viee ciia true trUdng hpp dd la bac cap doi vdi mau phun phia trUde thd - 14 x trUpt hoae dd la vong bi Dong thdi, no khong 12 X 20 mm Van toe trUcrt diiu chinh d mde: gay dng sua nhiet Idn nhU h i n dap Vdi yeu V, = 235,6 m/ph; V^ = 157,0 m/ph, V3 = 117,8 m/ eau xie dinh k h i nang dng dung v i xic lap mot so ph Tii trpng dieu ehinh d mde: P, = IkG, P^ = ehe dp cong nghi phun thich hpp, nhom nghien 3kG, P^ = 5kG Trong cdng trinh niy, thdi gian cdu tai Viin Nghiin cdu Co da chpn phUPng thd nghiem chpn d mde 10 h, vdi sd lUpng mau phip phun plasma de phue hoi mpt so chi tiet khao sit mon nhanh la 06 cap dang true thiet bi cong nghiip dupe trieh dan eong trinh luin i n eua nghiin edu sinh PHl/ONG PHAP N G H I £ N CtJtJ Nguyin Iy thd mdn nhanh v i tU dpng lupng mon ddi vdi m i u vit lieu ehuyen dung cd the sd dung so nguyen ly cho eac cong trinh [1] Tren hinh la anh chup thiet bi thi nghiim thd mdn nhanh chi tiet miy dang hinh tru Cap ma sit gdm hai ehi tiet Ii mau thd mon ST^ '^_.'rL-i Htnh Thiet bi thi nghiem thd mon nhanh ldp phu hdp kim 67Nil8Cr5Si4B bdng phUdng phdp phun plasma nhanh Idp kim Ioai be mat trin mau hinh tru bang thep C.45 ed ldp phu hpp kim 67Nil8Cr5Si4B) v i chi tiet doi dng (hpp kim dong LCu80) dupe eho trin binh a So dd dat tii cho tren hinh b C h i dp thd nghiem mon nhanh quy mo phong thi nghiem dupe thUc hiin trin thiit hi ma sat hpe ehuyen dung tai bp mon Ma sat hpe TrUdng Dai hpe Bach khoa Ha Noi vdi dii'u kien Htnh Cap doi ma sdt hdp kim LCu80 - 67Nil8Cr5Si4B de thd mon nhanh idpphu (a) vd sd ddt tdi (b) ma sit khd hoac cd diu boi trPn Be mat ngoai eua mau phun phu dUpc lam KET QUA THf NGHI$M VA B A N LUAN s^ch khdi ldp mang oxit v i tao dp dong diu theo mat try trUdc dUa vio thi nghiem bang eieh Kit qua ehay thd Idem tra dp bin mon lay mii den het vet Kich thUdc mau thep C.45 sau vi du doi vdi mot so mau phun phu trUe tiep lin phun phu ldp hop kim 67Nil8Cr5Si4B (cd nen thep C.45 khong cd ldp lot trung gian NiSAl ldp lot vi phun true tiep) [2] li: x x 12 dupc eho bing -^ 3, eon doi vdi mau phun mm, dd chieu day Idp phu sau mii trdn cd ldp lot - cho bang 4-^6 TAP CHf CO KHf VI£T NAM S6 1+2 (Thing 1+2 nam 2013) | "^ NGHIEN C U U - T R A O D O I Bdng Ke't qud khdo sdt ben mon doi vdi mdu so KL (khong co ldp lot) CU6ng d6 mon, I, |im/10h K^t qua S6TN Van toe trdot, V, cm/s Tal trgng thil, P, kG Lan Lan Lan 235.6 0,12 0,13 0,14 0,12 0,13 235.6 0,25 0,26 0,24 0,25 0,25 0,48 Lan 235.6 0,47 0,48 0,5 0,46 157 0,08 0,09 0,1 0,08 0,09 157 0,17 0,19 0,18 0,19 0,18 157 0,37 0,39 0,4 0,42 0,40 117.8 0,05 0,03 0,04 0,03 0,04 117.8 0,13 0,13 0,16 0,17 0,15 117.8 0,21 0,2 0,24 0,26 0,23 SoTN Van toe truot, V, cm/s Tai tha, P,kG Lan Lan Lan Lan 235.6 0,17 0,16 0,16 0,17 235.6 0,29 0,29 0,28 0,28 0,29 235.6 0,48 0,49 0,48 0,49 0,49 157 0,09 0,07 0,08 0,08 0,08 157 0,19 0,17 0,16 0,18 0,18 157 0,41 0,42 0,44 0,42 0,42 117.8 0,05 0,06 0,05 0,04 0,05 117.8 0,10 0.12 0,11 0,11 0,11 117.8 0,22 0,21 0,2 0,21 0,21 SiiTN Van toe trilot, V, cm/s Tai thil, P, kG Lan Lan Lan Lan 235.6 0,23 0,22 0,23 0,24 0,23 235.6 0,36 0,35 0,36 0,37 0,36 235.6 0,59 0,58 0,59 0,6 0,59 157 0,15 0,14 0,13 0.17 0,15 157 0,21 0,22 0,23 0,24 0,23 157 0,44 0,43 0,45 0,46 0,45 117.8 I 010 0,13 0,12 0,11 0,12 117,8 0,18 0.20 0,21 0,22 0,20 117.8 0,31 0,3 0.29 0,33 0,31 Bdng Ket qud khdo sdt bin mon ddi vdi mdu sd KL (khong co ldp lot) Ket qua Clldng mon, 1, [im/lOh 0,17 Bang Kit qud khdo sdt ben mon dd'i vdi mdu so KL (khong co ldp lot) TAP C H i C O K H i VlfiT NAM Kit qua • Cucjng dp mon, I, gm/10 h S6 1+2 (Thang 1+2 nam 2013) NGHIEN ClJfU - TRAO OOl Phan tich so lieu bang cho thay: Doi vdi cac m i u nhan dupc sau phun phu ctldng dp mon (I) cua vat lieu 16p p h i hop kim hpp kim 67Nil8Cr5Si4B bang plasma co phun 67Ni 18Cr5Si4B tren mau so KL tang ty le thuan ldp lot trung gian NiSAl len nen thep C.45 ket v6i tai (P) va giam ty le thuan theo toe qua nhan dupc tUOng tu nhu ba m i u da xet tren trilflt (V), dat gia tri trung binh qua cac lan day So lieu thi nghiem nhan dupc trudng khoang I = 0,04 H- 0,48 nm/10 h, theo hpp dupc cho bang 4, bang va bang che dp thfl a cac tai (P va V) khac So lieu d bang cho thay: cUdng mdn Ctldng dp mdn cfla vat lieu ldp phfl hpp (I) cua vat lieu ldp phu hop kim 67Nil8Cr5Si4B kim cung cd xu hfldng tang ty le thuan vdi tai tren mau so KL tang ty le thuan vdi tai trpng trpng (P) va giam ty le thuan vdi toe dp trUpt (P) va giam ty 16 thuan theo tdc dp trUflt (V), dat (V) Gia tri trung binh cfla cfldng dp mdn khao gia tri trung binh qua cac lan khoang I sat thdi gian 10 h dat khoang: I = 0,04 = 0,05 + 0,49 |jm/10 h, tiiy theo che dp thfl d cac + 0,47 pm/lOh (bang 4); = 0,05 + 0,40 ^m/10h tai trpng (P va V) khac (bang 5) va I = 0,06 + 0,48 nm/lOh (bang 6) Sd lieu d bang chp thay: cUdng mdn (I) cua vat lieu ldp phu hop kim 67Nil8Cr5Si4B Tfl sd lieu nhan dUOc cac bang + tren day va sfl dung phan mem tinh loan xfl ly tren miu sd KL tang ty le thuan vdi tai trpng sd Ueu thdng ke toan hpe thuc nghiem chuyen (P) va giam ty le thuan theo toe dp trflpt (V), dat dung da xay dung dupc dd thi dang 3D bieu dien gia tri trung binh qua cac lan khoang cUdng dp mdn phu thupc vao bd ddi thdng sd = 0,12 4- 0,59 nm/10 h tfly theo che dp thfl d cac dau vao P va V pham vi khao sat nhfl hinh tai trpng (P va V) khac -:- dudi day: Bdng Ket qud Ichdo sdt ben mdn doi vdi mdu so CL (co Idp lot) SdTN Van tdc trUot, V, cm/s Tai trpng thfl, P, kG Lan 235.6 0,16 Lan 0,14 Lan 0,13 0,15 235.6 0,29 0,29 0,3 0,30 235.6 0,48 0,47 0,31 0,46 0,45 0,47 157 0,10 0,09 0,11 0.09 0,10 157 0,19 0,21 0,22 0,18 0,20 157 0,37 0,38 0,38 0,37 0,38 117.8 0,05 0,03 0,04 0,03 0,04 117.8 0,09 0,11 0,1 0,12 0,11 117.8 0,19 0,18 0,2 0,19 0,19 Ket qua Lan TAP C H i CO KHi VIET NAM V Cudng dp mdn, 1, Uni/lOh 0,15 Sd 1+2 (Thang 1^2 nam 2013) NGHIEN CUfU - TRAO Qpl Bdng Kit qud khdo sdt ben mon ddi vdi mdu so CL (co ldp lot) S6TN Van toe trUOt, V, cm/s Tai thfl.P.'kG 235.6 235.6 235.6 157 157 157 117.8 117.8 117.8 I 5 Ket qua Lan 0,15 0,22 0,40 0,09 0,17 0,28 0,04 0,09 0,20 Lan 0,14 0,23 0,39 0,09 0,15 0,27 0,06 0,08 0,21 Lan 0,16 0,2 0,39 Cudng mdn, I, irm/lO h Lan 0,1 0,16 0,29 0,05 0,17 0,24 0,41 0,11 0,18 0,27 0,03 0,1 0,2 0,1 0,18 0,16 0,22 0,40 0,10 0,17 0,28 0,05 0,09 0,20 Bang Kit qud khdo sdt bin mon doi vdi mdu so CL (co ldp lot) S6TN Van toe trUOt, V cm/s Tai thfl, P,kS 235.6 235,6 235.6 157 157 157 117.8 117.8 117.8 5 Ket qua Lan 0,17 0,26 0,47 0,13 0,21 0,32 0,05 0,16 0,22 Lan 0,18 0,27 0,49 0,13 0,22 0,33 0,06 0,13 0,21 Lan 0,17 0,27 0,48 0,12 0,21 0,31 0,07 0,15 0,21 Cudng dp mdn, 1, ^im/lOh Lan 0,18 0,28 0,48 0,11 0,21 0,29 0,07 0,13 0,23 j* Hinh Dd thi cUdng mon hdp kim 67Nil8Cr5Si4B phun phu khong co ldp lot NiSAl: a) mdu so 01 KL; b) mdu so 04 KL; c) mdu so 09 KL TAP CHf CO KHf VIET NAM • Sd 1+2 (Thing 1+2 nam 2013) 0,18 0,27 0,48 0,12 0,21 0,31 0,06 0,14 0,22 NGHIEN CljfU - TRAO D I a) b) c) Htnh D6 thi cUdngdg mon hdp kim 67Nil8CrSSi4B phun phit co ldp lot NiSAl: a) mdu so 02 CL; b) mdu so 04 CL; c) mdu so 08 CL Nhan xet: - Cie dd thi 3D cho tren cie hinh 3-5-4 cang eho thay mpt eieh trUe quan hPn ve quy luat thay ddi cUdng dp mdn cua ldp phu hpp kim 67Nil8Cr5Si4B trin cie mau nhan dUpc sau phun phu plasma (cd va khong co ldp lot trung gian NiSAl) tUPng dng vdi mpt so c h i dp thd vdi bp doi tai trpng (P) va tdc dp trUpt (V) khie Xu hudng ehung la: eUdng dp mon (I) tang ty li thu$n vdi chieu tang cua tai trpng thd (P) va giam ty 1? thuan vdi chieu ting cua toe dp trUpt (V) - Su khie biit gida hai trUdng hpp thi nghi&m thd mdn nhanh cac mau phun phu hpp kim 67Nil8Cr5Si4B khong ed va ed ldp Idt trung gian NiSAI li khong ding ke, vi b i n chit van di la cac mau dUfle khio sit mon doi vdi ldp phu hpp kim Vai tro cua Idp phu lot trung gian NiSAl d day chi li lim ting b i n b i m dinh eua ldp phii hpp kim 67Nil8Cr5Si4B vdi Idp nen thep C.45 Tuy nhien, neu tang tii trpng thd d i n mpt mde nao do, ed the xi'y hien tUpng bong tr6c ldp phu hpp kim 67Nil8Cr5Si4B khoi Idp nen thep C.45 dinh ldp eao, to ehdc t i vi ldp phu, ldp lot trung gian trin bien gidi liin kit vdi ldp nen thep C.45 rat tot (sach tap ehat ban hoac it lien kim loai cue bp); 2) Viee nghiin edu khao sat mdn nhanh ldp phu hpp kim 67Nil8CrSSi4B, quy mo phong thi nghiim va mo phong cUdng dp mdn phu thupe vao hai thong so ehinh la tii trpng thd (?) va toe dp trUOt (V), ed y nghia khoa bpc dng dung de thiit k i vi ehi dinh di dp lim viic eua ehi tiet miy dang true bp doi ma sit vdi bac trUpt cie Ioai Vdi quan dii'm do, chuong ap dung kit qua nghiin edu cua luan an ddi vdi viee phue hdi eae ehi tiet true eua mpt so may moc, thiit bj cdng nghiip Viet Nam, da ehpn dupc che dp phun phu hpp ly, dim bio chat lupng san pham sau phue hoi tdt *** Ngiy nhin bai: 18/01/2013 Ngiy phan bien: 20/02/2013 NgUdi phan Men: GS, TS Tran \ ^ n Dich, TrUdng Dai hpe Bich khoa Ha Npi Tai lieu tham khao: [1] Le Ba Khang, Nguyen Quang Luat (2004): "TU dong hoa lUdng hi so ma sdt trin thiet bi ma sdt MS-TSl", Tap chl Co Viet Nam, so 87/T7-2004, 1) Qua cie thi nghiim d i thUc hiin, trang 37-38 cho thay vi?e nang cao ehat lUpng ldp phia [2] Ha Minh Hung, Tran Van Dung Phan Thach Ho 67Nil8Cr5Si4B, dac biit la dp ben b i m dinh cua (2012): "Nghien cdu dde tinh chdt cua vdt lieu bimetal nd vdi ldp ni'n thep C.45 cd the thUc hiin bang thep cdc bon - hdp kim 67Nil 8Cr4B sau phun phit bdng cich sd dung Idp phii lot trung gian NiSAl, phun phUdng phdp plasma" Tap chi Co Viet Nam, so len nen thep C.45 trUde phun ldp phu hpp T12/2012 kim Bing eieh niy co the d?t dupc dp ben bam 3.KITLUAN TAP CHf CO KHf VI$T NAM • S6 1+2 (Thing 1+2 nim 2013) ... ldp phu hdp kim 67Nil8Cr5Si4B bdng phUdng phdp phun plasma nhanh Idp kim Ioai be mat trin mau hinh tru bang thep C.45 ed ldp phu hpp kim 67Nil8Cr5Si4B) v i chi tiet doi dng (hpp kim dong LCu80)... vdi cac m i u nhan dupc sau phun phu ctldng dp mon (I) cua vat lieu 16p p h i hop kim hpp kim 67Nil8Cr5Si4B bang plasma co phun 67Ni 18Cr5Si4B tren mau so KL tang ty le thuan ldp lot trung gian... nen thep C.45 rat tot (sach tap ehat ban hoac it lien kim loai cue bp); 2) Viee nghiin edu khao sat mdn nhanh ldp phu hpp kim 67Nil8CrSSi4B, quy mo phong thi nghiim va mo phong cUdng dp mdn phu