Nghiên cứu công nghệ làm khuôn đúc mẫu chảy để nâng cao hiệu quả kinh tế

- M U CH U QU KINH T 8520103 TP H 08 : HCM ng d n khoa h c :TS ch m nh i ch m nh Lu n Vinh D cb ov t 08 ih 2021 (Tr c n) nH m: TS Nguy n Thanh H i - Ch t ch TS Ph m Quang Trung - PGS.TS Tr - Ph n bi n i TS Nguy n Vinh D PGS.TS - Ph n bi n n - n c a Ch t ch H ng Khoa qu c s a ch a (n CH T CH H NG KHOA I H C QU C GIA TP.HCM C IH I CH T NAM c l p - T - H NHI M V LU H nh Th y B MSHV: 1970232 -03-1984 n Giang : 8520103 m u ch u qu kinh t Research on the lost wax process to enhance economic efficiency II NHI M V I DUNG: u ng c u dung d ch huy iv im n th M V : 22/02/2021 M V : 13/06/2021 NG D N : TS NG MINH 21 NG D N CH NHI M B (H (H NG KHOA (H O L IC ct pt ih d r t nhi cs nh t ng a khoa k thu t ki n th c, kinh nghi m, n t t c nh ng s c bi n ng d ct Th ng l M c nhi u s nhi vi t s th c hi n lu t g ng r t hi u bi u ch thi c ch cs n lu nc T LU Lu ut v im n u ch y n th n xu t hi n t i c a Ti gi qu gi i,t l S d ng dung d ch huy mb c ch , gi m c th i gian t o v c 24 h l a gi m 17 % so v t l ph ph m n xu t hi n t i gi m l m 20 ov n 26 % th i gian n xu t hi n t i n v ABSTRACT This thesis aimed to investigate the effect of factors in the lost wax casting process in order to enhance economic efficiency The drying process could reduce 24 hours in the lost wax casting The new slurry could reduce layers of mold The analysis results show that it is possible to reduce 20 % to 26 % time in mold process L u khoa h c c li u khoa h c, k t qu u c a lu n g N hi m v n i dung lu Tp H th H Hu nh Th y B M CL C 1.1 1.2 M 1.3 u ng u 1.4 c ti n c 2.T 2.1 T 2.1.1 2.1.2 2.1.2.1 2.1.2.2 2.1.2.3 2.1.3 2.2 u U u : c c : td ng td c nghi m u th c nghi m: : K t lu n THUY T KHOA H C 10 3.1 tq u ch y 10 3.1.1 u ch y: 10 3.1.2 c mc u ch y 11 3.1.3 V t li u 12 3.1.3.1 t 12 3.1.3.2 V t li ch y th p 12 3.1.3.3 V t li 12 3.1.3.4 V t li ch y 13 3.1.4 Ch t 13 3.1.4.1 V t li u ch u l a : 13 3.1.4.2 Ch t k 13 3.1.4.3 Ch t o dung d ch huy 15 3.1.4.4 Ch t o v m ng: 15 3.1.4.5 N u ch y m 16 3.1.4.6 16 3.1.4.7 ch v 17 3.2 3.2.1 M 3.2.2 3.2.2.1 3.2.2.2 3.2.3 3.2.3.1 3.2.3.2 3.2.3.3 tq y 17 y 17 i 18 S yt 18 S o : 18 i v t li u m 18 V t li u keo: 19 V t li u x p mao d n: 19 V t li u keo x p mao d n: 19 3.2.4 3.2.4.1 3.2.4.2 3.2.4.3 3.2.5 3.2.5.1 3.2.5.2 3.2.6 3.2.7 3.2.8 3.2.9 3.3 t v t li u m: 19 c 20 20 21 i m v t li u s y 21 m t 21 t 21 m: 22 y 23 27 y 27 T ng quan v U 33 4.1 4.1.1 4.1.2 4.1.2.1 4.1.2.2 4.2 Ch 4.2.1 4.2.1.1 4.2.1.2 4.2.2 4.2.2.1 4.2.2.2 4.2.2.3 4.3 Nh c b nc u 33 uc 33 th c t m: 34 34 35 m: 36 m : 36 n th 36 Quy ho c nghi m 37 m : 38 B t PC-II : 38 a dung d ch huy a b t PC-II : 39 m 39 42 5.1 5.1.1 5.1.2 5.1.3 5.1.4 y v g m: 29 H C NGHI M 43 n th t 43 24 h 43 Ti ms yk u ki m 44 K t qu qui ho ch th c nghi m d ng B theo minitab 45 K t lu n 47 5.2 u dung d ch huy n th 47 5.2.1 K t qu m 2.1 49 5.2.2 Nh m 2.1 55 5.2.2.1 Arm lock center 55 5.2.2.2 55 5.2.2.3 Qu t v t 688-17 56 5.2.3 K t qu m 2.2 56 5.2.4 Nh m 2.2 63 5.2.4.1 Arm lock center c 63 5.2.4.2 63 5.2.4.3 Qu t v t 688-17 64 5.2.5 K t qu m 2.3 64 5.2.5.1 m 2.3 c a Arm Rock Center 65 5.2.5.2 m 2.3 c 70 5.2.5.3 m 2.3 c a Qu t v t 688-17 75 5.2.6 m 2.3 80 5.2.6.1 Arm lock center c 80 5.2.6.2 80 5.2.6.3 Qu t v t 688-17 th nghi m b m g n gi n t i 80 5.3 K t lu n 80 5.3.1 m 80 5.3.2 m 80 5.3.2.1 m 2.1 80 5.3.2.2 m 2.2 81 5.3.2.3 m 2.3 81 5.3.2.4 K t lu m 81 TH O LU N K T QU TH C NGHI M 83 6.1 6.1.1 6.1.2 ms 83 K t qu m 83 84 6.2 m2:n t c a v t li i PC- n th 85 6.2.1 6.2.2 6.2.3 6.2.4 86 87 m Qu t V t 688-17 88 K t lu n 89 89 U THAM KH O 90 DAN B B B B B B B B B B n c a Antuka .7 uc .7 m 36 4.2 B ng quy ho ch h n h i x ng b c hai d m 38 c PC II 39 4.4 Dung d ch huy 39 m 40 4.6 40 4.7 41 u ki n t m 42 ng 2.2 K t qu ng ng ng ng ng ng NG BI U 77 B ng 5.29 Chi ti u s d ng 78 B ng 5.30 K t qu ngo i quan Hi n t m 5.30 Hi n t m 5.31 nn 79 Hi n t i m Hi n t m 5.32 Chi ti m 80 5.2.6 m 2.3 5.2.6.1Arm lock center c T l i hi n t i T l a gi m 11.9% so v i v i hi n t i T l ph ph m ngo i quan gi m 3.74% so v i v i hi n t i 5.2.6.2 T l i hi n t i T l a gi m 3.1% so v i v i hi n t i T l ph ph m ngo % so v i v i hi n t i 5.2.6.3Qu t v t 688-17 th nghi m b m g n gi n t i 5.3 K t lu n 5.3.1 m1 K t qu ms ng n 24h ( cho th ,t l 5.3.2 m2 5.3.2.1 m 2.1 a gi m 17% so v nt i Arm lock center V al V m hai l ng - l ph ph m gi m 2.1% so v i 1-5 - l ph ph m th i hi n t i V al - V mm tl l ph ph m gi m 2.7% so v i 3-3 - l ph ph m th i hi n t i Qu t v t 688cl nghi m b m u ki nhi nt p iv 81 5.3.2.2 m 2.2 Arm lock center V al V m hai l ng - l ph ph m gi m 0.3% so v i 1-5 - l ph ph m th i hi n t i V al - V mm tl l ph ph m th p nh t - l ph ph m th i hi n t i Qu t v t 688-17 nghi m b m nhi nt l ph ph m 5.3.2.3 m 2.3 Arm lock center c T l T l i hi n t i a gi m 11.9% so v i v i hi n t i T l ph ph m ngo i quan gi m 3.74% so v i v i hi n t i T l T l i hi n t i a gi m 3.1% so v i v i hi n t i T l ph ph m ngo i v i hi n t i Qu t v t 688-17 th nghi m b m 5.3.2.4K t lu i v i chi ti V Th g n gi n t i m2 cnh m gi m hai l p back so v i hi n t i m 22h so v i hi n t i m 2.5kg so v i hi n t i Ch mt i hi n t i a gi m 11.9%,ph ph m gi m 3.74% so v i hi n t i) 82 i v i chi ti V ct m gi m m t l Th t l p back so v i hi n t i m 20h so v i hi n t i m so v i hi n t i Ch mt (ph ph m c m 0%) iv V Th Ch i hi n t i ng ph c t m gi m m t l t v t 688-17 t l p back so v i hi n t i m 25h so v i hi n t i i hi n t i 83 6.1 6.1.1 K t qu TH O LU N K T QU TH C NGHI M ms B ng 6.1 m B ng 6.2 K t qu m1 m1 84 B ng 6.3 K t qu ch h n h i s n xu t hi n t i i x ng b c hai d ng B theo minitab: T + 0,0922 = 0,227 + 0,1095 Gian + 0,279 - 0,053 - 0,1093 Gian Gian 6.1.2 Ti i hi n t i T l nh s a gi m 17% so v i hi n t i ch th c nghi m b c hai d y y u t nhi t ng nhi D a theo k t qu n th il s y.Nhi s nd l ph ph cc l nh s a c mv is 85 6.2 m2:n t c a v t li i PC- th B ng 6.4 u ki m2 n 86 6.2.1 Lock Center B ng 6.5 u ki m c a Arm Lock Center Nh iv Arm Lock Center u ki m 2.2 cho t l ph ph m th p nh t iv t nh ph c t p th nghi B ng 6.6 K t qu m Arm Lock Center t h ng u ki n t nh t 87 6.2.2 mh B ng 6.7 u ki Nh iv u ki m 2.2 cho t l ph ph m th p nh t iv t h ng t ph c t p cao u ki n t nh t B ng 6.8 K t qu 88 6.2.3 m Qu t V t 688-17 B ng 6.9 u ki m Qu t V t 688-17 Nh iv u ki th y m nghi hi n t i Qu t V t 688-17 m 2.3 cho iv c n th nghi m v i s l B ng 6.10 K t qu m Qu t V t 688-17 tl n ng 89 6.2.4 K t lu n Oxide Al2O3 SiO2 TiO2 Fe2O3 CaO MgO Na2O K2 O % 35.43 63.23 0.65 0.90 0.22 0.03 0.07 0.08 B ng 6.1 c PC II Dung d ch huy t kim lo u ki n b c m i ( PC II ) g n i hi n t u ch y c, ng, v ms l pt cnh n: m b o ch i v i chi ti t V ng chi ti t ti i gi m hai l p back so v i hi n t i i v i chi ti V c t p: i gi m m t l t l p back (L5) so v i hi n t i iv V c to ng ph c t p i gi m m t l t l p back (L4) so v i hi n t i Th Ch n 26% so v i hi n t i av it i hi n t i 90 U THAM KH O [1] Rupinder Singh and Jagdeep Singh, Investigating the effect of shape factor, slurry layers and pouring temperature in precision investment casting, Materials Science Forum, vol 751, pp 35-44, Mar 2013 [2] M Matsuura et al., Utilization of plaster mold for lost wax casting process, 53 , , vol 53, UDC 621.744.3.045 666-81 [3] A Chennakesava Reddy and V S R Murti Studies On Lost-Wax Process Using Silox Binder, Proceedings of 10th ASME Conference on Mechanical Engineering,Production and Industrial Engineering Department, Delhi College of Engineering K Gate, Delhi 110006, Dec 1996 [4] T Takayanagi On the Wettability and its Improvement of Slurry to the 44 Wax Pattern, , 12 , vol 44 UDC 621.744.3.045 532.696.1 [5] T Nakano and F Mochizuki, Appliation of Robot Technology and Development of Microwave Drying Fumace in Lost Wax Casting, 86 , vol 86, no 1, pp 66-71, 2014 [6] Z Harun et al., Drying of a Multilayer Ceramic Shell Body, Proceedings of the 15th UK Conference of the Association of Computational Mechanics in Engineering , vol 15, pp 16-39, 2007 [7] M D V et al., Convective Drying of Ceramic Bricks by CFD:Transport Phenomena and Process Parameters Analysis, Energies, vol 13, pp 1-19, Apr 2020 [8] Nguy n H v c bi t i: Nxb Khoa H c Thu t, 2006, pp 220-224 [9] O T Ching Modelling And Simulation Of Drying Process For Ceramic Membrane Fabrication Faculty of Mechanical and Manufacturing Engineering Universiti Tun Hussein Onn Malaysia, Jul 2015 91 PH H nh Th y B -03-1984 M Tho T nh Ti n Giang a ch ng Nh m ,Th Tr n Nh H S n tho i : 0936389807 Mail : htbtran.sdh19@hcmut.edu.vn O 2002-2007: h c k t li u kim lo i t ng ih c H 2007-2009: K 2009-2010: Tu Nghi p T t Nam u Nh t 2010-2015: K t Nam 2016-2019: K t 2019-2021: K t Nam p ... xu t ng u ch y c n c i ti n m i, c n i n th u qu kinh t 2.T U 2.1 T u: 2.1.1 c Hi n t t nhi ng d ng k thu n xu t ch t u c th u ch y th v qu kinh t H u h n th u us d n th thu th i ti b u Vi... t th c th c hi gi a dung d ch huy n t m i,v i m ch huy b u qu kinh t n xu t th c t c u dung d ch huy t u lu b n xu t th c t u qu kinh 10 THUY T KHOA H C 3.1 3.1.1 tq u ch y m u ch y: Thi t k... y ti y ti y truy n nhi cs ng c a tia h ng ngo i n cho v t li u s y S yb n cao t n t ns chi a l p v t li u S nhi t cao , r t th m t v t li tr ng 3.2.3 s y p cho v t li u s y qua m S y b ng