铸型界面换热系数的影响
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44 : 2008 4
4 433|439 h
ACTA METALLURGICA SINICA
Vol.44 No.4 ALeabharlann Baidur. 2008 pp.433{439
w _ . |r 0 b m )9 ud 6 9; / 9( z # k 2' 7@ -f QK) 3 , >{g\' ADC12 pzr\' AM50 E ^ 2>{ E +H EJb p EPVJ D Y x6Af/Q{PH*3 ,h{"sVP 4g(wEXPRVEG 8/ EC l,#g#1 FJx65 \'M4qq _3@g s l,#g N/| ^ "xl, #g - l,#g g(pz X s ECE$C$ l,#g ?s s; x`E T*ur\']AM50 Jb l,#g5|+9uuME T MEC O 8C '/-_ 5s x6Hj s V` l,#g s~f "xl,#g E ADC12, AM50, =r@g 7 no v TG249.2, TG292 %] A 4\v 0412;1961(2008)04;0433;07
(1) &9\
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+
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4
1] Ho K, Pehlke R D. Metall Trans, 1985 16B: 585 2] Pehlke R D. In: Cross M, Campbell J, eds., Proc 1995 7th Conf on Modeling of Casting, Welding and Advanced Solidi cation Processes, London: Minerals, Metals & Materials Soc (TMS), 1995: 373
a $
3] Guthrie R I L, Isac M, Kim J S, Tavares R P. Metall Mater Trans, 2000 31B: 1031 4] Hallam C P, Gri ths W D, Butler N D. Mater Sci Forum, 2000 329{330: 467 5] Krishnan M, Sharma D G R. Trans Am Foundrymen's Soc, 1995 102: 769 6] Muojekwu C A, Samarasekera I V, Brimacombe J K. Metall Mater Trans, 1995 26B: 361 7] Gozlan E, Bamberger M. Z Metallkd, 1987 78: 677 8] El{Mahallawy N A, Assar A M. J Mater Sci Lett, 1988 7: 205 9] Nishida Y, Matsubara H. Br Foundryman, 1976 69: 274 10] Davies V. Br Foundryman, 1980 73: 331 11] Sekhar J A, Abbaschian G J, Mehrabian R. Mater Sci Eng, 1979 40: 105 12] Bamberger M, Weiss B Z, Stupel M M. Mater Sci Technol, 1987 3: 49 13] Santos C A, Quaresma J M V, Garcia A. J Alloys Compd, 2001 319: 174 14] Hallam C P, Gri ths W D. Metall Mater Trans, 2004 35B: 721 15] Chiesa F. Trans Am Foundrymen's Soc, 1990 98: 193 16] Coates B, Argyropoulos S A. Metall Mater Trans, 2007 38B: 243 17] Dour G, Dargusch M, Davidson C. Int J Heat Mass Transfer, 2006 49: 1773 18] Guo Z P, Xiong S M, Cho S{H, Choi J{K. Acta Metall Sin, 2007 43: 607 (J K t 9 m v 'bV 2007 43: 607) 19] Nelson C W. In: SDCE, ed., Transaction of 6th International Die Casting Congress & Exhibition, Cleveland, OH: SDCE, 1970: 1 20] Hong S, Backman D G, Mehrabian R. Metall Mater Trans, 1979 10B: 299 21] Papai J, Mobley C. In: NADCA ed., Transactions of the NADCA Congress, Detroit, MI: NADCA, 1991: 377 22] Dour G, Dargusch M, Davidson C, Nef A. J Mater Process Technol, 2005 169: 223 23] Beck J V. J Heat Transfer, Trans ASME, 1977 99C: 314 24] Michalski L, Echersdort K, McGhee J. Temperature Measurement. New York: Wiley, 1991: 252. 25] Helenius R, Lohne O, Arnberg L, Laukli H I. Mater Sci Eng, 2005 A413{414: 52
(QK@ J ;d]2 > : ]]2> (
<D? BA> drUt<<U")*RE2 7 IaW @E C=
- 100084)
EFFECTS OF ALLOY MATERIALS AND PROCESS PARAMETERS ON THE HEAT TRANSFER COEFFICIENT AT METAL/DIE INTERFACE IN HIGH PRESSURE DIE CASTING
* /# cu='b Qn<L \ 7 0503J18 L * DVr'7 50675114 pzL rb^3 e7 2006CB605208{2 Y}]5/ : 2007{09{27, Y}L05/ : 2007{12{09 $: J ; 1981 A 3SA
Manuscript received 2007{09{27, in revised form 2007{12{09
GUO Zhipeng, XIONG Shoumei CHO Sang{Hyun, CHOI Jeong{Kil
Advanced Material R&D Center, Korean Institute of Industrial Technology, Inchon, Korea
Key Laboratory for Advanced Materials Processing Technology, Ministry of Education, Department of Mechanical Engineering, Tsinghua University, Beijing 100084
ABSTRACT High pressure die casting experiments were carried out using a step shape casting and two commercial alloys, the ADC12 aluminum alloy and the AM50 magnesium alloy. The metal/die interfacial heat transfer coe cient (IHTC) was determined using an home{developed inverse thermal program by applying the measured temperature as the input parameter. The results show that alloys mainly in uence the value of the IHTC and the duration maintaining for a higher IHTC value, but have little e ect on the shape of the IHTC pro le The IHTC of the thinner steps increases as the fast shot velocity increases The IHTC of the thicker steps decreases as the initial die temperature increases When the cast alloy is AM50, a higher casting pressure leads to a higher peak value of the IHTC at the thickest step. KEY WORDS interfacial heat transfer coe cien, high pressure die casting, ADC12 aluminum alloy, AM50 magnesium alloy, process parameter
=
Y
,
Y< NC
P
D ;T%yI ]qT 7$ COT6 D WDB# ;k+IJ b \|] to;w 5 6BD Mj } 6} ;+ zk D W DB# ;g+\6};w5Uq &aBD p = z&a}; D O T ($ 1Z D Z D |Z D
4
I
D / DB# ;!wk+!f~] q;w5 9w5@ e ., k+!f;f ' oyk+ !f 3' c;F 7 k+!f;"0D I (+ f T) w54q k Mj f & ADC12 & 7 ~ u;k+!f f'oy 3' W;F 7 e3 2 & AM50 &; M (2) 4 ~ u;k+!f 4 l "0D I jU f'7 ~ q;!0 k Mj tL ~ _ ; q k+!f 3' W;F m> _ M k+!f;*' U ~k_ &p|Uq 6_ k U# U oyU_ # ;k6_ (3) q & AM50, 3pp ; ~ Step 1 W Step 2 D B # ;k+!f~ q ;w5 q3pp m;3k+!f;* ' ZZS _ ; ~ Step 5 D B # ;k+!fw5 q t Z;D OT Step 5 DB# ;k+!f* ' 4t Z; D O T ;k+!f* ' e q (4) f & ADC12, 3pp Step 1 W Step 2 k+!f* ' ~k ;w5 AM50 ; r MNn tL3pp ; q W ~ DB # ;k+!f*'g 4 q y79 q?f 7 ~ DB# ;k+!fw5 4q (5) D B . w; \ N .,^Z _ ~ Step 5 D B # k+!f~ L q ;w5 tL DB\N ;7B Step 5 DB# k+!f*'
Correspondent: XIONG Shoumei, professor, Tel: (010)62773793, E-mail: smxiong@tsinghua.edu.cn Supported by Toyo Machinery & Metal Co., Ltd., (No.0503J18), National Natural Science Foundation of China (No.50675114) and National Basic Research Program of China (No.2006CB605208{2)
4 433|439 h
ACTA METALLURGICA SINICA
Vol.44 No.4 ALeabharlann Baidur. 2008 pp.433{439
w _ . |r 0 b m )9 ud 6 9; / 9( z # k 2' 7@ -f QK) 3 , >{g\' ADC12 pzr\' AM50 E ^ 2>{ E +H EJb p EPVJ D Y x6Af/Q{PH*3 ,h{"sVP 4g(wEXPRVEG 8/ EC l,#g#1 FJx65 \'M4qq _3@g s l,#g N/| ^ "xl, #g - l,#g g(pz X s ECE$C$ l,#g ?s s; x`E T*ur\']AM50 Jb l,#g5|+9uuME T MEC O 8C '/-_ 5s x6Hj s V` l,#g s~f "xl,#g E ADC12, AM50, =r@g 7 no v TG249.2, TG292 %] A 4\v 0412;1961(2008)04;0433;07
(1) &9\
4
+
: & 9 \oy q ? f Z O T
D 6D / DB!wk+!f;w5
439
& d; + fGi AM50 W ADC12 & .,;$ {*
4
1] Ho K, Pehlke R D. Metall Trans, 1985 16B: 585 2] Pehlke R D. In: Cross M, Campbell J, eds., Proc 1995 7th Conf on Modeling of Casting, Welding and Advanced Solidi cation Processes, London: Minerals, Metals & Materials Soc (TMS), 1995: 373
a $
3] Guthrie R I L, Isac M, Kim J S, Tavares R P. Metall Mater Trans, 2000 31B: 1031 4] Hallam C P, Gri ths W D, Butler N D. Mater Sci Forum, 2000 329{330: 467 5] Krishnan M, Sharma D G R. Trans Am Foundrymen's Soc, 1995 102: 769 6] Muojekwu C A, Samarasekera I V, Brimacombe J K. Metall Mater Trans, 1995 26B: 361 7] Gozlan E, Bamberger M. Z Metallkd, 1987 78: 677 8] El{Mahallawy N A, Assar A M. J Mater Sci Lett, 1988 7: 205 9] Nishida Y, Matsubara H. Br Foundryman, 1976 69: 274 10] Davies V. Br Foundryman, 1980 73: 331 11] Sekhar J A, Abbaschian G J, Mehrabian R. Mater Sci Eng, 1979 40: 105 12] Bamberger M, Weiss B Z, Stupel M M. Mater Sci Technol, 1987 3: 49 13] Santos C A, Quaresma J M V, Garcia A. J Alloys Compd, 2001 319: 174 14] Hallam C P, Gri ths W D. Metall Mater Trans, 2004 35B: 721 15] Chiesa F. Trans Am Foundrymen's Soc, 1990 98: 193 16] Coates B, Argyropoulos S A. Metall Mater Trans, 2007 38B: 243 17] Dour G, Dargusch M, Davidson C. Int J Heat Mass Transfer, 2006 49: 1773 18] Guo Z P, Xiong S M, Cho S{H, Choi J{K. Acta Metall Sin, 2007 43: 607 (J K t 9 m v 'bV 2007 43: 607) 19] Nelson C W. In: SDCE, ed., Transaction of 6th International Die Casting Congress & Exhibition, Cleveland, OH: SDCE, 1970: 1 20] Hong S, Backman D G, Mehrabian R. Metall Mater Trans, 1979 10B: 299 21] Papai J, Mobley C. In: NADCA ed., Transactions of the NADCA Congress, Detroit, MI: NADCA, 1991: 377 22] Dour G, Dargusch M, Davidson C, Nef A. J Mater Process Technol, 2005 169: 223 23] Beck J V. J Heat Transfer, Trans ASME, 1977 99C: 314 24] Michalski L, Echersdort K, McGhee J. Temperature Measurement. New York: Wiley, 1991: 252. 25] Helenius R, Lohne O, Arnberg L, Laukli H I. Mater Sci Eng, 2005 A413{414: 52
(QK@ J ;d]2 > : ]]2> (
<D? BA> drUt<<U")*RE2 7 IaW @E C=
- 100084)
EFFECTS OF ALLOY MATERIALS AND PROCESS PARAMETERS ON THE HEAT TRANSFER COEFFICIENT AT METAL/DIE INTERFACE IN HIGH PRESSURE DIE CASTING
* /# cu='b Qn<L \ 7 0503J18 L * DVr'7 50675114 pzL rb^3 e7 2006CB605208{2 Y}]5/ : 2007{09{27, Y}L05/ : 2007{12{09 $: J ; 1981 A 3SA
Manuscript received 2007{09{27, in revised form 2007{12{09
GUO Zhipeng, XIONG Shoumei CHO Sang{Hyun, CHOI Jeong{Kil
Advanced Material R&D Center, Korean Institute of Industrial Technology, Inchon, Korea
Key Laboratory for Advanced Materials Processing Technology, Ministry of Education, Department of Mechanical Engineering, Tsinghua University, Beijing 100084
ABSTRACT High pressure die casting experiments were carried out using a step shape casting and two commercial alloys, the ADC12 aluminum alloy and the AM50 magnesium alloy. The metal/die interfacial heat transfer coe cient (IHTC) was determined using an home{developed inverse thermal program by applying the measured temperature as the input parameter. The results show that alloys mainly in uence the value of the IHTC and the duration maintaining for a higher IHTC value, but have little e ect on the shape of the IHTC pro le The IHTC of the thinner steps increases as the fast shot velocity increases The IHTC of the thicker steps decreases as the initial die temperature increases When the cast alloy is AM50, a higher casting pressure leads to a higher peak value of the IHTC at the thickest step. KEY WORDS interfacial heat transfer coe cien, high pressure die casting, ADC12 aluminum alloy, AM50 magnesium alloy, process parameter
=
Y
,
Y< NC
P
D ;T%yI ]qT 7$ COT6 D WDB# ;k+IJ b \|] to;w 5 6BD Mj } 6} ;+ zk D W DB# ;g+\6};w5Uq &aBD p = z&a}; D O T ($ 1Z D Z D |Z D
4
I
D / DB# ;!wk+!f~] q;w5 9w5@ e ., k+!f;f ' oyk+ !f 3' c;F 7 k+!f;"0D I (+ f T) w54q k Mj f & ADC12 & 7 ~ u;k+!f f'oy 3' W;F 7 e3 2 & AM50 &; M (2) 4 ~ u;k+!f 4 l "0D I jU f'7 ~ q;!0 k Mj tL ~ _ ; q k+!f 3' W;F m> _ M k+!f;*' U ~k_ &p|Uq 6_ k U# U oyU_ # ;k6_ (3) q & AM50, 3pp ; ~ Step 1 W Step 2 D B # ;k+!f~ q ;w5 q3pp m;3k+!f;* ' ZZS _ ; ~ Step 5 D B # ;k+!fw5 q t Z;D OT Step 5 DB# ;k+!f* ' 4t Z; D O T ;k+!f* ' e q (4) f & ADC12, 3pp Step 1 W Step 2 k+!f* ' ~k ;w5 AM50 ; r MNn tL3pp ; q W ~ DB # ;k+!f*'g 4 q y79 q?f 7 ~ DB# ;k+!fw5 4q (5) D B . w; \ N .,^Z _ ~ Step 5 D B # k+!f~ L q ;w5 tL DB\N ;7B Step 5 DB# k+!f*'
Correspondent: XIONG Shoumei, professor, Tel: (010)62773793, E-mail: smxiong@tsinghua.edu.cn Supported by Toyo Machinery & Metal Co., Ltd., (No.0503J18), National Natural Science Foundation of China (No.50675114) and National Basic Research Program of China (No.2006CB605208{2)