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1 22 2 Ò Ä Vol. 22 No ý 4 TORPEDO TECHNOLOGY Apr 钼合金配气阀体材料性能分析及改进措施,, ( ï Ÿ ek æ, ä ï, ) : éàƒ q œ, ãš éœ p, j eàƒð q, é Š Ì Æ ø e Š, eá Ê á, š Å Ñ, Ñ ø, žk q ºÀ : q; ; ; p f É ú: TJ h u: A ú: (2014) Analysis on Properties of Molybdenum Alloy for Pneumatic Valve with Improvement Approaches BAO Hai-ge, TONG Fa-song, WANG Tian-xiao (Military Representative Office, Naval Armament Department Stationed in Anshan Iron and Steel Group Corporation, Anshan , China) Abstract: Aiming at the crack problem in domestic pneumatic valves, both domestic and foreign molybdenum alloy pneumatic valves are compared in terms of chemical analysis, microstructure, and stretching performance. The components, metallurgies and plastic forming technologies of the molybdenum alloy in China and abroad are analyzed, and some improvement approaches are offered, such as adopting electron beam purification melting method after vacuum melting, and taking extrusive breakdown and multiple forging processes, which can meet the requirement of engineering test. These improvement approaches can improve the properties of molybdenum alloy for pneumatic valve. Keywords: pneumatic valve; molybdenum alloy; microstructure; stretching performance 0 Íœ, qq l, æ ý å qá g q, áá Ñ (100~850 ), j ÁÊq g Ñ ÿ, á p f ŒÁ g Ñ, ÿ s qøq Í ü, é q ü ƒ Õ, q sy [1-3] Á, Ñ œ q, Š, q ŒÐø é, eàƒ Ð q Š Ì Ækœ Ð ø, q œ å ê t { ; ~v (1966-),, ø,

2014 ý 4 22 1 ÍÂƒ v q ŒÐ é q ãš, Š ø, ƒq ŠÕ 1 êvœ q Ž, py é ( À 1) j Œ ý Ã, ê, ý,, Êq, mq p, Ž, p é y ( À 2)œ,, í ë, Ñ ž, Ñ š ŒÐ q Å,, e ÿ Ð f š p, ê ç Ò, Á q Ðœ í Ÿ 1 ÍÂƒ É Components of Russian

2 Microstructures of Russian pneumatic valve material in cross section and longitudinal section Š vœ q œ æ p, 2 q, q s, fá q, qá Ÿ 2 ÍÂƒ Œ Table 2 Test results of tensile strength of Russian

2 2014 ý ÍÂƒ v q ŒÐ é q ãš, Š ø, ƒq ŠÕ 1 êvœ q Ž, py é ( À 1) j Œ ý Ã, ê, ý,, Êq, mq p, Ž, p é y ( À 2)œ,, í ë, Ñ ž, Ñ š ŒÐ q Å,, e ÿ Ð f š p, ê ç Ò, Á q Ðœ í Ÿ 1 ÍÂƒ É Components of Russian pneumatic valve material Š Ti Zr C Mo /% q Table 1 Fig. 1 1 ÍÂƒ Å Ñƒ Macrostructure of Russian pneumatic valve material in longitudinal section 2 ÍÂƒ Å ÑÅ Fig. 2 Microstructures of Russian pneumatic valve material in cross section and longitudinal section Š vœ q œ æ p, 2 q, q s, fá q, qá Ÿ 2 ÍÂƒ Œ Table 2 Test results of tensile strength of Russian pneumatic valve material at room temperature «σ 0.2/MPa σ b/mpa δ/% A-1( ) A-2( ) B-1( ) B-2( ) s nñ (<850 ), ÿ, j e Í, Ì š, Ã ê ã 2 ˆÍÂƒ Œ d ŒÐ q, á Á qêq 10 p é å Š,, 1, 2, 7 ë Ti kð, j Mo, ãš Zr 0.003%( 3) Š, Œ q Šd ø ( Ÿ 360), Ti, Zr žkq, [1] Ÿ 3 ˆÍÂƒ ƒn ¾ É Table 3 Quantitative analysis results of American pneumatic valve material by electron probe /% p Mo Ti /% p Mo Torpedo Technology Š Š Ti ¼Âƒ 3.1 Àƒ Œ q, q v Š, Àg q ã Š ƒæ TZM ( 4), ŒÐ, ÀÐ q Ñ p,

2014 ý 2, : q Š œ 1 ŒÐ éàg q žkœ, Ž Ã ê(50~100 µm), Á š, f Ti Zr, Á Ñ TiC ZrC ( À 3), ÁÊq ŒÎ q [4-5] Ÿ 4 râƒ ä É Table 4 Chemical composition of domestic pneumatic valve material Š Ti Zr C Mo /% 0.

3 Microstructures of domestic pneumatic valve in cross section and longitudinal section Á éžkœ, Êq áá Ñ ( À 4a), Š, Ñ Š, Š ì é 20 μm Ò ( À 4b), gò è Ti Zr( À 5), ì e è 9.7~9.9 g/cm 3, êf è 10.

3 2014 ý 2, : q Š œ 1 ŒÐ éàg q žkœ, Ž Ã ê(50~100 µm), Á š, f Ti Zr, Á Ñ TiC ZrC ( À 3), ÁÊq ŒÎ q [4-5] Ÿ 4 râƒ ä É Table 4 Chemical composition of domestic pneumatic valve material Š Ti Zr C Mo /% ~ q 3 râƒ Å ÑÅ Fig. 3 Microstructures of domestic pneumatic valve in cross section and longitudinal section Á éžkœ, Êq áá Ñ ( À 4a), Š, Ñ Š, Š ì é 20 μm Ò ( À 4b), gò è Ti Zr( À 5), ì e è 9.7~9.9 g/cm 3, êf è 10.2 g/cm 3 š, j Š, Œ Ð, g Á ø, Ás, g q, ÁÐ q ê q Ò, Á ø, ƒ ÿ q s q, Ð, ƒ Ñ, ƒ, d l øû eà 4 râƒ nàdf Fig. 4 Scanning electron microscope(sem) photos of domestic pneumatic valve material 5 nà «Œ Fig. 5 Energy spectrum calibration of impurities under SEM j 5 žk Œ, Àg q æ, pì Á áá Ñø, p, p p üp, «p Ÿ 5 râƒ Œ Table 5 Test results of tensile strength of domestic pneumatic valve material at room temperature «σ 0.2 /MPa σ b/mpa δ/% / Š, q f ø, Êq k á Ò, ê è êf ø ŒÐ, Áå «á n Šù, á Ð, Æ fð, s g, ünsæ ø Á ø ƒÿ s Ð, ç œ Ò [6] 3.2 Mo 1 q, 2 á ŒÐ Àg q é v q( 6), f (0.076%), s q d, O N ý v q ý ø î á, Àq á 100% 123

2014 ý 4 22, Á î ç Ñ, îžk Ðf q, Š îí, Á 10 3 ~10 4 Pa l, fp, Õ, nff ŒÐ 2 Œ, Ñ, üœ Ášÿ š Å Ål, ÿ Ð Ÿ 6 r ÍÂƒ g «ÿ Table 6 Contrast of main impurities contents between domestic and Russian pneumatic

000 9 š Å, é q Ž ( À 6)žk Œ, q Ã,, í ;, q, q, ìéá 50~500 μm œ æ ( 7), í Á, p p ø Ñ, p Ñf 10%, Õ Ì, p êf 5%, p, Ì å š Å, ƒ q Œe Ñ, p Š žk, š Šùø, ƒ áá, Œ ã Ÿ 7 râƒ ï ýq Œ Table 7 Test results of room

4 2014 ý 4 22, Á î ç Ñ, îžk Ðf q, Š îí, Á 10 3 ~10 4 Pa l, fp, Õ, nff ŒÐ 2 Œ, Ñ, üœ Ášÿ š Å Ål, ÿ Ð Ÿ 6 r ÍÂƒ g «ÿ Table 6 Contrast of main impurities contents between domestic and Russian pneumatic valve materials O C N vœ q Àg q( ) Àg q( á ) š Å, é q Ž ( À 6)žk Œ, q Ã,, í ;, q, q, ìéá 50~500 μm œ æ ( 7), í Á, p p ø Ñ, p Ñf 10%, Õ Ì, p êf 5%, p, Ì å š Å, ƒ q Œe Ñ, p Š žk, š Šùø, ƒ áá, Œ ã Ÿ 7 râƒ ï ýq Œ Table 7 Test results of room temperature tensile strength of domestic valve material after extrusive breakdown «σ 0.2/MPa σ b/mpa δ/% Š, g Œ q s e, é, Ã ý å œ ìé, žká 900~1 500, š, d n Œ î Ã ÅÎ, Ã, p j áá Ñ Ã, é «es Ã å, žk ÐÑ - ø æ æ Ñ Ð ø, š qs Íé ø À 7 š Å Ñ nf Å ( 8) Fig. 6 6 râƒ ï ýq Microstructure of domestic pneumatic valve material after extrusive breakdown Fig. 7 7 ³² À³qÂƒ Microstructure of multi-step forged semifinished valve 4 e q q, Ñ, n 124 Torpedo Technology

5 2014 ý 2, : q Š œ 1 Ÿ 8 À³ Œ Table 8 Room temperature tensile strength of multistep forged finished valve sample «σ 0.2/MPa σ b/mpa δ/% œ Š ø, Œ,, š Å Ñ, Ã p, q q e á 2 ø, œ á, fš (O, N, C), e Êq Ì e øø,, e Ã, ë Ì, q õ h: [1],. q q ÿ [J]., 1999, 7(1): [2] ô,,. Íœ q Š [J]. ã, 2003, 22(z1): Cui Jing-yuan, Hu Yu-li, Yang Jie. Finite Element Analysis of Steam Distributing Valve of Piston Engine[J]. Mechanical Science and Technology for Aerospace Engineering, 2003, 22(z1): [3] ˆ,,. Š [J]., 2007, 15(3): Zhao Jin-feng, Hu Yu-li, Zhou Peng. Finite Element Analysis of Rotary Steam- distributing Valves[J].Torpedo Technology, 2007, 15(3): [4],. TZM œ [J]. À, 2005, 29(5): Wu Xin-guang, Du Xiao-bin. TZM Alloy and Its Pro- perties[j]. China Molybdenum Industry, 2005, 29(5): [5], Êh,. TZM Œ[J]. ã, 1983, 3(1): [6], ï,. è [J]. ã ø, 2008, 13(4): Zhang Jian-de, Zeng Zhou-shan, Xie Fei. Microstructures and Properties of Fine-grained Molybdenum Rod Prepared by Hot Deformation[J]. Materials Science and Engineering of Powder Metallurgy, 2008, 13(4): («{ ±: ) ÒÄ rº 1. œ Ñã n ÿ î., ä v,,. 2012, 20(6). 2. œ Á ÿ., n,,. 2012, 20(5). 3. Æ Í œ ã Š., þ, å,. 2011, 19(5). 4. Êf œ ãš.,,,. 2011, 19(4). 5. Á ÿ î., h. 2011, 19(4). 6. é œ ý., Ó,,. 2010, 18(3). 7. Š. ˆ,,. 2007, 15(3). 8. m î. ç, â,,. 2006, 14(1). 9. q ½Ï g œ Œ. ø. 2005, 13(4). 10. œ ã m Š. À,. 2005, 13(2). 11. p½ï. ø, À,. 2005, 13(1). 12. œ.,,. 2004, 12(3). 13. q q ÿ.,. 1999, 7(4)

Microsoft Word - 103Pan01.doc

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