Alloy valve and heat treatment process thereof
A technology of valves and alloys, which is applied in the field of alloy valves and their heat treatment processes, can solve the problems of heat treatment effects not reaching expectations, affecting service life, and multiple processing stresses, so as to enhance contact fatigue strength and impact toughness, prolong service life, The effect of improving workpiece quality
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Embodiment 1
[0036]This embodiment provides a heat treatment process for an alloy valve. The alloy valve includes the following components by mass fraction: C: 0.53%, Mg: 1.58%, Ni: 1.44%, Mo: 1.21%, Ag: 0.09%, P : 0.010%, Zr: 0.31%, Cu: 0.45%, Al: 3.36%, Co: 0.48%, Mn: 1.25%, V: 0.01%, Zn: 0.86%, W: 0.02%, Pt: 0.19%, Fe : 6.2%, Sn: 2.6%, filler: 0.28%, the rest is Ti and unavoidable impurities;
[0037] The alloy valve heat treatment process specifically includes the following steps:
[0038] (1) One-time heating: place the cast valve in a heating furnace, heat it to 520°C, and keep it warm for 17 minutes;
[0039] (2), secondary heating: continue to heat up the heating furnace, the temperature rises to 660 ° C, keep warm for 27 minutes,
[0040] (3) Three times of heating: continue to heat up at the temperature of step 2, the temperature rises to 830°C, and keeps warm for 35 minutes;
[0041] (4) Cooling: Combine air cooling and air cooling when cooling, first use air cooling to cool ...
Embodiment 2
[0049] This embodiment provides a heat treatment process for an alloy valve. The alloy valve includes the following components by mass fraction: C: 0.55%, Mg: 1.61%, Ni: 1.52%, Mo: 1.26%, Ag: 0.11%, P : 0.011%, Zr: 0.32%, Cu: 0.46%, Al: 3.41%, Co: 0.51%, Mn: 1.27%, V: 0.013%, Zn: 0.88%, W: 0.027%, Pt: 0.21%, Fe : 6.7%, Sn: 2.8%, filler: 0.29%, the rest is Ti and unavoidable impurities;
[0050] The alloy valve heat treatment process specifically includes the following steps:
[0051] (1) One-time heating: place the cast valve in a heating furnace, heat it to 540°C, and keep it warm for 15 minutes;
[0052] (2), secondary heating: continue to heat up the heating furnace, the temperature rises to 680 ℃, keep warm for 20-30min,
[0053] (3) Three times of heating: continue to heat up at the temperature of step 2, the temperature rises to 800-860°C, and keeps warm for 32 minutes;
[0054] (4) Cooling: Combine air cooling and air cooling when cooling, first use air cooling to co...
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