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

Inactive Publication Date: 2018-04-17
张剑
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These processes are connected with each other and cannot be interrupted; in the current metal heat treatment process, the number of heating and tempering is generally small, the heat treatment effect is often not as expected, and the metal tends to retain more processing stress, which directly affects the service life

Method used

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Examples

Experimental program
Comparison scheme
Effect test

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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PUM

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Abstract

The invention relates to an alloy valve and a heat treatment process thereof. The alloy valve is prepared from, by mass part, 0.52% to 0.56% of C, 1.56% to 1.63% of Mg, 1.23% to 1.73% of Ni, 1.12% to1.35% of Mo, 0.08% to 0.12% of Ag, 0.010% to 0.015% of P, 0.031% to 0.35% of Zr, 0.45% to 0.47% of Cu, 3.23% to 3.54% of Al, 0.48% to 0.53% of Co, 1.12% to 1.35% of Mn, 0.010% to 0.015% of V, 0.85% to0.93% of Zn, 0.02% to 0.03% of W, 0.17% to 0.22% of Pt, 5.6% to 7.2% of Fe, 2.3% to 3.5% of Sn, 0.28% to 0.31% of filler and the balance Ti and inevitable impurities.

Description

technical field [0001] The invention relates to a heat treatment process, in particular to an alloy valve and a heat treatment process thereof. Background technique [0002] Metal heat treatment is to heat a metal workpiece in a certain medium to a suitable temperature, and keep it at this temperature for a certain period of time, and then cool it in a different medium at different speeds, by changing the surface or internal microstructure of the metal material A process in which the structure is used to control its performance. Thermal treatment process generally comprises heating, insulation, three processes of cooling, has only two processes of heating and cooling sometimes. These processes are connected with each other and cannot be interrupted; in the current metal heat treatment process, the number of heating and tempering is generally small, the heat treatment effect is often not as expected, and the metal tends to retain more processing stress, which directly affect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C14/00C22F1/18
CPCC22C14/00C22F1/183
Inventor 张剑
Owner 张剑
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