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Thermal treatment process for high-hardenability alloy bushing

A high hardenability and alloy technology, applied in heat treatment furnaces, heat treatment equipment, manufacturing tools, etc., can solve the problems of high energy consumption, long production cycle of high hardenability alloy bushings, and easy aging of the medium, and achieve production quality. Stabilize, improve product quality and production efficiency, and avoid the effect of deformation

Inactive Publication Date: 2017-04-19
潜山县凯创橡塑机械制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a heat treatment process for high hardenability alloy bushings. The invention overcomes the problems of long production cycle, easy aging of medium and high energy consumption in the processing of high hardenability alloy bushings in the prior art. After optimization, the actual production Stable quality, avoiding deformation, cracking and other phenomena, improving product quality and production efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Example 1 A heat treatment process for a high-hardenability alloy bushing. The alloy bushing is composed of the following chemical components by mass percentage: 0.22% carbon, 0.45% manganese, 0.67% silicon, 1.6% chromium, 0.2% molybdenum, nickel 0.25%, titanium 0.08%, niobium 0.6%, vanadium 0.12%, phosphorus ≤ 0.004%, sulfur ≤ 0.003%, and the rest is iron.

[0015] A heat treatment process for a high-hardenability alloy bushing, comprising the following steps:

[0016] (1) The alloy bushing is heated at a temperature of 960° C., kept for 24 hours, cooled to room temperature in an intermediate frequency furnace, and preformed and forged;

[0017] (2) Correct and trim the above-mentioned forged alloy bushings, stack the products after trimming, put them in a quenching furnace with a temperature of 920-960 ° C for 30 minutes, and take out the water to cool to room temperature;

[0018] (3) Put the alloy bushing in a tempering furnace for high-temperature tempering. The h...

Embodiment 2

[0021] Example 2 A heat treatment process for a high-hardenability alloy bushing, the alloy bushing is composed of the following chemical components by mass percentage: 0.35% carbon, 0.76% manganese, 0.83% silicon, 2.5% chromium, 0.24% molybdenum, nickel 0.36%, titanium 0.22%, niobium 0.85%, vanadium 0.20%, phosphorus ≤ 0.004%, sulfur ≤ 0.003%, and the rest is iron.

[0022] A heat treatment process for a high-hardenability alloy bushing, comprising the following steps:

[0023] (1) The alloy bushing is heated at a temperature of 960° C., kept for 24 hours, cooled to room temperature in an intermediate frequency furnace, and preformed and forged;

[0024] (2) Correct and trim the above-mentioned forged alloy bushings, stack the products after trimming, put them in a quenching furnace with a temperature of 920-960 ° C for 30 minutes, and take out the water to cool to room temperature;

[0025] (3) Put the alloy bushing in a tempering furnace for high-temperature tempering. The...

Embodiment 3

[0028] Example 3 A heat treatment process for a high-hardenability alloy bushing. The alloy bushing is composed of the following chemical components by mass percentage: 0.28% carbon, 0.58% manganese, 0.72% silicon, 1.8% chromium, 0.22% molybdenum, nickel 0.32%, titanium 0.17%, niobium 0.65%, vanadium 0.18%, phosphorus ≤ 0.004%, sulfur ≤ 0.003%, and the rest is iron.

[0029] A heat treatment process for a high-hardenability alloy bushing, comprising the following steps:

[0030] (1) The alloy bushing is heated at a temperature of 960° C., kept for 24 hours, cooled to room temperature in an intermediate frequency furnace, and preformed and forged;

[0031] (2) Correct and trim the above-mentioned forged alloy bushings, stack the products after trimming, put them in a quenching furnace with a temperature of 920-960 ° C for 30 minutes, and take out the water to cool to room temperature;

[0032] (3) Put the alloy bushing in a tempering furnace for high-temperature tempering. The...

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Abstract

The invention discloses a thermal treatment process for a high-hardenability alloy bushing. The alloy bushing is composed of the chemical components including, by mass, 0.22-0.35% of C, 0.45-0.76% of Mn, 0.67-0.83% of Si, 1.6-2.5% of Cr, 0.2-0.24% of Mo, 0.25-0.36% of Ni, 0.08-0.22% of Ti, 0.6-0.85% of Nb, 0.12-0.20% of V, not more than 0.004% of P, not more than 0.003% of S, and the balanced being Fe. Compared with the prior art, the thermal treatment process overcomes the problems that processing technologies of the high-hardenability alloy bushing are long in production period, a medium is liable to age, and energy consumption is high. After optimization, practical production quality is stable, and phenomena of deformation, cracking and the like are avoided, thereby improving product quality and production efficiency.

Description

technical field [0001] The invention relates to the technical field of alloy bushing processing, in particular to a heat treatment process for a high-hardenability alloy bushing. Background technique [0002] The traditional alloy bushing heat treatment process has high product cost, long production cycle, high labor intensity, and low product quality pass rate. For high-hardenability alloy bushing parts with complex structures, problems such as deformation and cracking are prone to occur. Different products and The same product has uneven hardness, and the oil quenching efficiency is low, the environment is poor, and the cost is high. Contents of the invention [0003] The purpose of the present invention is to provide a heat treatment process for high hardenability alloy bushings. The invention overcomes the problems of long production cycle, easy aging of medium and high energy consumption in the processing of high hardenability alloy bushings in the prior art. After op...

Claims

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Application Information

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IPC IPC(8): C22C38/04C22C38/02C22C38/44C22C38/50C22C38/48C22C38/46C21D9/00C21D1/18
CPCC22C38/04C21D1/18C21D9/0068C22C38/02C22C38/44C22C38/46C22C38/48C22C38/50
Inventor 张加和
Owner 潜山县凯创橡塑机械制造有限公司
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