Ion nitriding heat treatment process of fv520b material

A FV520B, ion nitriding technology, applied in metal material coating process, coating, solid-state diffusion coating, etc., to achieve the effect of improving bearing capacity and fatigue life

Active Publication Date: 2019-05-07
SHENYANG TURBO MASCH CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, there is no report on the ion nitriding process of FV520B material in the prior art. For parts that require high strength, corrosion resistance, and surface wear resistance, ion nitriding treatment can significantly improve the wear resistance of the workpiece. It can meet the requirements of high strength, corrosion resistance and wear resistance at the same time. At the same time, due to the high strength and high hardness of the core, it can also significantly improve the bearing capacity and fatigue life of the workpiece.

Method used

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  • Ion nitriding heat treatment process of fv520b material
  • Ion nitriding heat treatment process of fv520b material
  • Ion nitriding heat treatment process of fv520b material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The chemical composition of the FV520B material used in this example: C: 0.04wt.%; Si: 0.42wt.%; Mn: 0.74wt.%; S: 0.005wt.%; P: 0.021wt.%; Cr: 13.80wt.%. %; Mo: 1.46wt.%; Ni: 5.39wt.%; Cu: 1.49wt.%; Nb: 0.30wt.%; It is subjected to ion nitriding heat treatment, including the following steps:

[0030] (1) solution treatment, at 1050 ℃, heat preservation for 2 hours, then air cooling;

[0031] (2) Adjustment treatment, heat preservation at 850°C for 2.5 hours, and then oil cooling;

[0032] (3) Ion nitriding treatment, ion nitriding at 530°C for 18.0 hours, furnace cooling down to 200°C, and then out of the furnace and air cooling;

Embodiment 2

[0041] The chemical composition of the FV520B material used in this example: C: 0.04wt.%; Si: 0.42wt.%; Mn: 0.74wt.%; S: 0.005wt.%; P: 0.021wt.%; Cr: 13.80wt.%. %; Mo: 1.46wt.%; Ni: 5.39wt.%; Cu: 1.49wt.%; Nb: 0.30wt.%; It is subjected to ion nitriding heat treatment, including the following steps:

[0042] (1) solution treatment, at 1050 ℃, heat preservation for 2 hours, then air cooling;

[0043] (2) Adjustment treatment, heat preservation at 850°C for 2.5 hours, and then oil cooling;

[0044] (3) Ion nitriding treatment, ion nitriding at 530°C for 20.0 hours, furnace cooling down to 200°C, and then air cooling out of the furnace;

Embodiment 3

[0053] The chemical composition of the FV520B material used in this example: C: 0.04wt.%; Si: 0.42wt.%; Mn: 0.74wt.%; S: 0.005wt.%; P: 0.021wt.%; Cr: 13.80wt.% %; Mo: 1.46wt.%; Ni: 5.39wt.%; Cu: 1.49wt.%; Nb: 0.30wt.%; Ion nitriding heat treatment at different temperatures was carried out, including the following steps:

[0054] (1) solution treatment, at 1050 ℃, heat preservation for 2 hours, then air cooling;

[0055] (2) Adjustment treatment, heat preservation at 850°C for 2.5 hours, and then oil cooling;

[0056] (3) Ion nitriding treatment, ion nitriding at 500°C for 20.0 hours, furnace cooling down to 200°C, and then out of the furnace and air cooling;

[0057] See Table 5 for the infiltrated layer index of the tested example 3FV520B material after ion nitriding heat treatment, ion nitriding at 500°C also has a better infiltrated layer depth, the surface hardness is greatly improved, and the core hardness is also higher.

[0058] Table 5 Example 2 The permeation perform...

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Abstract

The invention discloses an ion nitriding heat treatment process for FV520B material, which belongs to the technical field of heat treatment process. The process includes: (1) solid solution treatment, the temperature is 1050°C, the holding time is "effective thickness / 45mm" for one hour, and then air cooling; (2) Adjustment treatment, temperature 850°C, holding time according to "effective thickness / 40mm" hours, and then oil cooling; (3) Ion nitriding treatment, ion nitriding at 500-530°C for 18.0-30.0 hours, furnace cooling and cooling to 200°C, then take it out of the oven and air cool. The present invention applies the ion nitriding heat treatment process to the FV520B material for the first time, and omits the aging heat treatment process, and combines the two heat treatment processes of aging and ion nitriding together. The workpiece processed by the invention meets the requirements of high strength, corrosion resistance and wear resistance, and at the same time, the core has high strength and high hardness, which significantly improves the bearing capacity and fatigue life of the workpiece.

Description

technical field [0001] The present invention relates to the technical field of heat treatment process, in particular to an ion nitriding heat treatment process of FV520B material. The process is suitable for processing all parts requiring high strength, corrosion resistance, and surface wear resistance, and is also suitable for processing other FV520B materials. Artifacts of material. Background technique [0002] At present, there is no report on the ion nitriding process of FV520B material in the prior art. For parts that require high strength, corrosion resistance, and surface wear resistance, ion nitriding treatment can significantly improve the wear resistance of the workpiece. It can meet the requirements of high strength, corrosion resistance and wear resistance at the same time. At the same time, due to the high strength and high hardness of the core, it can also significantly improve the bearing capacity and fatigue life of the workpiece. The ion nitriding heat tre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C8/38
CPCC23C8/38
Inventor 张忠和陈炜张尔康王飞宇程亮郭杨
Owner SHENYANG TURBO MASCH CORP
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