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Heat Treatment Process to Improve Strength of 05cr17ni4cu4nb Steel

A technology of strength and craftsmanship, applied in the field of heat treatment technology, can solve the problems of poor mechanical properties of 05Cr17Ni4Cu4Nb steel, and achieve the effect of improving the resistance to micro-deformation, improving the yield strength, and tapping the potential of the material.

Active Publication Date: 2020-01-17
HARBIN TURBINE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention aims to solve the problem of poor mechanical properties of 05Cr17Ni4Cu4Nb steel obtained by adopting the existing heat treatment process, and provides a heat treatment process for improving the strength of 05Cr17Ni4Cu4Nb steel

Method used

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  • Heat Treatment Process to Improve Strength of 05cr17ni4cu4nb Steel
  • Heat Treatment Process to Improve Strength of 05cr17ni4cu4nb Steel
  • Heat Treatment Process to Improve Strength of 05cr17ni4cu4nb Steel

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specific Embodiment approach 1

[0026] Specific implementation mode one: the heat treatment process for improving the strength of 05Cr17Ni4Cu4Nb steel in this embodiment comprises the following steps:

[0027] Step 1: Keep the 05Cr17Ni4Cu4Nb steel sample at the austenitizing temperature of 1035-1045°C for 1-2 hours, cool it to 600-610°C with the furnace, keep it for 4-5 hours, and then take it out of the furnace and air-cool it to room temperature;

[0028] Step 2: Then, the 05Cr17Ni4Cu4Nb steel sample is heated again to 600-610° C. for 4-5 hours, and then it is taken out of the furnace and air-cooled to room temperature.

specific Embodiment approach 2

[0029] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that in step 1, the austenitizing temperature is kept at 1040° C. for 1 hour. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0030] Specific embodiment 3: The difference between this embodiment and specific embodiment 1 or 2 is that in step 1, the furnace is cooled to 605° C. and kept for 4 hours. Others are the same as in the first or second embodiment.

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Abstract

The invention provides a heat treatment process for improving the strength of 05Cr17Ni4Cu4Nb steel, and relates to the heat treatment process for the 05Cr17Ni4Cu4Nb steel. The heat treatment process aims at solving the problem that the mechanical property of the 05Cr17Ni4Cu4Nb steel obtained by an existing heat treatment process is not good. The process comprises the steps that firstly, a 05Cr17Ni4Cu4Nb steel sample is heat-insulated at the austenitizing temperature, is cooled with the furnace cooling and then is heat-insulated, taken out from a furnace and air-cooled to the room temperature;and secondly, the steel sample is heated again and heat-insulated and is taken out from the furnace and air-cooled to the room temperature. By the adoption of the heat treatment process, the strengthof the material is improved while the plasticity is ensured, and the mechanical property of the 05Cr17Ni4Cu4Nb material is improved remarkably, and in particular, the resistance to micro-deformation of the material is improved. The heat treatment is used for the heat treatment of the 05Cr17Ni4Cu4Nb steel.

Description

technical field [0001] The invention relates to a heat treatment process of 05Cr17Ni4Cu4Nb steel. Background technique [0002] 05Cr17Ni4Cu4Nb material is similar to foreign 17-4PH (USA), X5CrNiCuNb174 (Germany), Z5CNU17.04 (France), SUS630 (Japan) grades, and is a typical martensitic precipitation hardening stainless steel. Martensitic precipitation hardening stainless steel was developed as early as the 1940s by Armco in the United States. The 05Cr17Ni4Cu4Nb material has low carbon content and high Cr and Ni content, which ensures that the steel microstructure is low-carbon martensite with good plasticity and toughness. The matrix, and the higher Cu content, provide dispersion strengthening, so that this steel has good plasticity, toughness, corrosion resistance, vibration attenuation, etc., and is widely used in nuclear power generation, offshore platforms, paper industry, food engineering, etc. Especially the good vibration attenuation performance makes this material mo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21D6/00
CPCC21D6/004
Inventor 李兴东赵龙飞周新灵徐清泉刘新新吕振佳李海霞王丽艳田宇代海燕马新博黄亮
Owner HARBIN TURBINE
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