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Forge forming method for 1Cr14Mn14Ni stainless steel ring part

A 1cr14mn14ni, stainless steel technology, applied in the field of stainless steel forging and forming, can solve the problems of serious mixed crystals and failure to meet the use requirements

Inactive Publication Date: 2014-11-19
GUIZHOU ANDA AVIATION FORGING
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Problems solved by technology

At present, the forging of 1Cr14Mn14Ni stainless steel mainly considers the sufficient crushing of the as-cast structure and the forgeability requirements of forgings. Usually, the grain size of 1Cr14Mn14Ni stainless steel forgings can only reach grade 1~3, and the mixed crystal phenomenon is very serious, which cannot be achieved. Requirements

Method used

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Experimental program
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Effect test

specific Embodiment approach

[0017] To implement the forging forming method of the 1Cr14Mn14Ni stainless steel ring of the present invention, it is necessary to provide equipment such as a high-temperature heating furnace, a press, a manipulator, and a ring rolling mill. The specific implementation is as follows:

[0018] The main chemical element content (weight percentage) of 1Cr14Mn14Ni stainless steel is: C content ≤ 0.12%, Mn content 13.0% ~ 15.0%, Si content ≤ 0.80%, Cr content 13.0% ~ 15.0%, Ni content 1.0% ~ 1.5%, containing S ≤ 0.025%, containing P ≤ 0.035%, and the balance being Fe.

[0019] The forging process steps of 1Cr14Mn14Ni stainless steel ring parts are as follows:

[0020] (1) Blank forging. The 1Cr14Mn14Ni stainless steel ingot was heated to 1160°C and held for 120 minutes, and after three upsetting and three drawing on the press, the forged 1Cr14Mn14Ni stainless steel billet was obtained, and the total deformation was greater than 70%.

[0021] (2) Blank heat treatment. The 1Cr14...

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Abstract

The invention discloses a forge forming method for a 1Cr14Mn14Ni stainless steel ring part. The method comprises the steps that a stainless steel ingot is heated to the temperature of 1150-1180 DGE C, and a stainless steel blank in a forging state is obtained after cogging forge with three upsetting and three drawing and deflection larger than 70%; after the stainless steel is heated to the temperature of 750-770 DEG C and the temperature is kept for 30 min, the temperature is reduced to 660-690 DEG C and kept for 30 min, and thermal treatment is performed; then the stainless steel blank is heat to the temperature of 960-980 DEG C for forge forming; the stainless steel blank is quenched by using forge waste heat and then tempered, and heat treatment after forge is performed with a temper cooling manner combining rapid cooling and slow cooling. According to the method, a 1Cr14Mn14Ni stainless steel forge part can obtain an austenite structure with fine, uniform and high dislocation density, and accordingly, excellent mechanical property, corrosion resistance, cold workability and toughness are obtained. Therefore, the 1Cr14Mn14Ni stainless steel ring part can replace precious metal materials such as high-temperature alloy and titanium alloy to manufacture components such as a compressor casing with high strength and corrosion resistance.

Description

technical field [0001] The invention relates to a forging forming method of stainless steel, in particular to a forging forming method of a 1Cr14Mn14Ni stainless steel ring. Background technique [0002] 1Cr14Mn14Ni stainless steel is an economical austenitic stainless steel with good atmospheric corrosion resistance and low-temperature mechanical properties. It can be used to replace high-temperature alloys, titanium alloys and other precious metal materials to manufacture high-strength corrosion-resistant compressor casings, etc. parts. At present, the forging of 1Cr14Mn14Ni stainless steel mainly considers the sufficient crushing of the as-cast structure and the forgeability requirements of forgings. Usually, the grain size of 1Cr14Mn14Ni stainless steel forgings can only reach grade 1~3, and the mixed crystal phenomenon is very serious, which cannot be achieved. Requirements. Contents of the invention [0003] The technical problem to be solved by the present inventi...

Claims

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Application Information

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IPC IPC(8): B21J5/00C21D9/40
Inventor 叶俊青苏春民王斌刘志棋陈明陈红芳徐东王文恋
Owner GUIZHOU ANDA AVIATION FORGING
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