1Cr10Co6MoVNb steel cogging and forging method

A billet forging and steel casting technology, which is applied in the field of billet forging of 1Cr10Co6MoVNb steel, can solve the problems of high manufacturing cost, low production efficiency, and large metal burning loss, so as to reduce the difficulty of billet billeting, reduce the production of carbides, The effect of increasing the heating temperature

Active Publication Date: 2014-10-08
GUIZHOU ANDA AVIATION FORGING
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Problems solved by technology

This method has low production efficiency, long cycle time, large metal burning loss and high manufacturing cost

Method used

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Experimental program
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Effect test

specific Embodiment approach

[0013] To implement the billet forging method of 1Cr10Co6MoVNb steel according to the present invention, it is necessary to provide equipment such as a high-temperature heating furnace, a press, and a manipulator. The specific implementation is as follows:

[0014] The main chemical element content (weight percentage) of 1Cr10Co6MoVNb steel is: C content 0.06% ~ 0.11%, Mn content 0.60% ~ 1.15%, Si content 0.10% ~ 0.70%, Cr content 9.80% ~ 11.20%, content Ni content 0.20%~0.80%, Mo content 0.50%~1.00%, V content 0.10%~0.35%, Nb content 0.20%~0.45%, Co content 5.00%~7.00%, B content 0.004%~ 0.012%, N content 0.010% ~ 0.35%, S content ≤ 0.020%, P content ≤ 0.020%, the balance is Fe.

[0015] The blank forging process steps of 1Cr10Co6MoVNb steel are as follows:

[0016] Take 1Cr10Co6MoVNb steel ingot with a size of Φ600mm×780mm (about 1.5 tons); put 1Cr10Co6MoVNb steel ingot into a heating furnace with a furnace temperature of 750°C and keep it warm for 120 minutes; Uniformly ...

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Abstract

The invention discloses a 1Cr10Co6MoVNb steel cogging and forging method. The method comprises the steps that a single 1Cr10Co6MoVNb steel cast ingot with the weight ranging from 1.2 tons to 1.8 tons is placed into a heating furnace, wherein the charging temperature ranges from 740 DEG C to 750 DEG C and is kept for 100 min to 120 min; the temperature is made to rise at the heating speed ranging from 60 DEG C / h to 80 DEG C / h to range from 940 DEG C to 950 DEG C, and the temperature is kept for 120 min to 150 min; then the temperature is made to rise at the heating speed ranging from 100 DEG C / h to 120 DEG C / h to range from 1140 DEG C to 1150 DEG C; one heating forging and cogging is carried out on the cast ingot, pressing upsetting is carried out three times to four times, and the pressing quantity for each time ranges from 30 mm to 40 mm; pressing and drawing-out are carried out six times to eight times, and the pressing quantity for each time ranges from 10 mm to 20 mm; finally, upsetting and rolling are carried out, wherein the initial forging temperature is larger than or equal to 1140 DEG C, and the final forging temperature is larger than or equal to 950 DEG C. According to the 1Cr10Co6MoVNb steel cogging and forging method, the cogging difficulty is reduced, the cogging yield is improved, the production cycle is shortened, and production efficiency is improved. The 1Cr10Co6MoVNb steel cogging and forging method is mainly used for cogging and forging forge pieces such as a high-pressure compressor disc and a rotor blade of an aero-engine.

Description

technical field [0001] The invention relates to a blank forging method of stainless steel, in particular to a blank forging method of 1Cr10Co6MoVNb steel. Background technique [0002] 1Cr10Co6MoVNb steel is a martensitic stainless steel with high thermal strength, thermal stability and oxidation resistance, good fatigue strength and creep resistance, low notch sensitivity, and can be used at high It is usually used in the manufacture of high-pressure compressor discs, rotor blades, spacers and sealing rings of aero-engines and other important components. [0003] Due to the high content of Co in 1Cr10Co6MoVNb steel, it can promote the formation of carbides and enrich them on the grain boundaries, which increases the difficulty of hot working blanking. Usually it is necessary to use multiple fires to carry out forging blanking. This method has low production efficiency, long cycle time, large metal burning loss and high manufacturing cost. Contents of the invention [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21J5/00C21D8/00
Inventor 叶俊青邹伟成陆祥任腾飞李艳红何昱柴生琳周建强
Owner GUIZHOU ANDA AVIATION FORGING
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