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Method for forging formation of 16Cr3NiWMoVNbE forge piece

A technology for forgings and steel ingots, applied in the direction of metal processing equipment, etc., can solve the problems of low magnification and no improvement effect, and achieve the effect of avoiding residual stress

Inactive Publication Date: 2016-03-02
GUIZHOU ANDA AVIATION FORGING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The forging process of 16Cr3NiWMoVNbE forgings is prone to the problem of low magnification and clear crystals. After heat treatment, the low magnification has no improvement effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0016] The chemical composition of the alloy steel is as follows:

[0017] alloy element

C

mn

Si

Cr

Ni

Mo

W

V

Nb

S

P

percentage content

0.193

0.64

0.83

2.76

1.26

0.48

1.19

0.43

0.14

0.00015

0.012

[0018] The steps of this method are as follows:

[0019] Take a 16Cr3NiWMoVNbE steel ingot of a certain specification, put it into a heating furnace and heat it to 350°C-450°C for 3 hours; then raise its temperature to 1020°C-1050°C at a speed of 90°C-100°C, and keep it for 3 hours; Raise the temperature from 70°C to 80°C to 1200°C to 1250°C, and keep the temperature for 3 hours.

[0020] Put the steel ingot vertically on the bottom plate of the press, and drive the upper cutting board of the press to upset the steel ingot. The pressing amount of the upper cutting board for each upsetting is 40mm~45mm, and after each pressing, stop for 3s~5s; When the downward pressure r...

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PUM

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Abstract

The invention discloses a method for forging formation of a 16Cr3NiWMoVNbE forge piece. The method comprises the following steps: firstly, taking a 16Cr3NiWMoVNbE steel ingot in certain specification, and heating the steel ingot to reach a required temperature according to a certain heating curve; upsetting the steel ingot, wherein during upsetting, the press amount is 40 to 45 mm each time, after each time of pressing, pausing for 3s to 5s is performed; when the press amount reaches 200 to 250 mm, carrying out rolling drawing; upsetting to reach a required size; and then heating the steel ingot for 10 to 15 min to reach a temperature of 1070 DEG C to 1120 DEG C, and rolling for formation after upsetting and punching. Due to the adoption of the method, low magnitude clear crystal on the 16Cr3NiWMoVNbE steel ingot can be avoided, and meanwhile trace elements in alloy can also be homogenized. The method is used for forging formation of the 16Cr3NiWMoVNbE forge piece.

Description

technical field [0001] The invention relates to a forging method, in particular to a forging forming method of a 16Cr3NiWMoVNbE forging. Background technique [0002] 16Cr3NiWMoVNbE is an alloy structural steel with a high degree of alloying for gears. The alloy contains strong carbide elements with high melting points such as Cr, W, Mo, and V. It is easy to form high melting point, high hardness, and high dispersion during tempering. Carbide, thereby improving the thermal strength of the alloy. Moreover, because a large amount of carbides are precipitated in the grains or grain boundaries of the 16Cr3NiWMoVNbE alloy, the pinning effect of the carbides on the grain boundaries is more obvious, which slows down the grain growth trend. At the same time, the alloy has good hardenability, high tensile strength, high toughness and plasticity. After carburizing, quenching and low temperature tempering, the surface has high hardness, while the strength of the core, With good tough...

Claims

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Application Information

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IPC IPC(8): B21J5/08B21J1/06
CPCB21J5/08B21J1/06
Inventor 邱伟葛金锋袁慧徐文帅杨志国
Owner GUIZHOU ANDA AVIATION FORGING
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