Anti-crack manufacturing method of duplex stainless steel F53 forging forming

A duplex stainless steel, forging molding technology, applied in the direction of manufacturing tools, forging/pressing/hammer devices, heating/cooling equipment, etc., can solve the problems of low forging efficiency, high energy consumption, low efficiency, etc. The effect of reducing energy consumption and improving performance

Inactive Publication Date: 2020-08-25
江阴市劲松科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, the efficiency is low and the energy consumption is high
Moreover, the forging efficiency is relatively low and the energy consumption is relatively high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1: A kind of manufacturing method of duplex stainless steel F53 forging forming anti-crack, its steps are:

[0017] ①Put the steel ingot into the heating furnace, install the furnace to avoid direct flame injection, heat with the furnace at less than 60°C / h, and keep it warm for 4 hours at 300°C-350°C;

[0018] ② After 4 hours of heat preservation, the steel ingot with a temperature of 300°C to 350°C is raised to 1020°C to 1050°C at a rate of 100°C / h, and held for 20 hours;

[0019] ③Heat the steel ingot with a temperature of 1020°C to 1050°C at a rate of 70°C / h to 100°C / h to 1200°C and keep it warm for 20 hours;

[0020] ④Take out the steel ingot obtained in step ③ and put it on the forging machine. Use the forging head with an arc-shaped bottom to lightly tap the steel ingot to round and chamfer the corners, straight upsetting, and the single pressing amount of the forging head of the forging machine is less than 30mm. Seconds, each time the forging direct...

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PUM

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Abstract

The invention discloses an anti-crack manufacturing method for duplex stainless steel F53 forging forming. The anti-crack manufacturing method comprises the following steps of (1) putting a steel ingot into a heating furnace, charging the steel ingot into the furnace to avoid direct flame injection, heating the steel ingot along with the furnace to be less than 60 DEG C/h, and keeping the temperature for 4 hours when the temperature reaches 300-350 DEG C; (2) heating the steel ingot with the temperature of 300-350 DEG C to 1020-1050 DEG C at the speed of 100 DEG C/h, and keeping the temperature for 20 hours; (3) heating the steel ingot with the temperature of 1020-1050 DEG C to 1200 DEG C at the speed of 70-100 DEG C/h, and keeping the temperature for 20 hours; (4) taking out the steel ingot obtained in the step (3) and placing the steel ingot in a forging machine for forging; (5) if cracks appear on the outer surface in the forging and pressing process, immediately removing the cracksby gas cutting in a hot state; and (6) placing a blank forge piece forged to the size into the heating furnace to be continuously heated to 1070 DEG C, conducting solid solution after heat preservation is carried out for 3 h, and enabling the water temperature of solid solution to be larger than 40 DEG C. According to the anti-crack manufacturing method, the forging efficiency and quality are improved, product surface cracks are prevented, energy consumption is reduced, and the cost is reduced.

Description

technical field [0001] The invention relates to a production and processing method of stainless steel, in particular to a method for making anti-crack by forging and forming of duplex stainless steel F53. Background technique [0002] For duplex stainless steel F53 forging, corner cracks and cracks are prone to occur, and the quality is not good enough. If there are cracks on the outer surface during the forging process, the cracks need to be cleaned after the product cools down, and then reheated for forging. In this way, the efficiency is low and the energy consumption is high. Moreover, the forging efficiency is relatively low, and the energy consumption is relatively high. Contents of the invention [0003] The object of the present invention is to provide a method for making duplex stainless steel F53 forging and forming anti-cracks. By using the structure, cracking of products can be prevented, energy consumption can be reduced, and forging efficiency can be improv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21J5/00B21J1/06B21K29/00C21D8/00C21D1/78
CPCB21J1/06B21J5/008B21K29/00C21D1/78C21D8/005
Inventor 葛协东葛征坪李洪
Owner 江阴市劲松科技有限公司
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