A method for forming rounded square steel forged by a precision forging machine

A forming method and forging forming technology, which is applied in the field of steel forging, can solve the problems that precision forging machines cannot forge rounded square steel blanks, etc., and achieve the effects of improving equipment production efficiency, good surface quality, and avoiding folding defects

Active Publication Date: 2022-02-22
建龙北满特殊钢有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem that the precision forging machine cannot forge the rounded square steel billet, the invention provides a method for forming the rounded square steel forged by the precision forging machine

Method used

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  • A method for forming rounded square steel forged by a precision forging machine

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Experimental program
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Effect test

Embodiment 1

[0025] A forming method for forging rounded square steel with a precision forging machine. A 16MN horizontal precision forging machine is used. The programming software for automatic control is BarForge. The model of the round hammer is R120.

[0026] Put the continuous casting billet into the gas heating furnace and heat it. The heating temperature is 1190-1210°C, and the holding time is 6-8h. The heating process in this embodiment increases the heating temperature by 20°C and extends the holding time by 2 hours compared with the normal billet, mainly to homogenize the billet at high temperature, reduce composition segregation, and prepare for metallurgical defects in the center of forging and welding.

[0027] In this embodiment, the precision forging machine adopts the forging deformation mode: circle→circle→circle→square, the total forging ratio from billet to finished square steel billet with round corners is 4.7, and the size of finished square steel is calculated accor...

Embodiment 2

[0033] A forming method for forging rounded square steel with a precision forging machine. A 16MN horizontal precision forging machine is used. The programming software for automatic control is BarForge. The model of the round hammer is R120.

[0034] The continuous casting billet is put into a gas heating furnace for heating, the heating temperature is 1190-1210°C, and the holding time is 6-8h.

[0035] In this embodiment, the precision forging machine adopts the forging deformation mode: circle → circle → circle → circle → square, the total forging ratio from the billet to the finished square steel billet with round corners is 4.7, and the size of the finished square steel is A=(0.81~0.82)D For calculation, A is the side length of the rounded square steel, and D is the diameter of the circle before the finished product.

[0036] In this embodiment, the precision forging machine uses a round hammer head for forging forming, and the forging frequency of the round hammer head...

Embodiment 3

[0047] A forming method for forging rounded square steel with a precision forging machine. A 16MN horizontal precision forging machine is used. The programming software for automatic control is BarForge. The model of the round hammer is R120.

[0048] Put the continuous casting billet into the gas heating furnace and heat it. The heating temperature is 1190-1210°C, and the holding time is 6-8h.

[0049] In this embodiment, the precision forging machine adopts the forging deformation method: circle → circle → circle → circle → square, the total forging ratio from the billet to the finished square steel billet with round corners is 4.7, and the size of the finished square steel is A=(0.81~0.82)D For calculation, A is the side length of the rounded square steel, and D is the diameter of the circle before the finished product.

[0050] In this embodiment, the precision forging machine uses a round hammer head for forging forming, and the forging frequency of the round hammer hea...

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Abstract

The invention relates to a method for forming rounded square steel forged by a precision forging machine, which belongs to the technical field of steel forging. In order to solve the problem that the precision forging machine cannot forge the rounded square steel billet, the invention provides a method for forming the rounded square steel forged by the precision forging machine. The method uses a round hammer head for forging and forming, and a total of 4 passes are designed. The first ~The 3rd pass is dominated by circular deformation, and the 4th pass billet is deformed from a round billet to a finished round corner square steel billet. The invention optimizes the process parameters of the forging program of the precision forging machine to forge the finished product of rounded square steel billet with high quality, high dimensional accuracy, compact and uniform structure, and good surface quality, which can be used for thermal processing such as forging and rolling, which can avoid The product has folding defects and improves the product qualification rate. The invention solves the problem that the square hammer head of the precision forging machine cannot produce the rounded square steel billet, and uses the round hammer head to forge the rounded square steel billet, which not only meets the product requirements, but also saves the working time for replacing the hammer head, and improves the production efficiency of the equipment , to facilitate flexible organization of production.

Description

technical field [0001] The invention belongs to the technical field of steel forging, and in particular relates to a method for forming rounded square steel forged by a precision forging machine. Background technique [0002] The right-angle square steel billet with a 90° edge angle is very suitable for cutting and processing, but when it is used for hot pressure processing, such as rolling and forging billets, the 90° corner of the right-angle square steel billet is prone to folding defects, resulting in product scrapping. Product demand cannot be met. At present, the blanks used for reforming forging and billet rolling in the market require rounded corners of R10-R30mm at the edges and corners of square steel blanks. [0003] There are mainly two production methods for rounded square steel blanks, forging and rolling. The square steel produced by rolling has rounded corners in width and height, and the size is controlled precisely. However, due to the small amount of def...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21J1/06B21J13/06B21K27/00B21K29/00
CPCB21J1/06B21J13/06B21K27/00B21K29/00
Inventor 曹立军姚凤祥雷玉臣刘鹏宇牛震蒋伟斌赵艳荣杨云志唐刚翟书研
Owner 建龙北满特殊钢有限责任公司
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