Machining process for disc spring used for forging press

A technology for forging presses and disc springs, used in manufacturing tools, furnaces, heat treatment equipment, etc., can solve the problems of unreasonable streamline distribution, short service life, reduced production efficiency, etc., to improve structural strength and fatigue resistance. , The effect of reducing downtime for maintenance and improving production efficiency

Inactive Publication Date: 2015-03-25
JIANGYIN JIB WD PRECISION
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  • Abstract
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Problems solved by technology

However, in the processing technology of the disc spring without forging, there are internal defects such as unreasonable streamline distribution and insufficient fine structure, and the disc spring has a large amount of deformation and low fatigue strength during processing and forming, resulting in disc springs. The quality of disc springs is

Method used

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Embodiment Construction

[0011] Specific embodiments of the present invention will be further described in detail below.

[0012] 60Si2MnA round steel is used for blanking, upsetting and elongating forging for 6 times, after annealing, the outer circular surface is turned and the inner hole is drilled, and the turning is cut into pieces. After grinding the two ends of each piece, the burrs are removed, and the cold forming mold is cold-pressed. For press forming, the cone angle of the cold press forming mold should be 30′~1° larger than the cone angle of the disc spring; quenching is carried out after forming, and the quenching process is carried out in a box furnace. Before entering the furnace, it is necessary to coat the surface of the disc spring evenly Brush anti-oxidation paint, quenching temperature is 850~890°C, time is 8~12 minutes, and oil quenching method is adopted; tempering is carried out after quenching, disc springs are stacked one by one and clamped with a mold, the cone angle of the m...

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Abstract

The invention relates to a machining process for a disc spring used for a forging press. The machining process is characterized in that round steel is blanked, upsetting operation and drawing-out forging operation are conducted at least four times, after the steel is annealed, the outer round face is turned, holes are drilled, the steel is turned and sliced, the two end faces of each piece are ground and deburred, and cold pressing forming is conducted on each piece on a cold pressing forming die; each piece is quenched, each piece is tempered in a die clamping state and air-cooled to the normal temperature after being tempered, and a product is checked and put in storage after the die is detached. According to the machining process, the process procedure is reasonable, the structural strength and the fatigue resistance of the disc spring are improved, the service life of the disc spring is prolonged, the halt repair time of the forging press is shortened, production efficiency is improved, the workload of workers is reduced, and the labor intensity of the workers is lowered.

Description

technical field [0001] The invention relates to a processing technology of a spring, in particular to a processing technology of a disc spring used in a forging press. Background technique [0002] Most forging presses use a disc spring device to unload the forgings. This disc spring is usually made of spring steel plate or processed by annealing 60Si2MnA round steel. The process is through blanking→annealing→outer diameter surface →Drilling the inner hole→Slicing→Grinding both end faces→Deburring→Cold forming→Quenching→Tempering. Due to the simple structure of this type of disc spring, the processing technology is simple and the manufacturing cost is low. However, in the processing technology of the disc spring without forging, there are internal defects such as unreasonable streamline distribution and insufficient fine structure, and the disc spring has a large amount of deformation and low fatigue strength during processing and forming, resulting in disc springs. The qu...

Claims

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Application Information

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IPC IPC(8): B23P15/00C21D9/02C21D1/18
CPCB23P15/00
Inventor 程万丁沈强
Owner JIANGYIN JIB WD PRECISION
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