Repairing method of master cylinder plunger piston of radial forging machine

A technology of radial forging and repairing method is applied in the repairing field of the main cylinder plunger of radial forging machine, which can solve the problems of increasing production cost, long production cycle, wear and the like, so as to reduce the repairing cycle, reduce the maintenance cost, and ensure the normal operation. running effect
CN101758362AInactive Publication Date: 2010-06-30SHANGHAI BAOSTEEL IND TECHNOLOGICAL SERVICE
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI BAOSTEEL IND TECHNOLOGICAL SERVICE
Publication Date
2010-06-30
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a repairing method of a master cylinder plunger piston of a radial forging machine; in the invention, two false shafts are manufactured and are connected to two ends of the master cylinder plunger piston as the standard for processing the master cylinder plunger piston and a thin-wall steel sleeve; the thin-wall steel sleeve adopts a 38CrMoAl forging piece, and heat treatment tempering and multichannel heat treatment stress elimination are carried out to the thin-wall steel sleeve, and nitriding treatment is carried out to the surface of the thin-wall steel sleeve to improve the hardness, after cylinder type fixing glue is coated on the surface of the master cylinder plunger piston, the thin-wall steel sleeve is embedded and sheathed on the master cylinder plunger piston after heat treatment is carried out, and the thin-wall steel sleeve is grounded into design size; by adopting the method, the damaged master cylinder plunger piston can be repaired, and repairing can be carried out repeatedly, the effectiveness of the master cylinder plunger piston is restored, the maintaining cost and repairing period can be greatly reduced and the normal operation of the production equipment can be ensured.
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Description

technical field

[0001] The invention relates to a repair method for a plunger of a radial forging machine master cylinder. Background technique

[0002] The plunger of the main cylinder of the radial forging machine is connected with the hammer head to forge high-temperature steel ingots. Due to the direct contact with the billet, although a double-layer protective cover has been made in the design, it is easy to enter the inner protective cover due to excessive iron oxide scales. The high-frequency action of the upper plunger causes strain on the plunger surface and the guide copper ring. Since the plunger and the guide copper ring are sealed by Stoker, if there is a slight strain, it will cause the seal to fail. In addition, the high temperature and high pressure working conditions will lead to oil leakage in severe cases. Usually, after the above failures, the production can only be maintained by replacing the seals and grinding the surface of the plunger and copper guid...

Claims

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