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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

Inactive Publication Date: 2010-06-30
SHANGHAI BAOSTEEL IND TECHNOLOGICAL SERVICE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, if the outer circle of the main cylinder plunger of radial forging machine is severely strained or worn, the performance can only be restored by replacing the main cylinder plunger, while the price of new spare parts for the main cylinder plunger accounts for a relatively high The production process of the plunger is relatively complicated and the production cycle is long, which seriously affects the normal operation of the equipment and increases the production cost

Method used

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  • Repairing method of master cylinder plunger piston of radial forging machine
  • Repairing method of master cylinder plunger piston of radial forging machine

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Embodiment Construction

[0018] like figure 1 As shown, the repair method of the radial forging machine master cylinder plunger of the present invention comprises the following steps:

[0019] Step 1. Make two dummy shafts 1 according to the outer diameter of the plunger 6 of the master cylinder. One end of the dummy shaft 1 is a disc 2 with several through holes in the circumferential direction. The two dummy shafts 1 pass through the through holes of the disc 2 to Bolts 3 are concentrically connected to both ends of the master cylinder plunger 6;

[0020] Step 2: Making three sections of thin-walled steel sleeve 4, the thin-walled steel sleeve 4 is made of 38CrMoAl forging, after rough turning, the forging is subjected to ultrasonic flaw detection, Class II inspection, heat treatment, quenching and tempering and three stabilization treatments,

[0021] The first stabilization treatment process is: heating up to 80°C per hour, raising the temperature to 300°C, holding for 1 hour, then raising the te...

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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.

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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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P6/02
Inventor 徐雪飞刘炳荣何永波任克文
Owner SHANGHAI BAOSTEEL IND TECHNOLOGICAL SERVICE
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