Manufacturing method of track pin sleeve of bulldozer

A manufacturing method and technology for track pins, which are applied in the directions of manufacturing tools, heat treatment process control, heat treatment equipment, etc., can solve the problems of high cost and high price of pin sleeves, and achieve improved structural performance, low production cost, and improved grain size grade. Effect

Inactive Publication Date: 2011-12-14
SHANTUI CONSTR MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method for making a bulldozer track pin sleeve, which can solve the disadvantages of high cost of the pin sleeve due to the high price of raw material steel pipes in the prior art, improve steel utilization, processing efficiency, improve structural performance, and prolong its use. life

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] The track pin sleeve of the bulldozer is realized by the following steps:

[0015] (1) blanking, intercepting bar;

[0016] (2) Upsetting, reverse extrusion, punching, heating the bar to a temperature of 900-1000°C, free forging and upsetting, and then reverse extrusion of the billet in the extrusion die to form a drum in the center of the billet Shaped inner hole, and then punch out one end of the inner hole and the skin in the punching die to form a steel pipe;

[0017] (3) Annealing, cooling at room temperature;

[0018] (4) Shot blasting treatment;

[0019] (5) For the shape of the rough car, first locate the inner hole of the rough car with the outer circle, and then use the inner hole to locate the outer circle and end face of the rough car;

[0020] (6) Overall quenching and tempering;

[0021] (7) Carburizing;

[0022] (8) Finishing the outer circle and end face of the car.

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PUM

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Abstract

A manufacturing method of a bulldozer crawler pin bushing is realized by adopting the following steps: (1) cutting material, intercepting a bar; (2) upsetting, reverse extrusion and punching; (3) annealing and cooling at room temperature; (4) Shot blasting; (5) Rough turning shape; (6) Overall quenching and tempering; (7) Carburizing; (8) Finish turning the outer circle and end face. The invention has high utilization rate of raw materials and low production cost. Since the raw material is heated and annealed again, the internal stress of the raw material is eliminated, and the grain size grade of the pin sleeve is improved, so the invention can improve the structural performance of the pin sleeve and prolong the service life.

Description

technical field [0001] The invention relates to a manufacturing method of a pin sleeve, in particular to a manufacturing method of a track pin sleeve of a bulldozer. Background technique [0002] The current method of producing track pin bushings for bulldozers is to directly rough turn steel pipes, quench and temper the outer circle, carburize, and finish turn the outer circle and end face. Due to the high price of steel pipes, the production cost of track pin bushings is relatively high, and the track assembly The overall cost is higher. Contents of the invention [0003] The purpose of the present invention is to provide a method for making a bulldozer track pin sleeve, which can solve the disadvantages of high cost of the pin sleeve due to the high price of raw material steel pipes in the prior art, improve steel utilization, processing efficiency, improve structural performance, and prolong its use. life. [0004] The object of the present invention is to adopt the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00C21D1/26C21D1/34C21D11/00
Inventor 朱正象赵伟史作志黄静华
Owner SHANTUI CONSTR MASCH CO LTD
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