Pick shoe forging process

A technology of tooth shoes and picks, which is applied in the direction of manufacturing tools, metal processing equipment, forging/pressing/hammer devices, etc., can solve the problems of long forming process of pick and tooth shoes, low product qualification rate, and high material consumption, etc. Achieve the effects of reducing the unit extrusion force of the mold, high forming precision, and reducing metal flow resistance

Active Publication Date: 2012-04-04
江苏威鹰机械有限公司
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a forging process of the pick shoe, which solves the technical problems of the

Method used

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Examples

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Example Embodiment

[0025] The present invention will be further explained below in conjunction with the drawings and embodiments.

[0026] See figure 1 , figure 2 with image 3 A pick shoe forging process includes the following steps:

[0027] ①Unloading and intercepting bars;

[0028] ②Making blanks, peeling off the outer circle of the car, and taking the length;

[0029] ③ Shot blasting coating, after shot blasting, the graphite coating prevents oxidation and decarburization;

[0030] ④Upsetting and punching, heating the bar to a temperature of 850℃, first upsetting in the upsetting die, and then punching in the concave die to form a hollow cylinder blank;

[0031] ⑤ Shot blasting coating, graphite coating after shot blasting to prevent oxidation and decarburization;

[0032] ⑥ Heating and forward extrusion, the billet is heated to a temperature of 850°C, and the hollow cylinder blank is placed in a positive extrusion die for forward extrusion to form two hollow cylinders of different sizes and diameter...

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Abstract

The invention discloses a pick shoe forging process, which comprises the following steps of: (1) laying off; (2) blanking; (3) performing ball blasting and coating; (4) upsetting and punching; (5) performing ball blasting and coating; (6) heating and performing positive extrusion; (7) upsetting and thermally extruding a large-diameter hollow cylinder and a transition section between two hollow cylinders with different sizes and diameters by using a conical upsetting die to form a large end of a pick shoe; (8) annealing; and (9) finishing and determining length till a product reaches the drawing requirement. In the process, a small cylindrical end of the pick shoe is formed in advance, a large end is preformed, and the preformed large end is used for forging and shaping a large end of the pick shoe, so that the metal flow resistance is reduced, the unit extruding force borne by the die is reduced, the shaping accuracy is high, the material utilization ratio is over 90 percent, the processing process flow is shortened, the production efficiency is high, and the overall product quality is enhanced remarkably.

Description

technical field [0001] The invention relates to the field of mining machinery, in particular to a forging process for a pick shoe for a shearer in the coal industry. Background technique [0002] The pick tooth shoe is used in mining machinery, especially the pick tooth shoe for coal mines. It is a consumable part widely used in equipment such as coal mining machines and roadheaders in the coal industry. Picks and tooth shoes are easily damaged, which increases the number of times for shearers, roadheaders and other equipment to replace the pick tooth shoes, which wastes time and low work efficiency. At the same time, it also increases mining costs. The disadvantages of the cutting process of pick and tooth shoes are long forming process, high material consumption, low product qualification rate and poor forming efficiency. At present, manufacturers at home and abroad are adopting the technology of inner cavity precise forging to form blanks to form hollow cylinders with la...

Claims

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Application Information

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IPC IPC(8): B23P15/28B21C25/02B21J13/02
Inventor 万永福
Owner 江苏威鹰机械有限公司
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