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A kind of manufacturing method of high-speed steel composite wear-resistant tamping pick

A manufacturing method and technology of high-speed steel, applied in the field of parts preparation, can solve the problems of complex process, difficult complete penetration of molten metal, and wear, etc., to shorten the deposition time, improve the density of the coating and the uniformity of the structure, and improve the spray deposition. The effect of efficiency

Active Publication Date: 2020-09-04
江西稀坤源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Chinese patent CN103194720A discloses a wear-resistant tamping pick, which improves wear resistance mainly through plasma surface treatment, but the wear-resistant layer obtained by this invention is very thin and will be completely worn soon. -After 8 kilometers, the pick blade is severely worn, and the production efficiency is low and the cost is high
The process is complex and difficult to control, the cost is high, and the molten metal is difficult to penetrate completely, resulting in more pores, which greatly reduces its wear resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A high-speed steel composite wear-resistant tamping pick, including a pick body and a pick palm integrated with the pick body, the base material of the pick body and the pick palm is made of medium carbon alloy steel with both strength and toughness, and is directly cast Or die forging one-time forming method to obtain a tamping pick, the palm part of the pick then utilizes spray forming high-speed steel material with high wear resistance and toughness, and the manufacturing method of its high-speed steel composite wear-resistant tamping pick comprises the following steps:

[0023] (1) Prepare the matrix of the composite tamping pick: select a high-strength alloy steel bar with the brand name of 42CrMo, and then form it by die forging at one time, and perform subsequent heat treatment to control the structure and properties. The initial forging temperature of the die forging is 1160 ℃, one-time die forging, air cooling after forging, and follow-up heat treatment, the ste...

Embodiment 2

[0028] A kind of manufacturing method of high-speed steel composite wear-resisting stamping pick, the difference with embodiment 1 is, the matrix of described step 1 can choose the medium-carbon alloy steel of a kind of brand, carry out smelting and casting in vacuum furnace, directly in casting Formed in one mold.

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Abstract

The invention belongs to the technical field of component preparation, and particularly discloses a manufacturing method of a high-speed steel composite wear-resistant tamping pickaxe. The method comprises the following steps that (1) a substrate of the composite tamping pickaxe is prepared; (2) a sedimentary high-speed steel wear-resistant layer is sprayed on the surface of the pickaxe; and (3) the follow-up heat treatment of the high-speed steel wear-resistant layer of the pickaxe is conducted. The manufacturing method is simple in process and low in cost, and the prepared tamping pickaxe ishigh in wear resistance and long in service life.

Description

technical field [0001] The invention belongs to the technical field of parts preparation, in particular to a method for manufacturing a high-speed steel composite wear-resistant tamping pick. Background technique [0002] Railway road maintenance machinery plays an important role in the construction and maintenance of the line. The tamping car is mainly used to tamp the gravel on the railway bed, and the tamping pick is the most critical part of the tamping car. The slag is subjected to impact tamping. Because the tamping pick is not only frequently subjected to the impact load, but also bears abrasive wear and impact wear, the tamping pick has a short service life and needs to be replaced frequently. At present, most of the tamping picks used in domestic railway engineering tamping vehicles are forged with medium carbon steel, and the composite tamping picks are inlaid with hard alloy sheets. Among them, the imported ones have a long service life but are expensive; while d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C4/123C23C4/08C23C4/18C21D1/18C21D1/28C21D9/00
CPCC21D1/18C21D1/28C21D9/0068C23C4/08C23C4/123C23C4/18Y02P10/20
Inventor 周强张金祥杨树忠杨新华李建中谢世勇
Owner 江西稀坤源科技有限公司
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