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Integral conical pick and method for producing the same

An integrated, conical technology, used in earth-moving drilling, cutting machinery, improving energy efficiency, etc., can solve the problems of reduced service life and low hardness, and achieve the effect of improving service life, high hardness and prolonging service life.

Inactive Publication Date: 2009-08-19
丽叶卫健国际商贸(无锡)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cemented carbide tooth tip is cast, and its Vickers hardness is only about 1300, which is relatively low.
Due to lower hardness, it also reduces its service life

Method used

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  • Integral conical pick and method for producing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Such as figure 1 As shown, the one-piece conical pick of the present invention includes a conical pick body, the conical pick body contains a tooth body 1 and a tooth tip 2, the tooth body 1 is cylindrical, and the tooth tip 2 is a cone The tooth body 1 and the tooth tip 2 are made of the same material, and one end of the tooth body 1 and the large end of the tooth tip 2 are integrally formed by casting. A wear-resistant layer 3 is formed on the surface of the tapered pick body.

[0026] One-piece conical pick production method of the present invention comprises the following steps successively:

[0027] First select carbon tool steel rod, the carbon tool steel rod is T9A high-quality carbon tool steel;

[0028] Then, precision forging

[0029] Forge carbon tool steel rods into conical pick blanks of required specifications. Among them, the initial forging temperature is 1000°C, and the final forging temperature is 700°C.

[0030] After that, spheroidizing annealin...

Embodiment 2

[0046] Such as figure 1 As shown, the one-piece conical pick of the present invention includes a conical pick body, the conical pick body contains a tooth body 1 and a tooth tip 2, the tooth 1 body is cylindrical, and the tooth tip 2 is a cone The tooth body 1 and the tooth tip 2 are made of the same material, and one end of the tooth body 1 and the large end of the tooth tip 2 are integrally formed by casting. A wear-resistant layer 3 is formed on the surface of the tapered pick body.

[0047] One-piece conical pick production method of the present invention comprises the following steps successively:

[0048] First select carbon tool steel rod, the carbon tool steel rod is T10A high-quality carbon tool steel;

[0049] Then, precision forging

[0050] Forge carbon tool steel rods into conical pick blanks of required specifications. Among them, the initial forging temperature is 1100°C, and the final forging temperature is 760°C.

[0051] After that, spheroidizing anneali...

Embodiment 3

[0067] Such as figure 1 As shown, the one-piece conical pick of the present invention includes a conical pick body, the conical pick body contains a tooth body 1 and a tooth tip 2, the tooth body 1 is cylindrical, and the tooth tip 2 is a cone The tooth body 1 and the tooth tip 2 are made of the same material, and one end of the tooth body 1 and the large end of the tooth tip 2 are integrally formed by casting. A wear-resistant layer 3 is formed on the surface of the tapered pick body.

[0068] One-piece conical pick production method of the present invention comprises the following steps successively:

[0069] First select carbon tool steel rod, the carbon tool steel rod is T11A high-quality carbon tool steel;

[0070] Then, precision forging

[0071] Forge carbon tool steel rods into conical pick blanks of required specifications. Among them, the initial forging temperature is 1160°C, and the final forging temperature is 820°C.

[0072] After that, spheroidizing anneali...

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Abstract

The invention relates to a one-piece conical cutting pick and a production method thereof, in particular to a conical cutting pick on a coal mining heading machine and a production method thereof. The conical cutting pick comprises a conical cutting pick body which includes a tooth body and a tooth top. The conical cutting pick is characterized in that the tooth body and the tooth top are of the same material and form a whole. The surface of the conical cutting pick body has a wear layer. The conical cutting pick is made by carbon tool steel bars through the steps of precision forging, spheroidizing annealing, machining, chemical processing, high frequency processing, quenching, underhardening and finishing, etc. The one-piece conical cutting pick is not easy to damage and has long service life.

Description

technical field [0001] The invention relates to a coal mining machine accessory. Specifically, it is a conical pick on a coal mining roadheader and a production method thereof. Background technique [0002] It is known in the coal mining machinery production industry that at present, the conical picks used on coal mining roadheaders are all traditional conical picks. This traditional conical pick is a split structure, that is, its tooth body and tooth tip are processed separately and then welded together. Its tooth body and tooth tips are made of ordinary steel and hard alloy respectively. Since the tooth body and the tooth tip are processed separately and then welded together, the head of the tooth body needs to be heated rapidly when brazing the carbide tooth tip. In the rapid heating process, it will cause cracks inside the cemented carbide tooth tip, reducing the strength of the cemented carbide tooth tip. And because in order to improve the strength, toughness and w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21C35/183B21J5/00C21D1/32C21D1/68C21D1/42C21D1/18
CPCY02P10/25
Inventor 杨振华陈安庆董晓春姚建新
Owner 丽叶卫健国际商贸(无锡)有限公司
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