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Casting material for guiding slipper of shearer and preparation method thereof

A technology for guiding sliding shoes and shearers, which is applied in the direction of manufacturing tools, heat treatment equipment, heat treatment process control, etc., can solve problems such as secondary defects, poor wear resistance of sliding shoes, economic losses, etc., and achieve heat treatment defects and stable quality and enhance reliable effects

Active Publication Date: 2022-02-08
郑州煤机智能工作面科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, some coal machinery companies discard as many as hundreds of guide shoes every year due to quenching cracks, resulting in large economic losses.
At the same time, some coal machinery companies use welded wear-resistant plates instead of induction hardening, resulting in poor wear resistance of guide shoes, complicated operation, secondary defects, and poor stability

Method used

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  • Casting material for guiding slipper of shearer and preparation method thereof
  • Casting material for guiding slipper of shearer and preparation method thereof
  • Casting material for guiding slipper of shearer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] A coal shearer guide shoe casting material, comprising the following formula components by weight percentage:

[0052] C0.35%, Mn0.45%, Si0.25%, P0.015%, S0.02%, Cr0.9%, Mo0.25%, Ni1.3%, Al0.02%, Cu0.015%, V0.08%, the balance is Fe;

[0053] The carbon equivalent is CE, and CE=C+Mn / 6+(Cr+Mo+V) / 5+(Ni+Cu) / 15≤0.91%.

[0054] The preparation method of described a kind of shearer guiding shoe casting material is as follows:

[0055] S1. Smelting:

[0056] According to the formula composition and carbon equivalent of the casting material, the formula raw materials are put into the smelting furnace, and smelted by electric arc furnace or converter smelting, and LF refining outside the furnace to obtain molten steel.

[0057] S2. Casting:

[0058] Make moulds, cast, cast, obtain castings, conduct non-destructive testing on castings refer to the requirements in "JB / T5000.14-2007 General Technical Conditions for Heavy Machinery Non-destructive Testing of Steel Castings", non-...

Embodiment 2

[0075] A coal shearer guide shoe casting material, comprising the following formula components by weight percentage:

[0076] C0.4%, Mn0.55%, Si0.42%, P0.03%, S0.02%, Cr1.2%, Mo0.3%, Ni1.55%, Al0.04%, Cu0.2%, V0.1%, the balance is Fe.

[0077] The preparation method of described a kind of shearer guiding shoe casting material is as follows:

[0078] S1. Smelting:

[0079] According to the formula composition and carbon equivalent of the casting material, the formula raw materials are put into the smelting furnace, and smelted by electric arc furnace or converter smelting, and LF refining outside the furnace to obtain molten steel.

[0080] S2. Casting:

[0081] Make moulds, cast, cast, obtain castings, conduct non-destructive testing on castings refer to the requirements in "JB / T5000.14-2007 General Technical Conditions for Heavy Machinery Non-destructive Testing of Steel Castings", non-destructive testing methods and acceptance criteria for castings (including UT, PT , MT...

Embodiment 3

[0098] A coal shearer guide shoe casting material, comprising the following formula components by weight percentage:

[0099] C0.45%, Mn0.7%, Si0.6%, P0.03%, S0.03%, Cr1.4%, Mo0.35%, Ni1.8%, Al0.04%, Cu0.25%, V0.1%, the balance is Fe;

[0100] The carbon equivalent is CE, and CE=C+Mn / 6+(Cr+Mo+V) / 5+(Ni+Cu) / 15≤0.91%.

[0101] The preparation method of described a kind of shearer guiding shoe casting material is as follows:

[0102] S1. Smelting:

[0103] According to the formula composition and carbon equivalent of the casting material, the formula raw materials are put into the smelting furnace, and smelted by electric arc furnace or converter smelting, and LF refining outside the furnace to obtain molten steel.

[0104] S2. Casting:

[0105] Make moulds, cast, cast, obtain castings, conduct non-destructive testing on castings refer to the requirements in "JB / T5000.14-2007 General Technical Conditions for Heavy Machinery Non-destructive Testing of Steel Castings", non-destr...

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Abstract

The invention discloses a casting material for a shearer guide sliding shoe and a preparation method thereof. The casting material comprises the following formula components in weight percent: C0.35-0.45%, Mn0.45-0.7%, Si0.25-0.6% , P≤0.03%, S≤0.03%, Cr0.9‑1.4%, Mo0.25‑0.35%, Ni1.3‑1.8%, Al≤0.04%, Cu≤0.25%, V≤0.1%, the balance is Fe, the present invention performs non-destructive flaw detection on castings, improves the quality of casting materials, and lays a good foundation for the stability of subsequent induction hardening quality. Avoid the possibility of heat treatment quenching cracks due to structural reasons. In addition, by optimizing the structure of the quenching inductor and quenching tooling, create the best possible conditions for the induction hardening process of the guide shoe.

Description

technical field [0001] The invention relates to the technical field of fully mechanized mining equipment, in particular to a casting material and a preparation method of a shearer guide sliding shoe. Background technique [0002] The guide shoe is one of the main parts of the shearer, and its quality stability directly determines the comprehensive quality of the shearer. Among them, the guide groove of the guide shoe bears a large bending load with the ups and downs of the coal mining face and the left and right bending of the chute, and the position and direction of the load are uncertain. At the same time, the operating conditions of the coal mining face are extremely harsh, and coal dust will be used as an abrasive to increase wear. In addition, as the shearer travels, the guide surface of the guide shoe will have great friction with the chute, so that the guide surface is severely worn. [0003] At present, the hardening process of the guide surface of the guide shoe ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/04C22C38/02C22C38/06C22C38/44C22C38/42C22C38/46C21D1/28C21D1/18C21D1/10C21D11/00
CPCC22C38/04C22C38/02C22C38/06C22C38/44C22C38/42C22C38/46C21D1/28C21D1/18C21D1/10C21D11/00C21D2261/00Y02P10/25
Inventor 陈杰华张文琦刘国强魏靖奇高宇邵新波左丽萍段善龙王聪
Owner 郑州煤机智能工作面科技有限公司
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