Mineral high-strength wear-resistant material and preparation method thereof

A wear-resistant material and high-strength technology, applied in the field of metallurgy, can solve problems such as low wear resistance, insufficient strength and toughness, and poor hardenability, and achieve the effects of enhancing comprehensive mechanical properties, optimizing composition and content, and reducing hardness

Active Publication Date: 2019-07-16
YINGKOU SPECIAL STEEL FORGING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies in the above-mentioned existing materials, the present invention provides a high-strength wear-resistant material for mines and a preparation method thereof, adopting a reasonable alloying ratio and manufacturing process to effectively solve the existing materials, low wear resistance, Poor hardenability, insufficient strength and toughness, etc.

Method used

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  • Mineral high-strength wear-resistant material and preparation method thereof
  • Mineral high-strength wear-resistant material and preparation method thereof
  • Mineral high-strength wear-resistant material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] The composition and mass percentages of the new high-strength wear-resistant material for mining in this example are as follows: C is 0.31%; Si is 0.145%; Mn is 0.17%; Cr is 2.25%; Ni is 0.065%; Mo is 0.25% ; V is 0.18%; Nb is 0.036%; Al is 0.22%; P is 0.009%; S is 0.002%;

[0059] The technological process of the new mining high-strength wear-resistant material produced with the above-mentioned composition ratio is as follows:

[0060] (1) Electric furnace smelting: Carry out electric furnace smelting, refining (LF) and vacuum treatment (VD) according to the composition and mass percentage ingredients in the above examples, and cast into Φ360 electrode blanks and anneal in parallel.

[0061] (2) Electroslag remelting: The electrode blank is electroslag remelted, slagging time: 20min current 3500A, refining 30min current 7000A. Remelting voltage: 73V Current: 8000A~13000A. Feeding voltage: 61V current time 40min mold cooling time 50 minutes, electroslag steel ingot an...

Embodiment 2

[0096] The composition and mass percentages of the new high-strength wear-resistant material for mining in this example are as follows: C is 0.35%; Si is 0.13%; Mn is 0.20%; Cr is 1.10%; Ni is 0.33%; Mo is 0.65% ; V is 0.44%; Nb is 0.25%; Al is 0.4%; P is 0.008%; S is 0.001%;

[0097] The technological process of the new mining high-strength wear-resistant material produced with the above-mentioned composition ratio is as follows:

[0098] (1) Electric furnace smelting: Carry out electric furnace smelting and smelting temperature greater than 1500°C, refining (LF) and vacuum treatment (VD) according to the composition and mass percentage ingredients in the above examples, and cast into a Φ380 electrode blank and anneal in parallel.

[0099] (2) Electroslag remelting: The electrode blank is electroslag remelted, slagging time: 20min current 3500A, refining 30min current 7000A. Remelting voltage: 73V Current: 8000A~13000A. Feeding voltage: 61V current time 40min mold cooling t...

Embodiment 3

[0120] The composition and mass percentage of the new high-strength wear-resistant material for mining in this embodiment are as follows: C is 0.33%; Si is 0.24%; Mn is 0.08%; Cr is 2.05%; Ni is 0.12%; Mo is 0.90% ; V is 0.42%; Nb is 0.340%; Al is 0.30%; P is 0.008%; S is 0.002%;

[0121] The technological process of the new mining high-strength wear-resistant material produced with the above-mentioned composition ratio is as follows:

[0122] (1) Electric furnace smelting: Carry out electric furnace smelting and smelting temperature greater than 1500°C, refining (LF) and vacuum treatment (VD) according to the composition and mass percentage ingredients in the above examples, and cast into a Φ330 electrode blank and anneal in parallel.

[0123] (2) Electroslag remelting: The electrode blank is electroslag remelted, slagging time: 20min current 3500A, refining 30min current 7000A. Remelting voltage: 73V Current: 8000A~13000A. Feeding voltage: 61V current time 40min mold cooli...

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Abstract

The invention discloses a mineral high-strength wear-resistant material which is prepared from the following raw materials in percentage by weight: 0.30-0.50% of C, 0.10-0.65% of Si, less than or equal to 1.0% of Mn, 1.0-4.5% of Cr, 0.05-3% of Ni, 0.15-1.5% of Mo, 0.05-0.5% of V, 0.010-0.5% of Nb, 0.01-0.5% of Al, less than or equal to 0.025% of P, less than or equal to 0.015% of S and the balanceof Fe. A chain wheel manufactured from the mineral high-strength wear-resistant material is excellent in alloy element proportion, is pure in steel, is uniform in structure, has excellent comprehensive performance, is high in chain gear hardness, is uniform in hardness and is good in wear resistance; and meanwhile, a base body part has good impact toughness and strength. The defects that a commonChinese chain wheel is poor in comprehensive performance and is low in coal passing amount are solved. The mineral high-strength wear-resistant material greatly improves the coal passing amount of the chain wheel, reduces chain wheel use cost, and improves economic benefits.

Description

technical field [0001] The invention relates to the field of metallurgy, in particular to a high-strength wear-resistant material for mining and a preparation method thereof. Background technique [0002] The sprocket is an important part of the ore underground transportation in the coal machine and mine production. It must face the abrasive wear caused by the ore powder entering the sprocket, and at the same time it must withstand the continuous reciprocating impact load. Therefore, the material for making the sprocket needs to have sufficient wear resistance, toughness, and strength to ensure the continuous operation of the sprocket in a harsh working environment. [0003] The materials commonly used to make sprockets in my country are 42CrMo and 40CrNiMo, but these two materials have low wear resistance and poor hardenability, and the sprockets produced have poor overall performance and low coal passing capacity. If you want to ensure the toughness of the sprocket teeth ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/02C22C38/04C22C38/44C22C38/46C22C38/48C22C38/06C21D1/28C21D1/25C21D8/00C21D1/26
CPCC21D1/25C21D1/26C21D1/28C21D8/005C21D2211/002C21D2211/008C22C38/002C22C38/02C22C38/04C22C38/06C22C38/44C22C38/46C22C38/48
Inventor 潘美辰贾东洁潘烁
Owner YINGKOU SPECIAL STEEL FORGING
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