Mo-containing high-chromium wearproof alloy material and preparation method thereof

A wear-resistant alloy and high-chromium technology, which is applied in the field of Mo-containing high-chromium wear-resistant alloy materials and their preparation, can solve problems such as affecting wear resistance, and achieve the effects of increasing service life, increasing hardness and improving wear resistance.

Active Publication Date: 2020-10-16
北京云创新材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The hammer head of the impact crusher is subject to the dual effects of impact and material impact, and the existing high-chromium cast iron materials are difficult to balance hardness and toughness at the same time, thus affecting the wear resistance under actual working conditions

Method used

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  • Mo-containing high-chromium wearproof alloy material and preparation method thereof
  • Mo-containing high-chromium wearproof alloy material and preparation method thereof
  • Mo-containing high-chromium wearproof alloy material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A high-chromium wear-resistant alloy material containing Mo, including the following components in weight percentage: molybdenum Mo: 1%, chromium Cr: 17%, carbon C: 3%, silicon Si: 0.5%, manganese Mn: 0.55%, phosphorus P: 0.55%, sulfur S: 0.55%, and the rest is Fe.

[0030] The preparation method of the Mo-containing high-chromium wear-resistant alloy material includes the following steps.

[0031] S1: According to the component content and the raw materials used are high-carbon ferrochrome, low-carbon ferrochrome, ferromolybdenum, ferrosilicon, scrap steel, etc., the raw materials used are determined to be high-carbon ferrochrome, low-carbon ferrochrome, ferromolybdenum, Ratio of ferrosilicon, scrap steel, etc., and preparation of charge;

[0032] S2: The raw materials used are high-carbon ferrochrome, low-carbon ferrochrome, ferromolybdenum, ferrosilicon, scrap steel, etc., which are put into an intermediate frequency induction furnace for smelting, and the temperatu...

Embodiment 2

[0036] A high-chromium wear-resistant alloy material containing Mo, including the following components in weight percentage: molybdenum Mo: 1%, chromium Cr: 17%, carbon C: 3%, silicon Si: 0.5%, manganese Mn: 0.55%, phosphorus P: 0.55%, sulfur S: 0.55%, and the rest is Fe.

[0037] The preparation method of the Mo-containing high-chromium wear-resistant alloy material refers to Example 1, the difference is that the tempering treatment in S4 is to raise the temperature from room temperature to 450°C at a certain speed, then keep it warm for 1.5h, take out the casting blank, and air cool to room temperature.

Embodiment 3

[0039] A high-chromium wear-resistant alloy material containing Mo, including the following components in weight percentage: molybdenum Mo: 3%, chromium Cr: 17%, carbon C: 3%, silicon Si: 0.5%, manganese Mn: 0.55%, phosphorus P: 0.55%, sulfur S: 0.55%, and the rest is Fe.

[0040] The preparation method of the Mo-containing high-chromium wear-resistant alloy material is the same as that in Example 1.

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Abstract

The invention relates to a Mo-containing high-chromium wearproof alloy material and a preparation method thereof. The Mo-containing high-chromium wearproof alloy material comprises the following compositions in percentage by weight: 0-5% of Mo, 10-29% of Cr, 2.5-3.5% of C, 0.30-0.80% of Si, 0.40-0.90% of Mn, equal to or less than 0.1% of P, equal to or less than 0.1% of S and the balance of Fe. Through the synergistic effect of all compositions and a specific production technology, carbide in the metallographic structure mainly comprises M7C3 type; the matrix structure is combination of a proper amount of tempered martensite and residual austenite, so that formation of casting-state pearlite is avoided, precipitation of eutectic crystal and secondary carbide is realized to finish matrix hardening, and the material hardness is improved while keeping the toughness to further improve the wear resistance of alloy material; and when the Mo-containing high-chromium wearproof alloy material is applied to mechanical wearproof components including the hammerhead of a crusher and the like, the service life is greatly prolonged.

Description

technical field [0001] The invention relates to the technical field of alloy materials, in particular to a Mo-containing high-chromium wear-resistant alloy material and a preparation method thereof. Background technique [0002] Wear and tear is one of the main reasons for the failure of metal parts, causing a lot of material and energy waste. With the rapid development of industries such as metallurgy, mining, building materials and electric power, the annual consumption of wear-resistant alloy materials in my country is increasing. Taking high-chromium cast iron materials in cast iron as an example, the annual consumption is at least more than one hundred In order to improve the durability, reliability and precision of mechanical equipment, people put forward higher requirements for the wear resistance of wear-resistant alloy materials. [0003] High-chromium cast iron alloy material is recognized as an excellent wear-resistant material against erosion and wear at home and...

Claims

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Application Information

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IPC IPC(8): C22C37/10C22C37/06C22C33/08C21D1/18C21D1/26
CPCC21D1/18C21D1/26C21D2211/001C21D2211/008C22C33/08C22C37/06C22C37/10Y02P10/20
Inventor 韩永萍
Owner 北京云创新材科技有限公司
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