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Casting method of abrasion-resistant steel

A wear-resistant steel and casting technology, applied in the field of wear-resistant metal materials, can solve the problems of difficult smelting and high production cost, and achieve the effects of low production cost, simple casting method and reasonable chemical composition

Inactive Publication Date: 2013-04-24
QINGDAO SANHESHAN CASTING GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, high-manganese steel is usually used to produce these wear-resistant parts. Although high-manganese steel has strong impact and wear resistance, it is difficult to smelt and requires high-temperature water toughening treatment, resulting in high production costs.

Method used

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Embodiment

[0013] According to the casting method of wear-resistant steel in this embodiment, the wear-resistant steel produced has the characteristics of high surface hardness and high material strengthening rate. The components of the chemical composition of wear-resistant steel and the mass percentages of each component are: C 0.85-0.95, Mn8 .5-9.5, Si 0.5-0.8, S≤0.03, P≤0.07, Cr 0.8-1.2, RE-Mg0.3-0.5, and the rest are iron. The smelting is carried out in a 500Kg medium-frequency induction furnace with a neutral lining. During smelting, scrap steel and ferromanganese are first melted, and then ferrosilicon is added for precipitation and deoxidation. Then take a sample and do a pre-furnace test. According to the test results, adjust the chemical composition. When the smelting reaches 1500°C, add a deoxidizer to deoxidize. The cast castings are heat treated, put into the furnace at room temperature, heated to 600°C for 1 hour, then heated to 950°C for 2 hours, and then water-cooled to o...

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Abstract

The invention discloses a casting method of abrasion-resistant steel, wherein the abrasion-resistant steel comprises the following chemical components according to percentages by weight: 0.85-0.95% of C, 8.5-9.5% of Mn, 0.5-0.8% of Si, smaller than or equal to 0.03% of S, smaller than or equal to 0.07% of P, 0.8-1.2% of Cr, 0.3-0.5% of RE-Mg, and the balance of Fe. The casting method comprises the following steps: selecting an intermediate frequency furnace for smelting; when smelting at the temperature of 1500-1550 DEG C, adding a deoxidizing agent for deoxidation; then powering off and discharging; carrying out casting forming at the temperature of 1430-1460 DEG C; carrying out heat treatment on a cast after casting forming; charging at a normal temperature; heating till 600 DEG C and preserving the temperature for 1h; then raising the temperature till 940-960 DEG C and preserving the temperature for 1-3h; then cooling with water so as to obtain the abrasion-resistant steel. The abrasion-resistant steel is low in production cost and long in service life; and the service life of the abrasion-resistant steel is three times of that of ordinary 16Mn steel plate, and is equivalent to that of high manganese steel.

Description

[0001] technical field [0002] The invention belongs to the technical field of wear-resistant metal materials, and in particular relates to a component of wear-resistant medium manganese steel and a casting method thereof. [0003] Background technique [0004] In metallurgy, mining, electric power, cement and other industries, working parts such as electric shovel teeth, shovel blades, crusher tooth plates, semi-autogenous mill liners, and conveyor scrapers in construction machinery and mining machinery need to withstand high loads. Impact loads, so the steel used to make these parts needs to have sufficient strength, toughness and wear resistance. At present, high-manganese steel is usually used to produce these wear-resistant parts. Although high-manganese steel has strong impact and wear resistance, it is difficult to smelt and requires high-temperature water toughening treatment, resulting in high production costs. [0005] Contents of the invention [0006] In or...

Claims

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Application Information

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IPC IPC(8): C22C38/38
Inventor 李宁波
Owner QINGDAO SANHESHAN CASTING GROUP
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