High-chromium alloy cast ball and casting method thereof

A high-chromium alloy, cast ball technology, applied in the field of wear-resistant materials, can solve the problems affecting safe and stable production, energy and resource waste, parts consumption, etc., to improve the shape and distribution of graphite, refine the matrix structure, use long life effect

Inactive Publication Date: 2019-12-03
马鞍山常裕机械设备股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Wear and tear is one of the causes of component consumption and damage, and is an important factor that causes double waste of energy and resources and affects safe and stable production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A high chromium alloy casting ball, the components and their weight percentages in the high chromium alloy casting ball are C 2%, Cr 17%, Cu 0.9%, Mn 0.5%, Mo 0.6%, V 0.03%, Y 0.2% , B 1%, Nb 0.006%, Ta 0.005%, P<0.02%, S<0.01%, and the balance is Fe.

[0029] The casting method of the above-mentioned high chromium alloy casting ball comprises the following steps:

[0030] 1) Raw material smelting: Add the calculated raw materials in proportion to high-frequency induction furnace for high-temperature smelting. The melting temperature is 1480°C. After the furnace material is completely melted, add slag remover to remove slag, and add 0.05% aluminum for deoxidation. Out of the furnace, the temperature of the furnace is 1580°C, and the inoculant is added along with the flow during the process of the furnace out. The mass percentage of each element in the inoculant is Si65%, Ba 8%, Ca 1.5%, Sr 5%, Re 0.8%, Mg 0.6%, P <0.02%, S<0.01%, the balance is iron and unavoidable tra...

Embodiment 2

[0039] A high chromium alloy casting ball, the components and their weight percentages in the high chromium alloy casting ball are: C 1.8%, Cr 18%, Cu 1%, Mn 0.4%, Mo 0.5%, V 0.04%, Y 0.3% , B 0.8%, Nb 0.005%, Ta0.003%, P<0.02%, S<0.01%, and the balance is Fe.

[0040] The casting method of the above-mentioned high chromium alloy casting ball comprises the following steps:

[0041] 1) Raw material smelting: put the calculated raw materials into high-frequency induction furnace for high-temperature smelting, the melting temperature is 1450°C, after the furnace material is completely melted, add slag remover to remove slag, add 0.05% aluminum for deoxidation Out of the furnace, the temperature of the furnace is 1570°C, and the inoculant is added along with the flow during the process of the furnace out. The mass percentage of each element in the inoculant is Si70%, Ba 7%, Ca 1.3%, Sr 5%, Re 0.6%, Mg 0.7%, P <0.02%, S<0.01%, the balance is iron and unavoidable trace elements;

[...

Embodiment 3

[0050] A high chromium alloy casting ball, the components and their weight percentages in the high chromium alloy casting ball are: C 1.6%, Cr 18%, Cu 0.7%, Mn 0.6%, Mo 0.4%, V 0.04%, Y 0.1% , B 0.3%, Nb 0.004%, Ta0.006%, P<0.02%, S<0.01%, and the balance is Fe.

[0051] The casting method of the above-mentioned high chromium alloy casting ball comprises the following steps:

[0052] 1) Raw material smelting: Add the raw materials calculated according to the proportion into the high-frequency induction furnace for high-temperature smelting. The melting temperature is 1500°C. After the furnace material is completely melted, add a slag remover to remove the slag, and add 0.05% aluminum for deoxidation. Out of the furnace, the temperature of the furnace is 1560°C, and the inoculant is added along with the flow during the process of the furnace out. The mass percentage of each element in the inoculant is Si60%, Ba 8%, Ca 1.2%, Sr 5%, Re 0.4%, Mg 0.8%, P <0.02%, S<0.01%, the balan...

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PUM

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Abstract

The invention provides a high-chromium alloy cast ball and a casting method thereof. The high-chromium alloy cast ball comprises the following components in percentage by weight:1.6-2.5% of C, 15-19%of Cr, 0.7-1.1% of Cu, 0.2-0.7% of Mn, 0.4-0.8% of Mo, 0.02-0.05% of V, 0.1-0.4% of Y, 0.7-1.2% of B, 0.004-0.009% of Nb, 0.002-0.007% of Ta, less than 0.02% of P, less than 0.01% of S and the balanceof Fe. The casting method comprises the following steps: (1) raw material smelting: adding the raw materials calculated in proportion into a high-frequency induction furnace for high-temperature smelting, adding a deslagging agent for deslagging after furnace charge is completely molten, adding 0.05% of aluminum for deoxidation, discharging, and adding an inoculant along with flow in the discharging process; 2, pouring moulding: setting the pouring temperature from 1420 DEG C to 1440 DEG C, setting the pouring time from 5 min to 9 min, and obtaining the high-chromium alloy cast ball primary finished product; 3, enabling the high-chromium alloy cast ball primary finished product to be subjected to heat treatment to obtain the high-chromium alloy cast ball finished product. The high-chromium alloy cast ball has excellent abrasion resistance and impact resistance, high hardness and long service life.

Description

technical field [0001] The invention relates to the technical field of wear-resistant materials, in particular to a high-chromium alloy casting ball and a casting method thereof. Background technique [0002] Humans have used cast iron for more than 2,400 years, and it can be traced back to the plowshare used in agricultural production during the Spring and Autumn and Warring States Periods. However, due to the defects of poor toughness, easy cracking, and difficulty in casting and molding of cast iron, its application has not been widely promoted for a long time thereafter. At the beginning of the 20th century, due to the progress of smelting and casting technology, researchers made a lot of improvements to cast iron, especially the toughness and wear resistance of cast iron were significantly improved, so far it has developed into an important wear-resistant material. [0003] As a representative of wear-resistant metal, high-chromium cast iron has excellent comprehensive...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C37/06C22C38/04C22C38/20C22C38/22C22C38/24C22C38/26C22C38/32C22C38/36C22C33/08C22C33/04C21D1/26C21D1/18C21D9/36
CPCC21D1/18C21D1/26C21D9/36C22C33/04C22C33/08C22C37/06C22C38/002C22C38/005C22C38/04C22C38/20C22C38/22C22C38/24C22C38/26C22C38/32C22C38/36
Inventor 蔡发华
Owner 马鞍山常裕机械设备股份有限公司
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