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Acid-resisting, high-toughness and high-wear-resisting cast ball and preparing method thereof

A high anti-wear and cast ball technology, applied in the field of casting, can solve the problems that ordinary cast balls and ultra-high chromium balls cannot meet the requirements of working conditions, increase production costs, and consume large grinding balls, so as to achieve good economic benefits and eliminate stress , Improve the effect of corrosion resistance

Active Publication Date: 2020-04-28
宁国东方碾磨材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Some mines, such as cobalt ore, have working conditions in a strong acid and high corrosion environment, and ordinary cast balls and extra-high chromium balls cannot meet the requirements of the working conditions.
At present, this kind of mine mainly uses stainless steel balls as grinding bodies. Although stainless steel balls are corrosion-resistant and can be used in strong acid and corrosion-resistant environments, their hardness is low, with HRC around 10, and the consumption of grinding balls is large, resulting in serious damage. waste, which greatly increases production costs

Method used

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  • Acid-resisting, high-toughness and high-wear-resisting cast ball and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A method for preparing an acid-resistant tough high-wear casting ball, comprising the following steps:

[0020] S1. Add steel scrap, recarburizer, ferrochromium, ferromanganese, ferrosilicon, ferronickel, and ferromolybdenum in sequence in the smelting furnace, and smelt at 1520-1540°C to obtain molten iron;

[0021] S2. Add 0.3kg / t aluminum ingot to the molten iron for deoxidation before it is released from the furnace, then transfer the molten iron to the transfer ladle, remove the slag and pour it into the pouring ladle, pour it at 1450°C, and obtain the billet after cooling ;

[0022] S3. Raise the temperature of the billet to 500°C for 2 hours, then raise the temperature to 780°C for 2 hours, then raise the temperature to 940°C for 2 hours, then raise the temperature to 1015°C for 2 hours, quench with quenching oil for 10 minutes, and finally keep the temperature at 260°C for 6 hours Tempering treatment is carried out to obtain acid-resistant, strong, tough and we...

Embodiment 2

[0025] A method for preparing an acid-resistant tough high-wear casting ball, comprising the following steps:

[0026] S1. Add steel scrap, recarburizer, ferrochrome, ferromanganese, ferrosilicon, ferronickel, and ferromolybdenum in sequence in the smelting furnace, and smelt at 1530°C to obtain molten iron;

[0027] S2. Add 0.4kg / t aluminum ingot to the molten iron for deoxidation before it is released from the furnace, then transfer the molten iron to the transfer ladle, remove the slag and pour it into the pouring ladle, pour it at 1500°C, and obtain the billet after cooling ;

[0028] S3. Raise the temperature of the billet to 500°C for 2 hours, then raise the temperature to 780°C for 2 hours, then raise the temperature to 950°C for 3 hours, then raise the temperature to 1030°C for 3 hours, quench with quenching oil for 12 minutes, and finally keep the temperature at 275°C for 7 hours Tempering treatment is carried out to obtain acid-resistant, strong, tough and wear-resi...

Embodiment 3

[0031] A method for preparing an acid-resistant tough high-wear casting ball, comprising the following steps:

[0032] S1. Add steel scrap, recarburizer, ferrochrome, ferromanganese, ferrosilicon, ferronickel, and ferromolybdenum in sequence in the smelting furnace, and smelt at 1540°C to obtain molten iron;

[0033] S2. Add 0.5kg / t aluminum ingot to the molten iron for deoxidation before it is released from the furnace, then transfer the molten iron to the transfer ladle, remove the slag and pour it into the pouring ladle, pour it at 1520°C, and obtain the slab after cooling ;

[0034] S3. Raise the temperature of the billet to 510°C for 3 hours, then raise the temperature to 790°C for 3 hours, then raise the temperature to 950°C for 3 hours, then raise the temperature to 1030°C for 3 hours, quench with quenching oil for 15 minutes, and finally keep the temperature at 280°C for 8 hours Tempering treatment is carried out to obtain acid-resistant, strong, tough and wear-resist...

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Abstract

The invention discloses an acid-resisting, high-toughness and high-wear-resisting cast ball and a preparing method thereof. The preparing method includes the following steps that S1, smelting is conducted in a smelting furnace, and iron liquid is obtained; S2, an aluminum ingot is added into the iron liquid for deoxygenation before the iron liquid is discharged out of the furnace, then the iron liquid is transferred into a transferring ladle, after slagging off is conducted, the iron liquid is poured into a pouring ladle for pouring, and a cast blank is obtained after cooling; and S3, the castblank is heated to 500 DEG C to 510 DEG C for heat insulation for 2 h to 3 h, the temperature is then increased to 780 DEG C to 790 DEG C for heat insulation for 2 h to 3 h, then the temperature is increased to 940 DEG C to 950 DEG C for heat insulation for 2 h to 3 h, then the temperature is then increased to 1015 DEG C to 1030 DEG C for heat insulation for 2 h to 3 h, quenching oil is used forquenching for 10 min to 15 min, finally, tempering treatment is conducted after heat insulation is conducted for 6 h to 8 h at the temperature of 260 DEG C to 280 DEG C, and the cast ball is obtained.The cast ball prepared through the method has good acid-resisting and corrosion-resisting performance, in addition, the hardness is high, the wear-resisting performance is good, and economic benefitsare better increased.

Description

technical field [0001] The invention relates to the field of casting technology, in particular to an acid-resistant, strong, tough and highly wear-resistant cast ball and a preparation method thereof. Background technique [0002] Some mines, such as cobalt ore, have working conditions in a strong acid and high corrosion environment, and ordinary cast balls and extra-high chromium balls cannot meet the requirements of the working conditions. At present, this kind of mine mainly uses stainless steel balls as grinding bodies. Although stainless steel balls are corrosion-resistant and can be used in strong acid and corrosion-resistant environments, their hardness is low, with HRC around 10, and the consumption of grinding balls is large, resulting in serious damage. waste, which greatly increases production costs. Therefore, it is necessary to develop an acid-resistant, tough and high-wear-resistant casting ball for mines that can be adapted to be used in a strong acid corrosi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C33/06C22C33/08C21D1/18C21D9/36C22C38/02C22C38/04C22C38/44C22C38/60C22C37/10C22C37/08
CPCC21D1/18C21D9/36C22C33/006C22C33/06C22C33/08C22C37/08C22C37/10C22C38/02C22C38/04C22C38/44C22C38/60Y02P10/20
Inventor 赵金斌赵东凯明章林胡璇杨霄
Owner 宁国东方碾磨材料股份有限公司
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