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High-strength high-wear-resistance steel casting for super-huge type crusher and production process of steel casting

A production process and technology for steel castings, applied in the field of high-strength, high-wear-resistant steel castings and their production processes, can solve the problems of easy cracking and poor impact toughness of steel castings, and achieve enhanced deformation hardening performance and improved work hardening. Capacity and wear resistance, cost reduction effect

Active Publication Date: 2015-09-16
SANMING CITY YIJUN MACHINERY FOUNDRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a high-strength and high-wear-resistant steel casting for extra-large crushers and its production process, and its purpose is to solve the problems that the steel castings of extra-large crushers are easy to crack and have poor impact toughness under low temperature conditions.

Method used

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  • High-strength high-wear-resistance steel casting for super-huge type crusher and production process of steel casting
  • High-strength high-wear-resistance steel casting for super-huge type crusher and production process of steel casting
  • High-strength high-wear-resistance steel casting for super-huge type crusher and production process of steel casting

Examples

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Effect test

Embodiment 1

[0026] The production process of high-strength and high-wear-resistant steel castings for extra-large crushers, the steps are as follows:

[0027] (1) The intermediate frequency furnace with neutral sand lining is used for smelting. The steel shavings, rust-free low-carbon punching briquettes and micro-carbon ferrochrome are mixed and then heated and melted by the intermediate frequency furnace to form molten steel in a molten state.

[0028] (2) Put the molten steel into the AOD refining furnace for refining.

[0029] (3) Ferrosilicon and electrolytic manganese are added to the refined molten steel for smelting.

[0030] (4) Add the returned material of the same grade after derusting for smelting, and after the molten steel is melted, take a sample and analyze its chemical composition with a spectrometer.

[0031] (5) According to the results of chemical composition analysis, the alloy composition of molten steel is fine-tuned; the added alloy is baked to 200°C before adding...

Embodiment 2

[0047] The production process of high-strength and high-wear-resistant steel castings for extra-large crushers, the steps are as follows:

[0048] (1) The intermediate frequency furnace with neutral sand lining is used for smelting. The steel shavings, rust-free low-carbon punching briquettes and micro-carbon ferrochrome are mixed and then heated and melted by the intermediate frequency furnace to form molten steel in a molten state.

[0049] (2) Put the molten steel into the AOD refining furnace for refining.

[0050] (3) Ferrosilicon and electrolytic manganese are added to the refined molten steel for smelting.

[0051] (4) Add the returned material of the same grade after derusting for smelting, and after the molten steel is melted, take a sample and analyze its chemical composition with a spectrometer.

[0052] (5) According to the results of chemical composition analysis, the alloy composition of molten steel is fine-tuned; the added alloy is baked to 200°C before adding...

Embodiment 3

[0068] The production process of high-strength and high-wear-resistant steel castings for extra-large crushers, the steps are as follows:

[0069] (1) The intermediate frequency furnace with neutral sand lining is used for smelting. The steel shavings, rust-free low-carbon punching briquettes and micro-carbon ferrochrome are mixed and then heated and melted by the intermediate frequency furnace to form molten steel in a molten state.

[0070] (2) Put the molten steel into the AOD refining furnace for refining.

[0071] (3) Ferrosilicon and electrolytic manganese are added to the refined molten steel for smelting.

[0072] (4) Add the returned material of the same grade after derusting for smelting, and after the molten steel is melted, take a sample and analyze its chemical composition with a spectrometer.

[0073] (5) According to the results of chemical composition analysis, the alloy composition of molten steel is fine-tuned; the added alloy is baked to 200°C before adding...

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Abstract

The invention discloses a high-strength high-wear-resistance steel casting for a super-huge type crusher. The high-strength high-wear-resistance steel casting is characterized by comprising the following chemical components in percentage by weight: 1.31%-1.40% of C, 0.50%-0.90% of Si, 17.5%-19.0% of Mn, P is less than or equal to 0.040, S is less than or equal to 0.020, 1.00%-1.40% of Cr, Ni is less than or equal to 0.60, Mo is less than or equal to 0.50, 0.005%-0.010% of B, 0.08%-0.12% of Al, 0.10%-0.18% of Ti, 0.05%-0.09% of La, 0.05%-0.10% of Ce, 0.05%-0.10% of V and the balance of Fe and unavoidable trace impurities. The invention further discloses a process for producing the high-strength high-wear-resistance steel casting. The high-strength high-wear-resistance steel casting is relatively good in tenacity and wear resistance, long in service life and applicable to the super-huge type crusher.

Description

technical field [0001] The invention relates to a steel casting and its production process, in particular to a high-strength and high-wear resistance steel casting for extra-large crushers and its production process. Background technique [0002] Crusher is widely used in many departments such as mining, smelting, building materials, roads, railways, water conservancy and chemical industries. [0003] Steel castings are an important part of the crusher. Taking the liner as an example, the function of the liner is to protect the cylinder so that the cylinder is not directly impacted and worn by the grinding body and the material. It can also use its different working surfaces to adjust the working state of the grinding body to enhance the grinding Daily crushing of materials, improve grinding efficiency, increase output, reduce loss of media and liners. Extra-large crushers are larger in size, and the liners they need to use are larger than ordinary crushers, and they are s...

Claims

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Application Information

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IPC IPC(8): C22C38/58C22C38/38C22C33/06C21C7/06B22C9/02B22C9/12
CPCY02P10/20
Inventor 郑明华刘渊毅刘薇黄志达蔡建
Owner SANMING CITY YIJUN MACHINERY FOUNDRY
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