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Method for refining high-chromium cast iron by blowing argon in medium-frequency induction furnace

A technology of induction electric furnace and high chromium cast iron, which is applied in the field of refining and purification, to achieve the characteristics of excellent thermal shock resistance and slag erosion resistance, reduce investment, avoid oxidation and loss

Inactive Publication Date: 2018-10-16
广西长城机械股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The invention provides a method for refining high-chromium cast iron by blowing argon in an intermediate frequency induction furnace to solve the above problems existing in the system for refining high-chromium cast iron in the prior art

Method used

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  • Method for refining high-chromium cast iron by blowing argon in medium-frequency induction furnace
  • Method for refining high-chromium cast iron by blowing argon in medium-frequency induction furnace
  • Method for refining high-chromium cast iron by blowing argon in medium-frequency induction furnace

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] A system for refining high chromium cast iron, including: furnace shell 1, furnace lining 2, furnace wall layer (crucible) 3, base 4, gas diffuser 5, ventilation brick 6, air inlet pipe 7, joint 8, furnace protection contact Head 9, contact protector 10, wire 11, furnace cover 12, flow regulator 13, pressure reducing valve 14, argon gas cylinder 15, the furnace shell 1 wraps the furnace lining 2, and the outer surface of the furnace lining 2 is provided with a furnace Wall layer 3, the bottom of the furnace shell 1 is provided with a base 4, and above the base 4 is provided with a gas diffuser 5 and a breathable brick 6, and the breathable brick 6 wraps the gas diffuser 5, and the air intake pipe 7 Connected with the gas diffuser 5, the joint 8 is connected with the intake pipe 7 and fixed on the base 4, the furnace body protection contact 9, the contact protector 10, and the wire 11 form a furnace lining protection device, and the furnace body The protective contact 9 ...

Embodiment 2

[0087] A system for refining high chromium cast iron, including: furnace shell 1, furnace lining 2, furnace wall layer (crucible) 3, base 4, gas diffuser 5, ventilation brick 6, air inlet pipe 7, joint 8, furnace protection contact Head 9, contact protector 10, wire 11, furnace cover 12, flow regulator 13, pressure reducing valve 14, argon gas cylinder 15, the furnace shell 1 wraps the furnace lining 2, and the outer surface of the furnace lining 2 is provided with a furnace Wall layer 3, the bottom of the furnace shell 1 is provided with a base 4, and above the base 4 is provided with a gas diffuser 5 and a breathable brick 6, and the breathable brick 6 wraps the gas diffuser 5, and the air intake pipe 7 Connected with the gas diffuser 5, the joint 8 is connected with the intake pipe 7 and fixed on the base 4, the furnace body protection contact 9, the contact protector 10, and the wire 11 form a furnace lining protection device, and the furnace body The protective contact 9 ...

Embodiment 3

[0117] A system for refining high chromium cast iron, including: furnace shell 1, furnace lining 2, furnace wall layer (crucible) 3, base 4, gas diffuser 5, ventilation brick 6, air inlet pipe 7, joint 8, furnace protection contact Head 9, contact protector 10, wire 11, furnace cover 12, flow regulator 13, pressure reducing valve 14, argon gas cylinder 15, the furnace shell 1 wraps the furnace lining 2, and the outer surface of the furnace lining 2 is provided with a furnace Wall layer 3, the bottom of the furnace shell 1 is provided with a base 4, and above the base 4 is provided with a gas diffuser 5 and a breathable brick 6, and the breathable brick 6 wraps the gas diffuser 5, and the air intake pipe 7 Connected with the gas diffuser 5, the joint 8 is connected with the intake pipe 7 and fixed on the base 4, the furnace body protection contact 9, the contact protector 10, and the wire 11 form a furnace lining protection device, and the furnace body The protective contact 9 ...

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Abstract

The invention discloses a method for refining high-chromium cast iron by blowing argon in a medium-frequency induction furnace. The method comprises the steps of knotting of a crucible, preparation ofmaterials, charging and smelting, adjustment of chemical components, in-furnace calming and temperature-control tapping. Through injection of argon, such impurities as slag and oxides in high-chromium cast iron water quickly float up, so that the purification is sufficient, the component oxidation and loss of the high-chromium cast iron water are effectively prevented, the energy conservation andthe effect improvement are facilitated, and the safety and the practicability are achieved.

Description

technical field [0001] The invention belongs to the technical field of refining and purification, and in particular relates to a method for refining high-chromium cast iron by blowing argon in an intermediate frequency induction electric furnace. Background technique [0002] High chromium cast iron is widely used in mechanical equipment components in metallurgy, mining, building materials, cement, railway, electric power, petrochemical, military and other industries. The wear resistance and service life of high chromium cast iron castings have a very important relationship with metallurgical quality. Improving the wear resistance of high-chromium cast iron castings and prolonging their service life are of great significance for continuous production, reducing economic losses, increasing economic benefits, creating high-quality wear-resistant castings and brands, and participating in international market competition. [0003] The purity of high chromium cast iron liquid dir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C1/08C21C7/072C22C33/08
CPCC21C1/08C21C7/072C22C33/08
Inventor 赵四勇廖钊康建田辉周正
Owner 广西长城机械股份有限公司