Environment-friendly safe melting process method of high-performance nickel-aluminum bronze

A technology of nickel-aluminum bronze and process method, which is applied in the field of high-performance nickel-aluminum bronze smelting technology in an environment-friendly and safe manner, which can solve problems such as machinability, environmental pollution, and reduced electrical conductivity, and achieve stable performance and uniform chemical composition.

Active Publication Date: 2015-02-18
中船西安东仪科工集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the traditional smelting method in this industry in China can only meet the main chemical composition requirements of nickel-aluminum bronze (ZCuAl10Ni5Fe5), and the Si content in it always exceeds the standard, and more importantly, it cannot meet the mechanical requirements of nickel-aluminum bronze (ZCuAl10Ni5Fe5). performance requirements
Moreover, the deoxidation of phosphorus copper used in traditional nickel-aluminum bronze smelting will drastically reduce the conductivity, corrosion resistance, machinability and increase the tendency of pores, which will affect the normal use of parts and threaten the operation safety of trains when used as catenary parts for high-speed railways; in addition, traditional After deoxidation in the smelting process, a block refining agent is used to degas and remove slag. It is necessary to use a bell jar to press the refining agent into the molten pool. There are many hazards and hazards in the operation. The solution is easy to splash and hurt people. At the same time, a large amount of smoke is generated. Operators are physically and mentally healthy and cause serious pollution to the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The present embodiment adopts the 150KW intermediate frequency induction furnace with a melting capacity of 170 kilograms, and the specific process is as follows:

[0018] Step 1: Batching: Use No. 1 electrolytic copper, No. 1 electrolytic aluminum, No. 1 electrolytic nickel, and iron sheet for batching in a full furnace. After calculation, the mass percentage of each element in the batching is required to be: Al, 9.5%, Ni, 5.0%, Fe .

[0019] Step 2: Furnace installation: Check that the equipment of the 150KW intermediate frequency induction furnace is qualified, put all the No. 1 electrolytic nickel blocks into the bottom of the crucible of the induction furnace, insert the No. 1 electrolytic copper plate along the vertical direction of the crucible wall, and insert the iron sheet into the gap of the copper plate. The iron sheet placement method can help the iron sheet melt; The aluminum bronze refining agent is evenly sprinkled into the crucible, and N is 5; the re...

Embodiment 2

[0025] The present embodiment adopts the 150KW intermediate frequency induction furnace with a melting capacity of 160 kilograms, and the specific process is:

[0026] Step 1: Batching: Use No. 1 electrolytic copper, No. 1 electrolytic aluminum, No. 1 electrolytic nickel, iron sheet and the same grade of recycled material with clear chemical composition for full furnace batching. The quality of the recycled material is 30% of the total mass of the batching. After calculation The mass percent of each element in the required ingredients is: Al, 9.5%, Ni, 5.0%, Fe, 5.0%, Cu, the balance; the quality of the selected aluminum bronze refining agent with the characteristic of not increasing silicon is 0.4% of the total mass of the ingredients .

[0027] Step 2: Furnace installation: Check that the equipment of the 150KW intermediate frequency induction furnace is qualified, put all the No. 1 electrolytic nickel blocks into the bottom of the crucible of the induction furnace, insert t...

Embodiment 3

[0033] The present embodiment adopts the 150KW intermediate frequency induction furnace with a melting capacity of 150 kilograms, and the specific process is:

[0034] Step 1: Batching: Use No. 1 electrolytic copper, No. 1 electrolytic aluminum, No. 1 electrolytic nickel, iron sheet, and the same grade of recycled material with clear chemical composition for full furnace batching. The quality of the recycled material is 40% of the total mass of ingredients. After calculation The mass percent of each element in the required batching through calculation is: Al, 9.5%, Ni, 5.0%, Fe, 5.0%, Cu, the balance; 0.5%.

[0035] Step 2: Furnace installation: Check that the equipment of the 150KW intermediate frequency induction furnace is qualified, put all the No. 1 electrolytic nickel blocks into the bottom of the crucible of the induction furnace, insert the No. 1 electrolytic copper plate along the vertical direction of the crucible wall, and insert the iron sheet into the gap of the c...

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Abstract

The invention provides an environment-friendly safe melting process method of high-performance nickel-aluminum bronze. The method comprises three steps, namely preparing materials, loading a furnace, melting and casting. According to the method, an aluminum bronze refining agent is added in multiple times, so that deoxidation, degassing and deslagging are carried out simultaneously in the whole process of melting; the time for adding aluminum is determined, so that the molten nickel-aluminum bronze has uniform chemical ingredients, stable performance, tensile strength of 660-710MPa, yield strength of 290-370MPa, ductility of 16-24 percent and hardness of 180-200, and the mechanical performance of the nickel-aluminum bronze is greatly superior to that of the current nickel-aluminum bronze prepared by a traditional method in the industry in China.

Description

technical field [0001] The invention relates to the technical field of smelting nickel-aluminum bronze, in particular to an environmentally-friendly and safe smelting process for high-performance nickel-aluminum bronze. Background technique [0002] For high-speed railway catenary parts, the safety of operation is very important, so the material selection must meet the requirements of high strength, good toughness, high hardness and excellent electrical conductivity. [0003] Nickel-aluminum bronze (ZCuAl10Ni5Fe5) has good mechanical properties and electrical conductivity, which meets the material selection requirements of high-speed railway catenary. The mechanical performance requirements of nickel-aluminum bronze (ZCuAl10Ni5Fe5) are: tensile strength not less than 650MPa, yield strength not less than 280MPa, elongation not less than 7%, and Brinell hardness not less than 150. Its chemical composition is: Al 8.5-10.5%, Ni 4.0-6.0%, Fe 4.0-5.5%, Cu balance, Si less than 0....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/01C22C1/06C22C1/02
CPCC22C1/06C22C9/01
Inventor 田荣县王明虎魏孟范小林李铁麟吕耀斌杨双李赟赵明
Owner 中船西安东仪科工集团有限公司
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