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Copper steel composite material, arc additive preparing method and application of copper steel composite material and tin bronze alloy

A composite material, tin bronze technology, applied in arc welding equipment, additive processing, manufacturing tools, etc., can solve the problems of coarse microstructure, low bonding strength of additive layer, poor wear resistance, etc., to improve bonding strength, The effect of high aluminum content and high bond strength

Active Publication Date: 2019-07-23
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, traditional MIG welding arc additives are prone to problems such as low bonding strength of the additive layer, poor wear resistance, and coarse microstructure.

Method used

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  • Copper steel composite material, arc additive preparing method and application of copper steel composite material and tin bronze alloy
  • Copper steel composite material, arc additive preparing method and application of copper steel composite material and tin bronze alloy
  • Copper steel composite material, arc additive preparing method and application of copper steel composite material and tin bronze alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] (1) Melting and casting of new tin bronze alloy rods. Sn, Al, Si, and Cu are mixed according to the ratio of 5wt.% Sn by mass percentage, 0.15wt.% Al, 0.05wt.% Si, and the balance is Cu, heated to a molten state and cast into a 5mm diameter Alloy bars.

[0043] (2) The alloy rod is prepared into a wire with a diameter of 0.8 mm through extrusion and drawing processes.

[0044] (3) Adding the wire material to the surface of the steel plate by electric arc.

[0045] The arc additive process includes the following steps:

[0046] (1) Polish the surface of the steel plate, remove the oxide layer of the steel plate, clean the oil stain and metal powder on the surface of the steel plate with an organic solvent, and then preheat the steel plate to 140°C;

[0047] (2) The new tin bronze wire arc is added to the surface of the steel plate through the CMT digital inverter welding power supply. The parameters of the arc additive process are: current 60A, voltage 12V, argon flo...

Embodiment 2

[0049] (1) Melting and casting of new tin bronze alloy rods. Sn, Al, Si, and Cu are mixed according to the mass percentage of 8wt.% Sn, 0.21wt.% Al, 0.1wt.% Si, and the balance is Cu, heated to a molten state and cast into a 6mm diameter Alloy bars.

[0050] (2) The alloy rod is prepared into a wire with a diameter of 1.0 mm through extrusion and drawing processes.

[0051] (3) Adding the wire material to the surface of the steel plate by electric arc.

[0052] The arc additive process includes the following steps:

[0053] (1) Polish the surface of the steel plate, remove the oxide layer of the steel plate, clean the oil stain and metal powder on the surface of the steel plate with an organic solvent, and then preheat the steel plate to 130°C;

[0054] (2) The new tin bronze wire arc is added to the surface of the steel plate through the CMT digital inverter welding power supply. The parameters of the arc additive process are: current 80A, voltage 13V, argon gas flow rate...

Embodiment 3

[0056] (1) Melting and casting of new tin bronze alloy rods. Sn, Al, Si, and Cu are mixed according to the mass percentage: 8wt.% Sn, 0.23wt.% Al, 0.12wt.% Si, and the balance is Cu, heated to a molten state and cast into a 6mm diameter Alloy bars.

[0057] (2) The alloy rod is prepared into a wire with a diameter of 1.2 mm through extrusion and drawing processes.

[0058] (3) Adding the wire material to the surface of the steel plate by electric arc.

[0059] The arc additive process includes the following steps:

[0060] (1) Polish the surface of the steel plate, remove the oxide layer of the steel plate, clean the oil stain and metal powder on the surface of the steel plate with an organic solvent, and then preheat the steel plate to 120°C;

[0061] (2) The new tin bronze wire arc is added to the surface of the steel plate through the CMT digital inverter welding power supply. The parameters of the arc additive process are: electricity 85A, voltage 14.0V, argon gas flow...

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Abstract

The invention discloses a copper steel composite material, an arc additive preparing method and application of the copper steel composite material and a tin bronze alloy. The composite material is composed of a copper alloy layer and a steel layer. The copper alloy layer is novel tin bronze and comprises the following components including, by weight percent, 5%-10% of Sn, 0.15%-0.35% of Al, 0.05%-0.2% of Si, smaller than 0.01% of Pb, smaller than 0.01% of Ni and the balance Cu. A preparing technology of the composite material includes the steps that firstly, casting of a novel tin bronze alloybar is conducted; secondly, the alloy bar is subjected to extruding and drawing technologies, and a wire with the diameter being 0.8 mm to 1.6 mm is prepared; and thirdly, the wire is arranged on thesurface of a steel plate in an arc additive manner, and the copper / steel composite material is obtained. The copper steel composite material is high in combination strength and has dendrite tissue which is compact, uniform and fine, and the wear reducing and resisting performance and the bearing performance are high.

Description

technical field [0001] The invention relates to a copper-steel composite material and its preparation method, application and tin bronze alloy, in particular to the material, preparation and application for manufacturing multilayer bearing bushes and shaft sleeves. Background technique [0002] Lead bronze, tin bronze and aluminum bronze are wear-resistant materials widely used in low-speed and heavy-duty sliding friction parts. However, a single copper metal is difficult to guarantee the stiffness and fatigue performance of the bearing, and often needs to be combined with steel to become a bimetal or multilayer metal. There are many steel / copper composite processes. The most common and simple method is to spread copper powder on the surface of the steel substrate, compact and sinter the compound, but the density is often not high and the grains are coarse. Casting copper alloy on the steel back material, continuous casting and rolling can obtain bimetal with higher bonding...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/04B33Y10/00C22C9/02
CPCB23K9/04B33Y10/00C22C9/02
Inventor 周健陈晨赵靖宇张雪梅李赛鹏魏明震薛烽白晶
Owner SOUTHEAST UNIV
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