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WC-Co hard alloy and steel-tungsten argon arc welding material and production process thereof

A technology of argon tungsten arc welding and hard alloy, which is applied in the direction of welding/cutting medium/material, welding medium, welding equipment, etc., can solve the problems of low bending strength of joint parts, low strength and use temperature, and high equipment requirements. Achieve the effect of increased demand, low price and good toughness

Inactive Publication Date: 2004-06-30
DALIAN RAILWAY COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, the method of brazing is usually used to combine cemented carbide with steel, which has low strength and low service temperature, while the use of diffusion welding requires high production equipment, and harmful η phases are easily formed at the interface between cemented carbide and steel, causing the joint to bend. low strength
There is no report on the research on the connection of cemented carbide and steel by tungsten inert gas welding (TIG welding)

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0016] Example 1: The materials to be welded are WC-Co series YG30 cemented carbide and 45 steel, and the filler welding material composition is (weight percent) Ni 35Kg; C 0.6Kg; Mn 2.6Kg; Si 1.46Kg; Ti 1.57Kg; Fe 59.77Kg . The welding material is made through its production process, and the diameter of the welding wire is 1.2mm. When welding, the material to be welded with a diameter of 32 mm and a thickness of 6 mm is respectively grooved at 30 degrees along its diameter corresponding to both sides, and then the welding material of the present invention can be used for welding. The TIG welding process parameters are: welding current 90A ; Frequency 80Hz; Welding speed 40mm / min.

example 2

[0017] Example 2: The materials to be welded are WC-Co series YG30 hard alloy and 45 steel. The composition of the filler welding material is (weight percent) Ni 55Kg; C 0.61Kg; Mn 2.62Kg; Si 0.46Kg; Ti 1.57Kg; Fe 39.74Kg. The welding material is made through its production process, and the diameter of the welding wire is 1.2mm. When welding, the material to be welded with a diameter of 32 mm and a thickness of 6 mm is grooved at 30 degrees along its diameter corresponding to both sides, and then the welding material of the present invention can be used for welding. The TIG welding process parameters are: welding current 90A; Frequency 80Hz; welding speed 40mm / min.

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Abstract

The present invention relates to a WC-Co hard alloy and steel tungsten argon arc welding welding maleral, belonging to the field of welding technology. It is a new type welding material for TIG welding, and is a new TIG welding forming tecyhnique of hard alloy and steel. The composition of said welding material is formed from Ni, C, Mn, Si, Ti and Fe, and said invention adopts correspondent production process to draw it into welding stick. Said invention can be extensively used in various fields of mine rock-boring tool, drawing die and punching-cutting tool requiring high hardness, high abrasion-resistance and high toughness.

Description

Technical field [0001] The welding material for WC-Co cemented carbide and steel tungsten argon arc welding belongs to a new type of welding material for TIG welding used in the field of welding and a production process for manufacturing the material. Background technique [0002] The cemented carbide currently used in the industrial field is widely used in mechanical processing, geological exploration, mining and other industrial fields due to its excellent performance. The connection of cemented carbide and steel has become the main method to solve the existing problems of cemented carbide, such as limited size, simple shape, high cost, and poor toughness. However, at present, the method of brazing is usually used to combine cemented carbide with steel, which has low strength and low service temperature, while the use of diffusion welding requires high production equipment, and harmful η phases are easily formed at the interface between cemented carbide and steel, causing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/22B23K35/40
Inventor 杨德新赵秀娟
Owner DALIAN RAILWAY COLLEGE