Electric welding electrode

A technology of welding rod and welding rod, which is applied in the direction of welding medium, welding equipment, welding/cutting medium/material, etc., can solve the problems of high price and achieve the effects of small spatter, easy arc re-strike, and wide welding wave

Inactive Publication Date: 2009-10-21
张好文
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But because of its pure nickel core, it is expensive

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The welding rod of this embodiment is used for welding the fuselage of a transformer foil winding machine. The fuselage material of the transformer foil winding machine is cast iron. Due to the large internal stress of the cast iron, cracks are generated during long-term work, and the cracks continue to expand and eventually cause the fuselage to break. The welding rod of this embodiment is used to weld the fuselage, and the weld seam is formed beautifully. No defects such as welding cracks have been found after inspection, and the welded fuselage can fully meet the performance requirements. It has been working continuously for about 3 years until the filing date. any problem.

[0016] The concrete composition of the welding rod in this embodiment is:

[0017] The electrode is composed of welding core, copper tube and coating from the inside to the outside. The welding core, copper tube and coating account for the total mass % of the electrode: welding core: 36, copper...

Embodiment 2

[0019] The welding rod of this embodiment is used for welding the front end and the handle of the steel bar pliers. The front end of the steel bar pliers is cast steel, and the rear end handle is not made of copper pipe but ordinary steel pipe. The welding seam connecting the cast iron and steel pipe is the fulcrum of the force arm of the steel bar pliers, so this welding position is the position with the greatest force. Because the strength of the previous weld seam could not meet the requirements, the steel bar pliers broke at the weld seam during use. After welding with the electrode of this embodiment, no welding defects such as cracks are found in the weld seam after inspection, and the strength of the weld seam meets the requirements for use.

[0020] The concrete composition of the welding rod in this embodiment is:

[0021] The electrode is composed of welding core, copper tube and coating from the inside to the outside. The welding core, copper tube and coating accou...

Embodiment 3

[0023] The welding rod of this embodiment is used for the welding of the gearbox body of the lathe. The body material of the lathe gearbox is cast iron, which was seriously damaged during the handling process, resulting in the rupture of the right side. After welding with the welding rod in this embodiment, no welding defects such as cracks were detected in the weld seam. The gearbox body after welding and repairing has good performance.

[0024] The concrete composition of the welding rod in this embodiment is:

[0025] The electrode is composed of welding core, copper tube and coating from the inside to the outside. The welding core, copper tube and coating account for the total mass % of the electrode: welding core: 40, copper tube: 37, coating: 23; the welding core is H08A steel; the coating is J422 electrode coating; the specific composition of the copper tube is (accounting for the total mass of the copper tube): C: 1.34, Mn: 3.59, Ni: 0.98, Si: 0.7, Cr: 0.7, P: 2.7, ...

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PUM

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Abstract

The invention discloses an electric welding electrode which consists of a welding core, a copper pipe and a coating from inside to outside. The welding core, the copper pipe and the coating account for the following percentages of the total mass of the electric welding electrode respectively: 36 percent to 40 percent; 33 percent to 37 percent; and 23 percent to 31 percent. The welding core is made of H08A steel and the coating is the coating of a J422 welding electrode; the components of the copper pipe are as follows (account for percentages of the total mass of the copper pipe): 0.21 to 1.34 percent of C; 1.28 to 3.59 percent of Mn; 0.53 to 0.98 percent of Ni; 0.38 to 0.7 percent of Si; 0.32 to 0.7 percent of Cr; 0.86 to 2.7 percent of P; 0.075 to 0.09 percent of S; and the balance of Cu and unavoidable impurities.

Description

technical field [0001] The invention relates to a metal welding material, in particular to an electric welding rod. Background technique [0002] Cast iron is widely used, but when welding cast iron and cast iron or cast iron and ordinary carbon steel, due to the high carbon content, high brittleness and poor plasticity of cast iron itself, the residual internal stress of the weld after welding is often difficult. Elimination, so that the weld is prone to welding defects such as cracks. [0003] Structural steel electrodes (such as J422 electrodes) or nickel-based cast iron electrodes (such as Z308 electrodes) are often used in the market to weld between cast irons or between cast iron and steel. [0004] J422 is a common carbon steel electrode. This type of electrode generally uses H08A steel as the welding core, and the coating uses titanium-calcium type coating. It is generally used for welding low-carbon steel structures and low-alloy steels of the same strength level. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/00B23K35/16B23K35/22
Inventor 张好文
Owner 张好文
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