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Composite welding rod

A composite electrode, aluminum-based alloy technology, used in welding media, welding equipment, welding/cutting media/materials, etc., can solve the problem that the electrode head falls off and gets stuck in the mechanical device, huge re-monitoring and maintenance costs, welding and inspection exist It is very difficult and other problems to avoid poor welding, improve electrical conductivity, and facilitate arc ignition.

Inactive Publication Date: 2015-09-09
赵兰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In complex large-scale steel structures such as cranes, offshore drilling platforms and ships, the special position of some welds makes their welding and inspection very difficult
There was a quality accident in which the electrode head was left in the spreader of the quay crane before. Since a hidden weld had just been completed when the electrode working part was burned out, the welder directly released the welding tongs so that the electrode head was left and solidified on the The end of the welding seam was broken. Since the customer found the residual electrode head during routine maintenance after one month of use, there is a risk that the electrode head will fall off and get stuck in the mechanical device. The manufacturer paid a huge amount of re-monitoring and compensation for this. Maintenance costs, it can be seen that under specific application conditions, the current electrode has certain risks

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment 1: A kind of composite welding rod, comprises metal core and coating, and metal core comprises the working part and clamping part of fixed connection, and described coating is coated on the outer surface of described working part, and the material of described working part It is an iron-based alloy, the material of the clamping part is aluminum-based alloy, and the coating contains the following components: 2.8% carbon, 3.0% nickel, 0.9% molybdenum, 3.8% manganese, and the balance is iron oxide ; The above percentages are percentages by weight.

[0015] The composite electrode of this embodiment only needs to be partially improved on the basis of the existing manufacturing process during manufacture, and nickel, molybdenum, and manganese are added to the original components of the coating, and the carbon content in the coating is adjusted to 2.8%. . The composition of the core remains unchanged.

[0016] The manufacturing method of above-mentioned compound ...

Embodiment 2

[0024] Embodiment 2: substantially the same as embodiment 1, the difference is the composition of the drug skin, specifically:

[0025] The coating contains the following components: 2.5% carbon, 2.75% nickel, 0.5% molybdenum, 3.0% manganese, and the rest is iron oxide; the above percentages are weight percentages.

Embodiment 3

[0026] Embodiment 3: substantially the same as embodiment 1, the difference is the composition of the drug skin, specifically:

[0027] The coating contains the following components: 3.0% carbon, 5.0% nickel, 1.2% molybdenum, 4.5% manganese, and the rest is iron oxide; the above percentages are weight percentages.

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Abstract

The invention discloses a composite welding rod and a manufacture method thereof. The composite welding rod comprises a metal core and a coating, wherein the metal core comprises a work portion and a clamp portion which are fixedly connected, the coating coats the outer surface of the work portion, the work portion is made of iron-base alloy, the clamp portion is made of aluminum-base alloy, and the coating contains following compositions of, by weight percentage, 2.5-3.0% of carbon, 2.75-5.0% of nickel, 0.5-1.2% of molybdenum, 3.0-4.5% of manganese, and the balance iron oxide. The manufacture method of the composite welding rod includes: coating the work portion and the clamp portion with the coating after friction welding is performed on the work portion and the clamp portion. The composite welding rod and the manufacture method thereof prevent welding rod stub residues from being left on weld joints after the welding is completed.

Description

technical field [0001] The invention relates to a covered electrode for arc welding, in particular to a composite electrode and a manufacturing method thereof. Background technique [0002] Electrode arc welding is the most widely used welding method in industrial production. It belongs to gas-slag combined protection metal arc welding. Its principle is to use the heat generated by arc discharge to melt the electrode and the workpiece and form a weld after condensation , so as to obtain a firm bonding interface between the workpieces. It has the advantages of good flexibility, convenient operation, low assembly requirements before welding, and simple equipment. Therefore, although automatic welding equipment such as gas shielded welding machines and welding robots have been widely used in steel structure manufacturing, traditional arc welding with electrodes is still required for manual welding in some complex welds. [0003] The tool usually used in manual arc welding is ...

Claims

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Application Information

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IPC IPC(8): B23K35/365
CPCB23K35/365
Inventor 不公告发明人
Owner 赵兰
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