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Tubular welding wire for antiwear, heat resistant and antishock bead welding

A tubular welding wire, impact-resistant technology, applied in the direction of welding medium, welding equipment, welding/cutting medium/material, etc., can solve the problems of limited application range, peeling of welding layer, high red hardness, etc., and achieve high red hardness, stable structure, fine tissue effect

Inactive Publication Date: 2006-03-01
李波 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the wear-resistant surfacing welding tubular flux-cored welding wire is mostly made of tungsten carbide or high-carbon ferrochromium. High hardness. It is only suitable for strong wear occasions under mild impact. The surfacing welding workpiece needs to be preheated before welding. Slow cooling after welding will cause severe hardness attenuation under high temperature conditions, and fatigue will occur faster under moderate impact. The welding layer peels off a lot, and the scope of use is greatly limited

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The raw materials are weighed according to the weight ratio of chromium: molybdenum: niobium: carbon: tungsten: iron vanadium: magnesium is 20:8:8:3:5:7:2.

[0018] The said ferrovanadium is type 80 ferrovanadium, that is, the content of metal vanadium reaches 80%.

[0019] Select 12×0.3 (12mm in width and 0.3mm in thickness) H08A type steel strip to press and roll into U shape.

[0020] According to the prior art, the raw materials selected according to the composition ratio are pulverized respectively, passed through a 20-60 mesh sieve, then the raw material powders are mixed evenly, and the powders are added into a U-shaped steel strip with a filling rate of 58%. Close the U-shaped groove to wrap the medicine powder in it, then pass through the wire drawing die, draw and reduce the diameter one by one, and finally make the diameter reach 1.8-4.0mm.

Embodiment 2-8

[0022] Example

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Abstract

The tubular bead welding wire is made through rolling H08A steel belt into U shape and adding chromium carbide, molybdenum powder, niobium powder, graphite, WC and ferrovanadium in certain proportion. The present invention has proper amount of graphite and chromium carbide, homogeneous powder in the welding wire, greatly reduced floating, high welding seam wear resistance, high anticracking property of the bead welded layer, long service life of the welded part and other advantages.

Description

technical field [0001] A wear-resistant, heat-resistant and shock-resistant surfacing welding tubular welding wire belongs to the field of welding technology in material processing. Background technique [0002] In recent years, flux-cored wire has been used in the field of surfacing welding, and has developed into a new type of surface strengthening technology. Generally speaking, flux-cored wire surfacing welding does not require gas protection, no flux, and is easy to operate. It has the characteristics of cleanliness, high efficiency, and low cost. ①Cleaning: Flux-cored wire surfacing is a clean surface strengthening technology. This method does not require additional protective gas and flux, so the working environment is clean, the structure of the welding torch is simplified, and a centralized dust exhaust device can be conveniently added above the welding torch to make the welding work easier. The environment has been greatly improved. This is unmatched by other weld...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/24B23K35/32
Inventor 李波李涛
Owner 李波
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