Large-diameter flux-cored wire for revolving body or wear-resistant composite board overlaying welding

A technology of flux-cored welding wire and composite plate, applied in welding equipment, welding medium, welding/cutting medium/material, etc., can solve problems such as easy moisture absorption, and achieve the effect of improving moisture absorption resistance, uniform distribution and productivity.

Inactive Publication Date: 2009-08-05
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the disadvantages of the existing surfacing welding flux-cored wire, the diameter of which does not exceed 4.0mm, and the seam is easy to absorb moisture, etc., the present invention provides a l

Method used

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  • Large-diameter flux-cored wire for revolving body or wear-resistant composite board overlaying welding
  • Large-diameter flux-cored wire for revolving body or wear-resistant composite board overlaying welding

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0054] Example 1:

[0055] (1) Choose a commercially available H08A steel strip with a wall thickness of 0.4mm and a width of 35mm, and use conventional steel-making cored wire production equipment to roll it into a U-shaped cross-section along the length of the strip (longitudinal);

[0056] (2) Add medicinal powder to the above U-shaped grain with a filling rate of 50% (the filling rate is the ratio of the mass of the medicinal powder to the sum of the mass of the medicinal powder and the steel strip), wherein: the particle size of the medicinal powder is -50~+200 mesh, The powder composition is calculated in parts by weight, including 60 parts high-carbon ferrochromium, 9 parts ferro-vanadium, 4 parts 75# ferrosilicon, 1 part silicon-calcium alloy, 1 part high-carbon ferromanganese, 3 parts aluminum-magnesium alloy, 5 parts boron iron , 4 parts of ferro-titanium, 6 parts of ferromolybdenum, 1 soda ash, 2 rutile.

[0057] The above-mentioned medicinal powder is applied after mix...

Example Embodiment

[0064] Example 2:

[0065] (1) Choose a commercially available H08A steel strip with a wall thickness of 0.45mm and a width of 32mm, and use conventional steel-making cored wire production equipment to roll it into a U-shaped cross-section along the length of the strip (longitudinal);

[0066] (2) Add medicinal powder to the above U-shaped grain with a filling rate of 52% (the filling rate is the ratio of the mass of the medicinal powder to the sum of the mass of the medicinal powder and the steel strip), wherein: the particle size of the medicinal powder is -50~+200 mesh, The powder composition is calculated in parts by weight, including 68 parts of high-carbon ferrochromium, 10 parts of ferro-vanadium, 2 parts of 75# ferrosilicon, 2 parts of silicon-calcium alloy, 1 part of high-carbon ferromanganese, 2 parts of aluminum-magnesium alloy, 12 parts of boron iron , 3 parts of ferro-titanium, 3 parts of ferromolybdenum, 4 parts of graphite, 1 part of rutile.

[0067] The above medic...

Example Embodiment

[0073] Example 3:

[0074] (1) Choose a commercially available H08A steel strip with a wall thickness of 0.45mm and a width of 35mm, and use conventional steel-making cored wire production equipment to roll it into a U-shaped cross-section along the length of the strip (longitudinal);

[0075] (2) Add medicinal powder to the above U-shaped grain with a filling rate of 45% (the filling rate is the ratio of the mass of the medicinal powder to the sum of the mass of the medicinal powder, steel strip and steel wire), wherein: the particle size of the medicinal powder is -50~ +200 mesh, the powder composition is calculated in parts by weight, including 2 parts high-carbon ferrochrome, 15 parts metallic chromium, 5 parts ferro-vanadium, 1 part 75# ferrosilicon, 2 parts high-carbon ferromanganese, 2 parts aluminum-magnesium alloy, 1 part Parts of ferro-titanium, 1 part of ferromolybdenum, 1 part of metallic nickel, 30 parts of iron powder, 2 parts of rutile.

[0076] The above-mentioned ...

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Abstract

The invention discloses a large diameter flux-cored wire for resurfacing welding of a revolving body or a wear resistant composite board. The shape of the longitudinal cross-section of the flux-cored wire is an O shape, the diameter of the flux-cored wire phi is between 4.2 and 6.0mm, and the longitudinal length of the flux-cored wire can be determined freely; the wall thickness of the flux-cored wire is between 0.1 and 0.8mm, and wall interfaces are connected by lock seams; and a powder material with the particle size between -50 and +200 meshes or the powder material and steel wires are wrapped in the wall of the flux-cored wire, wherein the steel wires are positioned in the geometric centre of the longitudinal cross-section of the flux-cored wire, arranged longitudinally along the flux-cored wire and have the same length as the flux-cored wire. The flux-cored wire has high deposition efficiency, is applicable to modes such as submerged arc surfacing welding, open arc surfacing welding, gas protection arc surfacing and the like, and improves the productivity greatly.

Description

Technical field [0001] The invention relates to a welding material, in particular to a large-diameter flux-cored welding wire for surfacing welding of a rotating body or a wear-resistant composite plate. Background technique [0002] On the surface of metal materials or parts, a metal layer with special properties such as wear resistance and corrosion resistance is deposited by a surfacing process to give the surface special properties. It has important engineering significance for prolonging the life of parts and reducing material consumption. This process has been widely used Various sectors of the national economy. The welding materials used for surfacing are coated electrode, solid wire and flux-cored wire. Among them, the arc surfacing of coated electrode has the advantages of simple operation, flexibility and convenience, but the disadvantage is low efficiency; solid wire has high rigidity and is easy to feed. The process performance is good, but the amount of transitional ...

Claims

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Application Information

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IPC IPC(8): B23K35/22B23K35/02
Inventor 孙俊生王冶朱强
Owner SHANDONG UNIV
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