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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 improved moisture absorption resistance, low production cost, and deposition efficiency. high effect

Inactive Publication Date: 2011-04-27
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 large-diameter surfacing welding flux-cored welding wire with high deposition efficiency, that is, a rotating body (roller) or Large-diameter flux-cored wire for overlay welding of wear-resistant composite plates

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] (1) select wall thickness to be 0.4mm, the commercially available H08A steel strip that width is 35mm, utilize conventional steelmaking to use the cored wire production equipment, it is U-shaped to be rolled into its cross section along the steel strip length direction (longitudinal);

[0056] (2) Add medicinal powder in above-mentioned U-shaped pit, filling rate is 50% (filling rate is the ratio of medicinal powder quality and medicinal powder and steel strip quality sum), wherein: the granularity of described medicinal powder is-50~+200 order, The ingredients of the powder are in parts by weight, including 60 parts of high-carbon ferrochrome, 9 parts of ferro-vanadium, 4 parts of 75# ferrosilicon, 1 part of silicon-calcium alloy, 1 part of high-carbon ferromanganese, 3 parts of aluminum-magnesium alloy, and 5 parts of ferroboron , 4 parts of ferro-titanium, 6 parts of ferro-molybdenum, 1 part of soda ash, and 2 parts of rutile.

[0057] The above-mentioned medicated p...

Embodiment 2

[0065] (1) select wall thickness as 0.45mm, and width is the commercially available H08A steel strip of 32mm, utilizes conventional steelmaking cored wire production equipment, it is rolled into cross-section along the steel strip length direction (longitudinal) and is U shape;

[0066] (2) Add medicinal powder in above-mentioned U-shaped pit, filling rate is 52% (filling rate is the ratio of medicinal powder quality and medicinal powder and steel strip quality sum), wherein: the granularity of described medicinal powder is-50~+200 order, The ingredients of the powder are in parts by weight, including 68 parts of high-carbon ferrochrome, 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, and 12 parts of ferroboron , 3 parts of ferro-titanium, 3 parts of ferromolybdenum, 4 parts of graphite, and 1 part of rutile.

[0067] The above-mentioned medicated powder is app...

Embodiment 3

[0074] (1) select wall thickness as 0.45mm, and width is the commercially available H08A steel strip of 35mm, utilizes conventional steelmaking to use the cored wire production equipment, along the steel strip length direction (longitudinal direction) its cross-section is rolled into U-shape;

[0075] (2) add medicinal powder in above-mentioned U-shaped pit, filling rate is 45% (filling rate is the ratio of medicinal powder quality and medicinal powder, steel strip and steel wire three quality sum), wherein: the granularity of described medicinal powder is-50~ +200 mesh, the composition of the powder is in parts by weight, including 2 parts of high-carbon ferrochromium, 15 parts of metallic chromium, 5 parts of ferrovanadium, 1 part of 75# ferrosilicon, 2 parts of high-carbon ferromanganese, 2 parts of aluminum-magnesium alloy, 1 1 part ferro-titanium, 1 part ferromolybdenum, 1 part nickel metal, 30 parts iron powder, 2 parts rutile.

[0076] The above-mentioned medicated powd...

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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-coredwire 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 revolving body or a wear-resistant composite plate. Background technique [0002] On the surface of metal materials or parts, the metal layer with special properties such as wear resistance and corrosion resistance is deposited by surfacing welding process, which endows the surface with special properties. It has important engineering significance for prolonging the life of parts and reducing material consumption. This process has been widely used. sectors of the national economy. The welding materials used in surfacing welding include coated electrodes, solid cored wires and flux cored wires. Among them, covered electrode arc surfacing welding has the advantages of simple operation, flexibility and convenience, etc. The disadvantage is low efficiency; solid cored wire has high rigidity, easy wire feeding, The process perfo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/02B23K35/22
Inventor 孙俊生王冶朱强
Owner SHANDONG UNIV
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