High-hardness high-cracking-resistance gas shielding bead weld flux-cored wire and manufacturing method

A technology with high crack resistance and gas protection, applied in welding equipment, welding medium, manufacturing tools, etc., to achieve the effects of improving crack resistance, arc stability, and improving production efficiency

Active Publication Date: 2014-06-18
TIANJIN YONGCHANG WELDING WIRES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no literature record on the formulation and process of gas shielded surfacing flux-cored wire with high hardness and high crack resistance, which can achieve the effect of high crack resistance while meeting high hardness.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The invention provides a high-hardness and high-crack-resistance flux-cored welding wire for gas-shielded surfacing welding and a preparation method thereof, comprising the following process steps:

[0029] (1) Baking: first bake 5 parts of calcium fluoride, 2 parts of barium fluoride, 8 parts of calcium carbonate, 2 parts of feldspar, 1 part of magnesia, and 4 parts of rutile in a high-temperature baking equipment , the baking temperature is 420°C;

[0030] (2) Mixing powder: Weigh 20 parts of high-carbon ferrochromium (FeCr67C9.5), 8 parts of ferromolybdenum (FeMo60), 6 parts of ferro-titanium (FeTi30), 2 parts of ferroboron (FeB22), 3 parts of ferrosilicon (FeSi75) 8 parts, 8 parts of electrolytic manganese, 8 parts of tungsten powder, 23 parts of iron powder, the drug core powder prepared above is mixed in the powder mixing equipment, and the mixing time is 1 hour;

[0031] (3) Strip cutting: Select SPCC-SD cold-rolled low-carbon steel strip, cut to a suitable size...

Embodiment 2

[0036] The invention provides a high-hardness and high-crack-resistance flux-cored welding wire for gas-shielded surfacing welding and a preparation method thereof, comprising the following process steps:

[0037] (1) Baking: First bake 3 parts of calcium fluoride, 4 parts of sodium fluoride, 6 parts of calcium carbonate, 3 parts of feldspar, 2 parts of magnesia, and 2 parts of rutile in a high-temperature baking equipment , the baking temperature is 390°C;

[0038] (2) Mixing powder: Weigh 30 parts of high-carbon ferrochrome (FeCr67C9.5), 6 parts of ferromolybdenum (FeMo60), 5 parts of ferro-titanium (FeTi30), 4 parts of ferroboron (FeB23), 3 parts of ferrosilicon (FeSi75) 6 parts, 6 parts of electrolytic manganese, 5 parts of tungsten powder, 21 parts of iron powder, the drug core powder prepared above is mixed in the powder mixing equipment, and the mixing time is 2 hours;

[0039] (3) Strip cutting: Select SPCC-SD cold-rolled low-carbon steel strip, cut to a suitable size...

Embodiment 3

[0044] The invention provides a high-hardness and high-crack-resistance flux-cored welding wire for gas-shielded surfacing welding and a preparation method thereof, comprising the following process steps:

[0045] (1) Baking: First bake 2 parts of calcium fluoride, 3 parts of sodium fluoride, 4 parts of barium fluoride, 6 parts of calcium carbonate, 2 parts of feldspar, 1 part of magnesia and 4 parts of rutile at high temperature. Baking in the baking equipment, the baking temperature is 400 ℃;

[0046] (2) Mixing powder: Weigh 40 parts of high-carbon ferrochrome (FeCr67C9.5), 5 parts of ferromolybdenum (FeMo60), 5 parts of ferro-titanium (FeTi40), 5 parts of ferroboron (FeB22), 3 parts of ferrosilicon (FeSi75) part, 8 parts of electrolytic manganese, 10 parts of tungsten powder, and 2 parts of iron powder, the drug core powder prepared above was mixed in the powder mixing equipment, and the mixing time was 1.5 hours;

[0047] (3) Strip cutting: Select SPCC-SD cold-rolled low...

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Abstract

The invention provides a high-hardness high-cracking-resistance gas shielding bead weld flux-cored wire and a manufacturing method. An SPCC-SD cold rolling low-carbon-steel steel belt serves as welding wire raw materials, and a welding wire flux core comprises fluoride, calcium carbonate, feldspar, rutile, magnesia and alloy powder. The manufacturing method includes the steps of baking, powder blending, belt cutting, padding molding, drawing, conducting winding in a layered mode, packaging and the like. The high-hardness high-cracking-resistance gas shielding bead weld flux-cored wire has the advantages that the welding process is good, electric arcs are stable, splashing is small, residues are easy to remove, welding wires have the high cracking resistance, and the Rockwell hardness HRC is higher than 60. Continuous welding can b achieved, and the production efficiency is improved.

Description

technical field [0001] The invention belongs to welding material preparation technology, in particular to a high-hardness and high-crack-resistance flux-cored welding wire for gas-shielded surfacing welding and a preparation method. Background technique [0002] At present, with the rapid development of the economy and the continuous improvement of the technical level, the industry is gradually transforming from labor-intensive to technology-intensive, and the level of mechanization and automation continues to increase. The wear and tear of mechanical equipment components has caused huge economic losses. Among all kinds of wear types, abrasive wear accounts for a large proportion, and abrasive wear basically exists in all kinds of mechanical parts, including mining machinery, engineering machinery, metallurgical machinery, casting machinery and forging machinery. The wear and tear of various machinery reduces production efficiency and shortens the service life. [0003] At ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/30B23K35/40
CPCB23K35/368B23K35/406
Inventor 张健
Owner TIANJIN YONGCHANG WELDING WIRES
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