Welding wire flux core material having crack and air hole resisting performance, and welding wire having crack and air hole resisting performance and preparation method thereof

An anti-porosity and anti-crack technology, applied in welding/cutting media/materials, welding equipment, welding media, etc., can solve the problems of uneven quality of raw materials, affecting welding quality, and prone to cracks and pores in welds. Good oxidation resistance, good crack resistance, good crack resistance effect

Active Publication Date: 2019-12-31
山东聚力焊接材料有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 2. E

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0027] Example 1

[0028] A welding wire flux core material with anti-crack and anti-porosity properties, including the following raw materials and parts by weight: 30 parts rutile, 8 parts reduced titanium, 4 parts fluorite, 3 parts potash feldspar, 1 part potassium fluoride, rare earth 3 parts of ferrosilicon, 3 parts of aluminum-magnesium alloy, 3 parts of low-carbon ferromanganese, 1 part of metallic nickel, 2 parts of ferro-titanium, 3 parts of cerium oxide, and 2 parts of bismuth titanate.

[0029] The method for preparing welding wire using the above-mentioned flux core material is as follows: (1) Mix the above-mentioned flux core material, fully stir, and dry at 850°C for 12 hours to obtain formula powder for use;

[0030] (2) Take a low-carbon steel strip with a thickness of 0.8mm and a width of 12mm, slit it, then wash it with a cleaning solution, roll the U-shaped groove, add the powder described in step (1) into the U-shaped groove, and then close and reduce the diameter ...

Example Embodiment

[0032] Example 2

[0033] A welding wire flux core material with anti-crack and anti-porosity properties, including the following raw materials and parts by weight: 34 parts of rutile, 9 parts of reduced titanium, 5 parts of fluorite, 3.5 parts of potash feldspar, 1.2 parts of potassium fluoride, rare earth 3.5 parts of ferrosilicon, 3.5 parts of aluminum-magnesium alloy, 4 parts of low-carbon ferromanganese, 1.5 parts of metallic nickel, 2.3 parts of ferro-titanium, 3.5 parts of cerium oxide, 2.5 parts of bismuth titanate.

[0034] The method for preparing welding wire using the above-mentioned flux core material is as follows: (1) Mix the above-mentioned flux core material, fully stir, and dry at 900°C for 12 hours to obtain formula powder for use.

[0035] (2) Take a low-carbon steel strip with a thickness of 0.8mm and a width of 12mm, slit it, then wash it with a cleaning solution, roll the U-shaped groove, add the powder described in step (1) into the U-shaped groove, and then c...

Example Embodiment

[0037] Example 3

[0038] A welding wire flux core material with anti-crack and anti-porosity properties, including the following raw materials and parts by weight: 38 parts of rutile, 10 parts of reduced titanium, 7 parts of fluorite, 4.5 parts of potash feldspar, 1.8 parts of potassium fluoride, rare earths 5 parts of ferrosilicon, 4.5 parts of aluminum-magnesium alloy, 4.5 parts of low-carbon ferromanganese, 2.5 parts of metallic nickel, 2.8 parts of ferro-titanium, 4.5 parts of cerium oxide, and 3 parts of bismuth titanate.

[0039] The method for preparing welding wire using the above-mentioned flux core material is as follows: (1) Mix the above-mentioned flux core material, fully stir, and dry at 900°C for 12 hours to obtain formula powder for use.

[0040] (2) Take a carbon steel strip with a thickness of 1.0mm and a width of 14mm, slit it, then wash it with a cleaning solution, roll the U-shaped groove, add the powder described in step (1) to the U-shaped groove, and then clo...

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Abstract

The invention discloses a welding wire flux core material having crack and air hole resisting performance. The welding wire flux core material having the crack and air hole resisting performance consist of raw materials by following weight part: 30-40 parts of rutile, 8-12 parts of reduced titanium, 4-8 parts of fluorite, 3-5 parts of potassium feldspar, 1-2 parts of potassium fluoride, 3-6 partsof rare earth ferrosilicon, 3-5 parts of aluminum magnesium alloy, 3-5 parts of low-carbon ferromanganese, 1-3 parts of metal nickel, 2-3 parts of ferrotitanium, 3-6 parts of cerium oxide and 2-4 parts of bismuth titanate. The welding wire flux core material and a welding wire are suitable for welding of ceramic liners, have the good crack and air hole resisting performance, and can enable structure of deposited metal to obtain fine grain acicular ferrite structure excellent in crack resisting and air hole resisting performance. Meanwhile, weld joint grain structure is purified to obtain goodoxidation resistance and easily separate out the deposited metal impurities, and therefore the deposited metal is enabled to obtain excellent crack resisting and air hole resisting capacity. The welding wire flux core material and the welding wire solve the crack sensitivity and easy air hole generation puzzles which exist in the deposited metal and cannot be solved by common welding materials.

Description

technical field [0001] The invention relates to the technical field of welding materials, in particular to a welding wire flux core material with anti-crack and anti-porosity properties, a welding wire and a preparation method thereof. Background technique [0002] With the rapid development of China's shipbuilding industry, the construction of super-large ships not only brings great opportunities and challenges to expand the international market, but also brings challenges to shipbuilding materials. For this reason, high-strength and large-thickness steel plates are generally used in the hulls of large ships. In order to improve welding quality and welding efficiency, ceramic pad welding is generally used. Ceramic pad welding has excellent characteristics, after use, the weld seam is firm and the mechanical properties are stable. During the manufacturing process of the hull structure, there are often many welds at important stress-bearing nodes that require penetration te...

Claims

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Application Information

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IPC IPC(8): B23K35/40B23K35/368
CPCB23K35/361B23K35/368B23K35/406
Inventor 乔吉春许慧敏冯素英信国松
Owner 山东聚力焊接材料有限公司
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