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A self-protected all-position high-toughness flux-cored wire for x80 grade pipeline steel welding

A technology of flux-cored welding wire and pipeline steel, applied in welding medium, welding equipment, welding/cutting medium/material, etc., to achieve the effects of excellent process operation performance and mechanical performance, high production efficiency and low comprehensive cost

Active Publication Date: 2011-12-07
TIANJIN GOLDEN BRIDGE WELDING MATERIALS GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, only a few welding consumable factories in the United States, such as Hubert and Lincoln, are developing welding consumables with such properties, and they are also in the experimental stage. They have not yet produced formal products, and such products have not yet been developed in China. It is very necessary to invent such a self-protected all-position high-toughness flux cored wire in China

Method used

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  • A self-protected all-position high-toughness flux-cored wire for x80 grade pipeline steel welding
  • A self-protected all-position high-toughness flux-cored wire for x80 grade pipeline steel welding
  • A self-protected all-position high-toughness flux-cored wire for x80 grade pipeline steel welding

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Example 1: A self-shielding all-position high-toughness flux-cored wire used for welding X80 grade pipeline steel. It uses common commercially available SPCC-SD cold-rolled low-carbon steel strips as raw materials, and adopts flux-cored transition alloys. This product is produced using the general flux-cored wire manufacturing process, in which the formula of the flux core of the wire is made of calcium carbonate (CaCO 3 )35%, calcium fluoride (CaF 2 )12%, barium fluoride (BaF 2 )15%, aluminum fluoride (AlF 3 )3%, aluminum oxide (Al 2 o 3 ) 4%, aluminum-magnesium alloy 13%, metal iron powder 5%, metal manganese alloy 8%, metal nickel 5%.

Embodiment 2

[0018] Example 2: A self-shielding all-position high-toughness flux-cored wire for welding X80 grade pipeline steel, which uses common commercially available SPCC-SD cold-rolled low-carbon steel strips as raw materials, and adopts flux-cored transition alloys. This product is produced using the general flux-cored wire manufacturing process, in which the formula of the flux core of the wire is made of calcium carbonate (CaCO 3 )31%, calcium fluoride (CaF 2 )15%, barium fluoride (BaF 2 )10%, aluminum fluoride (AlF 3 ) 4%, aluminum oxide (Al 2 o 3 ) 4%, aluminum-magnesium alloy 13%, metallic iron powder 8%, metallic manganese alloy 10%, metallic nickel 5%.

Embodiment 3

[0019] Example 3: A self-shielding all-position high-toughness flux-cored wire for welding X80 grade pipeline steel, which uses common commercially available SPCC-SD cold-rolled low-carbon steel strips as raw materials, and adopts flux-cored transition alloys. This product is produced using the general flux-cored wire manufacturing process, in which the formula of the flux core of the wire is made of calcium carbonate (CaCO 3 )32%, calcium fluoride (CaF 2 )12%, barium fluoride (BaF 2 )10%, aluminum fluoride (AlF 3 )5%, aluminum oxide (Al 2 o 3 ) 4%, aluminum-magnesium alloy 10%, metallic iron powder 7%, metallic manganese alloy 14%, metallic nickel 6%.

[0020] The foregoing examples are summarized in Table 1, and the mechanical properties of the examples are shown in Tables 2-4.

[0021] Table 1:

[0022]

[0023] Table 2: Mechanical Properties of Deposited Metal in Examples

[0024]

[0025] Table 3: Mechanical Properties of Deposited Metal in Examples

[0026]...

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Abstract

A self-shielding all-position high-toughness flux-cored wire for welding X80 grade pipeline steel. Metal manganese alloy and metal nickel are mixed, of which carbonates account for 30-40%, fluorides account for 22-35%, aluminum oxide (Al2O3) accounts for 4-5%, aluminum-magnesium alloys account for 10-20%, metal iron Powder accounts for 5-10%, metal manganese alloy accounts for 8-16% and metal nickel accounts for 5-7%. The advantages of the present invention are: the self-protected all-position high-toughness flux-cored welding wire can be semi-automatically welded, has continuous wire feeding, does not need gas protection, has strong wind resistance, high production efficiency, low overall cost, good welding quality, and is easy for welders. It has excellent process operation performance and mechanical properties, stable arc, small spatter, good operability and beautiful shape.

Description

(1) Technical field: [0001] The invention relates to a welding wire, in particular to a self-protected all-position high-toughness flux-cored welding wire used for welding X80 grade pipeline steel. (two) background technology: [0002] At present, the steel used in pipelines is becoming more and more high-strength and high-toughness. Therefore, people urgently need to use a welding consumable that is simple in construction, good in mechanical properties, high in efficiency, and easy in process operation-self-shielded flux cored wire. However, at present, only a few welding consumable factories in the United States, such as Hubert and Lincoln, are developing welding consumables with such properties, and they are also in the experimental stage. They have not yet produced formal products, and such products have not yet been developed in China. It is very necessary to invent such a self-protected all-position high-toughness flux-cored welding wire in China. (3) Contents of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/368B23K35/40
Inventor 侯杰昌
Owner TIANJIN GOLDEN BRIDGE WELDING MATERIALS GRP