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Self-protecting full position high ductility flux-cored wire for X80 level pipeline pipeline steel welding

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

Active Publication Date: 2008-08-06
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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  • Self-protecting full position high ductility flux-cored wire for X80 level pipeline pipeline steel welding
  • Self-protecting full position high ductility flux-cored wire for X80 level pipeline pipeline steel welding
  • Self-protecting full position high ductility flux-cored wire for X80 level pipeline pipeline steel welding

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Example 1: 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 )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

[0019] 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

[0020] 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%.

[0021] The foregoing examples are summarized in Table 1, and the mechanical properties of the examples are shown in Tables 2-4.

[0022] Table 1:

[0023] Drug core

Element

(%)

Numbering

CaCO 3

CaF 2

BaF 2

AlF 3

al ...

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Abstract

The invention relates to a self-protection whole position high toughness flux-cored wire that is used for steel welding a pipeline of X80 grade. The formula of the wire drug core comprises the mixture of carbonates, fluorides, An2O3, Al-Mg alloys, metal iron powders, metal manganese alloys, metal nickel, wherein, the carbonates account for 30 percent to 40 percent; the fluorides account for 22 percent to 35 percent; An2O3 account for 4 percent to 5 percent; the Al-Mg alloys account for 10 percent to 20 percent; the metal iron powders account for 5 percent to 10 percent; the metal manganese alloys account for 8 percent to 16 percent and the metal nickel account for 5 percent to 7 percent. The self-protection whole position high toughness flux-cored wire which has the advantages of semi-automatic welding and continuous wire feeding without an air protection is strong in anti-wind ability, high in production efficiency, good in welding quality and easy in operation of welders; the self-protection whole position high toughness flux-cored wire which is provided with fine craft operation performance and mechanical performance is stable in electric arc, small in splashing, good in operation and beautiful in 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 Applications(China)
IPC IPC(8): B23K35/368B23K35/40
Inventor 侯杰昌
Owner TIANJIN GOLDEN BRIDGE WELDING MATERIALS GRP