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Welding material and welding method for welding transition layer of Ti-pipeline steel composite board

A technology for welding materials and pipeline steel, applied in welding/cutting media/materials, welding media, welding equipment, etc., to achieve the effects of excellent strength and toughness, high welding efficiency, and simplified welding process

Inactive Publication Date: 2014-02-12
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a welding material for welding the transition layer of titanium-pipeline steel composite plate, which solves the problem that there is no material directly used for welding the transition layer of titanium-pipeline steel composite plate

Method used

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  • Welding material and welding method for welding transition layer of Ti-pipeline steel composite board
  • Welding material and welding method for welding transition layer of Ti-pipeline steel composite board
  • Welding material and welding method for welding transition layer of Ti-pipeline steel composite board

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Step 1. Make a U-shaped groove on the titanium-pipeline steel composite plate. The titanium layer is on the bottom and the steel layer is on the top. The width of the top of the U-groove is 25mm, and then the U-shaped groove is cleaned. And titanium layer cleaning, the process of steel layer cleaning is: first use the angle grinder with grinding wheel to grind the surface of the steel layer, then use the angle grinder with wire brush to grind the side, and then use the angle grinder with sandpaper type grinding wheel to grind the surface of the steel layer. Grind the groove of the steel layer, and then scrub the polished steel layer with acetone to remove surface oxides; the cleaning process of the titanium layer is as follows: first use an angle grinder equipped with a sandpaper-type grinding wheel to grind the surface, side and groove area of ​​the titanium layer , until the polished area has a silver-white metallic luster, and then use HNO 3 - HF-HCl solution to scru...

Embodiment 2

[0039] Step 1. Make a U-shaped groove on the titanium-pipeline steel composite plate. The titanium layer is on the bottom and the steel layer is on the top. The width of the top of the U-groove is 25mm, and then the U-shaped groove is cleaned. And titanium layer cleaning, the process of steel layer cleaning is: first use the angle grinder with grinding wheel to grind the surface of the steel layer, then use the angle grinder with wire brush to grind the side, and then use the angle grinder with sandpaper type grinding wheel to grind the surface of the steel layer. Grind the groove of the steel layer, and then scrub the polished steel layer with acetone to remove surface oxides; the cleaning process of the titanium layer is as follows: first use an angle grinder equipped with a sandpaper-type grinding wheel to grind the surface, side and groove area of ​​the titanium layer , until the polished area has a silver-white metallic luster, and then use HNO 3 - HF-HCl solution to scru...

Embodiment 3

[0046] Step 1. Make a U-shaped groove on the titanium-pipeline steel composite plate. The titanium layer is on the bottom and the steel layer is on the top. The width of the top of the U-groove is 25mm, and then the U-shaped groove is cleaned. And titanium layer cleaning, the process of steel layer cleaning is: first use the angle grinder with grinding wheel to grind the surface of the steel layer, then use the angle grinder with wire brush to grind the side, and then use the angle grinder with sandpaper type grinding wheel to grind the surface of the steel layer. Grind the groove of the steel layer, and then scrub the polished steel layer with acetone to remove surface oxides; the cleaning process of the titanium layer is as follows: first use an angle grinder equipped with a sandpaper-type grinding wheel to grind the surface, side and groove area of ​​the titanium layer , until the polished area has a silver-white metallic luster, and then use HNO 3 - HF-HCl solution to scru...

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Abstract

The invention discloses a welding material and a welding method for welding a transition layer of a Ti-pipeline steel composite board. The welding material comprises a near-Ti-layer welding material and a near-steel-layer welding material, wherein the near-Ti-layer welding material comprises the components as follows: 52-58% of Ni, smaller than or equal to 0.04% of C, smaller than or equal to 0.007% of N, smaller than or equal to 0.035% of O, smaller than or equal to 0.001% of H and the balance of Ti; and the near-steel-layer welding material comprises the components as follows: 3.15-3.35% of Mn, 18-27% of Cr, 0.01-0.015% of Cu, 0.35-0.55% of Ti, 0.03-0.04% of Co, 1.8-2.0% of Nb, 0.2-0.6% of Ta, smaller than or equal to 0.02% of C, smaller than or equal to 0.025% of Si, smaller than or equal to 0.002% of P, smaller than or equal to 0.002% of S, smaller than or equal to 0.75% of Fe and the balance of Ni. According to the welding material and the welding method, the fusion welding butt joint of the Ti-pipeline steel composite board is realized, a welded joint has excellent obdurability, and the welding efficiency is high.

Description

technical field [0001] The invention belongs to the technical field of metal material welding, and relates to a welding material for welding a transition layer of a titanium-pipeline steel composite plate, and also relates to a method for welding the transition layer of a titanium-pipeline steel composite plate with the welding material. Background technique [0002] Titanium-pipeline steel explosive rolling composite plate is a new type of bimetallic composite material, which combines the advantages of titanium and steel. It not only has the excellent corrosion resistance of titanium, but also has the high strength and toughness of pipeline steel. Applying the composite plate to oil and gas transportation pipelines not only solves the problem that a single steel is easily corroded, but also solves the problem of high cost of using a single corrosion-resistant material. However, due to the large difference in the physical and chemical properties of Ti and Fe elements, if the...

Claims

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Application Information

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IPC IPC(8): B23K35/30B23K31/02
CPCB23K9/16B23K9/235B23K35/3033B23K2101/185
Inventor 张敏井强吴伟刚史倩茹汪强褚巧玲李继红
Owner XIAN UNIV OF TECH
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