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Compound pipe production method based on spraying technology

A technology for composite pipes and composite plates, which is used in manufacturing tools, welding equipment, arc welding equipment, etc., can solve the problems of poor weld quality and performance, low welding efficiency, etc., and achieves low welding heat input, strong practicability, and application wide range of effects

Active Publication Date: 2021-10-01
SHAANXI RAILWAY INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of this invention is to provide a method for preparing composite pipes based on spraying technology, which solves the problems of low welding efficiency, weld quality and performance in the prior art bad question

Method used

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  • Compound pipe production method based on spraying technology
  • Compound pipe production method based on spraying technology
  • Compound pipe production method based on spraying technology

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Experimental program
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Embodiment

[0036] see figure 1 , the TA1 / X65 pure titanium / pipeline steel layered structure composite plate with a wall thickness of 20mm prepared by the technology of "billet formation + explosive welding + controlled rolling and controlled cooling" was used as the experimental raw material plate, the thickness of the TA1 pure titanium layer was 3mm, and the X65 pipeline The thickness of the steel layer is 17mm. After cleaning the debris, rust and hard blocks on both sides of the plate, the Φ610×20mm TA1 / X65 pure titanium / pipeline steel layered structure composite pipe is manufactured. The specific steps are as follows:

[0037] Step 1: Carry out "U+I" groove milling on both longitudinal sides of the TA1 / X65 pure titanium / pipeline steel layered structure composite pipe, and clean the surface again within the range of 10-20mm on both sides of the groove, and process the groove The specific parameters are: "U"-shaped groove is located on the side of the pure titanium layer, the depth is 4...

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Abstract

The invention discloses a compound pipe production method based on a spraying technology. The compound pipe production method based on the spraying technology comprises the following steps: firstly, producing a pure titanium or titanium alloy material and a carbon steel material into a bimetal layered structure compound plate with a required specification in a mode of assembling, explosive welding and continuous controlled rolling and controlled cooling; then designing and processing special grooves; and finally, conducting welding production of a bimetal compound pipe by adopting a laser and cold metal transition compound welding technology, the spraying technology and a pulse TIG welding method. According to the compound pipe production method based on the spraying technology, welding heat input is small, a transition layer can well prevent mutual dissolution of Ti and Fe and mutual dissolution of Ti and C, and generation of brittle hard intermetallic compounds is effectively avoided, so that the comprehensive mechanical performance of a pipe welding seam is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of composite pipe preparation, and relates to a method for preparing a composite pipe based on spraying technology. Background technique [0002] Pure titanium or titanium alloy / carbon steel layered structure composite pipe can significantly reduce the cost of pipeline construction, has excellent corrosion resistance, can serve safely in most acidic environments, and can meet the storage and transportation requirements of corrosive media. It maximizes the complementary advantages of materials, and has huge market value and economic benefits in various fields. [0003] Since the marine environment and seawater have no corrosive effect on pure titanium or titanium alloy materials, pure titanium or titanium alloy / carbon steel layered structure composite pipes and their deep processing corrosion-resistant equipment are widely used in marine engineering, ship production, marine engineering equipment and other fie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/16B23K26/12B23K26/346B23K26/70B23K31/02B23P15/00
CPCB23P15/00B23K26/346B23K31/02B23K26/70B23K26/12B23K9/16
Inventor 杨军南黄河
Owner SHAANXI RAILWAY INST
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