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A Processing Technology of Submerged Arc Welded Straight Seam Steel Pipe with Shock Absorbing Structure

A technology of shock absorption and processing technology, applied in the field of straight seam submerged arc welded steel pipes, it can solve the problems of comparable impact resistance of welds, and achieve the effects of avoiding pollution, reducing structural damage and stabilizing shock absorption performance.

Active Publication Date: 2019-07-16
HEFEI ZIKING PIPE INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although the submerged arc welded straight seam steel pipe is welded with filler and the particle protects the flux submerged arc, the impact resistance of the weld is still not comparable to that of the seamless steel pipe.

Method used

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  • A Processing Technology of Submerged Arc Welded Straight Seam Steel Pipe with Shock Absorbing Structure
  • A Processing Technology of Submerged Arc Welded Straight Seam Steel Pipe with Shock Absorbing Structure

Examples

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Effect test

Embodiment 1

[0024] (1) Processing of submerged arc welded straight seam steel pipes: select carbon steel steel plate as the base layer and metal steel plate as the cladding layer. The bimetallic composite steel plate is made by hot rolling process, and is milled, pre-curved, JCO formed, and seamed Pre-welding, submerged arc internal welding base carbon steel steel plate, submerged arc external welding cladding metal steel plate, ultrasonic inspection, X-ray inspection, finishing treatment, namely submerged arc welding longitudinal seam steel pipe;

[0025] (2) Processing of impact absorbing material: heat 40kg magnesium ingot to 645-650℃ for heat preservation. When the magnesium melting rate reaches 50%, use permanent magnetic mixer to start stirring. After the magnesium ingot is completely melted, add 25kg aluminum ingot and continue heating to 660 -665℃ heat preservation and stirring, after the aluminum ingot is completely melted, add 5kg calcined kaolin, 5kg molecular sieve activation powd...

Embodiment 2

[0028] (1) Processing of submerged arc welded straight seam steel pipes: select carbon steel steel plate as the base layer and metal steel plate as the cladding layer. The bimetallic composite steel plate is made by hot rolling process, and is milled, pre-curved, JCO formed, and seamed Pre-welding, submerged arc internal welding base carbon steel steel plate, submerged arc external welding cladding metal steel plate, ultrasonic inspection, X-ray inspection, finishing treatment, namely submerged arc welding longitudinal seam steel pipe;

[0029] (2) Processing of impact absorbing material: heat 40kg magnesium ingot to 645-650℃ for heat preservation. When the magnesium melting rate reaches 50%, use permanent magnetic mixer to start stirring. After the magnesium ingot is completely melted, add 25kg aluminum ingot and continue heating to 660 -665℃ heat preservation and stirring, after the aluminum ingot is completely melted, add 5kg calcined kaolin, 5kg molecular sieve activation powd...

Embodiment 3

[0032] (1) Processing of submerged arc welded straight seam steel pipes: select carbon steel steel plate as the base layer and metal steel plate as the cladding layer. The bimetallic composite steel plate is made by hot rolling process, and is milled, pre-curved, JCO formed, and seamed Pre-welding, submerged arc internal welding base carbon steel steel plate, submerged arc external welding cladding metal steel plate, ultrasonic inspection, X-ray inspection, finishing treatment, namely submerged arc welding longitudinal seam steel pipe;

[0033] (2) Processing of impact absorbing material: heat 40kg magnesium ingot to 645-650℃ for heat preservation. When the magnesium melting rate reaches 50%, use permanent magnetic mixer to start stirring. After the magnesium ingot is completely melted, add 25kg aluminum ingot and continue heating to 660 -665℃ heat preservation and stirring, after the aluminum ingot is completely melted, add 5kg calcined kaolin, 5kg molecular sieve activation powd...

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Abstract

The invention discloses a processing technology of a submerged arc welded straight seam steel pipe with an impact absorption structure, relates to the technical field of straight seam submerged arc welded steel pipes, and comprises the following steps: (1) processing the submerged arc welded straight seam steel pipe, (2) impacting Processing of absorbent materials, (3) Forming of impact-absorbing structures. In the present invention, the shock absorbing material is coated on the submerged arc welded straight seam steel pipe to form a shock absorbing structure, thereby endowing the submerged arc welded straight seam steel pipe with excellent shock absorption performance; at the same time, the amount of metal magnesium and aluminum is reduced, and the cost is reduced. At the same time, the shock absorbing performance of the prepared shock absorbing material is enhanced.

Description

[0001] Technical field: [0002] The invention relates to the technical field of straight seam submerged arc welded steel pipes, in particular to a processing technology of a submerged arc welded straight seam steel pipe with an impact absorption structure. [0003] Background technique: [0004] The submerged arc welding straight seam steel pipe adopts the submerged arc welding technology, which uses filler welding and particle-protected flux submerged arc, and the production caliber can reach 1500mm. LSAW is the abbreviation of submerged arc welded straight seam steel pipe. The production process of submerged arc welded straight seam steel pipe includes JCOE forming technology and coil forming submerged arc welding technology. When the caliber is large, two steel plates can be used for rolling, which will form a double weld phenomenon. [0005] Although the submerged arc welding longitudinal seam steel pipe adopts the method of filler welding and particle protection flux submerged a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21C37/09C22C1/08C22C49/04C22C47/08C22C49/14C22C101/06
CPCC22C1/08C22C47/08C22C49/04C22C49/14B21C37/09C22C1/083
Inventor 彭静吴宏根郑家胜李勇
Owner HEFEI ZIKING PIPE INC
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