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Fully automatic 9% ni steel plate vertical butt joint fcaw single side welding double side forming process

A single-sided welding double-sided, forming process technology, used in welding/welding/cutting items, welding media, manufacturing tools, etc., can solve the problems of non-penetration of welds, low welding efficiency, and waste of welding materials.

Active Publication Date: 2017-09-26
SHANGHAI SHIPBUILDING TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a kind of improved full-automatic 9% Ni steel plate vertical butt joint FCAW double-sided forming process, which can overcome the weld infiltration, poor weld formation, welding Some shortcomings of material waste and low welding efficiency

Method used

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  • Fully automatic 9% ni steel plate vertical butt joint fcaw single side welding double side forming process
  • Fully automatic 9% ni steel plate vertical butt joint fcaw single side welding double side forming process
  • Fully automatic 9% ni steel plate vertical butt joint fcaw single side welding double side forming process

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Embodiment 1

[0019] Such as figure 1 As shown, the fully automatic 9% Ni steel plate vertical butt joint FCAW single-sided welding double-sided forming process method, the thickness of the 9% Ni steel plate is 15mm:

[0020] 1) The single side of the steel plate is beveled at 30°, leaving a blunt edge thickness of 0-1mm;

[0021] 2) There is a gap size of 3-3.5mm when the steel plate group is assembled by spot welding;

[0022] 3) Add ceramic lining and anti-deformation code plate on the reverse side.

[0023] The machining error of blunt edge thickness of 9% Ni steel thin plate shall not exceed 0.5mm, and the error of initial gap size shall not exceed 0.5mm. The forming groove of the ceramic liner is U-shaped, and the depth of the forming groove does not exceed 2mm; install the anti-deformation code plate on the basis of meeting the assembly clearance, and ensure that the root gap is opposite to the liner forming groove. The spot welding assembly of the steel plate group is also comple...

Embodiment 2

[0033] Fully automatic 9% Ni steel plate vertical butt joint FCAW single-sided welding double-sided forming process method, the thickness of the 9% Ni steel plate is 18mm:

[0034] 1) The unilateral bevel of the steel plate is 33°, leaving a blunt edge thickness of 0.6mm;

[0035] 2) There is a gap of 3.3 mm when the steel plate is assembled by spot welding;

[0036] 3) Add ceramic lining and anti-deformation code plate on the reverse side.

[0037] Adopt welding robot, use flux-cored wire gas shielded welding, carry out "rectangular" track swing welding in Y-shaped groove weld bead, and do not stop in the middle of each weld bead. When welding, the dry elongation of welding wire is kept between 14mm , The welding wire is in the center of each weld bead and the alignment is ensured. The distance between the end of the welding wire and the arc starting point is 3mm; the 9% Ni steel plate is not preheated before welding, and the interlayer temperature of each weld bead is contr...

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Abstract

The invention discloses a full-automatic 9% Ni steel medium-thin plate vertical butt joint FCAW one-side welding and double-side molding technological method. The method is characterized in that a, corresponding grooves are formed in one sides of two 9% Ni steel medium-thin plates needing to be welded, and truncated edge thickness is reserved; b, a clearance is reserved when counter point welding assembling is carried out on the two 9% Ni steel medium-thin plates needing to be welded, thus a Y-type groove is formed, and a ceramic liner and a reversible deformation clamp plate are added, corresponding to the root clearance, to the back faces of the 9% Ni steel medium-thin plates; c, a welding robot is adopted, flux-cored wire gas protection welding is used for carrying out rectangular track swing welding in welding beads of the Y-type groove, and the process does not stay in the middles of all the welding beads; and d, the 9% Ni steel medium-thin plates are not pre-heated before being welded, and the interpass temperature of all the welding beads is controlled below 150 DEG C. It can be guaranteed that according to steel medium-thin plate vertical butt joint under the implementation of full-automatic FCAW, all weld joints achieve full penetration, the thickness of all the welding beads is proper, and the weld joints on the front face and the back face are molded well. Welding materials are saved, and the aim of efficient welding is achieved.

Description

technical field [0001] The invention relates to the technical field of welding technology, in particular to a fully automatic 9% Ni steel thin plate vertical butt joint FCAW single-side welding and double-side forming process. Background technique [0002] Domestic welding of low-temperature steels such as 9% Ni is mostly manual arc welding, especially the weld in the vertical butt joint position. Due to the limitation of welding materials and welding line energy, it has never been seen that automatic welding is used in the vertical butt joint position. Research reports on welding. The traditional manual welding is not only cumbersome to operate, but also has the disadvantages of uneven product quality and poor stability due to manual operation, and there are also some potential safety hazards. [0003] If automatic welding is used, the first pass welding is very important for the single-side welding and double-side forming process. The difficulty lies in not only preventi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K9/035B23K9/025B23K9/16B23K9/235B23K33/00B23K35/38B23K9/022B23K101/18B23K103/04
CPCB23K9/0035B23K9/022B23K9/025B23K9/035B23K9/164B23K9/235B23K33/004B23K35/383B23K2101/18B23K2103/04
Inventor 吴文烈朱国斌郑惠锦兰玲甘露阎璐宋金英
Owner SHANGHAI SHIPBUILDING TECH RES INST