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Surfacing method for antiseptic wear-resisting layer of dovetail groove

An anti-corrosion and wear-resistant, dovetail groove technology, applied in the field of surfacing, can solve problems such as difficulty

Active Publication Date: 2013-04-03
BAOSHAN IRON & STEEL CO LTD
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Problems solved by technology

For the production of wear-resistant and anti-corrosion layers on the surface of the dovetail groove on the surface of the tensioning and reducing machine, due to its large area, not only the appropriate surfacing material must be considered to meet the corresponding performance requirements, but also the large-area surfacing welding must be considered for welding deformation. control, it is more difficult

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  • Surfacing method for antiseptic wear-resisting layer of dovetail groove
  • Surfacing method for antiseptic wear-resisting layer of dovetail groove

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Embodiment Construction

[0031] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0032] see figure 2 As shown, the overlay welding method of the dovetail groove anticorrosion wear-resistant layer of the present invention specifically comprises the following steps:

[0033] A. Spot weld two dovetail workpieces back to back to form a symmetrical structure;

[0034] B. Alternately perform segmented interval jump welding on the inclined groove surface and the horizontal groove surface of the upper and lower dovetail groove workpieces;

[0035] C. Perform heat treatment on the dovetail groove workpiece after surfacing to eliminate welding residual stress;

[0036] D. Separate the dovetail groove workpiece welded together at two points, and use a hydraulic press to correct the deformed dovetail groove workpiece;

[0037] E. Rough machining the separated dovetail workpiece.

[0038] see image 3 , Figure ...

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Abstract

The invention discloses a surfacing method for an antiseptic wear-resisting layer of a dovetail groove. According to the method, two dovetail groove workpieces are spot-welded back to back, slant groove surfaces and horizontal groove surfaces of the upper dovetail groove workpiece and the lower dovetail groove workpiece are alternately skip-welded sectionally at intervals by ER410NiMoTi surfacing material, welding residual stress is eliminated through heat treatment, and finally the two dovetail groove workpieces are separated, corrected and roughly machined. According to the surfacing method disclosed by the invention, welding deformation can be effectively avoided, and the formed surfacing layer can improve the antiseptic wear-resisting performance of the dovetail groove.

Description

technical field [0001] The invention relates to surfacing welding technology, more specifically, to a surfacing welding method for an anti-corrosion and wear-resistant layer of a dovetail groove. Background technique [0002] Tensioning and reducing machines are important production equipment for steel pipe manufacturers. At present, generally imported products, after a long period of use, the surface of the base, especially the dovetail groove on the surface, is severely worn and corroded, and cannot be used continuously. After the coordination of the equipment management personnel and the production site, it was decided to make a new sheet reducer and improve its service life. [0003] See figure 1 as shown, figure 1 It is the test value table of the chemical composition of the tensioning and reducing machine base. It can be seen that the chemical composition of the imported tensioning and reducing machine base is close to that of Q235 steel. Q235 steel is a conventiona...

Claims

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Application Information

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IPC IPC(8): B23K9/04B23K9/16C21D9/50
Inventor 丁海绍徐雪飞孔利明卢江海
Owner BAOSHAN IRON & STEEL CO LTD
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