Method for manufacturing duplex stainless steel middle assembly plate frame of chemical tanker

Abstract

The invention discloses a method for manufacturing a duplex stainless steel middle assembly plate frame of a chemical tanker. The method comprises the following steps: S1, the fabrication of a specialtire frame for duplex stainless steel spliced plates, S2, the splicing of the duplex stainless steel plates; S3, the fabrication of the duplex stainless steel middle assembly tire frame; and S4, thefabrication of the duplex stainless steel middle assembly. The method uses a special duplex stainless steel spliced plate tire frame, ensures the precision of the spliced plates, reduces the consumption of the tire frame material, and reduces the mechanical damage to the surface of the duplex stainless steel plate. In the process of splicing the duplex stainless steel plate, a forced weight restrained deformation method is provided so as to reduce the welding deformation during the splicing process. The method utilizes a dummy compartment to control the assembly precision of flat-bulb steel, and provides a flat-bulb steel and duplex stainless steel welding sequence method so as to avoid a large workload in a subsequent precision correction process and shorten a product construction period.

Description

technical field [0001] The invention belongs to the field of shipbuilding, and in particular relates to a method for manufacturing a duplex stainless steel intermediate frame for a chemical tanker. Background technique [0002] Duplex stainless steel chemical tanker is a high-tech ship in the chemical tanker field, and chemical tanker using duplex stainless steel is the development direction of chemical tanker in the future. Due to the large linear expansion coefficient of duplex stainless steel, the welding stress and deformation are relatively large. At present, in the manufacturing process of conventional duplex stainless steel, a large number of reinforcements are used to control its welding deformation, and in the jointing and subsequent The deformation cannot be effectively controlled during the welding process of the spherical flat steel and the two-way stainless steel plate. Instead, a lot of manpower and material resources are invested in the subsequent correction p...

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Problems solved by technology

[0005] Aiming at the problems existing in the prior art, the present invention provides a method for manufacturing the duplex stainless steel mid-assemblage of the chemical tanker, which overcomes the problems in the prior art that there are too many process reinforcements, and the surface of the parent material is easily affected by the demolition process of the process parts. The damage caused by welding, welding deformation is large, and the problem that affects the ship construction cycle

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