Environment-friendly welding process for production of motorized cargo ship body

Abstract

The invention relates to an environment-friendly welding process for production of a motorized cargo ship body. The environment-friendly welding process comprises the specific steps that S1, two motorized cargo ship plate bodies are placed on a supporting base plate structure; s2, a plate body clamping assembly is positioned; s3, a friction welding structure is positioned; and S4, the motorized cargo ship plate body and the stop bodies on the two sides are cut and separated through a cutting machine, and the welded motorized cargo ship plate body is discharged. The method has the following advantages that the overall consistency of the weld joint from the starting end to the tail end is guaranteed, and the welding quality and the welding strength are improved.

Description

Technical field: [0001] The invention relates to the field of motor cargo ship hull processing, in particular to an environment-friendly welding process for motor cargo ship hull production. Background technique: [0002] In the process of hull welding of motor cargo ships, submerged arc welding and CO2 semi-automatic welding are usually used to realize the welding between duplex stainless steel and hull structural steel plate. During welding, it is necessary to carry out beveling treatment on the two butted plates, and the groove is opened and processed. The number of times is large, the human resources are spent, the welding has a large heat-affected zone, the mechanical properties and corrosion resistance of the weld joint are reduced, the overall welding efficiency is low, and radiation, flash, smoke, arc or magnetic shock are generated during welding. , It is easy to produce welding defects such as welding cracks, slag inclusions, and pores. [0003] In order to solve ...

AI Technical Summary

Problems solved by technology

[0002] In the hull welding process of motorized cargo ships, submerged arc welding and CO2 semi-automatic welding are usually used to realize the welding between duplex stainless steel and hull structural steel plates. During welding, it is necessary to open grooves for the two butt plates, and the groove opening processing More times, more human resources are spent, and there is a larger heat-affected zone during welding, which reduces the mechanical properties and corrosion resistance of the weld joint, the overall welding efficiency is low, and radiation, flash, smoke, arc or magnetic shock are generated during welding. , easy to produce welding defects such as welding cracks, slag inclusions, and pores

[0003] In order to solve these technical problems, there is usually friction welding welding technology, which has low residual stress, the welding workpiece is not easy to deform, no need to add welding wire, no shielding gas, low cost, safe and pollution-free welding process, no smoke, no radiation, etc., improve welding Environmental protection, however, friction welding has the following defects when welding two spliced ​​plates: the friction welding stirring head is screwed into the weld seam of the two plates from top to bottom, if the friction welding stirring head When the outer side of the welding seam gradually moves into the weld, it is prone to misalignment. Therefore, the starting end and the end end of the friction welding stirring head are both inside the two ends of the welding seam. After welding, due to the retraction of the friction welding stirring head, The keyhole of the friction welding stirring head is left, and the end of the completed weld (keyhole) needs to be repaired. Secondly, the start and end of the weld still need to be filled by other manual welding. Multiple welding filling makes Repeated heating of the welded connection, stress concentration, affects the welding efficiency and welding strength between the two plates

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