Method for preparing 316 stainless steel complex thin-wall pipeline through selective laser melting forming technology

Abstract

The invention provides a method for preparing a 316 stainless steel complex thin-wall pipeline through the selective laser melting forming technology. The method comprises the steps that firstly, a three-dimensional digital model of the complex thin-wall pipeline is constructed; secondly, the three-dimensional digital model is repaired through three-dimensional repairing software; and thirdly, the repaired three-dimensional digital model is sliced through slicing software and converted into two-dimensional slice information, and a machining program file is generated. The method has the beneficial effects that firstly, the time for forming the complex thin-wall pipeline is short through the selective laser melting forming technology, procedures are reduced, and the manufacturing period is shortened; secondly, the quality of the complex thin-wall pipeline formed through the selective laser melting forming technology is high, consistency between the complex thin-wall pipeline and the digital model is good, and the qualification rate is high; and thirdly, the 316 stainless steel complex thin-wall pipeline formed through the method is uniform in inner structure, good in surface quality and excellent in mechanical performance.

Description

technical field [0001] The invention relates to a method for preparing 316 stainless steel complex and thin-walled pipelines by laser selective melting forming technology, which belongs to the technical field of laser selective forming. Background technique [0002] 316 stainless steel is an austenitic stainless steel with good formability, simple preparation, wide sources and low cost. It is characterized by good mechanical properties, high structural strength, good corrosion resistance and atmospheric corrosion resistance. There are a wide range of applications. 316 stainless steel is suitable for the manufacture of complex structural parts, such as complex thin-walled pipelines and other complex structural parts. [0003] Traditional technology is used to manufacture 316 stainless steel complex thin-walled pipelines. The main steps are blanking, manual pipe bending, pre-weld trimming, welding assembly, welding, non-destructive testing, repairing, and weld correction. The...

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Problems solved by technology

[0003] Traditional technology is used to manufacture 316 stainless steel complex thin-walled pipelines. The main steps are blanking, manual pipe bending, pre-weld trimming, welding assembly, welding, non-destructive testing, repair and weld correction. The entire manufacturing cycle is very long; Manual pipe bending has poor consistency with the digital model, and the pass rate is extremely low, which affects the product development cycle and increases the development cost