A kind of pipe fitting processing technology

Abstract

The invention discloses a processing technology for pipe fittings, which is used to manufacture three-way pipe fittings on aerial drones, comprising the following steps: a) preforming, b) annealing treatment, c) cold extrusion, d) shaping, e) surface polishing Shot processing; the present invention adopts advanced hot die forging and cold extrusion processing, which has high dimensional accuracy, small surface roughness, good internal metal fluidity, and can form a reasonable linear distribution of fiber flow. Its tensile strength, wear resistance, mechanical The performance is greatly improved; the seamless tee fittings made can effectively prevent the occurrence of air leakage and liquid leakage, with high safety factor and good use effect, which can ensure that the hydraulic oil circuit does not leak; its tolerance and surface roughness can reach Aviation industry standards, and save 40% of raw materials, effectively reduce production costs, can be used in supporting my country's unmanned aircraft supporting, with advanced technology, has market prospects.

Description

technical field [0001] The invention relates to the technical field of pipe fitting processing, especially the technical field of pipe fitting processing technology. Background technique [0002] Pipe fittings are a general term for components that play the roles of connection, control, direction change, diversion, sealing, support, etc. in the pipeline system. They are an important part of connecting pipes to pipelines. , flange fittings and welded fittings four categories. Pipe fittings are mostly made of the same material as pipes, including elbows, flanges, tees, crosses, and reducers. Pipe fittings are generally used to transmit fluids. In order to prevent fluid leakage, pipe fittings are generally required to be seamlessly connected, and the connected pipe fittings are required to have a size that matches each other, and the pipe fittings are connected by a certain combination method. [0003] In the aviation manufacturing industry, there are a large number of oil an...

AI Technical Summary

Problems solved by technology

[0004] Tee fittings can play an important role in diverting flow, changing the direction of liquid flow, and relieving local stress in the pipeline system in oil and gas pipeline systems. At present, hydraulic bulging is a common method for manufacturing tee fittings, but in the bulging process, the main There are the following defects: (1) The middle part of the main pipe of the multi-way pipe fitting is seriously thickened

(2) The height of the branch pipe of the multi-way pipe fitting is not enough and excessive thinning occurs

In addition, the common method of manufacturing tee pipe fittings is the casting method, and the disadvantage of using the casting method to manufacture tee pipe fittings is that it is unfavorable for welding and cannot meet the welding occasions.

For pressure-bearing pipeline components, air leakage and liquid leakage caused by welding and casting processes occur from time to time, causing many uncertain safety hazards