Forming Process of Stainless Steel Compression Pipe Fittings

Abstract

The invention discloses a stainless steel clamping pressing pipe fitting forming process. The process comprises a forming stage and a shaping stage. A hydraulic shape expansion process is adopted in the forming stage, upper and lower molds and left and right push heads are adopted in the hydraulic shape expansion process for fixing a pipe blank in a forming cavity, high pressure oil is input through oil conveying pipelines in the left and right push heads, and the pipe blank generates radial expansion under liquid pressure of the hydraulic oil. At the shaping stage, a rolling process is adopted, and a convex roller and a groove roller are adopted to give pressure to the pipe axis direction of the pipe blank and meanwhile carry out rolling machining. The efficient hydraulic shape expansionprocess is adopted at the forming stage, the rolling process is adopted in the shaping stage, the equipment cost is effectively reduced while forming precision is ensured, and the hydraulic shape expansion equipment pressure does not exceed 30 MPa.

Description

technical field [0001] The invention relates to a forming process of a stainless steel pressing pipe fitting. Background technique [0002] Stainless steel materials have outstanding corrosion resistance and good mechanical properties, and can be made into thin-walled pipes to reduce costs. Therefore, many countries have promoted the use of thin-walled stainless steel piping systems in various industries. For thin-walled stainless steel pipes, due to their small wall thickness (generally below 1.5mm), the general threaded connection method is no longer applicable. Stainless steel clamping pipe fittings have the advantages of quick and easy installation, stable pressure resistance, corrosion resistance, and no pollution to fluid media. They are ideal connectors for thin-walled stainless steel pipes. Stainless steel compression fittings have been widely used in Sweden, Germany, Japan and other developed countries. my country also issued industry standards in 2001 to promote ...

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