Stainless steel clamping pressing pipe fitting forming process
A technology of stainless steel clamping and pressing tubes, which is applied in the field of stainless steel clamping and pressing pipe fittings forming technology, which can solve the problems of inapplicability and small wall thickness, and achieve the effects of reducing energy consumption and equipment costs, reducing equipment pressure, and ensuring performance
Active Publication Date: 2020-02-14
江苏银羊不锈钢管业有限公司
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Problems solved by technology
For thin-wall stainless steel pipes, due to their small wall thickness (generally below 1.5mm), the general threaded connection method is no longer applicable.
Method used
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Embodiment Construction
[0016] The forming process of the stainless steel pressing pipe fittings provided by the present invention will be further described below in conjunction with specific embodiments.
[0017] The forming of stainless steel pressing pipe fittings includes the following steps: blanking, deburring, extrusion forming, annealing, pickling passivation, and inspection.
[0018] Among them, the annealing is carried out in the ammonia decomposition crawler solid melting furnace, and the annealing is carried out at 1100 ° C for 90 minutes to eliminate the stress and not change the elongation.
[0019] The preparation process of the stainless steel compression pipe fittings of the present invention includes a forming stage and a shaping stage, and the forming stage adopts a hydraulic bulging process, wherein,
[0020] see figure 1 , the hydraulic bulging process uses the upper die 3, the lower die 5, the left push head 1, and the right push head 4 to fix the tube blank in the forming cavi...
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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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Patent Timeline
Login to View More IPC IPC(8): B21D26/033B21D17/04
CPCB21D17/04B21D26/033
Inventor徐晓东赵洪强周淑云陆仁兴王新伟张立峰张忠明陆博凡沈科计龙余
Owner江苏银羊不锈钢管业有限公司