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Stainless steel flange forging operation

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Stainless steel flange forging operation

Release date:2019-03-05 Author: Click:

Stainless steel flange forging operation, ring forgings manufacturers to introduce

(1) the production workshop shall select suitable raw materials for flanges according to the process requirements, and check the surface of the materials before heating. If there are visible cracks, folds, inclusions and other defects, the flanges must be removed by peeling or other eradication methods before being allowed to be heated in the furnace.

(2) the principle of heavy blow shall be followed after the plasticity is improved. And a square polygonal a square way of forging. The surface cracks or other defects found in the process of flange forging should be reported to the quality inspector and technologist in time for reasonable removal and treatment.

When upsetting, the chamfering or circumferential edge of the upper and lower ends shall be first pressed, and then the flanges shall be leveled and pasted with a heavy blow. When the section of blank is large, "pressing iron" can be used for flattening and upsetting.

In the forging process, for the punching process, should try to use small head punching, after reaming. The initial punching diameter is 1/2.5 -- 1/3 of the nominal aperture. The front end face of the punching is flat. The center of the initial punch is used for embossing. Flange forging process to card frequency and strictly control the forging temperature in the specified range.

(3) select the appropriate forging ratio, generally choose 2, the tonnage of the forging hammer is 1/3 larger than that of ordinary steel, overcome the high deformation resistance under the hot state, to refine the grain through forging.

(4) air cooling is adopted after flange forging to completely dissolve the carbides precipitated from the forging during cold and deformation into austenite, improve the corrosion resistance and conduct solid solution treatment.


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