304 Stainless Steel Stub Ends

The forming method of stainless steel flanging flange is called flanging, which uses the function of die to form a straight wall or flange with a certain angle along the closed or unclosed curve edge on the plane part or curved surface part of the blank. Flanging is a kind of stamping process. There are many kinds of flanging and different classification methods. According to the deformation properties, it can be divided into elongation flanging and compression flanging.

One advantage of stainless steel flange is its corrosion resistance, which is good in all kinds of pipes. Because stainless steel can passivate with oxidant and form a tough and dense chromium rich oxide protective film Cr2O3 on the surface, which can effectively prevent the further oxidation reaction. The passivation ability of other metal pipes, such as galvanized water pipe and copper pipe, is very small, which is the key reason why the corrosion resistance of copper pipe of galvanized pipe is far lower than that of stainless steel pipe.

Stainless steel flanging flange is a stamping method that turns the outer edge or hole edge of blank or semi-finished product into a vertical edge along a certain curve. When there is a straight line along the flanging line, the flanging deformation will change into bending, so it can also be said that bending is a special form of flanging. However, the deformation of the blank during bending is only limited to the fillet part of the bending curve, while the fillet part and edge part of the blank during flanging are deformation areas, so flanging deformation is much more complex than bending deformation.

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According to the nature of deformation, stainless steel flanging can be divided into elongation stainless steel flanging and compression stainless steel flanging. The common feature of elongation stainless steel flanging is that the deformation area of the blank produces tangential elongation deformation under the action of tangential tensile stress, and the ultimate deformation degree is mainly limited by the cracking of the deformation area. The common feature of compression stainless steel flanging is that except for the bending deformation of the metal near the fillet radius at the root of the vertical edge, the rest of the deformation area of the blank produces tangential compression deformation under the action of tangential compressive stress, Its deformation characteristics belong to compression deformation, and the stress state and deformation characteristics are the same as those of deep drawing. The limit deformation degree is mainly limited by the instability and wrinkling in the blank deformation area. Stainless steel flanging belongs to compression stainless steel flanging.