Natural molding method: Natural molding method tseem hu ua cov txheej txheem rau cov menyuam txoj kev (CFE). Cov yam ntxwv ntawm txoj kev molding no yog hais tias nyob rau hauv tus txheej txheem ntawm kev tsim, cov yob pawg yog configured raws li ntsug daim ntawv cog lus rau kev tswj ntawm ntug extension. Nyob rau tib lub sijhawm, cov pab pawg yob raug txwv los ntawm sab nraud.
Extend the edge as a compressed deformation form to absorb, so that the forming process of the tanded steel is close to the forming method of natural bending shape. Therefore, it is a forming method that can prevent the edge extension and absorb marginal extension, which is suitable for the inhabitant medium -caliber thin wall tube (D>400 mm).
