This document specifies the technical specification of sheet metal precise cold bending,which consist of general requirements,blank length of bends,precision of bending parts,spring back control,tool design and process procedure.This document is applicable to the process plan of sheet metal precise cold bending carried out on the press.
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This standard specifies the requirements,test methods,inspection rules and delivery conditions for steel precision hot die forgings (hereinafter referred to as “precision hot forgings”).
This standard is applicable to hot die forgings in axisymmetric form with mass lower than 18 kg and outer diameter not larger than 230 mm,which is produced by high precision die,special die set and equipment.
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