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A production process for double layer stainless steel cup, which mainly comprises coating oil on a steel plate with appropriate area, feeding the plate to a press module, undergoing first drawing to enable the steel plate forming a semi-product column with appropriate depth and width, inserting the semi-product on another appropriate module to undergo second drawing so as to extend the depth of the semi-product, removing the semi-product and inserting the semi-product on a module designed according to the dimension of the cup to undergo third drawing so as to extend the depth of the semi-product to the desired depth, reversing and inserting the third drawn semi-product on a module with an area slightly smaller than the third drawing module to undergo fourth drawing (i.e., reverse drawing) in order to reverse the semi-product from inside to the outside to form the cup, reversely inserting the cup on a module slightly smaller than the fourth module to impress and draw the cup inward to obtain the double layer cup.
TW83107031A1994-08-011994-08-01Production process for double layer stainless steel cup
TW241200B
(en)