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Stainless Stock Pot: Deep Drawn with a Bonded Base
A stock pot is deeper than it is wide, so it is deep drawn: a stainless steel blank is pushed into a die by a punch, with a blank holder to stop wrinkles, and redrawn through further dies until it is deep enough. Stainless spreads heat poorly, so many pots get an aluminium disc on the base: the disc and a thin stainless cap are tacked in place by resistance welding, heated (about 450–520 °C for aluminium) and bonded to the bottom in one blow of an impact press, around 5,000 psi in one patent. The handles are then riveted on, or sometimes spot-welded.
高级
Factory process
说明
1
1
Draw the body
Draw the body
Clamp a stainless blank under the blank holder and draw it into the die with the punch; redraw through further dies to the full depth.
此步骤所需材料：
不锈钢板1 个所需工具：
深拉伸压力机2
2
Fix the base layers
Fix the base layers
Clean the parts, centre an aluminium disc and a stainless cap on the bottom, and tack them by resistance welding.
此步骤所需材料：
铝板1 个不锈钢板1 个所需工具：
电阻点焊机3
3
Heat and bond
Heat and bond
Heat the base by induction and bond the layers to the bottom in one blow of the impact press.
所需工具：
感应加热器
冲击复合压力机4
4
Handles
Handles
Rivet the handles to the side wall.
此步骤所需材料：
锅具手柄2 个
钢铆钉6 个
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