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增設強壓功能。即對卸料鑲塊壓料部加厚尺寸(正常的卸料鑲塊厚H 0.03mm)，以增加對凹模側材料的壓力，從而抑制沖切時沖壓件產生翻料、扭曲變形。凸模刃口端部修出斜面或弧形。這是減緩沖裁力的有效方法。減緩沖裁力，即可減輕對凹模側材料的拉伸力，從而達到抑制沖壓件產生翻料、扭曲的效果。

日常模具生產中，應注意維護沖切凸、凹模刃口的鋒利度。當沖切刃口磨損時，材料所受拉應力將增大，從而沖壓件產生翻料、扭曲的趨向加大。

五金沖壓件材料的硬度檢測，其主要目的就是確定購入的金屬板材退火程度是否適于隨后將要進行的沖壓件加工，不同種類的沖壓件加工工藝，需要不同硬度級別的板材。

stamping material hardness testing, the main is to determine whether the purchase of metal sheet annealing is suitable for subsequent stamping parts processing, different types of stamping processing technology, the need for different hardness levels of the plate.

手鋸加工方法

扁鋼的鋸削：在扁鋼鋸口處劃一周圈線，分別從寬面的兩端鋸下，兩鋸縫將要結接時，輕輕敲擊使之斷裂分離。這樣鋸削，而且能較好地防止鋸齒崩缺。反之若從窄面下鋸，非但不經濟，而且只有很少的鋸齒與工件接觸，工件越薄，鋸齒越容易被工件的棱邊鉤住而折斷。

Processing method of hand saw

Sawing of flat steel: a circular line at the cutting edge of flat steel, which is cut down from the two sides of the wide surface. When the two saws will be tied, it will be gently tapped and broken apart. The sawing efficiency is high, and the sawtooth collapse is prevented. On the , if it is sawed under the narrow face, it is not economical, and only a few teeth are touched with the workpiece. The thinner the workpiece is, the more easily the sawtooth is caught and broken by the edges and edges of the workpiece.

槽鋼的鋸削：槽鋼的鋸削與扁鋼一樣，但是要分二次從寬邊面往下鋸，不能在一個面上往下鋸，應盡量做到在長的鋸縫口上起鋸，因此工件必須多次改變夾持的位置。

Channel steel sawing: the channel sawing of the channel steel is the same as that of the flat steel, but it must be sawed down two times from the wide side, and can not be sawed down on one surface, and should be sawed on the long saw mouth as far as  so the  of the clamping must be changed many times.