The thickness of Sheet Metal Processing materials in Shenyang is 1.7 times. Sheet metal factories generally use 1.7 times the thickness of the material as the bending reducing material. Calculating the elongation of the plate is simple. If the processing accuracy requirements are not high, thin plates can be directly used. The raw materials are different, and the thickness of aluminum plate raw materials can be calculated according to 1.6. The thickness of stainless steel materials can reach 1.8 times.

Zigzag reduction = multiple of material thickness + 1/3.

This formula is the calculation of the tortuosity of the plate during the long-term processing of the plate. This is also an approximate calculation method. Its theoretical explanation is: Stretch = length a + b-2 times material thickness + thickness elongation coefficient 1/3. The length of the short straight line is calculated earlier, plus the tensile coefficient. It is generally thought that the plate will be stretched when it is bent.

Bending reduction = material thickness - (0.72t-0.075V-0.01), the calculation method has been improved. The feature of this method is that the influence of the die width on the tortuous reasoning is considered. The experimental data is based on the carbon plate experiment, and the experimental accuracy of other materials is still unclear. The tortuous elongation of the aluminum plate under the condition of 4 times the material thickness and 4 times the groove width is calculated. The obtained results are still appropriately accurate. The expansion calculation of the carbon sheet is very accurate.

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