Metal Sheet Bending Knowledge
How To Bend Thick Sheet Metal Material
01. In terms of specification, the thicker the plate is, the greater the bending force is required. Therefore, when selecting bending equipment, it is necessary to improve the bending force. Because the tensile strength of stainless steel plate is higher, it is necessary to have large deformation force.
02. The higher the yield strength of metal materials, the stronger the extension recovery ability, so the smaller the angle to be restrained, such as the bending angle of 90 °, and the repairability of stainless steel plate during bending will be greater than that of carbon steel, so the angle to be restrained is smaller than that of carbon steel.
03. When the thickness and bending radius correspond to the design drawing, the bent workpiece needs to meet the precise provisions of the design scheme, measure according to the calculation formula of the operator, and simply calculate whether there is any problem in the whole process.
Metal Profile Bending Procedures Design
Bending process to be considered in sheet metal design: the design needs to consider which are processed before bending and which are processed after bending.
Considering that during the manufacturing process, some holes must be bent first and then processed: round holes, square holes, waist round holes, threads, etc. close to the bending edge need to be processed during blanking. If blanking is directly unfolded, it cannot be completed in subsequent processing. The waist circle will pull holes during bending, and the threaded holes cannot be tapped with common taps. The design needs to consider which can be formed by sheet metal and which can not be formed by sheet metal.
How To Confirm Bending Radius?
The bending radius of sheet metal processing is related to the material thickness and the width of the bending notch. The simple, convenient and rough method is: when the plate thickness is not more than 6mm, the bending radius in the plate can directly take the plate thickness as the radius during bending. When the plate thickness is more than 6mm and less than 12mm, the bending radius in the plate is generally 1.25 to 1.5 times of the plate thickness, and when the plate thickness is not less than 12mm, The bending radius in the plate is generally 2 to 3 times the plate thickness.
Experience in actual sheet metal processing shows that when the plate thickness is generally no more than 6mm, the inner radius of sheet metal bending can directly use the plate thickness as the radius. When the bending radius is r = 0.5, the general sheet metal thickness t is equal to 0.5mm. If the radius size larger or smaller than the plate thickness is required, it needs to be processed with a special die. When the sheet metal drawing requires the sheet metal to be bent by 90 ° and the bending radius is particularly small, the sheet metal should be grooved first and then bent. It can also process special bending machine molds, upper and lower molds.
