Quality of sheet stamping performance appraisal method

Refers to the ability to adapt to stamping processing. The study of sheet stamping performance has very important significance. In order to be able to use the most scientific and the most economic and reasonable process of stamping process and technological parameters of producing stamping parts, must be on the performance of the sheet of processing as the object of it is very clear, is it possible to make full use of this plate in the processing of potential ability. , on the other hand, in order to be able to according to the characteristics of the shape and size stamping parts and the basic factors, such as forming process correctly and reasonably choose plank, must also be on the sheet stamping performance have a scientific understanding and correct judgment. Assess the performance of sheet metal stamping has a direct test method and indirect method. Physical test is the most direct plate stamping performance assessment method. Using the actual production equipment and mold, in exactly the same conditions and production of performance evaluation of stamping parts, of course can be one of the most reliable results. But, this kind of evaluation method is not universal, not a universal standard for information exchange between industries. Simulation test is exist in the production of the stamping methods are summarized with the simple treatment, eliminate many complicated factors, using the axisymmetric simplifies the method of forming in the guarantee test sheet properties of deformation and stress state are the same as the actual stamping stamping performance evaluation work conditions. In order to guarantee the reliability of the simulation test results and generality, provides for Shared out specific about the test tool geometric shapes and sizes, the size of the embryo, the test conditions (MAO Stamping speed, lubrication method and blank-holder force, etc. ) 。 The indirect test method is also called base test method. The characteristics of the indirect test method is: on the plate in the process of plastic deformation of basic properties and on the basis of the analysis and study of law, and it further specific plastic deformation parameters of the stamping forming of sheet, establishing indirect test results ( Indirect test value) With a specific stamping performance ( The process parameters) The correlation between the. Due to the indirect test used in shape and size of specimen and loading ways are different in the stamping process of concrete, such as it nature of deformation and stress state are also different from the stamping deformation. So the indirect test result ( Test value) Not stamping process parameters, but can be used to represent sheet stamping performance basic parameters.