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Dry powder pressing mold process characteristics and Interchangeability

Jan 27, 2018

Powder pressing mold in the process of using because of its powder pressing methods are many, the powder pressing mold is also varied, in the use of the method according to its suppression can be divided into fine mold, complex mold, the compression mold , Forging mode and so on.

Dry powder pressing mold classification structure diagram and deformation characteristics, in the process of designing its basic principle is to a certain extent, the full play of powder metallurgy, non-cutting and forming process characteristics, to ensure that the blank to achieve geometry Shape and size, precision and surface roughness, density and distribution of three basic requirements.

Dry powder pressing molds are required for use whether they are finishing, compression, compression or forging dies. Among them, in particular, the density of blank and forging billet and the distribution of the problem is the main technical indicators in the mold design; reasonable design of the mold structure and the choice of mold material, the mold parts have high enough strength, stiffness and hardness, with high Wear resistance and service life to meet the requirements of high pressure working container safe and reliable and easy to operate.

To a certain extent, dry powder pressing molds need to pay attention to the machinability and interchangeability of mold structure and mold parts, and reduce the cost of mold manufacturing. First understand and grasp the design information as an important basis for mold design; followed by the product requirements for material design and process design, according to the product drawings or preform compact design, and select the press and the suppression of mold design Structure sketch.

Then based on the size of the blank, taking into account the dimensional changes in the process, respectively, the size of the main mold parts are calculated, the general calculation of the cavity directly related to the size, and then according to mold assembly relationship to calculate the size of other mold parts; the final drawing mold Assembly drawings and parts drawings, according to the different types of mold work requirements, marking the size of the deviation and form tolerance, and select the mold material and technical requirements.http://www.yxhgmould.com/