In order to be able to produce qualified injection shell, then the quality of the above improvement is inevitable, but many manufacturers for this piece is half know half understand, today small make up to tell you how to improve the quality of injection shell.
The selection of injection molding shell materials should not only meet the customer's requirements on product quality, but also take into account the cost of materials and its strength in the set period. Of course, the selection of materials should be based on the type of injection molding shell, working mode, processing speed, main failure mode and other factors.
For example: the main form of die failure is cutting edge wear, it is necessary to choose a high surface hardness, good wear resistance materials; Stamping die mainly bear periodic load, easy to cause surface fatigue crack, resulting in surface spalling, it is necessary to choose surface toughness of good materials; Deep drawing die should choose the friction coefficient of the material is particularly low; Because die casting die is subjected to cyclic thermal stress, materials with strong thermal fatigue should be selected.
For the injection shell, when the plastic parts for ABS, PP, PC and other materials, the injection shell materials can choose pre-hardened quenched and tempered steel, when the plastic parts for high gloss, transparent materials, corrosion resistant stainless steel, when large batch products can choose quenching and tempering steel. In addition, it is also necessary to consider the use of injection molding shell materials with less affinity with the parts, in order to prevent adhesion mold aggravate the wear of injection molding shell parts, thus affecting the quality of injection molding shell.
Perfect quenching process, for the injection shell, quenching process is indispensable, quenching steps to the correct operation, if there is a step wrong operation, will cause the production of injection shell quality problems, resulting in injection shell can not be used or shorten the service life.
Injection molding shell assembly: injection molding shell assembly is just like the assembly machine, every component, every screw can not make mistakes, otherwise the consequences will be quite serious, light will lead to product defects, affect production, heavy will completely damage the injection molding shell, resulting in scrap. So the assembly of the work must be very careful. In the assembly process, pay attention to the cleaning of the injection shell, especially the waterways and screw holes, and be sure to blow out the iron chips inside.
Maintenance of injection molding shell: the maintenance of injection molding shell is mainly the maintenance in the production process. After each use of injection molding shell, comprehensive maintenance should be carried out, especially the rust prevention of the molding part and the rust prevention of the main moving parts.
Because the injection shell in the production process to receive water, may be in the installation or disassembly process sleep on the injection shell, so must ensure that the injection shell dry, and then brush a layer of oil protection.
