The extrusion die is a key component in the two-way drawing equipment, which directly determines the shape and thickness uniformity of the cast sheet. This type of two-way drawing casting die is designed with coat hanger-type runners, and the channel simulation analysis and optimization are carried out with the help of professional computer fluid analysis software, so as to obtain the best runner parameters. The die lip adopts push-pull automatic adjustment of the die lip. The thickness data detected by the online thickness gauge can be processed by the computer program and then fed back to the special die lip thermal expansion adjustment bolt to realize automatic fine-tuning of the opening thickness of the die lip, which is fast and effective. Control product accuracy; this type of die head can be applied to: BOPP, BOPS, BOPA, BOPET, BOPI, etc.
The straightness, roughness and sharp angle of the lip of the casting die directly affect the product quality. Through our experiments and demonstrations, the die lip can be effectively improved after local hardening treatment. For example, the surface hardness is high, the metallographic structure is refined, and the wear resistance is superior to the traditional quenching process, and the hardened die lip can obtain better straightness and wear resistance.
