Company News

• How to Check Whether the Mold Slider Is Qualified

  2024 / 11 / 19

  Visual Inspection： 1. ‌Check for Missing Machining Parts ‌: make sure that all the parts required by design have been completed. If there is any missing machining, return directly to the processing department. 2. ‌ Check the Appearance ‌: the surface of the slider has no collapsing Angle or collision injury, the surface of the cavity is smooth and flat, there is no sand hole, rust and other defects, and the release direction is not reversed. 3. ‌ Check the Chamfer ‌: the part th

• What are the important stages in the injection molding process of plastic parts?

  2024 / 11 / 13

  The injection molding process of plastic parts mainly includes four stages: filling - holding pressure - cooling - demolding. These four stages directly determine the molding quality of the product, and these four stages are a complete continuous process.   1. Filling stage   Filling is the first step in the entire injection molding cycle. The time starts from the mold closing and injection molding until the mold cavity is filled to about 95%. In theory, the shorter the filling time, the higher the molding efficiency, but in practice, the molding time or injection speed is subject to many conditions.   High-speed filling   The shear rate is high during high-speed filling, and the plastic has a decrease in viscosity due to shear thinning, which reduces the overall flow resistance; local viscous heating will also make the solidified layer thinner. Therefore, in the flow control stage, the filling behavior often depends on the volume to be filled. That is, in the flow control stage, due to high-speed filling, the shear thinning effect of the melt is often large, and the cooling effect of the thin wall is not obvious, so the rate effect prevails.   Low-speed filling   When heat conduction controls low-speed filling, the shear rate is low, the local viscosity is high, and the flow resistance is large. Since the hot plastic replenishment rate is slow and the flow is slow, the heat conduction effect is more obvious, and the heat is quickly taken away by the cold mold wall. Coupled with a small amount of viscous heating phenomenon, the thickness of the solidified layer is thicker, which further increases the flow resistance at the thinner wall.   Due to the fountain flow, the plastic polymer chains in front of the flow wave are arranged almost parallel to th

• The Production Process of BMC Mold ‌

  2024 / 11 / 09

  The Production Process of BMC Mold ‌ Mainly Includes the Following Steps:   1. ‌ Raw material preparation ‌: The liquid components and additives in the formula are fully stirred in a high-speed beater to prepare the paste. Then put the powder filler into the kneading machine and mix slightly, and then pour the paste into the kneading machine for full kneading and mixing, to complete the uniform mixing of liquid-solid two phases. 2. ‌ Glass fiber treatment ‌: Sprinkle the cut glass fiber on the mixed paste at startup and mix it strongly for 5~8 minutes until the glass fiber is coated and impregnated with the paste. This process needs to avoid breaking the glass fiber for too long, so as not to affect the quality of the final product. 3. ‌ Molding ‌: P