The quality of injection molding is closely related to the equipment and process used. Injection molding plants that can achieve significant improvements in these two aspects often have greater advantages in market competition. Therefore, many injection molding plants pay attention to injection molding machines with various functions on the market and are willing to invest a lot of money in equipment procurement. With advanced production equipment, injection molding workers will also continue to study the impact of different injection molding parameters on the quality of the final product, thereby improving the overall quality of the product.
In the injection molding production process, different injection molding parameters need to be adjusted according to the characteristics of the product to meet production requirements. Among them, injection molding pressure is an important parameter, which is provided by the hydraulic system of the injection molding system. At present, the factors affecting injection molding pressure can be roughly divided into three categories. The first is material factors, such as the viscosity of materials such as PVC and PP. The second is structural factors, including casting type, mold cavity shape, and the intensity of injection molding workers’ adjustment of injection molding machine pressure. Finally, there are molding process factors. Different products (such as mobile phone shells and plastic bottles) require different pressures for molding methods.
In addition, the regulation of injection time is equally important. It refers to the time required for the plastic melt to fill the cavity, excluding other times such as mold opening. Usually, the injection time is relatively short, even only one-tenth of the cooling time. Therefore, in the process of injection molding, it is particularly important to arrange the production process reasonably.
Another parameter that needs attention is the injection temperature, which directly affects the effect of injection pressure. In the barrel of the injection molding machine, there are usually five to six heating sections, which play a key role in the processing of raw materials. Temperature control is crucial. Too low temperature will lead to poor plasticization of plastics and affect the molding effect; too high temperature may cause the raw materials to decompose, thereby increasing the rate of defective products. Therefore, the PEEK injection molding manufacturers needs to strictly control these parameters during the production process to ensure the stability and improvement of product quality.
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