Polishing skills of plastic molds and their influencing factors

Polishing of Automotive Injection Molding needs to be done step by step. First, the corresponding processing is carried out with coarse to fine whetstone. After the previous step is completed, sand it step by step with coarse sandpaper into fine sandpaper, and then sand it from coarse to fine with different types of drill fume abrasive paste.

Polishing of mirrors also involves the use of the item. During rough machining, polishing technicians have corresponding technical requirements for the use and strength of the whetstone. They should move evenly without scratching the grooves. Sandpaper requires the use of high-quality sandpaper. In addition, there are softwoods and hardwoods available for sanding. Generally speaking, hardwood is used for rough grinding, and polishing is relatively required with cork, and then with imported diamond grinding and polishing paste, mirror polishing can be achieved.

Note for injection molds: injection molding cost, according to the size of the machine, how much per beer, and then recognize the ranking method and number of holes of the product. The larger the number of molds, the lower the injection molding cost. Because when adding cost in injection molding, cost accounting is calculated by beer times. Product appearance, according to product appearance requirements, identify the parting surface. The positioning of the parting surface should be conducive to mold processing, exhaust, demoulding, etc. The more products there are, the greater the risk of appearance problems. The nozzle method identifies the shape, size, and exhaust location of the main and split runners. The cost of hot runner molds is high, but the cost of nozzles is low. Each method has its pros and cons, depending on the user's choice. When the product is demolded, recognize the ejection method and the placement of the ejector pin. The more ejection positions, the higher the mold cost.