Metal parts can be polished to improve the surface quality. What should the injection parts do if they have defects such as aging, loss of light, scratches, corrosion, etc.? Of course, the polishing process can also be performed. In addition, the MC nylon wheel can also repair the injection molded part by the bonding method to restore the visual effect.
For injection molded parts, ash throwing or grinding and polishing ash can remove cold spots and marks on the surface. The commonly used polishing materials here are 100-150 mesh poncho powder. Grinding and polishing can smooth the rough surface of the injection molded part and can be processed with silica fine powder of about 300 mesh. If the surface requirements are not high, cleaning and drying after polishing are finished.
If you want to increase the gloss of the surface of the injection molded parts, then you need to carry out the enrichment and polishing. The throwing wheel used for the enrichment and polishing is a softer wool. The polishing materials are also a kind of grease, such as high-grade toothpaste and white ointment. Or wetted decontamination powder, etc.
When the surface of the injection molded part is damaged, it is usually repaired by a bonding method, which is a repairing method for bonding the injection molded part by using a chemical adhesive. Before the start, the entire injection molded part needs to be cleaned and dried. If the nylon wheel of the injection molded part elevator is deformed, the infrared lamp is used to heat the deformed part and its surroundings to return it to its original state.
Then drill holes in the cracks of the injection molded parts, and use a drill bit to drill a hole at the end of the crack to prevent the crack from further developing; and grind the V-shaped groove and repair it with sandpaper. When the back side of the injection molded part is seriously damaged, it is necessary to use the adhesive and the auxiliary material to jointly enhance the back strength of the damaged part.
Apply a bonding accelerator to the repaired part of the front part of the injection molded part, apply the prepared adhesive to the repaired part and its surroundings, and harden it according to the regulations.
The processing of injection molded parts is a very demanding process. It requires not only effective control of each injection molding process, but also the use of injection molds. This will involve the concept of gates. It is one of the important components of injection molds. There are different types to meet the molding requirements of different injection molded parts. Would you like to know about it?
There are three common types of gates during the processing of injection molded parts, namely direct gates, rectangular gates, and fan gates. Among them, the direct gate is widely used, and its great advantage is that it can satisfy the situation that the melt pressure is small during the injection molding process, which makes the molding easy. Moreover, it is suitable for any plastics commonly used, mainly for some injection molded parts that are relatively large and deep.
The position of the rectangular gate is generally opened on the parting surface of the injection mold, so it is mostly used in the mold of small and medium-sized injection molded parts. The nylon ribbed elevator has a relatively simple cross-sectional shape, so it is easier to process, and it is easy to modify later. However, rectangular gates are prone to gate marks, which is also a big disadvantage.
Fan-shaped gates are actually based on rectangular gates, so they have many similarities to rectangular gates, but they are suitable for injection molding large flat and thin-walled injection molded parts.