Quenching can improve the quality of plastic molds and is a heat treatment technology often used in processing. Quenching mainly involves heating the metal material to a temperature sufficient to cause phase change and then keeping it warm, then rapidly cooling it at a rate greater than the critical cooling rate to obtain a martensitic structure, and then tempering it at different temperatures to obtain the required mechanical properties. The quenching temperature should take into account the shape, size and original structure of the mold.
The annealing treatment of plastic molds is mainly to eliminate the internal stress caused by various reasons, so that the quality of the parts meets the use standards, there are no obvious defects in the appearance, and the performance of the mold steel is improved to facilitate the subsequent processing procedures. Annealing can make the metal structure inside the mold more stable and balanced, ensuring the quality of subsequent processing and final heat treatment. Annealing is the pearlite in the mold metal.
Due to various unfavorable factors, the injection mold causes cracking of the drawn parts, which is a very serious appearance defect. Too many defective products or even complete scrapping greatly wastes raw materials and reduces production efficiency, wasting resource loss. How to solve this situation? The pressing surface is unevenly colored and poorly polished, the pressing ribs are damaged, and the length of the mold support is not the same after installation.
After the plastic mold is manufactured, it needs to be debugged and inspected. Only when it is confirmed that there are no problems can it be applied to mass production. Whether it is mold debugging or formal production, the mold must be controlled to ensure the normal production and mold quality. So what are the key points of mold control? The quality of plastic parts needs to be controlled, mainly divided into size and environment
The installation and debugging of plastic molds is an important inspection work, which can effectively find out the problems of molds and produced parts, so as to make targeted modifications to make the mold meet the requirements. So what work needs to be prepared before mold installation and debugging? During the production process, we must pay attention to the personal safety of the staff, ensure that the integrity of the mold and equipment is not damaged, and the function of the machine is
The water transportation of plastic molds plays an important role in the molding of injection molded parts. Problems should be avoided when transporting water to avoid obvious appearance quality defects on the surface of the final molded parts. So what should be paid attention to when transporting water for molds? The core components of the mold must be well protected. When transporting water, be careful to prevent the copper head of the water pipe, screwdriver, and utility knife from scratching them.
After the injection mold is manufactured, it must be inspected by the customer. The inspection can be roughly divided into four stages. Only when no serious problems are found during the inspection can the mold be confirmed to be ready for delivery. Single debugging and online debugging inspection mainly test whether the assembled mold can be successfully installed on the processing equipment, whether the mold can be stable and produce parts that meet the standards, and whether the mold can be carefully inspected.
To ensure the normal operation of the plastic mold, the concave and convex mold inserts can cooperate with each other. The dimensions and tolerances must be strictly specified during the design. The verticality between the insert surface and the cutting edge cannot exceed 0.01 mm, and there is no reverse taper, looseness up and down, and the insert seams cannot cross and overlap. The fixed parts of the insert and the cutting edge are not allowed to be welded unless it is required during the design.
Plastic molds are very important for injection molding production. In order to ensure the safety of molds and workers, it is necessary to prepare countermeasures and prevention measures in advance. For the rigidity, strength, processability and quality of the mold, it is generally required that the mold can continuously produce one thousand products without serious quality and defect problems. The mold should be equipped with working and storage limiters, and the automated line mold
In order to facilitate installation and replacement, the flanging type plastic mold needs to separate the easily damaged inserts. Considering the problems of later assembly and adjustment, the inserts in the working part are preferably of retaining wall structure. Under normal circumstances, the overhang of the knife block cannot exceed ten millimeters. If there are special requirements, both parties must determine them in advance, and try to minimize the joint surface of the flanging knife and the shaping knife.
The principle of surfacing technology is to weld the filler metal to the damaged part of the plastic mold surface. Butt welding technology is widely used in the plastic mold industry, which effectively improves the performance and life of the mold, reduces production costs, improves work efficiency, and prevents cracks in the mold to ensure the stability and quality of the mold. In the mold manufacturing process, it is inevitable to perform trimming, and the materials used must be
Brush plating is a technology that repairs scratches, roughness, grooves and wear on the surface of plastic mold cavities. After the repair is completed, the mold life can be effectively improved, and the wear resistance, hardness and surface roughness of the mold surface can reach the original performance standards. The use of brush plating technology is generally under normal temperature and no groove conditions. The local surface of the workpiece is quickly electrochemically deposited with metal or
The welding material of plastic mold is the most basic condition and the most critical part for welding repair. According to different mold materials and different heat treatment states of mold welding repair, the most suitable welding material should be selected. For welding of molds in annealing state and not heat treated, the material and the parent material should be as similar as possible to avoid cracking during the heat treatment process, which will affect the performance.
In order to ensure the welding quality of plastic mold components, it is very important to select the right and reasonable materials. There are two commonly used welding metal materials, medium carbon steel and high carbon steel, and they have different characteristics during welding. When medium carbon steel is used for welding, the hardening tendency of the heat affected zone gradually increases, and cracks and pores are prone to occur. In order to avoid this situation,
The weld and the surrounding areas are heated and cooled to different degrees. The heat affected zone of the weld is the welding joint of the plastic mold. The formation of the fusion weld requires local heating and melting to produce a common molten pool at the joint of the workpiece, and then solidification and crystallization to become a whole. At high temperatures, a part of the coating of the welding rod will decompose into gas.
QR code attention
Shenye plastic
