Talking about the Application of BerylliumCopper in Plastic Mould
Nowadays, more and more beryllium coppermold materials have been used in the manufacture of plastic molds, and there isa rising trend. What is the reason for this phenomenon? Let me learn about theuse of beryllium copper in plastic molds with the editor, and why.
1. Sufficient hardness and strength: Aftermany tests, engineers can find out and master the hardening conditions andworking conditions of beryllium copper machining alloyprecipitation and the mass characteristics of beryllium copper (this is thepoint that the beryllium copper alloy is based on A prelude to the applicationof formal products in the market); beryllium copper materials need to gothrough multiple cycles of tests before they are used in plastic molds tofinally determine the physical properties and chemical components that meet themanufacturing and processing; the proof of theory and practice-beryllium Whenthe hardness of copper is hrc36-42, it can reach the hardness, strength, highthermal conductivity required for tungsten die manufacturing,simple and convenient machining, long mold life, and save development andproduction cycle.
2. Good thermal conductivity: The thermalconductivity of beryllium copper material is beneficial to control thetemperature of the plastic machiningmold, and it is also easier to control the molding cycle, while ensuring theuniformity of the mold wall temperature; if compared with the steel mold, themolding of beryllium copper The cycle is much smaller, and the averagetemperature of the mold can be reduced by about 20%. When the differencebetween the average ejection temperature and the average wall temperature ofthe mold is small (for example, when the mold parts are not easy to be cooled),use the beryllium copper mold material to cool The time can be reduced by 40%.The mold wall temperature is only reduced by 15%; the characteristics of theabove beryllium copper mold materials willbring several benefits to the mold manufacturers using this material to shortenthe molding cycle and increase the productivity; the uniformity of the moldwall temperature improves the quality of the drawn products; The mold structureis simplified because the cooling pipes are reduced; the temperature of thematerial can be increased, thereby reducing the wall thickness of the productand reducing the cost of the product.
3. Long service life of the mold: Budgetingthe cost of the mold and the continuity of production, the expected servicelife of the mold is very important for the manufacturer. When the strength andhardness of the beryllium coppermeet the requirements, the temperature of the beryllium copper Stressinsensitivity can greatly improve the service life of the mold. Beforedetermining the use of beryllium copper mold materials, the yield strength,elastic modulus, thermal conductivity and temperature expansion coefficient ofberyllium copper should also be considered. The resistance of beryllium copperto thermal stress is much stronger than that of die steel. From this point ofview, the service life of beryllium copper is remarkable!
4. High thermal penetration rate: Inaddition to the thermal conductivity of the pull, the thermal penetration rateof the powdermetallurgy mold material is also very important to the plastic products. Onthe mold using beryllium bronze, the traces of overheating can be eliminated.If the thermal penetration rate is low, The contact temperature of the distalregion of the mold wall will be higher, which will increase the temperaturedifference of the mold, and in extreme cases will cause the temperature of theregion to change from the sink mark at one end of the plastic product to thetrace of overheated product at the other end .
5. Excellent surface quality: beryllium copper is very suitable forsurface finishing and can be directly electroplated, and the adhesionperformance is very good, and the polishing treatment of beryllium copper isalso very easy.
Copyrightnotice: This article comes from https://led-heatsink.net/
Please keep the source and address of this article forreprinting: https://led-heatsink.net/talking-about-the-application-of-beryllium-copper-in-plastic-mould/
