Epoxy casting process method – resin, technology – Gifts & Crafts Industry –
1. Epoxy resin Casting process method:
1. Materials into Mold Way to differentiate can be divided into casting and pressure injection. Means the material into the mold gravity casting. It sub-atmospheric pressure casting and vacuum casting. Note that the material in the external pressure under pressure into the mold, and in order to force feeding, in the material curing process, still maintains a certain degree of external pressure, it is simply pressure from the previous gel developed into the current Mature automatic pressure gel method.
2. To distinguish from the curing temperature materials can be divided into high-temperature casting temperature casting method and the method. Room temperature or high temperature casting method used by pouring the material nature of the decision itself, the underlying difference is that the process of casting materials required curing temperature.
3. To distinguish between the speed of curing materials can be divided into two general solid (Xiao resin-line reproduction) and rapid solidification method. Material into the mold to form removal time required for the initial curing time, curing common and even take a few dozen hours, rapid solidification, only 10 minutes to a few minutes.
2. Casting method, modern casting process, the application of more mature is the vacuum casting method and the automatic pressure gelation method.
1. Vacuum casting process:
Vacuum casting process is the most widely used in epoxy resin casting, the process is most
Mature technology methods. For an epoxy cast of the (Xiao resin line is reproduced) electrical insulation products, it requires a perfect appearance, dimensional stability, mechanical properties, electrical properties eligible. It depends on the performance of its workpiece design, mold quality, the choice of casting material, casting process conditions of the control aspects. Vacuum casting resin is the main technical points of casting products to minimize the air gap and bubble. To achieve this goal, the pretreatment of raw materials, mixing, casting and other processes are needed to control all good vacuum, temperature and process time.
2. Automatic pressure gelation process
Automatic pressure gelation process is the early 70s of the 20th century by the CIBA-Geigy, Switzerland, developed the technology. Because this process is similar to thermoplastic injection molding (Xiao resin-line reproduction) process methods, and therefore called the pressure injection process. Its most significant advantage is greatly enhanced casting ergonomics. It can be said automatic pressure gel developed technology and a large number of applications in industry, is vacuum cast from the intermittent, manual to Automation A revolution in the development of production, it's the main difference between the vacuum casting
Is:
casting material under pressure in the outside world through Pipeline From the injection port into the mold.
mixture of materials with low processing temperature, mold temperature is high.
material into the mold, the curing speed, usually 10 minutes to a few minutes.
fixed mold Hydraulic pressure Machine, mold heating the mold or mold to provide a fixed panel heaters.
mold removed from the hydraulic press together the mold fixed plate movement to complete.
Features automatic pressure gelation process: mold used (Xiao resin-line reproduction) rate, short production cycles, labor efficiency; mold damage during loading and unloading the low level of mold long life; high degree of automation , operator labor intensity light; products molding, good product quality has improved.
[Keywords]: Resin Technology Comment Large In Small
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