Wuhan Handern Transfer Molding
DATE：2020/8/18 8:52:25 / READ： / SOURCE：This station
Wuhan Handern Transfer Molding
The characteristic of transfer molding is that the material flows into the closed cavity with lower pressure in the plastic state. Therefore, transfer molding has the following advantages: ①The flash at the parting surface is easy to repair. ②The material can heat through and harden quickly and uniformly in the mold. When the wall thickness of the parts is the same, the hardening time is only It is equivalent to 1/3-1/5 of the compression mold. Therefore, it is known for molding weeks. ③ Complicated parts with high moldability and large parts. ④ The molded parts have high dimensional accuracy. ⑤ The mold wears little and has a long service life. The disadvantage is that ① transfer molding consumes more materials than compression molds, because there will be a small amount of residual material in the cavity after die casting: ②The structure of the compression mold is more complicated than that of the compression model, so the cost is higher: ③The pressure loss is large , Because the surface requires high forming force. www.handern.com SMS non-woven equipment
The requirements for plasticity of transfer molding are: before the hardening temperature is reached, the molding material should have greater fluidity, and after reaching the hardening temperature, it must have a faster hardening violation. Thermosetting plastics such as phenol, melamine, methylepoxy resin, unsaturated poly and polydiallyl phthalate can meet this requirement. www.handern.com SMS non-woven equipment
The transmission molding process is similar to the injection molding of thermal plastics. The difference is that the molding material is heated and cultivated in the cavity of the mold, instead of being molded in the injection machine. www.handern.com SMS non-woven equipment
The transfer mold is to add thermosetting molding material or pre-pressed material into the material cavity installed on the closed pressing mold, so that it is softened by heat, and under the pressure of the pressure column matched with the material, the molten plastic is passed through the material The sprue at the bottom of the cavity and the runner and gate of the mold flow into the cavity, and the chemical reaction is completed in the cavity to solidify and shape, and the product is obtained after demolding. www.handern.com SMS non-woven equipment
Author：admin