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玻璃钢雕塑金属模
添加时间：2018/6/15 15:22:21     浏览次数：
玻璃钢雕塑金属模
FRP sculptural metal mould
金属模特别是钢模，一般用于尺寸小、批量大的模压产品。如制作玻璃钢平板时表面光洁的不锈钢板;制作型材时用角钢、槽钢。因为模压产品不仅要加压，还要加热。也有用于外形不复杂的大型产品。黄铜虽是常见金属，但因易受树脂辅助剂侵蚀，并会对树脂固化产生不利影响，除非在工作面已镀铬或其他金属的场合，否则不宜采用。金属模具的制造加工很困难、成本高。另有低熔点合金模其成分是:Zn93%、Al4%、Cu3%、Mn0.5%，当温度为50～80℃时，合金硬度(HB)为100左右。其流动性好，耐磨性差，适于制造形状复杂、花纹精细的塑料成型模腔，使用温度一般>80℃。另一种低熔点金属是58%铋，42%锡，熔点135℃。低熔点合金模的优点是制模周期短、工艺简单，可重复使用。
Metal molds, especially steel dies, are commonly used in small size and large volume moulded products. For example, when making glass fiber reinforced plastic plate, the surface is clean stainless steel plate; when making profiles, angle steel and channel steel are used. Because molded products should not only pressurize, but also heat. There are also large products for uncomplicated shapes. Although brass is a common metal, it is easily eroded by resin auxiliaries and will have adverse effects on the curing of the resin. It is not suitable to be used unless it has been plated with chromium or other metals on the working face. The manufacturing and processing of metal mold is very difficult and costly. A low melting point alloy mold is composed of Zn93%, Al4%, Cu3% and Mn0.5%. When the temperature is 50~80 degrees, the hardness of the alloy is about 100. It has good fluidity and poor wear resistance. It is suitable for making plastic molding cavity with complicated shape and fine pattern, and the temperature is generally >80 degrees. Another low melting point metal is 58% bismuth, 42% tin, melting point 135 degrees. The advantage of the low melting point alloy die is that the die making cycle is short, the process is simple, and it can be reused.
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