国产欧美日韩视频在线观看-成人影片在线免费观看-日韩成人在线看-九九爱精品视频-网红福利视频-日韩mv欧美mv国产网站-91热爆视频-黄网站免费永久在线观看网址-999视频在线观看-日韩欧美福利视频-国产一及毛片-中文字幕婷婷-亚洲97视频-亚洲精品屋v一区二区-夜夜躁狠狠躁日日躁麻豆-少妇野外性xx老女人野外性xx-中美日韩毛片免费观看-风流老熟女一区二区三区-午夜一区在线-久久综合久久鬼

news

Focus on current issues

How to prevent plastic molds from rusting?

If the plastic mold is placed for a long time without professional treatment, it will affect the life of the plastic mold. The reason why the plastic mold will rust is caused by the gas generated after the melt is overheated and decomposed. So how to prevent plastic molds from rusting?

First of all, when the injection molding stops, wipe the plastic mold products with a clean soft dry cloth.

Then, when the processing mold has not been formed, you must pay attention to closing it. The advantage of this is mainly to avoid corrosion caused by the gas generated by the surrounding injection agent. When closing the plastic mold, it is best to apply butter.

Finally, when the molding is stopped for a long time, spray anti-rust agent in the mold cavity. It should be noted that before spraying, the mold cavity must be wiped clean until there are no rust spots.
m.zznissan-yumsun.com.cn