注塑加工里注塑成型的溫度(du)因素(su)

  注塑加工廠家(jia)中注塑(su)(su)成型(xing)是一門工程技(ji)術，它涉(she)及到將(jiang)塑(su)(su)料轉化為有用的(de)和(he)原始的(de)產品。注塑(su)(su)成型(xing)的(de)重要工藝(yi)條件(jian)是影響塑(su)(su)化流動和(he)冷(leng)卻的(de)溫(wen)度、壓力及相應的(de)作用時(shi)間。

溫度控制

  1.筒(tong)體(ti)溫度(du)(du)(du)(du)： 注塑(su)(su)加工廠家在(zai)注塑(su)(su)過程中需要(yao)控(kong)制的(de)溫度(du)(du)(du)(du)包括筒(tong)體(ti)溫度(du)(du)(du)(du)、噴嘴溫度(du)(du)(du)(du)、模具溫度(du)(du)(du)(du)等(deng)，前兩個溫度(du)(du)(du)(du)主要(yao)影(ying)響塑(su)(su)料的(de)塑(su)(su)化(hua)(hua)和(he)流(liu)動，第二個溫度(du)(du)(du)(du)主要(yao)影(ying)響塑(su)(su)料的(de)流(liu)動和(he)冷卻(que)。每種塑(su)(su)料都有不(bu)(bu)同(tong)(tong)(tong)(tong)(tong)的(de)流(liu)動溫度(du)(du)(du)(du)。對于(yu)同(tong)(tong)(tong)(tong)(tong)一種塑(su)(su)料，由于(yu)來源(yuan)或品牌不(bu)(bu)同(tong)(tong)(tong)(tong)(tong)，其流(liu)動溫度(du)(du)(du)(du)和(he)分(fen)解溫度(du)(du)(du)(du)也(ye)(ye)不(bu)(bu)同(tong)(tong)(tong)(tong)(tong)。這是(shi)由于(yu)不(bu)(bu)同(tong)(tong)(tong)(tong)(tong)的(de)平均(jun)分(fen)子(zi)量和(he)分(fen)子(zi)量分(fen)布。塑(su)(su)料在(zai)不(bu)(bu)同(tong)(tong)(tong)(tong)(tong)類型注塑(su)(su)機中的(de)塑(su)(su)化(hua)(hua)過程也(ye)(ye)不(bu)(bu)同(tong)(tong)(tong)(tong)(tong)，因此桶溫的(de)選擇也(ye)(ye)不(bu)(bu)同(tong)(tong)(tong)(tong)(tong)。

  2.噴(pen)嘴溫(wen)度：噴(pen)嘴溫(wen)度通常(chang)略低于桶的(de)較高溫(wen)度，這(zhe)是為了防止在穿透(tou)噴(pen)嘴中(zhong)的(de)熔融物質的(de)可(ke)能“流涎(xian)”。噴(pen)嘴的(de)溫(wen)度不(bu)宜太(tai)低，否(fou)則會因(yin)熔體的(de)早(zao)期(qi)凝固而堵(du)塞噴(pen)嘴，或因(yin)注射(she)到模腔中(zhong)的(de)早(zao)期(qi)凝固材料而影(ying)響產品的(de)性能。

  3.模(mo)具(ju)溫度(du)(du)：模(mo)具(ju)溫度(du)(du)對產品的內(nei)在(zai)性能(neng)和外(wai)觀質量有很大的影響。模(mo)具(ju)溫度(du)(du)取決于塑料的結晶度(du)(du)、產品的尺寸和結構、性能(neng)要(yao)求以及其他工藝條件（熔體(ti)溫度(du)(du)、注射(she)速(su)度(du)(du)、注射(she)壓力、成型周(zhou)期等(deng)）。