塑料加工注意事項

1、塑料注塑加工收(shou)縮(suo)問(wen)題(ti)是塑料(liao)(liao)加工中最(zui)(zui)常見的(de)(de)問(wen)題(ti)之一，對表面質(zhi)量(liang)要求高的(de)(de)塑料(liao)(liao)制品(pin)，收(shou)縮(suo)更是棘(ji)手的(de)(de)問(wen)題(ti)。因此(ci)隨著(zhu)塑料(liao)(liao)加工工藝的(de)(de)不斷(duan)完善(shan)，以最(zui)(zui)大限度地減少塑料(liao)(liao)加工收(shou)縮(suo)問(wen)題(ti)，提高產品(pin)質(zhi)量(liang)勢在必行(xing)。

2、在塑料加工注塑塑料部件較厚位置，如筋肋或突起處形成的收縮要比鄰近位置更嚴重，這是由于較厚區域的冷卻速度要比周圍區域慢得多。冷卻速度不同導致連接面處形成凹陷，即為人們所熟悉的收縮痕。這種缺陷嚴重限制了塑料產品的設計和成型，尤其是大型厚壁制品如電視機的斜面機殼和顯示器外殼等。事實上，對于日用電器這一類要求嚴格的產品上必須消除收縮痕，而對于玩具等一些表面質量要求不高的產品允許有塑料加工收縮痕的存在。

塑料產品兩側變形的原因分析

塑(su)料制品的(de)(de)翹曲(qu)(qu)變(bian)(bian)(bian)(bian)(bian)形(xing)是(shi)塑(su)料件(jian)常見的(de)(de)成(cheng)型質量缺陷。 塑(su)料件(jian)的(de)(de)題(ti)曲(qu)(qu)變(bian)(bian)(bian)(bian)(bian)形(xing)主(zhu)要(yao)是(shi)因為塑(su)料件(jian)受到(dao)了較(jiao)大的(de)(de)應力(li)(li)作用(yong)，主(zhu)要(yao)分(fen)為外(wai)部應力(li)(li)和(he)(he)內部應力(li)(li)，當大分(fen)子間的(de)(de)作用(yong)力(li)(li)和(he)(he)相互維結力(li)(li)承受不住這種(zhong)應力(li)(li)作用(yong)時(shi)，塑(su)料件(jian)就會發生(sheng)旭曲(qu)(qu)變(bian)(bian)(bian)(bian)(bian)形(xing)。外(wai)部應力(li)(li)導致的(de)(de)想曲(qu)(qu)變(bian)(bian)(bian)(bian)(bian)形(xing)此類翹曲(qu)(qu)變(bian)(bian)(bian)(bian)(bian)形(xing)主(zhu)要(yao)為制件(jian)頂出變(bian)(bian)(bian)(bian)(bian)形(xing)，產生(sheng)的(de)(de)原(yuan)因為模(mo)

塑料模具的注射壓力分析理解

注射(she)壓(ya)(ya)(ya)力也稱為激(ji)勵壓(ya)(ya)(ya)力、填(tian)(tian)充(chong)壓(ya)(ya)(ya)力或第一(yi)階段(duan)注射(she)壓(ya)(ya)(ya)力。注射(she)壓(ya)(ya)(ya)力的作用是保證注射(she)過程(cheng)中始終有充(chong)沛的壓(ya)(ya)(ya)力，避(bi)免(mian)因壓(ya)(ya)(ya)力受限而影響填(tian)(tian)充(chong)速(su)度(du)的情況發(fa)生。如果填(tian)(tian)充(chong)壓(ya)(ya)(ya)力限制了填(tian)(tian)充(chong)速(su)度(du)，材料的剪切(qie)速(su)率就會發(fa)生變化(當出現壓(ya)(ya)(ya)力受限時，壓(ya)(ya)(ya)力將控制填(tian)(tian)充(chong)過程(cheng)，于(yu)是填(tian)(tian)充(chong)速(su)度(du)或流動速(su)率便趨不穩(wen)，正在進行剪切(qie)的塑

異形塑料件行業的優勢

聚(ju)乙(yi)烯(xi)(xi)異(yi)型件(jian)是(shi)熱(re)塑(su)(su)性(xing)(xing)(xing)工(gong)(gong)程塑(su)(su)料。它結合了所有(you)(you)塑(su)(su)料的優越性(xing)(xing)(xing)能，具(ju)有(you)(you)耐(nai)(nai)(nai)磨(mo)、耐(nai)(nai)(nai)沖擊、耐(nai)(nai)(nai)化(hua)學腐(fu)蝕、自潤滑、低溫耐(nai)(nai)(nai)磨(mo)、質輕、吸能、耐(nai)(nai)(nai)老化(hua)、阻燃、抗靜電等優良性(xing)(xing)(xing)能特性(xing)(xing)(xing)。超高分子量聚(ju)乙(yi)烯(xi)(xi)板(ban)材的耐(nai)(nai)(nai)磨(mo)性(xing)(xing)(xing)居塑(su)(su)料之首。聚(ju)乙(yi)烯(xi)(xi)異(yi)形件(jian)是(shi)熱(re)塑(su)(su)性(xing)(xing)(xing)工(gong)(gong)程塑(su)(su)料。它結合了所有(you)(you)塑(su)(su)料的優越性(xing)(xing)(xing)能，具(ju)有(you)(you)耐(nai)(nai)(nai)磨(mo)、耐(nai)(nai)(nai)沖擊、耐(nai)(nai)(nai)化(hua)學腐(fu)蝕、

注塑模具的定義

注(zhu)(zhu)塑(su)模(mo)具的(de)定(ding)義(yi)： 塑(su)料(liao)注(zhu)(zhu)射成(cheng)型(xing)所(suo)用(yong)的(de)模(mo)具稱(cheng)為注(zhu)(zhu)塑(su)成(cheng)型(xing)模(mo)具，簡稱(cheng)注(zhu)(zhu)塑(su)模(mo)。注(zhu)(zhu)塑(su)模(mo)能一次成(cheng)型(xing)外形復雜、尺寸精確高或帶有(you)嵌件的(de)塑(su)料(liao)制品。“七分模(mo)具，三分工(gong)藝”。對(dui)(dui)注(zhu)(zhu)塑(su)加工(gong)來說，模(mo)具和(he)注(zhu)(zhu)塑(su)機一樣對(dui)(dui)成(cheng)型(xing)品的(de)質量有(you)很大(da)的(de)影響，甚(shen)至可以說模(mo)具比注(zhu)(zhu)塑(su)機所(suo)起(qi)的(de)作(zuo)用(yong)更大(da)；在注(zhu)(zhu)塑(su)成(cheng)型(xing)時如果對(dui)(dui)模(mo)具不充(chong)分了解(jie)

模具加工工藝規程和精加工工藝

模具(ju)加工(gong)(gong)(gong)(gong)(gong)(gong)工(gong)(gong)(gong)(gong)(gong)(gong)藝規程的(de)內容要(yao)求(qiu)(qiu)(qiu)1）模具(ju)或零件(jian)的(de)名稱、圖號、材料、加工(gong)(gong)(gong)(gong)(gong)(gong)數量(liang)和(he)(he)技術(shu)要(yao)求(qiu)(qiu)(qiu)等標(biao)題欄；2）毛坯尺寸和(he)(he)供貨狀態；3）工(gong)(gong)(gong)(gong)(gong)(gong)藝定(ding)位基(ji)準(zhun)；4）成(cheng)型件(jian)的(de)加工(gong)(gong)(gong)(gong)(gong)(gong)方法(fa)和(he)(he)順序(xu)；確定(ding)各(ge)工(gong)(gong)(gong)(gong)(gong)(gong)序(xu)的(de)加工(gong)(gong)(gong)(gong)(gong)(gong)余量(liang)、工(gong)(gong)(gong)(gong)(gong)(gong)序(xu)尺寸和(he)(he)公差要(yao)求(qiu)(qiu)(qiu)以及工(gong)(gong)(gong)(gong)(gong)(gong)裝(zhuang)、設備(bei)的(de)配置；5）各(ge)工(gong)(gong)(gong)(gong)(gong)(gong)序(xu)的(de)工(gong)(gong)(gong)(gong)(gong)(gong)時定(ding)額(e)；6）確定(ding)裝(zhuang)配基(ji)準(zhun)裝(zhuang)配順序(xu)、方法(fa)和(he)(he)要(yao)求(qiu)(qiu)(qiu)；7）確定(ding)試模要(yao)求(qiu)(qiu)(qiu)和(he)(he)驗收標(biao)準(zhun)。