Busa mold zane da allura mold kamance da bambance-bambance, ya kamata kula da abin da?

1. Busa gyare-gyaren gyare-gyaren ƙirar ƙirar tsari ya bambanta, nau'in gyare-gyaren ƙirar ƙira shine allura + busa;Yin gyaran allura shine allura + matsa lamba;Roll gyare-gyare shine extrusion + matsa lamba;Busa gyare-gyare dole ne ya bar kansa da bututun tsotsa, gyare-gyaren allura dole ne ya sami sashin ƙofa, yankan filastik mai jujjuyawa dole ne ya sami burr.

Busa gyare-gyaren mutu zane

2. Gabaɗaya magana, yin gyare-gyaren allura shine m core, busa gyare-gyare da kuma yi gyare-gyaren fanko ne.Injection sassa surface ne mai haske, busa da kuma yi filastik surface ne m.Busa gyare-gyare da mirgine kwatancen aƙalla busa gyare-gyare yana da busa baki.Wannan kwatancen gabaɗaya ne.Ina mamaki ko zaka iya ganewa!!

3. Raunin robobi da abubuwan da ke haifar da tasiri

Thermoplastics suna da mallakar faɗaɗa lokacin zafi, yin kwangila lokacin sanyaya, kuma ba shakka suna raguwa lokacin da aka matsa.A cikin aikin yin allura, za a fara allurar da narkakken robobin a cikin ramin, bayan an cika, sai a sanyaya narkakken kuma a daure, kuma raguwar na faruwa ne a lokacin da aka fitar da sassan robobin daga cikin kwandon, wanda ake kira forming shrinkage.Sassan filastik daga mold zuwa kwanciyar hankali na wannan lokacin, har yanzu za a sami ɗan ƙaramin canji a cikin girman, canjin zai ci gaba da raguwa, ana kiran wannan raguwar post-shrinkage.Wani bambancin shine fadada wasu robobi na hygroscopic saboda shayar da danshi.Misali, lokacin da abun ciki na ruwa na nailan 610 shine 3%, karuwar girman shine 2%;Lokacin da abun ciki na ruwa na gilashin fiber ƙarfafa nailan 66 shine 40%, girman girman shine 0.3%.Amma kafa raguwa yana taka muhimmiyar rawa.