labarai

Saboda dankowar ultra high-molecular weight polyethylene (UHMW-PE) a cikin narkakkar yanayi ya kai 108Pa*s, yawan ruwa yana da matukar talauci, kuma ma'aunin narkewar sa ya kusan sifili, yana da wahala a sarrafa shi ta hanyar injina gabaɗaya. .Ultrahigh kwayoyin nauyi polyethylene (UHMW-PE) aiki fasahar da aka sauri ɓullo da, ta hanyar da canji na talakawa aiki kayan aiki, ya sanya ultrahigh kwayoyin nauyi polyethylene (UHMW-PE) daga farko latsa - sintering gyare-gyaren ci gaba zuwa extrusion, busa gyare-gyare da allura. gyare-gyare da sauran hanyoyi na musamman na gyare-gyare.
Hanyar gabaɗaya
1. Latsawa da karkatar da hankali
(1) Latsawa da sintering shine mafi ainihin hanyar sarrafa nau'in polyethylene mai girma mai girma (UHMW-PE).Samar da ingancin wannan hanya yana da ƙasa kaɗan, kuma iskar shaka da lalata suna da sauƙin faruwa.Domin inganta ingantaccen samarwa, ana iya amfani da dumama wutar lantarki kai tsaye
(2) Ultra-high speed fusion sarrafa hanyar, ta yin amfani da nau'in mahaɗar ruwa, matsakaicin saurin jujjuya ruwa zai iya kaiwa 150m/s, ta yadda abu zai iya tashi zuwa zafin aiki a cikin 'yan daƙiƙa kaɗan.
2. Extrusion gyare-gyare
Extrusion gyare-gyaren kayan aikin yafi hada da plunger extruder, dunƙule extruder guda da kuma tagwaye dunƙule extruder.Twin-screw extruder yawanci ana amfani da shi a hanya guda mai jujjuyawar tagwayen dunƙule extruder.
A cikin shekarun 1960s, an yi amfani da mafi yawan kayan aikin plunger.A tsakiyar shekarun 1970, Japan, Amurka da Jamus ta Yamma sun ci gaba da ci gaba da aiwatar da tsari guda ɗaya.Kamfanin Mitsui Petrochemical na Japan ya fara samun nasarar fasahar extrusion na zagaye sanda a 1974. A karshen 1994, φ45 nau'in ultra-high kwayoyin nauyi polyethylene (UHMW-PE) na musamman guda dunƙule extruder da aka ɓullo da, da kuma nasarar φ65 irin guda daya. dunƙule extruder bututu masana'antu samar line aka samu a 1997.
(3) Gyaran allura
Mitsui Petrochemicals sun haɓaka tsarin yin gyare-gyaren allura a cikin 1974 kuma sun sayar da shi a cikin 1976, sannan ta hanyar yin gyare-gyaren dunƙule gyare-gyare.A cikin 1985, Hoechst kuma ya fahimci tsarin gyare-gyaren allura na UHMW-PE.A cikin 1983, an gyara na'urar allurar XS-ZY-125A ta gida.An yi nasarar allurar polyethylene mai nauyi mai girma na kwayoyin halitta (UHMW-PE) da kuma hannun axle don famfo na ruwa don layin samar da gwangwani na giya cikin nasara.A cikin 1985, an kuma yi nasarar allurar haɗin gwiwar wucin gadi don amfani da magani cikin nasara.
(4) busa gyare-gyare
Ultra-high kwayoyin nauyi polyethylene (UHMW-PE) aiki, a lokacin da abu extrusion daga bakin mutu, saboda na roba dawo da wani shrinkage, kuma kusan babu sagging sabon abu, don haka m kwantena, musamman manyan kwantena, kamar man tanki. gyare-gyaren ganga don ƙirƙirar yanayi masu kyau.Ultrahigh kwayoyin nauyi polyethylene (UHMW-PE) busa gyare-gyaren kuma iya haifar da wani babban yi fim tare da daidaita ƙarfi a tsaye da kuma a kwance shugabanci, wanda warware matsalar da cewa ƙarfin HDPE fim ba m a cikin a tsaye da kuma a kwance shugabanci ga wani. dogon lokaci kuma yana da sauƙin haifar da lalacewa ta tsaye.