Ubuchwepheshe bokukhiqiza kwepuleti le-tungsten

I-powder metallurgy tungsten ivamise ukuba nokusanhlamvu okuhle, okungenalutho kwayo kuvame ukukhethwa yizinga lokushisa eliphezulu lokubumba kanye nendlela yokugoqa, izinga lokushisa ngokuvamile lilawulwa phakathi kuka-1500 ~ 1600 ℃.Ngemva kokungenalutho, i-tungsten ingaphinde igoqwe, ifojiwe noma iphothwe.Imishini yokucindezela imvamisa yenziwa ngaphansi kwezinga lokushisa le-recrystallization, ngoba imingcele yokusanhlamvu ye-tungsten eyenziwe kabusha i-brittle, ekhawulela ukusebenza.Ngakho-ke, ngokwanda kwenani eliphelele lokucubungula i-tungsten, izinga lokushisa lokuguqulwa liyehla ngendlela efanayo.
I-Tungsten plate rolling ingahlukaniswa ibe ukugoqa okushisayo, ukugoqa okufudumele nokugoqa okubandayo.Ngenxa yokumelana okukhulu kwe-deformation ye-tungsten, ama-roller ajwayelekile awakwazi ukuhlangabezana ngokuphelele nezidingo zamapuleti e-tungsten, kuyilapho ama-rollers enziwe ngezinto ezikhethekile kufanele asetshenziswe.Enqubweni yokugoqa, ama-roller adinga ukushiswa ngaphambili, futhi izinga lokushisa langaphambi kokushisa lingu-100 ~ 350 ℃ ngokuvumelana nezimo ezihlukene zokugoqa.Izikhala zingenziwa ngomshini kuphela uma ukuminyana okuhlobene (isilinganiso sokuminyana kwangempela kuya ku-theoretical density) ingaphezulu kuka-90%, futhi inokucutshungulwa okuhle kokuminyana okungama-92~94%.Izinga lokushisa le-tungsten slab liyi-1,350 ~ 1,500℃ ohlelweni olushisayo lokugoqa;uma imingcele yenqubo ye-deformation ikhethwe ngendlela engafanele, izikhala zizokwelulwa.Izinga lokushisa lokuqala lokugoqa elifudumele lingu-1,200 ℃;Amapuleti ajingiwe anogqinsi ongu-8mm angafinyelela ubukhulu obungu-0.5mm ngokuginqika okufudumele.Amapuleti e-Tungsten aphakeme ngokumelana nokuguquguquka, futhi umzimba we-roller ungagoba futhi ukhubazeke enqubweni yokuginqika, ngakho-ke amapuleti azokwakha ukushuba okungewona umfaniswano ngokuhambisana nobubanzi, futhi angase aqhekeke ngenxa yokungaguquguquki okungefani kwabo bonke. izingxenye ekushintsheni kwe-roller noma inqubo yokushintshanisa isigayo.Izinga lokushisa le-brittle-ductile transition lamapuleti angu-0.5mm-thick yizinga lokushisa legumbi noma lingaphezulu kwegumbi lokushisa;nge-brittleness, amashidi kufanele asongwe abe amashidi awugqinsi ongu-0.2mm ekushiseni okungama-200 ~ 500℃.Esikhathini sakamuva sokugoqa, amashidi e-tungsten mancane futhi amade.Ukuqinisekisa ukushisa okufanayo kwamapuleti, i-graphite noma i-molybdenum disulphide ivame ukumbozwa, okungazuzisi nje ukushisa kwamapuleti kodwa futhi ibe nomthelela wokugcoba enqubweni yomshini.