Itekhnoloji yokucoca i-cryogenic defiashing yaqalwa ngeminyaka yoo-1950. Kwinkqubo yophuhliso lwee-cryogenic defiashing machines, idlule kumaxesha amathathu abalulekileyo. Landela eli nqaku ukuze ufumane ukuqonda ngokubanzi.
(1) Umatshini wokuqala wokucoca ulwelo oluyi-cryogenic
Idrama eqandisiweyo isetyenziswa njengesitya sokusebenza kwimiphetho eqandisiweyo, kwaye umkhenkce owomileyo ukhethwa ekuqaleni njengefriji. Iindawo eziza kulungiswa zifakwa kwidrama, mhlawumbi kongezwe ezinye izixhobo zokusebenza ezingqubanayo. Ubushushu ngaphakathi kwidrama bulawulwa ukuze bufikelele kwimeko apho imiphetho ibuthathaka ngelixa imveliso ngokwayo ingachaphazeleki. Ukuze kufezekiswe le njongo, ubukhulu bemiphetho kufuneka bube yi-≤0.15mm. Idrama yeyona nto iphambili kwisixhobo kwaye inesimo esilinganayo. Eyona nto ibalulekileyo kukulawula indawo yokuchaphazeleka kwezixhobo ezikhutshiweyo, okuvumela ukuba ukujikeleza kwegazi kwenzeke ngokuphindaphindiweyo.
Idrama ijikeleza ngokuchasene newotshi ukuze idilike, kwaye emva kwexesha elithile, imiphetho yeflash iyaqhekeka kwaye inkqubo yokuqukuqela igqityiwe. Isiphene semiphetho eqandisiweyo yesizukulwana sokuqala yimiphetho engaphelelanga, ingakumbi imiphetho yeflash eseleyo eziphelweni zomgca wokuqukuqela. Oku kubangelwa kuyilo olunganelanga lwesikhunta okanye ubukhulu obugqithisileyo bomaleko ngerabha kumgca wokuqukuqela (ongaphezulu kwe-0.2mm).
（2）Umatshini wesibini wokucoca i-cryogenic
Umatshini wesibini wokucoca i-cryogenic wenze uphuculo oluthathu olusekelwe kwisizukulwana sokuqala. Okokuqala, i-refrigerant itshintshwa ibe yi-nitrogen engamanzi. Umkhenkce owomileyo, one-sublimation point ye--78.5°C, awufanelekanga kwiirabha ezithile ezibuthathaka eziphantsi kobushushu, njengerabha ye-silicone. I-nitrogen engamanzi, ene-bolling point ye--195.8°C, ifanelekile kuzo zonke iintlobo zerabha. Okwesibini, kwenziwe uphuculo kwisikhongozeli esibamba iindawo eziza kunqunyulwa. Itshintshwa ukusuka kwidrama ejikelezayo ukuya kwibhanti yokuhambisa efana nombhobho njengesithwali. Oku kuvumela iindawo ukuba zidilike emngxunyeni, kunciphisa kakhulu ukuvela kwamabala afileyo. Oku akuphuculi nje kuphela ukusebenza kakuhle kodwa kuphucula nokuchaneka kokuqukuqela. Okwesithathu, endaweni yokuxhomekeka kuphela ekungqubaneni phakathi kwamalungu ukususa imiphetho ye-flash, kungeniswa imidiya yokuqhumisa ecolekileyo. Iipellets zesinyithi okanye zeplastiki ezinzima ezinobukhulu be-particle obuyi-0.5~2mm zidutyulwa kumphezulu wamalungu ngesantya esilinganayo se-2555m/s, kudala amandla amakhulu okuchaphazela. Olu phuculo lunciphisa kakhulu ixesha lomjikelo.
（3） Umatshini wesithathu wokucoca i-cryogenic
Umatshini wesithathu wokucoca i-cryogenic deflashing uphuculo olusekelwe kwisizukulwana sesibini. Isikhongozeli seendawo eziza kunqunyulwa sitshintshwa sibe yibhasikithi yeenxalenye eneendonga ezineembobo. Le mingxuma igubungela iindonga zebhasikithi enobubanzi obumalunga ne-5mm (obukhulu kunobubanzi bee-projectiles) ukuvumela ii-projectiles ukuba zidlule kwimingxuma kakuhle kwaye ziwele phezulu kwezixhobo ukuze zisetyenziswe kwakhona. Oku akugcini nje ngokwandisa amandla asebenzayo esikhongozeli kodwa kukwanciphisa nomthamo wokugcina we-impact media (projectiles). Ibhasikithi yeenxalenye ayibekwanga ngokuthe nkqo kumatshini wokusika, kodwa inomthambekelo othile (40°~60°). Le engile yokuthambekela ibangela ukuba ibhasikithi ijike ngamandla ngexesha lenkqubo yokuqukumbela ngenxa yokudibana kwamandla amabini: enye ngamandla okujikeleza anikezelwa yibhasikithi ngokwayo xa iwela, kwaye enye ngamandla e-centrifugal aveliswa yi-projectile impact. Xa la mandla mabini edityanisiwe, kwenzeka intshukumo ye-360° omnidirectional, evumela iindawo ukuba zisuse imiphetho ye-flash ngokulinganayo nangokupheleleyo kuzo zonke iindlela.
Ixesha lokuthumela: Agasti-08-2023
