1. Izinyathelo zokuphepha zokusebenza kokushisela
Lapho kushiselwa, umsebenzi kufanele wenziwe ngokuqinile ngokwezinyathelo, ngaphandle kwalokho, ikhwalithi yokushiselwa izothinteka.
(1) Ubuso bezinto zokufaka amapayipi okuzoshintshwa kufanele buhlanzeke noma buvuthe. Umlomo ovuthe kufanele ube bushelelezi, uzungeze, ungabi nama-burrs nama-cracks, futhi ube nobukhulu obufanayo. Pholisha izihlanganisi zamapayipi ethusi okuzoshintshwa nge-sandpaper, bese ekugcineni uzisula ngendwangu eyomile. Ngaphandle kwalokho kuzothinta ukugeleza kwe-solder kanye nekhwalithi yokushintshwa.
(2) Faka amapayipi ethusi azoshintshwa ahambisana (qaphela usayizi), bese uqondanisa isikhungo sendilinga.
(3) Lapho kushiswa, izingxenye ezishisiwe kumele zishiswe. Shisa ingxenye yokushiswa yepayipi yethusi ngelangabi, futhi lapho ipayipi yethusi ishiswa ibe nsomi-bomvu, sebenzisa i-electrode yesiliva ukuyishisisa. Ngemva kokuba ilangabi selisusiwe, i-solder incike ejoyintini le-solder, ukuze i-solder incibilike futhi igeleze ezingxenyeni zethusi ezishisiwe. Izinga lokushisa ngemva kokushisa lingabonisa izinga lokushisa ngombala.
(4) Kungcono ukusebenzisa ilangabi elinamandla ukuze kufakwe i-welding esheshayo, futhi kufinyezwe isikhathi sokufaka i-welding ngangokunokwenzeka ukuze kuvinjelwe ukuthi kukhiqizwe ama-oxide amaningi epayipini. Ama-oxide azobangela ukungcola nokuvaleka ebusweni bokugeleza kwe-refrigerant, futhi abangele ngisho nomonakalo omkhulu kwi-compressor.
(5) Lapho uhlanganisa i-solder, lapho i-solder ingaqinanga ngokuphelele, ungalokothi ushukumise noma udlidlize ipayipi lethusi, ngaphandle kwalokho ingxenye ehlanganisiwe izoba nemifantu futhi ibangele ukuvuza.
(6) Kuhlelo lokuqandisa olugcwele i-R12, aluvunyelwe ukushisela ngaphandle kokukhipha amanzi esiqandisini se-R12, futhi akunakwenzeka ukwenza ukulungiswa kokushisela lapho uhlelo lokuqandisa lusavuza, ukuze kuvinjelwe isiqandisini se-R12 ekubeni nobuthi ngenxa yamalangabi avulekile. I-Phosgene inobuthi emzimbeni womuntu.
2. Indlela yokushisela yezingxenye ezahlukene
(1) Ukushisela izihlanganisi zamapayipi obubanzi besigaba
Uma ushisela amapayipi ethusi anobubanzi obufanayo ohlelweni lokuqandisa, sebenzisa ukushisela kwe-casing. Okusho ukuthi, ipayipi elishiselwe liyanwetshwa libe yindebe noma umlomo wensimbi, bese kufakwa elinye ipayipi. Uma ukufakwa kufushane kakhulu, ngeke kuthinte nje kuphela amandla nokuqina, kodwa futhi ukugeleza kuzogeleza kalula epayipini, okubangela ukungcola noma ukuvaleka; uma igebe phakathi kwamapayipi angaphakathi nangaphandle lincane kakhulu, ukugeleza akukwazi ukugeleza endaweni yokubeka futhi kungashiselwa kuphela ngaphandle kwe-interface. Amandla mancane kakhulu, futhi azoqhekeka futhi avuza uma ebhekene nokudlidliza noma amandla okugoba; uma igebe elihambisanayo likhulu kakhulu, ukugeleza kuzogeleza kalula epayipini, okubangela ukungcola noma ukuvaleka. Ngesikhathi esifanayo, ukuvuza kuzobangelwa ukungagcwalisi ukugeleza okunganele ku-weld, hhayi nje kuphela ikhwalithi Engalungile, kodwa futhi nokuchitha izinto. Ngakho-ke, kubaluleke kakhulu ukukhetha ubude bokufaka kanye negebe phakathi kwamapayipi amabili ngokufanele.
(2) Ukushisela ishubhu le-capillary kanye neshubhu lethusi
Lapho kulungiswa umshini wokomisa isihlungi wesistimu yokuqandisa, ithubhu le-capillary (ithubhu le-throttle capillary) kufanele lifakwe i-weld. Uma i-capillary ixhunywe kumshini wokomisa isihlungi noma kwamanye amapayipi, ngenxa yomehluko omkhulu kumadayamitha amabili amapayipi, amandla okushisa e-capillary mancane kakhulu, futhi isimo sokushisa ngokweqile sivame kakhulu ukwandisa uhlamvu lwe-metallographic lwe-capillary, oluba lukhuni futhi kube lula ukuluphula. Ukuze kuvinjelwe i-capillary ekushiseni ngokweqile, ilangabi lokushisisa igesi kufanele ligweme i-capillary futhi lenze lifinyelele izinga lokushisa lokushisisa ngesikhathi esifanayo nethubhu elijiyile. I-clip yensimbi ingasetshenziswa futhi ukubopha ishidi lethusi elijiyile kuthubhu le-capillary ukuze kwandiswe indawo yokushabalalisa ukushisa ngendlela efanele ukuze kugwenywe ukushisa ngokweqile.
(3) Ukushisela ipayipi le-capillary kanye ne-filter dryer
Ukujula kokufakwa kwe-capillary kufanele kulawulwe ngaphakathi kwama-5-15mm okuqala, ukuphela kokufakwa kwe-capillary kanye nokomisa isihlungi kufanele kube ngama-5mm ukusuka ekugcineni kwesikrini sesihlungi, kanti igebe elihambisanayo kufanele libe ngu-0.06 ~ 0.15mm. Ukuphela kwe-capillary kungcono kwenziwe nge-engeli engu-45° efana nesicathulo sehhashi ukuvimbela izinhlayiya zangaphandle ukuthi zingahlali ebusweni bokugcina futhi zibangele ukuvaleka.
Uma ububanzi bamapayipi amabili buhluke kakhulu, umshini wokomisa isihlungi ungachotshozwa nge-clamp yepayipi noma i-vise ukuze unciphise ipayipi langaphandle, kodwa i-capillary yangaphakathi ayikwazi ukucindezelwa (ifile). Okusho ukuthi, faka ipayipi le-capillary epayipini lethusi kuqala, bese ulicindezela nge-clamp yepayipi ebangeni elingama-10 mm ukusuka ekugcineni kwepayipi elijiyile.
(4) Ukushisela ipayipi lesiqandisi kanye nomsele we-compressor
Ukujula kwepayipi le-refrigerant elifakwe epayipini kumele kube ngu-10mm. Uma lingaphansi kuka-10mm, ipayipi le-refrigerant lizophuma kalula ngesikhathi sokushisa, okubangela ukuthi ukugeleza kuvimbe umlomo.
3. Ukuhlolwa kwekhwalithi yokushisela
Ukuze kuqinisekiswe ukuthi akukho ukuvuza engxenyeni ehlanganisiwe, ukuhlolwa okudingekayo kufanele kwenziwe ngemva kokushisela.
(1) Hlola ukuthi ukusebenza kokuvala kwe-weld kuhle yini. Ngemva kokufaka i-refrigerant noma i-nitrogen ukuze kuzinze isikhathi esithile, ingahlolwa ngamanzi anensipho noma ezinye izindlela.
(2) Uma umsebenzi wokufaka esiqandisini kanye nowokupholisa umoya usebenza, akufanele kuvunyelwe imifantu (imithungo) endaweni yokushisela ngenxa yokudlidliza.
(3) Ipayipi akufanele livalwe ngenxa yokungena kwemfucuza ngesikhathi sokushisela, futhi akufanele lingene emswakama ngenxa yokusebenza okungafanele.
(4) Lapho kufakwa isiqandisi kanye ne-air conditioner, ubuso bengxenye yokushisela kufanele buhlanzeke futhi bungabi namabala kawoyela.
Isikhathi sokuthunyelwe: Okthoba-23-2021