1.Izilumkiso zokusebenza kwe-welding
Xa u-welding, umsebenzi kufuneka uqhutywe ngokungqongqo ngokwamanyathelo, ngaphandle koko, umgangatho we-welding uya kuchaphazeleka.
(1) Umphezulu wezixhobo zokudibanisa umbhobho kufuneka ucoceke okanye ugqabhuke. Umlomo ovuthayo kufuneka ube mpuluswa, ungqukuva, ungabi namaqhuma kunye neentanda, kunye nobukhulu obufanayo. Gcoba imibhobho yobhedu ukuze idityaniswe nge-sandpaper, kwaye ekugqibeleni uyisule ngelaphu elomileyo. Ngaphandle koko kuya kuchaphazela ukuhamba kwe-solder kunye nomgangatho we-soldering.
(2) Faka imibhobho yobhedu ukuba idityaniswe ngokugqithelana (nika ingqalelo kubungakanani), kwaye ulungelelanise umbindi wesangqa.
(3) Xa i-welding, iindawo ezidibeneyo kufuneka zifudunyezwe. Fudumeza indawo yokuwelda yombhobho wobhedu ngedangatye, kwaye xa umbhobho wobhedu ufudunyezwa bumfusa-bomvu, sebenzisa i-electrode yesilivere ukuyidibanisa. Emva kokuba ilangatye lisusiwe, i-solder ixhomekeke kwi-solder joint, ukuze i-solder inyibilike kwaye ihambe kwiindawo zobhedu ezithengiswayo. Iqondo lokushisa emva kokufudumeza lingabonakalisa ubushushu ngombala.
(4) Kungcono ukusebenzisa idangatye elomeleleyo ukuwelda ngokukhawuleza, kwaye unciphise ixesha lokuwelda kangangoko ukuthintela ukuveliswa kweeoksidi ezigqithisileyo kumbhobho. Ii-oksidi ziya kubangela ukungcola kunye nokuvaleka ecaleni komphezulu wefriji, kwaye zibangele umonakalo omkhulu kwicompressor.
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(6) Kwinkqubo yefriji ezaliswe yi-R12, akuvumelekanga ukuwelda ngaphandle kokukhupha amanzi efrijini i-R12, kwaye akunakwenzeka ukwenza ukulungiswa kwe-welding xa inkqubo yefriji isavuza, ukuze kuthintelwe i-refrigerant ye-R12 ekubeni yityhefu ngenxa yomlilo ovulekileyo. I-Phosgene inetyhefu emzimbeni womntu.
2. Indlela yokuwelda kwiindawo ezahlukeneyo
(1) Ukufakwa kwe-welding yesigaba sombhobho we-diameter
Xa udibanisa imibhobho yobhedu kunye nobubanzi obufanayo kwinkqubo yefriji, sebenzisa i-casing welding. Oko kukuthi, umbhobho odibeneyo uyandiswa kwikomityi okanye emlonyeni wentsimbi, kwaye ke enye ipayipi ifakwe. Ukuba ukufakwa kufutshane kakhulu, akuyi kuchaphazela kuphela amandla kunye nokuqina, kodwa kwakhona i-flux iya kuhamba ngokulula kumbhobho, kubangele ukungcola okanye ukuvala; ukuba i-gap phakathi kwemibhobho yangaphakathi nangaphandle incinci kakhulu, i-flux ayikwazi ukuhamba kwindawo yokukhusela kwaye inokudityaniswa kuphela ngaphandle kwe-interface. Amandla abi kakhulu, kwaye aya kuqhekeka kwaye avuze xa ephantsi kwe-vibration okanye amandla okugoba; ukuba i-gap ehambelanayo inkulu kakhulu, i-flux iya kuhamba ngokulula kumbhobho, ibangele ukungcola okanye ukuvala. Ngexesha elifanayo, ukuvuza kuya kubangelwa ukungonelanga kokuzaliswa kwe-flux kwi-weld, kungekhona nje umgangatho Akulunganga, kodwa kunye nokuchithwa kwezinto. Ngoko ke, kubaluleke kakhulu ukukhetha ubude bokufaka kunye nomsantsa phakathi kwemibhobho emibini ngokufanelekileyo.
(2) I-Welding ye-capillary tube kunye ne-tube tube
Xa ulungisa i-drier yokucoca inkqubo yefriji, ityhubhu ye-capillary (i-throttle capillary tube) kufuneka idityaniswe. Xa i-capillary idityaniswe kwisixhobo sokucoca isihluzi okanye eminye imibhobho, ngenxa yomahluko omkhulu kwiidayamitha ezimbini zombhobho, umthamo wobushushu we-capillary uncinci kakhulu, kwaye isenzeko sokushisa ngokugqithiseleyo sithambekele kakhulu ekunyuseni ingqolowa ye-metallographic ye-capillary, eyaba yi-brittle kwaye kulula ukuyiqhawula. Ukuze uthintele i-capillary ekugqithiseni, i-gas welding flame kufuneka igweme i-capillary kwaye iyenze ifikelele kubushushu be-welding ngexesha elifanayo ne-tube enzima. Ikliphu yentsimbi ingasetyenziselwa ukucinezela ishidi lobhedu elishinyeneyo kwityhubhu ye-capillary ukunyusa indawo yokulahla ubushushu ngokufanelekileyo ukunqanda ukutshisa.
(3) I-Welding ye-capillary tube kunye ne-filter drier
Ubunzulu bokufakwa kwe-capillary kufuneka ilawulwe ngaphakathi kwe-5-15mm yokuqala, isiphelo sokufakwa kwe-capillary kunye nesomisi sokucoca kufuneka sibe yi-5mm ukusuka ekupheleni kwesikrini sokucoca, kunye ne-gap ehambelanayo kufuneka ibe yi-0.06 ~ 0.15mm. Isiphelo se-capillary senziwe kakuhle kwi-angle ye-horseshoe-shaped 45 ° ukukhusela amaqhekeza angaphandle ukuba ahlale kwindawo yokugqibela kwaye abangele ukuvala.
Xa i-diameters yepayipi emibini ihluke kakhulu, i-drier yokucoca inokutyunyuzwa kunye ne-pipe clamp okanye i-vise ukuze ifake umbhobho wangaphandle, kodwa i-capillary yangaphakathi ayikwazi ukucinezelwa (ifile). Oko kukuthi, faka ityhubhu ye-capillary kwi-tube yobhedu kuqala, kwaye uyicinezele nge-clamp yombhobho kumgama we-10 mm ukusuka ekupheleni kombhobho obunzima.
(4) I-Welding yombhobho wefriji kunye ne-compressor conduit
Ubunzulu bombhobho wefriji ofakwe kumbhobho kufuneka ube ngu-10mm. Ukuba ingaphantsi kwe-10mm, umbhobho wefriji uya kuhamba ngokulula ngaphandle ngexesha lokufudumeza, okubangela ukuba umbhobho uvale umlomo.
3. Ukuhlolwa komgangatho we-welding
Ukuze kuqinisekiswe ukuba akukho kuvuza ngokupheleleyo kwinxalenye edibeneyo, uhlolo oluyimfuneko kufuneka lwenziwe emva kwe-welding.
(1) Jonga ukuba umsebenzi wokutywina weld ulungile. Emva kokufaka ifriji okanye initrogen ukuze izinze ixesha elithile, inokuvavanywa ngamanzi anesepha okanye ezinye iindlela.
(2) Xa ukusebenza kwefriji kunye ne-air-conditioning kusebenza, akukho zintanda (i-seams) kwindawo ye-welding ngenxa yokunyakaza kufuneka kuvunyelwe.
(3)Umbhobho akufuneki uvalwe ngenxa yobutyobo obungena ngexesha lokuwelda, kwaye akufuneki ungene ukufuma ngenxa yokungasebenzi kakuhle.
(4) Xa umsebenzi wefriji kunye ne-air-conditioning, umphezulu wecandelo le-welding kufuneka ucoceke kwaye ungabi namabala eoli.
Ixesha lokuposa: Oct-23-2021