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 uvuthwe.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 (nikela ingqalelo kubungakanani), kwaye ulungelelanise umbindi wesangqa.
(3) Xa i-welding, iindawo ezidibeneyo kufuneka zifudunyezwe.Fudumeza inxalenye yentsimbi yombhobho wobhedu ngedangatye, kwaye xa umbhobho wobhedu ufudunyezwa ube ngumfusa-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 eliqinileyo ukuwelda ngokukhawuleza, kwaye unciphise ixesha lokuwelda kangangoko ukuthintela ukuveliswa kweeoksidi ezigqithisileyo kumbhobho.Ii-oksidi ziya kubangela ukungcola kunye nokuvaleka ecaleni komphezulu wokuhamba kwefriji, kwaye zenze umonakalo omkhulu kwi-compressor.
(5) Xa i-solder ingaqini ngokupheleleyo, ungaze ushukumise okanye ushukumise umbhobho wobhedu, kungenjalo indawo edibeneyo iya kuba neentanda kwaye ibangele ukuvuza.
(6) Kwinkqubo yefriji ezaliswe yi-R12, akuvumelekanga ukuwelda ngaphandle kokukhupha i-R12 yefriji, 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 kunye ne-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 idityanisiwe kwisixhobo sokucoca okanye eminye imibhobho, ngenxa yomahluko omkhulu kwiidayamitha ezimbini zombhobho, umthamo wobushushu we-capillary umncinci kakhulu, kwaye isenzeko sokushisa ngokugqithiseleyo sithambekele kakhulu ekunyuseni ingqolowa ye-metallographic ye-capillary. , eba yibrittle 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 umbane uvale umlomo.
3. Ukuhlolwa komgangatho we-welding
Ukuze kuqinisekiswe ukuba akukho kuvuza ngokupheleleyo kwindawo edibeneyo, uhlolo oluyimfuneko kufuneka lwenziwe emva kwe-welding.
(1) Khangela 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.
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Ixesha lokuposa: Oct-23-2021