1.Precautions yekushanda welding
Kana welding, kuvhiyiwa kunofanira kuitwa zvakanyatsoenderana nematanho, kana zvisina kudaro, kunaka kwewelding kuchakanganiswa.
(1) Pamusoro pepombi zvinosungirirwa zvinofanira kunge zvakachena kana kupisa. Muromo wakatsva unofanirwa kuve wakatsetseka, wakatenderera, usina mabura uye wakatsemuka, uye yunifomu mukukora. Porisai majoini epombi yemhangura kuti apinzwe nejecha, uye pakupedzisira apukute nemucheka wakaoma. Zvikasadaro zvichakanganisa solder kuyerera uye soldering kunaka.
(2) Isai mapaipi emhangura kuti ave welded achipindirana (teerera kune saizi), uye gadzirisa pakati pedenderedzwa.
(3) Kana welding, welded zvikamu zvinofanira preheated. Pisai chikamu chepombi chemhangura nemurazvo wemoto, uye kana pombi yemhangura ichipisa kuita yepepuru-tsvuku, shandisa electrode yesirivheri kuigadzira. Mushure mekunge murazvo wabviswa, solder inotsamira pajoinhi rekutengesa, kuitira kuti solder inyunguduke uye inopinda muzvikamu zvemhangura zvakatengeswa. Iyo tembiricha mushure mekupisa inogona kuratidza tembiricha kuburikidza nemuvara.
4 Oxides inokonzeresa tsvina uye kuvharika pamwe nekuyerera kwepamusoro pefiriji, uye kunyange kukonzera kukuvadza kwakakomba kune compressor.
(5) Paunenge uchitengesa, kana solder isati yanyatsosimbiswa, usambozunungusa kana kuzunungusa pombi yemhangura, kana zvisina kudaro chikamu chakatengeswa chichava nekutsemuka uye kukonzera kubuda.
(6) Kune firiji system yakazadzwa neR12, haibvumirwi kukwirisa pasina kudonhedza R12 refrigerant, uye hazvibviri kuita gadziriso yewelding kana firiji ichiri kubuda, kuitira kudzivirira iyo R12 refrigerant kubva kune chepfu nekuda kwekuvhurwa kwemoto. Phosgene ine chepfu kumuviri wemunhu.
2. Welding nzira yezvikamu zvakasiyana
(1) Welding yechikamu dhayamita pombi fittings
Paunenge uchiputira pombi dzemhangura dzine dhayamita imwechete mufiriji system, shandisa casing welding. Ndiko kuti, iyo welded pombi inowedzerwa mukapu kana bhero muromo, uye ipapo imwe pombi inoiswa. Kana kuiswa kwacho kuri kupfupika, hakuzongokanganisa simba uye kusimba, asiwo kuyerera kuchayerera nyore mupombi, zvichikonzera kusvibiswa kana kuvhara; kana mukaha uripo pakati pepombi dzemukati nekunze uri diki zvakanyanya, iyo flux haigone kuyerera ichipinda mumudziyo wemukati uye inogona chete kusungirirwa kunze kweiyo interface. Simba racho harina kusimba, uye rinotsemuka nekudonha kana richinge rabatwa nekudedera kana kukotama simba; kana gaka rekufananidza rakanyanya kukura, iyo flux inoyerera nyore mupombi, ichikonzera kusvibiswa kana kuvhara. Panguva imwecheteyo, kuvuza kuchakonzerwa nekusakwana flux kuzadza mu weld, kwete chete kunaka Kwete kunaka, asiwo kutambisa zvinhu. Naizvozvo, zvakakosha zvakanyanya kusarudza kureba kwekupinza uye gaka pakati pemapombi maviri zvine musoro.
(2) Welding ye capillary chubhu uye mhangura chubhu
Paunenge uchigadzirisa sefa yekuomesa yefiriji system, iyo capillary chubhu (throttle capillary chubhu) inofanira kusungirirwa. Kana iyo capillary yakasungirirwa kune sefa yekuomesera kana mamwe mapaipi, nekuda kwekusiyana kukuru mumadhayamita epombi maviri, kupisa kwecapillary kudiki kwazvo, uye chiitiko chekupisa zvakanyanya kunowedzera kuwedzera metallographic tsanga yecapillary, inova brittle uye nyore kuputsika. Kuti udzivise iyo capillary kubva pakupisa, gasi welding murazvo unofanirwa kudzivirira iyo capillary uye iite kuti isvike pakudziya kwekudziya panguva imwechete sechubhu yakakora. Chidimbu chesimbi chinogona zvakare kushandiswa kusungirira pepa remhangura gobvu pane capillary chubhu kuwedzera nzvimbo yekupisa kupisa zvakakodzera kudzivirira kupisa.
(3) Welding ye capillary chubhu uye sefa dryer
Kudzika kwekupinza kwecapillary kunofanirwa kudzorwa mukati mekutanga 5-15mm, kuguma kwekupinza kwecapillary uye sefa yekuomesa inofanira kuva 5mm kubva kumucheto kwesefa skrini, uye gwanza rinoenderana rinofanira kuva 0.06 ~ 0.15mm. Kupera kwecapillary kwakanyatsogadzirwa kuita bhiza-yakaita 45 ° angle kudzivirira zvidimbu zvekunze kubva pakugara pamagumo uye zvichikonzera kuvhara.
Kana madhayamita epombi maviri asiyana zvakanyanya, sefa yekuomesa inogona zvakare kupwanywa nepombi clamp kana vise yekuisa kunze pombi, asi yemukati capillary haigone kudzvanywa (yakafa). Kureva kuti, isa capillary chubhu muchubhu yemhangura kutanga, woisvinira nepombi clamp iri chinhambwe che 10 mm kubva kumagumo echubhu gobvu.
(4) Welding yefiriji pombi uye compressor conduit
Kudzika kwepombi yefiriji yakaiswa mupombi inofanira kuva 10mm. Kana iri pasi pe10mm, pombi yefiriji inobuda nyore kunze panguva yekudziya, zvichiita kuti flux ivhare muromo.
3. Kuongororwa kwehutano hwekushongedza
Kuti uone kuti hapana kudonha pachikamu chakasungwa, kuongororwa kwakakodzera kunofanirwa kuitwa mushure mekucheka.
(1) Tarisa uone kana kuiswa chisimbiso kweweld kwakanaka. Mushure mekuwedzera refrigerant kana nitrogen kuti igadzikane kweimwe nguva yenguva, inogona kuongororwa nemvura ine sipo kana dzimwe nzira.
(2) Kana firiji uye air-conditioning oparesheni iri kushanda, hapana kuputika (seams) munzvimbo yewelding nekuda kwekudengenyeka kunofanirwa kubvumidzwa.
(3) Iyo pombi haifanirwe kuvharika nekuda kwemarara inopinda panguva yewelding, uye haifanirwe kupinda munyoro nekuda kwekusashanda zvakanaka.
(4) Kana firiji uye air-conditioning basa, pamusoro pechikamu chewelding chinofanira kunge chakachena uye chisina mavara emafuta.
Nguva yekutumira: Oct-23-2021