Welding, eo hape e tsejoang e le welding kapa welding, ke mokhoa oa tlhahiso le theknoloji e sebelisang mocheso, mocheso o phahameng kapa khatello e phahameng ho kopanya tšepe kapa lisebelisoa tse ling tsa thermoplastic joalo ka polasetiki. Ho ea ka boemo ba tšepe ts'ebetsong ea welding le litšobotsi tsa ts'ebetso, mekhoa ea ho tjheseletsa e ka aroloa ka mekhahlelo e meraro: fusion welding, khatello ea khatello le brazing.
Fusion welding - ho futhumatsa lisebelisoa tse lokelang ho kopanngoa ho etsa hore li qhibilihe ka mokhoa o fokolang ho etsa letamo le qhibilihisitsoeng, 'me letamo le qhibilihisitsoeng lea pholile ebe le tiisa pele le kopanngoa. Haeba ho hlokahala, li-fillers li ka eketsoa ho thusa
1. Laser tjheseletsa
Ho tjheseletsa ka laser ho sebelisa lebone la laser le tsepamisitsoeng joalo ka mohloli oa matla ho otla sesebediswa sa mosebetsi ka mocheso bakeng sa welding. E ka tjheseletsa lisebelisoa tse fapaneng tsa tšepe le lisebelisoa tseo e seng tsa tšepe tse kang tšepe ea k'habone, tšepe ea silicon, aluminium le titanium le li-alloys tsa tsona, tungsten, molybdenum le litšepe tse ling tse refractory le litšepe tse sa tšoaneng, hammoho le lirafshoa, likhalase le polasetiki. Hajoale, e sebelisoa haholo ho lisebelisoa tsa elektroniki, sefofane, sefofane, li-reactor tsa nyutlelie le likarolo tse ling. Laser welding e na le litšobotsi tse latelang:
(1) Matla a matla a lebone la laser a phahame, ts'ebetso ea ho futhumatsa e khuts'oane haholo, manonyeletso a solder a nyane, sebaka se anngoeng ke mocheso se moqotetsane, deformation ea welding e nyane, 'me ho nepahala ha dimensional ho phahame;
(2) E ka tjheseletsa thepa eo ho leng thata ho e tjheseletsa ka mekgwa e tlwaelehileng ya ho tjheseletsa, e kang dimetale tse tjheseletsang tse kang tungsten, molybdenum, tantalum le zirconium;
(3) Litšepe tse se nang tšepe li ka chesetsoa moeeng ntle le khase e eketsehileng e sireletsang;
(4) Thepa e rarahane 'me litšenyehelo li phahame.
2. Ho chesoa ka khase
tjheseletso ea khase e sebelisoa haholo ho tjheseletsa lipoleiti tse tšesaane tsa tšepe, lisebelisoa tse tlase tse qhibilihang (litšepe tse se nang ferrous le lialloi tsa tsona), likarolo tsa tšepe le lisebelisoa tse thata tsa alloy, hammoho le ho lokisa tjheseletsa ea likarolo tse tsofetseng le tse lahliloeng, ho lokisa lelakabe la karolo. deformation, joalo-joalo.
3. Arc welding
E ka aroloa ka li-welding tsa arc tsa manual le welding e ka tlas'a metsi
(1) Ho tjheseletsa arc ka letsoho ho ka etsa welding ea maemo a mangata joalo ka welding e bataletseng, welding e otlolohileng, welding e otlolohileng le welding e holimo. Ho phaella moo, hobane lisebelisoa tsa ho cheselletsa li-arc lia nkeha ebile li bonolo ha li sebetsana, ts'ebetso ea welding e ka etsoa sebakeng leha e le sefe ka phepelo ea motlakase. E loketse bakeng sa tjheseletsa ea lisebelisoa tse fapaneng tsa tšepe, botenya bo fapaneng le libopeho tse fapaneng tsa sebopeho;
(2) Ho tjheseletsa arc ka metsing hangata ho loketse feela bakeng sa maemo a tjheseletsa a bataletseng, mme ha e a lokela ho tjheseletsa dipoleiti tse tshesane tse nang le botenya bo ka tlase ho 1mm. Ka lebaka la ho kenella ka botebo ha li-welding tsa arc, tlhahiso e phahameng le ts'ebetso e phahameng ea mochini, e loketse bakeng sa ho cheselletsa li-welds tse telele tsa meaho ea poleiti e mahareng le e teteaneng. Thepa e ka chesetsoang ka li-arc welding tse ka tlas'a metsi li entsoe ho tloha ho tšepe ea sebopeho sa k'habone ho isa ho tšepe e tlase ea alloy, tšepe e sa cheng, tšepe e sa cheseheng mocheso, joalo-joalo, hammoho le litšepe tse ling tse senang ferrous joalo ka li-alloys tse thehiloeng ho nickel, titanium. li-alloys, le li-alloys tsa koporo.
4. Ho chesoa ka khase
Arc welding e sebelisang khase e ka ntle e le sehare sa arc le ho sireletsa sebaka sa arc le welding e bitsoa gas shielded arc welding, kapa welding ea khase ka nako e khuts'oane. Hangata tjheseletsa ea motlakase ea khase e arotsoe ka eleketrode e sa qhibilihe (tungsten electrode) e nang le khase e sirelelitsoeng e sirelelitsoeng le ho qhibiliha electrode e sirelelitsoeng ka khase e sirelelitsoeng, oxidizing e sirelelitsoeng ka khase e sirelelitsoeng, tjheseletsa e sirelelitsoeng ea khase ea CO2 le khase ea tubular terata e sirelelitsoeng ho latela hore na elektrode e kolobisitsoe kapa che. eseng mme khase e sireletsang e fapane.
Har'a tsona, tjheseletsa e sirelelitsoeng ka khase e sa qhibilihe e ka sebelisoa bakeng sa ho cheselletsa hoo e batlang e le litšepe tsohle le lialloi, empa ka lebaka la theko ea eona e phahameng, hangata e sebelisoa bakeng sa ho cheselletsa litšepe tse se nang ferrous joalo ka aluminium, magnesium, titanium le koporo. hammoho le tšepe e sa hloekang le tšepe e sa keneleng mocheso. Ntle le melemo e meholo ea khase e sirelelitsoeng ea elektrode e sa qhibilihang (e ka chesetsoa maemong a fapaneng; e loketse bakeng sa ho cheselletsa litšepe tse ngata joalo ka litšepe tse senang ferrous, tšepe e sa jeleng paate, tšepe e sa keneleng mocheso, tšepe ea k'habone le tšepe ea motsoako) , E boetse e na le melemo ea ho potlakisa welding lebelo le phahameng deposition bokgoni.
5. Plasma arc welding
Li-arcs tsa plasma li sebelisoa haholo ho cheselletsa, ho penta le holim'a metsi. E ka tjheseletsa lisebelisoa tse tšesaane le tse tšesaane (tse kang litšepe tse tšesaane haholo tse ka tlase ho 1mm).
6. Electroslag welding
Electroslag welding e ka tjheseletsa litšepe tse fapaneng tsa sebopeho sa k'habone, litšepe tse matla a tlase a alloy, litšepe tse sa keneng mocheso le litšepe tsa alloy tse mahareng, 'me e sebelisitsoe haholo ho etsa liboiler, likepe tsa khatello, mechini e boima, lisebelisoa tsa metallurgic le likepe. Ho feta moo, tjheseletso ya electroslag e ka sebediswa bakeng sa ho tjheseletsa sebakeng se seholo le ho lokisa welding.
7. Ho tjheseletsa beam ea elektrone
Thepa ea elektrone beam welding e rarahane, e theko e boima, 'me e hloka tlhokomelo e phahameng; litlhoko tsa kopano tsa li-welld li phahame, 'me boholo bo lekanyelitsoe ke boholo ba kamore ea vacuum; Tšireletso ea X-ray ea hlokahala. Electron beam welding e ka sebelisoa ho tjheseletsa litšepe tse ngata le li-alloys le lisebelisoa tsa mosebetsi tse hlokang deformation e nyane le boleng bo holimo. Hajoale, ho cheselletsa beam ea elektrone ho se ho sebelisoa haholo lisebelisoa tse nepahetseng, limitara le liindasteri tsa elektroniki.
Brazing-Ho sebelisa thepa ea tšepe e nang le ntlha e tlaase ea ho qhibiliha ho feta tšepe ea motheo e le solder, ho sebelisa solder ea metsi ho kolobisa tšepe ea motheo, ho tlatsa lekhalo, le ho kopanya ka tšepe ea motheo ho lemoha ho hokahanya ha tšepe.
1. Ho besa malakabe:
Flame brazing e loketse bakeng sa ho chesoa ha lisebelisoa tse kang carbon steel, tšepe e entsoeng ka tšepe, koporo le li-alloys tsa eona. Lelakabe la oxyacetylene ke lelakabe le sebelisoang hangata.
2. Ho hanyetsa brazing
Resistance brazing e arotsoe ka ho futhumatsa ka ho toba le ho futhumatsa ka tsela e sa tobang. Mocheso o sa tobang oa ho hanyetsa brazing o loketse bakeng sa brazing ea li-weldments tse nang le phapang e kholo ea thepa ea thermophysical le phapang e kholo ea botenya. 3. Induction brazing: Induction brazing e khetholloa ka ho futhumala ka potlako, ho sebetsa hantle haholo, ho futhumatsa sebakeng seo, le ho iketsetsa habonolo. Ho latela mokhoa oa ts'ireletso, e ka aroloa ka brazing ea induction moeeng, brazing ea induction ka khase e sireletsang le brazing induction in vacuum.
Khatello ea ho cheseletsa - ts'ebetso ea welding e tlameha ho ba le khatello holim'a weldment, e arotsoeng ka ho hanyetsa welding le ultrasonic welding.
1. Ho hanyetsa tjheseletsa
Ho na le mekhoa e mene ea mantlha ea ho tjheseletsa, e leng welding, seam welding, projection welding le butt welding. Spot welding e loketse litho tsa poleiti e tšesaane e tekiloeng le e phuthoang e ka fetisetsoang, manonyeletso ha a hloke moea o kenang, 'me botenya bo ka tlase ho 3mm. Seam welding e sebelisoa haholo ho cheselletsa maqephe a meqomo ea oli, makotikoti, li-radiator, lifofane le litanka tsa mafura a koloi. Projection welding e sebelisoa haholo-holo bakeng sa ho tjheseletsa likarolo tsa tšepe ea khabone e tlase le tšepe e tlase ea alloy. Botenya bo loketseng ka ho fetesisa bakeng sa tjheseletso ea poleiti ke 0.5-4mm.
2. Ultrasonic welding
Ultrasonic welding ke molao-motheo o loketseng bakeng sa ho cheselletsa boholo ba thermoplastics.
Nako ea poso: Mar-29-2023
