Brazed akupera mutu

Malinga ndi mitundu yosiyanasiyana yosungunuka ya solder, brazing imatha kugawidwa kukhala yofewa komanso yolimba.

Soldering

Kusungunula kofewa: malo osungunuka a solder pazitsulo zofewa ndi otsika kuposa 450 ° C, ndipo mphamvu yolumikizana ndi yotsika (yosakwana 70 MPa).

Soldering yofewa imagwiritsidwa ntchito kwambiri pakuwotcherera kwa zida zamagetsi, zotchingira mpweya komanso zosalowa madzi m'mafakitale amagetsi ndi chakudya.Kuwotcherera malata okhala ndi tini-lead alloy monga zitsulo zodzaza ndizomwe zimagwiritsidwa ntchito kwambiri.Soft solder nthawi zambiri imayenera kugwiritsa ntchito flux kuchotsa filimu ya oxide ndikuwongolera kunyowa kwa solder.Pali mitundu yambiri ya ma solder fluxes, ndipo rosin alcohol solution nthawi zambiri imagwiritsidwa ntchito pogulitsa zamagetsi zamagetsi.Zotsalira za flux izi pambuyo kuwotcherera zilibe mphamvu zowononga pa workpiece, zomwe zimatchedwa non-corrosive flux.The flux ntchito kuwotcherera mkuwa, chitsulo ndi zipangizo zina wapangidwa zinc kolorayidi, ammonium kolorayidi ndi vaseline.Powotcherera aluminiyamu, fluoride ndi fluoroborate amagwiritsidwa ntchito ngati brazing fluxes, ndipo hydrochloric acid ndi zinc chloride amagwiritsidwanso ntchito ngati brazing fluxes.Zotsalira za fluxes pambuyo kuwotcherera zimakhala zowononga, zomwe zimatchedwa corrosive fluxes, ndipo ziyenera kutsukidwa pambuyo pa kuwotcherera.

Brazing

Brazing: malo osungunuka a zitsulo zopangira zitsulo ndipamwamba kuposa 450 ° C, ndipo mphamvu yolumikizirana ndiyokwera (yoposa 200 MPa).

Malumikizidwe a brazed ali ndi mphamvu zambiri, ndipo ena amatha kugwira ntchito kutentha kwambiri.Pali mitundu yambiri yazitsulo za brazing filler, ndipo aluminiyamu, siliva, mkuwa, manganese ndi nickel-based brazing filler zitsulo ndizomwe zimagwiritsidwa ntchito kwambiri.Chitsulo cha Aluminium base filler nthawi zambiri chimagwiritsidwa ntchito popanga zinthu za aluminiyamu.Ma solders opangidwa ndi siliva komanso amkuwa nthawi zambiri amagwiritsidwa ntchito popangira zida zamkuwa ndi chitsulo.Ogulitsa opangidwa ndi manganese komanso faifi tambala amagwiritsidwa ntchito kwambiri kuwotcherera zitsulo zosapanga dzimbiri, zitsulo zosagwira kutentha komanso zida za superalloy zomwe zimagwira ntchito pakutentha kwambiri.Palladium-based, zirconium-based and titanium-based solders amagwiritsidwa ntchito kwambiri pakuwotcherera zitsulo zokanizira monga beryllium, titaniyamu, zirconium, graphite ndi zoumba.Posankha zitsulo zodzaza, makhalidwe a zitsulo zoyambira ndi zofunikira pakugwira ntchito limodzi ziyenera kuganiziridwa.Brazing flux nthawi zambiri imakhala ndi ma chloride ndi ma fluoride azitsulo zamchere ndi zitsulo zolemera, kapena borax, boric acid, fluoroborate, ndi zina zambiri, zomwe zimatha kupangidwa kukhala ufa, phala ndi madzi.Lithium, boron ndi phosphorous amawonjezedwa kwa ogulitsa ena kuti apititse patsogolo luso lawo lochotsa filimu ya oxide ndi kunyowetsa.Tsukani zotsalirazo mutawotchera ndi madzi ofunda, citric acid kapena oxalic acid.

Zindikirani: Pamwamba pazitsulo zoyambira zitsulo ziyenera kukhala zoyera, kotero kuti flux iyenera kugwiritsidwa ntchito.Ntchito ya brazing flux ndikuchotsa ma oxides ndi zonyansa zamafuta pamwamba pa zitsulo zoyambira ndi zitsulo zodzaza, kuteteza kukhudzana pakati pa zitsulo zodzaza ndi chitsulo choyambira ku oxidation, ndikuwonjezera kunyowa ndi capillary fluidity ya chitsulo chodzaza.Malo osungunuka a flux adzakhala otsika kuposa a solder, ndipo kuwonongeka kwa zotsalira zotsalira pazitsulo zazitsulo ndi mgwirizano zidzakhala zochepa.Flux yomwe imagwiritsidwa ntchito kwambiri pakusokeretsa kofewa ndi rosin kapena zinc chloride solution, ndipo flux yomwe imagwiritsidwa ntchito kwambiri pakuwotcha ndi kusakaniza kwa borax, boric acid ndi alkaline fluoride.

Kugwiritsa ntchito ndikusintha mawonekedwe ndi kuwulutsa

Kuwotchera sikoyenera kuwotcherera zitsulo zonse ndi magawo olemetsa komanso osinthika.Amagwiritsidwa ntchito kwambiri popanga zida zolondola, zida zamagetsi, zida zachitsulo zofananira ndi zida zoonda kwambiri, monga zigawo za masangweji, zisa za uchi, ndi zina zambiri. Amagwiritsidwanso ntchito popanga waya wosiyanasiyana komanso zida zomangira simenti.Panthawi ya brazing, pambuyo pa kutsukidwa pamwamba pazitsulo zowonongeka, zimasonkhanitsidwa mu mawonekedwe ophatikizika, ndipo zitsulo zodzaza zimayikidwa pafupi ndi kusiyana kwa mgwirizano kapena mwachindunji mumpata olowa.Pamene workpiece ndi solder ndi kutentha kwa kutentha pang'ono kuposa kutentha kusungunuka kwa solder, solder idzasungunuka ndikunyowetsa pamwamba pa weldment.Chitsulo chodzaza madzi chidzayenda ndikufalikira motsatira msoko mothandizidwa ndi capillary action.Choncho, zitsulo zonyezimira ndi zodzaza zitsulo zimasungunuka ndikulowetsana wina ndi mzake kuti zikhale ndi alloy layer.Pambuyo pa condensation, mgwirizano wa brazed umapangidwa.

Brazing yakhala ikugwiritsidwa ntchito kwambiri pamakina, magetsi, zida, wailesi ndi madipatimenti ena.Zida za Carbide, zobowola, mafelemu anjinga, zosinthira kutentha, machubu ndi zotengera zosiyanasiyana;Popanga ma microwave waveguides, machubu apamagetsi ndi zida zamagetsi zamagetsi, brazing ndiyo njira yokhayo yolumikizira.

Makhalidwe a brazing:

Gudumu la diamondi lopukutira

Gudumu la diamondi lopukutira

(1) Kutentha kwa kutentha kwamoto kumakhala kochepa, cholumikizira ndi chosalala komanso chosalala, kusintha kwa microstructure ndi makina amawotchi ndi ochepa, mapindikidwewo ndi ochepa, ndipo kukula kwa workpiece ndikolondola.

(2) Ikhoza kuwotcherera zitsulo ndi zipangizo zosiyana popanda malire okhwima pa kusiyana kwa makulidwe a workpiece.

(3) Njira zina zowotchera zimatha kuwotcherera ma welds angapo nthawi imodzi, ndikuchita bwino kwambiri.

(4) Zida zopangira brazing ndizosavuta komanso ndalama zopangira ndizochepa.

(5) Mphamvu yolumikizirana ndi yotsika, kukana kutentha kumakhala koyipa, ndipo zofunika pakuyeretsa musanawotchererane ndizovuta, ndipo mtengo wa solder ndi wokwera mtengo.