Njira Yophulitsira Gasi Woteteza

Pakalipano, pali njira ziwiri zazikulu zowomba mpweya wotetezera: imodzi ndi mpweya wotetezera mbali ya paraxial, monga momwe tawonetsera pa Chithunzi 1; Wina ndi mpweya woteteza coaxial.Kusankha kwapadera kwa njira ziwiri zowomba kumaganiziridwa m'zinthu zambiri.Nthawi zambiri, tikulimbikitsidwa kugwiritsa ntchito kuwomba mbali poteteza mpweya

paraxial kuwomba gasi chitetezo

coaxial kuwomba gasi chitetezo

Choyamba, ziyenera kuonekeratu kuti zomwe zimatchedwa weld ndi "oxidized" ndi dzina lodziwika bwino.Mwachidziwitso, amatanthauza kachitidwe ka mankhwala pakati pa weld ndi zinthu zovulaza mumlengalenga, zomwe zimapangitsa kuwonongeka kwa ubwino wa weld.Ndizofala kuti zitsulo zowotcherera zimachita ndi mpweya, nayitrogeni ndi haidrojeni mumlengalenga pa kutentha kwina.

Kuletsa weld kukhala "oxidized" ndikuchepetsa kapena kupewa kukhudzana ndi zinthu zovulaza zotere ndi chitsulo chowotcherera pakutentha kwambiri.Kutentha kwapamwamba kumeneku sikuli kokha chitsulo chosungunula cha dziwe, koma nthawi yonseyi kuyambira nthawi yomwe zitsulo zowotcherera zimasungunuka mpaka kulimba kwachitsulo cha dziwe ndi kutentha kwake kumachepetsedwa ndi kutentha kwina pansi.

Mwachitsanzo, titaniyamu aloyi kuwotcherera, pamene kutentha ndi pamwamba 300 ℃ mwamsanga kuyamwa haidrojeni, oposa 450 ℃ akhoza mwamsanga kuyamwa mpweya, oposa 600 ℃ akhoza msanga kuyamwa nayitrogeni, kotero titaniyamu aloyi kuwotcherera msoko pambuyo kulimba ndi kuchepetsa kutentha kwa 300 ℃ m'munsimu siteji imeneyi ayenera ogwira chitetezo zotsatira, apo ayi adzakhala "oxidized".

Kuchokera kufotokozedwa pamwambapa sikovuta kumvetsetsa, chitetezo cha mpweya wowomba sichingofunika panthawi yake kuteteza dziwe losungunuka la weld, komanso liyenera kukhala lotsekedwa ndi malo oundana a chitetezo, choncho nthawi zambiri kutengera paraxial yomwe ikuwonetsedwa mu chithunzi 1 mbali zotetezera. mpweya, chifukwa njira imeneyi poyerekeza ndi njira zotetezera chitetezo cha njira ya coaxial chitetezo cha chiwerengero 2 ndi ambiri, makamaka kwa weld basi olimba dera ali ndi chitetezo bwino.

Paraxial mbali ikuwomba kwa ntchito zaumisiri, sizinthu zonse zomwe zingagwiritse ntchito njira yamagetsi yoteteza mbali ya shaft, pazinthu zina zapadera, zitha kugwiritsa ntchito mpweya woteteza coaxial, zosowa zenizeni kuchokera pamapangidwe azinthu ndi kusankha kolumikizana kolumikizana.

1. Zowotcherera molunjika

Monga momwe tawonetsera pa Chithunzi 3, mawonekedwe a weld wa chinthucho ndi mzere wowongoka, ndipo mawonekedwe olowa amatha kukhala olowa m'matako, olowa m'chiuno, pakona yolakwika kapena kuwotcherera.Pazinthu zamtunduwu, ndikwabwino kutengera njira yakumbali yowuzira mpweya wodzitetezera monga momwe tawonera pachithunzi 1.

2. Lathyathyathya chatsekedwa zojambulajambula weld

Monga momwe tawonetsera pa Chithunzi 4, mawonekedwe owotcherera a mankhwalawa ndi mawonekedwe ozungulira ndege, mawonekedwe amtundu wamitundu yambiri, mawonekedwe a mzere wamitundu yambiri ndi mawonekedwe ena otsekedwa.Mawonekedwe olowa amatha kukhala olowa m'chiuno, olowa m'chiuno, kuwotchererana, ndi zina zotero.Pazinthu zamtunduwu, ndikwabwino kutengera njira yodzitchinjiriza ya coaxial yomwe ikuwonetsedwa pazithunzi 2.

Kusankhidwa kwa mpweya wotetezera kumakhudza kwambiri khalidwe la kuwotcherera, mphamvu ndi mtengo wa kupanga, koma chifukwa cha kusiyana kwa zinthu zowotcherera, mu ndondomeko yeniyeni yowotcherera, kusankha kwa mpweya wowotcherera kumakhala kovuta kwambiri, kumafunika kuganizira mozama za zinthu zowotcherera, njira yowotcherera. , kuwotcherera udindo, komanso zofunika za kuwotcherera zotsatira, kudzera mayesero kuwotcherera kusankha abwino kwambiri kuwotcherera mpweya, kuwotcherera kuti tikwaniritse zotsatira zabwino.

Gwero: Welding Technology