Chitsulo chamalata nthawi zambiri chimakhala wosanjikiza wa zinki wokutidwa kunja kwa chitsulo chochepa cha carbon, ndipo zokutira zinki nthawi zambiri zimakhala 20μm wandiweyani. Malo osungunuka zinki ndi 419 ° C ndipo malo owira ndi pafupifupi 908 ° C.
Chowotchereracho chiyenera kupukutidwa chisanawotchedwe
The kanasonkhezereka wosanjikiza pa weld ayenera opukutidwa, apo ayi thovu, mchenga mabowo, kuwotcherera zabodza, etc. adzakhala kwaiye. Zimapangitsanso weld kukhala brittle ndikuchepetsa kukhazikika.
Kuwunika kwa mawonekedwe a kuwotcherera zitsulo zamalata
Pa kuwotcherera, zinki amasungunuka kukhala madzi ndikuyandama pamwamba pa dziwe losungunuka kapena pamizu ya weld. Zinc imakhala ndi kusungunuka kwakukulu mu chitsulo. Zinc yamadzimadzi imawononga kwambiri chitsulo chowotcherera m'malire a tirigu, ndipo zinc yotsika kwambiri ipanga "liquid metal embrittlement".
Panthawi imodzimodziyo, zinki ndi chitsulo zimatha kupanga intermetallic brittle compounds. Magawo opundukawa amachepetsa pulasitiki ya chitsulo chowotcherera ndikutulutsa ming'alu pansi pa kupsinjika kwakanthawi.
Ma weld fillet welds, makamaka fillet welds a T-joints, amatha kutulutsa ming'alu. Pamene kanasonkhezereka ndi welded, nthaka wosanjikiza pa poyambira pamwamba ndi m'mphepete adzakhala oxidize, kusungunula, nthunzi mu zochita za arc kutentha, ndi volatilize utsi woyera ndi nthunzi, amene mosavuta kuyambitsa weld porosity.
ZnO yopangidwa ndi okosijeni imakhala ndi malo osungunuka kwambiri, pamwamba pa 1800 ° C. Ngati magawowo ali ochepa kwambiri pakuwotcherera, kuphatikizidwa kwa slag kwa ZnO kudzachitika. Panthawi imodzimodziyo, popeza Zn imakhala deoxidizer, FeO-MnO kapena FeO-MnO-SiO2 otsika osungunuka a oxide slag adzapangidwa. Kachiwiri, chifukwa cha kutuluka kwa zinki, utsi wambiri woyera udzasungunuka, zomwe zidzakwiyitsa ndikuvulaza thupi la munthu. Choncho, wosanjikiza malata pa malo owotcherera ayenera kupukutidwa.
Zida zowotcherera za Xinfa zili ndi mawonekedwe apamwamba komanso otsika mtengo. Kuti mudziwe zambiri, chonde pitani:Opanga Kuwotcherera & Kudula - China Welding & Cutting Factory & Suppliers (xinfatools.com)
Kodi kulamulira kanasonkhezereka zitsulo kuwotcherera ndondomeko?
The pre-kuwotcherera kukonzekera zitsulo kanasonkhezereka ndi chimodzimodzi ndi wamba zitsulo otsika mpweya. Ndikofunika kusamalira mosamala kukula kwa poyambira ndi gawo lapafupi la malata. Kuti muwotchere, kukula kwa poyambira kuyenera kukhala koyenera, nthawi zambiri 60 ° ~ 65 °. Mpata wina uyenera kusiyidwa, nthawi zambiri 1.5 ~ 2.5mm. Pofuna kuchepetsa kulowa kwa zinki mu weld, wosanjikiza malata mu poyambira akhoza kuchotsedwa pamaso kuwotcherera.
M'ntchito yeniyeni yoyang'anira, kupanga poyambira pakati komanso osayang'ana m'mphepete mwake kumagwiritsidwa ntchito poyang'anira pakati. Kuwotcherera kwa zigawo ziwiri kumachepetsa kuthekera kwa kuwotcherera kosakwanira.
Ndodo yowotcherera iyenera kusankhidwa malinga ndi maziko a chitoliro cha galvanized. Nthawi zambiri, J422 imagwiritsidwa ntchito kwambiri ngati chitsulo chochepa cha carbon chifukwa chosavuta kugwira ntchito.
Njira yowotcherera: Mukawotcherera gawo loyamba la zowotcherera zamitundu ingapo, yesani kusungunula nthaka yosanjikiza ndi nthunzi ndi nthunzi kuthawa kuwotcherera, zomwe zingachepetse kwambiri nthaka yamadzimadzi yotsalira mu weld.
Mukawotcherera zowotcherera fillet, yesetsani kusungunula wosanjikiza wa zinc mu gawo loyamba ndikupangitsa kuti asungunuke ndi kusungunula kuthawa kuwotcherera. Njirayi ndikusunthira kumapeto kwa elekitirodi kutsogolo za 5 ~ 7mm, ndiyeno kubwerera ku malo oyambirira ndikupitiriza kuwotcherera patsogolo pambuyo wosanjikiza nthaka kusungunuka.
Mu kuwotcherera kopingasa komanso koyima, ngati ma elekitirodi amfupi a slag monga J427 amagwiritsidwa ntchito, chizolowezi choluma m'mphepete chidzakhala chaching'ono kwambiri. Ngati teknoloji yosuntha ya kumbuyo ndi kutsogolo ikugwiritsidwa ntchito, zimakhala zosavuta kupeza chowotcherera chopanda chilema.
Nthawi yotumiza: Sep-05-2024
