Chitsulo chosapanga dzimbiri momwe mungasankhire zinthu zowotcherera, kodi mukudziwadi?

Litikuwotcherera chitsulo chosapanga dzimbiri, ntchito ya electrode iyenera kufanana ndi cholinga cha chitsulo chosapanga dzimbiri.Elekitirodi yachitsulo chosapanga dzimbiri iyenera kusankhidwa molingana ndi zitsulo zam'munsi ndi malo ogwirira ntchito (kuphatikiza kutentha kwa ntchito, sing'anga yolumikizana, etc.).

Mitundu inayi yazitsulo zosapanga dzimbiri komanso zinthu zophatikizika zimagwiritsidwa ntchito

Chitsulo chosapanga dzimbiri chikhoza kugawidwa m'mitundu inayi: Austenitic, martensitic, ferritic ndi biphase chitsulo chosapanga dzimbiri, monga momwe tawonetsera mu Table 1.

Izi zimachokera ku metallographic dongosolo la zitsulo zosapanga dzimbiri kutentha.Pamene zitsulo zofatsa zimatenthedwa1550° F, kapangidwe kake kamasintha kuchokera pagawo la kutentha kwa chipinda kupita ku gawo la austenitic.Akazirala, chitsulo chofatsa chimasinthidwa kukhala ferrite.Zida za Austenitic zomwe zimapezeka pamatenthedwe apamwamba sizikhala ndi maginito ndipo zimakhala ndi mphamvu zochepa komanso zolimba kuposa zomwe zimatentha m'chipinda cha ferrite.

Kodi kusankha zoyenera zosapanga dzimbiri kuwotcherera chuma?

Ngati maziko ali ofanana, lamulo loyamba ndi "kufanana ndi zinthu zoyambira".Mwachitsanzo, sankhani zinthu zowotcherera310 or 316chitsulo chosapanga dzimbiri.

Pazowotcherera zida zofananira, mulingo wosankha zinthu zoyambira zomwe zili ndi ma alloying apamwamba amatsatiridwa.Mwachitsanzo, ngati 304 kapena 316 chitsulo chosapanga dzimbiri ndi welded, sankhani mtundu316.

Koma palinso ambiri omwe satsatira mfundo ya "matching base base" pamikhalidwe yapadera, ndiye kuti ndikofunikira "kuyang'ana tebulo losankha zinthu zowotcherera".Mwachitsanzo, lembani304zitsulo zosapanga dzimbiri ndiye zitsulo zodziwika bwino, koma palibe Mtundu304electrode.

Ngati kuwotcherera chuma chikufanana ndi zinthu m'munsi, mmene kusankha kuwotcherera chuma kuti kuwotcherera304chitsulo chosapanga dzimbiri?

Pamene kuwotcherera304zitsulo zosapanga dzimbiri, ntchito mtundu308kuwotcherera zinthu, chifukwa zinthu zowonjezera mu308zitsulo zosapanga dzimbiri zimatha kukhazikika bwino m'dera la weld.

308L ndi njira yovomerezeka.L amatanthauza kuchepa kwa carbon,3XXL zitsulo zosapanga dzimbiri za carbon ≤0.03%, ndi muyezo3 XX pazitsulo zosapanga dzimbiri zimatha kukhala mpaka0.08%zinthu za carbon.

Chifukwa kuwotcherera kooneka ngati L kuli kofanana ndi kuwotcherera komwe sikuli ngati L, opanga ayenera kuganizira kwambiri kugwiritsa ntchito kuwotcherera kooneka ngati L chifukwa mpweya wake wochepa umachepetsa chizolowezi cha dzimbiri (onani Chithunzi 1).

Kodi kuwotcherera zitsulo zosapanga dzimbiri ndi carbon zitsulo?

Kuti achepetse ndalama, zinthu zina zimawotcherera chitsulo chosanjikiza cha kaboni.Pamene kuwotcherera zinthu m'munsi popanda alloying zinthu ndi m'munsi zinthu ndi alloying zinthu, ntchito kuwotcherera zinthu ndi apamwamba aloyi zili kuti moyenera dilution mlingo mu weld.

Pamene kuwotcherera mpweya zitsulo ndi304 or 316zitsulo zosapanga dzimbiri ndi zitsulo zina zosapanga dzimbiri (onani Gulu 2),309L zinthu zowotchereraziyenera kuganiziridwa nthawi zambiri.Ngati mukufuna kupeza Cr yapamwamba, sankhani mtundu312.

Kodi ntchito yoyenera yotsuka pre-weld ndi iti?

Mukawotchera ndi zinthu zina, chotsani choyamba mafuta, zizindikiro ndi fumbi ndi zosungunulira zopanda chlorine.Komanso, chinthu choyamba kulabadira pamene kuwotcherera zitsulo zosapanga dzimbiri ndi kupewa kuipitsidwa ndi mpweya zitsulo ndi kukhudza kukana dzimbiri.Makampani ena amasunga zitsulo zosapanga dzimbiri ndi zitsulo za kaboni padera kuti apewe kuipitsidwa.Gwiritsani ntchito mawilo apadera opera ndi maburashi pazitsulo zosapanga dzimbiri poyeretsa malo ozungulira poyambira.Nthawi zina olowa amafunika kutsukidwanso kachiwiri.Chifukwa ntchito yolipirira ma elekitirodi pakuwotcherera zitsulo zosapanga dzimbiri ndizovuta kwambiri kuposa kuwotcherera zitsulo za kaboni, kuyeretsa kophatikizana ndikofunikira kwambiri.