Kungani i-high carbon steel kunzima ukuyishisela?

I-High Carbon Steel inokushisela okungekuhle ngenxa yokuqukethwe kwayo kwekhabhoni ephezulu.Izici ze-welding zimi kanje:
(1)i-thermal conductivity ebuthakathaka, umehluko obalulekile wezinga lokushisa phakathi kwendawo yokushisela kanye nengxenye engashisi.Lapho ichibi elincibilikisiwe liphola kakhulu, ukucindezeleka kwangaphakathi ku-weld kungakha imifantu kalula.
(2)izwela kakhulu ekucimeni futhi i-martensite yakheka kalula endaweni eseduze nomthungo.Ngenxa yesenzo sokucindezeleka kwesakhiwo, indawo eseduze ne-seam ikhiqiza ukuqhekeka okubandayo.
(3)ngenxa yethonya lokushisa eliphezulu, okusanhlamvu kukhula ngokushesha, i-carbide kulula ukunqwabelana futhi ikhule emngceleni wokusanhlamvu, okwenza i-weld ibe buthaka futhi amandla okuhlangana okushisela anciphe.
(4) insimbi enekhabhoni ephezulu inamathuba amaningi okuthi ikhiqize imifantu eshisayo kunensimbi ye-carbon steel
Insimbi ye-carbon ephezulu iwuhlobo lwensimbi ye-carbon ene-w (c) > 0.6%.Inomkhuba omkhulu wokuqina nokwenza i-carbon martensite ephezulu kune-medium carbon steel, futhi izwela kakhulu ukwakheka kwemifantu ebandayo.

Ngesikhathi esifanayo, isakhiwo se-martensite esakhiwe ku-HAZ sinezici ezinzima futhi ezinobunzima, okuholela ekunciphiseni kwe-plasticity nokuqina kokuhlangana.Ngakho-ke, i-weldability yensimbi ephezulu ye-carbon impofu kakhulu, futhi inqubo yokushisela ekhethekile kufanele yamukelwe, ukuze kuqinisekiswe ukusebenza kwesixhumi.
Ngakho-ke, esakhiweni se-welding, ngokuvamile akuvamile ukusetshenziswa.Insimbi ye-carbon ephezulu isetshenziselwa ikakhulukazi izingxenye zomshini ezidinga ubulukhuni obuphezulu nokumelana nokugqoka, njengama-rotary shafts, amagiya amakhulu nama-couplings.
Ukuze ulondoloze insimbi nokwenza lula ubuchwepheshe bokucubungula, lezi zingxenye zomshini zivame ukwakhiwa ngesakhiwo esishiselwe.Ekwenziweni kwemishini esindayo, izingxenye eziphezulu ze-carbon steel nazo zizohlangabezana nezinkinga zokushisela.
Lapho wenza inqubo yokushisela yezingxenye eziphezulu ze-carbon steel, kuyadingeka ukuhlaziya zonke izinhlobo zokukhubazeka okungenzeka kwe-welding futhi uthathe izinyathelo ezihambisanayo zenqubo yokushisela.