Ukukhethwa kwamazinga okushisa ashubile e-PC steel induction heat furnace

(1) Umgomo wokukhetha izinga lokushisa lokushisa le-PC yensimbi Isakhiwo esihle kakhulu sensimbi ye-PC ngaphansi kwezimo zesevisi yi-troostite emnene. Le nhlangano inokumelana okuhle kakhulu nokuphumula kwengcindezi. Ubudlelwano obuphakathi kwamazinga okushisa okushisa kanye nezakhiwo zemishini yezinsimbi ezintathu eziphansi ze-alloy eziphakeme, eziphakathi nendawo neziphansi. I-tempered troostite ingatholakala ngokushisa emazingeni okushisa aphakathi (350 ~ 500 ° C), futhi isilinganiso sayo sokuphumula sincane kakhulu, okungukuthi, ukumelana nokuphumula kwengcindezi kungcono kakhulu. Ngakho-ke, i-PC yensimbi

Ukukhethwa kwethempelesha yokushisa ye- isithando sokushisa sangaphakathi Kumele iqinisekise ukuthi i-martensite evaliwe iguqulwa ibe yi-troostite, okusho ukuthi, ukufudumala okushisa okuphakathi kuyasetshenziswa. Ukushisa okushisa kwe-silicon ingot low-alloy PC steel induction heat fire is 400-500 ° C.

(2) Indlela yokumelana nengcindezi yokuphumula kwengcindezi yensimbi yePC Insimbi yokuphumula kwengcindezi yensimbi impahla yomshini ehlobene nempilo yesevisi yensimbi yePC. Kubhekisa enqubeni lapho ukuguquguquka kwensimbi nokunwebeka kuguqulwa kube ukusonteka kwepulasitiki ngaphansi kwengcindezi. Ngokushesha inqubo yenguquko, kukhula ukuguqulwa kwepulasitiki kwensimbi futhi kusondele kakhulu ekuqhekekeni. Lapho ukusonteka kwepulasitiki kufinyelela umkhawulo, insimbi iyaqhekeka. Ngakho-ke, kunethemba lokuthi uma ijubane lale nguquko liphansi, impilo yensimbi iyinde. Ngalesi sizathu, kuyinto efiselekayo ukuthi isilinganiso sokuphumula kwensimbi sincane ngangokunokwenzeka. Indlela ephumelelayo yokwehlisa izinga lokuphumula ukukhulisa amandla okuvuna nokugcina ukuqina okuhle. Ukumelana nokuphumula kwengcindezi yensimbi ye-PC kunobudlelwano obuncane nokwakheka kwayo kwamakhemikhali. Ngokuyinhloko kuya ngesakhiwo se-metallographic sensimbi eqediwe. Ukuhlaziywa kwemishini yokumelana nokuphumula kwengcindezi kwezinhlaka ezahlukahlukene ezinomsindo we-martensite ecishiwe kanjena.

I-tempered troostite ingumkhiqizo omnene emazingeni okushisa aphakathi nendawo futhi inokumelana okuhle kakhulu nokuphumula kwengcindezi. I-tempered troostite iyisakhiwo se-cementite esisakazeke kakhulu esisatshalaliswa emzimbeni wentambo yensimbi. Lolu hlobo lwe-microstructure lunikeza insimbi amandla okuvuna okuphezulu nobulukhuni obuthile, nokumelana okuqinile nokusonteka kwepulasitiki.

I-sorbite enomsindo ingumkhiqizo wokushisa okushisa okuphezulu, futhi ukumelana kwayo nokuphumula kwengcindezi kuncane kancane kunalokho kwe-troostite enomoya omnene. I-sorbite enomsindo isakhiwo esakhiwe nge-polygonal ferrite ne-cementite eyimbudumbudu. Amandla ayo aphakeme, kepha ngenxa yobukhulu bayo beplastiki nobulukhuni, ukumelana kwayo nokuguquguquka kwepulasitiki kubuthakathaka.

I-tempered martensite ingumkhiqizo onamazinga okushisa aphansi, futhi ukumelana kwayo nokuphumula kwengcindezi kubi kakhulu. Isizathu esikhulu ukuthi i-martensite enesixazululo yisisombululo esiqinile se-carbon e-ferrite. Yize amandla nobulukhuni bayo kuphakeme, inama-brittle, ayizinzile futhi ithambekele ekuguqulweni kwesakhiwo, okuholele ekumelaneni nokuphumula kokucindezeleka.

Ngokususelwa ekuhlaziyweni okungenhla, i-troostite emnene inezici zesakhiwo esizinzile nokufaniswa okufanele kwezakhiwo ezahlukahlukene zemishini, ukuze insimbi ikwazi ukumelana kahle nokuphumula kwengcindezi.