Izinkinga ezivamile zangaphandle ze amashubhu angenamthungo (smls):

1. Isici sokugoqa
Ukusatshalaliswa okungajwayelekile: Uma isikhunta sihlala endaweni endaweni ye-cast slab eqhubekayo, amaphutha okugoqa ajulile azovela ngaphandle kweshubhu eligoqiwe, futhi azosatshalaliswa ngobude, futhi "amabhulokhi" azovela kwezinye izingxenye zomhlaba. .Ukujula okugoqayo kweshubhu eligoqiwe cishe ku-0.5 ~ 1mm, futhi isiqondiso sokugoqa sokusabalalisa singama-40° ~ 60°.

2. Isici esikhulu sokugoqa
Ukusatshalaliswa kwe-longitudinal: Amaphutha e-crack kanye namaphutha amakhulu okugoqa avela ebusweni be-casting slab eqhubekayo, futhi asakazwa ngobude.Iningi lokushona okugoqekayo ebusweni bamashubhu ensimbi angenamthungo cishe ku-1 kuya ku-10 mm.

3. Amaphutha emifantu emincane
Lapho kuhlolwa amashubhu ensimbi angenamthungo, kuneziphambeko ezingaphezulu odongeni olungaphandle lomzimba wepayipi ongeke wabonwa ngamehlo anqunu.Kunamaphutha amaningi amancane okugoqa ebusweni bepayipi lensimbi elingenamthungo, ukujula okujulile cishe ku-0.15mm, ingaphezulu lepayipi lensimbi elingenamthungo limbozwe ungqimba lwe-iron oxide, futhi kukhona ungqimba lwe-decarburization ngaphansi kwe-iron oxide, ukujula cishe ku-0.2mm.

4. Amaphutha emigqa
Kunokukhubazeka komugqa endaweni engaphandle yeshubhu lensimbi engenamthungo, futhi izici ezithile ziwukujula okungashoni, ukuvuleka okubanzi, iphansi elibonakalayo, nobubanzi obungashintshi.Udonga lwangaphandle lwengxenye ephambanayo yepayipi lensimbi engenamthungo lungabonakala ngokuklwebheka okunokujula okungu-<1mm, okusesimweni se-groove.Ngemuva kokwelashwa kokushisa, kukhona i-oxidation kanye ne-decarburization emaphethelweni e-groove yepayipi.

5. Izibazi zokukhubazeka
Kunamaphutha omgodi ongashoni endaweni engaphandle yeshubhu lensimbi engenamthungo, enosayizi abahlukene nezindawo.Akukho oxidation, decarburization, kanye aggregation kanye inclusions ezizungeze umgodi;izicubu ezizungeze umgodi zicindezelwa ngaphansi kokushisa okuphezulu, futhi izici ze-rheological zepulasitiki zizovela.

6. Ukucisha umfantu
Ukwelashwa kokushisa okucishayo nokushisa kwenziwa ku-tube yensimbi engenamthungo, futhi imifantu emihle ye-longitudinal ibonakala endaweni yangaphandle, esakazwa ngemichilo enobubanzi obuthile.

Izinkinga ezivamile zangaphakathi zangaphakathi zamashubhu angenamthungo:

1. Ukukhubazeka kwesikhumba esiyiconvex
Izici ze-macroscopic: Udonga lwangaphakathi lweshubhu yensimbi engenamthungo lusabalalise ngokungahleliwe amaphutha amancane ama-longitudinal convex, futhi ukuphakama kwalezi zinkinga ezincane ze-convex cishe ku-0.2mm kuya ku-1mm.
Izici ezincane kakhulu: Kukhona okuhlanganisiwe okufana neketango elimnyama-mpunga emsileni, maphakathi nendawo ezungezile ye-convex hull ezinhlangothini zombili zodonga lwangaphakathi lwengxenye ephambanayo yepayipi lensimbi engenamthungo.Lolu hlobo lweketango elimnyama-grey liqukethe i-calcium aluminate kanye nenani elincane lama-oxide ahlanganisiwe (i-iron oxide, i-silicon oxide, i-magnesium oxide).

2. Isici esiqondile
Izici zeMacroscopic: Amaphutha ohlobo oluqondile avela kumashubhu ensimbi angenamthungo, anobubanzi obuthile nobubanzi, obufana nokuklwebheka.

Izici ezincane kakhulu: Imihuzuko odongeni lwangaphakathi lwengxenye ephambanayo yeshubhu lensimbi engenamthungo isesimweni se-groove ejulile ngo-1 kuya ku-2 cm.I-oxidative decarburization ayiveli emaphethelweni e-groove.Izicubu ezizungezile ze-groove zinezici ze-rheology yensimbi kanye ne-deformation extrusion.Kuzoba nama-microcracks ngenxa ye-size extrusion ngesikhathi senqubo yokulinganisa.