Iziphene eziqhelekileyo zomphandle we iityhubhu ezingenamthungo (smls):

1. Isiphene sokusonga
Ukusabalalisa ngokungaqhelekanga: Ukuba i-slag yokungunda ihlala kwindawo yendawo phezu kwe-slab yokuphosa eqhubekayo, iziphene ezisongayo ezinzulu ziya kubonakala kumphezulu wangaphandle wetyhubhu eqengqelekayo, kwaye ziya kusasazwa ixesha elide, kwaye "iibhloko" ziya kubonakala kwiindawo ezithile zomphezulu. . Ubunzulu obusongelwayo betyhubhu eqengqelekayo bumalunga ne-0.5 ~ 1mm, kwaye isalathiso sokusonga sokuhanjiswa yi-40 ° ~ 60 °.

2. Isiphene esikhulu sokusonga
Ukuhanjiswa kwexesha elide: Iziphene zokuqhekeka kunye neziphene ezinkulu zokusonga zivela kumphezulu we-slab eqhubekayo yokuphosa, kwaye zisasazwa ngokude. Uninzi lwezinzulu ezisongelwayo kumphezulu weetyhubhu zentsimbi ezingenamthungo zimalunga ne-1 ukuya kwi-10 mm.

3. Iziphene ezincinci zokuqhekeka
Xa uvavanya iityhubhu zentsimbi ezingenamthungo, kukho iziphene ezingaphezulu kudonga lwangaphandle lomzimba wombhobho ongenakubonwa ngamehlo. Zininzi iziphene ezincinci zokusonga kumphezulu wombhobho wentsimbi ongenamthungo, ubunzulu obunzulu bumalunga ne-0.15mm, umphezulu wombhobho wentsimbi ongenamthungo ugqunywe ngumaleko we-iron oxide, kwaye kukho umaleko we-decarburization phantsi kwe-iron oxide, ubunzulu bumalunga ne-0.2mm.

4. Iziphene zomgca
Kukho iziphene zomgca kumphezulu ongaphandle wetyhubhu yentsimbi engenamthungo, kwaye iimpawu ezithile zibunzulu obunzulu, ukuvulwa okubanzi, umzantsi obonakalayo, kunye nobubanzi obuqhubekayo. Udonga lwangaphandle lwecandelo lomnqamlezo lombhobho wensimbi ongenamthungo lunokubonwa ngemikrwelo enobunzulu be-<1mm, ekwimo ye-groove. Emva kokunyanga ubushushu, kukho i-oxidation kunye ne-decarburization kumda we-groove yombhobho.

5. Iziphene zokonakala
Kukho iziphene zomngxuma ongekho nzulu kumphezulu ongaphandle wetyhubhu yentsimbi engenamthungo, enobukhulu obahlukeneyo kunye neendawo. Akukho oxidation, decarburization, kunye aggregation kunye inclusions ngeenxa emhadini; izicubu ezijikeleze umngxuma zicinezelwe phantsi kobushushu obuphezulu, kwaye iimpawu ze-rheological zeplastiki ziya kuvela.

6. Ukucima i-crack
Ukucima kunye nokushisa unyango lobushushu lwenziwa kwityhubhu yentsimbi engenamthungo, kwaye iintanda ze-longitudinal ezintle zivela kumphezulu ongaphandle, ezisasazwa ngemicu kunye nobubanzi obuthile.

Iziphene eziqhelekileyo zomgangatho wangaphakathi wetyhubhu ezingenamthungo:

1. Isiphene seconvex hull
Iimpawu ze-Macroscopic: Udonga lwangaphakathi lwetyhubhu yensimbi engenamthungo iye yasasaza ngokungaqhelekanga iziphene ezincinci ze-convex ze-longitudinal, kwaye ukuphakama kwezi ziphene ezincinci ze-convex malunga ne-0.2mm ukuya kwi-1mm.
Iimpawu zeMicroscopic: Kukho ikhonkco-ezifana ne-black-gray inclusions emsileni, phakathi kunye nokujikeleza i-convex hull kumacala omabini odonga lwangaphakathi lwecandelo lomnqamlezo wombhobho wentsimbi ongenamthungo. Olu hlobo lwekhonkco elimnyama-grey luqukethe i-calcium aluminate kunye nenani elincinci le-oxides edibeneyo (i-iron oxide, i-silicon oxide, i-magnesium oxide).

2. Isiphene esithe ngqo
Iimpawu ze-Macroscopic: Iziphene ezichanekileyo zivela kwiityhubhu zensimbi ezingenamthungo, ezinobunzulu obuthile kunye nobubanzi, obufana nemikrwelo.

Iimpawu zeMicroscopic: Imikrwelo eludongeni lwangaphakathi lomnqamlezo wetyhubhu yentsimbi engenamthungo ikwimo yegroove enobunzulu obuyi-1 ukuya kwe-2 cm. I-oxidative decarburization ayibonakali kumda we-groove. Izicubu ezijikelezayo ze-groove zineempawu ze-rheology yensimbi kunye ne-deformation extrusion. Kuya kubakho ii-microcracks ngenxa yobungakanani be-extrusion ngexesha lenkqubo yokulinganisa.