Tej Yam Tsis Zoo Thiab Ua Li Cas?
Nto Cracks: Cov txheej txheem nruam casting / dov tsis raug, ua kom cov khoom seem (Cu)
Vuam Cracks: Tsis txaus preheating, damp vuam pas nrig, siab sulfur thiab phosphorus ntau ntau
Laminar Tearing: Z-axis sib txawv nyob rau hauv daim hlau tuab, welding ntau heev.
Yuav tiv thaiv Vuam Cracks li cas?
Xaiv qis-hydrogen vuam pas nrig (J507) thiab qhuav lawv.
Zoo preheat tuab daim hlau.
Tswj interpass kub (100-200 degree). Siv cov txheej txheem vuam tsim nyog los txo qis kev txwv.
Nws kim npaum li cas ntau dua Q235?
Feem ntau 10-20% kim dua vim tus nqi siab ntawm cov ntsiab lus alloying (Mn) thiab kev tswj nruj nruj.
Common Specification Range?
Thickness: 6-200 hli
Dav: 1500-3000mm
Ntev: 6000-12000mm (kev cai ntev muaj).
Yuav ua li cas kom paub qhov txawv ntawm Q345 thiab Q235 sai sai ntawm -site? EDM (Electrical Discharge Machining): Q345 produces denser and more branched sparks (higher manganese content). Hardness: Q345 muaj zog dua (kwv yees HB 140-180). Spectroscopy: Qhov tseeb tshaj plaws rau kev ntsuas Mn cov ntsiab lus (Q345> 1.0%).