Q345ndi mtundu wa chitsulo chochepa cha alloy chomwe chimagwiritsidwa ntchito kwambiri m'milatho, magalimoto, zombo, nyumba, zotengera zokakamiza, zipangizo zapadera, ndi zina zotero, kumene "Q" imatanthauza mphamvu zokolola, ndipo 345 imatanthauza kuti mphamvu zokolola zachitsulo ichi ndi 345MPa.
Kuyesa kwachitsulo cha q345 kumaphatikizapo mbali ziwiri: choyamba, ngati chinthu chomwe chili muzitsulo chimafika pamtundu wa dziko; chachiwiri, ngati zokolola mphamvu, wamakokedwe mayeso, etc. zitsulo kukumana mfundo kudzera mabungwe akatswiri. Ili ndi aloyi yosiyana ndi q235, yomwe ndi chitsulo cha carbon wamba ndipo q345 ndi chitsulo chochepa cha alloy.
Gulu la zida za Q345
Q345 akhoza kugawidwa mu Q345A, Q345B, Q345C, Q345D ndi Q345E malinga ndi kalasi. Zomwe zimayimira makamaka kuti kutentha kwa zotsatira zake kumakhala kosiyana. Q345A mlingo, palibe zotsatira; Q345B mlingo, 20 digiri yachibadwa kutentha zotsatira; Q345C mlingo, 0 digiri zotsatira; Q345D mlingo, -20 digiri zotsatira; Q345E mlingo, -40 digiri zotsatira. Paziwopsezo zosiyanasiyana, zomwe zimakhudzidwa zimasiyananso.
zosiyana.
Kugwiritsa ntchito zinthu za Q345
Q345 ili ndi zida zabwino zamakina, zovomerezeka zotsika kutentha, pulasitiki yabwino komanso kuwotcherera. Amagwiritsidwa ntchito ngati zombo zapakatikati ndi zotsika, matanki amafuta, magalimoto, ma cranes, makina opangira migodi, malo opangira magetsi, milatho ndi zida zina, zida zamakina, zomanga, ndi zida zonse zomwe zimanyamula katundu wamphamvu. Zitsulo zomangira, zomwe zimagwiritsidwa ntchito potentha kapena zokhazikika, zitha kugwiritsidwa ntchito m'malo ozizirira pansi -40 ° C.