Q345he ʻano kila haʻahaʻa haʻahaʻa i hoʻohana nui ʻia i nā alahaka, nā kaʻa, nā moku, nā hale, nā moku kaomi, nā lako kūikawā, a me nā mea ʻē aʻe, kahi "Q" ke ʻano o ka ikaika hua, a ʻo 345 ke ʻano o ka ikaika hua o kēia kila he 345MPa.
ʻO ka hoʻāʻo ʻana o ke kila q345 e pili ana i ʻelua mau ʻano: ʻo ka mua, inā paha e hiki ana ka nui o nā mea o ke kila i ke kūlana aupuni; ʻo ka lua, inā paha e kūlike ka ikaika hua, ka hoʻāʻo tensile, a me nā mea ʻē aʻe o ke kila i nā kūlana ma o nā ʻoihana ʻoihana. He ʻokoʻa kona nui o ka metala mai ka q235, ʻo ia ke kila kalapona maʻamau a ʻo ka q345 he kila metala haʻahaʻa.
Ka Hoʻokaʻawale ʻana o nā mea Q345
Hiki ke hoʻokaʻawale ʻia ʻo Q345 i Q345A, Q345B, Q345C, Q345D a me Q345E e like me ke ʻano. ʻO ka mea nui a lākou e hōʻike nei, ʻo ia ka ʻokoʻa o ka mahana o ka hopena. Pae Q345A, ʻaʻohe hopena; Pae Q345B, hopena mahana maʻamau 20 degere; Pae Q345C, hopena 0 degere; Pae Q345D, hopena -20 degere; Pae Q345E, hopena -40 degere. Ma nā mahana hopena like ʻole, ʻokoʻa pū nā waiwai hopena.
ʻokoʻa.
Ka hoʻohana ʻana i ka mea Q345
Loaʻa iā Q345 nā waiwai mechanical piha maikaʻi, ka hana wela haʻahaʻa i ʻae ʻia, ka plasticity maikaʻi a me ka weldability. Hoʻohana ʻia ia ma ke ʻano he mau ipu haʻahaʻa a me ke kaomi waena, nā pahu aila, nā kaʻa, nā crane, nā mīkini mining, nā kikowaena mana, nā alahaka a me nā hale ʻē aʻe, nā ʻāpana mīkini, nā hale kūkulu, a me nā hale maʻamau e halihali ana i nā ukana dynamic. Hiki ke hoʻohana ʻia nā ʻāpana kūkulu metala, i hoʻohana ʻia i nā kūlana wela a i ʻole nā ​​​​kūlana maʻamau, no nā hale like ʻole ma nā wahi anuanu ma lalo o -40°C.