Q345C haʻahaʻa wela kila paipu maoli wahi
Mānoanoa o ka pā papa mm elongation δ 5 ≥%% ka ikaika hua δ S (MPA ≥) wela hoao ℃
Q345A ≤ 16 21 345 ʻaʻole pono
Q345B ≤16 21 345 20
Q345C 16-35 22 ≥325 0
Papa C Si Mn PSV NB Al Ti
Q345A ≤0.20 ≤0.55 ≤1.70 ≤0.045 ≤0.045 0.02-0.15 0.015-0.060 0.02-0.20
Q345B ≤0.20 ≤0.55 ≤1.70 ≤0.040 ≤0.040 0.02-0.15 0.015-0.060 0.02-0.20
Q345C ≤0.20 ≤0.55 ≤1.70 ≤0.035 ≤0.035 0.02-0.15 0.015-0.060 ≥0.015 0.02-0.20
ʻO ka mea nui ma muli o nā ʻokoʻa kalapona a me ka manganese:
Q235-A
ʻO ke kalapona C: 0.14 ~ 0.22; Mn: 0.30 ~ 0.65;
Q235-B
ʻIke kalapona C: 0.12 ~ 0.20; Mn: 0.30 ~ 0.70;
Hoʻohana ʻia ia i nā ʻāpana carburized a i ʻole cyanide me nā koi ikaika haʻahaʻa, e like me ke koʻokoʻo huki, koʻokoʻo hoʻohui, makau, bolt, shaft a me ka weldment.
Pono nā kapu i ka mahana!
ʻOi aku ka Q345E. He ʻumi degere ma lalo o ka ʻole.
Eia kekahi, ke hoʻohālikelike ʻia me ka maʻamau kahiko, ʻo ke koi ʻoi loa o ka maʻamau hou e hoʻoponopono i ka ʻike Mn i ke kila mai 1.0-1.60 a i ≤ 1.70, a hoʻopau i ka palena palena liʻiliʻi o ≥ 1.0.
ʻO ka paipu kila Q345C kekahi o nā mea o ka paipu kila.
ʻO Q345A, Q345B, Q345C, Q345D a me Q345E nā māka maikaʻi. Hoʻonui lākou mai ka a i ka e, ma muli o ka ʻokoʻa o ka wela hopena i hoʻokumu ʻia e nā mea like ʻole o nā mea micro e like me ka phosphorus a me ka sulfur, e hōʻike ana i ka ʻokoʻa o ka hopena hopena a me nā waiwai mechanical o ka hoʻohuihui kemika paipu.
Q345A, ʻaʻohe hopena; Q345B, 20 ° ka hopena wela maʻamau; Q345C, 0 degere ka hopena; Q345D, he - 20 degere ka hopena; ʻO Q345E - 40 degere ka hopena. Ma nā wela hopena like ʻole, ʻokoʻa nā koina hopena.
ʻAʻole emi ka ikaika o ka hua ma mua o 345mp, a ke hōʻike nei ka pae maikaʻi i loko o nā mea haumia (carbon, manganese, silicon, sulfur a me phosphorus). ʻO ka nui o nā mea haumia (element) i ke kila. ʻO ka hope o ka A, B, C a me D, ʻoi aku ka liʻiliʻi o ka maʻi haumia
Loaʻa i ka Q345A ka phosphorus a me ka sulfur ma lalo a i ʻole like me 0.045%
Loaʻa i ka Q345B ka phosphorus a me ka sulfur ma lalo a i ʻole like me 0.040%
Loaʻa i ka Q345C ka phosphorus a me ka sulfur ma lalo a i ʻole like me 0.035%
Loaʻa i ka Q345D ka phosphorus a me ka sulfur ma lalo a i ʻole like me 0.030%
Loaʻa i ka Q345E ka phosphorus a me ka sulfur ma lalo a i ʻole like me 0.025%
ʻOi aku ka nui o ka phosphorus a me ka sulfur i loko o ke kila, ʻoi aku ka maikaʻi o ka paʻakikī o ka hopena
Q345A
Q345B Akv ʻaʻole emi ma lalo o 34 ma 20 ℃
Ma Q345C 0 ℃, Akv ʻaʻole e emi ma lalo o 34
Q345D - Akv ʻaʻole emi ma lalo o 34 ma 20 ℃
Ma Q345E - 40 ℃, ʻaʻole emi ka Akv ma lalo o 27
ʻO ke kumu hope loa, ʻo ka emi ʻana o ka P a me nā haumia i loko o ke kila e hoʻoikaika i ka hoʻomaikaʻi ʻana i ka paʻakikī o ka hopena i ka haʻahaʻa haʻahaʻa. ʻO kekahi ka mea hana kemika o Q345 a ʻo ka mea ʻē aʻe ka waiwai mechanical o Q345
C≤0.2%，Mn 1.0-1.6%，
ʻO ≤0.55%,
S ≤0.35%,
P ≤0.35%,
V 0.02-0.15%,
Nb 0.015-0.06%,
Ti 0.02-0.2%,
AL ≥0.015%
ʻO nā waiwai mechanical:
Ka ikaika hana: ≥ 345mpa (ka mānoanoa ma lalo o 16mm)
Ka ikaika tensile: 470-630mpa
Elongation: 22%
Ka ikehu hopena: ≥ 34j (ka wela hoao 0 °)
180 ° ho'āʻo piko:
D = 2A (ka mānoanoa ma lalo o 16mm)
Ka ikaika hana: ≥ 345mpa (ka mānoanoa ma lalo o 16mm)
Ka ikaika tensile: 470-630mpa
Elongation: 22%
Ka ikehu hopena: ≥ 34j (ka wela hoao 0 °)
180 ° ho'āʻo piko:
D = 2A (ka mānoanoa ma lalo o 16mm)
