Q345C ubushushu obuphantsi umbhobho wentsimbi indawo yokwenene
Ubude bodonga lodidi mm ubude δ 5 ≥%% amandla esivuno δ S (MPA ≥) lobushushu bovavanyo ℃
Q345A ≤ 16 21 345 ayifuni
Q345B ≤16 21 345 20
Q345C 16-35 22 ≥325 0
IBanga 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
Ikakhulu ngenxa yezinto ezahlukeneyo zekhabhoni kunye nemanganese:
Q235-A
Umxholo weCarbon C: 0.14 ~ 0.22; Mnu: 0,30 ~ 0.65;
Q235-B
Umxholo weCarbon C: 0.12 ~ 0.20; Mnu: 0,30 ~ 0.70;
Isetyenziswa kwiindawo ze-carburized okanye ze-cyanide ezineemfuno zamandla asezantsi, ezifana nentonga yokutsala, intonga yokudibanisa, ihuku, ibholithi, i-shaft kunye ne-weldment.
Kufuneka kubekho izithintelo kwiqondo lokushisa!
Ngokukodwa i-Q345E. Amashumi amadigri ngaphantsi kweqanda.
Ukongezelela, xa kuthelekiswa nomgangatho omdala, imfuno ecacileyo kakhulu yomgangatho omtsha kukulungelelanisa umxholo we-Mn kwintsimbi ukusuka kwi-1.0-1.60 ukuya kwi-≤ 1.70, kwaye ukhansele umda wexabiso elincinci le-≥ 1.0.
Umbhobho wensimbi we-Q345C yenye yezinto zombhobho wensimbi.
I-Q345A, i-Q345B, i-Q345C, i-Q345D kunye ne-Q345E ngamabakala asemgangathweni. Bayanda ukusuka ku-a ukuya ku-e, ikakhulu ngenxa yokumahluko kwiqondo lokushisa elibangelwa yimixholo eyahlukeneyo yezinto ezincinci ezifana ne-phosphorus kunye nesulfure, emele umahluko kwimpembelelo yobushushu kunye neempawu zomatshini zemibhobho yokwakheka kweekhemikhali.
Q345A, akukho mpembelelo; I-Q345B, i-20 ° impembelelo yeqondo lokushisa eliqhelekileyo; I-Q345C, impembelelo ye-0 degree; I-Q345D, yi-20 degree impembelelo; I-Q345E yi - impembelelo ye-40 degree. Kumaqondo obushushu eempembelelo ezahlukeneyo, amaxabiso eempembelelo nawo ahlukile.
Q amandla okuvelisa angaphantsi kwe-345mp, kwaye ibakala lomgangatho libonisa ukuba liqukethe izinto ezingcolileyo (ikhabhoni, i-manganese, i-silicon, isulfure kunye ne-phosphorus). Ngaba ubungakanani bokungcola (izinto) kwintsimbi. Kamva i-A, B, C kunye no-D, iyancipha umxholo wokungcola
I-Q345A iqulethe zombini i-phosphorus kunye nesulfure ngaphantsi okanye ilingana ne-0.045%
I-Q345B iqulethe zombini i-phosphorus kunye nesulfure ngaphantsi okanye ilingana ne-0.040%
I-Q345C iqulethe zombini i-phosphorus kunye nesulfure ngaphantsi okanye ilingana ne-0.035%
I-Q345D iqulethe zombini i-phosphorus kunye nesulfure ngaphantsi okanye ilingana ne-0.030%
I-Q345E iqulethe zombini i-phosphorus kunye nesulfure ngaphantsi okanye ilingana ne-0.025%
Ubuninzi be-phosphorus kunye ne-sulfure engcolileyo kwintsimbi, iyancipha ngakumbi ukuqina kwempembelelo
Q345A
Q345B Akv hayi ngaphantsi kwe 34 ngo 20 ℃
Kwi-Q345C 0 ℃, i-Akv ayiyi kuba ngaphantsi kwe-34
Q345D - Akv hayi ngaphantsi kwe 34 ngo 20 ℃
Kwi-Q345E - 40 ℃, i-Akv ayikho ngaphantsi kwe-27
Isizathu sokugqibela kukuba ukunciphisa ukungcola kwe-P kunye ne-s kwintsimbi kukhuthaza ukuphuculwa kokuqina kwempembelelo kwiqondo lokushisa eliphantsi. Enye yikhemikhali ye-Q345 kwaye enye yimpawu zemishini ye-Q345
C≤0.2%, Mn 1.0-1.6%,
Si ≤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%
Iimpawu zoomatshini zezi:
Amandla esivuno: ≥ 345mpa (ukutyeba ngaphantsi kwe-16mm)
Amandla okuqina: 470-630mpa
Elongation: 22%
Amandla empembelelo: ≥ 34j (uvavanyo lobushushu 0 °)
180 ° uvavanyo lokugoba:
D = 2A (ukutyeba ngaphantsi kwe-16mm)
Amandla esivuno: ≥ 345mpa (ukutyeba ngaphantsi kwe-16mm)
Amandla okuqina: 470-630mpa
Elongation: 22%
Amandla empembelelo: ≥ 34j (uvavanyo lobushushu 0 °)
180 ° uvavanyo lokugoba:
D = 2A (ukutyeba ngaphantsi kwe-16mm)
