Q345C otsika kutentha zitsulo chitoliro chenicheni malo
Grade khoma makulidwe mm elongation δ 5 ≥%% zokolola mphamvu δ S (MPA ≥) mayeso kutentha ℃
Q345A ≤ 16 21 345 sikufunika
Q345B ≤16 21 345 20
Q345C 16-35 22 ≥325 0
Kalasi 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
Makamaka chifukwa cha zinthu zosiyanasiyana za carbon ndi manganese:
Q235-A
Mpweya wa carbon C: 0,14 ~ 0,22; Mn: 0,30 ~ 0,65;
Q235-B
Mpweya wa carbon C: 0,12 ~ 0.20; Mn: 0,30 ~ 0,70;
Imagwiritsidwa ntchito pazigawo za carburized kapena cyanide zokhala ndi zofunikira zochepa zamphamvu, monga kukoka ndodo, ndodo yolumikizira, mbedza, bawuti, shaft ndi weldment.
Payenera kukhala zoletsa kutentha!
Makamaka Q345E. Makumi a madigiri pansi pa ziro.
Kuphatikiza apo, poyerekeza ndi muyezo wakale, chofunikira kwambiri chodziwikiratu cha muyezo watsopano ndikusintha zomwe zili mu Mn muzitsulo kuchokera ku 1.0-1.60 mpaka ≤ 1.70, ndikuchotsa malire amtengo wapatali a ≥ 1.0.
Q345C zitsulo chitoliro ndi chimodzi mwa zipangizo za chitoliro zitsulo.
Q345A, Q345B, Q345C, Q345D ndi Q345E ndi magiredi apamwamba. Amawonjezeka kuchokera ku e mpaka e, makamaka chifukwa cha kusiyana kwa kutentha komwe kumayambitsidwa ndi zinthu zosiyanasiyana zazing'ono monga phosphorous ndi sulfure, zomwe zimayimira kusiyana kwa kutentha ndi makina a chitoliro cha mankhwala.
Q345A, palibe zotsatira; Q345B, 20 ° kutentha kwachilengedwe; Q345C, 0 digiri mphamvu; Q345D, ndi - 20 digiri zotsatira; Q345E ndi - 40 digiri mphamvu. Paziwopsezo zosiyanasiyana, zomwe zimakhudzidwa zimasiyananso.
Q mphamvu zokolola sizotsika kuposa 345mp, ndipo kalasi yabwino ikuwonetsa kuti ili ndi zinthu zosadetsedwa (carbon, manganese, silicon, sulfure ndi phosphorous). Ndi kuchuluka kwa zonyansa (zinthu) muzitsulo. Pambuyo pake A, B, C ndi D, m'pamenenso zonyansazo zimachepa
Q345A ili ndi phosphorous ndi sulfure yocheperapo kapena yofanana ndi 0.045%
Q345B ili ndi phosphorous ndi sulfure zocheperapo kapena zofanana ndi 0.040%
Q345C ili ndi phosphorous ndi sulfure yocheperapo kapena yofanana ndi 0.035%
Q345D ili ndi phosphorous ndi sulfure zocheperapo kapena zofanana ndi 0.030%
Q345E ili ndi phosphorous ndi sulfure zocheperapo kapena zofanana ndi 0.025%
Kuchuluka kwa phosphorous ndi sulfure zonyansa muzitsulo, kumapangitsanso kulimba kwamphamvu
Q345A
Q345B Akv osachepera 34 pa 20 ℃
Pa Q345C 0 ℃, Akv siyenera kuchepera 34
Q345D - Akv osachepera 34 pa 20 ℃
Pa Q345E - 40 ℃, Akv si osachepera 27
Chifukwa chomaliza ndi chakuti kuchepa kwa P ndi s zonyansa muzitsulo kumalimbikitsa kusintha kwa mphamvu yamphamvu pa kutentha kochepa. Imodzi ndi mankhwala a Q345 ndipo ina ndi makina a Q345
C≤0.2%,Mn 1.0-1.6%,
Ndi ≤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%
The makina katundu ndi:
Zokolola mphamvu: ≥ 345mpa (kukhuthala pansi 16mm)
Kuthamanga mphamvu: 470-630mpa
kukula: 22%
Mphamvu zamphamvu: ≥ 34j (kutentha kwa mayeso 0 °)
180 ° kuyesa kuyesa:
D = 2A (kukhuthala pansi pa 16mm)
Zokolola mphamvu: ≥ 345mpa (kukhuthala pansi 16mm)
Kuthamanga mphamvu: 470-630mpa
kukula: 22%
Mphamvu zamphamvu: ≥ 34j (kutentha kwa mayeso 0 °)
180 ° kuyesa kuyesa:
D = 2A (kukhuthala pansi pa 16mm)