- : 0086-21-61182423
- : 0086-21-61182425
- : [email protected]
- : Room 301,Unit 6,lane 2500,xiupu Road,Kangqiao Industrial Area,Pudong New District,Shanghai
- Improper welding of X80 pipeline may cause cracks
- Brief introduction of API X52 pipeline steel
- The difference between PSL1 and PSL2
- Harm of inclusions in X70 pipeline steel
- API 5L pipeline pipe
- X52 steel plate surface quality standards that need to be met
- The basic production process of API 5L X60 pipeline steel
- The key to Q460D steel welding process
- What does the heat treatment of Q690 Steel include?
- Reasons for choosing Q690D steel
Advantages of lowering hot rolling temperature on S700MC steel
Due to the sensitivity of S700MC steel to high temperature, what is the advantage of lowering the rolling temperature for S700MC steel during hot rolling?
(1)Reducing the hot rolling temperature can significantly increase the elongation and area reduction of S700MC steel, and reduce the yield strength, while the tensile strength of S700MC steel is only slightly reduced.
(2)The metallographic microstructure shows that reducing the rolling temperature can reduce the reticular ferrite and massive ferrite, and is beneficial to the homogenization of the ferrite and pearlite structures of S700MC steel.
(3)The fracture morphology shows that reducing the rolling temperature can increase the tear ribs and dimples, thereby homogenizing the fracture zone and improving the toughness of S700MC steel.
(4) The displacement of ferrite growing into the crystal is related to the austenite transformation temperature and transformation time. Lowering the rolling temperature can refine the ferrite structure of S700MC steel.