WQ960E high-strength quenched and tempered steel plate
1. WQ960E high-strength quenched and tempered steel plate: Attributes: Wugang; Type: Quenched and tempered;
Second, the implementation of the standard: WYJ (the implementation of Wugang's enterprise standard, the enterprise standard is greater than the national standard);
3. Delivery status: Quenched and tempered state delivery (quenching and tempering);
| Chemical composition |
| Watch: Depu Steel Date: 2024-01-16 |
| C |
Si |
Mn |
P |
S |
Cu |
Cr |
Ni |
Mo |
| ≤0.2 |
≤0.8 |
≤2 |
≤0.025 |
≤0.015 |
≤0.5 |
≤1.5 |
≤2 |
≤0.7 |
Note:
(1): In order to improve the properties of steel, other trace alloying elements other than the above table can be added, and the data comes from the network and is for reference only.
(2): The allowable deviation of the chemical composition of the finished steel plate should comply with the provisions of
GB/T222 According to the reason, WQ960E belongs to the steel plate for construction machinery, the yield strength of the steel plate is required to reach ≥960Mpa, the tensile strength is required to reach ≥1000Mpa, and the longitudinal impact requirements of -40 can reach ≥34J, which is the special steel grade with the highest strength level and impact toughness requirements in the plate market so far. The special high-strength plate is mainly used in high-strength load-bearing parts such as mine truck floor, excavator digging arm, coal mine hydraulic support, etc., and the performance directly determines the service life of mechanical equipment. Moreover, this kind of steel produced by Wuyang Steel Plant has advanced technology, stable comprehensive performance and strong flaw detection ability!
Because of this, the difficulty in the production of this steel grade lies in the control of hardenability and plate shape, the hardenability of the steel plate directly affects whether the strength of the steel plate can reach the standard, and the plate shape is good or otherwise determines whether the plate can be produced in large quantities. Because the alloy content of WQ960E is high, it is necessary to ensure that the alloy is fully solution to ensure that the performance uniformity of the whole plate is good after quenching, so the heating temperature and holding time need enough time, and it must be guaranteed that it has sufficient heating. At the same time, the yield level of this steel grade is high, and once it is bent, the straightening force of the existing straightening machine can basically not complete the straightening of the steel plate. To this end, the plate research office of the Iron and Steel Research Institute formulates a detailed process plan, and refines the key points of process operation according to the plan to ensure that the performance uniformity of the whole plate after quenching is good. After testing, the yield strength and tensile strength have reached more than 1000Mpa, and the longitudinal impact value of -40 has reached more than 100J, with good performance and the expected effect, which has laid the foundation for subsequent mass production
