What is the material of 07mnnimodr, 07mnnimodr steel plate fixed rolling, 07mnnimodr oil storage tan

What is the material of 07mnnimodr, 07mnnimodr steel plate fixed rolling, 07mnnimodr oil storage tan

What is the material of 07mnnimodr, 07mnnimodr material steel plate is rolled and rolled, 07mnnimodr oil storage tank container plate
07MnNiMoDR is a steel plate for cryogenic pressure vessels, the steel plate is delivered in a quenched and tempered state, the yield strength is greater than 490Mpa, the tensile strength is between 610-730Mpa, and the impact temperature is -50 degrees. 07MnNiMoDR is mainly used in large oil storage tanks, large spherical tanks and oil production platforms.

The implementation standard of 07MnNiMoDR is: GB19189-2011

07mnnimodr material steel plate fixed rolling: Wugang Xiangyang

07MnNiMoDR heat treatment: the steel plate should be in the state of quenching + tempering modulation heat treatment, tempering temperature is not less than 600 °C. The steel plate should be delivered as shear or flame cutting.

The reheat crack sensitivity of quenched and tempered high-strength steel 07MnNiVDR was studied by using the slow tensile test after thermal simulation, the Charpy pendulum impact test, the bolt test and the small iron research test. Thermal simulation studies show that the steel is not sensitive to reheat cracking when welding with small heat input. In the case of large heat input, the sensitive temperature is around 600C.

The bolt test shows that the steel has a certain sensitivity to reheat cracks, and the sensitive temperature is about 600°C. The results of the thermal simulation test and the bolt test are consistent, and the small iron research test is not suitable for the reheat crack susceptibility study of the test materials. Slow tensile after thermal simulation is an effective method to judge the sensitivity of materials to reheat cracks, and the initial stress at critical fracture of the latch has guiding significance for production. Although no obvious reheat crack was found in the test of Xiaotieyan, the post-weld heat treatment of the steel should also be carefully
tested The material used for
the test is selected from the domestic 07MnNiVDR steel plate, and its chemical composition and mechanical properties are shown in Table 1 and Table 2, which meet the requirements of the national standard GB19189-2011 "Quenched and tempered high-strength steel plate for pressure vessels".