12Cr2Mo1R steel plate is an alloy steel plate used for boilers and pressure vessels, characterized by high strength, high toughness, impact resistance, and ease of processing. Its rolling process is as follows:

1. Steelmaking: First, the 12Cr2Mo1R steel plate undergoes steelmaking, where molten iron is refined to form qualified molten steel. During the steelmaking process, the content of elements such as carbon, silicon, manganese, phosphorus, and sulfur must be strictly controlled to meet the performance requirements of the steel plate.

2. Casting: The refined molten steel is cast into steel billets, with the size and shape of the billets controlled according to rolling requirements.

3. Rolling: The steel billets are rolled to gradually form the desired 12Cr2Mo1R steel plate. During the rolling process, rolling speed, rolling pressure, and rolling temperature must be strictly controlled to ensure the thickness, flatness, and surface finish of the steel plate.

4. Heat Treatment: After rolling, the steel plate undergoes heat treatment to improve its mechanical properties and stability. The heat treatment process includes annealing, normalizing, tempering, etc., with specific processes adjusted according to the specifications and performance requirements of the steel plate.

5. Leveling: After heat treatment, the steel plate is leveled to ensure its flatness and evenness.

6. Cutting: According to order requirements, the steel plate is cut using methods such as gas cutting, plasma cutting, or laser cutting. The cut surface should be smooth, free of burrs and slag.

7. Surface Inspection: The cut steel plate undergoes surface inspection to ensure it is free of defects such as cracks, burrs, and scratches.

8. Non-Destructive Testing: Ultrasonic testing is performed on the steel plate to detect internal defects such as slag inclusions and cracks.

9. Performance Testing: The steel plate undergoes mechanical performance and chemical composition tests to ensure it meets standard requirements.

10. Warehousing: Qualified steel plates are packaged and stored in designated warehouses to ensure stable quality.

In summary, the rolling process of 12Cr2Mo1R steel plate involves multiple steps, including steelmaking, casting, rolling, heat treatment, leveling, cutting, surface inspection, non-destructive testing, performance testing, and warehousing. In actual production, parameters and processes at each step must be strictly controlled to ensure the performance and quality of the steel plate.