Stainless steel forge piece for pressurized water reactor and manufacturing method of stainless steel forge piece
Through specific components and process processing, the problem of poor forging performance of stainless steel forgings for pressurized water reactors is solved, and the effect of high grain size and excellent mechanical properties is achieved.
CN119710464APending Publication Date: 2025-03-28WUXI FLANGE FORGING CO LTD
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Patent Information
- Application Number
- CN202411910610.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-24
- Publication Date
- 2025-03-28
AI Technical Summary
Technical Problem
In the prior art, the forging performance of stainless steel forgings for pressurized water reactors is poor, and multiple forging fires are required, which is prone to coarse crystallization, resulting in a decrease in mechanical properties.
Method used
Stainless steel forgings are made using specific ingredients, and through segmented heating and reasonable forging deformation, combined with solid solution heat treatment and the use of additives with molybdenum carbide-hafnium carbide composite structure, the grains are refined and mechanical properties are improved.
Benefits of technology
It realizes the high grain size and excellent mechanical properties of stainless steel forgings, reduces the forging times and avoids the occurrence of coarse crystal phenomenon.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention provides a stainless steel forge piece for a pressurized water reactor, which consists of the following components in percentage by weight: 0.01 to 0.03 percent of C, 0.95 to 1.00 percent of Si, 1.80 to 2.00 percent of Mn, less than or equal to 0.015 percent of S, less than or equal to 0.03 percent of P, 17.00 to 20.00 percent of Cr, 0.96 to 1.00 percent of Cu, 9.00 to 12.00 percent of Ni, less than or equal to 0.1 percent of Co, less than or equal to 0.0018 percent of B and the balance of iron. The invention further provides a manufacturing method of the stainless steel forge piece for the pressurized water reactor. The stainless steel forge piece for the pressurized water reactor, provided by the invention, has relatively high grain size and relatively good mechanical properties.
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