The reasons for unqualified impact performance of medium and thick plates can be attributed to multiple aspects, mainly including raw material problems, production process problems and problems in the quality inspection process. The following is a detailed analysis of these reasons: If the composition of the slab used for rolling medium and thick plates is unreasonable, such as too much sulfur, phosphorus and other impurities in the molten steel, these impurities will affect the purity and organizational structure of the steel plate, thereby reducing its impact performance. Insufficient or excessive content of alloying elements in stainless steel may also cause the impact performance of the steel plate to be substandard. During the smelting and rolling process, if the control is not proper, segregation and banded structure may appear in the steel. These organizational defects will reduce the impact toughness of the steel plate, especially under low temperature conditions.

In the production process, the setting of the heating temperature of the slab heating has an important influence on the performance of the medium and thick plate. If the heating temperature is too low, the steel plate may be uneven in organization and affect its impact toughness; if the heating temperature is too high, the steel plate may be overburned, which also reduces its impact performance. The cooling rate is one of the key factors affecting the internal organizational structure of the medium and thick plate. Too fast cooling speed may cause stress concentration and microstructure defects inside the steel plate, thereby reducing its impact performance. During the rolling process, if the parameters such as rolling temperature, rolling speed, and rolling reduction are not set properly, the structure and performance of the steel plate may be affected. For example, too high rolling temperature may cause the steel plate to overheat and burn, and too fast rolling speed may cause uneven internal structure of the steel plate.

Heat treatment process plays an important role in improving the impact performance of medium and thick plates. If the heat treatment process parameters are not set properly, such as the normalizing temperature, holding time, and unreasonable selection of cooling medium, the impact performance of the steel plate may be unqualified.

Cherry
Website: www.jinyoumetal.com
Email: Cherry@jinyoumetal.com
WhatsApp/WeChat: +86 13373795593

#mediumthickplates