The complete production process of a casting product includes product design, process design, casting blank production, heat treatment and machining. If there is a problem in any stage, it may lead to the quality problem of the final steel casting, which requires quality control in the process.
Process control is mainly to improve the relevant technical and production management documents such as casting process operation instructions and on-site operation instructions, and ensure the strict implementation of these documents. Only in this way can we ensure the standardized production of steel castings in accordance with the standards and relevant documents and avoid the quality problems of products caused by artificial improper operation. Process connection and current situation analysis of common cast steel defects.
Shrinkage cavity and porosity defects of steel castings are related to process design (including steel castings and pattern design, pouring and riser system design), model (sample) production, modeling (including sand mixing, coating, lower core, etc.), core making, smelting (including smelting operation and metal composition control), pouring and other processes.
In the actual production process of steel castings, shrinkage cavity and porosity defects should be avoided, which is mainly controlled from the key processes such as modeling, core making, melting and pouring.