Conventional automobile body structures usually consist of hundreds of parts of different shapes and materials, which need to go through multiple processes such as stamping, welding, and fastening to complete the assembly. This way is not only time-consuming, but also increases the weight and cost, and limits the flexibility and innovation of the design. Giga casting technology can integrate originally dispersed parts into one integral part, thus simplifying the body structure and production process.

Due to giga casting technology, the weight of the mold base increases. The safety performance assessment of the mold base is an important part to ensure the safety and reliability of the mold in the process of use. The assessment includes the structural safety of the mold, the safety of the material, the safety of the heat treatment process. Through the assessment, potential safety hazards can be found in time and corresponding measures can be taken to improve.

P20 forged steel with high strength, high heat resistance and high wear resistance is usually used in the material selection of the mold base. P20 has good mechanical properties and can meet the requirements of the mold base in the high-pressure casting process. At the same time, the excellent processing performance and heat treatment performance can ensure the processing quality and service life of the mold base.

The accuracy of the mold base directly affects the quality and precision of the die casting. Therefore, during the manufacturing process of the mold base, the dimensional accuracy and tolerance of each component need to be strictly controlled. At the same time, the assembly process of the mold base also needs to be carried out in accordance with strict technological requirements to ensure the matching precision and stability between the components. In order to solve the problem of deep cavity processing quality and efficiency, through the purchase of special processing tools and imported equipment, to solve the problem of tool swing during deep cavity processing, to meet the requirements of product parameters.

The flatness accuracy of the mold refers to the flatness error between the working surface and the reference surface of the mold, and the commonly used indexes are flatness, parallelism and perpendicularity, etc. In the process of mold manufacturing and use, the mold flatness accuracy is required to ensure the dimensional stability of the product and production efficiency. Improvement of mold flatness accuracy requirement is directly related to product quality and production efficiency. In order to meet the requirements of mold base flatness, most of the deformation is removed before finishing, stress relieving, and machining the front and back surfaces several times to meet the flatness requirements.

Quality inspection and control is an important means to ensure the quality of the mold base. In the manufacturing process of the mold base, it is necessary to carry out strict quality inspection of each component to ensure that the dimensional accuracy, surface quality, material properties and so on meet the design requirements. At the same time, it is also necessary to monitor the use of the mold, discover and deal with quality problems in time, and ensure the stability and reliability of the mold.

We will carry out the final cleaning and trial assembly of the mold base after processing and testing is completed, check the assembly of all parts and the main plate, and confirm the fit gap between each part in advance to ensure the mold core can complete test after loading to the mold base.