The traditional car body structure is usually composed of hundreds of parts with different shapes and materials, which require multiple processes such as stamping, welding, and fastening to complete assembly. This approach is not only time-consuming and labor-intensive, but also increases weight and cost, and limits the flexibility and innovation of the design. Integrated die-casting technology can integrate dispersed parts into a single unit, simplifying the body structure and production process

Due to the use of integrated die-casting technology, the weight of the mold frame increases accordingly. The safety performance evaluation of the mold frame is an important link to ensure the safety and reliability of the mold during use. The evaluation content includes the structural safety of the mold, the safety of the materials, and the safety of the heat treatment process. Through evaluation, potential safety hazards can be identified in a timely manner and corresponding measures can be taken for improvement.

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

The accuracy of the mold frame directly affects the quality and precision of the die casting. Therefore, in the manufacturing process of the mold base, it is necessary to strictly control the dimensional accuracy and positional tolerances of each component. At the same time, the assembly process of the mold frame also needs to follow strict process requirements to ensure the accuracy and stability of the fit between the components. In order to solve the problems of quality and efficiency in deep cavity machining, special machining tools and imported equipment are purchased to solve the problems of tool swing, small downward cutting amount, and difficulty in ensuring dimensional accuracy during deep cavity machining, and to meet the requirements of product parameters.

Mold flatness accuracy refers to the flatness error between the working surface and the reference surface of the mold, and commonly used indicators are flatness, parallelism, and verticality. In the process of mold manufacturing and use, high precision of the mold plane is required to ensure the dimensional stability and production efficiency of the product. The improvement of mold flatness accuracy requirements is directly related to product quality and production efficiency. To meet the flatness requirements of the mold base, processes such as removing most of the deformation before precision machining, stress relief, and multiple processing of the front and back sides are adopted to meet the flatness requirements.

Quality inspection and control are important means to ensure the quality of mold frames. During the manufacturing process of the mold frame, strict quality inspection is required for each component to ensure that dimensional accuracy, surface quality, material properties, etc. meet the design requirements. At the same time, it is necessary to monitor the use process of the mold, promptly identify and handle quality issues, and ensure the stability and reliability of the mold.

After the mold frame is processed and inspected, we will perform the final cleaning and trial assembly, check the special matching relationship between all spare parts and the motherboard, and prepare the fitting gaps between each part in advance to ensure that the mold core is smoothly installed on the mold frame and the trial mold is completed.