Technical Requirements of Overall Assembly Accuracy of Low-pressure Casting Die
1 Introduction
Low-pressure casting die is a kind of casting die which is a kind of pressure casting process in the casting process. Casting die is an important tool for the production of precision castings, and its quality directly affects the quality of the casting products. The assembly accuracy of the low-pressure casting die directly determines the correctness and stability of the mold structure and its working performance. This article mainly introduces the technical requirements of the overall assembly accuracy of the low-pressure casting die.
2 Technical Requirements
2.1 Casting Dimension
The casting part of the lower pressure casting die should keep the normal value of the parameter size, the size should be formed by the normal die, and there is no shrinkage, bending and other defects. The gap of the mold should not be too large or too small, the material should be all around it, and the gap should be uniform.
2.2 Assembly Accuracy
When assembling the low-pressure casting die, the dimension accuracy of the mold should be maintained, especially in the size direction and the stamping direction, which is an important guarantee for the accuracy of the casting parts. The mating surface should be smooth and clean, and no burr or scratches should be generated. The gap of the assembly should be uniform, and the gap and contact part should be checked first.
2.3 Heat Treatment
When assembling the low-pressure casting die, the surface of the workpiece often needs to be heat treated to strengthen the surface of the workpiece to improve the service life of the mold. After heat treatment, the hardness of the surface of the die should meet the requirements, and no oxidation or other phenomena should be generated on the surface.
2.4 Installation Requirements
The installation of the low-pressure casting die should be firmly and reasonably, paying attention to the overall balance. The nailing or welding place should be buried and sealed, the welding temperature of general welding should be controlled at 350-400 degrees, and the connecting part should meet the corresponding strength requirements.
3 Conclusion
The assembly accuracy and installation of the low-pressure casting die are very important for the quality of the casting products, and the requirements for the overall assembly accuracy of the die should be strictly followed. When assembling the low-pressure casting die, attention should be paid to the uniformity of the gap and the contact part, and the heat treatment process should be strictly controlled, so as to ensure the quality of the casting die.
