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Introduction
The application of liquid-state forging process has become increasingly popular in industrial production due to its various advantages, including improved product quality, simplified process, reduced cost, increased production efficiency and safety, and improved environmental protection.However, the forging defects of liquid-state forging parts can cause serious safety and quality problems, such as bubbles, cracks, shrinkage and deformity, which may lead to product failure, scrap and even accidents, thus reducing the overall efficiency of the production process and resulting in economic losses.Therefore, it is necessary to study the defect mechanism of liquid-state forging parts and measures to prevent and control defects in order to ensure the quality of parts and the normal and safe operation of the production process.
Cause and mechanism of defects in liquid-state forging parts
The common defects of liquid-state forging parts include bubbles, cracks, shrinkage and deformation, etc.Most of these defects are caused by the following reasons:
1. Improper control of metal temperature and flow rate. If the metal temperature is not properly controlled or the metal flow rate is too large or too small, it will easily lead to shrinkage, bubbles and cracking of the parts.
2. Improper material selection. Improper material selection has a great influence on the forging defects. Inappropriate material selection will cause the parts to be insufficiently filled, leading to surface defects and even cracking of the parts.
3. Unreasonable mold design. Improper or inadequate die design or forging process can lead to excessive accumulation of forging stress and forge die blocking, forming internal cracks, bubbles and physical defects.
4. Improper choice of forging process. Forging processes such as forging, pressing and extrusion can produce complex shaped parts with high precision and good mechanical properties.However, if the process is not properly selected, the metal may flow unevenly, leading to unequal shrinkage and surface defects.
Measures to prevent and control defects in liquid-state forging parts
To prevent and control defects in liquid-state forging parts, the following measures can be taken:
1. Improve the accuracy of metal temperature control during the liquid-state forging process. This can ensure that liquid metal temperature is uniformly and accurately controlled to promote optimal part performance.
2. Improve material selection. It is important to select the appropriate materials with good forging performance to reduce defective products.
3. Improve the die design. Forging die design should be improved to reduce the unevenness of material injection, and to ensure that the metal is evenly filled and the surface of the parts is free of defects.
4. Improve process selection. Improve the selection of forging process, fully consider the product shape and technical parameters, so as to choose the appropriate process, ensure the filling of the forging material, reduce surface defects and internal cracks.
Conclusion
Liquid-state forging process is widely used in industrial production due to its many advantages. However, the forging defects of liquid-state forging parts easily lead to product failure, scrap and even accidents, resulting in economic losses.In order to ensure product quality and safe operation of the production process, it is necessary to study the defect mechanism of liquid-state forging parts and measures to prevent and control defects. The above measures to prevent and control defects can be adopted in the actual production process, which can effectively reduce the occurrence of defects in liquid-state forging parts and improve production efficiency and product quality.
