In the production process of main and auxiliary connecting rod forging, due to the influence of various factors, there may be various defects, such as cracks, folding, and unequal organization. These defects not only affect the quality of the forging, but also reduce its service life and reliability. Therefore, the prevention and control of defects is an important task in the production process of main and auxiliary link forging. This paper will discuss the common defects in the forging process of main and auxiliary connecting rod and its prevention and control measures.
Common defect
Crack: Crack is one of the most common defects in the forging process of main and auxiliary connecting rod. It is usually caused by excessive stress or strain on the metal during forging, resulting in small cracks in local areas. The presence of cracks will reduce the strength and durability of forgings.
Folding: Folding is caused by uneven flow or impact of the metal during forging. Folding may lead to uneven forging surface, severe may cause stress concentration, reduce the bearing capacity of the forging.
Uneven organization: In the production process of the main and auxiliary connecting rod forging, if the temperature is not properly controlled or the deformation is not sufficient, it may lead to uneven internal organization of the metal. This affects the mechanical properties and corrosion resistance of the forgings.
Surface defects: Surface defects include oxidation, decarbonization, scratches, etc. These defects may be caused by environmental factors in the production process or improper operation. Surface defects can affect the beauty and corrosion resistance of forgings.
Prevention and control measures
Optimization of process parameters: By accurately controlling process parameters such as temperature, deformation degree and speed, stress and strain, defects such as cracks and folding can be prevented. The optimization of process parameters can ensure that the plastic deformation and structure of the metal meet the requirements, and improve the quality and reliability of the forging.
Strengthen temperature control: temperature is one of the key process parameters in the forging process of main and auxiliary connecting rod. By precisely controlling the temperature during the heating and cooling process, the metal can be avoided from overheating or undercooling, preventing the formation of uneven microstructure and cracks. At the same time, a reasonable temperature gradient can promote the uniform flow of the metal and reduce the occurrence of defects such as folding.
Improve operating skills: The skill level of the operator is also one of the key factors affecting the quality of the forging. Through strengthening training and practical operation, improve the skill level of operators and reduce the defects caused by improper operation.
Strengthen quality inspection: Quality inspection is an important means to prevent and control defects. Through real-time detection and sampling in the production process, defects are discovered and recorded in time, and corresponding measures are taken for correction and prevention. At the same time, statistical analysis of the detection data is carried out to find out the causes of defects, and further optimize the process parameters and control measures.
Introduction of automation technology: automation technology can improve the stability and reliability of the production process and reduce the impact of human factors on product quality. Through the introduction of robots and automatic inspection equipment, the automatic production and quality inspection of main and auxiliary connecting rod forgings are realized, and the production efficiency and product quality are improved.
Strict control of raw materials: the quality of raw materials has an important impact on the quality of forgings. Through quality inspection and control of raw materials, ensure that the quality of raw materials meets the requirements. At the same time, reasonable material collocation and alloying element control can also improve the mechanical properties and corrosion resistance of forgings.
To sum up, the prevention and control of defects in the production process of main and auxiliary connecting rod forging need to start from many aspects, including optimization of process parameters, strengthening temperature control, improving operation skills, strengthening quality inspection, introducing automation technology and strict control of raw materials. Through the comprehensive use of these measures, the quality and reliability of the main and auxiliary connecting rod forging can be effectively improved, the production cost can be reduced, and the market competitiveness of enterprises can be improved.
