Fatigue life and reliability of starting bar forging are important indexes to evaluate the durability of the forging. Fatigue life refers to the life time that the starting rod forging can work normally after bearing cyclic load under specific working conditions. Reliability refers to the ability of the starter bar forgings to work continuously and steadily throughout their service life, that is, without failure or damage.
The fatigue life and reliability of starting bar forging are affected by many factors, including physical and mechanical properties of materials, design parameters, manufacturing process, working conditions and so on. The following are some important factors that affect the fatigue life and reliability of starting rod forgings:
- Material selection: Select materials with high strength, high toughness and good fatigue resistance suitable for starting rod forgings, such as alloy steel, high-quality carbon steel, etc.
- Design parameters: The design of the starting rod forging should take into account its stress and load distribution, and the geometric shape, size, chamfer and other parameters should be reasonably determined during the design process to improve its fatigue life and reliability.
- Manufacturing process: Manufacturing process has an important impact on the quality and performance of starting rod forgings. Appropriate forging, heat treatment and processing technology are adopted to ensure the uniform structure, less internal defects and high surface finish of the starting rod forging.
- Working conditions: The working environment factors such as the load size, frequency, temperature and humidity of the starting rod forging during use will also directly affect its fatigue life and reliability. Therefore, it is necessary to reasonably control the working conditions in use to avoid adverse factors such as overload and overload.
In order to evaluate the fatigue life and reliability of starting bar forging, fatigue test, finite element analysis and reliability prediction can be used. Through these methods, the service life of the starter bar forging under actual working conditions can be determined, and optimization suggestions are put forward to improve its durability and reliability.
