Starting lever forging is a common mechanical component used to transmit starting torque and control starting operation. Its design principle and optimization mainly include the following aspects:
Strength design principle: Starting rod forgings need to bear large torque and impact load during use, so strength design is the key. Factors such as material strength, fracture toughness and stress concentration should be considered in the design, and the reasonable size, geometry and structure should be determined by means of finite element analysis.
Reliability design principle: Starting rod forgings require high reliability and life in the working process, so reliability design is required. By determining the appropriate safety factor and considering the static strength, fatigue life, corrosion and wear of the starter bar forging, it is ensured that there is no failure during its service life.
Material selection principle: The choice of material has an important impact on the performance and life of the starter bar forging. According to the working conditions, load type and use environment of the starting rod forging, select the appropriate materials, such as high-quality alloy steel, cast steel, etc. At the same time, factors such as the processing performance, heat treatment characteristics and cost of the material should be considered.
Heat treatment optimization: Heat treatment is an important link in the manufacturing process of starting rod forgings, and the organization structure and performance of starting rod forgings can be improved by adjusting heat treatment process parameters and process control. By reasonable selection of heat treatment methods (such as normalizing, quenching, tempering, etc.), the strength and hardness of the starting rod forgings can be improved, the internal stress can be reduced, and the anti-fatigue and anti-corrosion ability can be improved.
Structural optimization: Through structural optimization, the design of starting rod forgings can be improved to ensure the strength and stiffness requirements while reducing the weight. Common optimization methods include the use of lightweight materials, the addition of edge strengthening structures, and the introduction of holes and notches to reduce stress concentration.
To sum up, the design principle and optimization of starting rod forgings need to consider factors such as strength, reliability, material selection, heat treatment and structure. Through reasonable selection of materials, optimization of structure and heat treatment process, the performance and life of starting rod forging can be improved to meet the practical requirements.
