What is the influence of forging materials on its performance? Please provide an actual production case to illustrate it.
The material of forging has a decisive influence on its performance. Different types of forging materials have significant differences in mechanical properties, corrosion resistance, fatigue strength, and so on. Below, we will take an actual production case as an example to explain the impact of forging materials on its performance.
Taking the automotive crankshaft as an example, the most widely used materials currently on the market are 45# steel and 40Cr steel. The main difference between these two materials is the chromium content. 40Cr steel contains a higher proportion of chromium elements, so it has better corrosion resistance. At the same time, under the same conditions, the strength and hardness of 40Cr steel are higher than those of 45# steel. It is more suitable for forging applications with high strength and wear resistance. However, relatively speaking, the weldability of 40Cr steel is poor and cannot meet the needs of welded parts manufacturing after processing.
Taking the forging material commonly used in the construction industry–20CrMnTi steel as an example. This steel is mainly used to manufacture concrete reinforcement connectors and is also suitable for various mechanical parts with high strength and wear resistance. The high carbon and hardening elements of 20CrMnTi steel make it have high hardness and wear resistance, and its smoothness and dimensional accuracy after forging and processing are also very high.
In addition to the above-mentioned materials, forgings usually also use other materials such as titanium, molybdenum alloys, and stainless steel. These materials respectively have better corrosion resistance, high-temperature strength, and tensile properties under specific conditions.
In summary, when selecting materials, manufacturers need to consider the function and application scenario of the components, choose suitable forging materials, and manufacture high-performance forgings under the corresponding material conditions.
