Automotive CAM is an important part of automotive engine, its processing technology and material selection have a vital impact on the performance and life of the engine. This paper will introduce the machining technology and material selection of automotive CAM.
First, the processing technology of vehicle CAM
The processing technology of vehicle CAM mainly includes the following steps:
Material selection: Commonly used materials include high strength cast steel, forged steel, tungsten carbide alloy, etc. The selection of materials should take into account factors such as wear resistance, strength, stability and weldability.
Design CAM shape: According to the engine design parameters and use conditions to determine the shape of the CAM size and curve.
CAM blank processing: through forging, casting and other ways to manufacture CAM blank, to ensure that the quality of the blank is up to standard.
Heat treatment: The use of quenching, tempering, normalizing and other methods for heat treatment, improve the hardness and strength of the CAM.
Finishing: The blank is placed into the CNC machine for precision machining to obtain accurate CAM shape and size.
Surface treatment: The use of sandblasting, surface grinding and other ways to make the CAM surface smooth, reduce wear.
Second, the material selection of car CAM
High strength cast steel: This material has high strength, high hardness and good wear resistance, and is suitable for high load and high speed engines.
Forged steel: Forged steel has good plasticity and toughness, suitable for high speed engines, and welding performance.
Tungsten carbide alloy: Tungsten carbide alloy high hardness, good wear resistance, is an ideal CAM material. However, the processing of tungsten carbide alloy is difficult and the cost is relatively high.
Other materials: In addition to the above common materials, there are some special materials such as metal ceramic composite materials, nanomaterials, etc., can also be used as CAM materials. However, these materials are more difficult to process and require a higher level of technology and equipment.
To sum up, the machining technology and material selection of automotive CAM have an important impact on the performance and life of the engine. When choosing automotive CAM material, it is necessary to consider the strength, hardness, wear resistance and weldability of the material. When machining the CAM, it is necessary to process in strict accordance with the process flow, and adopt appropriate surface treatment methods to improve the wear resistance of the CAM.
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