When making the automobile control arm, we need to pay attention to the following important aspects:

1. Material selection: Automobile control arm is usually made of aluminum alloy, steel or carbon fiber. When selecting materials, it is necessary to consider the strength, hardness, wear resistance and corrosion resistance of materials to ensure that the control arm has sufficient strength and durability.

2. Manufacturing process: The precise manufacturing process is needed to manufacture the automobile control arm, including cold forging, hot forging, casting, welding and other processes. In the manufacturing process, it is necessary to ensure accurate size and smooth surface, and avoid defects such as cracks and air holes, so as to ensure the quality and performance of the control arm.

3. Structural design: The structural design of the control arm needs to consider the stress and working environment to ensure that the control arm can bear all kinds of forces and vibrations during the driving of the vehicle. Reasonable structural design can improve the strength and stability of the control arm and prolong its service life.

4. Surface treatment: The surface of the control arm usually needs anti-corrosion treatment, such as spraying antirust paint and electroplating, to improve the corrosion resistance of the control arm. In addition, the surface can be sprayed or anodized to improve the appearance and wear resistance of the control arm.

5. Quality control: In the production process, the quality of each link should be strictly controlled, including the inspection of raw materials, the control of processing technology and the detection of finished products. Quality control can ensure that the quality of the control arm is stable and meets the design requirements, and improve the reliability and safety of the product.

To sum up, attention should be paid to the material selection, manufacturing process, structural design, surface treatment and quality control when making the automobile control arm, so as to ensure that the control arm has good strength, durability and stability and improve the driving safety and comfort of the vehicle.