Manufacturing process and quality control of automobile spring

The manufacturing process and quality control of automobile springs play an important role in the modern automobile manufacturing industry. Automotive springs are usually used in key parts such as suspension system, shock absorption system and brake system, so their manufacturing quality and performance stability have an important impact on the safety and operational stability of vehicles. Automotive spring manufacturers will introduce the manufacturing process and quality control of automotive spring.

First, the manufacturing process of automobile spring

The manufacturing process of automobile spring includes several key steps such as steel wire selection, steel wire drawing, steel wire processing, spring winding, spring processing, heat treatment and surface treatment. The following will take the common wheel spring manufacturing as an example to introduce its specific manufacturing process.

1. Steel wire selection and drawing

Steel wire is a high-quality steel that can be drawn to obtain the required strength and hardness. Automobile wheel spring usually uses bright round wire as raw material, bright round wire is usually more uniform and good material, with a high degree of plasticity. Different types of springs can be produced by using bright round wires of different diameters and different materials.

2. Wire processing and winding

After wire drawing, the wire needs to be further wire machining and winding. Machine winding is usually used for winding, and machine winding has the characteristics of high efficiency and high precision. By adjusting the parameters of the machine, springs of different diameters, widths and turns can be produced.

3. Spring processing

After the winding is completed, the spring needs to be processed, including a series of processing steps such as edge correction, total height correction, straightening, cycloidal correction, etc., to ensure the dimensional accuracy and strength performance of the spring.

Step 4 Heat treatment

Heat treatment is an important step in spring manufacturing, through heat treatment can improve the mechanical properties and durability of steel. Common heat treatment processes are annealing and quenching, annealing can adjust the hardness and strength of the spring, quenching can improve the tensile strength and durability of the spring.

5. Surface treatment

The surface treatment is to improve the corrosion resistance and appearance quality of the spring. Common surface treatment methods include electroplating, spray painting, thermal spraying, etc. These methods can make the spring have better weather resistance and rust resistance.

Second, the quality control of automobile springs

The manufacturing quality and performance stability of automobile spring have important influence on the safety and running stability of automobile. Therefore, the quality control of automobile spring needs to take a number of measures to ensure product quality.

1. Quality control of raw materials

The first task of spring manufacturing is to select high quality steel wire. The quality of steel wire directly affects the performance of spring. Therefore, the source, diameter, material and other parameters of the steel wire need to be strictly controlled.

2. Control of manufacturing process

The control of each link in the spring manufacturing process is very important. In the steel wire drawing, spring winding, spring processing and other links need to carry out strict quality control to ensure that the performance indicators of each spring product meet the requirements.

3. Control of detection and testing

In the back, the detection and testing of the spring is also critical. A variety of testing methods and testing equipment are usually used for quality testing, such as metallographic analysis, tensile testing, hardness testing, fatigue testing, etc. Only through a variety of methods of detection and inspection can ensure the quality of the spring.

In short, the manufacturing process and quality control of automotive spring is a multi-directional, multi-link measure, which requires comprehensive control and supervision of raw materials, manufacturing processes, testing and other multi-directional. Only in this way can we ensure the quality and performance stability of automotive springs, and make important contributions to the safe and stable development of the automotive industry.