The flaw detection function of forging of automobile parts
Apr 30, 2023| 1. Introduction
Automobile industry is one of the world's largest, most promising and most vigorous industries. Automobile safety and quality is a very important link in the process of automobile production, and auto parts forging is an important part of the production process of auto parts, for the production of high quality, safe and reliable auto parts, flaw detection technology plays a vital role. This paper will focus on the role of flaw detection in forging auto parts.
2. Introduction to flaw detection of auto parts forging
Auto parts forging refers to the process that aluminum alloy, steel, copper, nickel and other metal materials are hammered or pressed to form components or parts in the desired shape. It is suitable for many parts of various shapes, such as crankshaft, camshaft, gear and clutch assembly of automobile engines. Auto parts forging has the characteristics of high strength, high toughness, high wear resistance and high precision, so it is one of the key steps to produce high-quality automobiles. However, due to the uncertainty of raw materials in the forging process, as well as the operator's experience, technical level and other factors, this process has some quality problems. Therefore, using flaw detection technology to monitor and detect the forging process is an effective means to guarantee the forging quality of automobile parts.
Flaw detection is a non-destructive detection technique that evaluates the quality and integrity of a material by accessing its internal structure. The flaw detection technology mainly includes ultrasonic flaw detection, ray flaw detection, eddy current flaw detection and other methods. Ultrasonic inspection is one of the most commonly used inspection methods, which can be used to detect the types and states of different materials. X-ray testing can detect defects, cracks and voids in materials, while eddy current testing is more suitable for surface defects. These flaw detection techniques can be used in the quality control of auto parts forging and the screening of defective products to ensure the quality of the parts produced.
3. Ultrasonic inspection
Ultrasonic detection is one of the most common detection techniques in the laboratory. The principle is to generate pulses on the surface of the detected material through ultrasonic emission probes, and then identify defects or other structural changes in the material through the reflection of sound waves inside the material. Ultrasonic flaw detection technology is widely used in the forging of automobile parts. For example, the crankshaft of automobile engine is a very complex part, which has a number of different voids. If one or more voids are insufficient or excessive, it may lead to the engine sliding bushing that cannot bear the relevant pressure. Therefore, ultrasonic flaw detection technology can be used in the production process of engine crankshaft to determine which parts have the correct shape and depth to ensure that the quality of the parts is up to standard.
4. X-ray detection
X-ray testing is a popular flaw detection technique that detects defects and other possible problems by injecting X-rays, gamma rays, or neutrons into the part being tested. In addition, X-ray detection can also determine the hardness and thickness of the material and identify any cracks or holes along the surface or inside of the vehicle parts during forging. This method is more powerful in terms of security and can help judge the quality and integrity of the material. In the production process of steel, aluminum alloy and other metal parts, X-ray flaw detection technology can be efficiently detected to ensure that the parts in the forging process meet the required quality standards.
5. Eddy current inspection
Eddy current detection is a technology that uses eddy current principle to detect metal surface defects. It is suitable for detecting metal parts surface cracks and cracks. In addition, cracks and other defects can be detected more easily if used for smaller parts, such as during the production of parts such as cylinder liners in engines or hub rings for cars. Eddy current inspection can detect very small defects, especially in the case that the location of the central defect is difficult to judge, which is very important.
6. Automatic flaw detection technology
For automobile manufacturers, mass production is an important goal, so the production line covering a large number of parts types must be developed and effectively monitored to ensure the quality of parts is consistent, and the automatic detection technology provides real-time automatic detection function to ensure the quality of the parts produced is consistent. Automated flaw detection technology is one of the more advanced and mature detection technologies. It completely integrates the process of flaw detection and data acquisition, and automatically executes some decisions and/or controls to realize abnormal detection, classification, discrimination and other tasks. In the process of auto parts production, automatic detection technologies such as JMA (pattern recognition and machine learning) technology and neural network algorithm are widely used to improve the accuracy and efficiency of auto parts production.
Step 7: Conclusion
Auto parts forging is one of the important processes of automobile manufacturing, which is closely related to the safety and quality of automobile. The application of flaw detection technology in the forging process of automotive parts can help to monitor and detect quality problems, while also helping to achieve the highest efficiency and quality standards in the production process. Therefore, the flaw detection technology of auto parts forging should be emphasized and developed. In the future development, automatic flaw detection technology will become the mainstream detection method, and make the production level of auto parts be further improved.