Bonding certification DIN2304 quality standard helps the bus industry achieve "zero-defect" bonding!

Modern industrial adhesives, as a high-tech bonding artifact, can achieve "zero-defect" bonding effects if used properly. However, in the field of bus manufacturing, we still face the common problem of bonded joint failure. Behind this, it is often caused by improper use of adhesives. The DIN2304 standard was born to solve this problem. It emphasizes strict supervision of the bonding-related processes while ensuring organized bonding quality assurance.

Many quality problems in bus manufacturing are closely related to bonding. The bonding process runs through every work station of the car body and assembly workshop, such as the bonding of body skin, sealing, glass, floor and other links. However, after-sales statistics show that bonding problems are mainly divided into three categories: poor bonding, sealing failure and aging. The reasons behind these problems are complex and involve many aspects such as design, process, manufacturing and bonding products.

For example, the failure of the adhesive seal of the side window may lead to the penetration of rust and water, and even the loosening of the glass; the aging of the sealing strip of the sunroof may cause water leakage; the bubbling on the surface of the window sealant not only affects the appearance, but may also affect the customer's acceptance. In the manufacturing process, problems related to bonding are emerging in endlessly, such as poor appearance of glue and improper operation.

Therefore, from the perspective of after-sales and on-site statistics, there are various modes of bonding failure, and the reasons behind them also involve all aspects of the entire production and manufacturing process. This makes the bonding problem a systemic challenge, which not only increases after-sales maintenance costs, but also reduces customer satisfaction and market competitiveness.

If we can understand in advance and follow the DIN2304 standard for production, many bonding failure problems can be avoided. Many times, adhesive users subjectively believe that their operations are correct. Once problems occur, they often blame the adhesive itself. However, in fact, most of the failures of bonded joints are not due to insufficient strength of the adhesive, but due to lack of knowledge about the use of glue and incorrect operation.

The bonding process, like the welding process, is defined as a "special process" in ISO 9001. This means that these processes cannot be guaranteed to be 100% defect-free through subsequent non-destructive testing methods. Therefore, we must prevent errors in these "special processes" by implementing a quality management system.

The new version of the DIN2304 standard is not just a set of specifications, but a complete process chain, from the birth of the product to the final maintenance, ensuring the high quality of bonded joints. It plans the organizational structure, contract and technical requirements of bonding technology in detail, so that companies can take every step steadily and accurately in the process of using adhesives. In contrast, although ISO9001 lays the foundation for the quality management system, its broad content fails to penetrate into the technical details of the specific process. Therefore, companies need more detailed technical specifications such as DIN2304 to ensure the correct implementation of bonding technology.

The charm of DIN2304 is that it combines the technical requirements for bonding design, manufacturing, quality assurance and maintenance with a comprehensive quality management system, forming three core pillars: one is the classification of joints based on safety requirements; the other is clear Bonding supervision responsibilities, and the third is load verification for the entire life cycle of the joint. This standard has been widely used in European industry, especially in the fields of home appliances, automobiles, electronics and aviation, and has become an authoritative guide for bonding processes.

Just as rolling stock and rolling stock rely on the DIN6701 and EN15085 standards respectively, DIN2304 provides companies with clear and practical production guidelines. As China's industrial transformation continues to deepen, the price war in the past is no longer the only means of competition, and bonding technology, as a key part of industrial production, is increasingly valued by enterprises. Many home appliance, automobile, shipbuilding and aviation companies have passed DIN2301 certification, which not only improved their technical strength, but also set the threshold for the industry.

Yifa Bonding and Composites Research Institute, as the exclusive partner of German Fraunhofer IFAM in China, is committed to promoting the development of bonding technology in China. We provide certification audits, project support and consulting for EN17460 and DIN2304, and also carry out multi-level bonding training and examinations, including EAE European Bonding Engineer, EAS European Bonding Technician, EAB European Bonding Operator, etc. At the same time, we also provide composite material design and manufacturing, maintenance and technician training. So far, we have trained more than 5,500 engineering and technical personnel with bonding qualifications and helped more than 300 customers obtain qualification certificates issued by Fraunhofer IFAM. In the future, we will continue to help the Chinese industry achieve greater breakthroughs in bonding technology.