DIN2304 helps the home appliance industry achieve "zero-defect" bonding!

[Introduction] Modern industrial adhesive is a high-tech product. If used correctly, it can guarantee a "zero-defect" product. However, a large number of bonded joint failures are still common in the home appliance industry, and this is usually caused by the incorrect use of adhesives. This is the core of the DIN2304 standard: strict supervision of the bonding-related processes and organizational management related to bonding quality assurance.

Recently, a leading manufacturer in the home appliance industry in China invited experts from Shanghai Yifa Bonding Training Center to conduct a five-day professional training for the company. The company has been promoting a "zero-defect" corporate quality management culture, but it suffers from the lack of suitable means. Ensure bonding production quality. Therefore, during the training, the company's engineers could not wait to consult on a series of problems that arose in the production of its core product range hoods:

· The bonding between the glass operating panel and the aluminum plate frequently fails, causing problems with debonding and opening.

· The temperature in the south is low in winter, the viscosity of the adhesive becomes smaller, and the glass surface cannot form effective wetting.

· The bonding joints of the cabinet group often break open due to moisture expansion and must be returned to the factory for repairs.

In addition, there is also a lot of confusion in the organizational management related to bonding quality assurance:

· The bonding operation instructions are unclear and unable to guide front-line workers in construction

· Conflict between designers and craftsmen (technicians often think that they are experienced and cannot effectively implement the design plan)

· Product repair is like patching, repairing any broken parts. Lack of bonding design capabilities and inability to avoid problems from the design source

Common degumming problems of glass panels of range hoods in the home appliance industry

Common computer screen and frame debonding problems in the electronics industry

The problem of mobile phone screen debonding and light leakage

If the company can understand DIN2304 in advance and produce according to this standard, many bonding failure problems can be avoided. Adhesive users often subjectively believe that what they are doing is correct. Once a problem occurs, they blame the adhesive on the adhesive, believing that the failure of the bonding is due to the quality of the glue! But in fact, most of the failure problems of bonded joints are not due to insufficient strength of the adhesive itself, but due to lack of knowledge about the use of glue and operating errors.

In fact, the bonding process, like the welding process, is defined as a "special process" in ISO 9001, that is, the process cannot be 100% tested without any defects through subsequent non-destructive testing methods. For this reason, it is necessary to implement "error prevention" for "special processes" through the implementation of a quality management system.

The new version of the DIN2304 standard specifies the requirements for the entire process chain from product development to production and repair/maintenance to ensure the production of qualified bonded joints, and specifies a common organizational structure, contract and technical guidelines for the production of bonded joints to assist in the management of the bonding process. Therefore, a complete bonding technology system is used to ensure the quality of the entire process of bonding using adhesives.

ISO9001 only stipulates the most basic requirements for a quality management system (QMS) and does not stipulate the technical content of related processes. Although it provides a basis for quality assurance, it is too general and cannot be used as a dedicated means of quality assurance. Therefore, it is necessary to refine it into specific technical specifications and specify the corresponding process organization structure to ensure the correct application of bonding technology.

Different from the broad quality management system of ISO9001, DIN2304 combines the technical specifications of bonding design, manufacturing, quality assurance and maintenance with a complete quality management system, and has the following three core elements:

· Classify bonded joints according to safety requirements

· Division of responsibilities for bonding supervision

· Verification of loads/stresses sustained by bonded joints throughout their life cycle

At this stage, DIN2304 has become the bonding guidance standard for the entire European industrial industry, and has been rapidly promoted in the fields of home appliances, automobiles, electronic assembly, aerospace and military industries. These companies have completed certification through the DIN2304 certification agency authorized by the German Certification Committee DAkkS and issued certificates. Like the bonding standard DIN6701 and the welding standard EN15085 for railway vehicles that have been successfully applied to rail vehicles and their parts, DIN2304 provides enterprises with detailed and feasible production standards.

in conclusion:

Those who win the standard win the world. China is undergoing a profound industrial change. The past extensive economic growth model that relied on "price wars" to compete is no longer applicable. As an indispensable process in industrial production, bonding has gained More and more companies pay attention to it. Many companies from home appliances, automobiles, electronic assembly, aerospace and military industries have established their own technical advantages and industry thresholds through DIN2304 certification, and continuously promote the stability of internal bonding processes and the reliability of corresponding organizational management, thereby remaining in the fierce corporate competition. The place of defeat.

Note: Yifa Bonding and Composites Research Institute is the partner of Germany's FraunhoferIFAM personnel qualification training and technology transfer department in China. It carries out three levels of Chinese training for EAE European Bonding Engineer, EAS European Bonding Technician and EAB European Bonding Operator. training and Chinese language examination, conduct training related to DIN6701&DIN2304 bonding certification requirements, and provide enterprises with professional bonding project support, special training, bonding joint load and deformation calculation, test verification, finite element simulation, process evaluation and other services. As of March 2022, Yifa has trained nearly 5,000 bonding qualified personnel and assisted more than 270 Chinese companies to obtain DIN6701 and DIN2304 qualification certificates issued by Fraunhofer IFAM in Germany.

All rights reserved by Yifa Bonding and Composites Training Center, welcome to refer! Please indicate the source when forwarding