Jinling Grand Event Adhesive Future - The 8th "Bonding Day" Bonding & Composite Technology Exchange Conference (Part 2)

The excitement continues on the second day of the conference! There are a total of 9 speeches today. The speakers come from the automotive, rail transit, equipment and other industries, as well as from glue-using companies and adhesive manufacturing units. They are all experienced experts in various industries.

Summary of conference speech

      Wang Gong, a CRRC bonding expert at CRRC Tangshan Locomotive and Rolling Stock Co., Ltd., is mainly engaged in the design of rail passenger car bonding structures and research on bonding processes at CRRC Tangshan Locomotive and Rolling Stock Co., Ltd. Today he is giving a speech on the full life cycle of rail car bonded joints. During the entire life cycle of joints, it is necessary to focus on design, process, production and maintenance. Through the sharing of cases of bonding joint failure such as cracks in the exterior window sealant, we summarized the structural bonding: most of them are interfaces, the glue itself has good performance, surface treatment, construction technology, structural design, construction environment, production rhythm; sealing failure : Surface cracks, softening, environment: ultraviolet light, temperature, humidity, medium: cleaning agent, adhesive selection. In addition, non-destructive testing methods, bonding operator training and digital bonding system platform were also shared.

Zhao Gong, professor-level senior engineer of Datong Electric Locomotive Co., Ltd., today’s speech topic is: Application of composite materials in locomotive cab design. The inside and outside of the wall are paved with a mixture of carbon fiber and glass fiber (each layer has a different angle). The middle is filled with foam to form a sandwich sandwich. A partially embedded metal frame forms the main structure. The steel structure of the driver's cab and the external air deflector are integrated. The cab composite structure design is carried out through load and structural analysis, structural pre-design, sample production, parameter acquisition, finite element analysis and other methods. Verify the process plan by making a 3:1 scale model of the cab. Zhao Gong introduced the project design verification process and results in detail, and gave everyone a vivid structural design lesson.

Dr. Xu Xiongli, a senior training lecturer at Yifa Bonding & Composite Materials Research Institute and DIN6701 and DIN2304 auditor, gave a speech entitled: Analysis of typical cases in testing found during the audit. During the audit process of DIN6701 and DIN2304, Dr. Xu found many problems that did not meet the standard requirements. A large part of the problems were related to testing, including typical adhesive incoming material inspection tests, accompanying sample tests, process verification tests, and aging experimental tests. case. Dr. Xu shared his experience on how to improve testing levels: choose appropriate testing methods for different situations, bonding supervisors actively participate in the formulation of test plans and confirm test results, improve test operation instructions, and strengthen test personnel Training on bonding knowledge and testing skills, regular calibration of testing equipment, etc.

Ren Jianfeng, general manager of Shengtong Laser Intelligent Equipment (Jiangsu) Co., Ltd., the title of the report shared by Mr. Ren is: Application of laser technology in cleaning and grinding in metal and non-metal fields. Compared with traditional industrial cleaning methods, the characteristics and related applications of single-mode and multi-mode laser cleaning have obvious advantages in cleaning methods, workpiece damage, cleaning efficiency and effects, safety, environmental protection, and cost investment. The application fields and process characteristics of laser cleaning were shared, and actual cases were used to better demonstrate the cleaning effects of rust removal, coating removal, oxide layer, blue film, etc. It received widespread interest from participants.

Wang Jiudong, Chairman of Tangshan Derunda Technology Co., Ltd., has been engaged in the application of adhesives and bonding technology for 30 years. What he brings to you today is: the application of bonding technology in equipment maintenance. In the field of maintenance, bonding has the characteristics of rapid repair, wide applicability, and suitability for large-scale components. For continuous production enterprises, such as steel, chemical and other industries, it can avoid downtime and reduce production shutdown losses. The maintenance work surface is given new characteristics: heat resistance, insulation, wear resistance, wear reduction, etc. Through typical cases, he shared his bonding experience in the repair field in depth.

Shen Gong, technical engineer of CRRC Qingdao Sifang Locomotive and Rolling Stock Co., Ltd., what Shen Gong shared with you today is: a full-process bonding management system based on information technology. The entire bonding process covers five stages: structural design, planning preparation, first-piece trial production, mass production, and maintenance and application. Design and planning mainly rely on manual analysis. With the goal of standardizing bonding process design and managing basic bonding data, an bonding information system based on "technical standards as the foundation, bonding data as the support, and logical rules as the driver" has been built, forming 7 basic databases and developing 6 major functional modules. In order to achieve form-based work plans, streamlined process design, intelligent joint analysis, standardized file output, refined element control, and integrated supplier management.

Chen Xiuning, a senior training lecturer at Yifa Bonding and Composites Research Institute, the topic of Chen Gong’s speech today is: Interpretation and analysis of the EN17460 standard. EN17460 standard "Adhesive manufacturing of rail vehicles and their components". Technical Committee CEN/TC 256 "Railway applications" under the European Standardization Committee (CEN) introduced the EN17460 standard on the basis of the original DIN6701. The main purpose is to manage the structural Manage bonding applications from design to manufacturing to ensure an effective, repeatable, high-quality bonded joint. It covers key aspects such as bonding joint design, bonding process development, production and manufacturing, quality control, after-sales maintenance, and sales. EN17460 is applicable to railway passenger cars, railway freight cars, locomotives, urban rail, subway and other rail vehicles and their parts and components.

Li Gong, director of bonding supervision supplier management at CRRC Zhuzhou Electric Locomotive Co., Ltd., shared with you the impact of adhesive products on VOC and odor of rail transit vehicles. In the process of industrial design, adhesives, paints, floor cloths, rubber strips, sound insulation cotton, and foam materials are used in large quantities, which can shorten the vehicle manufacturing cycle, shorten the supplier's delivery time, and significantly shorten the delivery time after vehicle manufacturing. Compressed, but brought severe odor and customer complaints. VOCs and odors are attracting increasing attention. How to detect and control the impact of VOCs and odors in adhesives on products is the direction of future research.

Fang Dan, a senior training lecturer at Yifa Bonding and Composites Research Institute, the topic of Fang Gong’s speech today is: composite repair and bonding. Fiber-reinforced composite materials (FRP) are widely used in various industries due to their lightweight, high strength, design freedom, corrosion resistance, fatigue resistance and other advantages. With the development of higher-speed rail vehicles, higher requirements are placed on FRP applications. Fang Gong shared the repair methods and processes of various composite material defects through a large number of typical cases, which was refreshing to everyone.

During the entire conference, experts from different industries and fields shared their technical experience in bonding and composite materials. The exchanges were lively and there were frequent interactions on and off the stage. It was truly a great collision of thinking and a great update of knowledge, which truly reflected the The platform communication function of "Bonding Day".

Around the venue, the booths were crowded with people. Technical experts exchanged opinions on some problems encountered in actual production, and some new products were quickly recognized.

Zhongyuan Silande has brought "rail transit bonding, sealing and assembly solutions" this time, which can meet almost all glue requirements for rail transit vehicles. Including floor cloth adhesive, special adhesive, elastic adhesive, shock-absorbing and damping adhesive, sealant, etc., these are mature products. The products cover several major series such as polysulfide, silicone, butyl, epoxy, polyurethane, and film, and are widely used in automobiles, solar energy, LED, rail transit, military industry and other fields.

As a high-quality adhesive supplier in the rail transit industry, BOSS not only brings their world-beating series of "3, 5, 8" SMP adhesives and more cost-effective GCR series products, but also MMA's SAF series, GPU series of products as well as wide gap bonding products.

Shengtong Laser brought laser cleaning equipment to this exhibition. There was a product operation demonstration on site, which intuitively showed the processing effect of the equipment to everyone. The equipment has the ability to remove coating, rust, and decontamination on metal surfaces, and the effect is remarkable. It immediately attracted a large number of visitors.

 In addition, Changzhou Coffey, Qingdao Viotong, and Tangshan Weston, as suppliers of automated bonding equipment, all sent their company's technical experts. They had in-depth exchanges with the on-site students and fully introduced and demonstrated their own capabilities. Products and company’s professional and technical capabilities.

Qingdao Ruigao brought a portable 3D scanner this time, which has the characteristics of high efficiency, speed and precision measurement. 3D measurement technology is now widely used in many industries such as automobiles, aerospace, rail transit, and machinery manufacturing. Lishi Technology is a supplier specializing in mechanical testing instruments and equipment. Its main products are electronic universal material testing machines, electro-hydraulic servo fatigue testing machines, multi-axis coordinated loading systems and various special testing machines.

The "Bonding Day" conference serves as a technology exchange platform. Once new technologies appear, they can be directly captured by technicians and quickly applied to new designs, greatly reducing market search time. For suppliers, it also saves a lot of marketing expenses and time costs. The information sharing of "Bonding Day" is direct, fast and can be verified at any time. These are the charm of "Bonding Day".

Time flies, and the two-day compact "Bonding Day" conference slowly came to an end with the closing report of General Manager Zhang Yuxian. See you all in Nanjing next year!

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