New development of Chinese barrel technology

New development of Chinese barrel technology

Yang Wenliang

In recent years, with the rapid development of China's economy and technology, steel drum manufacturing technology has also developed rapidly. From the aspects of products, processes, materials, equipment and theoretical research, it has begun to be in line with international standards. Today, we will briefly introduce the latest developments in technology in China's steel drum manufacturing industry.

First, the international development of steel drum products

As China's opening up has further deepened, national standard steel drums have been restricted in export packaging. In recent years, many steel drum companies in China have begun to carry out international improvement of products. Among them, ISO international standard steel drums, container steel drums and tapered open steel drums are among the fastest growing. The steel drum sealer has been fully internationalized.
ISO international standard steel drums are mostly used for exporting chemical product packaging. With a standard diameter of 571mm and a capacity of 42 gallons, this is the most promising steel drum product in China.

Special steel drums for containers, often referred to as W-reinforced steel drums in the industry, are improved in combination with national standards and Italian standards. They are a transitional product between national standard steel drums and international standard steel drums. The maximum diameter of the ring of the steel drum is smaller than the national standard steel drum, which not only saves the space occupied by the steel drum in the container transportation, but also strengthens the strength of the steel drum.

The tapered open steel drum is completely produced in Italy and is used for packaging food materials. It has been widely used in western China and is mainly used for export packaging of ketchup and jam. The main feature of this steel drum is that the empty barrel transportation cost is low, it is easy to recycle and handle, and the space occupied in container transportation is more reasonable.

The closed structure and size of the closed steel drum have completely adopted the international standard inch sealer, which fully realizes the international generalization transition.

Second, the environmental protection of steel drum raw and auxiliary materials

The raw and auxiliary materials used in the manufacture of steel drums have begun to move forward in the direction of environmental protection, especially in the large-scale use of thin steel sheets and the application and research of environmentally friendly coatings.

In recent years, the thinning of steel drums has become the main development direction of China's steel drum products. At present, various enterprises have used a large number of steel plates of 0.8-1.0mm to produce 200-liter steel drums. In the field of tapered open steel drums, 0.6~ have been widely used. 0.8mm thin steel plate production saves resources and reduces the cost of steel drums.

The most prominent development in the coating of steel drum coatings is the development of waterborne coatings and powder coatings. Since the environmental pollution caused by VOCs produced by organic solvent-based coatings has been widely recognized, in recent years, water-based coatings and powder coatings have been used in China for the coating of steel drums, which is the main development direction of steel drum coatings in the future. .

In terms of the internal coating of steel drums, China has developed rapidly. The special inner coatings for steel drums based on Shanghai Xugong Coatings have entered the world's advanced ranks, and many of them have obtained international certification.

In recent years, China's pre-coated steel coils have developed rapidly. In the near future, pre-coated coils will be widely used in the steel drum manufacturing industry, becoming the main raw material for steel drum production, and the steel drum coating process from the steel drum production process. Remove, truly achieve environmentally friendly and efficient production.

Third, a variety of advanced processes have been applied in the production of steel drums

In order to improve the product quality and production efficiency of steel drums, a variety of advanced processes have been applied in steel drum production in recent years. Among them are zinc-plated barrel zinc-increasing process, steel drum surface treatment process, multi-color steel barrel coating process, screen printing process, thermal transfer printing process, tantalum leak detection technology and so on.

When a steel drum is produced from a galvanized steel sheet, the zinc layer at the weld is damaged. In order to carry out the zinc layer recoating at the weld, Shanghai has developed an automatic zinc filling machine for welding, which improves the zinc quality and production efficiency of the weld.

In order to obtain better coating quality, most of the barrel companies have established steel drum surface treatment production lines, using advanced surface treatment technology and treatment liquid, which greatly improves the coating quality and production efficiency.

Now, with the continuous improvement of market demand, multi-color coating of steel drums has become the main development direction. We use high-pressure airless spraying technology to achieve multi-color coating of steel drums. At present, barrel making enterprises are improving the process to meet the needs of multi-color steel drums.

The development of China's Dacromet coating technology provides a new coating method for steel drums. It can replace galvanizing and is the best alternative to galvanized barrel production, which not only effectively reduces environmental pollution, but also reduces production. cost.

In recent years, more screen printing and thermal transfer printing processes have been widely used in the printing and printing of steel drums. A series of new printing processes suitable for steel drum printing are continuously transformed to adapt. The production of steel drum logo printing.

In order to improve the accuracy of the steel drum leak detection process, we have developed a helium mass spectrometer leak detector that is suitable for the production of steel drums. This technology has entered the first stage of the international barrel industry.

Fourth, the latest development of steel barrel manufacturing equipment

In recent years, with the continuous development of China's steel drum market and the intensification of competition, users not only have higher requirements for the quality of steel drums, but also put forward higher requirements for the production efficiency of steel drums. The specialization of China's barrel equipment has been further improved, and a number of competitions have been continuously innovated.

At present, a number of enterprises have realized the transformation of the fully automatic production line for the unwinding of steel coils. There are some more advanced enterprises that realize the automatic production of unwinding → leveling → blanking forming → scrap cutting → barrel punching → coil pressing → finished product stacking, which greatly improves production efficiency and reduces labor costs.

The transformation of the seam welder and the successful development of the fully automatic seam welder have made the barreling equipment a big step forward. In order to improve product quality, in recent years, many domestic enterprises have modified the original domestic semi-automatic seam welding machine, improved the control system and mechanical devices, reduced the seam welding edge to 4mm, improved the production efficiency, and eliminated the spot welding positioning process. . The automatic steel barrel seam welding machine developed by Shenzhen Junteng has been successful, which has improved the seam welding efficiency by 4 times and greatly improved the quality, making the dream of automatic seam welding of most domestic barrel enterprises become realized. .

The processing equipment for the middle section of steel drums has developed rapidly in China. At present, more than ten enterprises have specialized in the development and production of barrel-making equipment, which has formed a new situation of blooming. New types, high-quality, high-efficiency barrel-making equipment are constantly emerging, and some barrel-making equipment is exported abroad, which is highly praised by foreign friends. Now, China's barrel equipment market has entered a new round of fierce competition. This situation is conducive to the innovation and improvement of equipment. In the near future, China's barrel equipment will surely enter the world's advanced ranks.

The development of steel drum coating equipment is one of the fastest growing branches in barrel making equipment, because steel drum users are increasingly demanding coatings, making coating equipment constantly innovative and perfect. At present, many enterprises have realized the automatic production of multi-station, multi-color, high-pressure airless spraying, and the full automation of gas and fuel drying. These devices not only have high production efficiency, good process quality, but also fully consider the requirements of environmental protection. Due to the application of various environmental technologies, the environmental pollution of the coating production line is continuously reduced. At present, the catalytic combustion environmental protection furnace successfully developed by Shanghai overseas Chinese has realized the recycling and reuse of waste gas in the paint drying room, which not only reduces environmental pollution, but also saves energy and reduces costs.

For the printing of steel drum marks, a variety of screen printing machines and thermal transfer printing machines have been developed in China, which has realized automatic production, which not only improves printing quality, realizes color printing, but also improves production efficiency.

The steel barrel enamel leak detection technology is realized by the development of automatic steel barrel leak detector. The steel barrel enamel automatic leak detector developed by Hefei Puyi has achieved success in the barrel industry, making the traditional air pressure seepage. The leak test machine has gradually become a thing of the past, greatly improving the accuracy of leak detection, and the surface quality of the steel drum is guaranteed because the soap liquid is no longer used, thereby improving product quality and production efficiency.

V. Advances in theory and practice have led to continuous improvement in barrel technology

After years of development in the Chinese barrel industry, the barrel making technology has made great progress, which is inseparable from the long-term unremitting efforts of the technicians in the barrel industry.
The only magazine in China's barrel industry, Steel Barrel, has been in existence for more than 20 years and plays a very important role in the development and popularization of the technology in the barrel industry. It is a historical witness of the technological development of the barrel industry.

The continuous research and innovation practice of barrel technology has gradually formed a complete technical field. Recently, the "steel barrel manufacturing technology" edited by industry expert Yang Wenliang and others has been published, which is a complete process for the Chinese barrel industry technology. In conclusion, it will provide theoretical guidance for the overall development of the barrel industry technology and become a milestone in the development of China's barrel industry technology.

We have reason to believe that as China's barrel industry gradually moves to the world, China's barrel technology will catch up with and surpass the world's most advanced level in the near future.