Steel coil is lifted and put on coil skid,
which receives only one coil. The loading car moves to the position under the
coil skid, and the coil up-down hydro-cylinder raises the steel coil. Driven by
hydro-cylinder, the coil car moves and stops before the shrunk recoiler drum. Raise
slowly the coil car by manual inching so that the coil center aims at the drum
center. Move the coil car forward so that the center of the coil width is
almost in line with the center line of the machine. The coil drum is expanded
by hydro-cylinder, and the press roll goes down. The decoiler guiding plate
goes up. By turning the coil drum, the end of the coil through the flexible
guide plate is lead into No.1 pinch roll, and it, afterward, passing through
the thickness gauge and deoiler rolls, is sent into the entry guide plate.
After the end of coil gets through between the rolls, let the mill go down,
pressing the working rolls against the steel strip. The operation of main motor
takes the end of coil to the clamping mouth of No.2 recoiler, after passing
through the thickness gauge and No.2 pinch roll. The coil drum is expanded so
that the end of coil is pressed tightly at the clamping mouth. After the
recoiler turns for 11/2-3 loops in direction of taking up coils, pre-set the gap between the
rolls of the mill , and the front and back pulling force as well. Put into
operation the systems of process lubricating, oil removing, gauge measuring,
tension measuring and thickness controlling. Get the mill started, accelerated
and proceed the rolling.
At
the time when the rolling is nearly over, get the mill decelerated and stopped;
make the end of coils stops at No.1 recoiler. Take reversing rotation of the
machine and send the end of coil into the clamping mouth of No.1 recoiler. Synchronizing
with the operation of the line, let the recoiler turn in the direction of
taking off coils for 11/2-3 loops. Let the mill go down according to process, and set the
front and back tension. After put in operation of the systems of process
lubricating, oil removing, gauge measuring, tension measuring and thickness controlling,
get the mill restarted, accelerated and proceed the rolling in reversal
direction. After rolling forward and backward for several times, and when the
coil is rolled to the required thickness, release tension from recoilers from
both sides, and raise the rolls of the mill. The recoiler from the removing
side turns slowly. Keep pressing roll of recoiler touching the coil.
Synchronizing with the operation of the recoiler, finish rewinding the coil. After
the recoiler drum is shrunk, the coil car must be ready for the unloading coil.
Operate the unloading car to take out the steel coil. Put the coil on the skid,
where unloading car returns. Operators bundle up the coils manually.
Cold Rolling Mill Cold Rolling Mill Suzhou SPT Technology Co.,Ltd , https://www.chinatubemill.com
On the one hand, it shows that the degree of agricultural mechanization in our country is far from enough; on the other hand, it also shows that there are still big gaps in our consumption philosophy. The drying of crops directly affects the quality of crops. For example, the "burst" and cracks of rice are not caused by threshing, but are problems of drying methods and drying processes. Different drying methods and drying processes will also affect the taste and nutritional content of crops. It is believed that as China's process of fully pursuing a well-off society continues to accelerate, people's consumption concepts will also undergo profound changes. 'Prof. Pan Yongkang said:' Drying technology research mainly refers to the drying theory, drying process and drying equipment research.
The focus of the theory of drying today is not the phenomenon of the transfer outside the material but the phenomenon of the internal transfer of the material during the drying process. A wide variety of materials are being dried, and the texture and transfer characteristics of the materials are changing during the dehydration process. Therefore, although a lot of work has been done on the international front, it is still not ideal and it still cannot solve the problem. As of today, the dry conditions are still largely determined by experimentation and experience. At the same time, domestic and foreign scholars have done a lot of research on drying processes and equipment.
There are more than 70 universities, research institutes and a large number of experts in drying technology research in our country. In China, some research and development of grain drying, drying of biological materials, drying of vegetables and fruits, and some new drying equipment are at the forefront of the international level. Although China's drying equipment manufacturing companies generally have weaker research and development, they don’t invest much. But there are also some very good product development projects, such as self-cleaning rotary cylinders, closed-cycle organic superheated steam helium particle fluidized bed, large-scale spray fluidized granulation, 45 tons of large-scale spray drying equipment, etc., but unfortunately, Most of the technology developed is in a state of confidentiality and usually does not openly engage in academic exchanges.
According to MUJUMDAR, there are at least 200 international-level drying experts in the former Soviet Union. Drying technology was the world leader before the 1980s, but due to national conditions and language barriers that have affected their integration into the international drying industry, they are rarely seen today. To the brilliant papers they published, we should take warnings in this regard.
In order for China's drying technology to catch up with the international advanced countries, there are many things to do, but the close integration between the academic and industrial circles is one of the most important factors.
In this regard, we started earlier. We have jointly developed and researched spray drying technologies with universities and research institutes such as Dalian University of Technology and China Academy of Forestry. We not only won the favor of the domestic market, but ended our country's past relying on imports of spray drying machinery. The situation also broke into the international market.
In this regard, in recent years, we have published more than twenty academic papers at home and abroad, and we have translated and published his book “Principles and Equipment and Processes of Drying Processes†through the exchange of technical information with Prof. MUJUMDAR; and Canadian CANMET Energy Research Center. In the aspect of drying of organic waste, extensive exchanges and cooperation were carried out; a medium-low pressure spray dryer was jointly developed with the Reckov Institute of Heat and Mass Transfer of the Belarusian National Academy of Sciences; and the University of Technology in Lodz, Poland, also carried out various aspects. Cooperation, including technical exchanges, cooperative research, etc.
The "spray fluidized bed granulation technology" that we jointly researched and developed has been included in the cooperation projects between the two governments. China has already joined the WTO and must work hard to research and develop technologies and products with independent intellectual property rights. At present, the two doctors we cultivated from home and abroad have been enriched to Tianli Company. In the future, we must further enrich our technology and increase our efforts in development.
Everyone agreed that: China must develop from a large dry country to a dry and strong country, and we must further strengthen basic theoretical research and lay a solid foundation for applied research and application development. We must strengthen the degree of automation, testing techniques, manufacturing processes, and materials and materials design in technology. Other aspects of research. In terms of application development, it is necessary to focus on international exchanges and cooperation, but also on the protection of intellectual property rights; it is necessary to pay attention to the development of new technologies and new application areas, but also to focus on innovation and innovation in traditional processes and traditional application areas.
As a manufacturing company, we must work hard on management innovation and technological innovation, work hard on product upgrades, adjust the product structure in accordance with the requirements of high quality, low energy consumption, and environmental protection, cultivate competitive advantages, promote honest services, and promote enterprise development.
The potential market for drying machinery in China is huge
The application of drying technology in China is by no means confined to the chemical industry but it is widespread across industries. With the continuous development and progress of science and technology, the application of drying technology will be further broadened and the potential market will be very large. Taking agricultural products as an example, the drying equipment for agricultural products owned by Japan is roughly 1.5 to 1.7 million units, compared with only 20,000 units in China.