Jiangnan dryer Manufacturing Co., Ltd
Chairman he Weizhong

Papermaking information: as a well-known professional manufacturer of steel Yankee dryer, steel dryer and high-speed paper roller in China, Jiangnan dryer has nearly 30 years of dryer design and manufacturing experience. Please introduce the development history, main business scope and achievements of the company.
He Weizhong: Jiangnan dryer was founded in 1993, its predecessor is Daibu machinery factory. At first, Daibu machinery plant was reorganized and divided into six steel dryer manufacturing plants, such as Jiangnan dryer. Later, due to the small market demand and limited demand for dryer, only two enterprises were left after the market competition between 1996 and 2000. One of them also changed production. Only Jiangnan dryer still sticks to the position of dryer manufacturing, and through continuous market development, it provides food, beverage and other products Chemical, plastic, rubber and other industries supporting roller machinery.
 

Chairman he Weizhong is interviewed by our reporter

Jiangnan drying cylinder has 5 production lines at present, and the sales volume of Yankee drying cylinder in recent 6 years has reached more than 300 sets (sets)! Our Yankee oven is mainly used for newly built toilet paper machines and for replacing some of the cast iron ovens introduced from Japan and Europe. A large number of steel ovens are sold to Australia, Russia, the United States and other countries. At present, Weishi group, the first largest paper factory in Australia, has provided 3 batches of 24 sets of steel ovens, and gradually replaced the original cast iron ovens produced by the group in Europe. At present, the drying cylinders of PMP, asili and weimeide, etc. of foreign machinery and equipment manufacturers have been all matched by Jiangnan drying cylinder.
On June 21, 2019, the company independently developed and delivered 22 foot diameter steel Yankee oven to the market after 18 months of design and production. As the second largest diameter mg cylinder in the world (used for matching some special paper machines and tobacco sheet paper machines), the total height is 7.5m and the total weight is 190 T. it has reached the world leading level in quality and performance. It is the first 22 foot steel Yankee oven used in Asia for special paper production and application, which will make the paper machine achieve higher speed, higher width and higher efficiency.
In recent years, steel drying cylinder is widely used in toilet paper machine, special paper machine and high-speed cardboard machine. Compared with cast iron oven, steel oven has the advantages of fast heat transfer, high safety and high pressure bearing. It is made of steel plate. The diameter of the drying cylinder used on the board machine is mainly 1.5m and 1.83M. The large diameter drying cylinder is the development direction of the steel oven in the future. We will continue to cooperate with universities in R & D, with the aim of increasing the diameter of steel oven to 3m and the width to 8m, 10m and 12m, Help paper factories reduce the number of ovens, save the cost of plant and investment.

Delivery site of 22 foot diameter steel Yankee dryer







22 foot steel Yankee dryer delivered smoothly

Papermaking information: from the establishment of the factory in 1993 to the production of the largest 22 foot steel Yankee dryer in June 2019, it can be seen that Jiangnan dryer has never stopped moving forward in the development of domestic steel dryer. Please share with us what technical difficulties the company has broken through in the localization of steel dryer, What are the unique competitive advantages of current steel dryer products?
He Weizhong: the most important thing to do well is to focus. Through long-term scientific research cooperation with colleges and universities, strengthening communication with customers, and combining with its own technical experience and large-scale CNC equipment processing ability, the company optimizes all links from material selection, structural design to tooling process. Continuous innovation has been made in the design and manufacture of steel dryer and steel Yankee dryer, especially in the improvement of product safety, pressure bearing, heat conduction, energy saving and other performance, which has filled the gap in the localization of steel Yankee dryer and promoted the rapid development of China's paper equipment localization. For example, we cooperate with Nanjing University of technology, Nanjing University, Jiangsu University and other universities, through computer simulation experiments, to achieve the actual use of dryer simulation, greatly improving the efficiency of product effectiveness analysis, promoting product improvement and innovation.
Jiangnan dryer now has the right of self import and export, grade D qualification of special equipment production license (class I and II pressure vessels) issued by the General Administration of quality supervision, inspection and Quarantine of the people's Republic of China, and has passed the American ASME "U" steel seal certification and ISO9001:2008 quality management system certification. In April 2011, Jiangnan dryer was awarded the honorary title of "key supplier" by Metso Paper Machinery China Group Corporation. At that time, 23 Chinese enterprises were awarded this title. As one of them, it fully proves that the manufacturing process and quality of our paper steel dryer, roller, electroplating hard chromium and other products are not only in the domestic market, It has also been fully recognized in the international market. In 2015, the company obtained high-tech enterprise certification, and has doctoral workstation, technology research center, etc.
 

ASME steel dryer

As a leading manufacturer of steel plate mirror dryer in China, the mirror cylinder block produced by Jiangnan dryer is made of high-quality fine grain and ultrasonic grade I flaw detection steel plate, which provides guarantee for subsequent mirror treatment. It is mainly used in the production of digital photo paper, filter paper, thermal paper, plastic film and other products, of which the market share of digital photo paper is more than 95%.
Papermaking information: when we come to Jiangnan dryer production base, we can see that there are many kinds of roller products besides steel dryer products. Please share the production and sales of roller products.
He Weizhong: the roller production of Jiangnan dryer started in 2009 with the supporting roller for Andritz 2100 M / min paper machine, and then with the forming roller, guide roller, winding roller and other key components for Andritz tissue paper machine. Some products are sold to Finland, Russia, Uruguay, the United States and other countries.
Over the years, Jiangnan dryer has been innovating its design concept, processing technology and management mode. For example, the cold loading process is adopted in the key part of the roller shaft head to effectively prevent premature fatigue and fracture of the shaft head, and various types of rollers suitable for high-speed paper machines are successfully manufactured. The maximum speed can reach 3000 m / min, which not only replaces the imported products, At the same time, it also greatly reduces the purchase cost for the users.
 

High speed guide roller
 

In 2011, Ningbo Asia Pulp and Paper Co., Ltd. reformed the paper machine and increased the speed of the paper machine from 900 m / min to 1300 m / min. at that time, the paper machine had been running for six or seven years. According to the judgment of the paper machine manufacturer, the roller of the paper machine could not meet the production requirements and needed to be replaced. However, after our technicians' on-the-spot investigation, with the wisdom and efforts of all staff of Jiangnan dryer, the 9 m long roller has been fully repaired, which not only meets the quality requirements for continued use, but also meets the transformation requirements for speed improvement, which has been highly praised and recognized by paper machine manufacturers and Ningbo Asia Pulp and Paper Co., Ltd.
China's "one belt, one road" strategy has been promoted by the "paper making information". The South China drying oven has also gone abroad, pushing the "Jiangnan manufacturing" to the international market. Please talk about the achievements of Jiangnan dryer in "going out"?
He Weizhong: Jiangnan dryer has indeed made gratifying achievements in "going global". Through cooperation with Vermeer, Voith, Andritz, chuanzhijiang of Japan, asili of Italy, PMP of Poland, Papa of Finland, Yuli of Taiwan, Guangdong Baosuo group, Shanghai Qingliang, Xi'an Weiya, Mianyang Tongcheng, etc Guizhou Light Machinery Co., Ltd. and other domestic and foreign equipment manufacturers have established long-term cooperation to provide steel dryers for well-known enterprises at home and abroad, such as Vader group, APP Jinguang group, Zhongshun jierou, Jiulong paper, sun paper, Liwen paper, Heng'an group, Taisheng group, Australia Weishi group, Malaysia muda, etc. the products have been sold to five continents in the world. So far, more than 20000 steel dryers have been put on the market.
"Papermaking information": at the just concluded 4th China papermaking equipment development forum, your report of "inheriting the spirit of the craftsman, walking the road of self-improvement -- the rise of China's papermaking equipment steel dryer" was highly concerned and praised by the industry colleagues. Here, please talk about the role and accumulated experience of Jiangnan dryer in the localization of steel dryer.
The development of an enterprise depends on the development and attention of the whole industry. If Jiangnan dryer can achieve today's results, we must first thank the industry leaders for their concern and the support of the local government. In the localization of steel dryer, Jiangnan dryer has made some efforts and made some achievements.
He Weizhong: at the beginning of 2000, in the special paper industry, the mirror dryer we made for the production of medium high gloss digital photo paper replaced the high mirror dryer in Japan; In the food industry, our steel dryer solves the problem of limited pressure on cast iron dryer, and promotes the rapid development of the food cereal industry, with a market share of nearly 98%; The double channel cooling dryer produced by the company is widely used in special paper industry to replace imported products and effectively improve paper flatness. Since 2013, with the rapid development of China's household paper industry, Jiangnan dryer has broken the situation that only several famous European paper machinery companies monopolize the manufacture of steel Yankee dryer of tissue paper machine through continuous independent research and innovation.
 

Compared with the steel oven made abroad, the steel oven made by Jiangnan oven has a higher cost-effective performance, which can not only match the imported products in quality, but also lower than the imported products, which greatly saves the cost for customers. Of course, we are very proud and proud of our own contribution to the road of promoting the localization of China's paper equipment.
Paper information: Thank you, he Zong! It can be seen that under your leadership, Jiangnan oven has developed the craftsmanship spirit and created a new chapter of self-improvement and revitalization of domestic equipment manufacturing industry. In this paper, we wish Jiangnan drying cylinder better and better, and the domestic equipment manufacturing industry will be stronger and stronger.