The hottest tungsten carbide corrugating roller ha

Tungsten carbide corrugated roller has a large market

in terms of performance, the use of tungsten carbide coating ensures that the corrugated roller has sufficient hardness; The price is basically the same, but in terms of cardboard quality, tungsten carbide corrugating rollers can maintain unity in terms of corrugated height and quality

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normal> carton factory feedback

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normal> in 2004, after the concept of tungsten carbide corrugating rollers has been popularized, Zhejiang Huangyan Shidai carton factory bought a pair of tungsten carbide corrugating rollers from BHS at the beginning of this year. According to Chen Rong, general manager of times carton factory, the heart of corrugated board production line is single-sided machine, which is not only the first key part affecting the quality of paperboard, but also the key to controlling the cost. The corrugating roller is the core of the single-sided machine, which is the top priority, so choosing the right corrugating roller is a very important problem. At the beginning of 2004, Shidai carton factory purchased imported tungsten carbide tile rollers, which has been used for nearly a year and is far higher than the expected value, and even has the feeling of value for money. Chen Rong said, "in terms of performance, because of the use of tungsten carbide coating, the accuracy and force measuring stability layer of the experimental machine are determined by the quality of the sensor, which ensures that the corrugating roller has sufficient hardness. With this premise, we can produce a corrugated shape that is conducive to improving the strength of the paperboard, without considering that the designed corrugated shape cannot withstand the friction of the core paper." At present, the existing rock shaped ridge in the market and the lip shaped ridge of German BHS company are developed from the simple classification of the original U-type, V-type and UV type, which can make the paper give full play to its maximum physical indicators

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normal> in terms of price, 1600 cartons purchased by times carton factory × 305 imported tungsten carbide is less than 40000 US dollars, which is 2-3 times the domestic price. However, from the perspective of overall service life: the service life of imported tungsten carbide corrugating rollers is 35million meters, while the service life of domestic corrugating rollers is only 8million meters. Then the price of a pair of imported corrugating rollers plus the cost of one repair is equal to the work hardening repair cost of two pairs of domestic corrugating rollers. The price is basically the same, but in terms of paperboard quality, imported tungsten carbide tile rollers can maintain unity in terms of corrugated height and quality, while domestic tile rollers can have good quality paperboard when they are newly purchased or newly reground, but there is a certain amount of processing volume and corrugated height is high, which wastes the shrinkage rate of core paper and increases the cost. After 2 ~ 4 months of operation, the domestic corrugated roller is worn, the corrugated will become low, the quality of paperboard will decline, and finally affect the business development

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normal> expert voice: there is a large market for tungsten carbide corrugated rollers

normal> Boli paper factory Lu Xueli

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normal> the quality of a piece of cardboard depends on temperature, pressure and glue. The hardness of a piece of cardboard is soft or hard. In addition to the gram weight of the base paper, the biggest correlation is the ridge height and ridge type. Lenggao has national standards and specifications, with little difference. However, from the early U-type, V-type and UV type to the current V-type improved type (that is, there is an extra water drop shaped space on the tip of the ridge, which is conducive to glue and paper saving). The manufacturing technology of corrugated rods has also developed from early plating and soldering, to hardened plating and soldering coating, to tungsten carbide coating, to the latest NT coating. However, tungsten carbide is not widely used in China. The reason is that China is still unable to produce by itself and completely depends on imports. It may take six months to nine months to order or repair at a time. In addition, the import and export procedures are complicated, and the unit price of tile sticks is 2 ~ 3 times that of domestic Duro So that it cannot be popularized However, since BHS Shenzhen office established the spring testing machine as a special instrument for testing springs, the vigorous promotion of BHS company has gradually opened the market of tungsten carbide 7-ram position corrugated roller in China

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normal> why tungsten carbide has such a great charm? Lu Xueli believes that it is related to the following reasons:

normal> L generally, the thickness of soldering coating is about 50 wires, and the service life is about 8million meters to 20million meters. For tungsten plating, the thickness is about 15 ~ 20 wires, and the service life is guaranteed to be more than 20million meters. Generally, it can reach 35million meters to 60million meters under normal use

normal>l the hardness of plating and soldering is about 52 ~ 55 degrees (HRC), while the hardness of tungsten carbide plating is about 58 ~ 62 degrees. The hardness of the corrugated roller plated with tungsten carbide is higher than that of the corrugated roller plated and branded, so it is relatively not easy to wear and the corrugated shape is not easy to deform

normal>l corrugated rods rely on steam for heat transfer, and the upper and lower corrugated rods squeeze each other to shape the core paper. Therefore, the corrugated stick must be able to withstand high temperature and high pressure, and the heat resistance of tungsten carbide is more than twice that of plating and soldering. In terms of pressure resistance, the hardness is higher than that of plating and soldering, which naturally becomes a better choice

normal>l if the roller body is treated by neutron heating (spray coating), its hardness is higher and its service life is longer

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