and tungsten carbide

For many years, the quality of the corrugated roller cartons has been plagued by domestic enterprises. In December 2001, Shanghai everbright corrugated packaging exhibition, Germany fly wire
(Friese) to domestic containing cobalt and Tungsten eletrodecorrugated roll are introduced, and the first to bring home a cardboard-box factory and was the feeling that find everything new and fresh; In June 2002, in the bar
Li Guoji corrugated exhibition, international famous corrugated roller manufacturers launched all kinds of high quality corrugated roll, including tungsten carbide corrugated roll clueless;
In late 2002, the domestic several considerable size of the cartons enterprises to start importing tungsten carbide roller; Until February this year, the Shanghai big pine (corrugated roller) industrial co., LTD
Company will start formal tungsten carbide corrugated roll into the market, become the first domestic a tungsten carbide manufacturer. The spring breeze of the tungsten carbide corrugated roll if you can
Through China, see our understanding to the tungsten carbide roller application in domestic.
By roughly understanding, learned that the tungsten carbide corrugated roll, long life, high precision, after-sales service is also good, so the fly wire bought a pair of Germany in 2002
Tungsten wire corrugated roll. Overall effect, life can be, the only think the price is higher, haining pavilion creek, says Mr Zhuo of packaging co., LTD.
The tungsten carbide roller is equivalent to two pairs of domestic ordinary corrugated roller price. 1 year after the purchase made a grinding. Due to imported from abroad, must send grinding
Abroad, not only cost is higher, and the time is long, become a purchase the tungsten carbide corrugated roll only regret. If the tungsten carbide corrugated roll in China
Has ability to repair, after-sales service to keep up with, the overall price down some, prospects should be good.
Used for more than a year, obviously feel the tungsten carbide roll wear are very small, and relatively long service life, use had not changed in over the past two years, compared with six months before change
A roller frequency, tungsten carbide roller long life a lot, but basically there is no wear and tear. The price of tungsten carbide roller is relatively expensive, but
Is Mr Ouyang interviewed well so a account for us: price, tungsten carbide roller is 2.5 times of ordinary corrugated roller, use one and a half years,
Ordinary roller in 2 ~ 3 times already. The 02 purchases roll can use 1 year, in this case, although one-time investment is larger, but take a long-term view
It is very value. And roll changing by human, material and financial resources is an estimate and change frequency decreases, the losses correspondingly
To reduce. Mr Ouyang believes that although the once only investment of tungsten carbide roller is larger, or there is a big market space, the key is must mature process.
But the benefits of tungsten carbide roll, there is some shortcomings also. According to Mr Ouyang said, because of the roller hardness is larger, so the work is better than the noise
The original corrugated roller.
As the first domestic manufacturer of tungsten carbide corrugated roll, big pine Lin from Shanghai has found that affect the quality of tungsten carbide corrugated roll production equipment large pine
USES the international first-class equipment; Price is also relatively more in line with national conditions; In addition, due to the large industrial and mining condition is very loose on the domestic a cardboard-box factory understanding, such as domestic
Larger paper sediment concentration, etc., on craft is more close to the domestic production needs. So he think it is a big loose tungsten carbide corrugated roll in from abroad
Mouth roll is more suitable for the domestic market.
In early 2004, imports of tungsten carbide roller, the use of nearly a year think well above expectations in advance, even feel content value. Mr. Chen said
Said: "from a performance, because use tungsten carbide coating, guarantees the corrugated roller has enough hardness. With this prerequisite, can produce a help
High strength of paperboard stare blankly shape, rather than to consider the design of shape are core paper friction. Currently on the market for rock shape stare blankly and BHS Germany company
Lip stare blankly is from the U, V, on the simple classification of UV type, developed the more able to make the paper play its biggest stare blankly physical indicators.
Purchase price, our factory import tungsten carbide is less than $40000, 1600 x 305 is 2 ~ 3 times the price of domestic companies. But in the whole life
Analysis: the imported tungsten carbide corrugated roll is 35 million meters long, and domestic corrugated roll life span is only 8 million meters long, then a pair of import tile roll price plus a fix
After fees, is equal to two pairs of domestic corrugated roller work hardening time repair costs. Basically the same in price, but for the cardboard quality, imported tungsten carbide
Roll on the corrugated stare blankly is high, the quality can maintain unity, and the domestic tile roll on new purchases or a new mill when can have the good quality of cardboard, but has certain processing is put
Quantity, corrugated stared blankly on the high side, the wasted paper shrinkage rate, increase the cost. Domestic corrugated roller run after 2 ~ 4 month tile roll wear, corrugated will become low, the cardboard
Quality decline, and ultimately affect business development. "
Also specifically pointed out that because of the hard tungsten carbide coating, in the same corrugated stare blankly, tungsten carbide corrugated roll can do more of the corrugated type
Steep, that is, from the original type U to UV, into a "V". In short is to reduce stare blankly tip arc, in corrugated core can significantly reduce the shrinkage rate of paper.
To general AB double tile board, there were two core paper, reduced by 3% per side, each square board there will be a 6% reduction of profit margins.
Machinery manufacturer, of course, they can provide us with less corrugated cardboard-box factory choice type of shrinkage, but buyers must consider to be clear about, because
For different going a while at high, stare blankly, sharp radian and different high, for flat crush strength of paperboard, marginal pressure strength and puncture strength have different effects
, must carefully choose a good equipment suppliers, joint of this plant commonly used corrugated base paper, consultation with the engineer, choose the most beneficial type corrugated tooth. a
To avoid one-sided pursuit of the lowest corrugated shrinkage rate, tooth type on silk, very sharp available and minimum corrugated core in the paper, in the process of forming silks,
Paper cannot smoothly molding, manufacturing medium-voltage detonation, the consequence is not worth the cost and to increase core paper grades.