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这些装备技术,代表中国纸机关键部件水平(下)-转自浆纸技术

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这些装备技术,代表中国纸机关键部件水平(下)-转自浆纸技术

【摘要】:
这些装备技术,代表中国纸机关键部件水平(下) 近年来,围绕高速、宽幅、节能、紧凑和自动化等方面,中国国产造纸机及其配套的关键部件取得明显技术进步。 In recent years, China’s homebred paper machines and key supporting components have achieved great progress in operation speed

Chinas Advanced Key Components of Paper Machines(II)

近年来,围绕高速、宽幅、节能、紧凑和自动化等方面,中国国产造纸机及其配套的关键部件取得明显技术进步。

In recent years, China’s homebred paper machines and key supporting components have achieved great progress in operation speed, wire width, energy saving, compactness and automation.

 

4、膜转移施胶

在传统的表面施胶方式浸渍施胶和辊式施胶的基础上,中国的装备企业如沙市轻机、山东昌华等单位开发了新型膜转移施胶技术。

沙市轻机开发的模块式刮棒膜转移设备,满足了纸厂将浸泡式施胶机改造成膜转移的需求,模块化设计及制造,降低了设备的改造周期和改造成本。图4为沙市轻机为湖南湘江纸业进行的改造实例——3300/600浸泡式改为膜转移式施胶机。另外,沙市轻机还为山东泉林纸业提供了6100/1200刮棒式膜转移设备。

4. Film transfer sizing

Based on the traditional surface sizing methods such as dip sizing and roll coating technology,

film transfer surface sizing was newly developed by China’s paper machinery suppliers, such as Shashi Light Industry Machinery Co., Ltd (SLMC) and Shandong Changhua Machinery Technology Co., Ltd.

The modular bar film transfer equipment developed by SLMC meets the needs for paper mills to transform the dip sizing type to a film transfer sizing equipment. And modularization reduces the transformation period and expenses. Figure 4 shows an example of the transformation of Hunan Xiangjiang Paper Co., Ltd by SLMC--a 3300/600 dip sizing type to a film transfer sizing machine. Additionally, SLMC also provided Shandong Tranlin Paper Co., Ltd with a 6100/1200 bar-type film transfer sizing machine.

 

 

 

4  浸泡式改造为膜转移式施胶机

 

5、帘式涂布

由于帘式涂布与传统的刮刀涂布、计量施胶压榨涂布相比较特点突出、优点明显、效果良好,成为目前研究开发的热点产品。其应用领域已从特种纸向普通纸与纸板领域发展,尤其是涂布白纸板、轻量涂布纸、牛皮卡纸或涂布箱纸板。

沙市轻机开发的幕帘涂布试验机,安装于中国制浆造纸研究院试验纸机上(如图5),满足车速800m/min的帘式涂布中试要求。

5. Curtain coating

Curtain coating has become a hot topic of research thanks to its outstanding features compared with the traditional blade coating and metered sizing press coating. The application of curtain coating have extended from specialty paper to other paper grades, especially the coated ivory paperboard, light-weight coated paper, kraft cardboard and

coated cardboard.

The curtain coater (Figure 5) developed by SLMC has been installed on a coating machine in China National Pulp and Paper Research Institute (CNPPRI), meeting the requirements for curtain coating pilot test at an operating speed of 800m/min.

 

 

 

5  沙市轻机和中国纸院合作的幕帘试验机

 

沙市轻机制造的EvenCurtain帘式涂布,适用幅宽及车速为880~6000/1800,具有如下特点:适用于绝大多数纸及纸板品种涂布,车速及涂布量涂布范围广,可满足涂料高固含量的运用;唇口直线度±0.004mm,流道抛光精度≤Ra0.02μm;涂层覆盖性好,较佳的CD≤±0.5%及MD涂布量获得;优良的操作及运行稳定性。

The EvenCurtain coating machine manufactured by SLMC is suitable for the paper machines with width of 880-6000mm and operating speed of 1800mm/ min. It can be applied in the coating of most types of paper grades, and meets different requirements of operating speed and coating demands. It also satisfies the use of high solid content coatings. The EvenCurtain coating is also featured with accurate coating lip straightness (±0.004mm), high polishing degree of f low channel(≤Ra0.02μm), good coating coverage, and accurate coating weight control in both cross direction(≤±0.5%) and machine direction, as well as excellent operating stability.

 

 

6、钢制扬克缸

在生活用纸机上,钢制扬克烘缸正逐渐替代铸铁扬克烘缸。这是由于钢在韧性、热传导和安全性方面与铸铁相比有较大的优势,缸面喷涂硬质合金涂层,表面比铸铁更加坚硬,涂层能提高纸页品质,延长烘缸寿命和维护周期。在其它条件相同的情况下,钢制烘缸的缸体厚度可减少约30%,意味着干燥效率可提高30%,对行业节能意义重大。

山东信和、溧阳江南等抓住机遇,开发出具有国际先进水平的钢制扬克烘缸,在中国乃至世界得到推广应用。

6. Steel Yankee dryer

When it comes to the tissue machine, cast iron Yankee dryer is now being gradually replaced by the steel Yankee dryer. Compared with iron, steel has the advantages in toughness, heat conduction and safety performance. The steel surface coated with hard alloy is much harder than cast iron. The carbide coating is able to improve the sheet quality and prolong the lifetime of dryers and maintenance cycle. It is of great signif icance for energy conservation because the cylinder thickness of the steel dryer can be reduced by about 30%, which means that the heat conducting efficiency can be increased under the same condition.

Nowadays, advanced and world-class steel Yankee dryers have been developed by some Chinese machinery suppliers, such as Shandong Xinhe Paper-making Engineering Co., Ltd and Liyang Jiangnan Dryer Manufacture Co., Ltd., which is widely applied in the paper industry of China and the globe.