| After-sales Service: | Provide Accessories, Video Instruction |
|---|---|
| Warranty: | 1 Year |
| Certification: | RoHS, ISO 9001:2000, ISO 9001:2008, CE |
| Surface Treatment: | Drilled Hole |
| Manufacturing Process: | Casting |
| Material: | Stainless Steel |
| Customization: |
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The vacuum couch roll is the last dehydration components of fourdrinier paper machine, and also is an important dehydration components of twin-wire former paper machine. Paper machine vacuum couch roll is mainly by vacuum pumping, is high-pressure difference dehydration.
The vacuum couch roll of a paper machine is to remove water by application of vacuum. It also serves as the final "wrap" where the wet web exits the forming fabric on its way to the wet-press section. The surface of the couch roll is covered with rows of small holes. Baffles within the interior of the couch roll direct the vacuum toward that segment of the roll where the wet web is on the fabric. Unlike vacuum boxes, an increase in vacuum does not increase the power needed to drive the forming fabric. However, too high an application of vacuum at the couch is likely to produce visible suction-hole "shadows" due to movement of fines within the sheet.
| Product Name | Vacuum Couch Roll |
| Application | Paper machine |
| Roller Material | Carbon/stainless steel,Aluminum alloy or other specified material |
| Diameter | 460-1600mm |
| Length | 2100-12000mm |
| Color | Customers' Request |
| Surface treatment | Trivalent chromium galvanized, chrome, paint, anodized, spray |
| Coating | Rubber |
| Quality Grades: | G1.0, G1.6 and G2.5 |
| Type | Make-to-order |
1.Has higher rigidity and mechanical strength. Its tensile yield strength and impact toughness are more than double that of copper, which is conducive to improving the dehydration rate.
2.Has higher hardness and abrasion resistance, good impact toughness. It does not deform during long-term high alternating load operation, which is incomparable with copper structure.
3.It has high hardness and abrasion resistance, has extremely high corrosion fatigue strength and ability to resist corrosion cracking and corrosion wear, which is 2-3 times that of copper alloys, and the service life is also increased by more than 2-3 times.
LEIZHAN is a China Based engineering company and machinery supplier committed to offer complate solution and provide high-cost-performance equipments related to stock preparation and paper-making industry.
For years,we have insisted on taking customer's value as our center and having strict quality-control and innovation in the whole process. With advantage technology and excellent equipment,we provide one-stop service from consultation,process design and optimization,manufacture,installation,commissing and personnel training and so on.
At the same time,we can supply all kinds of stock preparation and paper making equipment and accessories.Besides,we can custom design according to customers' requirements. Our products have reliable quality and superior performance and have been exported to Poland,Greece,Turkey,Iran,India,Packistan, Bangladesh, Thailand, Indonesia, Philippines, Malaysia, Vietnam, Mexico, Guatemala, Costa Rica, Columbia, Egypt etc.
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