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Forming Board, Foils, Vacuum Box Cover

Forming board, foils, vacuum box cover optimize sheet formation and dewatering while extending the service life of forming wires on medium- and high-speed paper machines.
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Product Description

The forming board, foils, vacuum box cover are advanced ceramic dewatering elements designed to enhance paper production efficiency and improve the longevity of forming wires in medium- and high-speed paper machines. These components combine precision engineering and high-quality materials to deliver optimal dewatering, sheet formation, and operational reliability.

Each element, crafted from wear-resistant ceramic with up to 99.8% alumina purity, offers exceptional durability. The seamless segments ensure smooth operation in the machine direction, reducing wear and enhancing performance. Tailored to suit various paper machine configurations, these elements are ideal for gap formers and Fourdrinier machines operating at different speeds.

Product Advantage

  • Superior Wear Resistance: Made with high-purity alumina ceramic (99.8%), these components resist abrasion, ensuring long-term performance.

  • Enhanced Forming Wire Protection: Unique double swallowtail and lock key structure prevent the "piano key" phenomenon, minimizing forming wire scratches and damage.

  • Precision Engineering: Seamless machine-direction segments improve dewatering consistency and sheet formation quality.

  • Flexible Application: Compatible with gap formers and Fourdrinier machines across varying speeds, meeting diverse production needs.

  • Optimized Dewatering: High-precision design supports efficient water removal, contributing to better sheet formation and production outcomes.

  • Durability and Longevity: Meticulous processing and installation ensure lasting reliability and reduced maintenance requirements.

Technical Parameters

Alumina content

95%

99%

Al2O3(%)

≥95

≥99

Density(g/cm3)

≥3.70

≥3.85

Absorption(%)

<0.1<>

<0.1<>

Bending strength(MPa)

>250

>300

Thermal Conductivity(W/m· k)

20-24

28-30

Thermal Expansion Coefficient(×10-6/K)

7.6-8

8-8.4

Using highest temperature(°C)

1400

1600

Dielectric constantΣ(1MHZ)

8-9

9-10


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