Creative Technologies of the Thermally Sprayed Coating, “KX ROCK”, for Press Roll

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Other Title
  • プレスロール用溶射皮膜「KX ROCK」の創造技術
  • プレスロールヨウ ヨウシャ ヒマク KX ROCK ノ ソウゾウ ギジュツ

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Abstract

Recently, the requirement of high productivity in papermaking industry demands increasing the size and the running speed of papermaking machine, thus press-roll in the papermaking machine requires continuous improvement of the durability and stability.<BR>In the past years, the press-roll replaced drastically the natural granite stone in whole roll with an artificial ceramic coating in the surface only. This artificial ceramic coating in the surface requires not only good mechanical and chemical properties, such as resistance to wear and corrosion, but also surface properties, in which the condition of releasing paper off the roll surface, i.e. the draw property, and without contaminations attached are important.<BR>The “KX ROCK”, which is ceramic coating by thermal spray for the press-roll, was developed as a replacement of the granite stone roll. The “KX ROCK” coating shows a superior draw property due to optimized surface roughness and wettability by the coating material. Especially, surface energy of the “KX ROCK” is higher than that of original stone roll, which leads to a good wettability, resulting in a better paper releasing property. And in addition, the “KX ROCK” also shows a good wear resistance and a perfect protection of base material from corrosion.

Journal

  • JAPAN TAPPI JOURNAL

    JAPAN TAPPI JOURNAL 61 (1), 36-41, 2007

    JAPAN TECHNICAL ASSOCIATION OF THE PULP AND PAPER INDUSTRY

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