Pressure distribution in a two-roll mill.

• MURAKAMI YASUHIRO

  Department of Chemical Engineering, Kyushu University

• CHUNG GISHI

  Department of Chemical Engineering, Kyushu University

• TENDA TSUGIO

  Department of Chemical Engineering, Kyushu University

• HIROSE TSUTOMU

  Department of Chemical Engineering, Kyushu University

• AKIMOTO Yun

  Department of Chemical Engineering, Kyushu University

抄録

An asymmetric pressure distribution in a pair of rolls rotating at equal and unequal speed for Newtonian fluid was obtained by lubrication model analysis and was compared with experimental values. The work was carried out with a pair of rolls of radius R = 8.2cin in the range of fluid viscosity μ = 1.5-15 Pa•s, half of minimum nip clearance h₀ = 35-390μ/m, mean roll speed u_m = 0.26-1.56 m/s and roll speed ratio N_r = 0.5-7.<br> The experimental pressure profiles and force separating rolls are well represented by the calculated values in the region of N''_ca (= μu_f(R/h₀)²/γ)<2.5 × 10⁷, where γ is liquid surface tension. In the range of N''_ca>2.5 × 10⁷, the absolute values of the minimum pressure decrease with increasing N''_ca. The theoretical pressure distribution can be well corrected by considering that the liquid film separating point predicted by the theory comes near to the minimum nip.

収録刊行物

• JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

  JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 18 (5), 450-455, 1985

  公益社団法人 化学工学会

キーワード

• Fluid Mechanics
• Roll Mill
• Pressure Distribution
• Laminar Flow
• Rotating Rollers
• Milling

詳細情報

• CRID: 1390282679542306688
• NII論文ID: 130000788760
• DOI: 10.1252/jcej.18.450
• COI: 1:CAS:528:DyaL2MXlvFOqsLo%3D
• ISSN: 18811299
• ISSN: 00219592
• Web Site: http://www.jstage.jst.go.jp/article/jcej1968/18/5/18_5_450/_pdf
• 本文言語コード: en
• データソース種別:
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  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可