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2017-05-07 发布于河南
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corner roll principle.ppt

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corner roll principle

Corner roll principle MCS training 2006-5-12 Corner Roll Positions Movement of the Corner Rolls The press corner roll is employed to adjust loading of the press bottom felt against the top felt. The corner roll is moved down to maintenance position during felt change. (角辊的功能是调整压榨上下毛布之间的负载，在更换毛布时角辊要移动到维修位） When starting the press, the corner roll must be in middle position so that the felts are not in contact with each other, yet. When the web is on the press section, the corner roll is in the operating position with the felts contacting each other. （当压榨开机时，角辊必须在中间位置以免上下毛布接触损伤．然而当正常运行时角辊要在运行位使上下毛布互相接触） As the web is taken onto the press section, the corner roll is set to the tail threading position, which provides more loading against the top felt and ensures safe web transfer.（当引纸时，角辊要在引纸位使底毛布与上毛布有较大的加载力，从而纸页可以顺利传递通过） Changing of press cornerroll position transmitter Repeat steps 3 and 4.重复第３及第４步 Step 7: Run the corner roll to position where mechanical pointer is zero (gap between bottom felt and transfer suction roll is 0 mm). Adjust measurement offset with debugger until position measurement is 0.0 mm. Measurement offset： 1st press: pr:1305-GHS-383.F:I11 (original value 49.9 mm) 2nd press: pr:1305-GHS-482.F:I11 (original value 145.0 mm) Position measurement 1st press: 1305-GT1-383 2nd press: 1305-GT1-482 Step 8: Modify new offset value into FbCAD drawing, save to Repository,check and on-line. Restore original threading and run position setpoints,see hardcopy of 9.12.90. ? Metso Paper, Inc. 2003 * GENERIC MATERIAL Metso Learning Confidential material – for use by Hebei PanAsia Longteng Paper Co., Ltd for project Stonebridge only (PM1) 1st and 2nd Press Lift of Corner Roll Corner Roll Trasnfersuction Roll 100 mm 20 mm Limit switch for Min/max position Linear sensor The corner rolls have four positions:角辊有四个位置 ? maintenance position (Service)维修位 ? middle position中间位 ? operating position