发明名称 |
Rolls and cylinders for use in paper machines |
摘要 |
A method for manufacturing a cylindrical mantle of rolls or cylinders of a paper machine out of a corrosion-proof metal or alloy material, particularly refined steel, in which oblong plate blanks are cut to a length equal to the total length of the roll mantle to be manufactured. The plate blanks are machined or bent to mantle portions of a cross-sectional shape equal to a part of a circular ring. Out of the mantle portions, the cylindrical mantle of a roll or cylinder is assembled by joining the mantle portions together by means of axial welding joints prepared by electron-beam welding performed in the vacuum chamber of an electron-beam apparatus by using a number of mantle portions per one roll mantle. A roll or cylinder manufactured by the method is also described.
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申请公布号 |
US5401232(A) |
申请公布日期 |
1995.03.28 |
申请号 |
US19930173993 |
申请日期 |
1993.12.28 |
申请人 |
VALMET PAPER MACHINERY, INC. |
发明人 |
SAILAS, VAINO |
分类号 |
D21F3/08;D21F3/10;(IPC1-7):B30B3/00 |
主分类号 |
D21F3/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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