Thin bands and method and apparatus for production thereof
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United States of America Patent
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-
Feb 4, 1986
Grant Date -
N/A
app pub date -
Aug 8, 1983
filing date -
Aug 8, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A rolling mill for making endless bands, preferably by cold working precipitation hardenable stainless steel, includes a stationary central work roller and a pair of moveable work rollers, each carried by a corresponding carriage. The movable work rollers are backed by intermediate and drive rollers so as to be stiff in response to bending forces. The drive rollers provide rotary motion to all rollers. By elastically distorting a preform and then rolling it in the peripheral direction, the band is cold worked to a desired thickness. The preform may be obtained by parting an annular ring from tubular stock. Subsequent precipitation hardening of the cold worked band produces a stainless steel band having enhanced strength and endurance, and which is free of welds and similar discontinuities while exhibiting stress relieved edges rather than stress concentrated edges.
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