Winding – tensioning – or guiding – Loop forming – With particular loop or coil transfer mechanism
Reexamination Certificate
2005-07-12
2005-07-12
Marcelo, Emmanuel (Department: 3654)
Winding, tensioning, or guiding
Loop forming
With particular loop or coil transfer mechanism
C242S437000
Reexamination Certificate
active
06915978
ABSTRACT:
This invention relates to rolling and in particular to the process of rod coil forming, for instance, of steel and nonferrous metals, and to a set of equipment for its realization.The method of rod coil forming includes continuous rod feeding through a wire-rod guide, forming of waps with a variable diameter by means of speed variation of wire-rod guide rotation and stacking of waps by horizontal layers throughout the height of a coil. The difference of the applied method is in the fact that the rod is fed at a speed of 35-300 m/s. Forming of waps with a variable diameter is realized under the influence of dynamic forces by means of rod declination at the wire-rod guide outlet at an angle of 15-80° with the axis of rotation and its following feeding in a curved concave path with rotation at an angle of 80-90° with the axis of wire-rod guide rotation, in this case speed of wire-rod guide rotation is varied with respect to the following ratio:ω 〉0.465×σT,where:ω—angular speed of wire-rod guide rotation,σT—yield point of rod material,A conveyer feeds the formed waps in the form of a flat spiral of a variable diameter for stacking in a stack. After stacking the coil should be bound.A set of equipment is proposed to realize the applied method.This invention enables to obtain a compact coil of high-quality rod with a high efficiency of the process.
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A. A. Kugushin et al, metallurgiya, 1982, High-Grade Rolling of Rod, pp. 26-31.
Jacobson & Holman PLLC
Marcelo Emmanuel
OOO MT Group
LandOfFree
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