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ROTARY STRAIGHTENING ManTech 6
Straightening   <ul><li>(1)  A process performed on rolled stock, wire, long forgings, stampings, castings, and machined p...
ROTARY STRAIGHTENING <ul><li>Straightening and planishing a round bar by feeding it between contoured steel rolls </li></u...
Rotary straightening of curved shape  near both ends of seamless pipe <ul><ul><li>A new straightening method is proposed f...
ROTARY STRAIGHTENING <ul><ul><li>roller </li></ul></ul>
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Rotary straightening

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Rotary straightening

  1. 1. ROTARY STRAIGHTENING ManTech 6
  2. 2. Straightening   <ul><li>(1)  A process performed on rolled stock, wire, long forgings, stampings, castings, and machined parts to eliminate distortions and warpage that occur as a result of imperfections in manufacturing methods, operational overloads, or other factors. Straightening is usually done on cold stock by means of plastic deformation. </li></ul><ul><li>(2)  In railroading, the aligning of track that has been displaced to either one or the other side by the action of rolling stock upon both rails of the track. The aligning is necessary to provide smooth travel for trains. </li></ul>
  3. 3. ROTARY STRAIGHTENING <ul><li>Straightening and planishing a round bar by feeding it between contoured steel rolls </li></ul><ul><li>Planish </li></ul><ul><li>  </li></ul><ul><li>(Engineering / Metallurgy)  (tr)  to give a final finish to (metal) by hammering or rolling to produce a smooth surface </li></ul>
  4. 4. Rotary straightening of curved shape near both ends of seamless pipe <ul><ul><li>A new straightening method is proposed for the curved shape near both ends of seamless pipe by using a rotary forming process with three rollers. A helical rolling mill with three rollers was used in the experiment. The prebend aluminum seamless pipes were straightened under various working conditions. It was found that the pitch and the nominal reduction in radius can determine an attainable straightening ratio of the product, and there exists a minimum length of rollers to guarantee the selected straightening ratio of the product. The curved shape of pipe specimen can be straightened up to 90% under optimum working conditions. It was also found that there exists a maximum pitch to guarantee a certain straitening ratio of the product, and the axial feed rate can be selected arbitrarily in practice. </li></ul></ul>
  5. 5. ROTARY STRAIGHTENING <ul><ul><li>roller </li></ul></ul>

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