| 摘要 |
An automatic selection process for selecting off-size material during travel wherein first, the front end of the material is detected and a pulse count from a pulse generator is started, second, at the time of detecting the rear end of the material, the number of pulses is compared with a preset value, and third, when the compared value does not agree with the preset value, the traveling material is removed from the regular travel line. This process is very effective for rejecting off-size material in tube making, round bar making processes, etc.
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