Massive Clamping Force Hits Hot Steel - Video

Most assume a stepped shaft requires carving on a lathe, which leaves piles of shavings behind. Instead, this cross wedge rolling process heats the billet until it becomes malleable. As the massive grooved rollers rotate, wedge-shaped dies squeeze the metal inward and force it to flow outward along the axis. No material gets cut away. Do parts like this always need secondary finishing?

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