| 摘要 |
FIELD: process engineering. ^ SUBSTANCE: invention relates to metal forming and may be used in aircraft and rocket engineering for making high-strength shells connected by lengthwise and transverse ribs. Hollow cylindrical billet is fitted on grooved mandrel against the stop, said mandrel being fitted on rod to displace unobstructed thereon, and formed by rolls to squeeze pattern. After forming first bulge, said mandrel is displaced synchronously with rolled billet. ^ EFFECT: higher precision of finished articles. ^ 4 dwg |
