FIELD: process engineering.
SUBSTANCE: invention relates to metal forming and can be used in production of downhole rod pump cylinders. Pipe semis are produced by hot forging at fixed forging mandrel with conical working surface. Locating shank is used for fixing forging mandrel in channel of as-forged part. After channel boring cold radial forging with channel surface broaching is carried out with the help of extra mandrel. Hot and cold forging are performed by hammers at radial forging machine. After every reduction in said hot and cold processes hollow billet and half-blank are fed and edged. Liquid process lubricant is fed in billet deformation area, forged part centering area and broaching area. Feed is performed via radial channels in forging mandrel and centering shank. Start of edging is set to hollow billet and pipe half-blank angle not earlier that the feed start.
EFFECT: accurate sizes, higher surface quality, reliable operation of the machine.
10 cl, 2 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD AND RADIALLY FORGING MACHINE FOR PRODUCTION OF PRECISION PIPES | 1995 |
|
RU2070464C1 |
| METHOD OF FORGING HOLLOW PARTS AND FORGING COMPLEX TO THIS END | 2011 |
|
RU2486985C2 |
| METHOD FOR MAKING PRESION ELONGATED CYLINDRICAL PRODUCTS, MAINLY BIMETALLIC ONES AND TOOL FOR PERFORMING THE SAME | 2003 |
|
RU2248260C1 |
| METHOD OF PRODUCING FORGINGS | 2011 |
|
RU2457061C1 |
| PRODUCTION OF THIN-WALL PIPES OF HIGHER PRECISION FROM ALLOYED COPPER-BASED STRAIN-HARDENED ALLOYS | 2012 |
|
RU2539799C2 |
| METHOD OFF MAKING HOLLOW CYLINDRICAL BLANKS | 1990 |
|
RU2083310C1 |
| BILLET FORGING METHOD IN FOUR-STRIKER FORGING APPARATUS | 2004 |
|
RU2283714C2 |
| METHOD OF MANUFACTURING THICK-WALLED PIPES AND DEVICE FOR ITS REALIZATION | 1992 |
|
RU2010655C1 |
| METHOD OF RADIAL FORGING | 0 |
|
SU1637926A1 |
| FOUR-HEAD FORGING DEVICE FOR FORGING PRESS | 2011 |
|
RU2454292C1 |
