FIELD: plastic metal working. SUBSTANCE: method lies in the fact that before the cover is applied a bush-lining made of abrasion-resistant material and having the length equal to that of the bent part of the tube and with the thickness equal to or more than that of the applied cover is introduced into the pipe and installed on the elbow. The cover is applied first on the pipe parts which are not subjected to bending. After their cooling the bush-lining is removed and the cover is applied on the liberated part of the internal surface of the pipe. Then the bending is carried out. EFFECT: facilitated manufacture.
Title | Year | Author | Number |
---|---|---|---|
METHOD OF DEPOSITION OF TWO-SIDE METAL COATS ON PIPES | 1992 |
|
RU2061086C1 |
METHOD AND APPARATUSES TO GIVE METAL COVER ON INNER AND OUTER SURFACES OF PIPES | 1991 |
|
RU2048594C1 |
METHOD OF MANUFACTURE OF PIPE WITH WEAR-RESISTANT INTERNAL COATING | 1992 |
|
RU2006519C1 |
LINE AND METHOD FOR CONTINUITY PRODUCTION OF TUBES BY ELECTRIC ARC WELDING WITH COATING BY NON-FERROUS METALS | 0 |
|
SU1715463A1 |
DEVICE FOR APPLYING GREASE LUBRICANT TO GROOVED PASS SURFACE | 1992 |
|
RU2025157C1 |
WELDING STAND OF TUBE WELDING MILL | 1992 |
|
RU2010641C1 |
METHOD OF PRODUCTION OF PIPELINE ELBOW WITH WEAR-RESISTANT INNER COATING | 0 |
|
SU811049A1 |
APPARATUS FOR DEPOSITING METAL COATINGS TO INNER AND OUTER SURFACES OF PIPES | 0 |
|
SU1638197A1 |
METHOD OF MANUFACTURE OF NON-INJURING SUTURE NEEDLES | 1991 |
|
RU2066581C1 |
PIERCING MILL MANDREL | 1992 |
|
RU2021045C1 |
Authors
Dates
1995-02-20—Published
1992-03-18—Filed