FIELD: metallurgy.
SUBSTANCE: method includes manufacture of a tubular blank with nominal outer diameter equal to outer diameter of tee-piece, and length greater than length of the tee-piece, ovalisation of the blank with subsequent longitudinal squeezing, heating the blank to 800÷1000°C, transverse squeezing with preliminary forming of branch without disturbance of continuity of the blank surface, cutting a hole in preliminarily formed branch, repeated heating of blank to temperature of 800÷1000°C and final transverse squeezing with simultaneous flanging of the branch by a punch at the temperature not below than 700°C. Branch flanging can be performed by the puncheon installed on the supporting surface. The version of the method provides for manufacture of cylindrical shell by bending a blank of rectangular shape and making longitudinal weld joint.
EFFECT: obtaining uniform thickness over the whole perimeter of the branch of the tee-piece, maximum height of the branch, increase of productivity and reduction of power consumption.
7 cl, 6 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF T-JOINT MANUFACTURING | 2018 |
|
RU2696120C1 |
| METHOD OF MAKING TEES (VERSIONS) | 2012 |
|
RU2492952C1 |
| METHOD OF MANUFACTURING TEES | 2020 |
|
RU2745218C1 |
| METHOD OF T-JOINTS PRODUCTION FROM TUBULAR BILLETS | 2006 |
|
RU2333064C2 |
| METHOD OF MANUFACTURING TEE-JOINT FROM TUBE BILLETS | 0 |
|
SU1082513A1 |
| METHOD OF PRODUCING T-BRANCHES FROM TUBE BLANKS | 0 |
|
SU795610A1 |
| METHOD OF PRODUCING TEE-JOINTS FROM SHEET BLANKS | 0 |
|
SU1175585A1 |
| METHOD OF DIELESS HOT FORMING OF OIL-GAS-WATER SUPPLY STEEL TEE PIPES AND SYSTEM TO THIS END | 2010 |
|
RU2410180C1 |
| PUNCH FOR FLANGING BRANCH IN TUBE BLANK WALL (VERSIONS) | 2016 |
|
RU2632309C1 |
| DIE FOR PRODUCING TEE-JOINTS FROM TUBE BILLETS | 0 |
|
SU1076163A1 |
