METHOD OF ASSEMBLY AND MILL FOR ASSEMBLY OF I-BEAM BY WELDING Russian patent published in 2013 - IPC B23K37/04 B23K31/02 B23K101/28 

FIELD: process engineering.

SUBSTANCE: invention relates to method and mill for production of welded I-beam. Proposed method allows the welding of four-flange seams by argon arc in one pass. Proposed mill comprises bed 1, hydraulically driven rolls 2 with reversible electric drive for setting and centring of beam wall and fitting the beam to welding start position, clamping rolls 3 to centre top flange relative to beam wall, welding heads 5, main hydraulic clamp 6 with roller, bridge 7, supports 8, 10 with hydraulic drives to mounting welding heads, inlet roll table 9, electrically driven propulsor 11 composed of pull roller with drive motor 12. Governor 14 is connected in main motor circuit to control pull roller shaft rpm, that is, the welding rate.

EFFECT: higher quality, longer life of beam drive, expanded range of products.

6 cl, 4 dwg