ATTACHMENT FOR SURFACING INNER SURFACE OF SMALL-DIAMETER OPENINGS Russian patent published in 2005 - IPC

FIELD: welding, namely apparatuses for surfacing inner cylindrical surfaces, possibly electric-arc corrosion protection flux surfacing.

SUBSTANCE: apparatus for belt type surfacing of cylindrical surfaces of small-diameter openings is in the form of surfacing attachment and it includes guiding duct for passing welding material. At outlet of said duct there is electric current supply mouthpiece with pressing device. Guiding duct is rectangular one, it has shaped working surface. Contact surface of belt and pressing device is arranged over level of contact surface of belt and current-supply mouthpiece without their direct contact. Width of working surface of electric current supply mouthpiece and pressing device is less than that of fed belt. Pressing device is in the form of pressing roller or pressing plate whose working surface is rounded.

EFFECT: enhanced efficiency of surfacing, enlarged manufacturing possibilities of surfacing head, improved stability of belt feed, enhanced quality of surfaced coating due to optimization of constructional members of attachment.

3 cl, 3 dwg