| abstract |
METHOD OF LONG-TERM ROLLING OF A PIPE, which causes deformation of a heated sleeve with rolls on a mandrel and supplying water to the inner surface of the sleeve during rolling through a mandrel, characterized in that, in order to increase the service life of the mandrel, before deformation, a solid lubricant will be covered with a heated sleeve, before the deformation, and the melted material 1-2.5 seconds until softened. C / S |