| 摘要 |
FIELD: construction. ^ SUBSTANCE: method for production of pipe with coating with a exfoliated protective layer, in which internal central pipe is made by means of extrusion and calibration, then surface of central pipe is heated prior to application of protective coating layer in process of passing through nozzle for application of coatings with further cooling of coating layer before finished pipe exits the process. The novelty is the fact that extent of adhesion between central pipe and coating layer is controlled with the help of fast and efficient heating of central pipe surface to a previously specified temperature and by control of welding time and stretching of coating layer applied onto central pipe, by means of controlled level of vacuum in nozzle for application of coatings, which provide for application of coating layer onto surface of central pipe at the largest angle. ^ EFFECT: provision of even adhesion between central pipe and protective layer in pipe with coating of both abovementioned types. ^ 10 cl, 2 dwg |
