X-RAY DEVICE FOR MONITORING THICKNESS AND CHEMICAL COMPOSITION OF ROLLED STOCK MATERIAL Russian patent published in 2007 - IPC G01B15/02 G01N23/16 

FIELD: technology for controlling thickness and chemical composition of rolled stock material.

SUBSTANCE: in accordance to invention, first camera faces the strip being controlled with section, transforming element of which is made of material with lesser atomic number, than another section of this chamber, while second chamber faces the strip with section, transforming element of which is made of material with lesser atomic number, than another section of second chamber, first chamber being made in form of solid disk, second chamber - in form of hollow disk, for example, washer, chambers being positioned coaxially and combined with their upper surfaces, facing the emitter, and lower surfaces, facing the strip, in common planes, while x-ray protective screen is made in form of cover, applied onto internal generating surface of second chamber and onto its upper end surface and, also, chambers are positioned relatively to emitter and surface of strip being controlled, in such a way, that energy potential of reflected x-ray stream is used maximally.

EFFECT: increased trustworthiness and sensitivity when controlling chemical composition of rolled stock materials due to maximal usage of energy potential of reflected x-ray stream in rolled stock strip being controlled, in other words, in usage of all energy of x-ray radiation streams.

2 cl, 4 dwg