1
Robert A Pirlet: Determining the profile of a surface of an object. Centre de Recherches Metallurgiques Centrum voor Research in de Metallurgie, Holman & Stern, October 23, 1979: US04171917 (37 worldwide citation)

The profile of a surface of an object is determined by scanning the line of intersection of this surface and a given plane transverse to the object. A radiation transmitter provides a transmitting beam, and a radiation receiver provides a receiving beam. Deflection means causes scanning movement of ...


2
Jacques Defourny: Electrode displacement monitoring in resistance welding. Centre de Recherches Metallurgiques Centrum voor Research in de Metallurgie, Holman & Stern, October 20, 1981: US04296304 (26 worldwide citation)

One or two sensors are used to measure the displacement of a pair of electrodes relative to each other during resistance welding. The axis of the or each sensor is parallel to and as close as possible to the common alignment axis of the electrodes.


3
Jean Crahay: Method and apparatus for forming microcavities on the surface of a rolling mill roll. Centre de Recherches Metallurgiques Centrum voor Research in de Metallurgie, Holman & Stern, March 30, 1982: US04322600 (25 worldwide citation)

A continuous beam from a laser is divided into two intermittent beams by a reflecting disc with peripheral holes, rotating about an axis skew to the continuous beam. At least one of the intermittent beams is transmitted to a marking head having a lens which focuses the beam onto the surface of a rol ...


4
Mario Economopoulos, Yves Jean Respen: Producing rolled steel products. Centre de Recherches Metallurgiques Centrum voor Research in de Metallurgie, Holman & Stern, April 5, 1977: US04016009 (24 worldwide citation)

In the rolling mill the temperature of the product is reduced to between Ac.sub.3 and Ac.sub.3 + 150.degree. C before it enters the finishing stands. The product emerging from the finishing stands is quenched to provide a surface layer of martensite and/or bainite. Subsequently the heat of the core ...


5
Robert A Pirlet: Apparatus for monitoring the surface of the charge of a shaft furnace. Centre de recherches Metallurgiques Centrum voor Research in de metallurgie, Holman & Stern, March 30, 1982: US04322627 (19 worldwide citation)

A telemetric optical-radiation laser transmitter 5 outside an aperture 2 sends a beam to a point 14 scanned over the charge surface 1, via a rotating assembly 7 of deflectors, one deflector 11 oscillating with a periodicity related to the rotation of the assembly. A telemetric receiver 19, sensitive ...


6
Marios Economopoulos: Heat-treating tubular steel sections. Centre de Recherches Metallurgiques Centrum voor Research in de Metallurgie, Holman & Stern, May 27, 1980: US04204892 (16 worldwide citation)

A tubular steel section at a temperature, above Ac.sub.1, at which the steel contains at most 15% ferrite is subjected to martensitic and/or bainitic quenching followed by still air cooling. The effects of quenching are limited to a surface layer, internal and/or external, of the section. At the end ...


7
Jacques Halleux: Surface treatment of a rolling mill roll. Centre De Recherches Metallurgiques centrum Voor Research in de Metallurgie, Fleit Jacobson Cohn Price Holman & Stern, July 11, 1989: US04847112 (15 worldwide citation)

A process for surface treatment of a rolling mill roll coated with a coating of metal wherein the coated roll is surface heated, e.g. by a continuous laser beam in a helical path to melt the coating and a thin superficial layer of the roll thereby forming an uninterrupted molten alloy layer comprisi ...


8
Christian Josis, Andre Hans: Waste water purification processes. Centre de Recherches Metallurgiques Centrum voor Research in de Metallurgie, Siderurgiemaritime Maritime Staalnijverheid, Holman & Stern, July 10, 1979: US04160725 (15 worldwide citation)

Waste water from coke ovens is purified by passing the waste water and a stripping fluid through a stripping column in counterflow. Non-volatile ammonium compounds are removed in one region of the column, phenolic compounds are removed in another region, and volatile ammonium compounds are removed i ...


9
Robert A Pirlet: Process for determining a dimension of an object. Centre de Recherches Metallurgiques Centrum voor Research in de Metallurgie, Holman & Stern, October 14, 1980: US04227813 (15 worldwide citation)

To determine a dimension of an object, two emitted beams whose axes define a known angle are directed by means of a deflector onto points of the object related to the dimension to be determined so that when one beam falls on the first of two points defining the dimension the other beam falls on the ...


10
Guy A Monfort, Adolphe A Bragard: Continuous measurement of the surface roughness of a cold-rolled product. Centre de Recherches Metallurgiques Centrum Voor Research in De Metallurgie, Holman & Stern, February 7, 1989: US04803374 (14 worldwide citation)

A light beam, e.g. from a laser, is transmitted onto the surface of a cold-rolled product such as steel strip. The light beam has a wavelength at least equal to the maximum roughness of the product surface. The reflected light energy is measured, preferably in the specular direction with respect to ...