Abstract: The invention relates to a cold-rolled flat steel product which, despite high strength values, has a high level of deformability characterized by a high elongation at break and a good hole expansion ratio ?M. For this purpose the flat steel product is produced from a steel that is composed of (in % by weight) C: 0.12-0.19%, Mn: 1.5-2.5%, Si: >0.60-1.0%, Al: ?0.1%, Cr: 0.2-0.6%, Ti: 0.05-0.15% with the remainder being iron and unavoidable impurities caused by the production process, and which comprises a perlite- and bainite-free structure having 4-20% by vol. martensite, 2-15% by vol. residual austenite, remainder ferrite, an elongation at break A80 of at least 15%, a tensile strength Rm of at least 880 MPa, a yield strength ReL of at least 550 MPa and a hole expansion ratio ?M of more than 6%. The invention also relates to a method which easily enables production of a flat steel product according to the invention.

Abstract: A method is disclosed of producing a corrosion resistant product from a billet comprising a core of finely divided ferrous swarf compacted into briquettes in a stainless steel jacket and in which the billet is heated to a temperature at which it becomes sufficiently plastic to be worked into a finished or semi-finished product by an operation such as rolling. An additive is pre-mixed with the swarf which, when the billet is heated, reacts to form an atmosphere inside the jecket which displaces or prevents the formation of carbon dioxide and/or other gases which at elevated temperatures would oxidise the stainless steel to form chrome oxides at the interface between the jacket and the core. The additive is preferably in powder form. Examples of suitable additives include urea and ammonium chloride.

Abstract: A process is disclosed for producing a ski edge made of quenched and subsequently tempered steel having a head (2) that comprises the running surface and a flank (4) that projects into the body of the ski. The profiled edge (1) is at first rolled, then quenched and subsequently tempered over its whole cross-section. Afterwards, the flank (4) is partially tempered and provided in a separate operation with punched out openings. In order to obtain with this process a totally straight ski edge, the deviation in Rockwell hardness, seen in the direction of the cross-section and length of the profiled edge is set at less than 2.degree. HRC during quenching and subsequent tempering of the whole profiled edge. The warming-up temperature and duration during partial warming-up of the edge are the same over the whole length of the profile edge and the profiled edge is subjected to a constant bending strain before being punched.

Abstract: A method for producing moldboard for use with plows and the like employs a process whereby the moldboards are shot peened under closely controlled conditions to form a textured, pocked contour across the working surface of the moldboard. This surface structure allows for several prior art steps to be eliminated, and also facilitates the scouring of the moldboard when it is first used thereby allowing the moldboard to scour until a working finish is established on the working surface of the moldboard.