steel (Total 242615 Patents Found)

A method of manufacturing a cold rolled steel sheet includes the steps of preparing, as a material, a steel whose composition consists of C: 0.004 wt % or less, Si: 0.10 wt % or less, Mn: 0.50 wt % or less, Ti: between 0.01 wt % and 0.10 wt %, Nb: between 0.003 wt % and 0.03 wt %, B: between 0.001 wt % and 0.004 wt %, ...
High strength martensitic stainless steel having high rusting resistance which comprises, by weight, 0.13 to 0.20% of C, 0.5 or less of Si, 2.0% or less of Mn, 1.0 to 2.5% of Ni, 12.0 to 16.0% of Cr, 1.3 to 3.5% of Mo, 0.06 to 0.13% of N, if necessary, 0.001 to 0.010% of B, or 0.05 to 1.0% of Ti, 0.05 to 1.0% of Nb, wh...
Articles are made by plastically deforming hardened steel sheet stock having relatively deep ferrite outer surface zones and a through hardened central core with an abrupt transition between the ferrite surface zones and the central core. Plastically deformed steel articles such as steel rule dies and automobile door g...
A film treating agent for a non-oriented electrical steel sheet having excellent film characteristics such as high space factor, punchability, weldability, and adhesion, and having excellent lubricating properties after stress relief annealing agent comprises, as principal components thereof, 100 parts by weight, calcu...
The invention relates to a method for bonding an aluminum rib to a steel pipe, a surface coating material of the steel pipe being used as the bonding material, so that supplying a separate soldering material, for example, may be dispensed with. The invention additionally relates to a heat exchanger which comprises a un...
A high tensile strength hot-rolled steel sheet having superior strain aging hardenability, which has high formability and stable quality characteristics, and in which satisfactory strength is obtained when the steel sheet is formed into automotive components, thus enabling the reduction in weight of automobile bodies. ...
A high-strength galvanized steel sheet includes a base steel sheet having a specific chemical composition and a zinc coating layer disposed on the surface of the base steel sheet in a coating weight per side of 20 g/m 2 to 120 g/m 2 , wherein the amount of hydrogen measured by a specific method is 0.05 mass ppm to 0.4...
The present disclosure relates to a hot-forming apparatus for producing a press-hardened shaped component from a blank, with a furnace for heating the blank and a pressing device for forming and cooling the blank heated in the furnace, wherein the hot-forming apparatus has, arranged upstream of the furnace, a preheatin...
A rolled steel bar or a wire rod for hot forging capable of coping with both bending/surface fatigue strength of components and machinability at a high level includes: a composition containing, in mass %, C: 0.1 to 0.25%, Si: 0.01 to 0.10%, Mn: 0.4 to 1.0%, S: 0.003 to 0.05%, Cr: 1.60 to 2.00%, Mo: 0.10% or less (inclu...
In a hot-rolled steel sheet, an average pole density of an orientation group {100}<011> to {223}<110>, which is represented by an arithmetic mean of pole densities of orientations {100}<011>, {116}<110>, {114}<110>, {112}<110>, and {223}<110> is 1.0 to 4.0 and a pole density of...
Apparatus for forming seam welded stainless steel tube including a skelp forming mill, dies for forming the skelp into a tube-like configuration defining a welding vee between advancing edges of the skelp, an induction heater for producing current flow along the edges of the skelp and around the vee to heat portions of...
The invention relates to an inorganic aqueous surface treatment agent for a single-face electrogalvanized, chromium free surface treated steel plate, a single-face electrogalvanized, chromium-free surface treated steel plate used for fuel tanks and a process of making the same. The inorganic aqueous surface treatment a...
Provided is an apparatus for forming steel workpieces using electroplasticity. The apparatus comprises a power supply ( 40 ) for supplying electricity to the workpiece (W) through electrodes ( 30 ) disposed in a mold ( 20 ) of a press ( 10 ) during a deformation stroke of the press ( 10 ), a control unit ( 50 ) for con...
A method for bonding stainless steel members includes: contacting a first stainless steel member with a second stainless steel member that has a strain exceeding 50% reduction; and heating the first and second stainless steel members to a re-crystallization initiation temperature or higher, after the contacting....
An aspect of the present disclosure is to precisely define a constant value used in the Monkman-Grant analysis, when estimating remaining life of a high-chromium steel pipe through which high-temperature and high-pressure fluid is allowed to flow. A remaining life estimation method according to the present disclosure i...
A system including a movable lance ( 1 ), which measures or influences physical or chemical quantities of a melt ( 2 ) in a converter ( 3 ), and a device for contactless position measurement of the movable lance ( 1 ). Also, a converter system including such a system and a method for the contactless position measuremen...