C21D1/34

Hot-stamped body

There is provided a hot-stamped body including: a steel base metal; and a metallic layer formed on a surface of the steel base metal, wherein the metallic layer includes: an interface layer that contains, in mass %, Al: 30.0 to 36.0%, has a thickness of 100 nm to 5 μm, and is located in an interface between the metallic layer and the steel base metal; and a principal layer that includes coexisting MgZn.sub.2 phases and insular FeAl.sub.2 phases, is located on the interface layer, and has a thickness of 3 μm to 40 μm.

Method for heating a blank and heating system

A method for manufacturing a steel component from a blank is provided. Firstly, a blank is placed in a conveyor system. Then, at least a preselected zone of the blank is preheated while the blank is retained at a predetermined preheating location. Finally, the blank is conveyed through a furnace. A preheating system for heating blanks in a production line is also provided.

WORKPIECE TRANSPORT UNIT, HOT PRESSING EPUIPMENT, WORKPIECE TRANSPORT METHOD, AND HOT PRESSING METHOD
20220152685 · 2022-05-19 ·

A workpiece transport unit including a pair of arms, an opening/closing mechanism configured to open and close the pair of arms in a horizontal direction, a pair of first placement surfaces provided at the pair of arms and configured for a first workpiece to be placed thereon, and a pair of second placement surfaces provided at the pair of arms and configured for a second workpiece to be placed thereon.

Method for Producing Conventionally Hot-Rolled Profiled Strip Products
20220145414 · 2022-05-12 · ·

The invention relates to a method for producing hot-rolled hot strip products in which a steel alloy is melted; the melted steel alloy is cast into slab ingots and after being heated to a temperature above Ac.sub.3, the slab ingots are hot rolled until they reach a desired degree of deformation and a desired strip thickness; the rolling is performed above the recrystallization temperature of the alloy; after the rolling, the strip is cooled to room temperature and for hardening purposes, is briefly heated to a temperature >Ac3 and cooled again, characterized in that the heating takes place with a temperature increase of more than 5 K/s, more than 10 K/s, more than 50 K/s, or more than 100 K/s and is kept at a desired target temperature for a period of 0.5 to 60 s before cooling to yield improved mechanical properties. and then a cooling takes place;

Method for manufacturing golf putter clubhead, golf putter club head, and golf putter
11731015 · 2023-08-22 · ·

Disclosed are a method for manufacturing a golf putter clubhead, a golf putter clubhead, and a golf putter. The steps of the method for manufacturing the golf putter clubhead include: obtaining or preparing a clubhead body, where the clubhead body includes a clubface, the clubface includes a toe portion, a middle portion, and a heel portion, the toe portion and the heel portion are respectively located at two ends of the clubface, and the middle portion is located between the toe portion and the heel portion; performing stiffening treatment on the clubface; and performing softening treatment on the middle portion after the stiffening treatment. After stiffening treatment is performed on the entire clubhead body, the softening treatment is performed on the middle portion of the clubface, so that stiffness of the toe portion and the heel portion is greater than that of the middle portion of the clubface.

Method for manufacturing golf putter clubhead, golf putter club head, and golf putter
11731015 · 2023-08-22 · ·

Disclosed are a method for manufacturing a golf putter clubhead, a golf putter clubhead, and a golf putter. The steps of the method for manufacturing the golf putter clubhead include: obtaining or preparing a clubhead body, where the clubhead body includes a clubface, the clubface includes a toe portion, a middle portion, and a heel portion, the toe portion and the heel portion are respectively located at two ends of the clubface, and the middle portion is located between the toe portion and the heel portion; performing stiffening treatment on the clubface; and performing softening treatment on the middle portion after the stiffening treatment. After stiffening treatment is performed on the entire clubhead body, the softening treatment is performed on the middle portion of the clubface, so that stiffness of the toe portion and the heel portion is greater than that of the middle portion of the clubface.

Method for straightening of a FeCrAl alloy tube

The present disclosure relates to a method for straightening of a tube comprising a ferritic FeCrAl-alloy. One reason for the challenges regarding the cold working of a hollow of a ferritic FeCrAl-alloy into a finished tube is that FeCrAl-alloys have a low ductility. Even if a tube of a FeCrAl-alloy is obtained by cold working a hollow into a tube, the tube can hardly be straightened. This is even more a problem if a tube obtained is annealed, wherein the annealing leads to a deformation of tube along the longitudinal direction of the tube. Therefore, there is a need for a method for straightening of a tube comprising a ferritic FeCrAl-alloy. Thus, according to the present disclosure a method for straightening of a tube is suggested, wherein the method comprises the steps of providing a tube comprising a ferritic FeCrAl-alloy, heating the tube, and straightening and forming the heated tube by stretching.

FRICTION STIR PROCESSING FOR CORROSION RESISTANCE
20230250524 · 2023-08-10 ·

In some examples, techniques for enhancing a corrosion resistance of a component are provided. In some examples, the component includes a granular metallic material. A friction stir processing operation is performed on the material. The friction stir processing operation comprises passing a rotating head of a friction stir welding tool through a surface thickness of the granular metallic material in a treatment path.

Laser surface melting for outgassing reduction

A method for reducing outgassing from a metal surface comprises applying energy from an energy source to the metal surface sufficient to melt the metal surface; and allowing the metal surface to re-solidify, wherein the re-solidified metal surface comprises larger grains and fewer grain boundaries, reducing outgassing sites for a trapped gas. Applying energy from an energy source is performed in a raster scan pattern. Adjacent passes in the raster scan pattern overlap sufficiently to melt the entire metal surface. The energy source is a laser, such as a CW Yb fiber laser. A spot size and applied energy of the laser energy source applied to the metal surface is sufficient to melt the entire metal surface (appropriate for the absorption and reflection characteristics of the treated material). The application of energy from an energy source releases at least some of a gas trapped in the metal. The trapped gas is atomic hydrogen. The metal surface comprises an electrode of a high power system device. The metal surface is in one of a high-vacuum environment and a vacuum electronic device. The metal surface comprises at least one of steel, stainless steel, nickel, and copper.

Laser surface melting for outgassing reduction

A method for reducing outgassing from a metal surface comprises applying energy from an energy source to the metal surface sufficient to melt the metal surface; and allowing the metal surface to re-solidify, wherein the re-solidified metal surface comprises larger grains and fewer grain boundaries, reducing outgassing sites for a trapped gas. Applying energy from an energy source is performed in a raster scan pattern. Adjacent passes in the raster scan pattern overlap sufficiently to melt the entire metal surface. The energy source is a laser, such as a CW Yb fiber laser. A spot size and applied energy of the laser energy source applied to the metal surface is sufficient to melt the entire metal surface (appropriate for the absorption and reflection characteristics of the treated material). The application of energy from an energy source releases at least some of a gas trapped in the metal. The trapped gas is atomic hydrogen. The metal surface comprises an electrode of a high power system device. The metal surface is in one of a high-vacuum environment and a vacuum electronic device. The metal surface comprises at least one of steel, stainless steel, nickel, and copper.