摘要:
A method of manufacturing a reinforcement assembly for a truck bed is provided. The method includes roll-forming an aluminum sheet to form a cross-member having a base, a pair of opposing sidewalls extending from the base, and a pair of flanges each extending from one of the sidewalls and substantially parallel with the base. The method includes extruding an aluminum reinforcement member, and attaching the reinforcement member to the cross-member to space the cross-member from a frame rail of the truck.
摘要:
In a method for controlling a metallurgical production plant by means of a microstructure model, which comprises a program which calculates at least one mechanical strength property of a product being produced, which program calculates the strength property on the basis of calculated metallurgical phase components of the microstructure of the produced product, wherein the metallurgical plant comprises a terminating cooling line, and wherein operating parameters for the metallurgical plant with adjustable output values, which are established at least partially in advance, are factored into the calculation of the mechanical strength property, the object of the method is to enable an advantageous adjustment of operating parameters in order to achieve desired mechanical strength properties in a product consisting of a metal steel and/or iron alloy. This object is achieved in that, as the operating parameters that are factored into the calculation of the strength property, the mass fraction of at least one alloy element that is present in the chemical composition of the metal steel and/or iron alloy being used, and at least one additional operating parameter, preferably a cooling rate which is set as part of a cooling process carried out after a rolling process, are detected, and an increase in the strength property in question of the produced product, said increase being achieved by modifying at least said additional operating parameter, is at least partially compensated for by reducing the mass fraction of one or more of the alloying elements of the metal steel and/or iron alloy being used.
摘要:
Methods and apparatus to determine a plunge depth position of material conditioning machines are disclosed. An example method for setting a plunge depth of a leveler includes incrementally adjusting, via an actuator, a first work roll relative to a second work roll between a plurality of incremental plunge depth positions; measuring a pressure value in the actuator at the respective incremental plunge depth positions; associating the measured pressure values with the corresponding incremental plunge depth positions; detecting a smallest one of the measured pressure values; and identifying a first one of the incremental plunge depth positions corresponding to the smallest one of the measured pressure values.
摘要:
An aluminum alloy plate for a magnetic disk substrate with a flat and smooth ground surface, a production method by which the aluminum alloy plate can be produced at low cost and a magnetic disk are shown. An aluminum alloy plate for a magnetic disk substrate which comprises an aluminum alloy containing Mg: 3.0 to 8.0 mass % (hereinafter %), Cu: 0.005 to 0.150%, Zn: 0.05 to 0.60%, Cr: 0.010 to 0.300%, Fe: 0.001 to 0.030%, Si: 0.001 to 0.030%, (Ti+V+Zr): 0.0010 to 0.0100%, B: 0.0001 to 0.0010% with a balance being Al and inevitable impurities, wherein the density of a Ti—V—B—Zr-based inclusion having a maximum diameter exceeding 5 μm is 0 piece/6000 mm2 and the density of a Ti—V—B—Zr-based inclusion having a maximum diameter of 3 to 5 μm is 1 piece/6000 mm2 or less; a production method thereof; and a method for producing a magnetic disk.
摘要:
An aluminum alloy material comprises: Si: less than 0.2 mass %, Fe: 0.1 to 0.3 mass %, Cu: 1.0 to 2.5 mass %, Mn: 1.0 to 1.6 mass %, and Mg: 0.1 to 1.0 mass %, the balance being Al and incidental impurities. A number density of Al−Mn compound having a circle equivalent diameter of not less than 0.1 μm is not less than 1.0 x 105 mm−2, and a number density of Al2Cu having a circle equivalent diameter of not less than 0.1 μm is not more than 1.0×105 mm−2.
摘要:
The present invention relates to a process and to an apparatus for producing a magnesium sheet from a magnesium strip in a rolling device, said process having lower material heat losses compared to known processes and requiring a lower expenditure on apparatus. In the process, the magnesium strip, after preheating, is guided through at least one roll nip formed by at least one pair of counter-rotating working rollers, which comprise a main roller body. The process is characterized in that at least one of the two counter-rotating working rollers comprises at least one heat-insulating sheath surrounding the main roller body.
摘要:
A device for lateral guidance (1) of a metal strip (2) moving on a metal belt conveying device, including at least one base body module (7) includes an essentially vertical guiding plane (10), at least one wear body (12) having a wear surface (12a) can be rotated into several defined rotational positions in a controlled manner. The wear surface (12a) is substantially planar, and in all of its defined rotational positions, is parallel to the guiding plane (10). Further, a method for lateral guidance of metal strips (2) moving on a metal belt conveying device includes, after a first metal strip has passed through the metal belt conveying device, and prior to a second metal strip entering the metal belt conveying device, the wear body (12) is rotated from a first to a second defined rotational position in a controlled manner, wherein in all defined rotational positions, the wear surface (12a) is parallel to the guiding plane (10).
摘要:
A metal tape material contains a metal having face centered cubic lattice structure, in which metal tape material an area fraction A1 of a preferentially oriented region are within an orientation difference of 15° C. relative to a thickness direction of the metal tape material and further within an orientation difference of 15° C. relative to a first in-plane direction of the metal tape material is 60% or greater and not greater than 100%, and, where an area fraction of a preferentially oriented region are within an orientation difference of 15° relative to the thickness direction and further within an orientation difference of 15° relative to the first in-plane direction is defined as A2, the total of the area fraction of the preferentially oriented region and the area fraction of the preferentially oriented region, A1+A2, is greater than 70% and not greater than 100%.
摘要:
In a rolling train, prior to being rolled, the rolled stock, or slab, produced in an ingot casting process, has the shape of a truncated pyramid with a base area, a top area and four side areas. During a first rolling pass sequence, two opposite side areas of the rolled stock are rolled in a first direction so that all of the cross-sectional areas of the rolled stock oriented transversely with respect to the rolling direction have the same surface area when the sequence ends. The rolled stock is rotated, e.g., through 90°, and during a second rolling pass sequence, the same two opposite side areas of the rolled stock are rolled in a second direction transversely with respect to the first direction. Thus, material of the rolled stock is automatically redistributed to a desired geometry with a high degree of precision and without the use of vertical rolling stands.