摘要:
A brazing sheet product having a core sheet (1) made of an aluminium alloy, having one or both of the surfaces of the core sheet clad with an aluminium clad layer (2), and a layer (3) comprising nickel on the outersurface of one or both the aluminium clad layer or layers (2). There is a layer (4) comprising zinc or tin as a bonding layer between the outersurface of the aluminium clad layer or layers (2) and the layer (3) comprising nickel. The aluminium clad alloy layer comprises, in weight percent: Si 2 to 18, Mg up to 8.0, Zn up to 5.0, Cu up to 5.0, Mn up to 0.30, In up to 0.30, Fe up to 0.80, Sr up to 0.20, at least one element selected from the group consisting of: Bi 0.01 to 1.0, Pb 0.01 to 1.0, Li 0.01 to 1.0, Sb 0.01 to 1.0, impurities each up to 0.05, total up to 0.20; and balance aluminium.
摘要:
A hot-dip Zn—Al—Mg plated steel sheet good in corrosion resistance and surface appearance that is a hot-dip Zn-base plated steel sheet obtained by forming on a surface of a steel sheet a hot-dip Zn—Al—Mg plating layer composed of Al: 4.0-10 wt. %, Mg: 1.0-4.0 wt. % and the balance of Zn and unavoidable impurities, the plating layer having a metallic structure including a primary crystal Al phase or a primary crystal Al phase and a Zn single phase in a matrix of Al/Zn/Zn2Mg ternary eutectic structure. To obtain a plating layer possessing this metallic structure, the cooling rate of the plating layer adhering to a steel strip extracted from a plating bath and the plating bath temperature are appropriately controlled in a continuous hot-dip plating machine and/or appropriate amounts of Ti and B are added to the bath. Occurrence of a stripe pattern peculiar to this plated steel sheet is controlled by morphology control of a Mg-containing oxide film up to solidification of the plating layer or by adding an appropriate amount of Be to the plating bath.
摘要:
A process for the production of a metal sheet having a multi-layered structure and a fine composite structure, which process comprises stacking at least two kinds of thin sheets selected from thin sheets of pure metals and thin sheets of alloys alternately so as to have multiple layers in total, integrating the stacked sheets by circumferential welding or placing the stacked sheets in a steel or stainless steel box to integrate these, and then, bonding all the layers of the integrated sheets metallically by hot rolling, and a metal sheet obtained thereby.
摘要:
Galvannealed steel sheet and method, made by applying hot-dip galvanizing to a steel sheet, heating at a heating rate of at least about 10° C./second to a maximum sheet temperature within a range of from about 470 to 550° C., and applying an alloying treatment; the Al content XAl% in the hot-dip galvannealing layer and the coating weight W g/m2 satisfy the following equation (1); thereby producing a Zn—Fe galvannealing layer having an iron content of from about 7 to 12%; the galvannealed steel sheet has intensities of &zgr;-phase, &dgr;1-phase and &Ggr;-phase that satisfy the following equations (4) and (5) as observed through X-ray diffraction with the galvannealing layer peeled off the galvannealed steel sheet at the galvannealing/steel sheet interface, and the galvannealed steel sheet having excellent press workability, having a whiteness and a glossiness within prescribed ranges: 5≦W×(XAl−0.12)≦15 (1) I(&zgr;:1.26)/I(&dgr;1:2.13)≦0.02 (4) I(&Ggr;:2.59)/I(&dgr;1:2.13)≦0.1 (5).
摘要翻译:通过对钢板进行热浸镀锌而制成的热浸镀锌钢板和方法,以至少约10℃/秒的加热速度加热到最大板温度在约470〜550℃的范围内。 ,并进行合金化处理; 热浸镀锌层中的Al含量XAl%和涂布重量W g / m2满足下式(1)。 从而制造铁含量为约7-12%的Zn-Fe合金化合金层; 合金化热镀锌钢板具有如下的等式(4)和(5)的强度:z相,δ1相和Ggr相,如通过X射线衍射所观察到的,合金化退火层从合金化热镀锌钢板上剥离 合金化退火/钢板界面以及具有优异的压制加工性的合金化热浸镀锌钢板,其白度和光泽度在规定范围内:
摘要:
A sheet metal component, obtained by press-forming a one-piece metal sheet comprised of two metal sheets into a desired shape, has an expanding portion having an external appearance varying in dependence on a weld state of a weld portion of the one-piece metal sheet at which the two metal sheets are welded at their confronting ends. In manufacturing the sheet metal component, the one-piece metal sheet is transferred between upper and lower dies of a pressing machine and is positioned such that its metal sheet section including part of the weld portion is disposed between a punch formed in the lower die and a recess formed in the upper die so as to face the punch. The metal sheet section is pressed by the punch to be subject to plastic deformation, whereby the expanding portion is formed.
摘要:
The present invention provides a support for a lithographic printing plate prepared by cold rolling a sheet while intermediate annealing is omitted to save energy and the number of the cold rolling steps are decreased to simplify the sheet production steps and to give a desired strength of the sheet, and by inhibiting precipitation of Si particles in the substrate to give extremely excellent resistance to ink staining in the nonimage areas during printing, and a process for producing a substrate therefore. The production process comprises homogenization heat-treating an aluminum alloy slab comprising 0.10 to 0.40 wt % of Fe, 0.03 to 0.15 wt % of Si, 0.004 to 0.03 wt % of Cu, and the balance of Al and unavoidable impurities, hot rolling the heat-treated slab, and cold-rolling the hot-rolled strip without intermediate annealing, the cold rolling including a final pass after which the sheet temperature becomes at least the recovery temperature of the sheet and the following rapid cooling, whereby an aluminum alloy substrate for a lithographic printing plate having a content of precipitated Si of up to 30 ppm and a tensile strength of from 145 to 180 MPa is produced. When the aluminum alloy is electrolytically grained and anodically oxidized, the resultant anodic oxide film can contain up to 200/mm2 of precipitated Si particles having an average particle size of at least 0.5 &mgr;m.
摘要:
Using a chrome plating bath containing organic sulfonic acid, plating is conducted by application of a pulse current to thereby form a crack-free lower chrome layer on a steel substrate. The lower chrome layer has a compressive residual stress of 100 MPa or more and a crystal grain size of from 9 nm to less than 16 nm. Subsequently, by application of a direct current, a cracked upper chrome layer is formed on the lower chrome layer, to thereby obtain a chrome plated part. The lower chrome layer imparts the chrome plated part with heat resistance and corrosion resistance, and the upper chrome layer imparts the chrome plated part with wear resistance and good sliding properties.
摘要:
A multi-element composite object composed from first, second, and third metal components is provided, wherein the first metal and the third metal are weld incompatible. The multi-element composite object includes a first component fabricated from a first metal. A second component, fabricated from a second metal, is brazed to the first component A third component, fabricated from a third metal, is inertia welded to the second component . The first metal may be provided as a titanium alloy, e.g. a TiNi alloy. The second metal may be provided as low-carbon mild or alloy steel. The third metal may be provided as alloy steel, e.g., 9310 nickel alloy steel. In an embodiment, the multi-element composite object is a gear assembly, with the first element of the gear assembly object being a shaft and the third element of the gear assembly being a gear member with hardened teeth surfaces. The first and second components can be mechanically keyed together via an anti-rotational element. The anti-rotational element can be provided as a pin-in-groove arrangement or a twist-fit arrangement A method of making a multi-metal composite object including a first component fabricated from a first metal, a second component fabricated from a second metal, and a third component fabricated from a third metal, wherein the first metal and the third metal are weld incompatible, is also disclosed. The first step of the method includes mechanically keying the first component to the second component. Net, the first component is brazed to the second component. Finally, the third component is welded to the second component. Where the first metal is a Ti alloy and the second metal is low-carbon steel, the step of brazing the first component to the second component can include brazing using a brazing material such as Ag and Cu. Where the third component is heat-treated steel, the assembly can be stress-relieved after inertia welding at a temperature sufficiently low so as not to degrade the heat-treated properties of the third component.
摘要:
A spin-valve film which enables a high output to be obtained and thermal stability to be improved without a necessity of reducing the thickness of films which constitute the spin-valve film, a spin valve type magnetoresistance-effect device and a magnetic head comprising the spin valve type magnetoresistance-effect device. A spin-valve film according to the present invention comprises a fixed layer in which a direction of magnetization is to be directed to substantially a predetermined direction; a non-magnetic layer; and a free layer in which a direction of magnetization is to be changed by an external magnetic field, wherein the free layer comprises at least a laminate film having a Ta film and a NiFeTa film.
摘要:
A magnetic recording medium capable of reducing noise and an error rate of the medium comprises a nonmagnetic substrate; a magnetic layer formed on the surface of the nonmagnetic substrate directly or through a nonmagnetic underlayer; and a protective layer formed on the magnetic layer. The magnetic recording medium satisfies the following relationships: −0.5≦{Hc(1)−Hc(p)}/Hc(1)≦0.3 Hc(1)≧2 kOe 20 G×&mgr;m≦Br(1)×t≦100 G×&mgr;m where Hc(1) is a corecivity of the magnetic layer measured in the longitudinal direction; Hc(p) is a coercivity of the magnetic layer measured in the perpendicular direction; Br(1) is a remanent magnetization of the magnetic layer measured in the longitudinal direction; and “t” is a layer thickness of the magnetic layer.