Abstract:
High strength steel wire for spring containing, by mass %, C: 0.67% to less than 0.75%, Si: 2.0 to 2.5%, Mn: 0.5 to 1.2%, Cr: 0.8 to 1.3%, V: 0.03 to 0.20%, Mo: 0.05 to 0.25%, W: 0.05 to 0.30%, and N: 0.003 to 0.007%, having a total of contents of Mn and V of 0.70%≦Mn+V≦1.27% and a total of contents of Mo and W of 0.13%≦Mo+W≦0.35%, limiting P: 0.025% or less, S: 0.025% or less, and Al: 0.003% or less, and having a balance of iron and unavoidable impurities, having a microstructure comprised of, by volume percent, over 6% to 15% of retained austenite and tempered martensite, having a prior-austenite grain size number of 10 or more, having a density of presence of spheroidal carbides with a circle equivalent diameter of 0.2 to 0.5 μm of 0.06 particles/μm2 or less, having a density of presence of spheroidal carbides with a circle equivalent diameter of over 0.5 μm of 0.01 particles/μm2 or less, and having a tensile strength of 2100 to 2350 MPa.
Abstract:
There is provided a surface treatment method of metal that can endow the surface of a metallic material with strong bonding force in a simple process regardless of the profile and the substance of the metallic material as well as a metallic material obtained by such a method. The method comprises a first step of conducting a chemical etching process accompanied by formation of a film coat on the metal surface and a second step of chemically removing the film coat formed on the metal surface in the first step. If necessary, it may further comprise a third step of forming a thin layer on the metal surface after the second step.
Abstract:
A glass panel has a transparent or semitransparent colored film in which fine particles of gold having an average diameter of 10 nm or less are dispersed, the colored film being formed partly or wholly on a surface of a glass panel. The colored film is produced by coating a paste containing a composite material with the fine particles of gold dispersed in a polymeric material, preferably a paste containing a material for suppressing growth of fine particles of gold, on the surface of the glass panel, and heating the glass panel to bake a colored film with the fine particles of gold dispersed therein to the glass panel.
Abstract:
A hydrolyzate resulting from co-hydrolysis of a perfluoroalkyl group-containing organic silicon compound and a hydrolyzable group-containing methylpolysiloxane compound in a hydrophilic solvent is blended with an organopolysiloxane and a strong acid to constitute a water repellent composition which is effective for imparting water repellency and facilitating falling of water droplets and thus imparting excellent water repellency and stain-proofness to a surface of an article treated therewith.
Abstract:
An electrically conductive glass sheet used as a fog-resistant automotive window glass sheet. The electrically conductive glass sheet comprises a glass sheet, a pair of busbars, an electrically conductive thin film, and protective coatings. The busbars are formed in spaced relation on the surface of the glass sheet by baking electrically conductive paste printed on the surface of the glass sheet. The electrically conductive thin film formed on the surface of the glass sheet has ends or junctions connected to the busbars in overlapping relation to the surfaces of the busbars, the junctions being covered with the protective coatings. Since the junctions are covered with the protective coatings, good electric conductivity through the junctions is ensured for increased fog resistance, and variations from glass sheet to glass sheet are reduced.
Abstract:
A bed device has a load measurement unit for generating a load signal; a first computation unit for computing a center-of-gravity variation or load variation on the basis of the load signal; a first determination unit for determining whether the computation result for the center-of-gravity variation or load variation is equal to or greater than a first threshold value; a totaling unit for totaling the number of times that the computation result is determined to be equal to or greater than the first threshold value; a second computation unit for multiplying the totaling results by coefficients for each time period and adding the results; and a second determination unit or determining a waking or sleeping state or determining a body movement or rest state of a user on the basis of whether a computation result of the second computation unit is equal to or greater than a second threshold value.
Abstract:
High strength steel wire for spring containing, by mass %, C: 0.67% to less than 0.75%, Si: 2.0 to 2.5%, Mn: 0.5 to 1.2%, Cr: 0.8 to 1.3%, V: 0.03 to 0.20%, Mo: 0.05 to 0.25%, W: 0.05 to 0.30%, and N: 0.003 to 0.007%, having a total of contents of Mn and V of 0.70%≦Mn+V≦1.27% and a total of contents of Mo and W of 0.13%≦Mo+W≦0.35%, limiting P: 0.025% or less, S: 0.025% or less, and Al: 0.003% or less, and having a balance of iron and unavoidable impurities, having a microstructure comprised of, by volume percent, over 6% to 15% of retained austenite and tempered martensite, having a prior-austenite grain size number of 10 or more, having a density of presence of spheroidal carbides with a circle equivalent diameter of 0.2 to 0.5 μm of 0.06 particles/μm2 or less, having a density of presence of spheroidal carbides with a circle equivalent diameter of over 0.5 μm of 0.01 particles/μm2 or less, and having a tensile strength of 2100 to 2350 MPa.
Abstract:
Electrolysis using a suitable electrolyte provides a completely nonsludging zinc phosphate conversion coating process that produces a high quality conversion coating in a very short time. The suitable electrolyte contains at least water, dissolved nitric acid, and dissolved zinc cations and optionally also contains m chemically distinct species of cations other than zinc and n chemically distinct species of anions other than anions derivable by ionization of phosphoric and nitric acids, each of m and n independently being zero or a positive integer. Preferably, the liquid composition contains as additive at least one selection from nitrous acid, permanganic acid, peroxysulfuric acid, hydrogen peroxide, chloric acid, perchloric acid, nitrobenzenesulfonic acid, hydroxylamine, starch/phosphoric acid esters, fluorine compounds, and salts of the preceding; and/or the metal substrate is subjected to cathodic electrolysis after the workpiece has been brought into contact with a weakly basic aqueous colloidal solution that contains titanium oxide, titanium hydroxide, and zinc phosphate.
Abstract:
Heat-screening glass comprising a transparent glass substrate having consecutively thereon a heat-screening film, a first transparent protective film, and a second transparent protective film, the first transparent protective film comprising at least one member selected from the group consisting of silicon nitride, silicon dioxide, stannic oxide, oxynitride of silicon carbide, and oxynitride of tantalum carbide, and the second transparent protective film comprising at least one member selected from the group consisting of zirconium oxide, tantalum pentoxide, niobium oxide, zirconium oxynitride, tantalum oxynitride, and niobium oxynitride, and having a thickness of from 2 to 15 nm.
Abstract:
The present invention provides a heat-screening glass provided with a protective film having improved wear resistance and chemical resistance in comparison with a protective film of silicon dioxide. A heat-screening glass according to the present invention is composed of a transparent sheet glass and a heat-screening film coated thereon and a protective film made of silicon oxynitride as an outermost layer. The protective film is made of silicon oxynitride represented by the formula SiO.sub.x N.sub.y (where x ranges from 0.65 to 1.25 and y ranges from 0.05 to 0.67) .
Abstract translation:本发明提供一种具有与二氧化硅保护膜相比具有改善的耐磨性和耐化学性的保护膜的热屏玻璃。 本发明的隔热玻璃由透明的玻璃板和其上涂覆的热筛膜和由氮氧化硅制成的最外层的保护膜构成。 保护膜由式SiO x N y(x为0.65〜1.25,y为0.05〜0.67)表示的氧氮化硅制成。