摘要:
A hot-dip galvanized steel sheet includes a plating layer substantially composed of the η phase and an oxide layer disposed on a surface of the plating layer. The oxide layer has an average thickness of 10 nm or more and includes a Zn-based oxide layer and an Al-based oxide layer. A method for producing the hot-dip galvanized steel sheet includes a hot-dip galvanization step, a temper rolling step, and an oxidation step.
摘要:
A hot-dip galvanized steel sheet includes a plating layer substantially composed of the η phase and an oxide layer disposed on a surface of the plating layer. The oxide layer has an average thickness of 10 nm or more and includes a Zn-based oxide layer and an Al-based oxide layer. A method for producing the hot-dip galvanized steel sheet includes a hot-dip galvanization step, a temper rolling step, and an oxidation step.
摘要:
The method for manufacturing galvanized steel sheet has a step of adjusting the surface texture thereof by blasting solid particles against the surface thereof. The surface texture is defined by at least one parameter selected from the group of parameters consisting of mean roughness Ra on the surface of steel sheet, peak count PPI on the surface of steel sheet, and filtered centerline waviness Wca on the surface of steel sheet. The galvanized steel sheet has a surface in dimple-pattern texture.
摘要:
An aqueous surface-treatment liquid is a treatment liquid containing a water-soluble zirconium compound, water-dispersive particulate silica, a silane coupling agent, a vanadic acid compound, a phosphoric acid compound, a nickel compound, and an acrylic resin emulsion in particular proportions. A surface-treated galvanized steel sheet produced using the treatment liquid is a galvanized steel sheet having a surface-treatment coating on a surface thereof, and the coating contains a zirconium compound, particulate silica, a silane-coupling-agent-derived component, a vanadic acid compound, a phosphoric acid compound, a nickel compound, and an acrylic resin in particular proportions. The amount of coating on a zirconium basis is 10 to 200 mg/m2. This surface-treated galvanized steel sheet is chromate-free and has superior flat-portion corrosion resistance, blackening resistance, and appearance and corrosion resistance after press forming.
摘要翻译:水性表面处理液是特别是含有水溶性锆化合物,水分散性微粒二氧化硅,硅烷偶联剂,钒酸化合物,磷酸化合物,镍化合物,丙烯酸树脂乳液的处理液 比例。 使用处理液制造的表面处理镀锌钢板是其表面具有表面处理涂层的镀锌钢板,该涂层含有锆化合物,颗粒状二氧化硅,硅烷偶联剂衍生成分, 钒酸化合物,磷酸化合物,镍化合物和丙烯酸树脂。 锆的涂布量为10〜200mg / m 2。 这种经表面处理的镀锌钢板是无铬酸盐的,并且具有优异的平坦部分耐腐蚀性,耐黑变性,以及压制成型后的外观和耐腐蚀性。
摘要:
An aqueous surface-treatment liquid is a treatment liquid containing a water-soluble zirconium compound, water-dispersive particulate silica, a silane coupling agent, a vanadic acid compound, a phosphoric acid compound, a nickel compound, and an acrylic resin emulsion in particular proportions. A surface-treated galvanized steel sheet produced using the treatment liquid is a galvanized steel sheet having a surface-treatment coating on a surface thereof, and the coating contains a zirconium compound, particulate silica, a silane-coupling-agent-derived component, a vanadic acid compound, a phosphoric acid compound, a nickel compound, and an acrylic resin in particular proportions. The amount of coating on a zirconium basis is 10 to 200 mg/m2. This surface-treated galvanized steel sheet is chromate-free and has superior flat-portion corrosion resistance, blackening resistance, and appearance and corrosion resistance after press forming.
摘要翻译:水性表面处理液是特别是含有水溶性锆化合物,水分散性微粒二氧化硅,硅烷偶联剂,钒酸化合物,磷酸化合物,镍化合物,丙烯酸树脂乳液的处理液 比例。 使用处理液制造的表面处理镀锌钢板是其表面具有表面处理涂层的镀锌钢板,该涂层含有锆化合物,颗粒状二氧化硅,硅烷偶联剂衍生成分, 钒酸化合物,磷酸化合物,镍化合物和丙烯酸树脂。 锆的涂布量为10〜200mg / m 2。 这种经表面处理的镀锌钢板是无铬酸盐的,并且具有优异的平坦部分耐腐蚀性,耐黑变性,以及压制成型后的外观和耐腐蚀性。
摘要:
A mobile body corrosion measuring apparatus having a corrosion sensor installed in at least one portion of a mobile body, the corrosion sensor measuring a corrosion state at the portion and outputting corrosion data; a vehicle (mobile body) running speed sensor installed in the mobile body, the running speed sensor measuring a running speed of the mobile body and outputting the running speed data; and a data collection unit that acquires the corrosion data from the corrosion sensor and the running speed data from the vehicle speed sensor at the same time and collects the corrosion data and the running speed data with the corrosion data and the running speed data associated with each other. Due to above structure, a corrosion state specific to the mobile body can be accurately measured.
摘要:
A coated steel sheet having excellent corrosion resistance comprises: a zinc or a zinc alloy plated steel sheet or an aluminum or an aluminum alloy plated steel sheet; a composite oxide coating formed on the surface of the plated steel sheet; and an organic coating formed on the composite oxide coating. The composite oxide coating contains a fine particle oxide and a phosphoric acid and/or a phosphoric acid compound. The organic coating has thickness of from 0.1 to 5 &mgr;m.
摘要:
A phosphate-treated steel plate comprises a zinc-base plated steel plate; a zinc phosphate coating layer formed on the surface of the zinc-base plated steel plate; and an organic or inorganic coating formed on the zinc phosphate coating layer. The organic coating comprises at least one organic resin selected from the group consisting of an ethylene-base resin, an epoxy-base resin, a urethane-base resin, and an acrylic-base resin. The inorganic coating comprises a phosphate coating consisting mainly of a phosphate.
摘要:
A hot-dip Zn—Al alloy coated steel sheet exhibiting a beautiful coating appearance with metallic luster, in which no spangle or very fine spangles are formed, and having excellent blackening resistance and a method for manufacturing the hot-dip Zn—Al alloy coated steel sheet are provided. The hot-dip Zn—Al alloy coated steel sheet includes a hot-dip Zn—Al alloy coating layer containing 1.0 to 10 percent by mass of Al, 0.2 to 1.0 percent by mass of Mg, 0.005 to 0.1 percent by mass of Ni, and the balance being Zn and incidental impurities on at least one surface of a steel sheet. The manufacturing method includes the steps of dipping the steel sheet into a hot-dip Zn—Al alloy coating bath and pulling up and cooling the steel sheet, wherein the steel sheet pulled up from the coating bath is cooled to 250° C. at a cooling rate of 1° C. to 15° C./sec.