摘要:
An electrical steel sheet (10) is provided with a base iron (1) and an insulating film (2) formed on a surface of the base iron (1). The insulating film (2) includes 100 parts by mass of a first component containing a metal phosphate, and 5 parts by mass to 45 parts by mass of a second component composed of particles of one or more kinds selected from a group consisting of a polyolefin wax, an epoxy resin and an acrylic resin, the particles having an average particle size of 2.0 μm to 15.0 μm and a melting point of 60° C. to 140° C.
摘要:
A non-oriented magnetic steel sheet contains, by mass %, C: 0.005% or less; Si: 2% to 4%; Mn and V: totally 11% or less; and Al: 3% or less, with the balance being Fe and inevitable impurities, wherein a Mn concentration (mass %) and a V concentration (mass %) in a thickness direction satisfy the following formula. 0.1
摘要:
A non-oriented magnetic steel sheet contains, by mass %, C: 0.005% or less; Si: 2% to 4%; Mn and V: totally 11% or less; and Al: 3% or less, with the balance being Fe and inevitable impurities, wherein a Mn concentration (mass %) and a V concentration (mass %) in a thickness direction satisfy the following formula. 0.1
摘要:
Exemplary embodiments of the present invention can provide a method for producing hot dip galvannealed steel sheet which exhibits high strength, high ductility, and a significant degree of alloying. Such exemplary method can be applied to, e.g., a pickled hot rolled steel sheet or an annealed and pickled cold rolled steel sheet containing between about 0.02% and about 0.2% C and between about 0.15% and about 2.5% Mn, and may include one or more procedures for rinsing the sheet, preplating the sheet with Ni, rapidly heating the sheet in a nonoxidizing atmosphere to a sheet temperature of about 430° C. to 500° C., then hot dip plating the sheet in a galvanizing bath containing between about 0.05% and about 0.2% Al, and then immediately heating the sheet rapidly for an alloying treatment. Such exemplary method can provide an improved alloying speed, improved plating appearance and better plating adhesion.
摘要:
Exemplary embodiments of the present invention can provide a galvanization method for hot-rolled steel sheet, cold-rolled steel sheet, or plating sheet of various compositions, which can avoid nonplating defects by using an Ni preplating procedure. For example, an exemplary galvanization method can be provided for pickled hot-rolled steel sheet or annealed cold-rolled steel sheet which is free from non-plating defects which includes cleaning the surface of the plating sheet, preplating it with Ni, rapidly heating the sheet in a nonoxidizing or reducing atmosphere to a sheet temperature of about 430 to 500° C. at a heating a rate of about 20° C./sec or more, and then hot dip plating the sheet in a galvanization bath. The exemplary amount of Ni preplating can be determined based on the plate type and amount of Si in the sheet steel to produce a hot dip galvanization that is free from non-plating defects.
摘要:
The present invention provides a method of production of hot dip galvannealed steel sheet with excellent workability compared with the Sendzimir method or non-oxidizing furnace method and further with excellent powdering or slidability, that is, a method of production of hot dip galvannealed steel sheet with excellent workability, powdering, and slidability characterized by processing a slab containing, by mass %, C: 0.01 to 0.12%, Mn: 0.05 to 0.6%, Si: 0.002 to 0.1%, P: 0.05% or less, S: 0.03% or less, sol. Al: 0.005 to 0.1%, and N: 0.01% or less and having a balance of Fe and unavoidable impurities by hot rolling, pickling, cold rolling, then annealing at 650 to 900° C., cooling to 250 to 450° C., holding at said temperature range for 120 seconds or more, then cooling to room temperature, pickling, preplating Ni or Ni—Fe without intermediate temper rolling, heating by 5° C./sec or more down to 430 to 500° C., galvanizing in a galvanization bath, wiping, then heating by a rate of temperature rise of 20° C./sec or more up to 460 to 550° C., not providing any soaking time or holding for soaking for less than 5 seconds, then cooling by 3° C./sec or more, and final temper rolling by a 0.4 to 2% elongation rate.
摘要:
The present invention provides an inorganic-organic composite-treated zinc-plated steel sheet whose treated coatings do not contain any chromium and which is excellent in corrosion resistance after degreasing, coating adhesion and electrodeposition coating performance. The inorganic-organic composite-treated zinc-plated steel sheet, which is obtained by forming a zinc phosphate coating, in a coating weight of 0.3 to 5 g/m2, on the zinc-plated steel sheet surface and forming thereon a post-treatment coating, in a coating weight of 0.01 to 1 g/m2, by using a post-treatment composition containing at least one compound (A) selected from the group consisting of thiocarbonyl group-containing compounds, sulfide group-containing compounds and guanidyl group-containing compounds, an organic resin (B), a crosslinking agent (C) and an inorganic corrosion inhibitor (D).
摘要翻译:本发明提供了一种无机 - 有机复合处理的镀锌钢板,其经处理的涂层不含任何铬,并且在脱脂,涂层粘附性和电沉积涂布性能之后具有优异的耐腐蚀性。 通过在镀锌钢板表面上以0.3〜5g / m 2的涂布量形成磷酸锌被膜而得到的无机 - 有机复合处理镀锌钢板,并在其上形成 通过使用含有至少一种选自含硫代羰基的化合物,硫化物基团的化合物(A)的后处理组合物,涂覆重量为0.01〜1g / m 2的后处理涂布, 含有化合物和含胍基的化合物,有机树脂(B),交联剂(C)和无机缓蚀剂(D)。
摘要:
The present invention provides a steel sheet material used for a positive electrode can and a positive electrode can for an alkaline manganese battery capable of improving the battery characteristics for an alkaline manganese battery, characterized in that the plated steel sheet for a positive electrode can for an alkaline manganese battery has Ni-based diffusion plating layer having on the top layer many small pinholes of diameter not greater than 1 μm, i.e. submicron pinholes, formed on the surface of the steel sheet to be used as an internal surface of the can. Said submicron pinholes preferably have, as observed by SEM, diameter in the range of 0.1˜1 μm and are present at density not less than 30 pcs/(10 μm×10 μm). The surface of the steel sheet to be used as an external surface of the can preferably has a Fe—Ni diffusion plating layer and a Ni plating layer that has been softened by recrystallization.
摘要:
The present invention is intended to provide an inorganic-organic composite-treated zinc-plated steel sheet whose treated coatings do not contain any hazardous chromate and which is excellent in corrosion resistance after alkaline degreasing and coating adhesion. An inorganic-organic composite-treated zinc-plated steel sheet which has a zinc phosphate coating, in a coating weight of 0.3 to 5 g/m2, on the zinc-plated steel sheet surface and, thereon, a post-treatment coating, in a coating weight of 0.01 to 1 g/m2, containing an organic resin (A), a zirconium compound (B), an inorganic corrosion inhibitor (C) and an organic corrosion inhibitor (D).
摘要翻译:本发明旨在提供一种无机 - 有机复合处理的镀锌钢板,其经处理的涂层不含有任何有害的铬酸盐,并且在碱性脱脂和涂层粘合之后具有优异的耐腐蚀性。 一种无机 - 有机复合处理的镀锌钢板,其镀锌钢板表面上镀锌重量为0.3至5g / m 2,并在其上进行后处理 以含有有机树脂(A),锆化合物(B),无机腐蚀抑制剂(C)和有机缓蚀剂(D)的涂布量为0.01〜1g / m 2进行涂布。
摘要:
The present invention has an object to provide a surface-treated steel sheet which has highly balanced corrosion resistance and formability, and satisfies fundamental properties required mainly for steel sheets for automobile body, and a manufacturing method thereof. The surface-treated steel sheet of the invention is excellent in corrosion resistance and formability, comprising an amorphous inorganic film containing at least 5% magnesium and having a weight within a range of from 0.1 to 2.0 g/m2, formed on the surface of a zinc or zinc alloy plated steel sheet; wherein the inorganic film is soluble in an acidic solution and hardly soluble in a neutral or alkaline solution, and a manufacturing method thereof is provided. A zinc phosphate film may be provided between the galvanized steel sheet and the amorphous inorganic film. The inorganic film should preferably comprise one or more selected from the group consisting of phosphoric acid, phosphates, biphosphates, various condensed phosphoric acids, various condensed phosphates, organic phosphoric acid, and organic phosphates.
摘要翻译:本发明的目的是提供一种具有高度平衡的耐腐蚀性和成形性的表面处理钢板,并且满足主要用于汽车车身的钢板的基本特性及其制造方法。 本发明的表面处理钢板的耐腐蚀性和成形性优异,其特征在于,含有至少含有5%的镁,重量在0.1〜2.0g / m 2范围内的无定形无机膜, 锌或锌合金镀钢板; 其中无机膜可溶于酸性溶液,难溶于中性或碱性溶液,其制造方法。 可以在镀锌钢板和无定形无机膜之间设置磷酸锌膜。 无机膜应优选包含选自磷酸,磷酸盐,二磷酸盐,各种缩合磷酸,各种缩合磷酸盐,有机磷酸和有机磷酸盐中的一种或多种。