36results about How to "Excellent plating adhesion" patented technology

The present invention provides a galvanized steel sheet having excellent plating wettability and plating adhesion even when the base steel sheet contains Si and Mn, and provides a manufacturing method therefor. The galvanized steel sheet pertaining to the present invention includes a base steel plate containing Si, Mn, and other predetermined components, and a galvanized layer formed on at least one surface of the base steel plate. The base steel plate has an HA value and an HB that satisfy all of the following relational expressions, wherein HA is the average hardness of the surface layer that extends to a depth of 50 mum from the interface between the base steel plate and the galvanized layer, and HB is the average hardness of deep portions in excess of 50 mum from the interface. 50 <= HA <= 500 ... (1) 50 <= HB <= 500 ... (2) 0.5 <= HA / HB <= 0.9 ... (3)

A plated steel material has a steel material, a plating layer that covers the surface of the steel material, and an interface alloy layer formed at the boundary between the steel material and the plating layer, wherein: the compositional makeup of the plating layer includes, in mass%, 20-83% of Zn and 2.5-46.5% of Al, the remaining portion being Mg and impurities, and the Mg content being not lessthan 10%. The structure of the plating layer comprises a quasicrystal phase, a MgZn2 phase, and a remaining structure; the area fraction of the quasicrystal phase is 30-60%; at least 90% by number ofthe quasicrystal phase is a quasicrystal phase of which the particle size in the longitudinal axis direction thereof is 0.05-1.0 [mu]m; the thickness of the plating layer is not less than 0.1 [mu]m;and the thickness of the interface alloy layer is not greater than 500 nm.

Disclosed is a practical mold release film which has excellent embeddability, while maintaining excellent properties of a mold release film using a syndiotactic polystyrene. Specifically disclosed is a mold release film having a mold release layer containing a syndiotactic polystyrene and a hydrogenated styrene thermoplastic elastomer. This mold release film is characterized in that the blending ratio of the hydrogenated styrene thermoplastic elastomer relative to the entire resin of the mold release layer is within the range of 15-35 wt%. The hydrogenated styrene thermoplastic elastomer is preferably (i) a styrene-ethylene-butylene-styrene block copolymer or (ii) a styrene-ethylene-propylene-styrene block copolymer. The mold release layer may further contain a cyclic polyolefin resin.

The invention provides an electroplating grade PC / ABS alloy material with high electroplating binding force and a preparation method thereof. The electroplating grade PC / ABS alloy material contains: 10-70 parts by weight of polycarbonate (PC), 10-70 parts by weight of styrene-butadiene-acrylonitrile copolymer (ABS), 20 parts by weight of terminalized nitrile rubber -35 parts by weight and optional additives, wherein the polycarbonate, styrene-butadiene-acrylonitrile copolymer and end-grouped nitrile rubber add up to 100 parts by weight. The invention further optimizes the injection molding process of the electroplating grade PC / ABS alloy product. The electroplating grade PC / ABS alloy material of the present invention has the advantages of easy electroplating, high electroplating bonding force, high yield rate and few surface defects when it is made into products.

Provided are a steel sheet that has a hot-dip galvanized layer and that exhibits superior plating wettability and plating adhesion, and a production method thereof. A steel sheet containing readily oxidizable elements including Si and Mn is used as a base material. The hot-dip galvanized steel sheet has a hot-dip galvanized layer (A) on the surface of the steel sheet and is characterized by having a (B) layer that is directly under the surface of and inside of the steel sheet. The (B) layer has a thickness of 0.001 [mu]m to 0.5 [mu]m. By mass, the (B) layer contains 50 mass% or more of unoxidized Fe, less than 50 mass% total of one or more oxides of Fe, Si, Mn, P, S, and / or Al, and contains unoxidized C, Si, Mn, P, S, and / or Al in the following quantities: less than 0.05 mass% of C; less than 0.1 mass% of Si; less than 0.5 mass% of Mn; less than 0.001 mass% of P; less than 0.001 mass% of S; and less than 0.005 mass% of Al.

The present invention relates to a plated steel sheet often used as materials for vehicles, home appliances, construction and the like and, more specifically, to a plated steel sheet having a multilayer structure and a method for manufacturing the same.

To provide a resin composition, a resin sheet with a support, a resin composition with excellent coating properties and heat resistance, excellent plating adhesion and developability when used in a multilayer printed wiring board, and a multilayer printed wiring board using them, semiconductor device. The resin composition contains a biphenyl aralkyl type epoxy resin (A) represented by the following formula (1), a photocuring initiator (B), a compound (C) represented by the following formula (2), and (C) The compound (D) which has an ethylenically unsaturated group other than a component.

The present invention provides a high-strength hot-dip galvanized steel sheet that uses a high-strength steel sheet containing Si, Mn, and Cr as a base material and has excellent plating adhesion and a method for producing the same. Steel containing Si, Mn, and Cr is oxidized at the exit temperature T in an oxidation furnace, followed by reduction annealing and hot-dip galvanizing. Or further alloying treatment is carried out by heating at a temperature of 460-600° C. for 10-60 seconds. The above outlet temperature T satisfies the following relationship: A=0.015T‑7.6 (T≥507°C) A=0 (T<507°C) B=0.0063T‑2.8 (T≥445°C) B=0 (T<445°C) °C) [Si]+A×[Cr]≦B, where [Si]: Si mass % in steel [Cr]: Cr mass % in steel.

The present invention provides a method for producing a high-strength hot-dip galvanized steel sheet that can suppress problems caused by oxides formed on the surface of the steel sheet in a Cr-containing steel sheet, and is excellent in plating adhesion and surface appearance. A method for manufacturing high-strength alloyed hot-dip galvanized steel sheets. It is to manufacture high-strength hot-dip galvanized steel sheets by a method with the following steps, which includes: a first heating step, in a specific H 2 Concentration, a specific dew point atmosphere, the steel plate with a specific composition is kept at a specific temperature for a specific time; the cooling process is to cool the steel plate after the first heating process; the electrolytic treatment process is to cool the steel plate under specific conditions. After the steel plate is electrolytically treated; the second heating process, in a specific H 2 Concentration, specific dew point atmosphere, the steel plate after the electrolytic treatment process is kept at a specific temperature for a specific time; the plating treatment process is to perform hot-dip galvanizing treatment on the steel plate after the second heating process.