35results 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.

Provided is a hot-dip-galvanized steel sheet which exhibits excellent appearance, post-pressing plating adhesion, spot-welding properties, and post-pressing / post-coating corrosion resistance. This hot-dip-galvanized steel sheet has a yield stress (YS) of 260-350MPa, inclusive, and has: a steel sheet comprising a composition containing, in mass%, C in the amount of 0.05-0.1%, inclusive, Si in the amount of 0.10% or less, Mn in the amount of 0.30-0.70%, inclusive, P in the amount of 0.040% or less, S in the amount of 0.010% or less, N in the amount of 0.005% or less, and Al in the amount of 0.10% or less, with Fe and inevitable impurities constituting the remainder; a hot-dip galvanized layer containing Al in the amount of 0.3-0.6 mass%, inclusive, and formed on at least part of the surface of the steel sheet; and an intermetallic compound present between the steel sheet and the hot-dip galvanized layer, and containing Al in the amount of 0.12gm-2 to 0.22gm-2, inclusive, and Fe2Al5 having an average particle diameter of 1μm or less.

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 discloses a metallized ceramic substrate and a preparation method thereof. The metalized ceramic substrate is prepared according to the following steps: (1) preparing an aluminum nitrideceramic substrate; and (2) forming a silver layer on the surface of the aluminum nitride ceramic substrate; (3) forming an organic layer on the silver layer away from the surface of the aluminum nitride ceramic substrate; (4) forming a copper paste layer on the organic layer away from the surface of the silver layer so as to form a metallized ceramic substrate precursor; and (5) sintering the metallized ceramic substrate precursor under vacuum. When in vacuum sintering, the temperature of the vacuum sintering is relatively high, and the silver layer diffuses into the aluminum nitride ceramicsubstrate to react with aluminum nitride to form a silver nitride transition layer to improve the bonding force; during the process of the vacuum sintering, the silver layer does not react with the copper paste layer due to the isolation of the organic layer, and the silver layer is prevented from migrating to the copper paste layer; the metallized ceramic substrate prepared by the invention has high conductivity and good plating adhesion. At the same time, the metallized ceramic substrate prepared by the invention has excellent heat cycle resistance.

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.

The present invention provides a thermoplastic resin composition excellent in plating adhesion to the surface of a molded product, paintability and impact resistance, and a molded product thereof. This composition is obtained by graft-polymerizing a monomer component (b) composed of an aromatic vinyl compound, a vinyl cyanide compound, and other copolymerizable monomer compounds as needed in the presence of a rubbery polymer (a). The obtained thermoplastic resin composition formed of the rubber-reinforced thermoplastic resin (A) is characterized in that the content of the rubber-like polymer (a) in the rubber-reinforced thermoplastic resin is 10 to 25% by weight, and the content of acetone in the rubber-reinforced thermoplastic resin is The content of vinyl cyanide monomer units in the soluble fraction is 15-40% by weight, the ratio Mw / Mn of the weight-average molecular weight Mw to the number-average molecular weight Mn of the acetone-soluble fraction is 2-5, and the acetone can be The ratio Mz / Mn of the Z-average molecular weight Mz and the number-average molecular weight Mn of the solution is 5-11.

Provided is a method for manufacturing a high-strength hot-dip galvanized steel sheet, a method for manufacturing a hot-rolled steel plate for a high-strength hot-dip galvanized steel sheet, a methodfor manufacturing a cold-rolled steel plate for a high-strength hot-dip galvanized steel sheet, and a high-strength hot-dip galvanized steel sheet, the high-strength hot-dip galvanized steel sheet having exceptional molding properties, outer surface appearance, and plating adhesion. The Mn content is 2.00 to 10.00%. The concentration of solid-solution Mn within a depth of 5 [mu]m from the steel plate surface is 1.50% by mass or less, and the value obtained by dividing the average Mn mass percentage in the residual austenite by the average Mn mass percentage in the ferrite is 2.0 or greater. Afirst heat treatment is performed for holding said sheet in a temperature range of 650 to 850 DEG C for 600 to 21600 s while the steel plate surface is exposed in an atmosphere having an H2 concentration of 0.1 to 25.0 vol% and a dew point of -45 to 0 DEG C, and a second heat treatment is performed for holding said sheet in a temperature range of 650 to 830 DEG C for 20 to 900 s in an atmosphere having an H2 concentration of 0.05 to 25.0 vol% and a dew point of -10 DEG C or less.

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.

A hot-dip galvanized steel sheet comprising a base steel sheet and a hot-dip galvanizing layer, the hot-dip galvanized steel sheet having a hot-dip galvanizing layer in which columnar crystals comprising 5% or less of Fe, 1.0% or less of Al, and a Zeta phase are interposed in 20% or more of the entire interface of the plating layer and the steel sheet on the surface of a base steel sheet in which a ferrite phase constitutes 40%-97% and a hard structure constitutes a total of 3% or more in terms of volume ratio in a range of 1 / 8 thickness to 3 / 8 thickness from the surface of the base steel sheet, and the volume ratio of the hard structure in a surface layer range to a depth of 20 mum in the base steel sheet from the interface of the plating layer and the base steel sheet is 0.10-0.90 times the volume ratio of the hard structure in the range of 1 / 8 thickness to 3 / 8 thickness, the hot-dip galvanized steel sheet having a refined layer on the interface side of the base steel sheet, and the average thickness of the refined layer, the average grain size of a ferrite phase in the refined layer, and the maximum diameter of oxides included in the refined layer each being prescribed.

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 thermoplastic resin composition excellent in plating adhesion to the surface of a molded product, paintability and impact resistance, and a molded product thereof. This composition is obtained by graft-polymerizing a monomer component (b) consisting of an aromatic vinyl compound, a vinyl cyanide compound, and, if necessary, other copolymerizable monomer compounds in the presence of a rubbery polymer (a). The thermoplastic resin composition formed by the obtained rubber-reinforced thermoplastic resin (A) is characterized in that the content of the rubbery polymer (a) in the rubber-reinforced thermoplastic resin is 10 to 25% by weight, and the acetone in the rubber-reinforced thermoplastic resin The content of vinyl cyanide monomer units in the soluble fraction is 15 to 40% by weight, the ratio Mw / Mn of the weight average molecular weight Mw to the number average molecular weight Mn of the acetone soluble fraction is 2 to 5, and the acetone can be The ratio Mz / Mn of the Z-average molecular weight Mz and the number-average molecular weight Mn of the solution is 5-11.

To provide a resin composition, a resin sheet with a support, and a multilayer printed wiring board using them, which are excellent in film coating and heat resistance, and have excellent plating adhesion and developability when used in a multilayer printed wiring board. , Semiconductor device. A resin composition comprising a dicyclopentadiene type epoxy resin (A) represented by the following formula (1), a photocuring initiator (B), a compound (C) represented by the following formula (2) and the compound (D) which has an ethylenically unsaturated group other than this (C)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.

Provided are: a high-strength hot-dipped galvanized steel sheet which uses, as a base material, a high-strength steel sheet containing Si, Mn and Cr and has excellent plating adhesion; and a method for producing the high-strength hot-dipped galvanized steel sheet. In an oxidation furnace, steel containing Si, Mn and Cr is subjected to an oxidation treatment at an exit side temperature (T), and then the steel is subjected to reduction annealing and hot dip galvanization. Alternatively, the steel is alloyed by being heated to a temperature of 460-600 DEG C for 10-60 seconds. In this connection, the exit side temperature (T) satisfies the following conditions: A = 0.015T-7.6 (T>=507 DEG C) A=0 (T<507 DEG C) B=0.0063T-2.8 (T>=445 DEG C) B=0 (T<445 DEG C) [Si]+A*[Cr]<=B, wherein [Si]: mass% of Si in the steel [Cr]: mass% of Cr in the steel

The invention provides an ABS (acrylonitrile-butadiene-styrene) material for electroplating, and a preparation method and application thereof. The ABS material for electroplating comprises the following components in parts by weight: 30-60 parts of common-emulsion-process ABS resin, 15-40 parts of high-flow-emulsion-process ABS resin, 2-10 parts of body-process ABS resin, 8-15 parts of high rubber powder, 6-12 parts of heat-resisting agent, 0.2-0.6 part of antioxidant and 0.5-1.5 parts of lubricant. The high-flow-emulsion-process ABS resin and body-process ABS resin are added to the ABS material for electroplating, thereby enhancing the flowability of the material, improving the processibility of the material, lowering the internal stress of the injection molding component, obtaining favorable electroplating binding force and enhancing the electroplating yield.

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.