摘要:
A method of coating of steel products such as plate and sheet using an aluminum-zinc coating alloy includes modifying the coating bath with a particulate compound constituent in effective amounts to control the spangle facet size of the coated product, improve tension bend rust stain performance, and improve coated product paintability. Constituents include borides such as titanium boride and aluminum borides, carbides such as titanium carbide, and aluminides such as titanium aluminide. The method produces a coated steel product that does not require temper rolling for painting.
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:
A culvert having a corrosion resistant composite coating and a method of producing the corrosion resistant composite coating. The coating method is for use in a conventional hot dip coating line of the type wherein a steel strip, having been appropriately pretreated so as to be at or above the coating temperature and have its surface free of oxides, is caused to pass through a bath of molten coating metal. A fibrous aramid paper is bonded to the surface of the steel strip by pressing the fibers into the molten coating layer immediately after the steel strip exits the coating bath. The steel strip may be fabricted into construction products such as culvert which may be further protected with bituminous type coatings.
摘要:
Spherical glass beads of less than 30 mils in average diameter and preferably less than 5 mils in average diameter are embedded in metallic coatings such as aluminum, zinc, tin or lead to a depth of from 1/6 to 1/2 their average diameter by propelling said spheres by compressed air against the coating while it is in a molten condition.
摘要:
The objective of the present invention is to provide a composite plated steel sheet, which has excellent post-formation corrosion resistance by preventing the spread of cracks in a resin layer even if cracks occur in the plating layer of the composite plated steel sheet.
摘要:
A method of coating of steel products such as plate and sheet using an aluminum-zinc coating alloy includes modifying the coating bath with a particulate compound constituent in effective amounts to control the spangle facet size of the coated product, improve tension bend rust stain performance, and improve coated product paintability. Constituents include borides such as titanium boride and aluminum borides, carbides such as titanium carbide, and aluminides such as titanium aluminide. The method produces a coated steel product that does not require temper rolling for painting.
摘要:
A method of coating of steel products such as plate and sheet using an aluminum-zinc coating alloy includes modifying the coating bath with a particulate compound constituent in effective amounts to control the spangle facet size of the coated product, improve tension bend rust stain performance, improve coated surface appearance when brushed, and coated product paintability. Constituents include borides such as titanium boride and aluminum borides, carbides such as titanium carbide, and aluminides such as titanium aluminide. The method produces a coated steel product that does not require temper rolling for painting.
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 apparatus for injecting two fluids is provided with a first elongated header which extends in a straight line and is supplied with a first fluid, a second elongated header which extends along the first header and is fixed to the backside of the first header, a nozzle lead-in member for leading the first fluid from the first header and the second fluid from the second header, and a nozzle for mixing and injecting the fluids from the nozzle lead-in member. Such apparatus for injecting two fluids has a simple construction and can be produced efficiently. In using this apparatus for injecting two fluids in manufacturing minimized spangle molten plated steel plate, for which water atomized by compressed air is injected toward a surface of the steel plate strip running from bottom to top while passing through a plating bath, a main spangle removing mechanism and a spare spangle removing mechanism are provided and operated selectively and alternately, so that operation can be continued even when either of the mechanisms breaks down.