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Coating material for protecting metals, especially steel, from corrosion and/or scaling, method for coating metals and metal element

A technology of oxide skin and metal coating, which is applied in the direction of anti-corrosion coatings, metal material coating technology, conductive coatings, etc., to achieve the effect of improving conductivity

Inactive Publication Date: 2009-02-04
NANOX
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] Presently there is no wet chemical coatable known from the prior art that protects steel from corrosion and / or Coatings that are still weldable after heat treatment at temperatures above 600°C

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] 10 g of graphite powder (particle size <10 μm) are added to 100 g of a 60% silicone polyester solution (eg in xylene, available under the trade name Silikoftal) and dispersed thoroughly using a dissolver. Mix 70 g of ethanol, 10 g of carnauba wax dispersion (solids content 20 wt % in test gasoline), 50 g of aluminum pigment paste (eg Decomet Hochglanz, Al 1002 / 10 from Schlenk) and 20 g of zinc paste (eg Zinkflake GTT, available from Eckart) was added to the mixture and it was stirred homogeneously with a paddle stirrer under low shear for several hours.

[0054] After appropriate dilution with butyl glycol, the finished paint is applied to an alkaline degreased steel substrate using a gravity cup (Flieβbecher)-paint gun (e.g. Sata Jet, 1.2mm nozzle), or on a suitable substrate The doctor blade is applied under geometry (flat metal plate or slab) such that a wet film thickness of approximately 10-40 μm is obtained. The coating was hardened for about 10 minutes at a surf...

Embodiment 2

[0056] 30 g of graphite powder (particle size <10 μm) were added to 100 g of a 60% silicone polyester solution (eg in xylene, available under the trade name Silikoftal) and dispersed thoroughly using a dissolver. 70 g of xylene, 10 g of carnauba wax dispersion (solids content 20% by weight in test gasoline) and 30 g of aluminum pigment paste (e.g. Decomet Hochglanz, Al 1002 / 10 from Schlenk) were added to the mixture and mixed with a paddle A paddle mixer stirs it in evenly for hours at low shear.

[0057] After appropriate dilution with butyl glycol, the finished paint is applied to a grease-free galvanized steel substrate using a gravity cup-paint spray gun (e.g. Sata Jet, 1.2mm nozzle), or on a suitable substrate geometry ( flat metal plate or slab) using a doctor blade such that a wet film thickness of approximately 10-40 μm is obtained. The coating was hardened for about 10 minutes at a surface temperature of 220°C. The paint can also be applied to the galvanized steel s...

Embodiment 3

[0059] 50 g of butyl glycol and 85 g of iron pigment paste (eg STAPA TA Ferricon 200 from Eckart) were added to 100 g of a 60% solution of silicone polyester (in xylene, eg available under the trade name Silikoftal) and Stir it in evenly with low shear.

[0060] The finished paint is applied to an alkaline degreased steel substrate using a gravity cup-paint spray gun (e.g. Sata Jet, 1.4mm nozzle) or a doctor blade with suitable substrate geometry (flat metal sheet or slab) Coat such that a wet film thickness of approximately 10-40 μm is obtained. The coating was cured for 10 minutes at a surface temperature of 250°C.

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Abstract

The invention surprisingly finds that when a suitable binder including a suitable filler is used during the high temperature treatment of a curing process, the coating materials of the invention change in such a manner that electrically conducting reactive layers are formed that allow welding and especially spot welding together with the metal substrate even after treatment at temperatures of more than 800 DEG C.

Description

technical field [0001] The present invention relates to coatings for the protection of metals, especially steel, from corrosion and / or scaling, a method of coating metals and metal components. Background technique [0002] Load-bearing steel components, such as body components in the automotive industry, are usually made of high-strength quenched and tempered steel. Here, the steel is transformed into the austenitic region by annealing at temperatures above 800-900°C, the steel is hot-formed and then cooled again at a sufficiently high cooling rate to form a martensitic high-strength organizational structure. If it cools and thus hardens in the forming tool, it is called press hardening High-strength components can be prepared in this way. For the manufacture of larger components or components with complex geometries, a two-stage forming process is increasingly being used, which consists of preforming at room temperature (cold forming) followed by hot forming of the pre-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/08C09D5/24C09D5/10B05D7/14C09D183/04C23F15/00C21D7/13C23C18/12
CPCB05D2202/10C23C18/127Y10T428/31678C23C18/1254C09D5/24C09D5/10C09D5/084C23C18/122B05D2701/40B05D3/0254C23C26/00
Inventor S·赛皮尔S·高蒂克N·里尤特
Owner NANOX
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