Abstract

An aluminum alloy for components with increased rigidity, having a tensile yield strength Rp0.2>200 MPa and simultaneous elongation at break A>6% after a heat treatment, or a tensile yield strength Rp 0.2>120 MPa and simultaneously high elongation at break A>9% in the cast state, or >10% after a T6 heat treatment, in particular for structural and chassis components of a motor vehicle, containing 9 to 11.5 wt % silicon, 0.5 to 0.8 wt % manganese, 0.2 to 1.0 wt % magnesium, 0.1 to 1.0 wt % copper, 0.2 to 1.5 wt % zinc, 0.05 to 0.4 wt % zirconium, 0.01 to 0.4 wt % Cr, max. 0.2 wt % iron, max. 0.15 wt % titanium, 0.01 to 0.02 wt % strontium and the remainder as aluminum and production-related impurities with a maximum total of 0.5 wt %.

IPC Classes  ?

• C22C 21/04 - Modified aluminium-silicon alloys
• C22F 1/043 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with silicon as the next major constituent
• C22C 21/02 - Alloys based on aluminium with silicon as the next major constituent
• B62D 29/00 - Superstructures characterised by material thereof
• C22F 1/04 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon

Abstract

0.2>200 MPa and at the same time a high elongation at break A>9% after a T6 heat treatment, in particular for structural and chassis parts of a motor vehicle.

IPC Classes  ?

• C22C 21/02 - Alloys based on aluminium with silicon as the next major constituent
• C22C 21/04 - Modified aluminium-silicon alloys
• C22F 1/043 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with silicon as the next major constituent
• B22D 21/00 - Casting non-ferrous metals or metallic compounds so far as their metallurgical properties are of importance for the casting procedureSelection of compositions therefor

Abstract

An aluminium alloy for components with increased rigidity, having a tensile yield strength Rp0.2 > 200 MPa and simultaneous elongation at break A > 6% after a heat treatment, or a tensile yield strength Rp 0.2 > 120 MPa and simultaneously high elongation at break A > 9 % in the cast state, or > 10% after a T6 heat treatment, in particular for structural and chassis components of a motor vehicle, containing 9 to 11.5 wt% silicon, 0.5 to 0.8 wt% manganese, 0.2 to 1.0 wt% magnesium, 0.1 to 1.0 wt% copper, 0.2 to 1.5 wt% zinc, 0.05 to 0.4 wt% zirconium, 0.01 to 0.4 wt% Cr, max. 0.2 wt% iron, max. 0.15 wt% titanium, 0.01 to 0.02 wt% strontium and the remainder as aluminium and production-related impurities with a maximum total of 0.5 wt%.

IPC Classes  ?

• C22C 21/02 - Alloys based on aluminium with silicon as the next major constituent
• C22C 21/04 - Modified aluminium-silicon alloys
• C22F 1/043 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with silicon as the next major constituent

Abstract

The invention relates to a plasma spray device (1) for coating a curved surface (21), in particular a convex inner surface (21) of a bore or pipe wall. A first plasma burner (4) for generating a coating beam (5) from a first coating material (6) by means of an arc is provided at a burner shaft (3) of the plasma spray device (1) such that the first plasma burner (4) for coating the curved surface (21) can be rotated about a shaft axis (A) of the burner shaft (3). According to the invention, a treatment device (7, 71) that is rotatably arranged about the shaft axis (A) is additionally provided at the burner shaft (3) for carrying out a surface treatment. The invention further relates to a coating method for coating a curved surface.

IPC Classes  ?

• C23C 4/12 - Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
• C23C 4/16 - WiresTubes
• C23C 4/18 - After-treatment
• C23C 26/00 - Coating not provided for in groups
• B05B 7/22 - Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating the material to be sprayed electrically, e.g. by arc
• B05B 13/06 - Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups specially designed for treating the inside of hollow bodies
• H05H 1/44 - Plasma torches using an arc using more than one torch
• C23C 4/02 - Pretreatment of the material to be coated, e.g. for coating on selected surface areas

Abstract

The invention relates to a method for coating a substrate, in which a starting material (P) in the form of a process beam (2) is sprayed on a surface of the substrate (10) by means of thermal spraying, wherein initially the surface of the substrate (10) is pretreated without application of material by a plasma flame (2') of a plasma spray device (3,3') and then the surface is subjected to the process beam (2) that comprises the starting material (P).

IPC Classes  ?

• C23C 4/12 - Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
• C23C 4/16 - WiresTubes
• C23C 4/18 - After-treatment
• C23C 26/00 - Coating not provided for in groups
• B05B 7/22 - Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating the material to be sprayed electrically, e.g. by arc
• B05B 13/06 - Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups specially designed for treating the inside of hollow bodies
• H05H 1/44 - Plasma torches using an arc using more than one torch
• C23C 4/02 - Pretreatment of the material to be coated, e.g. for coating on selected surface areas