Abstract: It is known from the prior art that holes in a workpiece are filled completely with a solder powder, which leads especially in the case of large holes to the formation of cracks within the solder due to the large volume filled in once the solder cools off after soldering. The invention provides a method for closing a recess of a workpiece, which allows closing an opening of a recess without the risk of crack formation, by using only a solder film for closing the recess. The solder film has a content of non-melting material and therefore is substantially less prone to form cracks.

Abstract: The invention relates to a method for removing an area of a layer of a component consisting of metal or a metal compound. According to prior art, corrosion products of a component are removed in a first step by applying a molten mass or by heating in a voluminous powder bed. This requires high temperatures or a large amount of space. The inventive method for removing corrosion products of a component is characterized in that a cleaning agent is applied locally, which removes the corrosion products by means of a gaseous reaction product.

Abstract: The invention relates to a method for removing an area of a layer of a component consisting of metal or a metal compound. According to prior art, corrosion products of a component are removed in a first step by applying a molten mass or by heating in a voluminous powder bed. This requires high temperatures or a large amount of space. The inventive method for removing corrosion products of a component is characterized in that a cleaning agent is applied locally, which removes the corrosion products by means of a gaseous reaction product.

Abstract: The invention relates to a method for removing an area of a layer of a component consisting of metal or a metal compound. According to prior art, corrosion products of a component are removed in a first step by applying a molten mass or by heating in a voluminous powder bed. This requires high temperatures or a large amount of space. The inventive method for removing corrosion products of a component is characterized in that a cleaning agent is applied locally, which removes the corrosion products by means of a gaseous reaction product.

Abstract: It is known from the prior art that holes in a workpiece are filled completely with a solder powder, which leads especially in the case of large holes to the formation of cracks within the solder due to the large volume filled in once the solder cools off after soldering. The invention provides a method for closing a recess of a workpiece, which allows closing an opening of a recess without the risk of crack formation, by using only a solder film for closing the recess. The solder film has a content of non-melting material and therefore is substantially less prone to form cracks.

Abstract: The invention relates to a method for removing an area of a layer of a component consisting of metal or a metal compound. According to prior art, corrosion products of a component are removed in a first step by applying a molten mass or by heating in a voluminous powder bed. This requires high temperatures or a large amount of space. The inventive method for removing corrosion products of a component is characterized in that a cleaning agent is applied locally, which removes the corrosion products by means of a gaseous reaction product.

Abstract: Prior art coating methods have the following drawback in that the dimensions of existing holes in the substrate are altered when coating them thereby limiting the function and effect of the hole and of the substrate. The inventive method for coating a substrate having holes makes it possible for holes to retain their dimensions due to the fact that they are protected by a plug.

Abstract: A method is directed toward decoating a parent body, provided with an anti-corrosion coating, of a turbine blade. An outer part of the anti-corrosion coating is removed abrasively by a water jet. An inner part of the anti-corrosion coating is then removed chemically. This combination permits efficient and cost-effective decoating of the turbine blade.

Abstract: A method is directed toward decoating a parent body, provided with an anti-corrosion coating, of a turbine blade. An outer part of the anti-corrosion coating is removed abrasively by a water jet. An inner part of the anti-corrosion coating is then removed chemically. This combination permits efficient and cost-effective decoating of the turbine blade.