Process and configuration for producing wear-resistant surfaces
AssigneeVolkswagen Aktiengesellschaft
InventorsRolf Heinemann, Klaus Färber, Thomas Heider
Life of this patent
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Abstract
A wear-resistant surface is formed on a component formed of an AlSi alloy by using a thermal spraying or a laser beam treatment. A thermally conductive device is brought into a thermally conductive contact with the component so that the thermally conductive device touches the component during the step of forming the wear-resistant surface. The thermally conductive device is actively cooled.
Claims22
A configuration for producing a wear-resistant surface on a crankcase, comprising:
- a thermally conductive device configured to be disposed in a thermally conductive contact with a crankcase formed of an AlSi alloy;
- said thermally conductive device being configured to operate with a cooling medium;
- a surface treatment device configured to treat a surface of the crankcase;
- said thermally conductive device having at least one cooling plate configured to be disposed on at least one side of the crankcase having cylinder openings formed on the at least one side;
- and
- said at least one cooling plate being formed with channels for the cooling medium to flow therethrough.
A configuration for producing a wear-resistant surface on a crankcase, comprising:
- a thermally conductive device configured to be disposed in a thermally conductive contact with a cylinder bearing surface of a cylinder in a crankcase formed of an AlSi alloy;
- said thermally conductive device being configured to operate with a cooling medium;
- a surface treatment device configured to treat a surface of the crankcase;
- said thermally conductive device including at least one cooling mandrel formed to correspond to a cross section of the cylinder and configured to be disposed in the cylinder on at least one side of a coating zone of the cylinder bearing surface such that the thermally conductive contact is formed between said at least one cooling mandrel and the cylinder bearing surface;
- and
- said at least one cooling mandrel being formed with passages for the cooling medium to flow therethrough.
In combination with a crankcase having a cylinder with a cylinder bearing surface, the crankcase having a side formed with a cylinder opening, and the crankcase being formed of an AlSi alloy, a configuration for treating the crankcase, comprising;
- a thermally conductive device including a cooling medium;
- said thermally conductive device being in a thermally conductive contact with the crankcase formed of AlSi alloy;
- said thermally conductive device having a cooling plate disposed on the side formed with the cylinder opening;
- and
- said cooling plate being formed with channels for said cooling medium to flow therethrough.
In combination with a crankcase having a cylinder with a cylinder bearing surface and a coating zone on the cylinder bearing surface, the cylinder having a cross section and the crankcase being formed of AlSi alloy, a configuration for treating the crankcase, comprising:
- a thermally conductive device including a cooling medium;
- said thermally conductive device being in a thermally conductive contact with the crankcase formed of AlSi alloy;
- said thermally conductive device including a cooling mandrel formed to correspond to the cross section of the cylinder;
- said cooling mandrel being disposed in the cylinder on at least one side of the coating zone such that the thermally conductive contact is formed between said cooling mandrel and the cylinder bearing surface;
- and
- said cooling mandrel being formed with passage for said cooling medium to flow therethrough.
In combination with a component having a coating zone and being formed of AlSi alloy, a configuration for treating the component, comprising;
- a thermally conductive device including a cooling medium;
- said thermally conductive device being in a thermally conductive contact with the component formed of AlSi alloy;
- said thermally conductive device including a cooling-medium tank filled with said cooling medium up to a cooling medium level;
- and
- component being dipped into said cooling medium such that a given distance between the cooling medium level and the coating zone is maintained.
Dependencies are inferred from the claim text.