Method for joining electrical steel laminations and device for carrying out such a method
AssigneeHSP Hochspannungsgeräte GmbH
InventorsKlaus Koeck, Klaus Pointner
Life of this patent
Estimating the term…
Abstract
A method for joining a multiplicity of electrical steel laminations to form a steel lamination stack includes stacking electrical steel laminations coated with an electrical steel coating and baking the electrical steel laminations together in the stack by applying pressure and heat. The steel lamination stack to be baked is inserted in a boiler in the form of a pressure vessel. The boiler is hermetically locked and in particular is completely filled with a liquid medium, whereupon the liquid medium is heated to a predetermined temperature, and the electrical steel laminations are baked together for a predetermined duration at a predetermined pressure. A device for carrying out the method is also provided.
Claims13
A device for joining a multiplicity of electrical steel laminations to form a steel lamination stack, the device comprising:
- a boiler configured as a pressure vessel, said boiler having a receiving cavity for receiving the steel lamination stacks to be baked, said receiving cavity being accessible through a hermetically sealable loading opening;
- a reservoir for a liquid medium;
- a line connecting said reservoir to said receiving cavity;
- a pump and valve control device configured to fill and optionally empty said receiving cavity with the liquid medium from said reservoir;
- a heating fluid chamber to be filled with a heating fluid;
- and
- a heating device configured to heat the liquid medium present in said receiving cavity;
- said heating device, said heating fluid chamber and said receiving cavity being disposed to cause the heating fluid to be heated by said heating device and to cause the heating fluid in turn to release heat of the heating fluid to the liquid medium contained in the receiving cavity.
Dependencies are inferred from the claim text.