Method of electroslag surfacing of components having a cylindrical surface

A method of surfacing a metal component having a cylindrical surface by an electroslag surfacing method, comprising:

• placing the component in a vertical position;
• placing a mold member around the lower end of the component with the inner surface of the mold spaced a distance from the cylindrical surface of the component to define a gap equal to the thickness of the surfacing;
• forming a molten metal pool having a metal composition of the metal to be applied to the component between the mold member and the cylindrical surface with a slag layer over the upper surface of the pool;
• inserting a plurality of consumable electrodes each having a composition corresponding to the metal to be applied to the component and each of which is in the form of a bar having a large cross-section into the molten metal pool and spaced between the mold member and the cylindrical surface and at intervals in the circumferential direction of the mold;
• supplying a multi-phase alternating current power to said electrodes and said component;
• while thus supplying power, raising the mold, the molten metal pool and the electrodes vertically and parallel to the cylindrical surface and at the time rotating the component around the vertical cylindrical axis thereof;
• and
• continuously adding molten metal having a composition corresponding to the metal to be applied to the component to the surface of the slag layer on the molten metal pool.