Abstract: An injector particularly for a vacuum die-casting apparatus, comprising an injector body provided with at least one first opening for injecting/aspirating a protective gas and at least one second opening for loading molten material, which are arranged in order of operation. The injector body is further provided with a chamber for containing material and for the sliding of a piston for pushing the material into a die. The injector also comprises elements for cleaning and lubricating the external surface of the piston which are arranged in order of operation on a corresponding supporting element which is separate from the injector body.

Abstract: A device for coupling multiple connectors, comprising two connector supporting plates, one fixed and one movable, and two threaded members which are supported by the two plates; one of the members has a combined rotary and translatory motion for the coupling and uncoupling of the plates; the member provided with combined rotary and translatory motion is associated with a fluid-actuated actuator for the approach and spacing of the threaded members.

Abstract: A holding furnace, particularly for a die-casting apparatus, comprising a bucket which can be heated, is adapted to contain molten material and is provided with a lid which can be opened and is shaped substantially like an inverted cup; the lid is provided with at least one opening for introducing protective gas having a higher relative density than air and adapted to generate an atmosphere for protection from contact with air for the molten material at regions that are free from the containment means walls of the bucket.

Abstract: A vacuum die-casting method for producing castings of nonferrous alloys, comprising the steps of:

Abstract: An injector particularly for a vacuum die-casting apparatus, comprising an injector body provided with at least one first opening for injecting/aspirating a protective gas and at least one second opening for loading molten material, which are arranged in order of operation. The injector body is further provided with a chamber for containing material and for the sliding of a piston for pushing the material into a die. The injector also comprises elements for cleaning and lubricating the external surface of the piston which are arranged in order of operation on a corresponding supporting element which is separate from the injector body.