Armour plate for strongboxes, safes, burglar-proof wall claddings and the like and process for producing it

摘要

An armour plate for strongboxes, safes, burglar-proof wall claddings and the like contains a three-layer structure: a perforated plate is fastened on a base plate. One or more hard particles are inserted into the chambers formed by the holes of the perforated plate. Moreover, these chambers are filled partially or completely with a metal powder. A covering layer consisting of high-alloy rust-resistant or carbide-containing material is applied over the perforated plate and its holes by build-up welding. During this build-up welding, the powder cakes a little in the chambers, but without the hard particles contained therein being embedded with complete firmness. A plurality of such structures can be arranged one above the other, offset or not offset (Figure 1). <IMAGE>