Screw spindle machine and method of manufacturing the same
View Patent ↗A screw spindle machine having a tubular casing ( 10 ) that is made of cast metal and is lined with a wear resistant layer ( 16 ), with the wear resistant layer ( 16 ) being encapsulated in a steel shell ( 20 ) that matches the outer peripheral shape of the layer ( 16 ).
1. A screw spindle machine comprising:
a tubular casing that is made of cast metal;
a wear resistant layer which lines the tubular casing and has an outer peripheral shape; and
a steel shell which encapsulates the wear resistant layer and which matches the outer peripheral shape of the wear resistant layer, the steel shell having a form of a one-piece tube.
2. The screw spindle machine according to claim 1 , wherein the wear resistant layer, encapsulated in the shell, is fixed in the casing by an adhesive.
3. The screw spindle machine according to claim 1 , wherein the wear resistant layer is comprised mainly of SiC.
4. The screw spindle machine according to claim 1 , wherein the wear resistant layer includes additives that increase electrical conductivity of the wear resistant layer.