Abstract: Metal strip may be directly cast by deposit of a melt layer onto a chill surface. Quality of both the upper and lower surfaces of strip case in this manner may be substantially improved according to the invention by casting on a chill roll having fine, circumferential, surface grooving of a particular geometry.
Type:
Grant
Filed:
July 19, 1988
Date of Patent:
September 12, 1989
Assignee:
Battelle Development Corporation
Inventors:
Edwin S. Bartlett, Robert E. Maringer, Judith J. Rayment
Abstract: A surface mounted chip soldering apparatus comprises a number of stations for fluxing and soldering the chip. For each station, the chip is carried by a suction pad in which is created a partial vacuum by a respective piston and cylinder mounted on a turret. The piston is upwardly spring biassed and operated in time and in sequence by pneumatically operated pistons to hold and to reject the chips as required for carrying out a soldering sequence.