The Welding Institute

Chloride Silent Power, Ltd.

Kenneth W Brown

Stuart McLachlan

Christopher O'Neil-Bell

David J Riley

John Molyneus

Welding electrode arrangement

A welding monitor for use with a welding system is described. The monitor comprises a store (74) for storing at least two sets of predetermined acceptable ranges for one or more welding parameters such as voltage and current. A comparator bank (66,67) is provided for each parameter to compare the operating value of each parameter in use with the corresponding stored range or ranges. A display including sets of light emitting diodes (18-20) displays information relating to the stored ranges and operating values and is responsive to the comparator banks (66,67) to indicate the relationship between an operating value of at least one of the parameters and the corresponding predetermined range.

Welding monitor

A chuck assembly (8) is described comprising a plurality of external jaws (103) arranged in an annular configuration; and a corresponding plurality of internal jaws (122) positioned within a pipe (13) in use with the internal and external jaws in alignment. The jaws (103,122) are radially movable towards each other to grip the pipe wall therebetween. Each jaw (103,122) includes a gripping portion comprising a recess (128) or projection (127) respectively which cooperate to assist the gripping of the pipe wall by the chuck assembly (8). Examples of the use of these chuck assemblies in friction welding apparatus and pipeline construction apparatus are described.

Chuck assembly

Growing community of inventors

Cambridge, United Kingdom

Kenneth W Brown