Tubes and structures formed thereby

Metallurgical apparatus – Means for cutting solid metal with heat – e.g. – blowpipes – With pattern control means

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Details

266 57, 266 76, B23K 704, B23K 710

Patent

active

042746213

ABSTRACT:
A method and apparatus are disclosed for shaping an end of a tube in a configuration such that it may be joined to the surface of another body as by welding. The method disclosed involves profiling the end of a tube to conform to the surface of a body to which the tube end is to be joined, with a notional line on the end face that corresponds to the theoretical line of contact of the tube and body, cutting the tube wall at the profiled end to provide a beveled surface over the face of the end to the outer peripheral surface of the tube, and controlling the cutting so that the bevel surface formed progresses inwardly through the tube wall thickness to form a transition line on the profiled end face that substantially follows the notional line of contact between the innermost and the outermost peripheral edges of the profiled end face. The apparatus disclosed for shaping the end of an elongate tube has a mount to hold the tube adjacent to a cutter with a mechanism rotating the tube about its longitudinal axis relative to the cutter in order to cut around the periphery of the tube wall. A mechanism is further provided to displace the tube with respect to the cutter to form an acute angle therewith whereby a bevel surface may be cut on the end of the tube that extends between the end face of the tube and the outer peripheral surface of the tube. A cutter controller provided to displace the cutter radially relative to the tube and guide the cutter on a proper course about the periphery of the end face.

REFERENCES:
patent: 1858077 (1932-05-01), Douglass et al.
patent: 1858078 (1932-05-01), Douglass et al.
patent: 3900346 (1975-08-01), Muller et al.
patent: 3936714 (1976-02-01), Marshall et al.

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