ROTARY TYPE NOZZLE FOR WELDING

PURPOSE:To improve the durability of a rotary type nozzle for welding by forming the nozzle of a silicon nitride sintered body. CONSTITUTION:A sintered assistant and binder such as paraffin are added to Si3N4 powder having 0.5-1mum average grain size and a bar-shaped body is molded by a high-pressur...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	KANEHARA TOSHIO, AOKI KIYOSHI
Format:	Patent
Sprache:	eng
Schlagworte:	CLADDING OR PLATING BY SOLDERING OR WELDING CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR PERFORMING OPERATIONS SOLDERING OR UNSOLDERING TRANSPORTING WELDING WORKING BY LASER BEAM
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	PURPOSE:To improve the durability of a rotary type nozzle for welding by forming the nozzle of a silicon nitride sintered body. CONSTITUTION:A sintered assistant and binder such as paraffin are added to Si3N4 powder having 0.5-1mum average grain size and a bar-shaped body is molded by a high-pressure rubber press method, etc. Such bar-shaped body is provided internally with apertures 1c, 1d by machining and is bored with an insertion hole 1a for a W electrode and a hole 1b for introducing a shielding gas so that the bisected nozzles 1 are formed. The nozzles 1 are fixed to the inside peripheral surface of an outer ring 2 and a motor 4 is driven to rotate the ring 2a, by which the welding of a joint 5 and a piping 6 is executed. Since the nozzle 1 is constituted of the sintered Si3N4 body, the nozzle is extremely highly resistant to heat, thermal impact and wear. The durability of the nozzle 1 is thus improved.