초록 ▼

A "hot start" method for arc welding includes selecting a first weld current, setting a time interval, striking an arc, flowing a second, higher weld current through the welding rod and then, after a brief time interval, reducing the current through the rod to the value of the first weld current. Al

A "hot start" method for arc welding includes selecting a first weld current, setting a time interval, striking an arc, flowing a second, higher weld current through the welding rod and then, after a brief time interval, reducing the current through the rod to the value of the first weld current. Also disclosed is a new arc welder stator having two groups of slots around a core. The group of larger slots contains the weld current windings and slots in the group of smaller slots contain windings for timing, gate voltage, battery charging, auxiliary power and the like. A new cooling apparatus for an arc welder has an air duct and a "double-bladed" fan for flowing air along several paths and cooling both the welder control section and the generating section. A new method for electronically controlling engine speed in an engine-driven arc welder is also disclosed. Such method includes manipulating a current-selecting device, contacting a work piece with a welding rod, accelerating the engine to an elevated speed and then either maintaining such speed or reducing it, depending upon the value of weld current selected.

대표청구항 ▼

[ What is claimed:] [1.] A method for arc welding a work piece including, in either order, the steps of:selecting a first weld current;setting a time interval; further including the steps of:striking an arc by manually contacting a holder-secured rigid welding rod to the work piece;flowing a second

[ What is claimed:] [1.] A method for arc welding a work piece including, in either order, the steps of:selecting a first weld current;setting a time interval; further including the steps of:striking an arc by manually contacting a holder-secured rigid welding rod to the work piece;flowing a second weld current through the welding rod, the second weld current being a predetermined percentage of the first weld current; andreducing, upon the lapse of the time interval, the current through the rod to the value of the first weld current.