Systems, methods, and apparatus to preheat welding wire
AssigneeIllinois Tool Works Inc.
InventorsJames Uecker, Jake Zwayer
Life of this patent
Estimating the term…
Abstract
An example contact tip for a welding torch includes: a first body section having a first diameter and exterior threads, the first body section having channels extending longitudinally along an exterior surface of the first body section to permit gas flow from a first end of the contact tip to a second end of the contact tip through the channels; a first bore portion having a first inner diameter; and a second bore portion having a second inner diameter configured to contact an electrode wire traveling through the second bore portion, the first inner diameter being larger than the second inner diameter.
Claims17
A wire preheating assembly, comprising:
- a first electrical contact configured to contact an electrode wire over a first contact length of the first electrical contact;
- and
- a second electrical contact configured to contact the electrode wire over a second contact length of the second electrical contact;
- wherein a ratio of the first contact length to a distance between the first and second contact lengths is greater than 0 and less than or equal to 1.
A contact tip assembly for a welding torch, the contact tip assembly comprising:
- a first contact tip configured to contact an electrode wire over a first contact length of the first contact tip;
- and
- a second contact tip configured to contact the electrode wire over a second contact length of the second contact tip;
- wherein a ratio of the second contact length to the distance between the first and second contact lengths is greater than 0 and less than or equal to 1.
A consumable electrode-fed welding-type system, comprising:
- a welding-type power source configured to provide welding-type current to a welding-type circuit, the welding-type circuit comprising a welding-type electrode and a first electrical contact configured to contact an electrode wire over a first contact length of the first electrical contact;
- an electrode preheating circuit configured to provide preheating current through a first portion of the welding-type electrode via a second electrical contact configured to contact the electrode wire over a second contact length of the second electrical contact;
- and
- electrode preheat control circuitry configured to control the electrode preheating circuit, wherein a ratio of the second contact length to the distance between the first and second contact lengths is greater than 0 and less than or equal to 1.
A consumable electrode-fed welding-type system, comprising:
- a welding-type power source configured to provide welding-type current to a welding-type circuit, the welding-type circuit comprising a welding-type electrode and a first electrical contact configured to contact an electrode wire over a first contact length of the first electrical contact;
- an electrode preheating circuit configured to provide preheating current through a first portion of the welding-type electrode via a second electrical contact configured to contact the electrode wire over a second contact length of the second electrical contact;
- and
- electrode preheat control circuitry configured to control a preheating voltage of the electrode preheating circuit, wherein a ratio of the first contact length to the distance between the first and second contact lengths is greater than 0 and less than or equal to 1.
Dependencies are inferred from the claim text.