Patent ID: 8809723
Filing Date: 2014-08-19
Classification: B23K

Abstract:
1. A gas lens for a WIG/TIG welding torch with a gas nozzle, the gas lens having: a base body having: at least one gas-lens filter in the gas-distribution channel, an insertion element positioned within the gas-distribution channel and having a center, a bore in the center, and pleated fan-shaped flow elements arranged around the bore to form channels between the individual pleated fan-shaped flow elements, a non-consumable electrode being able to be guided through the bore of the insertion element, the pleated fan-shaped flow elements being twisted relative to a plane of the bore of the insertion element so as to provide for radial deviation and rotation of a gas flowing through the channels between the individual pleated fan-shaped flow elements, wherein each pleated fan-shaped flow element extends from a radial outward edge of the insertion element and is defined by at least one respective radial incision extending from the radial outward edge of the insertion element, the at least one respective radial incision defining a respective flow path for the gas, wherein the at least one gas-lens filter is arranged downstream of the insertion element, seen in an outflow direction of the gas to form a cavity between the at least one gas-lens filter and the insertion element, and wherein the pleated fan-shaped flow elements cause the gas leaving the insertion element to rotate in the cavity between the insertion element and the at least one gas-lens filter.