SU652943A2 - Protective shield for electric welded - Google Patents

Description

This invention relates to the safety features of a welding job. According to the main author. St. No. 5О3579 is known for the electric welder's protective shield used in welding operations. This shield is made in the form of a corpus with a frame and transparent glasses, between which the light-shielding glass and the filter of perforated opaque material are fixed. A light filter made of opaque perforated material, reflecting light rays from the internal surfaces of the perforations, directs them to the welder’s eyes, which adversely reflects on the worker’s vision and reduces the productivity of the pipe. In order to eliminate the effect of reflected rays on the welder’s vision and to increase labor productivity, a matt black layer is applied to the face of the face that faces the welder’s face and to the walls of the perforations. FIG. 1 shows a protective shield, VIP side section; in fig. 2 shows the same view from the side of the welder. The electric welder's protective shield includes a housing 1 with a frame 2 and transparent glass 3 and 4, between which a light-protective stack 5 is fixed and a filter made of opaque perforated material. The surface of the perforations and the surface of the filter 1 made of opaque perforated material facing the welder’s face are covered with a matte layer 6 of black color. Using the proposed shield, the welder, before starting welding (as with the use of a shield of known construction), observes the welding object through an additional filter 1 of opaque perforated material. When an electric arc appears, the welder takes care of it and charges for welding through a light filter 7.