Device and method for testing fire resistance of welding protective mask

Abstract

The invention discloses a device for testing fire resistance of a welding protective mask. The device comprises a burning rack; the burning rack is provided with a combustion apparatus and a measurement device; the burning rack comprises a burning base and a burning support frame; the burning support frame is vertically arranged on the burning base; the combustion apparatus comprises a combustor,an ignition device, a fire extinguishing apparatus, a touch ignition switch and a combustion base; the fire extinguishing apparatus is arranged on the combustion base; the combustor is arranged in thefire extinguishing apparatus; the ignition device is arranged at one side of the combustion base, and the igniting end of the ignition device passes through the fire extinguishing apparatus and is arranged corresponding to the ignited end of the combustor on the same horizontal plane; the touch ignition switch is arranged on the combustion base and is in point connection with the ignition device;the measurement device comprises a measuring ruler, a measuring head and a measurement mounting clip for installing a measured piece; the measuring ruler is arranged on the burning support frame by means of the measurement mounting clip; the measuring head sleeves the measuring ruler. The device for testing the fire resistance of the welding protective mask is simple in structure and convenient to assembly, and can accurately measure the fire resistance of the mask.

Description

technical field [0001] The invention relates to the technical field of flame retardancy testing of masks, in particular, the invention relates to a flame retardancy testing device and method for welding protective masks. Background technique [0002] The electric welding mask is a safety protection product for protecting the face of personnel in electric welding, metal cutting, and welding and cutting operations. Wearing a suitable electric welding mask can avoid the damage of ultraviolet rays or infrared rays and strong welding light to the human eye, and can prevent metal spatter at the same time. Such as foreign matter on the face, and some high-tech welding face shields are matched with gas masks, which can also reduce the damage of toxic and harmful gases to the respiratory tract. [0003] During the welding process, due to the high temperature of foreign matter such as welding metal spatter, if the flame retardancy of the welding mask is not good, the plastic parts of ...

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Problems solved by technology

[0003] During the welding process, due to the high temperature of foreign matter such as welding metal spatter, if the flame retardancy of the welding mask is not good, the plastic parts of the mask are easy to catch fire and cause a safety accident.

For this reason, it is very important to test the flame retardancy of electric welding masks. The existing flame retardancy test of masks generally uses a simple iron stand directly, and the test piece is directly set at one end of the iron stand, and then the test piece is ignited. Remove the igniter, start timing for 1 minute, then extinguish the tested piece, and finally calculate the burning length with a ruler, and calculate the burning value. Such an operation method has inaccurate detection data and is easily affected by the external environment, so it is necessary to carry out Improve

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