Welding mask for labor insurance products:
The welding protective mask is composed of observation window, filter, protective sheet and mask, and the product should meet the requirements of "Welded Eye Protective Equipment" (GB/T 3609.1-1994).
1. Classification According to the General Technical Conditions of Eye Protectors (GB 14866-1993), the welding mask is divided into hand-held HM-1, headband type HM-2-A, helmet and mask connection type HM-3-A , helmet type HM-4 type.
2, product technical requirements a. welding eye protector materials, such parts of labor insurance products should have a certain strength, elasticity and rigidity; can not be made of materials harmful to the skin or flammable; eye mask headband materials should be Soft and durable.
b. Welding mask materials These labor protection products must be made of non-conductive materials that are resistant to high and low temperatures, corrosion, moisture, flame retardant, and have a certain strength and opacity.
c. Welding mask and eye protector structure Rivets and other components should be firm, no looseness, metal parts can not be in contact with the face; pick up parts must be flexible and reliable; smooth surface, no burrs, no sharp angles or may cause eye and face discomfort Other defects; adjustable parts should be flexible and reliable, structural parts are easy to replace; should have good gas permeability.
d. Mask quality and specifications The quality of the mask should not exceed 500g for accessories such as lenses and helmets. The specifications for all types of welding masks are as follows:
| product name | length | width | depth | Observation window |
| Handheld HM-1 | ≥320 | ≥210 | ≥100 | ≥40×90 |
| Head-mounted HM-2-A | ≥340 | ≥210 | >120 | ≥40×90 |
| Safety helmet and cover connection type HM-3-A | 100±0.5 | ≥40×90 | ||
| Helmet type HM-4 | 100±0.5 | ≥40×90 |
e. The filter and protective sheet performance requirements of this labor protection product include surface quality and internal defects, visible light transmittance of protective sheet, filter color, filter transmittance, diopter deviation, parallelism and strength properties, etc. Safety glasses are required to be consistent.
f. Flame retardant performance of the mask material The burning speed of the mask material must be less than 76mm/min, and the plastic material needs to be self-extinguishing within 5s of the fire source.
PS: Zhong Xintai reminds you that the welding mask should be used together with the welder's safety shoes and welder gloves to maximize the protection effect.
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