WIRE WEB MESH Russian patent published in 2022 - IPC E04H17/02 G01N17/02 B21F27/00 

FIELD: protection equipment.

SUBSTANCE: invention relates to a protective mesh web. The protective mesh web has at least two mesh elements engaged with each other, at least one of which is made in the form of an elongated element including at least one separate wire, a wire harness, a wire strand and/or a wire rope, with at least one wire at least partially consisting of high-strength steel and having at least one layer of anti-corrosion protection. Moreover, the mesh element has a shape of a flattened helix with a sequence of alternating arms and bending points, wherein bending points are connected respectively by two arms, between which a bending angle is enclosed at the bending point. At the same time, at least one section consisting of wire of wire weave with the layer of corrosion protection, when tested by climatic changes, has corrosion resistance of more than 1680 hours. Moreover, the test by climatic changes is carried out in a test chamber with strict control of conditions in its inner part during the test and strict adherence to set values in the course of temperature changes, relative humidity, and periods of aerosol irrigation with salt mist. A test cycle of the test by climatic changes is divided into seven parts of the cycle, and it lasts one week, wherein each part of the cycle lasts one day. In this case, the test cycle includes three different test sub-cycles forming corresponding parts of the cycle and including at least one cycle A, at least one cycle B, and at least one cycle C, wherein, during the test cycle, test sub-cycles are performed in turn in the following sequence: cycle B, cycle A, cycle C, cycle A, cycle B, cycle B, cycle A. The cycle A contains a salt-spraying phase, in which a salt solution consisting of a sodium chloride solution in distilled water having electrical conductivity of no more than 20 mcSm/cm at (25±2)°C is sprayed within the test chamber, at a mass concentration in the range of (10±1) g/l, wherein the temperature during spraying of salt mist within the test chamber is (35±0.5)°C. The cycle B contains a working phase, during which the temperature is maintained at a room temperature (25°C), and relative humidity of air is maintained at a level of typical room relative humidity (70%). The cycle C contains a freezing phase, in which the temperature of the test chamber is maintained at a value below 0°C. A protective mesh made of such a web, a method for the manufacture of a protective mesh of such a web, and wire weaving containing such a web are also described.

EFFECT: creation of a web with high durability.

15 cl, 21 dwg