made in China Wire Mesh Common Terms

made in China Wire Mesh Common Terms

Crack: Longitudinal cracks, fissures, and splits that appear on the surface of steel wire.

　　Cracks (burrs): Small horizontal cracks visible to the naked eye appear on the surface of the steel wire, presenting tongue-shaped or other shaped burrs

　　Delamination: Partial or full-length splitting of the steel wire

　　Scarring (spot scar): yellow oxidation scars and white lime scars appearing on the surface of the steel wire

　　Tension marks: Obvious small grooves or ridges on the surface of the steel wire longitudinally. Minor ones only make the surface appear rough and shiny.

　　Fold: Metal overlap along the length of the wire surface. It is usually straight, but also curved or zigzag. When metallographically inspected, the fold usually contains iron oxide inclusions and decarburized layers.

　　Concave surface: Local depression on the surface of the wire.

　　Rust: Local and overall oxidation occurs on the surface of the steel wire.

　　Pit: Point-shaped or sheet-shaped pits that appear on the surface of steel wire when it is severely oxidized.

　　Bamboo joint: The steel wire is uneven in thickness periodically along the longitudinal direction, and its shape is beautiful like a bamboo joint.

　　Spiral mark: The spiral roller mark that appears on the surface of the steel wire during the straightening process.

　　Oxide scale: Oxidation occurs when the surface of the steel wire comes into contact with high temperature oxidizing furnace gases, forming a hard, brittle oxide layer.

　　Oxide film: A thin layer of dense oxide is formed on the surface of the steel wire. This oxide is generally not easy to break and can only be partially peeled off when it is bent or deformed.

　　Oxidation color: Under the condition of bright heat treatment, a very thin layer of oxide is generated on the surface of the steel wire, which is tightly attached to the surface of the steel wire.

　　Decarburization layer: When the steel wire is heated, due to the action of the gas medium and the carbon in the steel layer, the area where the carbon content on the surface is reduced is called decarburization.

　　Graphite carbon: Part or all of the carbon in the steel is precipitated in a free state. This carbon in a free state is called graphite carbon.

　　Crease: A local fold on the mesh surface, forming an irreversible mark.

　　Holes: There are multiple broken threads in the warp or weft on the mesh.

　　Rust: Corrosion and deterioration on the mesh surface.

　　Rust spots: small spots of green, brown or different colors appear on the mesh surface.

　　Broken wire: The warp or weft threads on the mesh are either broken or missing.

　　Mosquito mouth: Loop the metal wire, twist it into a knot, and leave a space for the mesh.

　　Top buckle: The warp joint is poor and pushes out of the mesh surface.

　　Weft shrinkage: The weft line is partially bent and the mesh is deformed.

　　Parallel wire: two or more metal wires woven together in parallel.

　　Skipped thread (jumped shuttle): The warp or weft threads are interwoven incorrectly.

　　Loose threads: individual warp or weft threads are loose and displaced.

　　Woven-in debris: foreign matter is woven into the net.

　　Cloud weaving: The weft is too soft or unevenly soft, resulting in an irregular cloud-like network pattern.

　　Bulge: Regional bulging of the mesh surface.

　　Double lines: The warp or weft lines overlap.

　　Hole size: The mesh holes on the mesh surface are irregular in size.

　　Dense or sparse: Some mesh holes on the mesh surface are suddenly too large or too small.

　　Loose edge: The edge of the net is wavy and bulging.

　　Wire diameter - the diameter of the wire;

　　Warp - all the longitudinal weaving threads;

　　Weft - all the horizontal weaving threads;

　　Mesh size - the number of mesh holes in 1 inch length;

　　Density - the number of mesh holes in 1 cm length

　　Mesh - the distance between two warp or weft threads

　　Tolerance - When the heald is flat, the vertical distance between the warp line at the heald and the tolerance line (MM)

　　Public line - the line connecting the front and rear breasts (rollers)

　　Upper tolerance: the warp line at the heald piece during heald normal operation is higher than the tolerance line

　　Lower tolerance - below the tolerance line is called lower tolerance

　　Zero tolerance - Coincidence with the tolerance line is called zero tolerance

　　Heald angle - the distance between the upper and lower healds after the heald frame is opened

　　Flat angle - (angle change time) - the distance between the reed and the long latitude point when the comprehensive flat state