High-strength steel mesh for use in concrete and its making method

Abstract

It relates to the high intensity metal mesh for reinforcing the cement or pitch concretes in civil engineering and construction. It is made of several pieces, rows or plies of high intensity high carbon steel wire crossing horizontally and vertically with preheating in temperature 200-300DEG C, welding using electric resistance welding within 0.04-0.2 seconds and tempering with the welding temperature 1400- 1600DEG C, after welding temperature 500-700DEG C, maintaining the temperature within 0.3-2 seconds. Having strong tensile strength and shearing force at the joint, fine overall performance, stability, simple process, it can satisfy mass production requirement with reduced consumption of steels, quick operating speed, and lowered cost.

Description

technical field [0001] The invention relates to a high-strength steel wire mesh mainly used for reinforcing cement concrete or asphalt concrete in various civil engineering and construction projects, and a manufacturing method of the high-strength steel wire mesh. Background technique [0002] High-strength steel wire mesh for concrete is mainly used as asphalt concrete or cement concrete reinforcement mesh for various civil engineering and construction projects. One or more layers can be placed at different positions of the concrete to meet the anti-crack performance and bending resistance of the project. It can also be used as protection, support, reinforcement and isolation nets for civil engineering, construction and civil engineering. [0003] With the rapid development of economic construction, the construction requirements of various civil engineering and construction projects are getting higher and higher, and the technical requirements for concrete, which plays a ke...

AI Technical Summary

Problems solved by technology

At present, geogrids are mainly used for concrete. Since the surface of geogrids is covered with a layer of polymer materials, the affinity and grip with concrete are greatly weakened, which seriously affects its use in concrete. Ordinary carbon steel bars are also used to make steel mesh. In order to make concrete have higher crack resistance, bending resistance, bearing capacity and service life, thicker steel bars have to be welded or bound into steel mesh.

However, it brings great inconvenience to production and laying. If factory production is adopted, it will bring difficulties to transportation, and only small-scale and small-area steel mesh can be produced, which will cause trouble to laying; if on-site production is adopted, a lot of manpower will be wasted. , material resources, and the production period is long, it is bound to extend the project period

In addition, the use of ordinary carbon steel reinforcement requires a large amount of steel, resulting in a large waste of steel and increasing the cost of the project.

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