News
On the technical requirements of steel mesh wire mesh machine
Date:17-04-28, 02:51 AM
Source:
Author:
On the technical requirements of steel mesh wire mesh machine
Steel mesh wire mesh machine in China's application is still in its infancy, the current application of the total amount of steel used in the proportion of less than one-tenth. In the early 90s of the 20th century, steel mesh welded wire mesh was only the State Science and Technology Commission, the Ministry of Construction as a key to promote the project, and developed a national standard, procedures. In recent years, China's infrastructure development is very fast, the country's investment in infrastructure construction continued to grow; the implementation of the western development strategy. The national economic construction into a new stage, energy, transportation, water conservancy, housing and municipal engineering and other basic construction of the demand for steel mesh wire mesh machine will be doubled. Its market application prospects are very broad; steel mesh wire mesh machine for factory, large-scale production, is the high efficiency, in line with environmental protection requirements, to adapt to the development trend of the construction industry of emerging industries.
Technical rules, steel mesh wire mesh machine should be used CRB550 cold-rolled ribbed steel production, can also be used CRB510 cold-drawn surface steel production. A welding network should use the same type of steel welded into. Welding network by shape, specifications are divided into two kinds of stereotypes and custom. The spacing and diameter of the steel bars in the two directions may be different, but the bars in the same direction should have the same diameter, spacing and length, and are specified in the relevant standards and procedures. Custom welding network shape, size should be based on design and construction requirements, combined with specific engineering conditions, determined by the supply and demand sides. Welded wire diameter of 4-14mm, which can be used 0.5mm upgrade diameter. Consider the transport conditions, the length of the welding network should not exceed 12m, the width should not exceed 3.4m.
The spacing of steel bars (or longitudinal reinforcement) in the direction of welding network of welded wire mesh is 100,150,200mm, and the spacing of other reinforcement is generally 100,150,200,300mm, sometimes up to 400mm. When the vertical and horizontal steel bars are all steel bars, the nominal diameter of the smaller bars shall be not less than 0.6 times the nominal diameter of the thicker bars, that is, dmin ≥ 0.6dam. The shear force (in N) of the welded joint shall be not less than 150 and the product of the nominal cross-sectional area (in mm2) of the thicker bar.
