Galvanized welding net is widely used in industrial production, agriculture, engineering construction, transportation, mining and other processing and manufacturing industries. Such as machine equipment protective cover, animal guardrail, potted flower guardrail, window guard bar, safety exit guardrail, poultry cage, egg basket and home office food industry basket, paper basket and design decoration. Suitable for general engineering building wall, pouring concrete, multi-storey building, etc., in the structure of heat preservation and heat insulation system plays an important role, when the construction will be hot dip galvanized welded wire rack together wall of heat preservation and heat insulation board placement will be concrete pouring mold inside, outside the wall heat preservation and heat insulation board and one kind of live, after ripping into heat preservation and heat insulation board and wall body.
Galvanized welding net pressure coated on the surface of the core coating is called drug skin. The coating of electrode plays an important role in welding process. If the bare electrode welding without drug skin, in the welding process, oxygen and nitrogen in the air will invade a large number of molten metal, metal iron and beneficial elements carbon, silicon, manganese and other oxidation and nitride to form a variety of oxides and nitride, and residual in the weld, resulting in welding seam slag or crack. And the gas in the molten pool may cause a large number of pores in the weld, which can greatly reduce the mechanical properties of the weld and make the weld brittle.
Under the condition of the same amount of reinforcement, it takes about 4 man-hours for 1000kg welding net to be laid in single layer, more than 6 man-hours for double layer net and 22 man-hours for two manual bundling, which can save about 50P % labor compared with manual bundling. Enhance concrete crack resistance: artificial steel wire binding intersection easy to slide, steel and concrete binding force is weak, easy to produce cracks, and welding net solder joints can not only withstand pressure, but also can withstand shear force. The network structure formed by longitudes and longitudes plays a role of bonding and anchoring. When the galvanized welding net adopts smaller diameter and more dense spacing, the increase of welding points per unit area can enhance the crack resistance of concrete and reduce the occurrence of cracks by more than 75%.
Post time: 20-01-22