Lei Wang Netherlands Netherlands Network features Network _ [] _ ??Dutch network provided by Lei Wang Netherlands network. We are Ray Wang Anping Wire Mesh Products Co., Ltd. (www.apleiwang.com/) here: Hebei Hengshui specializes in: Dutch network, wave net, dip net the Netherlands, the Dutch architectural mesh Products Netcom often also called " welded mesh, "" welded wire mesh ", which is 80 years from the last century, Taiyuan Steel mesh production line in France to introduce Netherlands Netherlands Network, steel rolling plant in Nanjing after the introduction of a production line from Austria, followed by Shanghai, Shenzhen, Shandong, Ma On Shan, Heshan, Tianjin, Beijing, An equally have gradually established a welded wire mesh factory. The current production of various types of Dutch network of more than 300 manufacturers, the annual production capacity of over 5,000 tons. Technical requirements of steel welded wire mesh. Dutch network technical regulations prescribed, welded mesh should adopt LL550 grade cold-rolled ribbed steel mesh wholesale produce Netherlands, also can LG510 grade cold rolled smooth steel production. A Dutch network should adopt the same type of steel welded. Welded mesh according to the shape, size and customization into two kinds of stereotypes. Netherlands Network stereotypes reinforced in both directions can be different spacing and diameter Dutch network specifications, but reinforced in the same direction, should have the same diameter, spacing and length has been specified in the relevant standards, Statutes. Netherlands Network customized shapes, sizes should be based on the design and construction requirements, combined with the specific project circumstances, negotiated by both parties. Dutch steel mesh diameter 4-14mm, which can be used to upgrade 0.5mm diameter. Consider the conditions of transport, the Netherlands network length should not exceed 12m, the width should not exceed 3.4m. Dutch steel mesh production direction (or longitudinal reinforcement) spacing appropriate for the 100,150,200 mm, in the other direction reinforcement spacing is generally 100,150,200,300 mm, sometimes up to 400mm. When the Dutch network of vertical and horizontal steel reinforcement Netherlands are single network features, smaller nominal diameter steel bars should not be less than the nominal diameter thick reinforced 0.6 times that dmin ≥ 0.6damx. Shear strength of solder joints Netherlands network (in N) shall be not less than 150 reinforced with thicker nominal cross-sectional area (in mm2) of the product. Netherlands mesh welding process and solve the problems on the method weldment temperature changes and distribution of the weld metal zone steady state began to be paid to withstand large high temperature heating, and then gradually cooled to room temperature, such a thermal cycle. Reason: welding current is too large, the arc is too long, due to improper welding angle. Preventive measures: reduce the structural stiffness, preheat, reduced alloying, selection of good crack resistance and other low-hydrogen electrodes. . 2. The main drawback Dutch network of welded joints (1) lack of penetration welded joints incomplete penetration is not completely root penetration phenomenon. Prevention measures: a) drying rod, carefully clean the surface and near the area with solder weldments; b) the use of appropriate welding current, correct operation. Cause: dirty groove, electrode diameter is too large and cause improper operation. 3. Microstructure and properties of welded joint changes (in low carbon steel for example) (6) is not fused incompletely melted Not fusion bonding between the base metal and the weld phenomenon. Precautions: a) low hydrogen type electrode and drying, remove oil and rust weldment surface; b) preheat and post-weld heat treatment. b) weld cracking cold cracking of welded joints produced when cooled to low temperatures. Reason: bevel angle or gap is too small, blunt edge is too thick, dirty groove, welding too thick, too fast welding speed, welding current is too small, and improper operation caused. (4) vent hole when the weld pool solidified when the bubbles could not escape the weld while leaving the cavity formed. (5) is undercut grooves or recesses undercut phenomenon along the weld toe portion of the base material produced. (3) Solder crack a) Thermal cracking is a thermal cracking of the welding process, the welding joint is cooled to a metal solidus temperature near the weld region generating cracks. Precautions: a) Carefully clean the surface with solder; while b) multi-layer welding slag thoroughly between layers;