If the zinc coating is good, but in 3% nitric acid when the light, the coating has dark shadow, passivation occurs when the film is brown, may be caused by foreign metal impurities such as copper or lead in the galvanizing liquid. When problems occur in the process of galvanizing large coil galvanized wire, the temperature and current density are checked first, and then the content of zinc and sodium hydroxide in the plating solution is measured and adjusted through the analysis of the plating solution. Whether DPE content is low can be determined by hull cell test.
- Birdcage is the main environment for watching birds to carry out activities and roosts, “work to do a good job, must first improve its tools”, the applicability of bird equipment, is one of the keys to raising birds well. Therefore, only equipped with appropriate cage and other accessories, birds can be healthy and lively, singing freely, suitable for viewing.
1, galvanized silk mesh molding sheet must be packed with flat hard materials, to avoid improper packaging and cause eternal deformation. It is important that each package and roll of raw material be marked with product name, standard, quantity, trademark, lot number, manufacturer, date of production, packing symbol, inspector code and inspection certificate.
With the improvement of people’s living standards, now many families are raising some small pets, these small pets need a safe nest, pet cage has become a more important choice of people, each pet’s habits and living habits will choose to adapt to the cage.
- 4. Rinse the foam off your cat thoroughly.
Post time: 29-08-22- Powder coating color is divided into: blade thorn rope blue, grass green, dark green, yellow. Spray blade gill net is made of hot-dip galvanized steel plate or stainless steel sheet stamped out of sharp knife sheet, high tension galvanized steel wire or stainless steel wire as core wire combination of blocking devices. Because the shape of the thorn rope is not easy to contact, so it can reach excellent protective barrier effect. The primary raw materials of products are galvanized sheet, stainless steel plate, high quality low carbon steel wire (electric galvanized, hot galvanized, coated plastic, plastic spray) wire, blue, green, yellow and other colors.
- 2, galvanized silk mesh molding sheet storage ground should be flat, according to the symbolic needs of regular accumulation, height should not exceed 2M, and away from the heat source, avoid exposure.
- Performance characteristics of zinc coating: zinc layer of thick galvanized wire zinc layer crystallinity meticulous, uniform and no gap, good corrosion resistance; The zinc layer obtained by electrogalvanizing is very pure and corrodes slowly in the gas, liquid and fog of acid and alkali, which can effectively protect the steel matrix. Galvanized layer can also be chromic acid passivation treatment into a variety of colors, beautiful and generous, with good decorative; The zinc layer on the galvanized wire has good ductility, can be cold blanking, rolling, bending and other molding without damage to the zinc layer.
The formation process of hot dip galvanized layer is the process of forming iron-zinc alloy between the iron matrix and the outside pure zinc layer. The surface of the workpiece forms the iron-zinc alloy layer during the hot dip plating, so that the iron and pure zinc layer is well combined. The process of large roll galvanized wire can be simply described as: when the iron workpiece is immersed in the molten zinc solution, the first zinc and α-iron (body-centered) solid melt is formed on the interface. This is a crystal formed by the matrix metal iron dissolved with zinc atoms in the solid state. The two metal atoms are fused with each other, and the gravitational attraction between the atoms is relatively small.
- How much does a spike rope weigh in a meter? In fact, after figuring out how many meters a kilogram of barbed rope, this problem will be solved, and it is OK to divide a kilogram directly by the number of meters.
- 3, barbed rope protection net in the bridge, channel, should be toward the bridge head cone slope (or end wall) direction surrounded, should not leave for people, livestock can drill into the gap.
Different from common zinc barbed rope, high zinc barbed rope surface zinc content is very high can reach 6-8 times of the former, so there is a great advantage in the service life, ordinary products begin to corrosion three to five years while the latter will take longer to change. Stainless steel barbed rope is in material protection so durability is also better, these two products are long service life, but in terms of high price.
- The acceptance of cold-drawn low carbon steel wire shall be conducted according to the same production unit, the same raw material, the same diameter, and shall not exceed 30T for an inspection lot, and check the base material into the factory or out of the inspection statement. The inspection items for each inspection lot are appearance quality, diameter error, tensile test (including tensile strength and elongation) and repeated bending test.
Good galvanized wire, plating thickness of 3- 4 mm, zinc adhesion should be less than 460 grams/m, that is, the average thickness of zinc layer is not less than 65 microns. When the thickness of plated parts is greater than 4 mm, the zinc adhesion should not be less than 610 g/m, that is, the average thickness of zinc layer should not be less than 86 microns. Standard galvanized wire coating must be uniform, galvanized layer basically uniform with copper sulfate solution test etching five times no dew iron. For standard galvanized wire coating adhesion requirements, the zinc layer of plated parts should be firmly combined with the basic metal and have enough adhesion strength, after hammer test does not fall off, not convex.
Post time: 05-05-23- Third, positive and negative twisting barbed rope appearance is beautiful
Post time: 19-04-23
Post time: 16-02-23- The above is Xiaobian for you to introduce the characteristics of spray blade rope. The mechanical strength, adhesion, corrosion resistance and aging resistance of the spray blade are widely used.
- The strength of the hook net should be satisfactory: when the vehicle is traveling at 80 km/h, the hook net will not fall into the river when it bumps against the railings at a 15 degree Angle. The shape and color of the hook mesh should be in harmony with the surrounding natural environment. The phenomenon planning of important Bridges should be done well.
Post time: 24-04-23Stainless steel wire is characterized by good corrosion, in chemical plants or pharmaceutical industry can often be used to stainless steel wire, suitable for acid, alkali environment. Aluminum alloy wire is characterized by high temperature, can adhere to the high temperature of more than 100 degrees Celsius does not fade, and has good corrosion, patience is also very good. It can be used for device manufacturing in construction industry.
The reason why there are black spots in wire mesh welding is that the action of wire feeding should be timely filled in the melting time, and the development should be appropriate. There is no argon gas, long burning, large current, long distance, blunt tungsten needle and high molten pool temperature are the fundamental reasons for blackening. Continuous burning, is about active welding machine energy selection, machine welding will appear black spots.
Post time: 10-04-23