The use of spring in a specific environment, there will be some special requirements for steel wire, such as: the use of spring in corrosive media, must have good corrosion resistance function. Precision instruments used in the spring, should have long-term stability and sensitivity, temperature coefficient to be low, high quality elements, after effect to be small, elastic modulus to be stable.
If the coating roughness is not caused by the above reasons, it may be caused by impurities in the plating solution. Can take a small amount of electroplating solution, after filtration test, then take a small amount of electroplating solution, after zinc powder treatment test, check the problem is caused by solid particles or copper, lead and other foreign metal impurities. Test them one by one and it’s not hard to find the cause of the problem. Galvanized iron wire coating foaming, binding force is not good.
Large coil galvanized wire in the zinc immersion distance debugging, keep the original speed unchanged, according to t= KD to determine the zinc immersion time (1), where: t is the zinc immersion time is constant, take 4-7D is the diameter of steel wire mm, and then estimate the zinc immersion distance. By adjusting the zinc dip distance, the zinc dip time of steel wire of various specifications can be shortened by 5s on average. In this way, the zinc consumption per ton of steel wire decreases from 61kg to 59.4kg.
Pet cage is generally made of high quality iron wire, low carbon steel wire, stainless steel wire welding, which is characterized by beautiful, lightweight, folding, easy to store. The surface treatment of pet cage is generally: cold galvanized, hot galvanized, spray, dip, chromium plating, nickel plating and other methods.
Pet cage from the use of material can be divided into plastic, wire, wire square tube, stainless steel four. General small animal cage multi-purpose is plastic and wire material, such as a lot of hamster cage, chinchilla cage are made of plastic or wire, small aquarium is plastic products, and the vast majority of small and medium-sized bird cage are wire products. The characteristics of this kind of small animal cage, is small, light, easy to carry, but also easy to clean care. For small animal cages, the wire diameter of the general iron wire is not very large, the thickness of the plastic is relatively thin, so the use of the time can not be “violent”, or the cage under the “destruction” will occur welding or plastic crack off.
Iron products are common metal products in life. Iron products appear everywhere in our life, but there is a big problem in using iron products. Iron products will rust, and when rust occurs, it will affect the use and appearance of iron products. Adding non-metallic coating: clean, dry and coat the surface of iron and steel products with a layer of protective materials, such as oil, mineral grease, rust-proof grease, plastic and lacquer.
(1) The application method of packaging and binding galvanized shaft wire ordering: ① the pulling position on the goods should be reasonably selected. When used to avoid horizontal movement of goods, the pulling position should be as low as possible; When used to avoid overturning the goods, the pulling position can be appropriately high. ② The use of galvanized iron wire [1] pull reinforcement methods mainly include: figure eight, inverted figure eight, cross, zigzag or reverse zigzag and so on. Various pull methods can be used alone, but also two or more than two kinds of use. The pull should be as symmetrical as possible. (3) When pulling reinforcement, the single or double strands of galvanized iron wire will reciprocate around the goods and vehicles between the two tying nodes, and should be pulled tight galvanized iron wire so that the tightness of each strand is as common as possible, and some of the remaining cross around its own rope rod, and the rest of the tail toward the car.
That said, it can always deform by pulling hard without changing its integrity, so cold drawing has usually reached a limit, which is not a problem, because without this property it increases hardness, which is the desired effect. Cold wire drawing encountered more rain, when the climate is wet, easy oxidation and rust. Therefore, in the storage process should pay attention to avoid rust.
The material of steel structure will affect the organization and thickness of hot dip galvanized film. For example, high tension steel containing silicon, carbon content is high, easy to react with molten zinc quickly, the result of excessive growth of alloying, will cause a grayish black appearance, but does not affect its corrosion resistance. Or heat treated steel, if its tensile strength exceeds 90kg/mm2, after hot dip operation, easy to reduce its strength, etc.