Galvanized steel wire is mainly formed by stretching some high quality carbon structural steel and then galvanized, it has good physical properties, so its application range is also very wide. It is made of high quality low carbon steel, after drawing, pickling and rust removal, high temperature annealing and hot galvanizing. Cooling and other processes are processed.
Hot-dip galvanizing (Hot Dip Galavnizing) was invented in the middle of the 18th century, and it was developed from the hot-dip galvanizing process. After 50 years of development, the continuous hot-dip galvanizing process for steel strips has become a mature and advanced industrial technology. So far, hot-dip galvanizing is still the most commonly used and most effective process in steel corrosion protection methods measure. In the construction industry, it is used for light steel keels, building panels, corrugated panels, rolling doors, etc. of various industrial and civil buildings; in household appliances and light industry, it is used for shells and bottom plates of various household appliances; galvanized steel sheets are widely used Used in light industry, home appliance, automobile and construction industry. In the automobile industry, it is used for the body, shell, inner panel, bottom plate, etc. of the automobile body. my country vigorously develops electric power, transportation, communications, energy and urban infrastructure. With the strong development of construction, home appliances and automobile industries
The purpose of galvanizing is to prevent the corrosion of steel objects, to improve the corrosion resistance and service life of steel, and to add a decorative appearance to products that are subject to weathering, water or soil corrosion over time. The amount of steel corroded in the country each year is almost one tenth of the total amount of steel. Therefore, in order to protect the life of steel or its parts, zinc plating is generally used to process the steel.
Equivalent Grades
| Grade |
Euronorm |
China GB |
Japanese JIS |
| No. |
| Galvanized |
EN 10346 |
DX51D+Z |
SGCC |
Standard Specification
| Diameter |
0.1mm-8.0mm |
| Length |
Customized as you wished |
| Cross-sectional shape |
Since the custom |
| ZINC |
40g 80g 100g 120g 180g 275g |
| Finish |
Drawing, welding, drilling, forging, surface treatment, slitting |
| Application |
For automobiles, solar energy, metal products, household appliances, precision electronics, sanitary ware |
Composition content
| Grade |
C |
Mn |
Si |
P |
S |
Cr |
Mo |
Ni |
N |
| DX51D+Z |
Min.
Max. |
≤0.25 |
≤0.60 |
/ |
≤0.035 |
≤0.03 |
/ |
/ |
/ |
/ |
Tensile strength :405MPa
Yield strength :245MPa
Elongation :More than 25%
Elastic modulus :29,000,000 psi is equivalent to: 203000MPa
Hardness requirement (Brinell hardness)
183 n/was (MPa).
Density :.280 LBS /cubic inch(density 7.86g/cm3)
Characteristic machining technology
About spangles:
What is spangle
Beautiful spangles are a main feature of traditional hot-dip galvanized sheets. The most complete form of zinc crystals is similar to snowflakes or hexagonal stars, so the zinc crystals obtained by condensation on the surface of the strip steel in the hot-dip process are most likely to form snowflakes or hexagonal star spangles.
In fact, spangles are only of ornamental value and have no practical value. On the contrary, spangles are not good in corrosion resistance, and the surface will appear uneven after painting. Therefore, the home appliance and automobile industries tend to choose small spangle (no spangle) products, while spangle products that look beautiful are still used in a certain amount in the construction industry.
Adding other elements to the zinc solution
When a certain alloying element is added to the zinc liquid, the crystallization process can be prolonged, and the surface zinc liquid will not solidify before reaching its eutectic temperature. Pure zinc solidifies at 419.5oC. If tin (less than 0.5%) is added, the tin-zinc eutectoid alloy will not solidify until it drops to 198oC. After adding cadmium, the cadmium-zinc eutectoid alloy will not solidify when it is not lowered to 264oC. If antimony (less than 0.3%) is added, the antimony-zinc eutectoid alloy will not solidify until it drops to 409oC. After adding lead, its lead-zinc eutectoid alloy will not condense until it drops to 317oC. ...Therefore, the solidification time of pure zinc is extended to varying degrees, which greatly prolongs the growth time of spangle crystals and facilitates the growth of spangles, so larger spangles can be obtained.
Surface Blowing Gas Method
When the pure zinc layer on the surface is about to solidify, if the steam flow or sulfur dioxide flow passes through the surface, the spangle crystals can grow smoothly, and larger patterns can be obtained. Another purpose of blowing sulfur dioxide airflow is to form a dense oxide film and improve the corrosion resistance of the galvanized layer.
![[!--title--]](/d/file/p/2023/06/galvanized-wire-1.jpg)
English
Español