Hot DIP galvanizing line
Hot DIP galvanizing line is rolling again by the cold rolling mill of the coil after annealing, degreasing units entered the hot-DIP galvanized zinc pot, and used for different purposes according to finishing, chromium (chromate), Electrostatic Oiler and other process steps for further processing.

First, Technical characteristics:
Process Method: The U. S. Steel associated: Hot DIP galvanizing line bandwidth greater than 700mm of steel associated with the United States
Sendzimir method: Hot DIP galvanizing line bandwidth of less than 700mm method used Sendzimir
Material: Strip width: 600-1550mm, thickness: 0.2-1.2 (1.5) mm
Material: Cold-rolled carbon structural steel, quality carbon structural steel and low alloy steel volume,
SPCC, SPCD, FH, meet GB13237-91
Coating Status: Normal spangle, small spangle, spangle finishing.
Coating Weight: GI: Meet the standard GB/T2518-88
Coating thickness range (double): 50-300 G/M2
Control of zinc coating: Air knife
After plating treatment: Finishing, straightening, fingerprint resistant coating / passivated, oiled.
Continuous Annealing: Horizontal / vertical; Electricity, natural gas and gas heating;
Zinc pot: Zinc-frequency induction heating ceramic pot;
Light machine: Four roller, roll under the support of AC variable frequency drive;
Straightening machine: A crescent of a correction / correction of two bend one / two-turn two-straightening and elongation of 0.5 to 2.0%;
Drive Control: Siemens AC main drive vector frequency control system.
Product quality standards GI: Meet the GB/T2518-2004 standards

Second, the production line main features:
1. Can use non oxidation (NOF) and radiant tube heating (RTF) combination of technology, fast heating, high thermal efficiency.
2. According to user requirements set or cancel strip cleaning section.
3. Furnace cooling adopts protective gas strip spray cooling, and using circular frequency conditioning, strip steel cooling speed and all well, can precisely control the zinc pot strip temperature.
4. USES the streaming ceramic induction zinc pot, heat fast, temperature uniformity, long service life and zinc dreg less, etc.
5. USES the coating thickness measuring instrument can real-time monitoring and feedback coating the actual weight, guiding air blade adjustment (or realizing closed-loop control).
6. Using two curved a pose or two curved straightening machine, straightening pull two can effectively improve plate shape and surface quality.
7. Setting light overall, which can effectively improve product surface quality, improve product coating sex and cold blunt performance.
8. Adopt electrostatic greased machine, strip in thin coating of oil.
9. Using gas recovery of waste heat utilization technology, improving the operation cost and reduce the unit.
10. According to user needs, CPC, EPC can choose imported equipment, to ensure stable production crew.
11. Adopt AC frequency conversion variable speed drive control system, man-machine interface is good, equipment maintenance simple.

Three, technological process:
Cold strip continuous annealing galvanized unit, set annealing reduction, galvanization, light the whole, pull to pose and passivation/fingerprint resistant coatings as well as functional section.