Hot dip galvanizing line

الوصف

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.
Technical characteristics:
Process Method: The U.S. steel associated: hot dip galvanizing line bandwidth greater than **0mm of steel associated with the United States

 Sendzimir method: hot dip galvanizing line bandwidth of less than **0mm method used Sendzimir
Material: strip width :*******0mm, thickness :0.**1 .2 (1.5) mm
Material: cold-rolled carbon structural steel, quality carbon structural steel and low alloy steel volume,
SPCC, SPCD, FH, meet GB*******1
Coating Status: Normal spangle, small spangle, spangle finishing.
Coating Weight: GI: meet the standard GB/T******8
Coating thickness range (double): *****0 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/T********4 standards

Second, the production line main features:

1, can use without oxidation (NOF) and radiation heating tube (RTF) techniques, fast heating, high thermal efficiency.

2, according to user requirements set or cancel the strip cleaning section.

3, furnace cooling protection gas circulation by strip spray cooling, and by using the frequency conversion adjustment, strip steel cooling speed is quick and are well, can precisely control the zinc pot strip temperature.

4, spraying flow ceramic induction zinc pot, heat fast, temperature uniformity, long service life and zinc slag less, etc. 5, the coating thickness measuring instrument can real-time monitoring and feedback coating the actual weight, guide the air blade adjustment (or achieve closed loop control).

6, the two curved by a or two by two, bending machine, which can effectively improve by plate shape and surface quality.

7 and set light overall, can enhance product surface quality, improve product coating sex and cold blunt performance.

8, the electrostatic coating machine, oil of thin strip with oil.

9, the recovery of waste heat from waste gas technology, improving the utilization rate of heat energy, reduce the unit operation cost.

*0, according to the needs of user, CPC, EPC can choose import equipment, to ensure the stable production units.

*1, using ac conversion and speed governing drive control system, man-machine interface is good, equipment maintenance and simple.

Three, technological process:

Cold strip continuous annealing galvanized unit, set annealing reduction, galvanized, light the whole, pull to pose, passive/fingerprint resistant coating and function section.