1.6mm To 5.0mm Hot Dip Galvanizing Process Line High Carbon Wire 28 Heads

1.6mm to 5.0mm Low Carbon High Carbon Wire Hot Dip Galvanizing Process Line

1. Application

This hot dip galvanizing process production line is suitable for continuous annealing and hot galvanizing of low carbon steel wire. Considering that the customer has a plan to produce high carbon hot-dip galvanized steel wire in the later stage, it can also be compatible with lead bath process (high carbon wire patenting treatment), and there is no need to build a new production line.

2. Main process technical parameters

2.1 Production process flow

A) Low carbon wire hard type (850N/mm2): uncoiling--- degreasing ---hot water washing---clean water washing---pickling --- water rinsing --- fluxing --- drying --- hot galvanizing --- wiping cooling --- wire taking up.

B) Low carbon wire soft type (400N/mm2): uncoiling--- pickling --- water rinsing --- hot water washing --- fluxing--- drying ---online annealing--- hot galvanizing --- wiping cooling --- wire taking up.

C) High carbon steel wire patenting treatment: uncoiling --- heating (in the annealing furnace) --- lead bath isothermal quenching --- water cooling --- pickling --- water washing --- fluxing --- drying --- hot galvanizing --- wiping cooling --- wire taking up.

2.2 wire specification: ￠1.60---5.00mm

2.3 head number and output

According to the customer's requirements, the annual output is 8000 tons, and the hourly output is about 1500 kg based on ￠2.40mm. The linear speed is 20m/min, and the customer needs 28 heads for this hot dip galvanizing equipment.

2.4 fuel: electrical and gas combined;

2.5 zinc layer weight: 80--350 g/m²;

3. Supply Scope

4. Description to Each Unit

4.1 uncoiling stand

Rotating uncoiling stand:28 pcs;

4.2 online wire annealing furnace

4.3 Lead bath patenting isothermal heat treatment

Lead bath tank size (L,W,H): 10000*1400*500mm

Fuel: natural gas;

Temperature control range: 450-500℃;

Cooling method: water cooling and air cooling.

4.4 Pickling and water cleaning, 1 set;

4.5 fluxing tank, 1 set;

Overall dimension: 3500 * 1400 * 500mm (L,W,H);

Material: stainless steel

Heating mode: flue waste heat and auxiliary electric heating, with 30kW heating power automatic control.

4.6 drying oven

Size: 8000*1500 (L,W);

Heating method: flue wast heat;

4.7 gas zinc galvanizing furnace

·Number of heads: 28 pieces;

·Wire spacing: 40mm;

·External heating;

·Annual working time: 7500h;

·Temperature control range of hot galvanizing bath zinc liquid: 440 ℃～ 460 ℃ adjustable;

·Zinc temperature control accuracy: ± 2 ℃;

·Zinc layer thickness range: 100g~250g/㎡;

·Furnace structure: the XG08 zinc kettle is made of 50mm thick special steel plate, pressed and welded.

·Zinc furnace effective size: 6000 * 1400 * 900mm (L*W*D).

· Zinc capacity about 48t

· Heating temperature control: staged proportional control combustion；

The press roll is special ceramic fixed type, and it is to be replaced once a year.

·Lead out mode and cooling: Vertical leading out is adopted. Low carbon steel wire is wiped with asbestos block, and high carbon steel wire is wiped with charcoal+asbestos fiber+graphite chips. The cooling mode is water cooling.

4.9 wire taking up

The hot dip galvanizing equipment is equipped with 600 plum blossom upside down take-up is adopted, the power of single head traction motor is 4.0 kW, and the speed is adjusted by frequency conversion.