One, component types

In order to meet the domestic electric power, transportation, communications and other industries of steel components development of hot-dip galvanized, in absorption, digestion domestic and foreign advanced hot galvanizing technology on the basis, development of hot dip galvanizing production line. Applicable to transmission tower, microwave towers, power of single column tower, transformer substation, power lines, highway fence, city lighting poles, marine structures, building steel structure and other components of hot dip galvanized corrosion protective coatings.

The main characteristics of the production line:

In 1, a steel component rapid rust;

In 2, the fluxing agent iron ion content of less than1G / L;

In 3, low temperature thermostatic hot dip;

In 4, no emission of low chromium passivation;

In 5, save the consumption of zinc technology, a general structure of galvanized lower 5 ~10%;

6, saving3% acid lotion.

In two, applied technology

1, material: steel, Q235, Q345

2, the temperature of zinc liquid:440~ 455.

3, pretreatment method: sulfuric or hydrochloric acid, acid degreasing derusting combo, degreasing, pickling solution degreasing derusting.

4, zinc liquid ingredients: pure zinc and zinc base alloys

5, energy method: natural gas, liquefied petroleum gas, light diesel oil, coke oven gas, electric, gas furnace or integral type water gas furnace.

In three, the coating technology requirements

In line with the ISO1461: 1999( E ) GB / T13912-2002ASTM-A123

In four, the main equipment

Automatic temperature control furnace for galvanizing, zinc melting pot, workpiece drying furnace, before, after treatment tank, waste heat recovery and utilization device, a fluxing agent equipment in addition to iron, acid mist purification device for smoke dust removal equipment, zinc recovery, waste acid and acid waste water treatment equipment, lifting equipment and the variable frequency device of workpiece.