Complete automatic hot-dip galvanizing line for fasteners coating

1. 1.    Application: to produce the fasteners in automatic actions of loading/degreasing/rinsing/pickling/flux coating/drying/hot-dip galvanizing/centrifugaling

1. 2.    Technology flow: workpiece→ degreasing→ rinsing→ pickling→ rinsing→ flux coating→ drying→ hot galvanizing→ centrifugaling → water cooling

1. 3.    Composition

a)     loading barrel 1 pc

b)     degreasing tank :  2 pcs

c)     rinsing tank: 1pc

d)     pickling tank:2pcs

e)     rinsing tank :  2 pcs

f)      flux coating: 1pc

g)     conveyor belt drying furnace 1 set

h)     rotating barrel mechanism   1 set

i)       hot galvanizing tank with loading/transmission system  1 set

j)       centrifugaling machine 1 set

1. 4.    main technical specifications:

a)     size of fasteners : on request

b)     zinc coating thickness: 0.04-0.06mm(ASTM/DIN/AS/ISO)

c)     productivity: 1.5t/hour

1. 5.    Machine description

5.1Crane:1 set

material: A3 welded steel plates or H beam steels;

5.2Tank:

1)  10mm PP/PVC

2)  strengthened by A3 steel to bear heavy duty;

3)  tanks material and dimensions

5.3V shape base:

       1)non-conductive V shape bases are made of polymer PE material  

       2)conductive V shape bases are made of cast copper

5.4Heating/cooling system

1)    Pre-treatment tanks are heated by SUS304 electrical heating pipes, be equipped with temperature controller;

2) Flux coating tanks are heated by titanium electrical heating pipes, be equipped with temperature controller.

5.5 Drying furnace

Conveyor belt transmission type

Resistance heating power: 30kw

Dimension of the furnace(L*W*H): 3000*1000*1500mm

5.6Collecting barrel rotating mechanism

2pcs of barrel installed on the rotating round table;

5.7Hot galvanizing loading/transmission robot

1) The robot is consists of supporting arm, which is welded on the H beam frames;

2)Loading and transmission automatically under orders

3)Barrels can be rotated and tilted for better galvanizing;

5.8Hot galvanizing tank

1)Tank material: ceramic tank/steel kettle

2)Tank dimension: 3500*2000*1500mm

3)Heating method: electrical inner heating(according to condition of customers,can be heated by natural gas or oil)

4)Zinc liquid temperature range: 450-560℃

5.9 Centrifugal machine

5.10 Scrubber system

1)sucking cover is installed above the tanks or aside of tanks,be connected by one channel;

2) wasted air treatment tower:material 10mmPP;PP filled material,water proofing film,vertical chemical pump,spraying mechanism,centrifugal fan