1 About ED paintElectro-deposition of primer coating has become universal for a modern automotive paint shop. In ED, charged particles from the paint emulsion move to Anode (AED) or Cathode (CED) under electrical forces. The direct current established through the bath makes the pigment and resin base of the paint wander towards the body surfaces. Coating reaches all the recessed area. Deposited film does not re-dissolve. However, the un-deposited material is rinsed. Ultra filtrate (UF) equipments are used for ED paint ingredients separation of those not forming film and recovery of Paints. Deposited film after stoving becomes hard, durable polymeric film.
2 Mainly includesPretreatment
Electro coat Bath and Ancillary Equipment
Post Rinses
Bake Oven
3 AdvantagesCathode Electro Deposition is most advanced and environment friendly Water based coating to be done on metal components. A combination of dip and spray ensures reach of paint at every corner of component having intrinsic shape as well. CED is chemically resistant, mechanically durable, and pleasant in appearance having very Good Salt Spray life and is sought for by all automobile users.
·Fully automatic operation, film thickness can be controlled
·Uniform coating
·Better coverage in box and interior surfaces
·Good coverage of sharp corners
·No runs and sags
·No solvent boils
·Better chip and corrosion resistance
·Nearly 100% paint utilization
·Superior in anti-pollution, safety, health hazards
Sr. No. | Stage | Temp. Process time | Circulation Rate | Chemical | Temp | Dosing system | Material | Cascading |
1. | ED tank | 3 mins. | 6~8 circulation turn overs/Hr by volume | ED bath Paint | 28 ~32 °C | diaphragm pump for paint feeding | MS tank with FRP lining, PVC piping in the tank, SS304 piping outside the tank. Eductor nozzles inside the tank for circulation | Overflow of UF rinse I tank to ED tank by gravity or by pump other than spray pump |
2. | UF Rinse I spray | 0.5 min. | 0.5 ~1.5 Kg/cm2 spray pressure | Re circulated UF permeate | < 30°C | (Provision for DI Water addition) | MS tank with FRP lining, SS 304 piping & spray nozzles. | Overflow of UF rinse II tank to UF rinse I tank |
3. | UF Rinse II Dip | 0.5 min. | 3~4 circulation turn overs/Hr by volume | Re circulated UF permeate | < 30°C | (Provision for DI Water addition) | MS tank with FRP lining, SS 304 piping, Eductor nozzles in side the tank for circulation | Overflow of UF rinse III tank to UF rinse II by gravity or by pump other than spray pump |
4. | UF Rinse III spray | 0.5 min. | 0.5 ~1.5 Kg/cm2 spray pressure | Re circulated UF permeate | < 30°C | (Provision for DI Water addition) | MS tank with FRP lining, SS 304 piping & spray nozzles. | Exit mist spray with fresh permeate. 10 lpm |
5. | RCDM dip rinse | 0.5 min. | 3~4 circulation turn overs/Hr by volume | Re circulated DM Water | Ambient | (Provision for DI Water addition) | MS tank with FRP lining, SS 304 piping, Eductor nozzles in side the tank for circulation | Exit spray with fresh DI Water. 2 Lit/M2 |
6. | Fresh DM Spray | Pass time | 0.5 ~1.5 Kg/cm2 spray pressure | Fresh DM Water | Ambient | -- | MS tank with FRP lining, SS 304 risers | Cascade to RCDM |
7. | Flash off | 5~10min | --- | --- | Room Temp. | --- | --- | 3 min flash off |
8. | Baking | (30~40Min) | --- | --- | 160°C/10 min. or 150°C/20 min EMT | --- | --- | --- |
4 How to choose ED coating equipment1. The size and weight of workpiece,especially the max size and weight
2. Is there any requirements about the suspension of the workpiece?
3. The material of the workpiece
4. The anticipative output for the biggest size of the workpiece(how many pcs in 8 hours)
5. The length,width and height of the factory available for the powder coating line,we need the picture
6. The heating power:Liquefied Petroleum Gas, Liquefied natural gas,diesel,or electric?
7. Do you need pre-treatment process? If you do,you want spray pre-treatment or bath pre-treatment?Online pre-treatment or offline pre-treatment?
8. The local electricity conditions(_V/_Phase/_Hz)
9. Do you have any special requirements about the package?
If you have any other requirement,please feel free to communicate with us.
Yangzhou Anyuan Coating Machinery Co., Ltd. was founded in 2004, registered capital of 20 million, is a professional company of various type of coating equipment and powder coating. Our aim is to produce better products and provide satisfactory service.
Our company has excellent design, production, R & D capability and rich technical experience, high-quality technical personnel, professional service team.
Our main products are: electrostatic spraying equipment, automatic lift, through the spray pretreatment equipment, dipping device, processing type water curtain spray booth and water jet spray chamber, dry spray chamber, electrostatic coating chamber, electric heating, fuel, gas, coal fired hot air drying furnace, automatic control system, blasting PLC cleaning cleaning equipment, cathode electrophoresis equipment, advanced auto spray booth, transportation equipment, environmental protection equipment, coating equipment and all kinds of thermosetting powder coatings.
We know the latest technologies in the surface treatment industry - that is why you should choose us as your supplier. We have the experience and expertise to guide you through and to manage a complete finishing line project.
First, Pre-sale services |
Act as a good adviser and assistant of clients enable them to get rich and generous returns on their investments. 1). Select equipment model; 2). Design and manufacture products according to client's special requirement. 3). Train technical personal for clients. |
Second, Services during the sale: |
1). Pre-check and accept products ahead of delivery. 2). Help clients to draft solving plans. |
Third ,After-sale service: |
Provide considerate services to minimize client's worries 1). Assist clients to prepare for the first construction scheme. 2). Install and debug the equipment. 3). Train the first-line operators. 4). Examine the equipment. 5). Take initiative to eliminate the trouble rapidly. 6). Provide perfect service. 7). Provide technical exchanging. |