Chinese Design Customization Industrial Dust-Free Powder Coating System for Car Shells, Powder Coating Line for Auto Parts*

Chinese Design Customization Industrial Dust-Free Powder Coating System For Car Shells, Powder Coating Line For Auto Parts

Production description



Chain system 
Adopt QXT200/30KG, double tension and drive, frequency converter control. Equips with C type hanger and oil connection plate.

Pre-treatment system
Pre-treatment adopts suitable silane environmental protection processre-treatment adopts suitable silane environmental protection process


Curing oven
Curing oven adopts full bridge type to save the energy. Internal curing oven adopts 0.8mm galvanized steel plate, external curing oven adopts 0.8mm color plate.


Detailed images

The whole line includess pre-treatment, electrophoresis, curing oven, chain system, electrical control system etc


Complete production line process and parameter

Item	Name	Design
1	Porduct name	Painting Steel Metal Powder Coating Line
2	Product material	Cold rolled plate (no rust, no oxide) (plate thickness 0.5-5mm)
3	Workpiece size	L2000W700 H1700(mm). Double point hanging
4	Wire speed through size	L2000W700 H1800(mm). (front high rear low hanging method)
5	Suspension way	Single or double point hanging, with C - type hanging and beam hanging
6	Suspension chain	Qxt250/50kg,
7	Maximum workpiece weight	Single point hanging ≤100Kg
8	Production line capacity	2.0m/min (customized by the buyer), Note: the thick workpiece shall be slowed down
9	Speed adjust range	0.5-3.0m/min
10	Heating energy	Nature gas

 

Item	Process	Time (s)	Temperature(ºC)	Remark	Effect time (seconds)
1	Loading		/	Manually
2	Pre degrease	60	50-55	Heating by hot water	60
3	Main degrease	120	50-55	Heating by hot water	120
4	Water Washing1	60	R.T		45
5	Pure Water washing1	60	R.T	Into the water washing1	45
6	Pure water spraying1		R.T	Into the pure water washing1
7	Silicane	90	15-30	Hot water heating	90
8	Pure water washing2	60	R.T		45
9	Pure water washing3	60	R.T	Into the pure water washing2	45
10	Pure water spraying2		R.T	Into the pure water washing3
11	Drying	600	130-170	Temperature is adjustable(Natural gas direct heating)	360-420
12	Cooling	600		Natural cooling	600
13	Powder coating	/	/	Automatic+Manually
14	Powder curing	1320	180-200	Temperature is adjustable(Natural gas direct heating)	1020
15	Cooling	600		Natural cooling	600
16	Unloading			Manually

1 This equipment consists of pre-treatment, electrophoresis, curing drying tunnel, catenary system, electrical control system, etc.

2. Pre-processing and post-processing.
 
Pre-treatment adopts environmentally friendly process suitable for silane.
The pre-treatment adopts a full-spray process, which can effectively form a film. The shed and the liquid storage tank are all made of stainless steel; the spray side plate is a double-layer plate. To ensure no leakage, insulation cotton is added between the two layers of the heating section, and the outer plate is a plug-in type. This structure has the functions of beautiful appearance, noise reduction and saving.
   
The spraying pipeline adopts main stainless steel pipe and branch pipe PP pipe, and the quick connection is connected with the main pipe, and no live joint is used, which can be easily disassembled and maintained;
   
The side wall of the spray storage tank is made of double-layer stainless steel, and it is covered with rock wool board for thermal insulation. The cover structure of the spray heating tank mouth adopts a water seal mechanism to prevent steam from overflowing from the tank cover.
 
The top of the spraying shed body in the heating section adopts an air extraction mechanism, equipped with an exhaust pipe and an exhaust fan, and the remaining sections are sealed with a brush bar, which solves the phenomenon of steam overflow.
 
For the convenience of maintenance, A3 overall maintenance platform is provided.
 
The water washing tank adopts a countercurrent complementary method to save water resources; pure water equipment is equipped with a concentrated liquid water tank and a water pump, pumped to water washing 1, to fully utilize water resources.
 
The spray pump uses a submerged pump.
 
All connection lines are easy to remove and maintain.

3..Electrophoresis
 
Electrophoresis is equipped with electrophoretic auxiliary equipment: rectifier power and conductive devices, ultrafiltration system, anode system, main circulation system, and transfer tank system.
 
3.1 Rectified power supply and conductive device
The rectified power supply uses a single voltage. The conductive device adopts double-ear double-contact + steel bar, which is charged into the groove. A conductive hanger is arranged in the primary hanger, and a conductive copper bar is arranged in the electrophoresis tank.

3.2 Ultrafiltration system
It adopts roll-type ultrafiltration membrane and is imported. In order to save the power of the main circulating water pump, the ultrafiltration water pump participates in the circulation and is controlled separately. And equipped with filters.

3.3 Heat exchange system
Plate heat exchanger is used for heat exchange. Equipped with chiller and heating function.

3.4 Transfer tank system.
In order to facilitate the electrophoresis cleaning, an electrophoresis transfer tank is provided, and a stirring system is arranged in the tank. The transfer (electrophoretic stirring) and ultrafiltration pumps are Shanghai Ruichi double shaft sealed water pumps.

3.5 anode system
The anode uses a tubular anode system. Equipped with a total flow meter and ammeter.

3.6 Hydrating
In electrophoresis post-processing, countercurrent complementary method is adopted.

4. Introduction of conveying method

The catenary is QXT200 / 30KG. It adopts double driving and double tensioning, and adopts inverter control. Equipped with C-type hanger and oil receiving plate, reducing the pollution to the workpiece and suitable for the production of product technology.

5.Introduction to the curing tunnel

The drying tunnel is set on the overall platform, and below is the fire passage and auxiliary equipment for electrophoresis
The side panel of the drying tunnel adopts a male-female plug-in structure. Use full bridge. save energy. The inner plate of the drying tunnel adopts δ0.8 galvanized steel plate. Outer plate uses δ0.8 color steel plate
  
Drying tunnel natural gas indirect heat exchange heating.
Exhaust duct and air curtain in drying tunnel
The heating chamber is provided with an inspection door, and it is the cold air inlet for cooling.
A vent is provided at the top of the drying tunnel.

6.Introduction of electronic control system

The electronic control system adopts the principle of centralized control and decentralized setting;
PLC + touch screen operation;
All relevant parts are provided with interlocks;
The liquid storage tank is provided with a liquid level gauge, and the low liquid level is interlocked with the pump and alarmed.


After sale service

Onsite installation & Commission
We will provide the on-site installation and commission service as long as the machine arrives buyers' factory.


Company introduction
Wuxi Longterm Machinery Technologies Co.,Ltd has worked in coating industry for over 20 years and sell to domestic and international famous enterprises:Cheetah car etc., JinGu\Jinfei car parts, Yueling car parts,Electrolux, Siemens, Philip , Atlas, WAM and domestic long march Launch Vehicle, Haier, Hisense,and exported to Russia, Vietnam, India, Syria , Pakistan, Mexico and more than 20 countries, while is the coating supplier for China Business Aircraft Group in 2009. 


Enterprise patent & certificate
Wuxi Longterm coating is national hi-tech company, and has been awarded several honorary title by national and provincial government

          

FAQ

A. Workpiece size/specification,weight and process requirements(Powder coating or painting? ) 

B. Plant foundatation drawing,including plant height(the height between factory beam to the ground) and loading&unloading position 

C. Heating energy:Electric,LPG or LNG? 

D. The environmental requirements of your local government

E. Voltage

F. Daily and annual capacity