powder coating system Paylaşım: Yönetici
POWDER COATING SYSTEM FOR IRON AND ALUMINIUM
Deciding about the plant that will meet your demands relay on your budget, the space you dedicate for the plant installation, your production capacity, weight and the dimensions of the items to be painted.
According to method of operation, Painting Systems can be divided into 4 main groups;
1- Manual Systems
2- Semi-Automatic Systems
3- Automatic Systems
4- PLC Controlled Full Automatic Systems
1- Manual Systems are Water Based Units:
a- Manual Dip Type Pretreatment Lines
The items are immersed in the dipping tanks that full of water to clean them from oil and dirt stuck on them. After the rinsing stage the phosphate is applied to them (chromate if the items are made from aluminum). The items are in a basket or hanged while phosphating. Then, using a lift the baskets are immersed into the tanks, wait for the estimated time according to each process. After phosphating process is over baskets are sent to the drying oven.
b- Manual Drying Ovens
Drying oven used in such operation generally has an upper horizontal moving cover. According to the items’ material thickness and weight they are left to dry under 100ºC for 10 – 20 minutes. After oven reaches the adjusted temperature it stops automatically when the estimated time is over. Then items are taken after that for cooling before applying paint.
c- Manual Trolleys and Material Carrying Rays
After items are cleaned and dried they are loaded to the manual trolleys or hanged to the manual aerial conveyor taking their way to the booth for paint application and after that to the curing oven. Special design pallets also are used in manual systems which called Station Type. In this system there is pallet chain with three stations above the curing oven. The pallet chain can be run a stopped manually. Items are hanged to the conveyor in front of the oven waiting for the other items to be cured. After a group of items is cured the pallet chain is run. While the cured group is moving out other group is moving into the oven. And while this group of items is been cured other group is hanged in front of the oven preparing for the next turn and so.
d- Manual Painting Spray Booths
Items are moved manually into the painting booth where they are painted manually too. Booth sent overage paint that applied using 0.5 m/sec negative pressure to the filters section. Filters are cleaned periodically with pressurized air gaining the powder that stuck on them. The powder that gained from this operation is mixed with fresh powder to be used again.
e- Manual Cuing Ovens
This type of ovens is designed one or double side closed. Indirect type combustion system is used on these ovens, so LPG, Natural Gas and Diesel can be used safely without any fire hazard. Upon request, ovens also can be built electrically operated. The products we manufacture differ from project to other depending on customers’ needs, materials dimensions, capacity and to their financial limits. We are able to determine and supply customers with their demands after discussing the matter with them in details to specify the suitable project they are willing to achieve.
2- Semi-Automatic Systems
a- Manual Dip Pretreatment Line
The items are immersed in the dipping tanks that full of water to clean them from oil and dirt stuck on them. After the rinsing stage the phosphate is applied to them (chromate if the items are made from aluminum). The items are in a basket or hanged while phosphating. Then, using a lift the baskets are immersed into the tanks, wait for the estimated time according to each process. After phosphating process is over baskets are sent to the drying oven.
b- Manual Drying Ovens
After items are cleaned and phosphate is applied (chromate if the items are made from aluminum) they are put into the drying oven. Drying ovens used in such operation generally have an upper horizontal moving cover. According to the items’ material thickness and weight they are left to dry under 100ºC for 10 – 20 minutes. After oven reaches the adjusted temperature it stops automatically when the estimated time is over. Then items are taken after that for cooling before applying paint.
c- Automatic Aerial Line Conveyor
Automatic Aerial Line conveyors are used for carrying the items through the painting operation. Generally there are two main conveyor types; Cardan Milli and Webb type conveyors. Deciding whether to be Cardan Milli or Webb type is based on the items weight and specifications. If weight handled by a single hook of the conveyor is less than
d- Powder Coating Both for Manual or Automatic Application
After they are hanged to the conveyor, items are moving along the painting booth according to the adjusted speed. Powder application will be as desired either manual or automatic. Booth sent overage paint that applied using 0.5 m/sec negative pressure, depending on the decided system, to the cyclone unit or to the filters group section. Suction power won’t decrease because the filters are cleaned periodically from the powder stuck on them using pressurized air. The powder that gained from this operation is refined and added to the powder box to be used again after mixing it with fresh powder.
e- Tunnel, U Turn or Multi-Turns Type Continuous Curing Oven with Air Screen
Items are on their way to the oven after being powder coated. The oven door is open to take the painted items in while the air screen fan is acting to decrease heat loss to the minimum. According to the painted items the oven can be designed tunnel, u turn or multi turns type. Oven also can be heightened over platform so the oven inlet can be on the bottom. Indirect type combustion system is used on these ovens, so LPG, Natural Gas and Diesel can be used safely without any fire hazard. Upon request, ovens also can be built electric operated. In ovens there is no standard type because demands and capacity differs from a customer to the other. We are able to determine and supply customers with their demands after discussing the matter with them in details to specify the suitable project they are willing to achieve.
f- Material Cooling Tunnels
After items come out of the oven, when there is no enough space for natural cooling, a cooling tunnel is used in such cases. The cooling tunnel systems based on generating circulation inside the tunnel by sucking fresh air and blow it over the cured items, at the same time other aspirators will suck air from inside to outside the tunnel which will accelerate the items cooling. The tunnel’s length depends on the conveyor’s speed and how thick the cured items are. In some special cases, the air sucked from outside is cooled before blowing over the items.
g- Electrical Control Panel and Related Equipments
Electrical control panel is built closed to the plant to be reached easily. The control panel is equipped with standard elements like fuse, start/stop buttons, thermal switch and the short contact groups. Also main switch, amperometer and voltammeter exist in the control panel with failure indicators and siren. Indicators of the control panel light in green but when there is malfunction somewhere it turns into red and the siren is on. The thermometers or the thermostats of the ovens are also on the control panel. A diagram that shows the entire operations in the factory can be added to the control panel upon request. It installed complete so the customer doesn’t have to supply anything except the main electrical cable.
3- Automatic Systems
a- Automatic Aerial Line Conveyor
Automatic Aerial Line conveyors are used for carrying the items through the painting operation. Generally there are two main conveyor types; Cardan Milli and Webb type conveyors. Deciding whether to be Cardan Milli or Webb type is based on the items weight and specifications. If weight handled by a single hook of the conveyor is less than
b- Automatic Spray Pretreatment Lines
Items are hanged to the conveyor taking their way into the spray tunnel which is located over the tanks. The chemicals are sucked from the tanks coming to the spray tunnel through the pipes in the tunnel’s both sides and sprayed from the pipes nozzles over the moving items with 1 – 2 bar pressure. Nozzles are linked to the pipes using pipe clips and they are distributed to in a way that covers every point of the surface of the painted items. The pretreatment method is decided to be Iron Phosphate, Zinc Phosphate or Chromate based pretreatment according to the items’ type, how dirty are they and where they will be used (indoors or outdoors). Active spray pretreatment application units will be valid all the way according to the recommended time period of pretreatment. ISI Teknik will assist you to determine the best pretreatment type that will face your demand
Spray Pretreatment Systems can be divided into three main groups:
1- Iron Phosphate Based Pretreatment Lines
According to stages it can be;
a) Degreasing
b) Rinsing
c) Iron phosphate
d) Rinsing
e) Passivation
f) De-mineralized Rinsing (Optional)
Or;
a) Degreasing and iron phosphate
b) Degreasing and iron phosphate
c) Rinsing
d) Passivation
e) De-mineralized Rinsing (Optional)
Or;
a) Degreasing and iron phosphate
b) Rinsing
c) Passivation
d) De-mineralized Rinsing (Optional)
2- Zinc Phosphate Based Pretreatment Lines
According to stages it can be;
a) Degreasing
b) Rinsing
c) Activation
d) Zinc Phosphate
e) Rinsing
f) Passivation
g) De-mineralized Rinsing (Optional)
Or;
a) Degreasing
b) Degreasing
c) Rinsing (in some special cases it can be two stages)
d) Activation
e) Zinc Phosphate
f) Rinsing
g) Passivation
h) De-mineralized Rinsing (Optional)
3- Chromate Phosphate Based Pretreatment Lines
According to stages it can be;
a) Degreasing
b) Rinsing
c) Nitric Acid (none spray application, but can be adapted to automatic systems with special design)
d) Rinsing
e) Rinsing
f) chromate
g) Rinsing
h) De-mineralized rinsing (Optional)
Or;
a) Degreasing
b) Degreasing
c) Rinsing
d) Nitric Acid (none spray application, but can be adapted to automatic systems with special design)
e) Rinsing
f) Rinsing
g) Chromate
h) Rinsing
i) De-mineralized rinsing (Optional)
c- Tunnel, U Turn or Multi-Turns Type Continuous Drying Oven with Air Screen
Items are on their way to the oven after being prepared for powder coating. The oven door is open to take the painted items in while the air screen fan is acting to decrease heat loss to the minimum. According to the painted items the oven can be designed tunnel, u turn or multi turns type. Oven also can be heightened over platform so the oven inlet can be on the bottom. Indirect type combustion system is used on these ovens, so LPG, Natural Gas and Diesel can be used safely without any fire hazard. Upon request, ovens also can be built electric operated. In ovens there is no standard type because demands and capacity differs from a customer to the other. We are able to determine and supply customers with their demands after discussing the matter with them in details to specify the suitable project they are willing to achieve.
d- Manual Application Spray Booth or with Automatic Robot Powder Application
After they are hanged to the conveyor, items are moving along the painting booth according to the adjusted speed. Powder application will be as desired either manual or automatic. Booth sent overage paint that applied using 0.5 m/sec negative pressure, depending on the decided system, to the cyclone unit or to the filters group section. Suction power won’t decrease because the filters are cleaned periodically from the powder stuck on them using pressurized air. The powder that gained from this operation is refined and added to the powder box to be used again after mixing it with fresh powder.
e- Tunnel, U Turn or Multi-Turns Type Continuous Curing Oven with Air Screen
Items are on their way to the oven after being powder coated. The oven door is open to take the painted items in while the air screen fan is acting to decrease heat loss to the minimum. According to the painted items the oven can be designed tunnel, u turn or multi turns type. Oven also can be heightened over platform so the oven inlet can be on the bottom. Indirect type combustion system is used on these ovens, so LPG, Natural Gas and Diesel can be used safely without any fire hazard. Upon request, ovens also can be built electric operated. In ovens there is no standard type because demands and capacity differs from a customer to the other. We are able to determine and supply customers with their demands after discussing the matter with them in details to specify the suitable project they are willing to achieve.
f- Material Cooling Tunnels (upon request or based on the plant layout)
After items come out of the oven, when there is no enough space for natural cooling, a cooling tunnel is used in such cases. The cooling tunnel systems based on generating circulation inside the tunnel by sucking fresh air and blow it over the cured items, at the same time other aspirators will suck air from inside to outside the tunnel which will accelerate the items cooling. The tunnel’s length depends on the conveyor’s speed and how thick the cured items are. In some special cases, the air sucked from outside is cooled before blowing over the items.
g- Electrical Control Panel and related equipments
Electrical control panel is built closed to the plant to be reached easily. The control panel is equipped with standard elements like fuse, start/stop buttons, thermal switch and the short contact groups. Also main switch, amperometer and voltammeter exist in the control panel with failure indicators and siren. Indicators of the control panel light in green but when there is malfunction somewhere it turns into red and the siren is on. The thermometers or the thermostats of the ovens are also on the control panel. A diagram that shows the entire operations in the factory can be added to the control panel upon request. It installed complete so the customer doesn’t have to supply anything except the main electrical cable.
4- PLC Full Automatic Systems
a- Automatic Aerial Line Conveyor
Automatic Aerial Line conveyors are used for carrying the items through the painting operation. Generally there are two main conveyor types; Cardan Millie and Webb type conveyors. Deciding whether to be Cardan Milli or Webb type is based on the items weight and specifications. If weight handled by a single hook of the conveyor is less than
b- Automatic Spray Pretreatment Line
Items are hanged to the conveyor taking their way into the spray tunnel which is located over the tanks. The chemicals are sucked from the tanks coming to the spray tunnel through the pipes in the tunnel’s both sides and sprayed from the pipes nozzles over the moving items with 1 – 2 bar pressure. Nozzles are linked to the pipes using pipe clips and they are distributed to in a way that covers every point of the surface of the painted items. The pretreatment method is decided to be Iron Phosphate, Zinc Phosphate or Chromate based pretreatment according to the items’ type, how dirty are they and where they will be used (indoors or outdoors). Active spray pretreatment application units will be valid all the way according to the recommended time period of pretreatment. ISI Teknik will assist you to determine the best pretreatment type that will face your demand.
Spray Pretreatment Systems can be divided into three main groups:
1- Iron Phosphate Based Pretreatment Line
According to stages it can be;
a) Degreasing
b) Rinsing
c) Iron phosphate
d) Rinsing
e) Passivation
f) De-mineralized rinsing (Optional)
Or;
a) Degreasing and iron phosphate
b) Degreasing and iron phosphate
c) Rinsing
d) Passivation
e) De-mineralized Rinsing (Optional)
Or;
a) Degreasing and Iron Phosphate
b) Rinsing
c) Passivation
d) De-mineralized Rinsing (Optional)
2- Zinc Phosphate Based Pretreatment Line
According to stages it can be;
a) Degreasing
b) Rinsing
c) Activation
d) Zinc Phosphate
e) Rinsing
f) Passivation
g) De-mineralize Rinsing (Optional)
Or;
a) Degreasing
b) Degreasing
c) Rinsing (in some special cases it can be two stages)
d) activation
e) Zinc Phosphate
f) Rinsing
g) Passivation
h) De-mineralized Rinsing (Optional)
3- Chromate Based Pretreatment Line
According to stages it can be;
a) Degreasing
b) Rinsing
c) Nitric Acid (none spray application, but can be adapted to automatic systems with special design)
d) Rinsing
e) Rinsing
f) Chromate
g) Rinsing
h) De-mineralized Rinsing (Optional)
Or;
a) Degreasing
b) Degreasing
c) Rinsing
d) Nitric Acid (none spray application, but can be adapted to automatic systems with special design)
e) Rinsing
f) Rinsing
g) Chromate
h) Rinsing
i) De-mineralized Rinsing (Optional)
c- Tunnel, U Turn or Multi-Turns Type Continuous Drying Oven with Air Screen
Items are on their way to the oven after being prepared for powder coating. The oven door is open to take the painted items in while the air screen fan is acting to decrease heat loss to the minimum. According to the painted items the oven can be designed tunnel, u turn or multi turns type. Oven also can be heightened over platform so the oven inlet can be on the bottom. Indirect type combustion system is used on these ovens, so LPG, Natural Gas and Diesel can be used safely without any fire hazard. Upon request, ovens also can be built electric operated. In ovens there is no standard type because demands and capacity differs from a customer to the other. We are able to determine and supply customers with their demands after discussing the matter with them in details to specify the suitable project they are willing to achieve.
d- Manual Application Spray Booth or with Automatic Robot Powder Application
After they are hanged to the conveyor, items are moving along the painting booth according to the adjusted speed. Powder application will be as desired either manual or automatic. Booth sent overage paint that applied using 0.5 m/sec negative pressure, depending on the decided system, to the cyclone unit or to the filters group section. Suction power won’t decrease because the filters are cleaned periodically from the powder stuck on them using pressurized air. The powder that gained from this operation is refined and added to the powder box to be used again after mixing it with fresh powder.
e- Tunnel, U Turn or Multi-Turns Type Continuous Curing Oven with Air Screen
Items are on their way to the oven after being powder coated. The oven door is open to take the painted items in while the air screen fan is acting to decrease heat loss to the minimum. According to the painted items the oven can be designed tunnel, u turn or multi turns type. Oven also can be heightened over platform so the oven inlet can be on the bottom. Indirect type combustion system is used on these ovens, so LPG, Natural Gas and Diesel can be used safely without any fire hazard. Upon request, ovens also can be built electric operated. In ovens there is no standard type because demands and capacity differs from a customer to the other. We are able to determine and supply customers with their demands after discussing the matter with them in details to specify the suitable project they are willing to achieve.
f- Material Cooling Tunnels upon request or based on the plant layout
After items come out of the oven, when there is no enough space for natural cooling, a cooling tunnel is used in such cases. The cooling tunnel systems based on generating circulation inside the tunnel by sucking fresh air and blow it over the cured items, at the same time other aspirators will suck air from inside to outside the tunnel which will accelerate the items cooling. The tunnel’s length depends on the conveyor’s speed and how thick the cured items are. In some special cases, the air sucked from outside is cooled before blowing over the items.
g- Electrical Control Panel and related equipments
Electrical control panel is built closed to the plant to be reached easily. The control panel is equipped with standard elements like fuse, start/stop buttons, thermal switch and the short contact groups. Also main switch, amperometer and voltammeter exist in the control panel with failure indicators and siren. Indicators of the control panel light in green but when there is malfunction somewhere it turns into red and the siren is on. The thermometers or the thermostats of the ovens are also on the control panel. A diagram that shows the entire operations in the factory can be added to the control panel upon request. It installed complete so the customer doesn’t have to supply anything except the main electrical cable.
h- PLC SCADA Unit
The painting plant can be operated with the support of PLC SCADA unit that adapted to the electrical system. The entire system is computer controlled. From the start of the motors, malfunction mode, heating systems, temperature control and even the conveyor speed all are computer controlled. The system based on entering the needed data to the computer memory and the system will operate accordingly. In this system you will be able to control and operate retrospectively. For example if there is quality loss in an item that sold 3 months before you can retrieve the data within the estimated date of the item production to determine exactly which kind of error caused that problem.