China LPG Gas Cylinder Production Line Electrostatic Spraying Production Line Powder Coating Line

Electrostatic Spraying Production Line for LPG Cylinder Manufacturing Plant

1. Powder coating line design

NoNameDetails1WorkpieceGas cylinder2Workpiece materialmetal3Max. workpiece sizeΦ300xH570(mm)4Workpiece weight≤30kg5Braced chainQXT250/50Kg light common chain6Machine capacity2000pcs/12hours7Hanging typeOne cylinder every two pitch, that means one cylinder per 500mm.8Linear speed2000pcs÷12h÷60minx0.5m/hang=1.4m/min9Heating sourceNature gas(LPG)10Location areaSee layout drawing, beam bottom height 8.5 meters

2. Process flow diagram
This line consists of powder coating chamber, booth, curing bake, suspend conveyor and electric control system.

NoNameTransit timeWorking temperatureOperation 1Loading RTManual2Powder coating RTAuto+manual3baking17-18min180-190ºCHeated air circle4cooling20min 5unloading Manual

3. Curing bake
The drying tunnel consists of three parts: drying tunnel. Heating system and exhaust system.
3.1 Drying tunnel

NoNameTechnical parameter1Overall structureBridge type2No of tunnels43Size of the inner tunnelL14xW3.2xH2.1(m). Leg height 2.5meters4Thickness of the insulation150mm5Material of the insulationHigh quality rock wool board6Unit weight of the insulation100Kg/m37Material of the inner plateδ0.8 galvanized steel sheet8metarial of the outer plateδ0.8 color sheet9Structure of inner and outer plateAssembly structure10Material of the inner angle plateδ1 galvanized steel sheet11Material of the outer angle plateδ3 hot-rolled sheet with paint12Supporter material of the tunnelδ3 carbon steel sheet, edgefold with paint13Outer temperature of the tunnelLower than environment temperature 15ºC14Inner temperature of the tunnel180ºC15Drain cracking-offTop of the tunnel

3.2. heating system: consists of heating chamber, burner, heated air recycling fan, return airway and temperature control system.
(1)heating room: an access door is on the side of the heating chamber for future repairing.

NoName Technical parameter1Position and number of heating roomBottom of the bake tunnel, 1 set2Heating room configuration300000 calories, 1 set3Inner plate of the heating roomGalvanized steel, δ14Outer plate of the heating roomCold-roll steel sheet, δ1.55Thickness of the insulation150mm6Material of the insulationHigh quality rock wool board7Unit weight of the insulation100Kg/m38Material of the inner angle plateδ1 galvanized steel sheet9Material of the outer angle plateδ3 hot-rolled sheet with paint10Supporter material of the tunnelδ3 carbon steel sheet, edgefold with paint11Structure of inner and outer plateAssembly structure

(2) burner
1 set, 300000 calories
Gas consumption: 10-15m3/h
Brand: Italian Riello RS34

(3)burning tank
Heat exchanger is used to transfer the heat to heating room, then hot-air blower will bring the heat to the tunnel. Adopts direct-fired heating, the burning tank is stainless steel with high temperature filter.

(4)Thermal cycling fan: adopts special air-cooled centrifugal fan

NoNameParameter1ModelGCF-630C2Rotation speed1250r/min3Air flow volume13500m3/h4Total pressure900Pα5Motor power5.5KW6Fan structureImpeller is in the heating room7Insulation thickness150mm9Impeller material16Mn10No. Of fans1 set11Fans supplierShanghai Shuyuan or Kewangda

(5) Air delivery & returning duct

NoNameParameter1Hot air recyclingInternal recycle, no outer tubes2Air delivery typeUnder floor air delivery3Air returning typeUnder floor air returning4Duct materialGalvanized steelδ15No of air regulation plate1 set6Material of air regulation plateGalvanized steelδ1

(6) Temperature control system
Drying tunnel uses digital temperature controller to adjust the temperature automatically, it can display and control the drying tunnel temperature in real-time.
The temperature measurement uses platinum resistor temperature sensor.
The drying tunnel temperature can be adjusted continuously from normal temperature to 200°C.

3.3. Exhaust pipe
The entrance/exit of the drying tunnel on the top equips with exhaust pipe and butterfly valve, it is used for draining the exhaust gas of the drying tunnel.
The material of the exhaust pipe is δ1mm galvanized sheet.

4. Hang type conveyor
Hang type conveyor consist of driving device, tension device, variable-frequency governor, chain, straight conveyor, bend conveyor, temperature flexible conveyor, inspection conveyor and lubrication system etc.
Variable -frequency governor uses Mitsubishi. The speed is 1.4 m/min.
The lubrication system uses automatic oil drop device.
Hang type conveyor equips with 1 set driving device, 1 set weight-loaded type tension device, using frequency to adjust speed.

NoNameTechnical specification1Driving device modelQXT-2502Driving device quantity1 set3Overload protection for driving deviceAdjustable safety clutch+travel switch4Driving device power3.0KW5Tension device typeWeight-loaded type6Tension device quantity1set7Turning radius of tension device≥R800(mm)8Frequency converterMitsubishi 1 set9Conveyor chain length125m10Conveyor chain pitch250mm11Hoisting weight of conveyor chain single point50Kg12Production speed1.4m/min13Production speed adjustable methodFrequency control(0.6-2.0m/min)14Column quantity,materialComplete set, steel section15Bottom plate quantity,materialComplete set, hot-rolled sheet steel16Beam quantity,materialComplete set, steel section17Diagonal bracing quantity,materialComplete set, steel section18lubrication systemAutomatic oil drop device 1 set19"C" type jig and rotary rack250 pcs20Rotary rack1set

5. Powder coating system
5.1. Technical parameter

Machine typeManual
Max. Hang range of the workpiece
W310xH570Conveyor speed
about 1.4m/min
Type of conveyorSuspend conveyor
Coating material
Polyester powder and epoxy powderColor2 kindsPowder supplier
LocalType of coating chamber
Filter type powder coating chamberType of powder coating systems
Corona torchNo of powder coating systems
6 sets auto, 1 set manual spraying torchType of hoister
Reciprocating hoisterNo of hoister1 setNo of the torch on the hoister2 sets on left, 2 sets on top, 2 sets on bottomSuction capacity of coating chamber11000 m3/hRequired pressure for compressed air
6 - 8 bar , + 0.1 barRemaining water in the compressed air
Max. 1.3 g/N m3 Remaining oil in the compressed airMax. 0.1 mg/N m3 Estimated air consumption for chamber
120 N m3/hPower supply220/380 VAC, 50Hz, 3L/N/PE, 3 phase 5 wiresEstimated power consumption for powder coating
Approx. 10 KVAEstimated power consumption for chamber
15KVA -- powder coating chamberRequirement for operation conditionRelative humidity<80%
Ambient temperature< 30ºC
Air speed near the chamber< 0.1 m/sec

6. Package and Delivery
7.Successful Cases
3kg, 6kg, 12kg LPG cylinder powder coating line in Kenya
12kg LPG cylinder powder coating line in Bangaladesh

8. Our Company
Wuxi Longterm Machinery Technologies Co.,Ltd. is an influential manufacturer of coating equipment,environment-protective plating equipments, green environment-protective powder and other specialized coating production.Our company pays attention to product innovation, with 20 invention patents and 119 utility model patents.
Our products are sold to domestic and international famous enterprises:Cheetah car etc., JinGuJinfei 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.
Patent And Enterprise Certificate.
Wuxi Longterm coating is national hi-tech company, and has been awarded several honorary title by national and provincial government

9. FAQ
Q: What size of the LPG cylinder your machine can powder coating?
A: 6kg, 12kg,15kgs, and 50kgs LPG cylinder for cooking and another size according to customers' requirements.
Q: about the price
A: The price showing on the website is not real because of various items at different prices. The final quotation based on two sides (customer and manufacturer) confirmed the technology project afterward.
Q: Production cycle
A: We are a professional manufacturer of providing the powder coating system. Ensure providing a qualified product and service, we are setting the production cycle is 60 working days. The actually lead time depends on the recent actually production planning.
Q: Service
A: We will offer the whole plant design proposal freely before place order. We are welcome customer visiting the coating line onsite anytime. We will prepare a detailed technology proposal after getting approval between customers and manufacturers.
Enable us to provide the most suitable proposal for you, please tell me the following details:
1.Workpiece size/specification, weight, and process requirements(Powder coating or painting?)
2.Plant foundation drawing, including plant height (the height between factory beam to the ground) and loading&unloading position
3.Heating energy: Electric, LPG, or LNG?
4.The environmental requirements of your local government
5.Voltage
6.Daily and annual capacity.