Specifications

Blasting & Painting room for ship body sections

The blasting & painting rooms for shipbuilding are divided into two systems: Blasting system and painting system. The ship body sections will be delivered into painting rooms after blasting to accept manual painting.

(1) Blasting System

- Sand (shot) blasting, sand (shot) removing, dust removing, abrasive circle cleanness, air drying, air dehumidifying and so on in blasting system.

- The blasting system adopts auto continuous type sand blasting machine. The quantities of sand blasting machines and spray guns are decided by productivity from customers.

- After blasting, most sand (shots) in the ship body sections will be removed out by hand and the rest of sand (shots) will be removed by shots vacuum suction machine.

- The sand (shots) on floor will be sent to shots circle system by loading vehicle.

- The abrasive circle system is made of belt conveyor, bucket elevator, air wash type separator, screw conveyor, abrasive storage bin, shots distributing system and dust removing system and so on.

- The dust removing system is made of horizontal type pulse cartridge filter dust collector, air tubes and dehumidifier etc..

(2) Painting system

- The painting system adopts USA GRACO high pressure airless paint pump system and workers do spray painting to ship body sections by hand.

- The paint mist treatment system adopts dry type paint mist filtering house to absorb paint mist.

- The air heating purifying adopts gas burning type. The burner brand is Italy brand.

(3) Electrical Control System

- It adopts OMRON C200HG PLC control.

- It adopts GSD ammeter to show the electric currents of air fans.

- The output standard of GSD ammeter is 4-20mA. The current signal will come to PLC modulus to convert module.

- It adopts pressure differential displayer to show the cleanness situation of air wash type separator and cartridge filters.

- It adopts FAST pneumatic elements.

- It adopts central control station and partial control station.

- It adopts E-STOP button for all partial control station.

- It adopts failure alarming function in abrasive recycle system.

- It adopts MSA product for paint mist density alarming device in painting room.

(4) General Technical Parameters

No.	Name	Unit	Parameters	Remark
1	Blasting room size	m
1.1	Blasting room1	m	40×33×12	Example
1.2	Blasting room2	m	According to customer’s requirements
2	Painting room size	m
2.1	Painting room1	m	40×33×12	Example
2.2	Painting room2	m	According to customer’s requirements
3	Machine room size	m	According to customer’s requirements
4	Pliable door	m	According to customer’s requirements
5	Ship body section size	m	Provided by customer
6	Productivity
6.1	Blasting area needed	m2/hr	Provided by customer
6.2	Shots reclaim time need	hr	5
6.3	Checking time need	hr	2
6.4	Paint time need	hr	12
7	Spray gun qty.	piece	According to blasting area
8	Surface quality after blasting		ISO8501-1988 A-B Sa2.5
9	Surface roughness		Rz 40-75
10	Paint film thickness	μm	25
11	Dust emission density	mg/m3	≤50
12	Noise of equipments	dB(A)	≤93
13	Anti-explosion grade in painting room		DIIBT4
14	Total Power	kw	Refer to technical documents
15	Compressed air consumption	m3/h	Refer to technical documents