3.0Meters Steel Plate Pretreatment Line

Steel Plate Pretreatment Line:

The steel plate pretreatment line consists of feeding and blanking roller, shot blast system, dust removing system, testing roller, automatic paint-spraying system, drying System, as well as electrical control system (including a workpiece detector). It is applied to remove the rust, scale and contamination on the steel surface, so as to make the surface clean, bright but with a certain coarseness, by which the paint film can attach to the steel surface more firmly, hence the surface quality and the anti-corrosion capacity of products are improved. The primer (inorganic zinc silicate) automatically pre-painted after shot-blasting, can prevent the steel from being secondarily contaminated and rusted during operation in the workshop. And, the surfaces of the products are clean, unrusted, uncontaminated for final painting.

This line, with a total length of 54m, designed and manufactured on the base of advanced experience native and abroad, has been furnished with a variety of properties, such as high technology, ideal structure, long duration, easy handling and maintenance and high efficiency.

In the electric central controlling room are installed a TV touch screen, a TV monitor, whereby the operations can be controlled intuitively and the failures are observable. Meanwhile, through the TV monitor, the feeding and blanking statuses along the pretreatment line also are in view.

In case there should be some urgencies and the machine should be stopped in no time, buttons of EMERGENCY STOP are installed at the upper blanking roller, shot blast chamber and paint sprayer in the general control room.

Main Technical parameters

Size of blasting jobs

Name		Unit	Technical Data
Steel Plate	Thickness	mm	6~60
	Width	mm	3000
	Length	mm	3000~15000
Steel Profile	Height	mm	300
	Length	mm	3000~15000

Size of blasting chamber open

Name	Unit	Technical Data
Width	mm	3200
Height	mm	500

General Parameters

Name	Unit	Technical Data
Max loading of conveying rollers	t/m	1.5
Delivery speed	m/min	0.5~5
Working speed for steel plate	m/min	0.5~2.5
Working speed for steel profile	m/min	0.5~1.5
Annual output	t	50000 (250 working days, 8 hours / shift)
Surface quality		Sa2.5 GB8923-88
Paint film Thickness	µm	15~25
Temperature in drying chamber	℃	40-70
Compressed air consumption	cbm/h	6
	Mpa	0.4~0.8
Dust Emission density	mg/cbm	80
Noise of whole equipment	dB	≤85
Power of whole line	kw	About 395
Size of whole line		Refer to general drawing

Main components of equipment and performance

This equipment is mainly made of cross in-feed and out-feed transverse conveying unit, delivery conveying rollers system, shot blasting system, painting system, drying system, paint mist treatment system, dust removing system, electrical control system and so on.

Working process:

Foundation Drawing

Genaral Drawing: