Steel pretreatment line refers to the processing process in which steel is processed before surface shot blasting and rust removal and coated with a protective primer.Pretreatment of steel can improve the corrosion resistance of mechanical products and metal components, improve the fatigue resistance of steel plate, and extend its service life.At the same time can also optimize the state of steel surface technology, is conducive to CNC cutting machine blanking and precision blanking.In addition, since the shape of steel before processing is relatively regular, which is conducive to mechanical derusting and automatic spray painting, the use of steel pretreatment can greatly improve the efficiency of cleaning work, reduce the labor intensity of cleaning work and environmental pollution.In the steel pretreatment line, computer monitoring, monitoring center simulation screen, closed-circuit television monitoring, and according to user requirements can be configured with automatic code printer and automatic bar code printing device.Automatic pretreatment line monitoring system for steel profile surface.

Workpiece delivery system

Variable frequency stepless speed regulation of workpiece conveying system, each department can operate synchronously and independently

The roll table of shot blasting chamber is equipped with special wear-resisting sheath

"V" type structure of plate chain conveyor, short line contact of steel plate after painting to avoid damage of paint film.

Blast cleaning

Photoelectric switch and brake motor are used for workpiece height measurement.

Workpiece width measuring device, automatically adjust the number of opening of shot feeding brake

Advanced cantilever centrifugal shot blasting device is adopted. The layout of shot blasting device is simulated by computer.The projectile avoids the roller table and the workpiece is covered uniformly.

The projectile to clean

1 rolling sweep, side sweep and high-pressure fan blowing

Pellet circulation purification

1 adopt full curtain air separator,

2. Adopt the special polyester wire core hoist driving belt,

Air - controlled projectile controller is adopted

Each power point of the projectile circulation system is equipped with fault alarm function

Shot blasting dust removal system

1. Cyclone and cloth bag integrated dust remover are selected to discharge dust up to national standards

Spray paint room

1 high pressure airless painting pump 2 sets, one of which is spare

2. Standard linear guide rail is adopted to support the trolley, and the two ends of the trolley stroke are frequency buffered

3 workpiece detection and transmission mechanism and spray gun separation Settings, no paint mist interference, easy to clean up the paint scale

Drying room

1 can use a variety of media heater (or burner), hot air circulation, so that the heat can be fully used.

The drying room temperature is adjustable from 40 to 70 degrees

Paint mist filter and harmful gas purification device

Adopt advanced paint mist filter cotton to filter paint mist

Use activated carbon to absorb harmful gas

Electrical control system

1 PLC control, upper computer (microcomputer) dynamic simulation monitoring

Circulation system failure alarm function

3 time accumulation function of wearing parts