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Roller texturing shot blasting machine

Author: admin Source: This station Time: 11:58, March 22, 2018
 Roller texturing shot blasting machine
The equipment is mainly used for high-quality shot blasting and texturing on the roller surface. Its principle is to use the high-speed rotating shot blasting device to accelerate the high-hardness steel sand through the shot blasting device to the set speed according to the predetermined procedure, and then cast it onto the roller surface, resulting in numerous disordered and certain roughness reinforced sand surface on the roller surface. The strong and high-speed impact of steel sand on the surface of the roller results in the formation of cold work hardening on the surface of the roll, and the hardening layer is more compact, which will not damage the metal fiber structure of the roll surface and increase the contact fatigue strength of the roller surface.
This kind of textured roll with proper surface roughness, uniformity and high strength can be directly used for rolling and leveling of cold-rolled sheet. It can increase the roll speed, improve the shape of the strip, reduce the scratch on the plate surface, and help to overcome the adhesion during annealing. The textured plate rolled by this kind of textured roll has good elongation and formability, excellent paint brightness and strong chemical coating. It is an excellent material for automobile, household appliances, electronic devices and decorative plates.
operation mode:
1) The bearing blocks at both ends of the roller to be textured are protected by a polyester sleeve, which is suspended on the roller drive trolley to start the roll trolley to move and transport the roll to the ejection chamber.
2) The steel sand is accelerated by the shot blasting device, and is evenly and intensively shot onto the surface of the roll. Under the strong impact of the steel sand at high speed, the surface of the roll will produce a small plastic deformation, forming a fine and uniform impact pit. In this way, the speed of shot blasting on the surface of the steel roller is not only ensured by the speed regulation of the roller, but also by the speed regulation of the steel roller. The shot velocity of shot blasting machine is adjustable by frequency conversion.
3) Shot blasting machine During operation, the steel sand is thrown onto the roll and falls on the bottom of the ejection chamber. The spiral conveyor at the bottom of the ejection chamber transports the steel sand to the bucket elevator, which lifts the steel sand to the steel sand air washing separator on the top of the machine, and separates the dust and steel sand by air washing.
4) The clean and useful steel sand flows into the vibrating screen. Through the vibrating screen, the steel sand is divided into two specifications: 0.7mm and 0.3mm. 0.7mm and 0.3mm steel sand are respectively stored in two silos, and the lower part of the silo is equipped with steel sand flow control valve for pneumatic control. The supply and stop of steel sand are controlled automatically. The flow rate of steel sand can be adjusted manually.
5) The dust and steel sand produced during shot blasting, dust separated from air washing separator, dust flying from vibrating screen and bucket elevator are attracted by the fan to the core barrel pulse back blowing dust collector for filtration, so as to prevent roller pollution and maintain a clean working environment.
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2、 Main technical parameters
1. Application scope of roller texturing shot blasting machine
Roll diameter: Φ 260mm ~ Φ 600mm
Roll length: ≤ 4200 mm
Roller texturing length: ≤ 2000mm
Maximum roll weight: ≤ 4000kg
2. Surface texturing roughness after shot blasting: ra0.5-3.5um ± 15% (adjustable)
3. Centrifugal impeller
Quantity 1
Diameter: Φ 420mm
8 blades
Blade width 100 mm
Drive motor power (motor frequency conversion) 15kw
The rotating speed of shot blasting machine is 0 ~ 2900prm
4. Shot blasting quantity 250kg / min
5. Processing quantity: 3 / hour
6. Compressed air consumption: 30m3 / h 4 ~ 6kgf / cm2 (dry and clean)
7. The first loading amount of steel shot is 1000kg
8. Recommended steel shot size angular steel sand qg-10h
9. The installed capacity is about 41kw
10. Noise ≤ 92dB (a)