Characteristics and advantages of HV-80-JP supersonic flame spraying system

1, Solid cabinet design, fuel flow control area, pressure display area, electronic control area are modular layout, panel clear and easy to operate.
2. All imported valves, pressure switches, flow switches and sensors from Europe and America are of the same quality as those from Europe and America
3, The use of Japanese mitsubishi high-performance PLC control, after ignition automatically maintain oxygen and fuel, carrier gas flow output.
4. All the internal fuel, oxygen, carrier gas and cooling water connected on the equipment have the detection function to ensure that all preparation processes can be fully tested before ignition.
5. Monitor the running status of the equipment in real time. Once any part is found to be operating beyond the safe range, the whole system will stop sharply, send an alarm and provide fault information.
6. The equipment starts and stops automatically under the control of PLC, which reduces the possibility of operator's misoperation.
7. Communication interface is set up inside the equipment to control the operation of peripheral devices.
8. Signal shielding measures are adopted to protect peripheral devices from electromagnetic interference during high frequency arc ignition.
 

1. Performance index of supersonic flame spraying tungsten carbide
Hardness can reach: HRC70~80
Bonding strength: ≥90MPa
High temperature resistance: above 1200ºC
Surface roughness: Ra0.2
Strong corrosion resistance, not easy to deform
Coating thickness: 0.04mm~0.1mm
Straight line degree: 0.015mm-1000mm
Second, the application of supersonic flame spraying tungsten carbide in corrugated rolls
1. The application of thermal spraying tungsten carbide in corrugated roller
A. New corrugated roller sprayed with tungsten carbide
B. The old corrugated roller is transformed into a tungsten carbide corrugated roller
C. Repair of tungsten carbide corrugated roller The coating thickness of the new tungsten carbide corrugated roller is 0.05~0.1mm. When the coating is reduced after long-term use and cannot be produced, we will remove the residual tungsten carbide and repair it again, and the diameter of the corrugated roller will hardly change.
2. Processing technology of tungsten carbide corrugated roller
The process of tungsten carbide corrugated rollers is different from traditional corrugated rollers. First, the heat treatment hardness of the front substrate is different, and the precision of the tooth profile before spraying is higher. It must be completed on a fully automatic CNC grinding. Secondly, spraying technology is the key to ensure the hardness of tungsten carbide. And the quality of the subsequent polishing treatment, the most difficult to process is the polishing technology after spraying. Because the corrugated roller is different from the general workpiece, its tooth profile is unique and the surface hardness is extremely high (such as diamond) tungsten carbide, the traditional ordinary grinding wheel Grinding can't be done at all.
→Grinding →(intermediate frequency quenching)→sandblasting→preheating→priming→spraying tungsten carbide (thickness 0.05~0.06mm)→polishing and grinding-life of 20-50 million running meters;
3. Advantages of tungsten carbide corrugated roller
A. Tungsten carbide corrugated rollers are 3 to 6 times more durable than ordinary corrugated rollers.
B. Generally, the tooth height of the corrugated roller changes greatly, and the quality of the cardboard is unstable. The gap between the core paper and the rubber roller should be 0.1mm~0.2mm when the corrugated roller is new. Too much glue and too much water make the cardboard soft and easy to bend; the tungsten carbide corrugated roller tooth height changes little and long, and the quality of the paper board is straight and stable.
C. Generally, the middle of the corrugated roller is excessively worn and becomes concave, and it is no longer possible to produce wide cardboard, resulting in waste paper, because the two ends will be crushed or there will be no paste in the middle (degumming and bubbling). At this time, you have to go The two ends of the grinding roller are used to walk the wide cardboard and maintain the life of the corrugating roller; because the tungsten carbide corrugating roller is wear-resistant, there is no problem when the narrow paper is taken and then the wide paper is taken.
D. Generally, the corrugated roller wears quickly, so the original design of the tooth height is higher (large corrugation rate) to ensure the life; because of the wear resistance of the tungsten carbide corrugated roller, the low tooth height (small corrugation rate) and long life are designed from the beginning .
E. Generally, V-shaped corrugated rollers cannot be used for corrugated rollers, because if the corrugated top is small, it will be worn quickly and the cardboard will become softer and softer; tungsten carbide corrugated rollers do not have this problem because of wear resistance.
F. In general, the corrugated roller wears fast and a lot, and the diameter is much smaller after repair; the tungsten carbide corrugated roller has almost the same diameter after repair because it is wear-resistant and wears less. The most important thing is that the flute height of the tungsten carbide corrugated roll is almost unchanged during the entire life of the roll.