Powder metallurgy gears are important components in mechanical transmission systems that transmit motion and power, and are also widely used transmission components. During the use of powder machinery, the noise of powder metallurgy gears can cause great harm to producers!
Eliminating resonance: Only when powder mechanical resonance occurs, can there be strong noise of over 100 decibels that can be generated due to superposition. The general performance is: strong vibration, low noise, some weak vibration, but high noise; Some have high vibrations and noise. Obviously, by eliminating resonance, the noise will also disappear.
Sound absorbing material: It is also a common and effective sound path treatment method, which uses sound absorbing material to wrap the noise source and powder mechanical pipeline. Due to the fact that noise can propagate over long distances through fluid flow. Therefore, as long as the sound-absorbing material is packaged and thick walled pipes are used, the effectiveness of noise reduction will end there.
The quality of the coating and the temperature of the curing furnace are crucial, and the heating method usually uses hot air circulation heating, which can be divided into direct heating and indirect heating. Direct heating adopts electric heating spiral fin type and gas type direct heating methods.
Direct heating: The spiral fin type furnace has uniform temperature and strong workpiece adaptability. Due to the use of solid-state relays to regulate temperature, the temperature deviation in the furnace is small. But the heating time is slow and the power is high. Due to the use of hot air circulation heating, it is easy to cause secondary pollution of dust during the solidification process, and the furnace occupies a large area.
The gas type has a fast heating speed and high thermal energy conversion rate. The furnace temperature control adopts proportional adjustment control, and the temperature control deviation inside the furnace is small. Because the burner flame directly burns in the combustion chamber, the solidification process is prone to secondary pollution of dust and exhaust gas.
Indirect heating method (fuel oil, gas): Indirect combustion heating requires a heat exchange device (heat exchanger), and the flame burns in the furnace of the heat exchanger. Therefore, the heat exchanger material can be heat-resistant stainless steel. Due to the combustion of the burner flame in the heat exchanger, there will be no secondary pollution of dust and exhaust gas during the solidification process, and the temperature is uniform. Temperature control can be achieved through two-stage fire control and proportional adjustment control.
Another heating method for the curing furnace is direct infrared heating, which can also be divided into far infrared and high infrared. Both methods can achieve heating in the curing furnace of powder coating equipment.
Each coating equipment has specific performance characteristics, and we are gradually exerting their role in order to achieve greater efficiency. Only by striving for excellence can the enterprise go further and further.
Eliminating cavitation: cavitation is the main source of fluid dynamic noise. During cavitation, the rupture of bubbles produces high-speed impacts, resulting in strong turbulence in local areas and generating cavitation noise. A wide frequency range produces a "grid" sound, similar to the sound produced by fluids containing sand and gravel. Eliminating or reducing cavitation is an effective way to eliminate or reduce noise.
For powder machinery, the effective way to handle noise is to control the noise source and fundamentally eliminate or reduce noise. This requires the purchase of low noise pumps and machinery. If the noise is not very loud, the use of low noise sleeve valves can reduce the noise to 20 decibels