1, increase the stiffness method of oscillation and slight vibration, can increase the stiffness to eliminate or reduce, such as the use of large stiffness of the spring, the use of piston actuators and other means are feasible. 2, increase the damping method to increase the damping that is increased friction on the friction, such as the sleeve valve spool can be used "O" ring seal, with a larger friction graphite filler, which to eliminate or reduce the slight vibration or Have a role 3, to increase the size of the guide, reduce the gap with the shaft-type valve generally oriented guide size is small, all valves are generally larger with the gap, 0.4 ~ lmm, which is to produce mechanical vibration is helpful. Therefore, when a slight mechanical vibration occurs, the vibration can be weakened by increasing the guide size and reducing the mating clearance. 4, to change the shape of the throttle device to eliminate the resonance method due to the so-called vibration source valve occurs in the high-speed flow, the rapid changes in pressure orifice, changing the shape of the throttle can change the vibration source frequency, resonance is not strong when compared Easy to solve. The specific method is to be within the scope of the opening of the valve core turning 0.5 ~ 1.0mm. For example, a self-operated pressure regulating valve is installed near the factory area of ​​a factory. The whistle of the resonance causes the worker to rest. After the 0.5mm spool surface is dropped, the resonance whistle disappears. 5, replacement of throttling pieces Elimination of resonance method with 4.5 in 4), but is to replace the throttling pieces. The methods are: ①replacement of flow characteristics, log linear, linear change logarithm; ② replace the spool form. Such as the shaft plug into a "V" shaped spool, the two-seat valve shaft type into a sleeve-type; will open the window sleeve to play a small hole sleeve. If a nitrogen fertilizer plant a DN25 two-seater valve, the valve stem and spool connections often broken, we confirmed that the resonance, the linear characteristics of the spool to the logarithmic spool, the problem is solved. Another example is an aeronautical institute laboratory with a DN200 sleeve valve, the valve plug can not be cast with a strong rotation, the opening of the sleeve to a small hole to the sleeve, the rotation disappeared immediately. 6, the replacement of the type of control valve to eliminate resonance Different structure of the control valve, the natural frequency of natural, replacement valve is the fundamental way to eliminate resonance the most effective way. A valve resonates very strongly during use - strongly vibrates (can damage the valve in severe cases), rotates strongly (even the valve stem is shaken and broken) and produces strong noise (up to over 100 dB) Valve, as long as it replaced a valve with a large difference in structure, immediate effect, strong resonance miraculously disappear. Such as a vinylon plant expansion project selected a DN200 sleeve valve, the above three phenomena exist, DN300 pipe followed by the valve plug rotation, the noise 100 dB, the resonance opening 20 ~ 70%, consider the resonance open Degree, use a double seat valve, the resonance disappears, put into operation normally. 7, to reduce the cavitation vibration method due to cavitation bubble rupture and cavitation vibration, naturally should reduce the cavitation on the way. ①Let the bubble burst impact energy does not act on the solid surface, especially the spool, but to liquid absorption. Sleeve valve has this feature, so you can change the spool plug sleeve type. ② to reduce cavitation all the ways, such as increasing the throttling resistance, increasing the pressure of systolic orifice, grading or series decompression. 8, to avoid the wave wave hit the wave method of external shock wave vibration caused by the valve, which is obviously the normal operation of the control valve should be avoided, if such a vibration, it should take appropriate measures.
CNC Turning Parts
CNC turning is mainly used to process workpieces of revolving bodies, but sometimes it is also possible to clamp workpieces by customizing fixtures to process non-revolving products, such as planes, grooves, etc. Compared with manual turning and automatic turning, CNC turning has the characteristics of high efficiency and high precision. Moreover, with the development of science and technology, the requirements for workpieces are getting higher and higher, and more complex and higher precision workpieces need to be processed. In order to deal with such workpieces, multi-axis linkage CNC lathes have appeared, and multi-axis linkage turning machining usage is becoming more and more common.
SCZY has multiple three-axis CNC lathes, as well as multiple 4-axis linkage and 5-axis linkage CNC lathes, we can process complex-shaped rotating parts, usually the tolerance can reach ±0.01mm (specifically, it depends on the product material and structure. ), if we need better precision requirements, we can cooperate with the grinding machine for finishing, which can achieve a high precision of ±0.002mm. Our processing range includes the processing of stainless steel, alloy steel, special steel, ordinary steel, aluminum, copper, plastic and so on. Here are some CNC turning products we have processed:
Cnc Turning Parts,Cnc Turn-Mill Machining Parts,Cnc Turning Milling Parts,Turn-Mill Machined Parts,Turning Metal Parts
Shenzhen SCZY Technology Co.,Ltd , https://www.szsccasting.com