Slip ring purchase skills

  

Generally, when you buy a conductive slip ring, you can't see the inside, then you can only rely on the mechanical parameter form that the manufacturer gives you, just want to buy a computer, then how do you look at these parameters? Isn't all the parameters bigger as possible? Which parameters must be taken care of? Don't be confused, let us uncover the mystery now!



Focus on parameter one: working speed



    A very important parameter in the mechanical parameters of the conductive slip ring is the number of working revolutions. This mechanical parameter is indispensable when we purchase the slip ring, because it affects the operation of the entire equipment, too high and too expensive. , high-speed conductive ring, the number of channels is limited, the two can not have both. Therefore, when choosing the right slip ring, we need to weigh all the factors to choose the appropriate number of slip rings. Usually, the unit of revolutions is expressed by how many revolutions per minute, and the special slip ring that transmits large currents is naturally low, the high is tens of thousands of revolutions per minute, and the low is one revolution per minute.



Focus on parameter two: working humidity



     The working temperature is the lowest temperature and the highest temperature at which the slip ring can work under normal working conditions. As we all know, the temperature mainly has a close influence on the electrical conductivity of the slip ring. Too low may cause the resistance of some conductive media to appear very large. The change, too high, will cause some plastic parts to melt. In general, the normal operating temperature of the slip ring is between -40 and 80 degrees.

  

Humidity is also a very important influence of mechanical factors insulation resistance of the slip ring, in the high humidity environment, passages spaced too close when high voltage breakdown easily cause a short circuit or a more serious accident, the humidity Can not be too high, when purchasing, must first investigate the humidity range under the working environment of the equipment, so as to avoid unnecessary safety production accidents.



Focus on parameter three: work contact material



       The contact material plays a key role in the performance of the entire slip ring. The contact material needs to have several important characteristics, such as wear resistance, high temperature resistance, low resistance, etc. The slip ring needs 24 hours of uninterrupted operation when working. If the wear resistance is not good, it is easy to cause aging, damage and other problems, and finally lead to poor contact, signal transmission is not smooth. The same is true for high temperature resistance. Friction generates heat. When rotating at high speed, the heat generated by friction will cause the contact material to have a particularly high temperature. If the temperature is not high, the contact material will melt easily. The conductivity is even more inconspicuous, and the contact contact area cannot be too large, so that very good electrical conductivity is required.



Focus on parameter four: insulation resistance and compressive strength



       This parameter is very important, because on the one hand, the control of the production process, especially when installing the brush line, adjust the pressure of the brush line, so that the pressure is not too much or too small, and the long-term experiment is about 10 gram. Suitably, it can meet the requirements of contact resistance, and the friction will not affect the life too much; if the main reason for failing to pass the test is: short circuit, conductive medium communication between the loops, or short circuit caused by wire damage of the wire, or It is caused by the partial ring in the processing engineering; the above are all matters needing attention in processing and production. There is also a decrease in insulation performance. The decrease in insulation performance may be the cause of the material. It may also be that there are mainly cracks, holes, etc. when filling the glue. When the humidity is too high, the insulation performance is degraded due to moisture entering. These and the quality problems that cause the product, but also pay attention to the aging treatment of the metal ring installed spindle, while pressing the pressure to be fully released, without causing the loop deformation or crowding, by using 800 The volt insulation withstand voltage test tests the adjacent two paths of the insulation strength between the loops, and the result is the insulation resistance and the withstand voltage.




       The electrical and mechanical parameters of the conductive slip ring are a very important indicator for the conductive slip ring. In the production process of the slip ring, these electrical parameters should be taken seriously, and when the slip ring is selected and the plan is formulated. It is necessary to evaluate the environment and select products with suitable electrical parameters.