For sanding machine, grinding media usage volume from 80% English Start, and then based on the material temperature or the cooling water temperature of the material to increase or decrease the amount of grinding media, generally speaking, when the temperature exceeds the allowable range, it should be reduced grinding media consumption. When the temperature is below the permitted range, before increasing spindle speed, it can give priority to increase the amount of grinding media. Typically the ink discharge temperature in the range of 50 ~ 70 ℃ is permissible. Adjust the amount of media you can use this yardstick, some stability for the poor should pay attention to control the ink.
When sanding machine often because the valve is blocked and results in the production process requires downtime to clean up, and often a lot of the operator does not know how to self-cleaning. In fact, sander valve obstruction is a common fault, repair method is relatively simple, general operatives should be learning in a problem of when to carry out their own repairs to avoid delays in production.
1, for some easy precipitation and contains some of the solid particles of the medium and the use of it is ordinary valves to adjust, often in the orifice, there is congestion at the guide, you can plug at the bottom of the lower valve cover external flushing gas and steam. When the valve is blocked or jammed generated, open external gas or the steam valve, which can be done in the case of flush valve does not move, so that the normal operation of the valve.
2, there are a number of small-diameter valve, especially ultrafine flow control valve, its throttle gap especially small, medium can not have a little bit of debris, in which case blockage, preferably before the valve install a filter on the pipe, so that the medium can be passed. When the regulator valve positioners use locators will not work properly, its pneumatic orifice blockage is one of the most common faults. Therefore, when we work with a locator, must deal with the gas source body, commonly used way is to install the air filter regulator on the positioner front door gas supply pipelines.
3, in the line in the sand mill welding slag, rust, scum, etc. If you are in the orifice, the guide parts under the bonnet balance hole clogged or jammed, is likely to make the spool surface, the guide surface indentation and other produce will be severe strain and scratches the sealing surface. Wherein the blocking problems often occur in the new system into operation and production stage after the overhaul, which is a relatively common fault. If this this time because of obstruction caused by other problems, we need to breaking horizontal grinder housing for internal cleaning work, the first thing to get rid of the residue, and then the sealing surface damage should be milled at the same time point sand the bottom plug is opened to flush out from the balance hole in the bonnet into the slag material inside, and pipeline flush. Let control valve fully open again when production operations, medium flow for some time before normal operation.