1. When using stainless steel screws, is it always locked at a fixed speed?
If you are the first to use an operator who may not be familiar with stainless steel screw technology, you should consult your supplier about the characteristics of stainless steel. In general, slowing down the speed of lockdown can significantly reduce (or even completely avoid) the timing of lockups. Because heat is often on the locked side, when heat energy is added, the chance of locking up will also increase. In use, the speed of locking the stainless steel screw should be lower than the speed of locking carbon steel.
2. Is it smooth screw or nut before locking?
If the answer is “no”, use of butter, molybdenum disulfide, graphite, mica, or talc may be advocated to smooth the surface of the teeth to reduce the incidence of lock-up. Stopping is also a useful slippery method. By deducting the treated nut, it will be like a smooth film between the nut and the screw.
3, is it right to use the same material grade screws and nuts?
If the answer is yes, it may be advisable to deploy different grades of screws and nuts, such as 304 with 316 and so on. However, it must be noted that the grade of stainless steel chosen must also meet its own rust and corrosion resistance requirements.
In addition, it is the most common case of lock-up when the flange is locked. Assume that you are now paying attention to and proceeding according to the above points, including the use of washers, coating nuts (it is also advisable to use longer nuts, such as GB6170 or DIN934), nuts in diagonal order, and slowly rotating them in order Tightness and so on, if it is still impossible to handle, it is often not unloaded after pre-locking. In the end, you are required to temporarily use the carbon steel nut when pre-locking the flange device, and then use it until it is officially locked. Stainless steel nuts find a balance between beautiful rust resistance and lock-in