Today we analyze some common problems of stainless steel lock:
1. Do you choose screws and nuts of the same material grade?
If the answer is yes, it is recommended to use different grades in screws and nuts, such as 304 with 316, etc. However, it should be noted that the stainless steel grade selected must still meet its requirements for rust and corrosion resistance. Also, it is the most common cause of locking when locking the flange. It is assumed that you have paid attention and acted under the above-mentioned points, including the use of coupons, coating nuts (longer nuts can also be recommended, Such as GB6170 or DIN934), screw the nuts diagonally, slowly, and sequentially to the proper tightness, etc. If it still cannot be solved, it is often not removed after pre-locking. Finally, you have to pre-lock the flange The carbon steels nut is temporarily used for the disk device, and the stainless steel nut is used when the final lock is officially locked, to find a balance between beautiful appearance, rust resistance, and non-locking.
2. It is recommended that customers use a sleeve torque wrench in use, as the torque will be deformed if the torque is exceeded.
3. When using a stainless steel lock, do you always lock the nut at a fixed speed?
If you are using stainless steel for the first time or are not familiar with the process of stainless steel products, you should ask your supplier about the relevance of stainless steel. Generally speaking, slowing down the speed of locking can greatly reduce (or even completely avoid) the chance of locking. Because heat energy often occurs when the lock is locked, when the heat energy increases, the probability of lockup will increase. When in use, the speed of locking stainless steel fasteners should be lower than the speed of locking carbon steel.
4. Is the screw or nut lubricated before locking?
If the answer is "No", it is recommended to use butter, molybdenum disulfide, graphite, mica, or talc to lubricate the internal and external teeth to reduce the occurrence of lock-up. Wax dipping is also an effective way of lubrication. A nut that has been dipped in wax with a stainless steel lock will have a lubricating film between the nut and the screw.