Maintenance and maintenance methods for locks:
1. Always keep the lock body transmission parts with lubricant to keep the transmission smooth and prolong the service life. It is recommended to check once every six months or one year, and check if the fastening screws are loose to ensure the fastening.
2. During the use of the lock, periodically (half year or year) or when the key is not inserted smoothly, a small amount of graphite powder or pencil powder can be put into the lock cylinder to ensure the key is inserted and removed smoothly. However, do not add any other oil to lubricate to prevent the grease from sticking to the marble spring, causing the lock to not rotate and not open.
3. Always check the matching clearance between the lock body and the lock plate. The fit between the lock tongue and the lock plate hole is appropriate. The fit between the door and the door frame is preferably 1.5mm-2.5mm. If changes are found, adjust the position of the hinge or lock plate on the door. At the same time, pay attention to the thermal expansion and contraction caused by seasonal changes, to ensure that the clearance between the door and the door frame, the lock body and the lock plate is reasonable, so as to ensure the smooth use of the lock.
The use of diamond cord core drill bits must be done step by step according to the requirements of the onion, not to be rushed, and the drill tool assembly, deployment, and maintenance must be done well.
The characteristics of rope core drill pipe are "three highs and one low", that is, high drilling speed, long life of diamond bit, high time utilization rate, low labor intensity of workers, so it is widely used in geological prospecting, coal field exploration and other fields. Among the whole set of drilling tools, the most important and most valuable is the drill pipe. The quality of the drill pipe is directly related to the use of the advantages of rope core drilling, and is also vital to the accurate acquisition of geological data and the control of drilling costs.
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