WANLONG
1. Before starting drilling, ensure that the tool is fully installed in place, without any looseness or improper clamping.
2. When using a magnetic base drill, make sure there are no iron chips under the magnetic base. The contact surface should be flat, and the machine must be stable and firmly magnetized.
3. Continuous cooling is required throughout the entire drilling process, from start to finish. Intermittent cooling may cause tool collapse due to overheating.
4. At the beginning of drilling, feed the tool slowly and steadily. After cutting in 1–2 mm, you can increase the feed rate. Reduce the feed speed appropriately when exiting the hole. Maintain a uniform feed during the cutting process.
5. When using carbide magnetic core drill bits (steel plate drill bits), the proper cutting speed should be above 40 meters per minute, and should not be lower than 30 meters per minute. As carbide is a high-hardness material, avoid collisions during storage and use, and prevent impacts during operation.
6. The sharp impact on the cutting edge of a newly purchased core drill bit may cause slight edge chipping. It is recommended to handle the first few holes carefully when using a new bit, and enter the material slowly to avoid chipping. After natural passivation of the cutting edge, the tool can be used normally, which can significantly extend its service life.
7. If the machine stalls or stops during drilling, turn off the power first. Then manually rotate the tool slightly to release the cutting edge from the cutting zone. Lift the motor and remove the bit. After confirming there is no abnormality, resume operation. If too many iron chips are wrapped around the drill body, retract the drill and use a hook to remove the chips.
8. For center pins and core material ejectors, ensure there is no significant wobble during use. If the center pin is bent, it should be replaced promptly. If the core material does not pop out after drilling, gently tap the bottom of the core to assist in ejection. If the core still does not eject, remove the drill bit and gently knock the core out through the shank hole. Take safety precautions and avoid touching the cutting edge during core removal.
9. When drilling deep holes and encountering high resistance, withdraw the bit multiple times to aid in chip removal. Ensure safety throughout the drilling process and take protective measures.
