Discretion is required.
Before treatment, use the nozzle air compressor to remove the dust and debris on the screw surface through high pressure air.
1, for ordinary screw, or precision screw with low surface and precision requirements, if the iron pin is attached to the screw, it can be removed by Angle grinder wire wheel, and rust and burr can be removed.
2, for the precision screw that requires no damage to the surface, if a small amount of iron pin is attached to the screw, it can not be removed or glued after using a rag around the screw knob, it is necessary to oil first (generally use kerosene immersion), and then use sandpaper to polish. If a large number of iron pins are attached to the screw and cannot be manually erased, it is recommended to discard, because the time and labor cost of repair far exceeds the value of the screw itself.
3, whether precision or ordinary screw, if the iron pin is
occluded
Precision screw with low surface treatment requirements, if a large number of iron pins are attached
Sleeve wire: The processing method of cutting the external thread on the round rod with die is called sleeve thread (also called sleeve wire).
Wire tool: die, die holder.
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4, if a large number of iron pins are attached for too long, resulting in rust on the screw, it is necessary to remove the rust before removing the iron pin.
Can own Taobao: rust remover
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1. First put the back cover of the watch shaft on it.
2. Use a screwdriver to unscrew the watch cover.
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3. Then grab the gears at the back of the watch with tweezers.
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4. Then turn the watch shaft, while using tweezers to clamp out the interlocking shaft around the gear.
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5. Then remove the gearbox with tweezers.
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6. Then clip out the gears in the table one by one.
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7. Then unscrew the screws next to the watch shaft.
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8. After that, the circular shell on the fixed watch shaft can be removed.
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9. After that, take out the watch shaft by hand.
Hello! If there is a plastic ring around the watch knob, it is usually fixed on the dial by pressing in or rotating. You can use a small tool, such as a knife or a toothpick, to gently snap the bulge around the plastic ring and try to remove it while pulling or rotating it vigorously. It should be noted that the operation should be careful and gentle to avoid damaging the watch or plastic ring. If you find it too difficult to operate, it is recommended that you seek professional watch repair services.