7 ways to remove a broken tap


1. Weld an iron rod on the broken object and then unscrew it.

Disadvantages: a. Too small broken objects cannot be welded; b. Extremely high welding skills are required, and it is easy to burn out the workpiece; c. The welding is easy to break, and the probability of removing the broken objects is very small.

2. Tap with a cone-shaped tool that is harder than the broken object.

Disadvantages: a. It is only suitable for brittle cut-in objects, breaking the cut-in object and then slowly picking it out; b. The cut-in object is too deep and too small to be removed; c. It is easy to damage the original hole.

3. Make a hexagonal electrode with a diameter smaller than the diameter of the broken object. Use an EDM machine to machine a hexagonal countersink on the broken object, and then use an Allen wrench to unscrew it.

Disadvantages: a. It is useless for rusted or stuck broken objects; b. It is useless for large workpieces and cannot be placed in the EDM machine table; c. It is useless for too small broken objects; d. Time consuming and troublesome .

4. Use the electrode smaller than the broken object directly, and use the EDM machine.

Disadvantages: a. It is useless for large workpieces and cannot be placed on the table of EDM machine tools; b. It is time consuming; c. It is easy to deposit carbon when it is too deep and cannot be hit.

5, hit with alloy drill

Disadvantages: a. It is easy to damage the original hole; b. It is useless for hard broken objects; c. The alloy drill is brittle and easy to break.

6. Now there is a portable hand-held electric spark machine designed and manufactured based on the principle of electrical processing. It can easily remove broken screws and broken tap drill bits, which is a long time.

7, make a tool yourself, use three pins to insert the tap to remove debris, and of course this method can only be used for straight groove taps

Get the latest price? We'll respond as soon as possible(within 12 hours)