How to repair the fracture of the alloy steel liner in the ball mill

The liner is the main component used by the ball mill to protect the cylinder body, which is very important for the ball mill.Many ball mill users have reported that the liner of the ball mill has a short service life and is easy to wear.So, how to repair the liner of the ball mill when it is worn and broken?

The liner and the steel ball are the two parts of the ball mill that are severely worn out, which is inevitable for them.But in the face of wear and even fracture of them, what measures should be taken to face them is what we should do.

Here, we mainly discuss issues related to the wear and fracture of the liner of the ball mill.For severely worn liners, there is no need to repair them, and they should be replaced in time; surfacing repair method should only be used for the liners if spare parts are scarce and the wear is not too serious.

1. Remove the liner and clean the surface of the liner until the bright metal leaks out.

2. Put a graphite plug in the bolt hole of the liner to ensure that the bolt hole will not become smaller after the alignment, so as to facilitate the fixing of the liner.

3. Place the liner to be repaired on the construction platform of the surfacing site and place it horizontally as much as possible so that the liner faces up.

4. Surfacing electrode, low hydrogen electrode.

5. Trim the work surface, remove debris such as welding slag and burrs around the liner, etc., and use manual arc welding for surfacing, so that the welding can be carried out by highly skilled and skilled workers.

6. The surfacing procedure first surfaces the steel surfacing layer, then the combined surfacing layer, and then the wear-resistant alloy butt welding layer. This multi-layer surfacing method can be used to repair non-alloy rigid cone ball mill liners, touch liners and other parts.Surfacing is divided into many narrow and small segments, and layered surfacing is carried out in order.After surfacing, the working surface state designed according to the liner shape, such as stepped and wave-breaking liners, must be smooth and smooth to minimize the amount of correction.

Although surfacing repair can solve temporary needs, it is not a long-term solution. After the repair is completed, the operator should pay more attention to the use status of the equipment during the use of the equipment, check frequently, and replace the new liner in time.

If you want to know more about ball mills, please contact Xingkuang Group.