Ball Mill cracking causes and treatment

Ball mill cylinder body is one of the ball mill main working parts, cylinder work besides the grinding medium under static load, also by the impact of the grinding medium. Ball mill work process, can appear sometimes cylinder cracking phenomenon, this is what reason is caused? Ruiguang mechanical engineer to explain the specific reasons for us.

Analysis:

1, low welding quality, poor quality steel, caused by insufficient bending strength;

2, loading excessive force over the design, overloading, causing cracking Ball Mill;

3, the device uses a long time, the individual parts wear out and cause cracking.

Treatment:

A cleaning plate cracks, the cracks found two endpoints, at the endpoints of each drill a 5 ~ 6mm, as the hiatus ended, to avoid cracks continue to extend;

2, split air gun or arc torch cutting steel inner and outer sides of the cracks reach the cam groove 60 °. In order to reduce barrel distortion, double-sided groove bottom should be separated by 2mm, do not get through;

3, the choice of electrode 41 (or other appropriate welding grade) in an oven to 250 ℃, immediately after removing welding two triangular slot in the cylinder wall and the outer wall of the solder tank filled triangle;

4, the cylinder wall has two welded split off and re-welded full;

5, if the crack is too long to be segmented welding.

The pressure of ball mill cylinder and ball impact are large, and the rotation of the cylinder, so the cylinder is generated on the alternating stress, therefore, it must have sufficient strength and rigidity. Long-term operation of the ball mill is stopped when the length of the barrel is not the same, which is caused due to the different thermal expansion and contraction caused by the temperature of the cylinder, therefore, the design, installation and maintenance of the heat must be taken into the cylinder or cooling characteristics.

According to the above analysis, Ruiguang hope to be able to help you quickly find the cause of the ball mill cylinder cracking, and resolved, avoid the shell cracking and affect the normal operation of ball mill for a long time.