For the treatment of ore with large hardness and coarse grain size, it is necessary to have a large impact force, and it is necessary to install a steel ball with a larger size; the soft ore of the treated ore is smaller in size, and the finer particle size is required to be ground. Load a smaller size steel ball. The ball mill on the production site is loaded with balls of various spherical diameters, and the materials composed of different sizes of ore are processed according to a certain proportion. In theory, only by ensuring that a certain proportion of the balls can be adapted to the particle size composition of the material to be ground can a good grinding effect be obtained. The ratio of steel balls is a relatively complicated technical problem. Therefore, the production plant must be based on actual conditions, after a long-term investigation and research to find a reasonable ratio of loading. The following is a list of empirical figures for the relationship between ball diameter and grain size, which can be used as a reference: Relationship between ball diameter and grain size Vertical Drilling And Tapping Center is mainly used to process plate, disc, shell, mold and other parts with high precision, Cnc Drilling Machine,Cnc Machining Drill,Drilling And Tapping Center,Drilling Metal Machine Cnc Tengzhou Borui CNC Machine Tool Co,.Ltd , https://www.br-cnc.com
multiple processes and complex shape. It can continuously complete milling, drilling, reaming, reaming, boring, tapping and precise machining of two-dimensional three-dimensional curved surface and inclined plane in one clamping process. The processing is programmed and the production cycle is shortened, so that users can obtain good economic benefits.
1. the foundation, column, main spindle box, cross sliding table, worktable and other parts were designed with high strength casting technology.
2. the inner metallographic structure is very steady.
3. the casting parts show rational geometry composition through machine tool kinetics and finite element analysis.
4. the basic parts have high steel nature by collocating with the reinforcing rib.
5. with the wide foundation, box-shaped cavity column, broaden & lengthening sliding base and advanced design of mechanics of materials, the weight capacity can be ensured.
6. High speed and high precision spindle, max. can be 24000rpm:
7. CE Standard and CE Certificate;
The size of the steel ball depends on the physical and mechanical properties of the ore and the ore particle size composition.
Such cnc tapping center has following features:
Ball diameter
(mm)
120
100
90
80
70
60
50
40
Feeding granularity
(mm)
12-18
10-12
8-10
6-8
4-6
2-4
1-2
0.3-0.1