Mining granite with a rope saw has the following advantages:

1. Wide adaptability, rope saw is suitable for all types of mines, and flame cutting is only suitable for granite mines with high quartz content and few cracks.

2. Strong function and high efficiency, the first mining depth can reach l0 ~ 20m or even deeper, flame cutting is generally within 10m; Secondly, the cutting speed is fast, generally can reach 3 ~ 4m2 / h, is 2 ~ 3 times of flame cutting.

3. Rope saw can be vertical, horizontal, inclined plane and other directions of cutting, but also blind cutting, and flame cutting can only be vertical cutting.

4. High yield, low comprehensive cost, first of all, the rope saw section is very flat and will not cause any internal injury to waste material, second, saw seam is small, only about 11mm, will not cause a waste of resources; The flame cutting surface is rough and uneven, and causes certain internal injury to the waste material, and the saw seam is large, generally 100 ~ 300mm, resulting in a great waste of resources, and the mining cost is also high.

5. Safety and environmental protection, rope saw mining without noise and dust, does not affect nearby residents and other operating surfaces, and high degree of automation, separated control, low labor intensity, high safety; The noise and dust of flame cutting are very large, seriously affecting the operation of nearby residents and other workers, and the labor intensity of workers, relatively low safety. To sum up, in today's shortage of resources and soaring oil prices, mining granite with rope saw has significant economic and social benefits.

Factors restricting the production and application of diamond rope saw Although the application of diamond rope saw mining mines have incomparable advantages over traditional mining methods, but in practical production, the application of new diamond rope saw also has a series of technical difficulties, including high sawing efficiency, long life, low price and high reliability. Diamond rope saw is a fragile and easily damaged system. As a ring chain, the weakest link must be strengthened as much as possible. The reliability of diamond rope saw is a great problem. The damage of the rope saw will lead to the failure of the whole tool, or greatly reduce its life, which will have a great impact on the design of tools and the production of diamond rope saw.

Nowadays diamond rope saw production has not been mastered by many diamond tool manufacturers. On the one hand, this is because the production of diamond rope saw is more complicated than the production of simple circular saw blade. On the other hand, the production of a suitable rope saw for cutting natural stone requires close cooperation and cooperation between the diamond rope saw manufacturer and the end user. Various factors associated with diamond rope saw include: the sawing life of beads, the sawing speed of beads, the distance between beads on the rope saw, mold design, the life of steel rope under normal working conditions and other technical difficulties.

(a) the most common problems 1. Rope saw can not be sawed and the use of the most commonly encountered is incorrect selection of diamond (often choose too good diamond), tire body, bead spacing, mold design or wrong application parameters. For example, we choose too high diamond density or too good diamond, its sawing performance is not very good. The diamond will be resistant to fragmentation, making it difficult to create a new sharp edge.

2. Saw fracture saw wire rope fracture, usually is to use the wrong application parameters or rope saw the poor quality, which means that the plastic/rubber and combination between diamond beads not firm, lead to debris into diamond saw rope, quickly magma or cuttings in beaded steel body with steel rope part contact and friction between steel rope, steel rope connecting thread began to break, It could also be due to the wrong application of a binding agent. The fracture of the steel rope may also be caused by the wrong selection of wire rope, beaded steel body, and poor heat treatment after injection molding.

3. Bead spalling If part of the bead cutting layer is spalling off from the bead steel body, it is usually the improper selection of bead body, or the use of the wrong sintering parameters. Often incorrect cold pressing processes are also to blame for spalling. Sometimes due to improper dewaxing process, the metal tire and beaded steel body between the infiltration of paraffin. Sometimes the problem is also related to improper cleaning of beaded steel bodies.

4. Loose beads and loose beads are usually a sign of problems during injection molding. It may also be improper selection of wire rope, or diamond beads internal contamination, improper cleaning, which will lead to beads and injection/injection rubber combination is not strong.

In general, there is a knack for the manufacture of diamond rope saws. It is more demanding than the manufacture of diamond saw blades. Like a circular chain, the manufacture of diamond rope saws consists of many different manufacturing processes, and if something goes wrong in one process, the value of the diamond rope saw will be jeopardized. Many companies have no experience in this area, so it will be some time before there is a strong foundation for a diamond rope saw with good sawing function.

In recent years, the quality and technology of diamond bead ropes produced by domestic manufacturers are improving steadily, and have reached or approached the advanced level of imported similar products. Its main performance in the following aspects:

One is the improvement of wire rope quality, because of the widespread use of imported high quality wire rope, to solve the problem of wire rope easy to break, directly improve the durability of beaded rope;

Second, the bead spacing to maintain the improvement of material quality, now widely used high strength plastic, rubber, making the bead and wire rope more firmly, to solve the problem of loose beads, channelling beads, so that the quality of the bead rope greatly improved.

Three is the improvement of the quality of diamond beads, whether electroplated or sintered beads, whether in cutting marble or cutting granite, its stability, wear resistance has been greatly improved, greatly improving the life of the string of beads. Now the diamond rope saw has developed marble mine rope (spring fixed), granite mine rope (rubber fixed), combined rope saw rope (injection molding fixed, used for granite wool board cutting) and other products, and according to the special needs of customers to develop different cutting programs