Diamond wire saw advantages and technical difficulties

The advantage of using a wire saw for stone mining Compared with the traditional “blast + flame cutting” mining method, the use of wire saws to extract granite has the following advantages:
1. Wide adaptability, wire saw is suitable for all types of mines, and flame cutting is only suitable for granite mines with high quartz content and low cracks.
2, strong function, high efficiency, first deep mining depth can reach l0 ~ 20m or even deeper, flame cutting is generally only within 10m; followed by cutting speed, generally can reach 3 ~ 4m2 / h, is the flame cutting 2 ~ 3 Times.
3, wire saw can be vertical, horizontal, inclined and other directions of cutting, but also blind cut, and flame cutting can only be vertical cut.
4, the high rate of finished products, the overall cost is low, the first section of the rope saw is very smooth and does not cause any internal damage to the block, followed by a small saw, only about 11mm, will not cause waste of resources; and the flame cutting section rough and uneven, There is a certain amount of internal injuries to the block, and the kerf is large, typically 100 to 300 mm, resulting in a huge waste of resources and high mining costs.
5.Safety and environmental protection, rope sawing is free from noise and dust, does not affect nearby residents and other working surfaces, and has a high degree of automation. It is separated and operated, workers have low labor intensity and high safety; and flame cutting noise and dust are very large. Seriously affect the operation of nearby residents and other workers, and the labor intensity of the workers is large and the safety is relatively low. To sum up, in today's increasingly scarce resources and soaring oil prices, the use of wire saws to extract granite has significant economic and social benefits.
The various factors associated with diamond wire saws include various technical difficulties such as the sawing life of the beads, the beading sawing speed, the pitch of the beads on the wire saw, the mold design, the life of the steel wire rope under normal working conditions, and the like.

The most common problem
1. The most frequently encountered with wire saws that cannot be sawed or used is incorrect choice of diamond (often too good diamond selection), carcass, bead spacing, mold design, or incorrect application parameters. For example, we use too high a diamond density or too good a diamond, and its sawing performance is not very good. Diamonds will not break easily, making it difficult to create new sharp edges.
2. The saw rope is broken When the saw rope is broken, usually the wrong application parameters are used or the quality of the saw rope is too bad. This means that the plastic/rubber and diamond bead are loosely bonded, leading the cuttings into the diamond saw rope. Quickly the magma or cuttings partially contacted and rubbed the steel wire between the beaded steel body and the steel wire rope, and the wire rope connection thread began to break, which may also be due to the misuse of the binder. Steel rope breakage may also be due to the wrong choice of wire rope, beaded steel body, heat treatment after injection molding is not good.
3, beaded off If the bead cutting layer part peeled off from the beaded steel body, usually the wrong choice of carcass, or use the wrong sintering parameters. Incorrect cold pressing processes are also commonly used to cause peeling. It is also possible that paraffin is infiltrated between the metal carcass and the beaded steel body due to an improper dewaxing process. Sometimes this problem is also related to improper cleaning of beaded steel.
4, beaded loose loose loose beads, combined with not strong, usually a signal of injection molding problems. It may also be due to improper use of wire ropes or contamination of the inside of the diamond beads. Improper cleaning may result in loose bonding between beads and injection/rubber.