Granite marble quarrying application of diamond wire saw
Diamond wire saws are not only widely used in the quarrying of marble, but also in the separation and cutting of hard rocks such as sandstone and granite. It is not only used for open-pit mining, but also for the mining of narrow underground veins and underground gold mines in South Africa that are at risk of explosion. The main application of diamond wire saw is mining blocks in mines, including all stone mining such as marble and granite. When mining stone with diamond wire saw, it has the advantages of high yield, good processing quality, not easy to damage the blocks, and less pollution during the mining process. It has become an indispensable tool for mining in western economically developed countries. This advanced mining method is increasingly used in many developing countries.
Using the beaded wire saw to mine mines has the advantages of strong adaptability to the mine space and landforms, small slits, fast sawing speed, and large block size, which can completely avoid the waste of resources and noise caused by traditional mining methods such as blasting and flame. , pollution, energy consumption and other shortcomings, to achieve high-efficiency, environmental protection and energy-saving green mining.
Quarry block shaping
More regular stone blocks or slabs have higher value. Because the beaded wire saw has the characteristics of being able to process irregular stones that are difficult to process with conventional tools. Therefore, it is widely used in the plastic processing of stone processing plants. Compared with frame saws and diamond circular saw blades, this technology has higher cutting efficiency and larger cutting area, and has low noise and no vibration. It can also perform curved surface modification and obtain a smooth cutting surface.
The shaping of stone blocks is usually done in mines or processing plants. Large blocks can be shaped with a beaded wire saw. However, considering the performance and processing cost of the beaded wire saw, it is currently mainly used for the shaping of marble mine blocks. For granite blocks, beaded wire saws are less often used for shaping.
Shaped granite and marble cutting
The diamond beaded wire saw used in the processing of special-shaped stone has the characteristics of stable cutting, high efficiency, smooth cutting surface, precise contour of the processing surface, standard size, small slit, and high yield. The diamond wire saw can also process various specifications of stone arcs, special-shaped products, etc. The processing of special-shaped stone by wire saw is one of the CNC stone processing technologies with the highest technical content at present. Although it has only a development history of more than ten years, it has become the main equipment for processing high-value-added special-shaped stone products.
Beads on a diamond wire saw
The main production methods of diamond beads can be divided into two categories according to the manufacturing method: electroplating molding and powder metallurgy sintering molding. And the latter dominates. Brazed diamond beads have also been successfully fabricated by brazing methods, but they have not been used on a large scale yet.
Introduction to sintered beads
The sintered beads can adjust the wear speed of the carcass and the wear speed of the diamond abrasives by adjusting the proportion of the metal components in the carcass or selecting diamond abrasives of different grades, particle sizes and concentrations, so as to produce beads with different cutting heights and spaces. In order to adapt to the cutting of different materials. Sintered diamond beads have high wear resistance and long service life. At the same time, due to their self-sharpening properties, they can always maintain sharp cutting performance. Beads produced by sintering are the mainstream of wire saws and can be used in almost all occasions.
Characteristics of electroplated diamond beads
Compared with hot-pressed sintered beads, the production process of electroplated diamond beads is relatively simple. In the diamond beads formed by electroplating, Co and Ni are used as electroplating materials, and the diamond is plated on the metal substrate to become the working layer. The diamond is completely embedded in the matrix by mechanical means, and the thickness of the coating is usually 70% to 80% of the height of the diamond itself, which is more conducive to the small diameter of the beads. Due to the thin diamond coating and poor wear resistance of the matrix, its coating metal has limited holding force on the diamond abrasive grains, and the diamond abrasive grains are easy to fall off in advance, so the overall performance is not as good as that of sintered beads, which is not suitable for cutting granite. For cutting softer materials such as marble.
Brazed diamond beads
Brazed beading is a new type of beading that is being researched and promoted in recent years. It uses high-temperature brazing technology to achieve chemical metallurgical bonding between gold mesh, solder and matrix. Therefore, the brazing alloy has a good ability to hold the diamond, and at the same time, the diamond has a high abrasive grain height, which can reach 2/3 of the abrasive grain diameter, which greatly improves its sharpness and diamond use efficiency. At present, brazing beads have not yet achieved large-scale engineering applications.