Foldable Solar Panel,Waterproof Solar Charger,Power Bank Solar Charger,Fidget Spinner Co., Ltd. , http://www.chsolarcharger.com
The current situation and problems of applying diamond bead wire saw in China's stone industry
With the continuous deepening of the central government's strategy of resource-saving, sustainable development and circular economy, the elimination of waste, the increase of production rate, the promotion of advanced mining methods and mining equipment in China's stone mining have become an urgent need in the stone industry in recent years. solved problem. At present, the highest voice is the comprehensive promotion and application of diamond wire saw mining mines in China. Since 2005, China's stone mining machinery industry has been a breakthrough for many years. The most outstanding performance is the localization of diamond wire saws. Almost at the same time, Shanghai Morgan, Gaoshi Stone Mining Machinery, Henan United Cyclone, Quanzhou Tool, Fuzhou Tianshiyuan and other companies launched their own diamond wire sawing machine, plus the earlier research and development of the Guangdong Geology and Minerals Bureau. Enterprises such as factories have made the market competition of diamond wire saws suddenly become fierce. The emergence of this phenomenon indicates that the era of the use of diamond wire saws in China's stone mines has arrived, which will bring revolutionary progress to the improvement of China's stone mining. The use of diamond wire saws for mining stone has been in foreign countries for more than 30 years. Early wire saws were only used to cut soft stone. The process of wire saw mining marble mines in the world is very mature. For hard stone such as granite, through the long-term unremitting efforts of wire saws, beaded rope manufacturers and mining companies, the use of wire saws to mine granite technology is becoming more and more mature. At present, wire saws can be widely used in granite, sandstone, etc. In the mining of hardness stone, the quality of products is getting higher and higher, and the cost is getting lower and lower, which has become a trend in the world. Advantages of using wire saws for stone mining Compared with traditional “blasting + flame cutting†mining methods, the use of wire saws for mining granite has the following advantages: 1. Wide adaptability, wire saws are suitable for all types of mines, and flame cutting is only applicable. In granite mines with high quartz content and few cracks. 2. Strong function and high efficiency, first deep mining depth, can reach l0 ~ 20m or even deeper, flame cutting is generally only within 10m; second cutting speed is fast, generally can reach 3 ~ 4m2 / h, is flame cutting 2 ~ 3 Times. 3. The wire saw can cut in all directions such as vertical, horizontal, and bevel, and can also perform blind cutting, while flame cutting can only perform vertical cutting. 4. The high rate of finished products and low comprehensive cost. Firstly, the cutting surface of the wire saw is very flat and does not cause any internal damage to the blocks. Secondly, the kerf is small, only about 11mm, which will not cause waste of resources; and the flame cutting surface is rough and uneven, and It causes certain internal injuries to the blocks, and the kerf is large, generally 100 to 300 mm, which causes great waste of resources and high mining cost. 5. Safe and environmentally friendly, wire saw mining has no noise and no dust, does not affect nearby residents and other working surfaces, and has high automation, separate control, low labor intensity and high safety; and flame cutting noise and dust are very large. It seriously affects the operations of nearby residents and other workers, and the workers are labor intensive and relatively low in safety. In summary, in today's increasingly scarce resources and soaring oil prices, the use of wire saws for the mining of granite has significant economic and social benefits. Factors that restrict the production and application of diamond wire saws Although the use of diamond wire saws for mining mines has advantages that traditional mining methods cannot match, the application of new diamond wire saws in actual production also has a series of technical difficulties, including high sawing efficiency. Long life, low price and high reliability. The diamond wire saw is a relatively fragile and fragile system. As a circular chain, the weakest link must be strengthened as much as possible. The reliability of the diamond wire saw is a great problem. Damage to the wire saw will result in failure of the entire tool or a significant reduction in its life, which has a large impact on the design of the tool and the production of the diamond wire saw. Today's diamond wire saw production has not been mastered by many diamond tool manufacturers. On the one hand this is due to the fact that the production of diamond wire saws is more complicated than the production of simple circular saw blades. On the other hand, the production of a suitable wire saw for sawing natural stone requires close cooperation and cooperation between the manufacturer and end users of the diamond wire saw. Various factors associated with diamond wire saws include: sawing life of beading, sawing speed of beading, spacing of beading on wire saws, mold design, life of steel rope under normal working conditions, and other technical difficulties. (A) The most common problems 1. The most common problems encountered with wire saws that cannot be sawed and used are incorrect selection of diamonds (often using too good diamonds), carcass, bead spacing, mold design or incorrect application parameters. For example, we use diamonds that are too high in density or too good, and their sawing performance is not very good. The diamond will not be easily broken, making it difficult to create new sharp edges. 2. The sawing rope breaks the saw rope, usually using the wrong application parameters or the quality of the saw rope is too poor, which means that the plastic/rubber and the diamond bead are not firmly combined, causing the cuttings to enter the diamond saw rope. Soon the magma or cuttings partially contacted and rubbed the steel rope between the beaded steel body and the steel rope, and the steel cord connection thread began to break, which may also be due to the wrong use of the bonding agent. Steel wire breakage may also be due to the incorrect selection of steel wire rope, beaded steel body, and poor heat treatment after injection molding. 3. Bead flaking If the bead cut layer is partially peeled off from the beaded steel body, it is usually improper to use the carcass or use the wrong sintering parameters. The use of an incorrect cold press process is also a cause of spalling. Sometimes, paraffin is infiltrated between the metal carcass and the beaded steel body due to improper dewaxing process. Sometimes the problem is also related to improper cleaning of the beaded steel. 4. The beading combination is not loose and the bead is loose, and the combination is not strong, which is usually a signal that causes problems during injection molding. It may also be improper use of wire rope, or contamination inside the diamond bead, improper cleaning, which will lead to poor bonding between beading and injection/molding rubber. In general, the production of diamond wire saws is flawed. It is more demanding than diamond saw blades. Like a circular chain, the production of diamond wire saws consists of many different production processes, if in a certain production process. In the event of a problem, the entire value of the diamond wire saw will be compromised. Many companies have no experience in this area, so it takes a while to have a strong foundation for a diamond wire saw with a good sawing function. (II) Continuous improvement and progress of domestic technology In recent years, the quality and technology of diamond bead ropes produced by domestic manufacturers are steadily improving, and have reached or are close to the advanced level of imported similar products. The main performances are as follows: First, the quality of the wire rope is improved. Because the imported high-quality steel wire rope is generally used, the problem of easy breakage of the wire rope is solved, and the durability of the bead rope is directly improved. Second, the bead spacing maintains the quality of the material. Nowadays, high-strength plastics and rubber are widely used, which makes the beading and steel wire ropes more firmly combined, solves the problems of pine beads and beaded beads, and greatly improves the quality of the beaded rope. The third is the improvement of the quality of diamond bead. Whether it is electroplated or sintered bead, its stability and wear resistance are greatly improved in cutting marble or cutting granite, which greatly improves the life of beaded rope. . For example, Fuzhou Tianshiyuan Superhard Tools Co., Ltd. has established product testing bases with many mining processing enterprises in Fujian, and developed marble mine ropes (spring fixed), granite mine ropes (rubber fixed), and combined rope sawing ropes (fixed by injection molding). It is used in many types of products such as granite board cutting, and can be customized according to the special needs of customers. An important member in the field of diamond bead saws, we hope that manufacturers will continue to improve the technology of diamond bead wire saws, overcome difficulties, and promote the application and promotion of stone mine mining industry in China, and improve domestic stone mines. Mining level and mining quality.