How to set the cutting speed of one material?
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Our customers often ask, if I cut a glass diameter of 300mm, how long does it take? Or how long does it take if we cut a diameter of 400 graphite? This is the main question, most of our customers are concerned about. Here let’s discuss the cutting speed of a diamond wire saw.
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Many factors influence the cutting speed, such as the hardness and brittleness of the material, the diameter of the wire loop, the tension of the wire loop, the amount of the diamond wear, the size of the workpiece, working technology, feeding speed of the wire, and coolant, etc.
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1. The hardness and brittleness of the workpiece. Different cutting speeds are required for different hardness and brittleness of the material. The harder the material, the faster the diamond wire will wear, and the quicker the cutting force of the diamond wire will weaken. Therefore, the harder the material, the slower the cutting speed; the softer the material, the faster the cutting speed.
??For example, we have compared glass and jade. Glass and jade, are between 6 and 7 on the Mosh hardness scale. The cutting speed of jade is only half, or one-third of the cutting speed of the glass. It is not difficult to find that under the condition of the same hardness, the cutting speed of more brittle materials will be faster.
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2. The diameter of the diamond wire. Diamond wires come in different diameters. The larger the diameter, the larger the contact area with the workpiece and the faster the cutting speed.
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3. Tension of diamond wire. As we all know, a straight line is the shortest distance, and the diamond wire has a good cutting effect when it is kept in a straight line. The reason is that a certain tension on the diamond wire can keep the diamond wire always in or close to a straight line so that the trajectory of each movement of the diamond wire can overlap with the previous movement trajectory so that the cutting effect is closest to a straight line. On the contrary, the diamond wire is easily bent due to stretching, and when it is bent, the diamond wire will open another cutting seam, making the cutting result bumpy.
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4. The degree of wear of the diamond wire. A new diamond wire is sharper, has greater cutting force, and can cut faster. A worn diamond wire has less cutting force, so the cutting speed is naturally slower.
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5. The size of the workpiece being cut. Small workpieces will be cut faster because the chip removal is faster when the workpiece is small. Large workpieces will not be able to remove chips smoothly, and the chips will be blocked in the cutting seam, resulting in some repeated cutting. In addition, because the workpiece is large, the contact area with the diamond wire increases, the resistance generated is greater, and the cutting speed is slower.
6. Processing technology. The purpose of changing the processing technology is to reduce the contact area between the diamond wire and the workpiece so that small-sized workpieces can be cut faster.
7. The faster the diamond wire runs, the faster the cutting speed.
8. The role of cutting fluid cannot be ignored. The main function of cutting fluid is to cool and remove chips in time, making cutting smoother. On the contrary, if the cutting fluid is not properly selected and cannot remove chips in time, the diamond wire will be cut repeatedly, affecting the cutting speed.
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??The above are the main factors that affect the cutting speed that we often encounter. We can choose the appropriate cutting speed according to different situations.