So how do you choose a diamond saw blade that is suitable for you and of good quality? When choosing a diamond saw blade, we will follow five aspects to choose, namely diamond particle size, diamond distribution concentration, diamond strength, bonding phase and sintering process :
1. Diamond particle size
When the diamond particle size is coarse and single particle size, the saw blade head is sharp and the sawing efficiency is reduced, but the bending strength of diamond agglomeration decreases; when the diamond particle size is fine or coarse and fine particle size is mixed, the saw blade head is durable, but the efficiency is lower. Low. Considering the above factors, it is more appropriate to choose the diamond particle size as 50/60 mesh.
2. Diamond distribution concentration
Within a certain range, when the diamond concentration changes from low to low, the sharpness and sawing efficiency of the saw blade gradually decline, while the service life gradually extends; but if the concentration is too high, the saw blade will become dull. , the efficiency will be improved. Taking advantage of the different roles of the various parts of the segment during sawing, different concentrations are used (that is, the middle layer can use a lower concentration in a three-layer or multi-layer structure), and the segment works in the sawing process. The formation of the middle groove is beneficial to prevent the saw blade from swinging, thereby improving the quality of stone processing.
3. Diamond strength
The strength of diamond is an important indicator to ensure cutting performance. Excessive strength will make the crystal not easy to break, the abrasive grains will be polished during use, and the sharpness will decrease, resulting in the deterioration of tool performance; when the diamond strength is not enough, it will be easily broken after being impacted, and it is difficult to Responsible for cutting. Therefore, the strength should be selected at 130~140N.
4. Adhesive phase
The performance of the cutting blade does not depend only on the diamond, but on the overall performance of the composite material of the segment composed of the diamond and the binder. For soft stones such as marble, the mechanical properties of the segment are required to be relatively low. Some copper-based binders can be used. However, copper-based binders have low sintering temperature, low strength and hardness, high toughness, and low bonding strength with diamond. When tungsten carbide (WC) is added, WC or W2C is used as the skeleton. Metal, with an appropriate amount of cobalt to improve strength, hardness and bonding characteristics, and add a small amount of metals such as Cu, Sn, Zn, etc. with low melting point and low hardness as binder phase. Should be finer than 300 mesh.
5. Sintering process
With the increase of temperature, the degree of densification of the matrix increases, and the flexural strength also increases, and with the extension of the holding time, the flexural strength of the blank matrix and diamond agglomerates increases first and then decreases. 120 s sintering process at ℃ to meet the performance requirements.
In addition to the above five points, we can also choose diamond saw blades according to their appearance:
Look at the number of diamond saw blade particles. In order to reduce the cost, the inferior saw blade uses the method of reducing the diamond content to reduce the cost. After the consumer uses it, it not only does not cut, but also consumes quickly.
Looking at the color of the segment, the normal diamond segment should be silver-white, with the natural color of iron, and the inferior diamond saw blade is dark due to the large amount of impurities.
For the cutting feel, first of all, in the case of selecting the right cutting blade, the cutting should be smooth (except when the wrong saw blade is selected, the feeding speed is too fast, and the saw blade is burned).
Inferior saw blades use corundum, the difference between corundum and diamond is the degree of wear resistance of abrasive grains, and diamond saw blades produced with corundum are not durable.
Common diamond saw blade specifications currently on the market include 4 inches, 5 inches, 7 inches, 9 inches, 10 inches, 12 inches, 14 inches, etc.
Our technical department has been working hardly for years to develop circular saws which enables WANLONG to offer the blades with satisfactory performance. WANLONG Diamond saw blades are widely used to process all types of materials, including, Granite, Marble, Limestone, Basalt, Travertine, Sandstone, Slate, Andesite, etc.
1. The blade has good sharpness, high efficiency and long lifespan.
2. Good cutting result: smooth cutting, flat surface and even size
3. Stable cutting, narrow cutting gap, stone waste reduction
4. Easy for diamond opening.
