Diamond Segment for Marble Edge Cutting

1. Marble edge cutting Segment used on Diameter 250-450mm blades, mostly cutting 2-5cm slabs or tiles.

2. marble edge trimming Segment designs in Narrow Radial (NR), Wide Radial (WR) and Split Radial(SR).

3. Selected quality diamond and copper bond used for fast cutting and good edge finish.

Diamond Segment For Marble Edge Cutting：

Applications:

This marble edge cutting diamond segments works as a function part of marble and limestone diamond saw blade to cut hard marble edges on manual cutting machine, table saw or bridge saw. It consists of synthetic diamond, Cobalt powder, copper powder, and various of metal powder in soft to hard bonds as per stone hardness. This marble edge cutting diamond segments is with aggressive diamond particles inside for fast cutting purpose.

In the process of high frequency welding, find the cause of "bubbling" through actual cases
In the high-frequency welding process, the power of the welding machine is 15 kVA, the melting temperature of the soldering piece used is between 600-7300C, the heating time is between 18-25s, and the flux is QJ102 flux. The segment is layer type copper bond without welding transition layer, the diameter of the saw blade base is 1.6m, and the material is 65Mn. The welding process is carried out without protective atmosphere. A preliminary analysis of the "bubbling" phenomenon may be caused by:
(1) The welding surface is not thoroughly cleaned, and some residual impurity elements emit a large amount of gas after heating, causing bubbling;
(2) The quality problem of the flux and the soldering piece, or one of them is qualified and a bad chemical reaction occurs;
(3) The segment is not dense enough, and the gas in the internal gap will escape after being heated and expanded during heating;
(4) Diamond problem in diamond segment
(5) The effect of comprehensive factors.
In view of the above analysis, we take various corresponding experimental measures to investigate, so as to find out the real cause of the bubbling problem.
After continuous testing, finally found the diamond is easy to graphitize at high temperature. The reason for the graphitization of diamond in the saw blade is that iron is a strong carbide-forming element, which can strongly dissolve diamond at high temperature to form Fe 3C, and Fe3C is also It is very anisotropic, and the transition temperature decreases, and it decomposes to become iron and graphite. According to the information, it is found that under the protection of H, N, CO and other atmospheres, the diamond has begun to graphitize slightly above 7000C, but under the condition of no protective atmosphere, the starting temperature of graphitization decreases. Diamond is highly thermally sensitive and will burn into carbon dioxide (Cq) and carbon monoxide (CO) at high temperatures. In the air, the qualitative change of diamond will occur between about 450-8600C, and even graphitization ablation will occur, which can reduce the performance. The welding temperature of diamond saw blades using silver-based solder is generally between 650-7500C, and there is no protective atmosphere during welding, which is in line with the conditions for diamond graphitization, plus the catalytic effect of certain elements in the melted solder , So that the graphitization effect is more intense.

Specifications:

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