Blog #high efficient metal abrasive disc

It is quite dangerous to use the high efficient metal abrasive disc to break, I think it is necessary to talk to you, so that you can avoid this situation in the process of using it later, waste unnecessary time and avoid some safety hazards.

The main reasons for the fracture of the cutting piece are as follows:

1. The cutting piece itself has quality problems, such as poor flatness of the cutting piece, uneven structure of the cutting piece, high hardness of the cutting piece, and lack of toughness of the cutting piece resin.

2. The operation method is not correct. For example, the wire speed of the cutting piece is only 72m/s, and the operator installs the cutting piece on the cutting machine with the line speed of 80m/s.

3. Carelessness, the cutting piece is installed to be idling (that is, there is no workpiece to run) for one minute. In this process, the quality of the cutting piece and the hole diameter of the cutting piece and the cutting table shaft can be detected.

4. Before use, the cutting piece has undergone a more serious collision. Although it is relatively complete on the surface, its internal structure has been destroyed, and such a cutting piece is relatively easy to break during work.

Therefore, we must choose a good quality cutting piece when selecting the cutting piece. The inferior cutting piece is more likely to cause safety hazards, and the cutting piece is recommended to be purchased nearby.

To process different workpiece materials and meet different processing needs, it is necessary to choose different high efficient metal abrasive disc. There are many types of grinding discs, grinding discs with different bonding agents and different hardnesses. It is important to select the appropriate grinding disc according to the actual situation.

Diamond high efficient metal abrasive disc is excellent grinding tools for grinding high-hardness and brittle non-metallic materials such as cemented carbide and ceramics, optical glass, gemstones and stone. However, since diamond is easily carbonized at 700 ° C to 800 ° C, it is not suitable for grinding steel with a large amount of iron. The hardness of CBN is slightly lower than that of diamond, but its thermal stability is good (can withstand 1300 ° C ~ 1400 ° C high temperature), chemical inertity with iron elements, high thermal conductivity (46 times that of corundum), made with it The long life of the high efficient metal abrasive disc (up to several hundred times to more than one hundred times of the corundum grinding disc), unlike the diamond, which will decompose at high temperature (ie oxidation and graphitization), is an alternative to corundum grinding disc hardened steel, bearing steel, high speed tool A good abrasive tool for high hardness and toughness of steel, such as steel, stainless steel, heat-resistant steel and titanium alloy.

Bonding agents for diamond high efficient metal abrasive discs are resin, metal, ceramic, electroplating and brazing. According to the actual use, the selection of diamond grinding discs with different bonding agents is crucial for grinding efficiency and grinding quality.

1. The actual line speed of the high efficient metal abrasive disc shall not exceed the requirements of the following table.

2. Before the installation of the high efficient metal abrasive disc, check the speed mark of the high efficient metal abrasive disc, check whether there are cracks and damages, and check the strength.

3. After the installation of the grinding disc, it must be idling for not less than 5 minutes with the protective cover. Only when it is sure that the high efficient metal abrasive disc has reliable strength can it start working.

4. It is forbidden to use coolant that has a destructive effect on the grinding disc binder.

5. When handling the high efficient metal abrasive disc, it is necessary to prevent severe vibration and impact.

6, according to the size and shape of the grinding disc, should be placed on the shelf and in the box.

7. The high efficient metal abrasive disc should be stored to prevent moisture and freezing.

8. The storage period of the resin bond grinding disc shall not exceed one year. If it is overdue, it must be strictly checked to confirm that the quality is no problem before it can be used.