Diamond Wheel New Development

Diamond grinding wheel is grinding carbide, glass, ceramics, gem high brittle material effects tools. In recent years, with the rapid development of high-speed grinding technology of ultra-precision grinding, put a higher demand on the grinding wheel, ceramic resin bonded grinding wheel has been unable to meet production needs, metal bonded grinding wheel because of its combination of high strength and good formability, notable features like long life production has been widely used. Metal-bonded diamond grinding wheel manufacturer in different ways according to the main sintering, plating two types. In order to give full play to the role of super abrasive abroad from the early 1990s began to use high-temperature brazing process to develop a new wheel, namely single-temperature brazing grinding wheel, this wheel is still in the current domestic research and development stage.

Ceramic diamond grinding wheel Ceramic bond diamond wheel having a common characteristic diamond and vitrified bond, compared with ordinary corundum, silicon carbide grinding wheel, its grinding power, relatively low temperature grinding wheel wear is relatively small; it can adapt to each Species coolant effect; high precision grinding wheel shape retention is good, grind the workpiece; there are more pores within the wheel, is conducive to chip and heat when grinding, clogging, easy to burn the workpiece; wheel self-sharpening better, longer dressing intervals, trimming easier. So vitrified diamond grinding wheel in the growing use of some foreign countries.

Sintered diamond wheel

Sintered metal bonded grinding wheel mostly bronze and other metals as a binding agent, with a high temperature sintering method, high bonding strength, formability, high temperature, thermal conductivity, wear resistance and long service life, can withstand greater loads. Wheel sintering process because inevitably kept the contraction and distortion, it must be shaped grinding wheel before use, but more difficult to Dresser. Production is now commonly used to roll wheel dressing shaping method is not only time consuming and laborious, and finishing off the diamond particles process more wheel dressing itself consume a lot lower shaping accuracy.

In recent years, scholars have launched a special processing method applied metal bond diamond wheel trim work, mainly electrolytic dressing method, EDM trimming method composite dressing method. Electrolytic dressing method faster, but shaping accuracy is not high; high precision EDM shaping trimming method, either plastic but also dressing, but plastic is slower; composite trimming method electrolytic composite EDM dressing, mechanical chemical compound trimming method etc., dressing better, but the system is more complex, and therefore a sintered diamond wheel dressing the problem still has not been solved.

Furthermore, since the grinding wheel manufacturing process to determine its surface morphology random, each grain geometry, distribution and height of the cutting edge which is inconsistent, and therefore only a few higher grinding the cutting edge to cut the workpiece, limiting the grinding quality grinding efficiency is further improved.

Diamond Wheel

Electroplated diamond grinding wheel advantages:

① electroplating process is simple, low investment, ease of manufacture;

② without dressing, easy to use;

③ monolayer structure determines it can reach a very high work rate, now abroad has reached 250 ~ 300m / s;

④ Although only a single layer of diamond, but there is still enough life;

⑤ roller for high precision grinding wheel, plating unique manufacturing method. Precisely because of these advantages, electroplating wheel speed, ultra-high speed grinding occupy the undisputed dominant position. Electroplated diamond grinding wheel defects exist: coating metal and substrate binding and abrasive surface does not exist solid chemical metallurgical bonding, actually only be mechanically entrapped abrasive coating metal inlay, thus small gripping force, high efficiency grinding diamond particles heavier load shedding (or plating flaking) and lead to an overall failure; in order to increase the gripping force is necessary to increase the thickness of the coating, the result highly abrasive bare chip space is reduced, the wheel prone to clogging, the cooling effect is poor, the surface prone to burn. At present, the plating Wheel Manufacturing has not been implemented according to the requirements of the processing conditions and optimize the design of optimal topography wheel, single electroplated diamond grinding wheel is bound to these inherent disadvantages greatly limit its efficient grinding applications.