Characteristics and Application of Super - hard Grinding Wheel in Precision Grinding

Author：newanhua　　Release date：2017/5/12 10:02:43

Precision grinding according to the different abrasive grinding wheel can be divided into ordinary abrasive grinding wheel precision grinding and ultra-hard abrasive grinding wheel precision grinding. For the super-hard abrasive grinding wheel precision grinding, specifically to discuss. Superhard abrasive grinding wheel is currently the main diamond wheel and cubic boron nitride grinding wheel, and used to precision machining of materials for precision grinding.
Characteristics of grinding of super - hard abrasive grinding wheel
1, super-hard abrasive grinding wheel with good wear resistance, grinding ability, high durability characteristics, this feature for the control of processing and processing automation to achieve a great help.
2, at the same time, super-hard abrasive grinding wheel also has a low grinding temperature, grinding force is small, no burns, no crack characteristics, processing surface quality, tissue no change. Grinding carbide with diamond grinding wheel, the grinding force is only green silicon carbide grinding wheel grinding 1/4 to 1/5.
3, high grinding efficiency, but also one of the main features of super-hard abrasive grinding wheel, which is due to the super-hard abrasive has a sharp edge, high wear resistance, and therefore have a higher removal rate and grinding ratio. But the super-hard abrasive grinding wheel is difficult to dress the problem.
4, super hard abrasive grinding wheel is one of the most important feature is the lower cost of processing, although the diamond grinding wheel and cubic boron nitride wheel is more expensive, but its long life, high processing efficiency, low working hours, low overall cost.
Application range of super - hard abrasive grinding wheel
Superhard abrasive wheels can be used in non-metallic materials, processing a variety of high hardness and high brittle metal materials, such as: precious stones, glass, ceramics, semiconductor materials, food, carbide, heat-resistant alloy steel, Its alloys and so on.
In addition to the above common features and the scope of application, the diamond grinding wheel grinding and cubic boron nitride grinding wheel has its own characteristics and applications. Diamond grinding wheel has a strong grinding ability and high grinding efficiency, in the processing of non-metallic hard and brittle materials, carbide, nonferrous metals and alloys have advantages, due to the emergence of artificial diamond and the process is mature, the price Also relatively cheap, so the application is more extensive.
However, because the diamond easy to produce chemical reaction and affinity with the iron element, so for hard and tough, high temperature hardness, low thermal conductivity of steel materials, such as: heat-resistant alloy steel, titanium alloy, die steel, etc. Cubic boron nitride grinding wheel grinding better. Cubic boron nitride is better than the thermal stability of diamond, strong chemical inert, such as: diamond thermal stability of only 700 to 800 degrees Celsius, while the cubic boron nitride up to 1250 to 1350 degrees Celsius, not easy with iron Produce chemical reactions and affinity, processing steel metal, a higher wear resistance. Although the current application of cubic boron nitride abrasive is not as good as diamond abrasive, and the price is also more expensive, but it is a very promising abrasive abrasive.
In order to expand the scope of diamond grinding wheel applications, diamond grinding wheel is being carried out research, such as grinding in a protective atmosphere, grinding at low temperatures, etc., have not yet been used in industrial production.