Introduction to GH4169 Nickel-based Superalloy Abrasive Belt Grinding

GH4169 nickel-based superalloy has great comprehensive performance under 253 ~ 700 ℃, and in the temperature range, its yield strength has significant performance relative to other alloys. It is widely used in manufacturing various parts and components of aerospace, nuclear energy and petrochemical industry, such as compressor disc of aircraft engine, turbine disc, heavy ring, fasteners, etc.

The oxide on the surface of GH4169 workpieces is more difficult to remove than that of stainless steel, which needs fine abrasive belt for grinding. In order to ensure the surface roughness and surface quality after abrasive belt grinding, it needs to select reasonable process parameters via experiment, such as abrasive belt speed, grinding pressure, vibration frequency and so on.

When grinding superalloy, grinding wheel grinding grains will produce serious abrasion wear and adhesion blocking phenomenon, and the grinding ratio is also low; The required grinding force is much larger than that of grinding ordinary steel material, so it is easy to produce strong plastic deformation; The grinding heat is concentrated on a very thin grinding surface, so the grinding temperature is very high;

Because of the influence of the grinding force and grinding temperature, wheel grinding easily causes the burns of workpieces, and is not easy to ensure the quality of the workpiece surface. Therefore, developing superalloy grinding tools with excellent performance has become the current urgent requirements, in order to improve the grinding efficiency and grinding quality.

The rapid development of abrasive belt grinding technology, provides a strong guarantee for the above problems. Abrasive belt grinding as a new technology, has the characteristics of high quality, high efficiency and low energy consumption, and is also capable of grinding, lapping and polishing, etc. The machined workpieces have smaller surface roughness and better surface integrity. Although the lubrication condition is dry grinding, it is not easy to make the surface burned, which has its reputation as the "cold treatment".