What kind of influence will be caused to the parts when CNC machining is very rough

This article will introduce the influence of rough machining on CNC parts

1. Influence on wear resistance: the rougher the CNC product processing surface, the smaller the useful contact area between mating surfaces, the greater the pressure, the greater the conflict resistance, and the faster the wear.

2. Affect the stability of fit: for clearance fit, the coarser the surface is, the easier it is to wear and make the middle gap gradually increase in the working process; for interference fit, because the meso convex peak is squeezed flat when it is equipped, the essential useful interference is reduced and the connection strength is reduced.

3. Influence on fatigue strength: there are large grooves on the surface of rough parts, which are the same as sharp corner notches and cracks, and are sensitive to stress sets, thus affecting the fatigue strength of parts.

4. Impact on corrosion resistance: rough part surface is easy to make corrosive gas or liquid penetrate into the inner layer of metal through the surface micro concave Valley, forming surface erosion.

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5. Influence on sealing: rough surfaces can not be well fitted, and gas or liquid leaks through cracks between contact surfaces.

6. Influence on contact stiffness: contact stiffness is the strength of the part fusion surface to resist contact deformation under the action of external force. The stiffness of the machine depends on the contact stiffness between the parts to a great extent.

7. Affect the measurement accuracy: the surface roughness of the measured surface of the part and the measuring surface of the measuring equipment will directly affect the measurement accuracy, especially in the careful measurement.

Other factors, such as coating, thermal conductivity and contact resistance, reflection strength and radiation function, flow resistance of liquid body and smooth current on conductor surface, will be affected by surface roughness at different levels. Therefore, Suzhou CNC processing plant should pay close attention to this aspect, and do not make the same mistakes in the production process.