The automotive industry, including the processing and manufacturing of complete machines and parts, must use the roughness tester.
For example, the evaluation and detection of the honed surface of the cylinder liner/body surface processing technology platform of the heart part of the automobile engine and the detection have always been one of the technical difficulties faced by the cylinder liner processing industry.
To evaluate the platform honing pattern on the inner surface of the cylinder liner, not only the average roughness Ra of the surface profile, the height of the surface roughness profile Rz, but also a set of comprehensive parameters based on the profile support length rate curve Rpk, Rk, Rvk, Mr1, Mr2 and so on.
Of course, the performance and precision of the roughness measuring instrument used in these necessary evaluation and testing processes are also required to be very high.
In production and processing, parts such as cylinders, pistons, crankshafts, bald axles, air brake valves, valves, connecting rods, gears, bearings, etc. are almost always tested by roughness instruments.
Since the production and overall assembly of automobile starting system, transmission system, braking system and other spare parts need to be tested by roughness instruments, then we can think of tractors, trains, ships, airplanes, rockets and other land, sea and air transportation. Similar instruments are also used in the manufacturing process of tools.
In fact, roughness instruments are used in the production and testing process of diesel engines for tractors, gasoline engines for motorcycles, internal combustion engines on trains, interiors of train locomotives, train shafts, aircraft engines, etc.
Moreover, the higher the level of technological content of these machines and the higher the requirements for the manufacturing process, the higher the requirements for surface quality and the better the performance accuracy of the required instruments.