Ways to inspect the quality of machines Visual inspections Visual inspections to examine product or material for such specificatioxts as color, texture, surface finish, or overall appearance of an assembly to determine if there are any obvious deletions of major parts or hardware. Metallurgical testing Metallurgical testing is often an important part of source inspection, especially if the primary raw material manufacturing materials such as bar stock or structural metal stock is far. Metals testing can involve all the major types of inspections including visual, spectrographic, chemical, and mechanical, which include hardness, tensile, shear, Compression. and spectrographic analysis for alloy content. Metallurgical testing can be either destructive or nondestructive. Dimensional inspection Few areas of quality contrfll are as important in rnanufacturecl products as dimensional requirements. Dimensians are as important in source inspection as they are in the manufacturing process.
This is especially critical if the source supplies parts for an assembly, Dimensions are inspected at the factory using standard measuring foals plus special fit, form source, and function gages that may required. Dimensional meeting specifications is critical to interchangeability of manufactured parts and to the successful assembly of many parts into complex assemblies such as autos, ships, aircraft, and ether multipart products. Destructive and nondestructive inspection In some cases it may have necessary far the source inspections to call for destructive or nondestructive tests an raw materials or parts and assemblies. This is particularly true when large amounts of stack raw materials are involved. For example it is neccessary to inspect castings for flaws by radiographic, magnetic particle, or dye penetrant techniques before they are shipped to the manufacturer for final machining. Specifications calling for burn-in tune far electronics or endurance run tests for mechanical components are further examples of nondestructive tests.
It is sometimes necessary to test material and to destruction, because of the casts and lxtt party time destructive testing is avoided possible wl3enever involved. Examples include pressure tests to determine if safety factors arc adequate in the design. Destructive tests are probably more frequent in the testing of prototype designs than in routine inspection of raw material or parts. Eleven design specifications are known to 6e met in regard to the strength of materials, it is often not necessary to test further parts to destruction unless they are genuinely Perfermarce inspection Performance inspections involve checking the function of assemblies, especially those of complex mechanical systems, prior to installation in other products. Examples include electronic equipnyent subcampanents, aircraft and auto engines, pumps, valves, and other mechanical systems requiring performance evaluation prior to their shipment and final installation. We provide Professional technology, excellent product quality and intimate after-sales service when you purchase rock crusher, ball mills, from our company.
