How to do the material test? What are the contents of metal material testing?

Date：2022-08-25 15:57:12Views：742

The nominal properties of general materials are measured under certain conditions, but some materials, especially the treated materials, may not reach such properties. Therefore, the properties of materials are very volatile and greatly affected by the treatment conditions, which is the reliability of materials. In order to help you understand in depth, this paper will summarize the relevant knowledge of metal material testing. If you are interested in what this article is about to cover, read on.

What is material testing?

Material testing is the pillar of this relationship between product reliability and the materials involved in manufacturing products. This is why manufacturers rely on material test results to explain everything from the composition of alloys designed for medical / therapeutic implants to the flammability of new materials in the construction industry.

Material testing can manufacture and manufacture a variety of products from thermoplastics to adhesives, composites to glass, thermosetting plastics to titanium.

What are the contents of metal material testing?

Mechanical properties: mainly including (tensile test, high and low temperature tensile test, compression test, shear test, torsion test, bending test, impact test, Rockwell hardness test, Brinell hardness test, Vickers hardness test and flattening test;

Chemical composition analysis: mainly analyze the content of various chemical components in metal materials (carbon, silicon, manganese, phosphorus, sulfur, nickel, chromium, molybdenum, copper, vanadium, titanium, tungsten, lead, niobium, mercury, tin, cadmium, antimony, aluminum, magnesium, iron, zinc, nitrogen, hydrogen and oxygen);

Metallographic test: mainly including (non-metallic inclusions, macrostructure, grain size, fracture inspection, coating thickness, depth of hardened layer, decarburization layer, metallography of gray cast iron, metallography of nodular cast iron and metallographic section analysis;

Coating test: commonly used methods are coating thickness measurement Coulomb method, coating thickness measurement metallographic method, coating thickness measurement eddy current method, coating thickness measurement ray fluorescence method, coating composition analysis and surface stain analysis;

Corrosion test: including neutral salt spray test, acid salt spray test, copper ion accelerated salt spray test, sulfur dioxide corrosion test, hydrogen sulfide corrosion test, mixed gas corrosion test, 10% oxalic acid corrosion test of stainless steel, sulfuric acid ferric sulfate corrosion test of stainless steel, 65% nitric acid corrosion test of stainless steel, nitric acid hydrofluoric acid corrosion test of stainless steel, sulfuric acid copper sulfate corrosion test of stainless steel, and 5% sulfuric acid corrosion test of stainless steel;

NDT: including ultrasonic testing, radiographic testing, magnetic particle testing and penetrant testing;

Dimensional test: including dimensional measurement, symmetry, perpendicularity, flatness, circular runout, coaxiality, parallelism, roundness and roughness;

Welding procedure qualification: including tensile test, bending test (face bending, back bending and side bending), ultrasonic testing, radiographic testing, magnetic particle testing, penetrant testing, surface visual inspection, macro structure testing, weld hardness test and impact test.

Failure analysis includes: procedures and steps of failure analysis, investigation of failure events, determination of events or first failure parts, careful collection of debris of failure parts and proper storage, collection of background data of failure parts, determination of failure analysis scheme and formulation of implementation details, inspection, testing and analysis.

The above is the relevant content of metal material testing compiled by the core testing team. I hope it will be helpful to you. Our company has professional engineers and industry elite teams, and has three standardized laboratories with an area of more than 1800 square meters. It can undertake various test projects such as electronic component testing and verification, IC authenticity identification, product design and material selection, failure analysis, functional testing, factory incoming material inspection and tape weaving.