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  • Metal covering Layer thickness

    Purposes:The thickness of the metal covering layer and its uniformity are an important quality marks of coating, it largely influences the reliability and service life of products. Detecting the thickness of the metal covering layer on the material surface and its uniformity helps to monitor the product quality, improve technology, and improve business efficiency. Applications:Mainly used in protecting the small and precision instrument parts and anti-abrasion shaft repair, as well as beautifying, decorating the material appearance or conductive, anticorrosion performance etc. Tested Flow:Sampling→Cleaning→Inlaying→Grinding→Polishing→Etching(if necessary)→Vacuum coating(if necessary)→Observeing Reference Standard:GB/T 6462-2005 Metallic and oxide coatings—Measurement of coating thickness—Microscopical methodGB/T16921-2005 Metalliccoatings—Measurementofcoatingthickness—X-rayspectrometric methodsJB/T 7503-1994 Thickness of cross section of metal coatings scanning electron microscope measuring methodASTM B487-1985(2007) Standard test method for measurement of metal and oxide coating thickness by microscopical examination of a cross sectionASTM B748-1990(2010) Standard test method for measurement of thickness of metallic coatings by measurement of cross section with a scanning slectron microscope
    05-31 2018
  • Particulate cleanliness

    Particulate cleanlinessDefinition:Cleanliness refers to the extent to which parts, assemblies and specific parts of the whole machine are contaminated with impurities. The quality, size and quantity of impurity particles collected from the specified characteristic locations by the specified method are expressed. "Specified part" refers to the characteristic part that endangers the reliability of the product. "Impurities" include all impurities that remain in the design, manufacture, transportation, use and maintenance of the product, mixed with the outside world and generated by the system.Testing purpose:The purpose of ensuring cleanliness is to ensure the specified life of the product, so as not to shorten the life of the product due to pollution in the process of manufacture, use and maintenance. Cleanliness tests and its limit, can greatly reduce the damage caused by the wear particles, and improve the machine running on the life and reliability, reduce the harm to the whole machine, such as: filter blockage, loop flow decreases, and sealing materials, abnormal wear on the diaphragm, accumulate work caused a large scale is not reliable, electromagnetic switch valve is not reliable or burning, etc., are of special significance.Industry involved:Mainly for automotive parts, aircraft engines, electronic products, such as assembly parts.Testing standards:ISO 16232, VDA 19, PV 3370, etc.Test items:Component particle cleanliness testCleanliness pollutant particle size analysisAnalysis of pollutant compositionTest method:Using pressure washing, such as ultrasonic cleaning method will impurity extraction to specific liquid first, then the liquid filtering impurities will collect on the membrane filter, impurities will dry weigh, and under the microscope measurement size or using SEM and EDS analysis.
    05-31 2018
  • Section analysis of metal/nonmetallic materials

    Objective:Observation samples internal structure and defect analysis, electroplating technology analysis and slice analysis of the sample can be used to observe morphology and composition, through the slice method to observe the internal structure, validation samples suspected abnormalities found crack, hollow, and so on and so forth.Application:Ceramics, plastics, electroplating products, composite materials, welding parts, metal/non-metal products, automobile parts and accessories, etc.Test procedures:Sampling, cleaning, vacuum setting, grinding, polishing, micro-etching (if necessary), metallographic microscope/scanning electron microscope observation/composition analysis.Section analysis of metal nonmetallic materialsAccording to standards:Ipc-tm 650 2.1.1 et al.
    05-31 2018
  • Mechanical tensile test

    Introduction:Tensile test is a test method for determining the properties of materials under axial tensile loading. Tensile test can be determined a series of indicators of the strength and plasticity index elastic limit, elongation, modulus of elasticity, proportional limit, the amount of reduction of area, tensile strength, yield point, tensile yield strength and other performance indicators. Testing standards:GB / T 228.1, ASTM E8 / E8M, ISO 6892-1, GB / T 1040, ISO 527, ASTM D638 etc.
    05-31 2018
  • Impact Toughness test

    Introduction:Impact toughness test test material to resist impact load capacity. The practical significance of impact toughness index lies in revealing the brittle tendency of the material. Impact toughness test pided Charpy impact test and Izod impact test. Testing standards:ASTM E23, GB / T229, GB / T 1043, GB / T 1843 etc.
    05-31 2018
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