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GLOBAL UNITED TECHNOLOGY SERVICER CO., LTD

GTS Testing and certification laboratory professional automotive parts sensor testing quality certification

Automotive materials and parts

Provide various kinds of automotive materials and parts inspection certification

Automobile is an electromechanical hybrid system composed of tens of thousands of parts. Auto parts inspection can help auto manufacturers and parts manufacturers get detailed reports on the quality of parts, so as to improve the performance of parts.Testing covers environmental reliability testing of auto parts,Electrical performance test, functional test, EMC test,Material testing, green environmental testing and chemical compliance services.

Product range

Auto parts are mainly composed of eight parts: auto steering parts, auto walking parts, auto electrical instrument parts, auto lamps, auto modification parts, engine parts, transmission parts, and brake parts.

1. Automotive steering components: kingpin, steering machine, steering knuckle, ball pin, etc.
2. Car walking parts: rear axle, air suspension system, balance block, steel plate, etc.;
3. Automotive electrical instrumentation components: sensors, automotive lamps, spark plugs, batteries, etc.
4. Automobile lamps: decorative lights, fog lights, ceiling lights, headlights, searchlights, etc.
5. Auto modification parts: tire pump, car top box, car top rack, electric winch, etc.
6. Engine parts: engine, engine assembly, throttle body, cylinder block, tension wheel, etc.
7. Transmission system parts: clutch, transmission, variable speed shift lever assembly, reducer, magnetic materials, etc.
8. Brake parts: brake master pump, brake sub pump, brake assembly, brake pedal assembly, compressor, brake disc, brake drum, etc.

Auto parts testing projects are mainly composed of metal parts testing projects and polymer parts testing projects.
 Main test items of auto metal parts are:
1. Mechanical performance test: tensile test, bending test, hardness test, impact test, etc.;
2. Composition analysis: qualitative and quantitative composition analysis, trace element analysis, etc.;
3. Structure analysis: metallographic analysis, nondestructive testing, coating analysis, etc.;
4. Dimension measurement: coordinate measurement, projector measurement, precision caliper measurement, etc.

 The main testing items of automotive polymer components include:

1. Physical performance test: tensile test (including normal temperature and high and low temperature), bending test (including normal temperature and high and low temperature), impact test (including normal temperature and high and low temperature), hardness, fog, tearing strength, etc.;
2. Thermal performance test: glass transition temperature, melting index, Veka temperature softening point, low temperature embrittlement temperature, melting point, thermal expansion coefficient, thermal conductivity coefficient, etc.;
3 rubber and plastic electrical performance test: surface resistance, dielectric constant, dielectric loss, dielectric strength, volume resistivity, voltage resistance, breakdown voltage, etc.;
4. Combustion performance test: vertical combustion test, horizontal combustion test, 45° Angle combustion test, FFVSS 302, ISO 3975 and other standards;
5. Qualitative analysis of material composition: Fourier infrared spectroscopy, etc.

Routine test items
1, safety project:
Input current test, label to wipe test, energy level test, SELV test, current limiting circuit testing (LCC), limited power test (LPS), grounding continuity test, temperature and humidity (tide) test, drop, impact and other mechanical stress tests, the ball pressure test and normal temperature test, contact voltage, electric current test, insulation test voltage, abnormal test, yuan A fault testing, etc.
2, the EMC test project:
Conduction, radiation, harmonic, voltage fluctuation and flicker, electrostatic, RS, EFT, surge, CS, power frequency magnetic field, such as voltage sag.

Environmental reliability Testing
High and low temperature resistance test, heat and humidity resistance, high and low temperature impact, high and low temperature alternating, mechanical vibration, mechanical impact, low pressure (vacuum) test, IP grade, dustproof water release test, gas corrosion (single/multiple), salt spray corrosion test (neutral, acid, compound), etc.
Class specific tests
Battery charging and discharging test, impact test, impact test, drop test, ROhs testing, REACH, halogen detection, temperature and humidity environment test, failure analysis, components selection, pressure test, light aging test, sand and dust test, get wet in the rain test, vibration test, high speed test, mechanical shock test, biological environment test, salt spray test and reliable integrated environment Sex test, simulated packaging and transportation test, gas corrosion test, slice test, etc.
Energy efficiency test
Energy saving testing, energy efficiency testing
Electrical performance testing
Operating voltage, operating current, speed range, power, conductivity, dielectric constant, dielectric loss, field strength (breakdown voltage), etc
 

Automotive sensor test standard:

1, temperature sensor
The most commonly used temperature sensors are thermistor sensors, which are made of heat-sensitive materials. When testing the cooling heat temperature sensor, put the sensor into a cup with hot water, and use a multimeter to test its resistance value. The resistance value should decrease gradually with the decrease of temperature, and the resistance value should increase gradually when the sensor is removed.

2, pressure sensor
Pressure sensors are used to detect intake pressure and liquid pressure. The sensor is generally made of pressure sensitive tablets. When detecting the intake pressure sensor, start the engine, and detect the voltage between feet 1 and 2 of the sensor with universal variation. After the engine temperature is normal, step on the accelerator pedal several times, and the voltage value should vary between 0.6-4.6V.
 

3, air flow sensor
Air flow sensors are used to measure the amount of air drawn into the engine, and hot wire air flow sensors are now used. Use a multimeter to measure the voltage between two pins. The voltage should be about 5V. When the voltage is normal, blow air into the sensor with a hair dryer. The signal voltage should change sensitively with the size of the air intake.
 

4, speed sensor
The speed sensor is used to detect the speed of the wheel, generally using electromagnetic sensor. During detection, unplug the sensor plug and use a multimeter to detect the resistance between the two feet should be 800-1200 ohms, where the resistance between the two feet and the ground should be infinite.
 

5, position and Angle sensor
Position and Angle sensor When detecting the throttle position sensor, turn on the ignition switch and use a multimeter to measure the voltage between pins B and C. The voltage should be about 4.7V when the throttle is fully open and 0.7V when the throttle is fully closed.

2. Certification services
CCC, CQC, CQM, CB, CE, GS, EMF, ErP, UL, ETL, FCC, CEC, DOE, SAA, RCM
We are committed to the testing and international certification of information technology, audio and video, home appliances, lamps, wireless communications, power tools and machinery, electronic instruments, medical instruments and other types of products. We have obtained the qualification recognition of UL, Intertek, CSA, MET, TUV-RH, TUV-SUD, SGS, NEMKO, FCC, IC and many other international certification bodies. We can provide customers with professional and authoritative one-stop testing and certification services.
The test report issued by Global Zhongyi has legal effect and can be used in scenarios such as the entry of supermarkets, product appeals, anti-malicious rights protection, and auctions (appeals and auctions must meet Party A's testing requirements).