Material testing machine is a precision testing instrument for measuring the mechanical properties, process properties and internal defects of metal materials, non-metallic materials, mechanical parts and engineering structures under various conditions and environments, and verifying the dynamic imbalance of rotating parts. In the process of researching and exploring new materials, new processes, new technologies and new structures, material testing machine is an indispensable and important testing instrument. It is mainly used to test and analyze the static properties of metal and non-metal (including composite materials) such as tension, compression, bending, shear, peeling, tearing, load retaining, relaxation, reciprocating and so on.

According to the loading method, the material testing machine can be divided into static load testing machine (static) and dynamic load testing machine (dynamic).

1. Universal testing machine

Including hydraulic universal testing machine and electronic universal testing machine, double screw rod series, the integrated structure of control, measurement and operation integrates contemporary advanced technology, and has the advantages of high precision, wide speed regulation range, compact structure, convenient operation and stable performance.

Applicable materials: rubber, plastic, film, adhesive, steel bar, glass, touch screen, textile, waterproof material, wire and cable, mesh rope, metal wire, metal rod, metal plate and other photovoltaic materials and garment industry

Test items: tensile stress, tensile strength, constant tensile stress, constant stress elongation, breaking strength, elongation after fracture, yield strength, yield point elongation, yield point tensile stress, tear strength, peel strength, puncture strength, bending strength, elastic modulus, etc

Standards involved:

GB/T1040. 1-2006 determination of tensile properties of plastics

GB / T 1041-2008 plastics - Determination of compressibility

GB / T 8804.1-2003 thermoplastic pipes determination of tensile properties Part 1 test methods general

GB / T 9341-2008 plastics - Determination of flexural properties

GB / T 9647-2015 thermoplastic pipes - Determination of ring stiffness

ISO 7500-1-2015 verification of static uniaxial testing machine for metallic materials

GB / 16491-2008 universal electronic testing machine

GB / T 17200-2008 technical specification for rubber and plastics tensile, pressure and bending testing machine (constant speed drive)

ISO 5893:2002 rubber and plastics test equipment Tensile, bending and compression type

ASTM d638-2003 test method for tensile properties of plastics

ASTM D 695-2010 test method for compressive properties of rigid plastics

ASTM d790-2003 Standard Test Method for bending of Unreinforced and reinforced plastics and electrical insulating materials and requirements of plastic pipes and other standards

2. Pressure testing machine

Pressure testing machine is also called electronic pressure testing machine.

Applicable materials: rubber, plastic plate, pipe, profile, plastic film, wire and cable, waterproof coiled material, metal wire, carton and other materials

Test items: compression test, tensile test

Performance: tensile test (stress-strain test) is generally to clamp the two ends of the material sample on two clamps with a certain distance. The two clamps separate and stretch the sample at a certain speed, and measure the stress change on the sample until the sample is damaged

Partial structure:

Temperature sensing rod: screw in thermocouple, with sensitive, uniform and high precision.

Heater: screw in heater, high power, fast temperature rise and strong durability.

Column copper sleeve: refined from brass, wear-resistant and no resistance.

Power system: special motor is adopted to make the operation stable and accurate without dry sound.

Safety protection: with emergency protection device, the machine can be stopped or reversed in case of emergency.

3. The tensile testing machine is the same as the universal testing machine.

Applicable materials: plastic plate, pipe, profile, plastic film, rubber, wire and cable, steel, glass fiber and other materials

Standards involved: GB / t16491, GB / t1040, GB / t8804 1、GB/T8804. 2. GB / t1041, GB / t9341, GB / t8808, GB / t18477, GB / t583, gb13022 and other standards.

Test items: static load, tension, compression, bending, shear, peeling and other mechanical properties.

4. Torsion testing machine

Torsion testing machine is divided into spring torsion testing machine, wire torsion testing machine and material torsion testing machine.

Applicable materials: metal, non-metal and parts, etc.

The metal wire torsion testing machine is suitable for measuring the ability of metal wire with diameter (or characteristic size) of 0.1-10.0mm to withstand plastic deformation in unidirectional or bidirectional torsion and displaying the defects on the surface and inside of the wire.

Test items: torsional performance test, maximum torque, torsional strength, upper yield strength and lower yield strength

Related standards: GB / T 239-1999 metallic wire rod torsion test method, international standard ISO 7800:1984 metallic wire rod unidirectional torsion test method and ISO 9649:1990 metallic wire rod bidirectional torsion test method.

5. Creep testing machine

Creep endurance testing machine is divided into mechanical type and electronic type according to structure and principle; Mechanical type is a traditional product, while electronic type is a new product developed in recent years.

Applicable materials: metal, non-metallic materials, etc

Test items: tensile, compression endurance, creep, relaxation test, low cycle fatigue and creep fatigue test

Standards involved:

GB / t2039-1997 metal tensile creep machine endurance test method

Hb5151-1996 test method for tensile creep of metals at high temperature

Hb5150-1996 test method for tensile endurance of metals at high temperature

Jjg276-88 high temperature creep and rupture strength testing machine

6. Dynamic and static universal testing machine

The main machine of the dynamic and static universal testing machine adopts the double column structure, with the maximum static load of 5kn and the maximum dynamic load of 2.5kn, and the measurement range of 2-100%.

Functional features:

(1) The main engine adopts double column structure.

(2) Symmetrical cyclic fatigue tests shall be carried out on metallic and non-metallic materials. At the same time, relevant tests such as static tension can also be carried out.

(3) The measurement and control system adopts ad850 universal test card and ATOS servo valve, which can realize the automatic control of the whole test process and all keyboard operations.

(4) It has three control modes of load, displacement and deformation and smooth conversion function between control modes. It can automatically collect and process test data, draw test curve and print test report.

Rubber, shock absorber and other materials

Test items: tensile, compression, bending, low cycle and high cycle fatigue, crack propagation, fracture mechanics test

7. Fatigue testing machine

Fatigue testing machine is a machine that can test fatigue in various ways. According to the test frequency, it can be divided into low-frequency fatigue testing machine, medium frequency fatigue testing machine, high-frequency fatigue testing machine and ultra-high frequency fatigue testing machine.

Applicable materials: metal, alloy materials and their components (such as operating joints, fixed parts, spiral moving parts, etc.)

Test items: fatigue characteristics, fatigue life, prefabricated crack and crack propagation test of tension, compression or tension compression alternating load at room temperature

Note: the fatigue test of composite materials can not be carried out by electromagnetic high-frequency fatigue testing machine, because the electromagnetic type is driven by the principle of electromagnetic resonance, which is related to the rigidity of the sample, so the fatigue test of composite materials can only be driven by motor.

8. Impact testing machine

Impact testing machine (English Name: impact testing machine) refers to the material testing machine that applies impact test force to the sample for impact test. Impact testing machines are divided into manual pendulum impact testing machine, semi-automatic impact testing machine, digital display impact testing machine, microcomputer controlled impact testing machine, drop hammer impact testing machine and non-metallic impact testing machine.

Applicable materials: Metallic and non-metallic materials

Test item: impact test

Application scope:

(1) Material selection and development of new materials

(2) Inspection and control of metallurgical products

(3) Process quality supervision

(4) Toughness evaluation under various conditions

(5) One of the important indicators of metallurgical product delivery