Fastener high-frequency fatigue testing machine High-frequency fatigue testing machine is used to measure the tensile, compression or tensile compression of metals, alloy materials and their components (such as operating joints, fixed parts, spiral moving parts, etc.) at room temperature Fatigue characteristics, fatigue life, prefabricated cracks and crack propagation tests of alternating loads. After equipped with corresponding test fixtures, the high-frequency fatigue testing machine can carry out three-point bending test, four-point bending test, thin plate tensile test, thick plate tensile test, reinforced steel strip tensile test, chain tensile under sinusoidal load Test, fixed part test, connecting rod test, torsional fatigue test, bending-torsion composite fatigue test, interactive bending fatigue test, CT test, CCT test, gear fatigue test. We have a variety of silicone mold with any shape,such as star\heart\flower\animals etc..Our Silicone Chocolate Mold have below feature: Different Shape Silicone Baking Molds,Excellent quality cake decoration,High food grade material,LFGB,FDA standard, Cake decoration sample supported OEM,ODM are welcomed. Silicone Chocolate Mold Silicone Candy Molds,Silicone Gummy Molds,Silicone Lollipop Molds,Fat Bomb Molds YANGJIANG SHENGHAI INDUSTRIAL&TRADING CO., LTD , https://www.shenghaiyj.com
The maximum load is 250 kN, the equipment selection is from 40KN-300KN, stroke to 8 mm, the operating frequency is 300 Hz, the equipment uses a unique MAGNODYN electromagnetic excitation system that uses resonance to generate vibration.
General performance characteristics:
High reliability • Unmaintained hydraulic source and valve, pump or cooling system • Simple and easy operation • High frequency operation test throughout the test process • Low energy consumption • Software has many practical values ​​and user-friendly operating system interface High frequency fatigue testing machine
MAGNODYN excitation system This system consists of two parts, an electromagnet and a spring (elastic) fixed in the dynamic loading process. A small but constant air gap is required between the magnet and the operating independent static load system. The dynamic circle permits full operation and testing of stand-alone independent loading systems. The MAGNODYN system design allows specimens or components to use active power directly.
Main technical parameters and functions of equipment
General: The test equipment can achieve the following related test standards:
Verification method of JJG 556-1988 axial load fatigue testing machine
HB 5287-1996 Metal material axial load fatigue test method
GB / T 6395-2000 Test method for fatigue crack growth rate of metallic materials
GB / T 4161-1984 Metallic material plane strain fracture toughness KIC test method
GB / T 2038-1991 JIC test method for ductile fracture toughness of metallic materials
Host 1) Peak power of power supply: ≤10 KW (including peripheral devices such as cooling and high temperature devices);
2) It should be equipped with corresponding UPS uninterruptible power supply;
3) The effective test working space width: ＞ 680 mm, depth: ＞ 860 mm;
4) Moving range of beam: ≥300mm;
5) One-way maximum tensile or compression static load: not less than ± 100kN;
6) Maximum tensile and compression alternating load: not less than ± 50kN;
7) Dynamic and static loading system, suitable for load 0 ～ 100KN (force value sensor should have advanced acceleration dynamic compensation);
8) Static accuracy of the sensor: within the load range, it is not greater than 0.5% of the load indication value;
9) Sensor dynamic accuracy: within the load range, not more than 0.5% of the load indication value;
10) Frequency range: 50 ～ 300Hz (frequency can be greater than 300Hz);
11) The maximum distance between the lower fixture and the upper fixture should be: not less than 700mm;
12) The coaxiality of the upper and lower chucks: no more than 10%;
13) Displacement measurement and control accuracy: not more than 0.5% of the indicated value.
4.2.2 Wedge-shaped fixtures and accessories are used to clamp flat and round specimens at room temperature, and corresponding clamping blocks should be configured to ensure the use of the following specimens: 1) Thickness of flat specimens a: 0.2-20mm;
2) Diameter of round sample: 2 ～ 20mm.
4.2.3 Room temperature thread fixture
1) Used for room temperature round screw joint samples;
2) Configure internal threaded joints of the following specifications to meet the use of externally threaded specimens of the same specifications: M8 × 1, M11 × 1, M14 × 1, M16 × 1, M22 × 1, M32 × 1;
4.2.4 Test fixtures and accessories for fatigue crack growth rate (da / dN) of metal materials: The following test requirements for samples shall be met: Sample size B (thickness) × W (width): 20 × 80 mm.
4.2.5 Fracture mechanics CT (compact tensile) specimen fixture and accessories: The following specimen test requirements shall be met: CT (compact tensile) specimen size B (thickness) × W (width) is: 12.5 × 25mm.
4.2.6 Strain extensometer and accessories ★ 1) Static accuracy: not more than? 0.5% of the indicated value; ★ 2) Dynamic accuracy: not more than? 1% of the indicated value; 3) Gauge length: 25mm; 4) Strain range : 10%.
4.2.7 Displacement type (COD gauge) extensometer and accessories ★ 1) Dynamic accuracy: not greater than the indicated value? 0.5%; 2) The data collection rate meets the maximum test frequency requirement during the test; 3) The deformation range is not less than? 2.5 mm . 4.2.8 The standard high-temperature device is used for high-temperature fatigue test of metals at 100 ℃ ～ 1200 ℃. 4.2.8.1 Heating furnace 1) A split-type heating furnace with a stainless steel shell; 2) The heating furnace is easy to install in the rack space and has enough space; 3) Heating furnace size range: length / width / height 250 ~ 400mm / 150 ～ 300mm / 150 ～ 300mm; 4) Furnace inner diameter ≥80mm ★ 5) Average heat strip length ≥50mm (temperature fluctuation within the average heat strip ≤ ± 5 ℃, temperature gradient ≤5 ℃); 6) Furnace shell surface temperature ≤ Room temperature + 50 ° C.
4.2.8.2 Temperature measurement and control device ★ 1) Temperature measurement accuracy≤ ± 1 ℃, and room temperature automatic cold junction temperature compensation deviation≤0.50C; 2) Temperature control accuracy≤ ± 1 ℃; 3) Temperature rise overshoot≤5 ℃; 4) The independent control panel should be simple and clear, and manual and automatic PID temperature control settings can be made; 5) The computer can be used to set the temperature control and real-time temperature data collection and heating process graph display.
4.2.8.3 High-temperature fixture 1) It is used in conjunction with the heating furnace for round thread joint samples and plate fatigue samples at high temperatures; 2) Configure M16 internal thread joints to meet the use of external thread samples of the same specifications; 3) Configuration Corresponding fixtures to meet the use of plate samples with a thickness of 0.5 ~ 2mm; 4) During high temperature tests, the safety of the test and equipment should be ensured to be carried out normally. If cooling of fixture connections is required, a circulating water cooling system should be provided.
4.3 Main functions
4.3.1 The measurement and control and acquisition system of the equipment should have complete and fully functional related hard and soft accessories with load, displacement and strain control methods; 4.3.2 Manual fast and slow adjustment of the position of the beam;
4.3.3 Free setting function of beam speed;
4.3.4 The beam can be locked in time during the test, otherwise there should be corresponding protection settings during the test;
4.3.5 The equipment can be adjusted automatically and manually through computer advanced application software to adjust related parameters, such as system gain, phase, feedback response, excitation and other parameters, to produce the best test frequency response effect;
4.3.6 Closed-loop digital intelligent control and acquisition by computer, running on stable WINDOS / XP platform, multiple control modes (load, displacement, strain, function) online automatic conversion, with separate remote control panel
4.3.7 The software should have dynamic information such as automatic calibration test machine accuracy, automatic zero adjustment, real-time display of force value (stress), deformation, strain and calculation, etc .;
4.3.8 When the predetermined condition or protection state is reached, it has the functions of automatically storing test data and safe shutdown;
4.3.9 There are various test methods for the safe stop and pause functions of the criterion of breaking or failure;
4.3.10 Test data and results should be in international units and can be automatically converted with other engineering units;
4.3.11 Test data storage, retrieval and statistical analysis functions;
4.3.12 Test data can be transmitted and shared on the authorized network, and authorized remote measurement and control;
4.3.13 Support user-defined formula input mode, the software has online help and version upgrade function;
4.3.14 Users can easily and accurately set real-time static dynamic load, displacement, number of cycles, test frequency and strain variable and other parameters according to test requirements, and display dynamic test data and curves in real time;
4.3.15 The test software can automatically generate test results, statistical analysis test reports, automatically store test data results, and can be transmitted and shared with corresponding third-party data processing application software (such as EXCEL, etc.);
4.3.16 There is an emergency brake switch for safety control
Fastener high-frequency fatigue testing machine