RPD-50G High Temperature Creep Fatigue Testing Machine

1、 Application scope

RPD-50G High Temperature Creep Fatigue Testing MachineMainly used for high-temperature alloys, titanium alloys, other ferrous and non-ferrous metal materialsCreep fatigueMechanical performance testing,Creep fatigue testasCreep fatigueZero crossing creep under tension and compression, creep-Fatigue, fatigue creepWaiting for the experimentThe process is either pulling or pressing, and the pulling and pressing can cross zero without any gap.The equipment fully complies withGB/T38822 Metal Creep Fatigue Test Standard.

Our newly developedRPD-50G High Temperature Creep Fatigue Testing MachineFor high stiffness dualColumn andMoving crossbeamforMovable structure，Perform zero crossing of tension and compressionCreep fatigue testAt that time, lower the upper crossbeam to reduce the distance between it and the workbench (lower crossbeam) (stabilizing the pressure bar), replace it with a dynamic rigid connection fixture, and then apply a certain amount of pre pressure to the connecting rod. Lock the clearance nut to achieve a seamless rigid connection structure, and replace it with a shorter high-temperature furnace. The above work is all aimed at reducing the instability phenomenon during the dynamic zero crossing test of the pressure bar.

2、 Verification and acceptance standards

JJG556 Verification Specification for Axial Fatigue Testing Machine

GB/T38822 Metal Creep Fatigue Test Standard

GB/T2039-2012 creep

HB5150-1996persistent

HB5151-1996creep

3、 Main technical indicators

1. Host

Creep fatigueLoading capacity:±50kN

Measurement error of experimental force:≤± 0.5% indication (from maximum test force)2%Start)

Stability of experimental force control:≤±0.5%

frequency0.01～0.5Hz

Creep fatigue testWaveform: Satisfy triangle wave, trapezoidal wave, cosine wave, custom waveform

Deformation measurement error: dynamic extensometer≤± 0.5% F.S (calibrated at room temperature)

Maximum travel of the pull rod:50mm

Chuck moving speed range:0.01～50mm/min

Clamping head movement speed error:≤±0.5%

Space adjustment method: The manual control box controls the lifting and manual locking of the electric cylinder;

Experimental adjustment method:7-inch color touch screen, dual display and dual control of testing software;

Host coaxiality：≤8%

Timing error:±0.1%

Weight:1200kg

The optional high-temperature system is as follows

2. Deformationmeasurement system

structural form-Creep fatigue：

Can achieve tension and compression fatigueLabor, maximum strain range for±0.8%；

creepThe fatigue test adopts a high-temperature imported ceramic rod axial strain extensometer and supporting structure measurement system.

Applicable style:comply withGB/T38822 Metal Creep Fatigue Test Standard

Dynamic circular specimen (mechanical structure)

Deformation measurement sensor:

Dynamic adoptionEpson 3448 or 3549 typeHigh-temperature extensometer.gauge length25mm; maximum deformation ± 2.5mm.

Deformation measurementResolution:

Dynamic:0.001mm

3. Electric furnace and temperature control system

3.1Creep fatigueExperimental high-temperature furnace structure: The experimental furnace is designed as a split type structure, which facilitates the loading and unloading of samples. The furnace shell is made of double-layer high-quality stainless steel, and the insulation material is of high qualityLightweight ceramic fiber boardGood insulation effect; According to the highest temperature900℃Using multiple segmentsFurnace wireHeating group heating, temperature control adopts intelligent microcomputer digital regulator; Integrated and controlled electrical cabinet. And reserve a ceramic rod socket on the side of the imported extensometer.

Operating Temperature300～900℃

Mean tropical length:≥40mm

Temperature fluctuation:≤±2℃

Temperature gradient:≤5℃

Furnace tube and electric furnace dimensions:Inside the furnace:Φ60mm

External dimensions:Φ230×260 mm

Furnace wire (electric heating element): using multiple sectionsFurnace wireHeating group heatingLow voltage, high current power supply， 安全性高。

Service life of electric furnaceContinuous working time at 1000 ℃, ≤ 50000 hours.

Power Supply:380V±10%； 50Hz±2%

Heating power:4KW

Temperature measurement and control instrument: digital display.

The use of multi-stage and multi loop thyristor phase-shifting zero crossing control for furnace temperature has the characteristics of small current impact and low pollution to the power grid, which can extend the service life of the furnace wire to a certain extent.

Cold end automatic compensation error is less than0.5 ℃, can be freely matched with various thermocouples.

Thermocouple for temperature measurement: usingK-type thermocouple, capable of stable operation at 900 ℃ for a long time, φ0.5mm，

long800mm， 3 pieces per unit. Thermocouples are easy to disassemble.

The temperature control meter is integrated into the control cabinet.

4. High temperature fixtures

4.1 Creep fatigue testpull rod: 1 set/unit

Dynamic high-temperature fixtures require special devices: consisting of upper and lower water-cooled pull rods, clearance clearance top rods, clearance clearance nuts, and high-temperature clamps.

Bar fixture1 set/set of M12 thread;

M16 thread,Try to keep the sample gauge length as small as possible, which is beneficial for the testing machine to remain stable and reduce loading fluctuations;

Operating Temperature300～1050℃

Clamping structure: mechanical structure

Applicable samples:φ5/φ6Two end threadsM12

Material used:DZ22

6. The equipment meets the following working conditions

Power Supply:220V±10%、380V±10%； 50Hz±2%

Ambient temperature10℃～45℃

relative humidity20%～80%

Testing machine noise: meets national standard requirements

The installation of power lines is carried out through the use of distribution line entry slots, ensuring a clean and orderly site after installation.