SATRA TM55 Leather Low-Temperature Flexing Tester Manufacturer | Factory Direct Sale

Get a quote：

Whats/App: +86 156 1874 6768

Web: standard-groups.com

Features

1. Inner and Outer Tank Material: Stainless Steel #304

2. Controller: PLC Control System with Touchscreen Display

3. Protective Devices: Thermal Protection Shutdown, Ground Fault Protection Shutdown, Over-Temperature Protection, Overload Protection, and other functions

Parameters

Item	Specifications
Temperature Range	Room temperature ~ -30°C
Inner Chamber with Low-Temperature Flexing Fixture	- Fixture quantity: 12 sets- Sample size: 70mm×45mm- Flexing angle: (22.5±0.5)°- Flexing rate: (100±5) cycles/min- Flexing count range: 0 ~ 999.999 cycles- Distance between upper edge of lower fixture and upper fixture: (25.0±0.5) mm
Control Accuracy	±0.5°C, V4.0
Temperature Uniformity	±2°C
Cooling Rate	Approximately 45 minutes from room temperature to -30°C
Refrigerant	R404 (environmentally friendly refrigerant)
Compressor Start Delay	5 minutes
Power Consumption	4KW
Insulation Material	Rigid foam and glass wool
Counter	Touchscreen display, adjustable from 0 ~ 999.999
Viewing Window	(210×35×270) mm, two-layer vacuum glass
Viewing Window Light	P1 lamp, 5W
Power Supply	AC220V 50Hz
Motor	Beltless, multi-imported gear reduction motor
Inner Chamber Dimensions	(60×60×55) cm
Overall Dimensions	(110×105×160) cm
Weight	Approximately 420 kg

Accessories

Main Unit: 1 unit

Flexing Fixture: 1 set

Chinese Instrument Manual: 1 copy

Instrument Warranty Card: 1 copy

Upper Material Low-Temperature Flexing Test Piece: 70×65mm

Product Certificate of Conformity: 1 sheet

Laser Engraving Die Cutter: 1 piece

Product Operation Manual: 1 copy

Delivery Note: 1 sheet

Acceptance Note: 1 sheet

Test Procedures

1. Equipment Preparation

‌Installation and Calibration‌: Position the testing machine on a level, stable workbench to ensure no wobbling. Connect the power supply and verify electrical connection. Install the bending die, adjust the fixture position to align with the power output center, and set appropriate clamping force based on specimen thickness.

‌Environmental Check‌: Confirm the laboratory environment meets standard test conditions (e.g., temperature, humidity) to prevent external factors from interfering with test results.

2. Specimen Preparation

‌Cutting and Inspection: Cut specimens according to standards (e.g., ASTM D1790 or QB/T 2714), typically sized 70mm × 45mm or 70mm × 25mm. Inspect edges for neatness, ensuring no notches or cracks, and verify the weathering surface shows no significant defects.

Folding and Securing: Fold the sample 180° with the weathered surface facing outward, aligning edges flush. Secure with clamps or tape to prevent misalignment.

3. Parameter Settings

Temperature Setting: Configure the low-temperature chamber based on material properties (e.g., standard leather or cold-resistant specialty materials). Range typically spans -30°C to -50°C with ±0.5°C temperature control accuracy.

‌Bending Parameters: Set the bending angle (e.g., 22.5° ± 0.5°) and speed (100 ± 5 cycles/minute) to comply with test standards (e.g., ASTM D813 or ISO 132).

4. Test Execution

‌Pre-cooling Treatment: Place the specimen and fixture into the low-temperature chamber. Maintain at the set temperature for 1-2 hours to ensure uniform specimen temperature.

‌Initiate Test‌: Within 1 second, press the upper plate of the flexing machine to the preset gap. Hold for 1 second before removing the specimen. Start the testing machine and monitor its operation to ensure temperature, speed, and angle align with settings.

‌Process Monitoring‌: Continuously check instrument displays. Immediately halt the machine and investigate if temperature anomalies or flexing deviations occur.

5. Result Evaluation

‌Recovery and Inspection:‌ After the specimen returns to room temperature, examine the bending area with a magnifying glass. Document any cracks, delamination, or fractures. Results are graded as “No Cracks” or “Number of Bends at Crack Occurrence.”

‌Data Recording:‌ Meticulously log test parameters and defect types for material performance assessment.

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