The core of choosing a suitable hydraulic tensile testing machine is Matching experimental requirements while considering practicality "depends on the load range, sample specifications, accuracy requirements, and application scenarios to avoid blindly pursuing high parameters and waste.

Core selection criteria

Clarify the core parameters of the experiment

Load capacity: based on the maximum required tensile force of the specimen1.2-1.5 times the selection, for example, for testing samples with a maximum tensile force of 500kN, prioritize the 600-1000kN model and reserve a safety margin.

Experimental space: Determine the tensile space (effective stroke) based on the length and diameter of the sample. For large-sized components, a rack with long stroke and wide opening should be selected.

Measurement accuracy: Select the accuracy level according to standard requirements, and select the force value accuracy for routine quality inspection ± 1% is sufficient, and for scientific research or high demand testing, a level of ± 0.5% or higher should be selected.

Match sample type and test standard

Metal materials (steel, aluminum, etc.): focus on high rigidity, high load models, and need to be matched with compatible round bars/The clamping device of the board meets national standards such as GB/T 228.1.

Non metallic materials (such as plastics, rubber, etc.): Attention should be paid to load stability and deformation measurement accuracy, and large deformation extensometers can be used to adapt to corresponding industry standards.

Special specimen (high temperature)/Low temperature environment, irregular parts): Select models with environmental box interfaces and customizable clamping fixtures.

Consider equipment configuration and practicality

Control system: Conventional quality inspection with screen display (easy to operate, low cost), scientific research or automated testing with microcomputer control+Servo system (programmable, data traceable).

Safety performance: It is necessary to have overload protection, emergency stop, and anti fracture splash device to ensure operational safety.

After sales and maintenance: Priority should be given to manufacturers with good brand reputation and local service outlets to ensure convenient calibration and maintenance of hydraulic systems and sensors.

Balancing costs and long-term usage needs

avoid Super demand selection ": Ordinary factory quality inspection does not require the selection of research grade high-precision models to control procurement costs.

Reserve expansion space: If it is possible to test different types of specimens in the future, priority should be given to universal models that can upgrade clamping devices and add testing modules (such as compression and bending).