Product Overview

The KR‑209A computer‑governed electro‑hydraulic servo universal tester is engineered for mechanical‑property evaluation of steel strands, metallic bars and diverse non‑metallic test pieces. It delivers tensile, compression, bending, and optional shear testing workflows. The complete configuration includes industrial computer, printer, contact‑type electronic extensometer, high‑resolution optical displacement encoder and dedicated analysis software.

The system precisely calculates core material indexes: tensile strength, yield strength, specified non‑proportional extension strength, elongation percentage and elastic modulus. Six distinct real‑time curve sets (force‑displacement, force‑deformation, stress‑displacement, stress‑deformation, force‑time, deformation‑time) can be displayed, saved and printed. Built‑in self‑diagnosis routines assist operators to quickly locate abnormal conditions. This unit serves mining enterprises, research laboratories, higher‑education institutions and construction‑quality‑supervision authorities.

Core Product Competitive Advantages

1. Lower‑Mounted‑Cylinder Dual‑Chamber Main‑Frame Layout Hydraulic actuator is installed underneath the machine bed. The upper cavity provides tensile working space; compression and bending operations are completed between worktable and movable cross‑beam. Motor‑reducer, chain and auxiliary lead‑screw assembly drives cross‑beam travel, allowing quick adjustment of test clearance for specimens with different geometries.
2. Reliable Hydraulic Oil‑Circuit Architecture Hydraulic oil passes inlet filter before entering high‑pressure pump. Manual hand‑wheel valves regulate oil‑flow direction to actuate piston advance and retract. Return‑oil pipelines feed fluid back to the tank, maintaining stable pressure transmission during long‑duration static‑load and destructive‑break tests.
3. Open‑Source Multi‑Functional Measurement‑&‑Control Platform Supports tensile, compression, bending and shear test modes. Operators can freely compose, modify, import and export test workflows and standard parameter templates. Test‑report outputs adopt editable Excel‑compatible format; users customize report layouts. Multi‑sample batch printing and custom sorting functions are available. Hierarchical account management differentiates administrator and ordinary‑tester access permissions to prevent unintended parameter changes.
4. Dual‑Level Hardware Safety Interlock Mechanism Overload protection: once applied force exceeds 103 % of rated maximum load, oil‑pump motor cuts off automatically. Travel‑limit safeguard: when piston arrives at upper mechanical boundary, pump power shuts down immediately to avoid impact damage to frame and internal components.
5. Complete Set of Versatile Standard Fixtures Standard delivery includes tensile gripping assemblies, compression platens and bending‑test jigs. Jaw selections cover round‑bar specimens of varied diameters and flat samples of different thickness and clamping width. Manual‑clamping or automatic‑wedge‑clamping configurations are selectable corresponding to different tonnage grades.

Complete Technical Parameter Table

Standard Complete Test Workflow

1. Pre‑Test Inspection & Parameter Configuration Check hydraulic‑oil liquid‑level, pipe‑joint tightness and safety‑interlock status. Launch dedicated test software, create or recall pre‑configured test procedure, define termination thresholds and output‑report templates.
2. Adjust Test Space & Mount Specimen Operate motor‑driven cross‑beam to set proper cavity height. Secure sample inside corresponding tensile / compression / bending fixture, ensure good axial alignment.
3. Zero‑Calibration Perform force‑value and displacement zero‑reset before formal loading to eliminate initial mechanical offset.
4. Automatic Loading & Data Acquisition Trigger automated test run. Hydraulic system applies load according to preset procedure; software captures force, displacement and deformation data continuously and renders multi‑group real‑time curves.
5. Post‑Test Data Processing & Report Export Upon specimen fracture or reaching stop criteria, test terminates automatically. Review characteristic‑point data, adjust curve markers, export datasets and generate editable inspection reports.
6. Equipment Shutdown Steps Retract piston and cross‑beam back to home position; remove broken specimen, clean fixture surfaces. Close software, power‑off hydraulic station and cut main power supply.

Wide Industrial Application Scenarios

Construction‑Engineering & Bridge‑Material Enterprises

Mechanical‑property inspection for prestressed steel strands, reinforcing steel bars and structural metal components; factory‑delivery acceptance testing for building‑material products.

Metallurgical & Metal‑Processing Plants

Tensile, compression and bending performance verification for alloy bars, metal sheets and forged hardware components.

Mining & Heavy‑Industry Workshops

Quality‑control testing for structural metal parts used in mining equipment.

University & Research‑Development Institutes

Material‑science teaching experiments; mechanical‑characteristic research for newly‑developed metallic and non‑metallic materials.

Third‑Party Engineering‑Quality‑Supervision‑Institutions

Carry‑out standard‑compliant material‑performance tests and issue formal official inspection documents.

Standard Factory‑Full‑Delivery Kit

1. KR‑209A electro‑hydraulic servo tester main‑frame (lower‑mounted‑cylinder dual‑space structure)
2. Complete hydraulic power‑unit assembly and hydraulic‑pipe set
3. Motor‑chain‑lead‑screw cross‑beam height‑adjustment mechanism
4. Full‑range fixture kit: tensile wedge‑grips, compression platens, bending‑test jigs
5. High‑precision force‑measurement module, optical displacement encoder and electronic extensometer assembly
6. Brand‑name industrial‑grade desktop computer + printer hardware bundle
7. Multilingual operation manual plus test‑software CD‑ROM
8. Factory‑issued force‑displacement‑deformation metrology calibration certificate

Global Distributor & After‑Sales‑Support

We provide remote technical support covering procedure editing, parameter tuning and routine maintenance guidance. Spare‑parts stock includes servo‑valves, pressure‑sensors, hydraulic sealing elements and replacement fixture jaws. Custom‑tonnage variants, enlarged‑test‑space frames and special‑purpose fixture assemblies are available for bulk‑purchase orders. Regional exclusive‑agent privileges contain priority‑production scheduling, OEM private‑branding service and complete‑set high‑definition product‑marketing‑image resources.

Product‑Banner‑Marketing‑Slogan

KR‑209A Steel‑Strand‑Purpose Electro‑Hydraulic Servo Universal Tester | For Metal‑Non‑Metal Tensile‑Compression‑Bending‑Shear Performance Test

Core‑Feature‑Labels‑For‑Product‑Images

Lower‑Cylinder Dual‑Space Frame | Multi‑Curve Real‑Time Display | Open‑Editable Test Procedure | Customizable Excel Report | Multi‑Level User Permission | Overload & Stroke Dual‑Safety‑Protection

Safety‑Operation‑Reminder

Ensure specimens are firmly clamped before starting high‑load destructive tests. Keep personnel outside the fragment‑splashing hazard zone. Inspect hydraulic pipelines and sealing components on a regular maintenance cycle.