Product Overview

The KR‑215 servo‑hydraulic compression‑bending tester is engineered for compressive‑strength performance evaluation of construction‑industry specimens including bricks, stone blocks, cement mortar and concrete samples. This closed‑loop hydraulic equipment combines high‑pressure oil power unit, digital servo‑valve assembly, precision force transducers and dedicated computer test software. It meets GB, ISO, ASTM and multiple international building‑material‑testing specifications, supporting constant‑load and constant‑stress loading modes for automatic compression‑strength measurement. It is widely deployed in construction‑material laboratories, cement factories, road‑and‑bridge engineering institutes and third‑party building‑material‑certification agencies.

Core Product Competitive Advantages

1. Stable Servo‑Hydraulic Loading Circuit High‑pressure pump delivers hydraulic oil, which flows through one‑way valves, high‑pressure filters and pressure‑regulating assemblies before entering digital servo‑valve. Computer‑issued control signals adjust servo‑valve opening magnitude and flow direction, precisely governing oil volume fed to the working cylinder to realize stable closed‑loop constant‑force loading. The whole oil‑circuit layout reduces pressure fluctuation during specimen fracture, improving repeatability of test results.
2. High‑Precision Digital Closed‑Loop Control System Composed of digital servo‑valve, high‑accuracy force‑sensor, industrial controller and dedicated analysis software. It supports real‑time force closed‑loop regulation, constant‑loading‑rate and constant‑stress‑rate test workflows. The system completes full‑process electronic data acquisition without manual intervention during testing.
3. Powerful PC‑Based Data‑Processing Software Automatically computes compressive‑strength index after specimen failure. Users are allowed to customize report templates; test data can be exported into editable Excel files for further sorting and archiving. Completed inspection documents can be directly printed out for laboratory‑record filing.
4. Reliable Overload‑Safety‑Protection Mechanism Once actual test force exceeds 103 % of the preset maximum rated load, the system will trigger interlock protection and cut off hydraulic‑pump motor power supply immediately, protecting hydraulic cylinder, sensor and main‑frame structure from overload‑caused damage.
5. Heavy‑Duty Compression‑Platen Assembly Standard hardened upper‑and‑lower pressure‑bearing platens guarantee uniform force distribution for building‑material samples. Compact overall footprint fits standard laboratory bench layout for daily batch‑sample testing.

Complete Technical Parameter Table

Standard Complete Test Operating Workflow

1. Pre‑Test Inspection & Parameter Configuration Check hydraulic‑oil liquid‑level, pipeline sealing status and safety‑interlock function. Boot computer and launch dedicated test software, select corresponding building‑material test template, configure loading‑rate, overload‑threshold and report‑template parameters.
2. Specimen Placement Position brick, cement or concrete sample centrally on the lower pressure platen; ensure good vertical coaxial alignment between specimen and upper pressure‑head to avoid eccentric‑loading interference.
3. Automatic Closed‑Loop Compression‑Test Execution Initiate test‑start command. Servo‑hydraulic system applies load following preset loading‑rate; system continuously collects force‑value data throughout the whole compression process.
4. Post‑Test Data Analysis & Report Export When specimen crushes and fails, testing automatically terminates. Software calculates compressive‑strength value; users can view test records, export Excel‑format datasets or print formal inspection‑reports.
5. Equipment Shutdown Steps Retract piston to home‑position, remove broken specimen fragments and clean pressure‑platen surfaces. Close test‑software, shut‑down hydraulic‑power‑unit and cut off main‑power supply.

Wide Industrial Application Scenarios

Cement & Construction‑Material Factories

Compressive‑strength acceptance testing for cement mortar test‑blocks, concrete cubes, bricks and stone raw‑materials for factory‑release quality‑control.

Highway & Bridge‑Engineering Laboratories

Mechanical‑property verification for road‑construction building‑material samples in engineering‑project‑site‑laboratories.

Building‑‑Science R&D Departments

Performance‑comparison testing for newly‑developed cement‑based composite building‑materials.

University Civil‑Engineering Laboratories

Teaching‑experiment equipment for civil‑engineering‑material‑mechanics courses.

Third‑Party Accredited‑Building‑Material‑Testing‑Organizations

Carry‑out standard‑compliant compression‑strength evaluation and issue official inspection‑documents for project‑acceptance audits.

Standard Factory‑Full‑Delivery Kit

1. KR‑215 servo‑hydraulic compression‑bending‑tester main‑frame
2. Complete hydraulic‑power‑unit and piping assembly
3. Digital servo‑valve control module and high‑precision force‑sensor
4. Standard set of hardened upper‑lower compression‑pressure‑platens
5. Industrial desktop‑computer + printer hardware bundle
6. Multilingual dedicated test‑analysis‑software CD‑ROM
7. Multilingual printed‑operation‑manual complying with GB / ISO / ASTM building‑material‑test‑standards
8. Factory‑issued force‑measurement metrology‑calibration‑certificate

Global Distributor & After‑Sales‑Support

We provide remote‑one‑on‑one operational guidance covering software‑parameter‑setting, loading‑rate configuration and daily hydraulic‑system maintenance. Spare‑parts stock includes digital servo‑valves, pressure‑sensors, sealing‑kits and replacement compression‑platens. Bulk‑order‑customers may request custom‑tonnage variants and overseas‑power‑conversion kits. Regional‑exclusive‑agent privileges contain priority‑production‑scheduling, OEM private‑branding‑services and complete‑set high‑definition‑product‑marketing‑image‑resources.

Product‑Banner‑Marketing‑Slogan

KR‑215 Computer‑Controlled Fully‑Automatic Hydraulic Compression‑Bending‑Strength Tester | For Brick‑Cement‑Concrete‑Stone Building‑Material Compression‑Strength Evaluation

Core‑Feature‑Labels‑For‑Product‑Images

Digital Servo‑Valve Closed‑Loop Control | Constant‑Load / Constant‑Stress Loading | Customizable Excel‑Report Template | Overload Automatic‑Shut‑Off Protection | Complies GB‑ISO‑ASTM Building‑Material‑Test‑Standards | Heavy‑Duty Compression‑Platen Assembly

Safety‑Operation‑Reminder

Stand clear of specimen fragment‑splashing zone during destructive compression tests. Regularly inspect hydraulic pipelines and sealing‑components for oil‑leakage risk.