Product Overview

Core Technical Strengths

1. Full Touchscreen Intelligent Program Control System
   7-inch industrial color touch interface integrates all test parameters including preload holding time, main load duration and multi-stage load switching. Operators store custom test recipes for one-click recall; the system automatically executes the complete load sequence as required by standards, and allows manual skip of individual steps to accommodate special sample testing demands. All hardness calculation formulas are solidified in the chip, with controllable decimal retention digits to eliminate manual arithmetic errors.
   2.High-Stability Precision Load & Depth Measuring Module

   Equipped high-sensitivity digital micrometer sensor with 0.001mm minimum resolution, paired with closed-loop force feedback structure. The tester supports 5 standard main loads (49N / 132N / 358N / 612N / 961N) plus fixed 9.8N preload, with overall force indication deviation controlled within ±4%. The integral thick cast frame restricts overall structural deformation under full load to ≤0.05mm, ensuring consistent indentation depth readings across parallel test groups.
   3.Dual-Size Interchangeable Alloy Steel Indenters

   Supports Φ5mm and Φ10mm polished hard steel ball indenters for matching soft and rigid plastic substrates. The spherical indenter surface undergoes mirror polishing and anti-rust treatment to avoid scratch interference on sample surfaces, easy to disassemble and replace when switching test materials. The vertical moving stroke reserves 25mm clearance between indenter and base platform, compatible with samples up to 10mm maximum thickness.
   4.Complete Built-In Standard Compliance Logic

   Pre-programmed test procedures aligned with ISO 2039-1, GB/T 3398.1, JB/T 741 and JJG 369 metrology verification standards. The system automatically judges valid indentation depth range (0.150~0.350mm) and prompts load adjustment if readings exceed the standard window, effectively avoiding invalid test data caused by improper force selection.
   5.Compact Integrated Bench Layout With Wide Operation Space

   The 55mm horizontal distance between indenter and machine side wall provides ample room for large-format plastic specimens. The whole machine adopts anti-corrosion electrostatic paint coating, small footprint suitable for limited lab countertops. All core transmission parts use wear-resistant lubricated structures to lower long-term maintenance frequency.
   6.Complete Data Output & Traceability Function

   All test records including indentation depth, load grade and hardness values are automatically saved with timestamps. The system supports offline data review and batch export, matching external printing equipment to generate standardized inspection reports for factory quality filing and third-party audit submission.

Full Technical Specification Table

Standard Test Operation Procedure

1. Sample Pre-Inspection & Placement
   Prepare flat, bubble-free plastic specimens with thickness ≥4mm; ensure each measurement point maintains over 10mm spacing from sample edges and adjacent indent points. Lay the specimen flat on the horizontal base platform to eliminate tilting.
2. Indenter & Parameter Setup
   Install the matched steel ball indenter on the spindle, power on the touchscreen and select corresponding test recipe, set preload holding time and main load dwell duration per material standard requirements.
3. Automatic Preload Positioning
   Lower the indenter to contact the sample surface, the system applies fixed 9.8N preload automatically to establish the zero reference plane for indentation depth measurement.
4. Standard Main Load Application
   The machine automatically switches to the selected main load and maintains the specified holding period, continuously tracking indentation depth variation under constant force.
5. Hardness Auto-Calculation & Data Storage
   After load retraction, the host computes ball indentation hardness value instantly and stores the full test record. Repeat testing at least 3 positions on one specimen to take the average as final result.
6. Post-Test Cleaning & Shutdown
   Remove the tested sample, wipe residual plastic debris from indenter and base platform; cut off power after daily testing and cover the machine with dust-proof cloth.

Qualified Sample Requirements

1. Sample surface must be smooth, free of scratches, bubbles, cracks or embedded impurities that affect indentation depth reading.
2. Minimum sample thickness is 4mm; recommended standard specimen dimension: 50×50×4mm flat sheet.
3. Each indentation center shall keep a minimum 10mm gap from sample edges and neighboring test points to prevent edge effect interference.

Applicable Testing Materials & Industry Scenarios

Automotive Engineering Plastics

Construction Plastic Profiles

Household & Injection Molding Plastics

Third-Party Testing & University Labs

Standard Factory Delivery Kit

1. KR-1077 touchscreen ball indentation hardness tester main unit
2. Φ5mm + Φ10mm alloy steel ball indenters (one set each)
3. High-precision depth deformation sensor assembly
4. Standard horizontal specimen base platform
5. Complete load control and data acquisition system
6. Multilingual operation manual aligned with ISO & GB standards
7. Factory inspection qualification certificate and electrical wiring diagram

Daily Maintenance & Operation Precautions

1. Install the tester in a dry, dust-free lab environment away from vibration sources and corrosive chemical fumes; keep the main frame well grounded.
2. Apply loads from low to high if material hardness is unknown, to avoid excessive indentation exceeding the valid measuring range.
3. Ensure vertical perpendicularity between indenter and sample surface during testing; avoid impact or vibration during load holding stages.
4. Regularly wipe the steel ball indenter and platform surface to remove plastic residue; perform full calibration every six months to guarantee test accuracy.

Global Distributor & After-Sales Support

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