Product Introduction

Core Product Advantages

1. 304 Stainless Steel Corrosion-Resistant Bath Structure

   Outer cabinet uses high-strength cold rolled steel with electrostatic anti-rust coating; inner tank, top cover and all internal support frames are integral 304 stainless steel forming. The material resists long-term erosion by surfactant test liquid, no rust or liquid leakage after years of continuous batch testing, easy to wipe clean after daily operation.

2. High-Stability PID Constant Temperature Control System

   Built-in platinum resistance temperature sensor with digital closed-loop PID algorithm, temperature adjustable from ambient up to 100℃, constant temperature precision controlled at ±0.5℃. Built-in silent circulating stirring motor balances liquid temperature uniformly across the entire tank, eliminating local hot or cold zones that cause inconsistent cracking test results for parallel specimens.

3. Complete Standard Sample Processing Accessory Kit

   All matched fixtures comply with ASTM and national standard dimensional requirements, including precision notching tool with adjustable 0.3–0.65mm scratch depth, standard 38×13mm sample cutting mold, U-shaped bending fixture and sample transfer rack. Operators can finish specimen cutting, notching and stress fixing without purchasing extra auxiliary tools.

4. Multi-Station Optional Test Tube Rack Design

   Standard configuration supports 8 glass test tubes; upgraded 10-position rack is available for high-volume laboratory testing. Transparent glass tubes fully immerse bent samples in medium, enabling real-time visual observation of crack generation without taking specimens out of the constant temperature bath, greatly improving testing efficiency.

5. Mobile Integrated Compact Layout

   Whole machine equipped silent universal moving casters with brake locks, convenient to shift between workstations in the lab. The overall small footprint fits standard lab countertops, only requiring single-phase 220V power supply without special industrial wiring configuration.
6. Long Service Life Low Maintenance Design

   3KW low-power heating assembly with over-temperature automatic power-off protection prevents dry burning damage. All fixture tools are made of hardened alloy steel, not easy to deform after repeated use, effectively reducing later replacement and maintenance costs for laboratories.

Full Technical Parameter Specification Table

Standard Complete Test Operation Flow

1. Sample Cutting & Standard Notching
   Use matched cutting mold to stamp plastic sheet into standard 38×13mm strips; install adjustable notching blade to carve standardized scratches on specimen surface according to material density matching standard A/B/C depth parameters.
2. Specimen Bending & Fixed Stress Loading
   Place notched sample into U-shaped bending fixture to form consistent tensile stress at the scratch position, transfer the fixed specimen into standard glass test tube via dedicated transfer tool.
3. Bath Preheating & Medium Filling
   Pour qualified surfactant test liquid into glass tubes, place tubes onto stainless steel rack and immerse into constant temperature water tank; power on the machine and set target test temperature (commonly 50℃ per ASTM D1693), wait 30 minutes for full temperature stabilization.
4. Timed Crack Observation Record
   Start test timing, regularly observe specimen surface through transparent tube wall at fixed intervals, record the exact time when microcracks appear on each sample surface, calculate F50 median failure time for batch evaluation.
5. Post-Test Specimen Taking & Tank Cleaning
   Complete the preset test cycle, take out test tubes and remove all specimens, pour out waste surfactant liquid, wipe stainless bath inner wall and fixtures clean, drain residual water inside the tank.
6. Equipment Shutdown & Storage
   Turn off heating and stirring power supply, fully dry the bath tank interior, store all fixture tools in matching storage box to avoid scratch blade rust and deformation.

Wide Industrial Application Scenarios

HDPE Pipe & Raw Material Manufacturers

Wire & Cable Production Enterprises

Modified Polyolefin & Masterbatch Factories

New Material R&D Laboratories

Third-Party Polymer Testing Institutions

Standard Factory Complete Delivery Kit

1. KR-726 main constant temperature ESCR test bath host (304 stainless inner tank + digital temperature controller + circulating stirring motor)
2. Stainless steel multi-position test tube rack (8 stations standard / 10 stations optional)
3. Precision adjustable notching tool + 3 spare alloy scratch blades
4. Standard 38×13mm sample cutting mold
5. U-shaped specimen bending fixture + dedicated sample transfer tool
6. 3 standard transparent glass test tubes
7. Universal moving brake casters
8. Multilingual operation manual aligned with ASTM D1693 & GB standards
9. Factory dimensional & temperature calibration qualification certificate

Global Distributor & After-Sales Support

English Overlay Text For All Product Pictures