High Precision Moulding Sand Strength Tester QR-ZSL-A Intelligent Hot And Wet Tensile Strength

The QR-ZSL-A Intelligent Hot and Wet Tensile Strength Touch Screen Tester is a cutting-edge instrument designed to evaluate the hot wet tensile strength and room temperature wet tensile strength of molding sand. It is also widely used for bentonite quality analysis and is recognized as one of the most effective methods to determine the anti-sand inclusion performance of molding sand.

Equipped with advanced microcomputer intelligent control, a high-precision stepper motor loading system, an automatic temperature-controlled lifting system, and a color LCD touch screen interface, the QR-ZSL-A provides fully automated testing with exceptional precision, stability, and reliability. It has become an essential measuring instrument for scientific research, teaching, and industrial production in the foundry and materials industries.

1. Working Principle

The QR-ZSL-A is designed to simulate the moisture migration mechanism that occurs in sand molds during heating. When a sand mold is exposed to molten metal, heat causes moisture in the sand to redistribute, forming a high-water-content layer that weakens mold strength.

• Process Overview:

  1. Place the prepared sand sample (Ø 50 × 50 mm) with the sample cylinder on the main guide rail.

  2. Heat the bottom of the sample automatically at 320 °C for 20–30 seconds.

  3. A dry sand layer (about 4 mm) and a condensation moisture zone form at the heated surface.

  4. The system then automatically applies load using the stepper motor.

  5. The force curve is displayed dynamically on the LCD screen.

  6. The machine measures tensile strength, displays results, and stores data.

  7. A report can be printed automatically for documentation and quality control.

This simulation accurately reflects real casting conditions, allowing foundries and laboratories to predict mold performance, prevent casting defects, and ensure stable product quality.

2. Main Technical Indicators

• Measurement Range: 0–25000 Pa

• Indication Accuracy: ± 1.0%

• Loading Speed: 3.0–10 mm/min (automatically adjustable)

• Sample Size: Ø 50 × 50 mm

• Temperature Control Range: Room temperature to 500 °C

• Temperature Accuracy: ± 1 °C

• Power Supply: AC 220 V ± 10%, 50 Hz

• Rated Power: 500 W

• Working Environment: Room temperature, relative humidity ≤ 90%

• Dimensions (L × W × H): 500 × 400 × 620 mm

3. Key Features

1. Color LCD Touch Screen Interface

   • Modern Chinese-language operating system with clear visual display.

   • Easy-to-use menus, full-color graphics, and intuitive control.

2. High-Precision 64-Bit AD Data Collection

   • Ensures fast sampling and accurate measurement results.

   • Provides stable and reliable performance across multiple tests.

3. Dynamic Curve Display

   • Real-time visualization of the force value curve during the testing process.

   • Enables detailed analysis and improved understanding of sand strength behavior.

4. Automatic Temperature-Controlled Heating Plate

   • Sophisticated lifting system measures and adjusts plate temperature.

   • Features automatic compensation technology to ensure consistent heating.

5. Stepper Motor with Micron-Level Precision

   • Provides smooth, accurate, and fully automated loading and unloading.

   • Loading speed and displacement are controlled with high accuracy.

6. High-Precision Tension and Pressure Sensors

   • Capable of testing both at room temperature and high temperature.

   • Delivers stable, reliable data for industrial and scientific use.

7. Password Protection Function

   • Prevents unauthorized system adjustments.

   • Securely manages sensitive test parameters and results.

8. Comprehensive Data Management

   • All collected data is stored in the system’s database.

   • Data can be queried, displayed, and printed without restriction.

9. Reliable and Durable System Design

   • Low failure rate and strong system functionality.

   • Designed for continuous operation in demanding laboratory and industrial environments.

4. Product Advantages

• Dual-Function Testing: Measures both hot wet tensile strength and room temperature wet tensile strength in one device.

• High Accuracy: ± 1.0% measurement precision ensures reliable and repeatable results.

• Automation and Efficiency: Fully automated heating, loading, measuring, storing, and printing streamline the entire testing process.

• Real-World Simulation: Accurately replicates casting conditions to predict sand inclusion defects.

• Data Security: Built-in password protection and robust database management guarantee test reliability and traceability.

• User-Friendly Operation: Touch screen interface, intuitive menus, and real-time curves make the system easy to use even for non-experts.

• Versatile Application: Suitable for industrial production, research, and educational purposes.

5. Applications Across Industries

The QR-ZSL-A is widely applicable in industries where casting quality and sand performance are critical:

• Foundries and Casting Plants

  • Evaluates sand and binder properties to prevent casting defects.

  • Ensures molds maintain structural integrity during metal pouring.

• Raw Material Quality Control

  • Assesses the performance of bentonite and other binders used in molding sand mixtures.

• Scientific Research Institutions

  • Provides accurate, high-resolution data for the study of sand properties under heat and moisture conditions.

• Universities and Technical Schools

  • Used in teaching laboratories to train students in material testing, foundry engineering, and quality control.

• Industrial R&D Laboratories

  • Supports the development of new sand formulations and binders to improve casting performance.

6. Why Choose the QR-ZSL-A?

The QR-ZSL-A Intelligent Hot and Wet Tensile Strength Touch Screen Tester is more than just a laboratory instrument—it is a comprehensive quality assurance solution. By combining automation, accuracy, and durability, it ensures the highest standard of testing efficiency and reliability.

Key reasons to choose QR-ZSL-A:

• Accurate and repeatable measurement of tensile strength.

• Full automation reduces operator influence and testing errors.

• Compact and durable design for long service life.

• Strong data management with storage, querying, and reporting functions.

• Wide adaptability for industrial, research, and educational use.

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For better online discoverability, the following keywords are integrated:

• Intelligent Hot and Wet Tensile Strength Tester

• QR-ZSL-A Touch Screen Sand Strength Tester

• Foundry Sand Tensile Strength Testing Machine

• Bentonite Quality Testing Equipment

• High-Precision Sand Testing Instrument

• Molding Sand Anti-Sand Inclusion Tester

• Wet Tensile Strength Testing Machine

Conclusion

The QR-ZSL-A Intelligent Hot and Wet Tensile Strength Touch Screen Tester represents the next generation of sand testing technology. With its intelligent control systems, color LCD touch screen, advanced stepper motor loading, and robust temperature management, it delivers precise, reliable, and efficient testing for molding sand and raw materials like bentonite.

Its ability to simulate real casting conditions, measure tensile strength at both room and elevated temperatures, and provide comprehensive data analysis makes it an essential tool for foundries, quality control laboratories, research institutions, and educational facilities.

By choosing the QR-ZSL-A, industries and laboratories gain a high-precision, fully automated, and user-friendly solution that enhances casting quality, reduces defects, and improves production efficiency.