Hunan Zhenhua Blog

Technical notes, application guidance, standards commentary, and company updates for thermal and materials testing laboratories.

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FeaturedTechnical NoteJuly 26, 2026

High-Temperature Contact-Angle Measurement for Molten and Solid Interfaces

A high-temperature contact-angle instrument measures wetting behavior between melts and solids in ceramics, high-temperature alloys, and composites. Specimens are heated to nearly 2,000 °C under vacuu...

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Technical NoteJuly 20, 2026

High-Temperature Flexural-Strength Tester for Refractory Materials

A high-temperature flexural-strength tester, also called a high-temperature bending-strength tester, applies a bending load to a bar-shaped refractory specimen in a heated furnace and measures its mod...

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Technical NoteJune 21, 2026

Thermal-Property Analyzer: Principles and Material Testing Applications

A thermal-property analyzer measures thermal conductivity, thermal diffusivity, and specific heat capacity. It simulates defined heat-flow conditions to quantify heat conduction and heat storage for t...

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Technical NoteJune 11, 2026

Phase-Transformation Analyzer: Monitoring Principles and Materials Applications

A phase-transformation analyzer measures thermodynamic parameters and kinetic behavior during melting, solidification, crystallization, and other heat-absorbing or heat-releasing transformations. It m...

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Technical NoteMay 24, 2026

Coefficient-of-Thermal-Expansion Tester: Measurement Principle and Applications

A coefficient-of-thermal-expansion tester measures specimen length change during heating and calculates average and instantaneous linear coefficients of thermal expansion. Thermal expansion mismatch c...

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Technical NoteMay 19, 2026

High-Temperature Viscometers for Molten Materials

The viscosity of glass melts, ceramic glazes, molten metals, solder paste, and high-temperature polymers affects forming, leveling, wetting, and finished-product performance. A high-temperature viscom...

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Technical NoteApril 22, 2026

Operating Procedure for a High-Temperature Thermal Conductivity Analyzer

This is a general operating outline for a high-temperature thermal-conductivity analyzer. Apply the stated settings only to a verified instrument configuration, its supplied procedure, and trained ope...

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Technical NoteApril 16, 2026

Operating Procedure for a Laser Flash Thermal Diffusivity Analyzer

A laser flash analyzer uses a non-contact laser flash method to measure the thermal diffusivity of materials. The checklist covers system checks, specimen preparation, testing, data processing, mainte...

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Technical NoteMarch 22, 2026

Dilatometer for Thermal Expansion and Contraction Testing

A dilatometer measures thermal expansion coefficients and shrinkage of metals, ceramics, glass, and composite materials. Measurement precision is ±0.1 μm, and the temperature-control range is room tem...

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Technical NoteMarch 19, 2026

PRUDENT UAE Engineers Visit Hunan Zhenhua Analytical Instruments

Two engineers from PRUDENT UAE in Abu Dhabi, United Arab Emirates, visited Hunan Zhenhua Analytical Instruments Co., Ltd. for a one-day exchange on March 18, 2026. The discussions covered equipment op...

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Technical NoteMarch 16, 2026

Thermal Conductivity Testers for Material Performance Evaluation

Thermal-conductivity testers support material selection, process optimization, and product development in new energy, electronics, building insulation, and aerospace. Hot-wire, plate, and guarded-hot-...

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Technical NoteFebruary 9, 2026

2026 Chinese New Year Holiday Notice

The 2026 Chinese New Year holiday will run from February 11 through February 22, for twelve days including adjusted rest days. February 23, the seventh day of the lunar new year, will be a working day...

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Technical NoteFebruary 8, 2026

Thermal Conductivity Testing in Electronics, Buildings, and New-Energy Materials

A thermal conductivity instrument measures the rate of heat transfer through materials and supports electronic thermal design, building-energy assessment, and new-energy materials research. Electronic...

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Technical NoteFebruary 6, 2026

Specific Heat Capacity Testing: Sample Preparation, Procedure Selection, and Data Analysis

Specific heat capacity is a core thermophysical property. It is the heat required to raise the temperature of a unit mass of a substance by 1 K. A specific heat capacity tester measures heat changes d...

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Technical NoteJanuary 13, 2026

How to Use a Glass Annealing Temperature Tester Correctly

During glass forming, rapid temperature changes create temperature gradients between the inner and outer layers. The shape and thickness of the product and the degree of cooling can also create irregu...

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Technical NoteDecember 31, 2025

New Year Team Outing to Liling, the “Porcelain Capital”

Hunan Zhenhua Analytical Instruments Co., Ltd. employees and their families visited Liling on December 27, 2025, for a one-day team outing before the 2026 New Year. The itinerary included the Liling C...

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Technical NoteSeptember 21, 2025

Applications of Laser Thermal Conductivity Analyzers Across Industries

A laser thermal conductivity analyzer measures thermal conductivity, thermal diffusivity, and specific heat capacity. The analyzer uses non-contact heating for materials development, quality control, ...

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Technical NoteSeptember 11, 2025

Applications of Dilatometers in Thermal-Deformation Studies

A dilatometer measures dimensional change as temperature varies and calculates linear or volumetric coefficients of thermal expansion. It is used in research, production, and quality inspection of cer...

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Technical NoteAugust 24, 2025

Thermal Conductivity Analyzers and Heat-Transfer Measurement

A thermal conductivity analyzer measures thermal conductivity and can provide quantitative data for material development and process evaluation. Steady-state and transient methods are used. In the las...

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Technical NoteAugust 12, 2025

Specific Heat Capacity Analyzers: Measuring a Material’s Thermal Storage Potential

Specific heat capacity—the ability of a substance to absorb heat—may seem abstract, but it profoundly affects energy storage, climate regulation, and many engineering applications. Specific heat capac...

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Technical NoteJuly 25, 2025

Thermal Conductivity Testers: Methods, Operation, and Applications

Thermal conductivity testers measure heat transfer in materials. Steady-state and transient methods based on Fourier’s law are used. A steady-state method establishes a stable heat-flow field and uses...

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Technical NoteJuly 7, 2025

Operational Guidelines and Safety Notes for Thermal Shock Testers

A thermal shock tester subjects materials to rapid temperature changes to assess thermal shock resistance. It is used in research and quality control for ceramics, metals, and composite materials. Equ...

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Technical NoteJune 22, 2025

High-Temperature Flexural Testing: Method and Operating Notes

A high-temperature flexural testing machine measures the flexural strength of materials at elevated temperature. A specimen is loaded until fracture, and the load and bending response are used to calc...

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Technical NoteJune 12, 2025

Refractory Material Testing Machine: Methods and Essential Operating Points

A refractory-material testing machine combines heating, loading, measurement, and control for refractory-material development, production, and quality control. It simulates high-temperature conditions...

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Technical NoteJune 3, 2025

14th Shenzhen International Thermal-Conductive and Heat-Dissipation Materials and Equipment Exhibition, 2025

The 14th Shenzhen International Thermal-Conductive and Heat-Dissipation Materials and Equipment Exhibition will be held at the Shenzhen International Convention and Exhibition Center. Hunan Zhenhua An...

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Technical NoteMay 22, 2025

Applications of Thermal Conductivity Testers Across Industries

Thermal conductivity testers are used to measure the heat-transfer properties of materials in research and production. In materials development, testers are used with aerogels and rock wool at differe...

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Technical NoteMay 15, 2025

Specific Heat Capacity Analyzers: The Quantitative Lens on Thermal Properties

Specific heat capacity analyzers measure the thermal properties of materials for research and industrial production. They quantify specific heat capacity for material development and process control. ...

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Technical NoteApril 30, 2025

2025 International Labor Day Holiday Notice

The 2025 International Labor Day holiday will run from May 1 through May 5, for five days. May 6 will be a working day. During the holiday, employees are asked to plan activities and avoid crowded pla...

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Technical NoteApril 17, 2025

Thermal Conductivity Testers for Material Measurement

A thermal conductivity tester measures the thermal conductivity of materials. It is used with conductive metals, insulating ceramics and plastics, and other materials to assess insulation and heat-dis...

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Technical NoteApril 10, 2025

Maintenance and Calibration of a Laser Flash Analyzer

Routine maintenance of a laser thermal conductivity analyzer includes the following checks. Cleaning - Optical components: The laser window, lenses, and other optics are prone to dust and grease. Clea...

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