Vacuum Furnace Chamber for High-Temperature Testing

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Overview: Precision High-Temperature Testing Solutions

Specifically, SINOTEST vacuum furnace chamber systems deliver precision high-temperature material testing for demanding research and industrial environments. Engineers design these systems specifically for applications such as tensile, compression, bending, and creep-fatigue testing. Moreover, these systems support test temperatures up to 3000℃ under controlled vacuum conditions. In addition, our vacuum furnace chamber lineup includes radiant, induction, and electric heating configurations. Consequently, we can provide tailored solutions for metals, ceramics, composites, and advanced alloys.

Furthermore, every vacuum heating system complies with rigorous international standards — including ASTM E139 and ISO 204. This compliance ensures reliable, repeatable results in accredited laboratories. SINOTEST developed its first high-temperature vacuum creep testing machine in 1984. Since then, we have continued to advance environmental test chamber technology. Our applications range from nuclear fusion to spacecraft materials. As a result, research institutions and industrial quality control facilities widely adopt these vacuum furnace chamber solutions. They require unmatched thermal uniformity, contamination-free heating, and precise temperature regulation.

Key Features and Capabilities

High-Temperature Furnaces from SINOTEST are ideal for a wide variety of high-temperature tests. These include tension, compression, bend, and fatigue testing of metals, composites, ceramics, and many other materials. The furnaces feature a user-friendly design that helps operators perform setup tasks more quickly — without compromising test quality or accuracy.

A vacuum chamber is an industrial furnace that uses a vacuum system to discharge substances inside the chamber. Specifically, the system reduces the chamber pressure to below standard atmospheric pressure. It achieves this through components such as vacuum pumps, measuring devices, and valves. Operators can heat the chamber directly by electric resistance furnace wires (such as tungsten wires) or by high-frequency induction heating. The heating capacity reaches up to 3000℃.

Key application areas include: aviation, engines, turbines, nuclear industry, and special alloys. The system complies with multiple standards: ASTM E139, ISO 204, ISO20392, EN2002-005, ASTM E1457, ASTM E2714, ASTM E2760, ASTM D2290, ASTM D2291, ASTM D2294, GOST 1497, GOST 9651, and GOST 3248.

Heating System

SINOTEST offers three heating system options: radiant heating, induction heating, and electric heating. Each configuration suits different testing requirements and temperature ranges.

Temperature chamber up to +350℃

This chamber is suitable for test temperatures from -75℃ to +350℃.

3-Zone Vacuum Furnace Chamber up to 1200℃

This furnace is suitable for tensile, creep, and creep compression tests.

Vacuum Furnace Chamber up to 2000℃

This vacuum system is applicable for tests like tension, compression, and flexure.

Heating Method

Radiant Heating

Induction Heating

Electric Heating

Applications in Material Mechanics Testing

In material mechanics performance testing, the ultra-high temperature and special environment simulation test system (namely the high-temperature vacuum test device) serves primarily in national defense and military industry, aerospace, modern space technology, nuclear fusion reactor engineering, and new materials research departments.

New materials appear almost exclusively in high-tech fields. Therefore, the requirements for performance and lifespan are even more stringent. Unconventional material mechanical performance tests — such as tensile, compressive, bending, shear (interlaminar shear), peel, torsion, fatigue (low cycle/high cycle), creep endurance, impact, and hardness tests — are almost all required for new materials. Most of these tests require evaluation of material mechanical properties under high temperature and other environmental conditions. Additionally, new test methods are constantly being added, such as high-temperature fracture mechanics tests and variable temperature creep fatigue tests.

Development history of Vacuum Furnaces

Vacuum furnace technology has played a crucial role in human progress. As early as the Shang Dynasty (BC1600-BC1046), China developed a relatively complete copper smelting furnace. This early furnace achieved temperatures of 1200℃ with an inner diameter of 0.8 meters. Later, during the Warring States Period (BC770-BC210), Chinese craftsmen further mastered furnace temperature technology. Building upon copper melting furnaces, they successfully produced cast iron.

In 1794, John Wilkinson developed the straight cylindrical blast furnace (cupola) for melting cast iron. Subsequently, he applied for a patent in Britain.

In 1855, British engineer Karl William Siemens (1823-1883, originally from Germany) invented a high-temperature flame furnace. His design featured a heat storage chamber. Siemens obtained a patent for this innovation in 1856. He first used his furnace for melting glass.

In 1864, Frenchman Piere-Emile Martin adopted the principle of Siemens’ regenerative furnace. Using this approach, he built the first steelmaking open hearth furnace heated by gas fuel — now known as the Siemens-Martin furnace. Martin employed a heat storage chamber to preheat both air and gas at high temperatures. Through this method, he ensured temperatures exceeding 1600℃, which was essential for steelmaking.

Around 1900, the supply of electricity gradually became sufficient. Consequently, various resistance furnaces, electric arc furnaces, and core induction furnaces began to emerge. Vacuum furnaces first appeared around the 1930s.

The United States took an early lead in this field. In 1927, the country produced a vacuum annealing furnace specifically for electrical materials. In 1953, vacuum consumable electric arc furnaces entered industrial service for melting sponge titanium. Meanwhile, vacuum induction furnaces gained widespread industrial adoption around the 1950s. Continuing this progress, the United States developed an oil quenching vacuum furnace in 1960.

SINOTEST entered the field of high-temperature vacuum systems in 1969. The company successfully developed China’s first high-temperature vacuum tensile creep testing machine — the CJS-9 model — in 1984. This landmark machine achieved the highest temperature capacity in China at that time, reaching 1600℃. More recently, in 2017, SINOTEST produced a 900℃ vacuum three-point bending test device specifically for ceramic materials.