Description

These three-zone split furnaces are designed for ETM-D series universal testing machine and HTC series creep testing machine.

The elements of the split furnaces have been designed to achieve optimum performance and give the longest possible useful life. The heating elements are individually wound on MULLITE half tube sections, and provide three heat zones for excellent control of temperature gradients and reliable continuous operation up to the specified maximum temperature.

    High performance multi-crystal mullite refractory fabrics insulation is used to reduce heat losses and provide fast heat up rate. The specimen is heated primarily through radiation.

The exterior finish is stainless steel. Adjustable stainless steel latches keep the furnace sections locked together during tests and facilitate opening and closing of the furnace.

Ceramic closures at top and bottom fit closely around the loading bars and reduce heat loss at these points.

Each furnace has been designed for long life, good temperature uniformity and safe operation.

Mounting brackets for furnace

Furnaces need to be firmly attached to the test system during use but also readily moved to allow access to the specimen for setting-up.

A variety of mountings are used depending on the furnace type and design. Roller mounts are frequently used for slot-fronted furnaces.

Radiation reflector

This part is useful to protect grips from heat diffusion from the furnace.

Pull rod and tension grips

Various design of pull rods and grips are manufactured to satisfy different specimens.

Temperature monitoring for furnace

Specimen monitoring thermocouples are used to provide the most accurate indication of the specimen temperature. They are also used as the control input for a furnace or chamber during the specimen loaded portion of the test.
Standard thermocouple offerings are Type K.

The K type thermocouple is recommended for most general purpose applications. It offers a wide temperature range, low standard error, and has good corrosion resistance. K type is sometimes called Chromel-Alumel, which is the trade names of the Ni-Cr and Ni-Al wire alloys.

Ceramic coated rod is to prevent sensor from contacting furnace directly and guarantee the accuracy.

Temperature controller for furnace

Temperature Control systems are designed for controlling the heat output of furnaces. The control systems are offered for use with creep, stress-rupture, or hot tensile systems or they can be added to an existing frame using an existing furnace.

The control systems are compatible with all furnace systems offered as new equipment and can be configured to operate nearly any furnace with any one of several different thermocouple types.

Three zone control systems are designed for heat furnaces with three separate zones of heating elements, and typically three different thermocouples to control those zones.