Annealing Furnace

Annealing is a heat treatment that softens metals to allow for their cold working to improve their mechanical, electrical, and other physical properties. Annealing furnaces relieve the internal stress of materials by heating them to their recrystallization temperature to make them ductile for further machining. After a workpiece undergoes annealing, it is rolled, drawn, forged, extruded, headed, or welded—these are processes that cause internal stress. 

Ashing Furnace

Ashing is a process of quantifying the change in the weight of a sample as various components of the sample are burned away. It is a process of expelling organic material before it is analyzed. The method of ashing involves the complete combustion of the material being tested. Due to the complexity of the ashing process, ashing furnaces are designed specifically for the product(s) to be tested.The typical ashing furnace has a heating element in an enclosure with a scale attached to weigh the sample before, during, and after it is burnt. An ashing furnace is relatively small with a chamber, heating element, heath plate, and chamber threshold, all of which can be easily replaced.Ashing furnaces are used in the food industry to estimate the mineral content of food. Samples are heated to 600° C (1112° F). The dry weight of the ash provides data on the mineral concentration of the sample. The petroleum industry uses ashing furnaces to test the combustibility of their products and crude.

Quenching Furnace

Quenching is a process of rapidly cooling a workpiece from a high temperature, and it is used to form martensite in steel. The cooling material can be water or oil. Quenching furnaces are normally paired with a batch furnace, roller hearths, or pusher furnaces. Different quenching furnaces are designed to meet the specific needs of a given application. A necessity for quenching furnaces is precision control of the temperature to avoid uneven heating and overheating.

Sintering Furnace

Sintering is a heat treatment process designed to transform loose fragmented material into a solid mass. The amount of heat provided during sintering varies in accordance with the type of material but is always slightly below the material‘s melting point. During sintering, the porous spaces in a workpiece are minimized as the material is squeezed and shaped at high temperatures and pressures. The purpose is to heighten the material‘s properties, such as thermal and electrical conductivity, strength, and translucency.

Tempering Furnace

A tempering furnace is designed to heat treat metal products to increase their durability and hardness. Increasing the toughness of a metal product enhances the product's ability to withstand deformation and energy absorption before it cracks. Heat of a tempering furnace brings out the beneficial properties of a metal and improves its mechanical characteristics.

Tempering furnaces have ceramic heating elements that are lined with electrical coils to provide uniform heating of the chamber. There are different heating ranges depending on the material to be processed. Tempering takes place at temperatures between 300° C and 750° C (542° F and 1382° F).