Services
Midland Elements Ltd have the manufacturing capability to produce all types of metallic heating elements for the use in all types of furnaces. Metallic heating elements are supported in a number of distinctly different ways depending upon the application, the temperature, and also the type of wall construction. There are generally five main types of element support systems, which are as follows:
Spiralled wire in grooves - Traditional
The metallic heating elements are supported in grooves, which are machined into the brickwork or insulation. This method is used at high temperatures (1250°c) to keep the structural integrity of the lining over a number of firings.
Spiralled wire on trays - Traditional
The metallic heating elements are supported with ceramic trays, which are in turn supported with refractory pillars. This method decreases firing time but looses some strength in the lining.
Freely radiating spiralled wire elements - High Performance
Here the metallic elements are supported by ceramic tubes, which are in turn supported by refractory pillars. This method allows the heating elements to radiate fully.
Freely radiating meander wire of strip elements - High Loading
The metallic elements are formed into what is generally known as "rod or strip over bend". With this system the heating elements are supported with specially designed refractory hangers, either in the roof, walls or floor. This enables the furnace designer to provide a very high watts loading within the furnace.
Embedded heating elements - High Loading and Modular Construction
Midland Elements have developed a special system of semi or partially embedded elements, which are embedded into ceramic materials. These materials have characteristics that take account of the change in the physical dimensions of the element as the temperature of both the element and furnace rises. Such heating elements are commonly used in aluminium melting / holding furnaces where the fully embedded system gives protection from aluminium splash. Our modular form also enables the user to efficiently exchange any failed elements.
