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SECO\/WARWICK roller hearth furnaces<\/strong> are designed to meet your heat treating requirements accurately and economically.\u00a0 There’s a wide range of sizes and types of electric or fuel fired heating systems with matched cooling sections and system components such as charge and discharge tables, quench systems, protective atmosphere systems, cooling equipment and\u00a0loaders.<\/p>\n Looking for equipment? \u00a0Contact our global Atmosphere Furnace Team<\/p>\n About Roller Hearth Furnace Systems\u00a0<\/strong><\/p>\n Application Versatility<\/strong><\/p>\n SECO\/WARWICK process specialists to select the right combination for your production by configuring the furnace system with a variety of heating and cooling chamber designs, custom engineered to suit your process.<\/p>\n Continuous, Unlimited Work Flow\u00a0<\/strong><\/p>\n The SECO\/WARWICK roller hearth conveyor system consists of a series of externally driven rolls.\u00a0 There are no cumulative conveyor pressures or tensions as in belt, chain or pusher furnaces.\u00a0 As a result, there are no production or cycle limitations and the length of the furnace is dependent only upon your application needs.\u00a0 Individual operation of the roll sections permits continuous or interrupted workflow.<\/p>\n Fast, Top QualityProduction<\/strong><\/p>\n The advanced construction design features of these furnaces let you increase both the quality and rate of your production.\u00a0 Individually driven roll sections for fast run-in and run-out, heavy duty insulation systems, welded gas tight casings, temperature-designed doors-all assure fast, accurate, uniform heating and cooling, minimizing atmosphere mixing, heat loss and work distortion or stress.<\/p>\n Ease of Installation<\/strong><\/p>\n Furnace sections are completely assembled at the factory with insulation, heating systems, piping, wiring and rolls.\u00a0 The skid mounted sections can be moved quickly and easily into place, welded or bolted together and placed in operation.\u00a0 Assembly by highly skilled factory staff using the right tools, jigs and fixtures assures greater attention to workmanship and design details, eliminating many of the problems frequently encountered with field construction.<\/p>\n Approach to extend component life<\/strong><\/p>\n Because individual conveyor rolls are externally driven and remain in the same temperature zones, they are not subject to thermal cycling and can be designed for maximum operation life at working temperatures.\u00a0 In addition, cumulative pressures on conveyor rolls, work trays and work loads are eliminated.\u00a0 Furnace doors are specially constructed and insulated for operation within the temperature zones in which they are located, minimizing stress and warpage caused by temperature differences.\u00a0 Heating and cooling sections incorporate dependable, high quality components for long life operation.\u00a0Factory assembly of furnace section eliminates many problems often encountered with field construction.<\/p>\n Flexible Operation<\/strong><\/p>\n Individual roll sections can be started, stopped, reversed or oscillated; they can be run at the same or at different speeds.\u00a0 This permits an operating furnace that produces your required cycle in a minimum amount of space.\u00a0 High speed transfer between sections allows closely spaced work loads or work trays, with separation during transfer through doors, assures optimum use of hearth space and minimizes atmosphere mixing.\u00a0 All door openings can be adjusted to work load heights, permitting faster operation and minimizing atmosphere mixing.<\/p>\n Lower Product Costs<\/strong><\/p>\n The wide selection of furnace combinations and sizes means that you can get the furnace designed for your needs.\u00a0 You can cut costs through increase product quality and rate of production.\u00a0 Factory assembly means lower cost installation and your furnace is in production more quickly.\u00a0 In addition, the best construction materials and design mean minimum maintenance.<\/p>\n Heat Treating Processes<\/strong><\/em><\/p>\n Cycle Annealing<\/strong><\/p>\n Cycle annealing produces a tough, uniform structure in steel.\u00a0 Typical applications include improving the machinability of screw machine stock, improving cold working properties of deep drawing stock, and improving impact resistance & fatigue properties of gears or machine parts.\u00a0 In the furnace the steel is heated to slightly above hardening temperature (approx. 1700\u00b0F\/925\u00b0C), cooled quickly to the temperature at which transformation should take place (approx. 1200\u00b0F\/650\u00b0C), held at this temperature until transformation has taken place and then cooled.\u00a0 This furnace may be heated by gas fired radiant tubes or by electric ribbon resistors, and normally has a controlled atmosphere to prevent scaling and surface decarburization.\u00a0 Maximum furnace temperature:\u00a0 1750\u00b0F\/950\u00b0C.<\/p>\n