Method and rotary hearth furnace for heat treating workpieces
A treatment area and furnace technology, applied in heat treatment equipment, heat treatment furnace, lighting and heating equipment, etc., can solve the problems of uncompact gas carburizing equipment and occupy a large space, and achieve shortened treatment time, convenient operation and low cost Effect
Inactive Publication Date: 2014-01-29
LOI THERMPROCESS
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Problems solved by technology
It can be seen that at least two furnaces for gas carburizing are required on the equipment, which will result in the construction and operation costs of the equipment, which is by no means optimal
Furthermore, known gas carburizing plants are not at all compact and require a lot of space due to the presence of at least two furnaces
Method used
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[0027] The rotary hearth furnace 1 is used for heat treatment of workpieces 2 , in particular for gas carburizing of metal workpieces 2 . Rotary hearth furnace 1 has figure 1 Not shown in the cover plate, the outer wall 3, the inner wall 4 and the rotary furnace bottom 5, the workpiece 2 is arranged on the rotary furnace bottom. The rotary hearth 5 defines a furnace 6 together with the inner and outer walls 4, 3 and the cover plate, wherein the rotary hearth 5 defines the hearth 6 from the bottom, and the outer wall 3 and the inner wall 4 define the hearth 6 circumferentially. The cover plate delimits the furnace 6 from the top.
[0028] according to figure 1 In the embodiment shown, the furnace 6 has a carburizing zone 7 for carbon-enriching the workpiece 2 under protective gas (endothermic gas) or a protective atmosphere, and a treatment zone 8 arranged behind the carburizing zone 7, wherein The carburizing zone 7 is one type of treatment zone. As an alternative, this on...
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A rotary hearth furnace (1) used for heat treating of a workpiece (2) comprises an outer wall and an inner wall (3, 4). The outer wall and the inner wall define a hearth (6). The hearth comprises at least one carbon penetration area (7) and at least a processing area (8) arranged behind the carbon penetration area. The invention aims to provide a solution characterized by providing an improved workpiece heat treating method and a device implementing the method on the basis of a simple design and a low cost. The at least one processing area (8) comprises at least an equal-temperature annealing area (11) arranged behind the at least one carbon penetration area (7). The equal-temperature annealing area is provided with at least one heating-cooling device (17a, 17b) keeping the maximum temperature of the equal-temperature annealing area (11) 720 DEG C. At least one inlet end gate area (18) is arranged between the at least one carbon penetration area (7) and the at least one equal-temperature annealing area (11). The inlet end gate area is formed by a pair of movable doors (12, 14) and can accommodate at least one workpiece (2).
Description
technical field [0001] The invention relates to a rotary hearth furnace of annular structure for the heat treatment of workpieces, in particular for the gas carburizing of metal workpieces, comprising an outer wall and an inner wall delimiting a hearth having at least A carburizing zone for carbon-enriching the workpiece under protective gas and at least one treatment zone arranged behind the at least one carburizing zone, wherein the outer wall is provided with at least one Closable opening for loading and / or unloading workpieces in the furnace. [0002] The invention also relates to a method for the heat treatment of workpieces in a rotary hearth furnace comprising a furnace with at least one carburizing zone and at least one carburizing zone arranged behind the at least one carburizing zone A treatment zone, wherein the workpiece is subjected to a carbon enrichment treatment under protective gas at a temperature exceeding 900° C. in the at least one carburizing zone. Bac...
Claims
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IPC IPC(8): C23F17/00C23C8/20C21D1/26
CPCC21D9/0062C21D9/0037F27B9/16
Inventor 萨利姆·菲利普·阿夫纳兹汉斯·乔治·比特纳斯文·格云瑟宝来·厄茲坎
Owner LOI THERMPROCESS