Abstract: A method of low pressure carburizing (LPC) of elements made of iron alloys and of other metals in a device for continuous, in-line thermochemical surface treatment, with a constant time-step, with saturation at a temperature from 820° C. to 1200° C. in gaseous atmosphere, wherein into the vacuum chamber of the device a gaseous carbon carrier is introduced using impulses in a constant flow-time sequence, synchronized with the working time-step of the device.

Abstract: A method of low pressure carburizing (LPC) of elements made of iron alloys and of other metals in a device for continuous, in-line thermochemical surface treatment, with a constant time-step, with saturation at a temperature from 820° C. to 1200° C. in gaseous atmosphere, wherein into the vacuum chamber of the device a gaseous carbon carrier is introduced using impulses in a constant flow-time sequence, synchronized with the working time-step of the device.

Abstract: Device for individual quenching of gears, pinions, bearing rings and other similar components of technical devices, operating in a vacuum furnace installation, whereby the quenching chamber of the installation is fitted with tightly-sealed doors for workpiece loading and unloading. The following elements are fitted inside the quenching chamber: removable table on which an individual workpiece is placed, along with a surrounding set of removable nozzles; the inlet of the quenching chamber features an attached tank supplying the cooling medium to the nozzles—preferably air or nitrogen, or argon or helium, or hydrogen or carbon dioxide, or mixtures thereof—while the outlet of the quenching chamber is connected to the inlet of a tank receiving expanded cooling medium from the chamber; moreover, there is a compressor connected in between the two tanks, ensuring closed-loop flow of the cooling medium.

Abstract: Multi-chamber furnace for vacuum carburizing and quenching of gears, shafts, rings and similar components has at least two process chambers connected in parallel, with a continuous feeding mechanism for individual workpieces. Those chambers—the first one being a heating chamber, the second being a carburizing chamber and the third one diffusion chamber—are configured in a vertical arrangement, placed in a shared vacuum space with gas-tight division, whereas at the ends of each chamber there are incorporated heating chambers with thermal insulation, with a graphite heating system and stepping feeding mechanism incorporated in the core for the purpose of continuous feeding of individual workpieces.

Abstract: Multi-chamber furnace for vacuum carburizing and quenching of gears, shafts, rings and similar components has at least two process chambers connected in parallel, with a continuous feeding mechanism for individual workpieces. Those chambers—the first one being a heating chamber, the second being a carburizing chamber and the third one diffusion chamber—are configured in a vertical arrangement, placed in a shared vacuum space with gas-tight division, whereas at the ends of each chamber there are incorporated heating chambers with thermal insulation, with a graphite heating system and stepping feeding mechanism incorporated in the core for the purpose of continuous feeding of individual workpieces.

Abstract: A method to generate a ternary carburizing gas mixture, using a reaction of selective hydrogenation of acetylene in a stream of hydrocarbons to the form of ethylene, comprising the following steps: heating of the inside of the reactor with an inert gas to an operating temperature for a period of 20 minutes at a temperature of 300° K, passing a mixture of hydrogen and acetylene by the regiospecific catalyst, and moving out the reaction products on the outside after passing the mixture through the regiospecific catalyst, but generation is effected in a continuous mode in the operating temperature range of the regiospecific catalyst between 293° K and 398° K, preferably at a temperature of 350° K.

Abstract: Device for individual quenching of gears, pinions, bearing rings and other similar components of technical devices, operating in a vacuum furnace installation, whereby the quenching chamber of the installation is fitted with tightly-sealed doors for workpiece loading and unloading. The following elements are fitted inside the quenching chamber: removable table on which an individual workpiece is placed, along with a surrounding set of removable nozzles; the inlet of the quenching chamber features an attached tank supplying the cooling medium to the nozzles—preferably air or nitrogen, or argon or helium, or hydrogen or carbon dioxide, or mixtures thereof—while the outlet of the quenching chamber is connected to the inlet of a tank receiving expanded cooling medium from the chamber; moreover, there is a compressor connected in between the two tanks, ensuring closed-loop flow of the cooling medium.

Abstract: A retort furnace for heat and/or thermochemical treatment designed for technological process in protective gas atmosphere, process gas atmosphere or in vacuum, and used inter alia for annealing pipes made of austenitic alloys, having among other things: a cylindrical outer body with a lid equipped with an active thermal barrier, a cylindrical retort, thermal insulation, a heating system located in the thermal insulation, a cooling system of the furnace. The active thermal barrier constitutes the radiation screens, in the form of at least two metal boards, installed on brackets located at the lid inside the retort. Additionally, radiation caulking rings are located in the extreme areas of the brackets and, circumferential sealing rings are permanently fixed in the casing of the retort.

Abstract: A method to generate a ternary carburizing gas mixture, using a reaction of selective hydrogenation of acetylene in a stream of hydrocarbons to the form of ethylene, comprising the following steps: heating of the inside of the reactor with an inert gas to an operating temperature for a period of 20 minutes at a temperature of 300° K, passing a mixture of hydrogen and acetylene by the regiospecific catalyst, and moving out the reaction products on the outside after passing the mixture through the regiospecific catalyst, but generation is effected in a continuous mode in the operating temperature range of the regiospecific catalyst between 293° K and 398° K, preferably at a temperature of 350° K.

Abstract: A retort furnace designed for heat and heat and chemical treatment in protective gas atmosphere, process gas atmosphere or in vacuum, equipped with a retort with a lid, made of steel or heat-resisting or creep-resisting alloys, separating the process atmosphere from the ambient atmosphere, with heating elements and thermal insulation outside the retort and with a cooling system. The radiation screens, in the form of at least two metal boards, are installed at supports located at the lid inside the retort; the heating elements are located behind the radiation screens, on the retort side and are separated with the metal screen. A few radiation sealing rings are placed in the extreme area of the brackets. The radiation screens and sealing rings, as well as the circumferential sealing rings permanently fixed in the casing of retort make up the system of reducing heat losses through radiation at the wall of the retort.

Abstract: The purpose of the present invention is to create a temperature control system applied in heating and cooling phases of thermal processing. The invented temperature control system consists of a single frequency converter F to whose output, through contactors, are simultaneously connected: at least one heating system and at least one cooling system. The heating system incorporating resistance heating elements R is actuated by the heating system contactor SG. The cooling system incorporating gas blower, 3-phases induction motor MD is actuated by the blower motor contactor SD. The heating and cooling system contactors (SG and SD) are connected to the output of the frequency converter F and are controlled by the temperature controller RT.

Abstract: The purpose of the present invention is to create a temperature control system applied in heating and cooling phases of thermal processing. The invented temperature control system consists of a single frequency converter F to whose output, through contactors, are simultaneously connected: at least one heating system and at least one cooling system. The heating system incorporating resistance heating elements R is actuated by the heating system contactor SG. The cooling system incorporating gas blower, 3-phases induction motor MD is actuated by the blower motor contactor SD. The heating and cooling system contactors (SG and SD) are connected to the output of the frequency converter F and are controlled by the temperature controller RT.