46results about "Muffle furnaces" patented technology

To provide a production method of a sintered body that can obtain a sintered body satisfying light transmissivity required as a dental prosthetic material by short time sintering without essentially requiring precise temperature control at a high temperature region and without depending on a content of a stabilization element of a zirconia composition.SOLUTION: A production method of a zirconia sintered body containing a stabilization element comprises: a first temperature rising step for rising temperature of a zirconia composition containing the stabilization element from a temperature rising start temperature up to a first arrival temperature between 800°C or higher and lower than 1400°C with a rate of temperature increase of 150°C / minute or more; a second temperature rising step for rising the temperature from the first arrival temperature up to a second arrival temperature between 1400°C or higher and lower than 1580°C with a rate of temperature increase of over 30°C / minute and less than 200°C / minute; and a holding step for holding the temperature at the second arrival temperature.SELECTED DRAWING: None

The utility model discloses a muffle furnace combined structure, and particularly relates to the technical field of muffle furnaces, the muffle furnace combined structure comprises a muffle furnace, a sealing box door is arranged on the outer end face of the muffle furnace, a heating cavity is arranged on the inner side of the sealing box door of the muffle furnace, and a first supporting plate and a second supporting plate are sequentially arranged in the heating cavity; supporting blocks are arranged in the middles of the two sides of the inner end of the heating cavity, supporting grooves are formed in the end faces of the supporting blocks, and supporting blocks are arranged on the outer end faces of the first supporting plates. During actual use, the first supporting plate and the second supporting plate can conveniently move in the heating cavity under the corresponding arrangement state of the supporting grooves, the bottom supporting blocks, the limiting supporting sliding grooves and the limiting supporting blocks, so that the first supporting plate and the second supporting plate can be conveniently mounted and dismounted according to the size of a crucible; and therefore, the crucible with a small size can be conveniently taken and stored, and the convenience of taking and operating the crucible by a worker is improved.

The utility model relates to dental medical instrument technical field discloses a kind of zirconia denture crystallization furnaces, including base and crystallization furnace main body, the inside of the base is provided with feeding mechanism, the inside of the crystallization furnace main body is provided with gas control mechanism;The feeding mechanism includes motor one, the inside of the base is fixedly connected in the outside of motor one, the driving end of motor one is fixedly connected with disc, the left end of the disc is fixedly connected spiral protrusion, the inside of the base is fixedly connected with cylinder, the inner wall of the cylinder is slidably connected with sliding column, the right end of the sliding column is fixedly connected with rack plate.In the utility model, annular plate on placing tray can prevent zirconia denture from sliding or falling during transportation, after reaching specified position, sealing ring and heat insulation pad are in close contact, ensure the sealing property of heating chamber, reduce scald risk, improve work efficiency while automatic operation, reduce labor intensity.

Telescoping rams, such as more particularly two-stage telescoping rams, are disclosed, having a primary ram and a secondary ram, with the secondary ram being at least partly disposed within the primary ram. The primary ram and secondary ram are configured for displacement, responsive to pressure applied in a primary pressure shell, and the secondary ram is configured for independent displacement with respect to the primary ram, responsive to pressure applied in a secondary pressure shell. Apparatuses comprising such telescoping rams are disclosed, as well as methods using such telescoping rams and associated apparatuses, for the transfer of solid particles.

OBJECT To provide a metal heating furnace that burns ammonia while decreasing nitrogen oxides efficiently and a method of burning ammonia in the metal heating furnace. MEANS OF REALIZING THE OBJECT A metal heating furnace 10 includes a burner nozzle 31, plural injection nozzles 41, 42, 43 for ammonia, and a controlling unit 100. The burner nozzle 31 is provided on a furnace wall 11 and emits flame F, which is used to burn ammonia. The injection nozzles 41, 42, 43 for ammonia are provided on a ceiling wall 13 at intervals in a direction in which the flame F extends, and are used to eject ammonia in a direction perpendicular to the flame F. The controlling unit 100 optimizes an amount of ammonia ejected from each of the injection nozzles 41, 42, 43 for ammonia.

The utility model belongs to high temperature material processing equipment technical field, and a kind of ceramic crucible stacking feed arrangement based on gravity release mechanism is especially provided, device includes bottom pullout tray;Bilateral symmetrical arrangement of fence assembly, the fence assembly inboard wall is equipped with continuous sliding slot, and sliding slot height is greater than pullout tray thickness, to form stable guide in the tray sliding process;Operating side baffle, connect two sides fence assembly, prevent crucible from sliding outside;Furnace mouth side detachable rigid connecting piece, two ends are fixed on two sides fence upper end by latch or thread;The pullout tray is formed sliding fit with fence assembly by sliding slot, and crucible is separated from tray under the action of gravity and falls into hearth when pulling out.The utility model has the advantages that: device structure is simple, through external stacking preloading and gravity release mechanism, the efficient stacking batch feeding of ceramic crucible is realized, both improve work efficiency, and reduce crucible breakage risk.

An optical fiber draw furnace muffle includes a body portion defining a substantially cylindrical cavity extending along a centerline axis of the muffle. A tapered portion has an interior surface which defines a first curved portion with a first radius of curvature and a second curved portion with a second radius of curvature. At least one of the first and second radii of curvature has a radius greater than a radius of the cylindrical cavity.

This utility model provides a muffle furnace exhaust gas emission support assembly and a muffle furnace, relating to the field of heating equipment technology. The muffle furnace exhaust gas emission support assembly includes a support member and a connector. The support member is fixedly connected to the outer surface of the muffle furnace. The connector is fixedly connected to the exhaust gas emission channel of the muffle furnace, and the connector is slidably connected to the support member. The connector can slide relative to the support member along the axial direction of the muffle furnace. When the exhaust gas emission channel of the muffle furnace extends or shortens along the axial direction of the muffle furnace, the connector moves synchronously along the axial direction of the muffle furnace, and the connector can slide relative to the support member along the axial direction of the muffle furnace. This allows the position of the connector to be adjusted according to the length of the exhaust gas emission channel extending out of the muffle furnace, preventing the parts of the exhaust gas emission channel from twisting and preventing breakage and leakage after prolonged use.

The utility model relates to the field of coated silicon material preparation, concretely relates to a coated silicon material preparation vacuum furnace convenient to clean, including bearing platform, vacuum pump is installed in bearing platform upper side, the utility model discloses through the inside vacuum furnace shell moves along the outside vacuum furnace shell, can make the inside vacuum furnace shell and outside vacuum furnace shell open and shut, realize the manual cleaning of its inside conveniently, and in the moving process, the scraper ring one and the scraper ring two can utilize the power of movement, the inside wall of both is scraped to the residue, thereby guaranteeing the cleanness of both interiors, and the setting of sealing ring and sealing groove can effectively guarantee the air tightness of both, through this kind of mode can effectively guarantee the sealing property of vacuum furnace, and utilize the power when opening, clean the inside wall of both, thereby avoiding the residue of residue, and the vacuum furnace inside after starting is completely open, thereby facilitating the subsequent manual fine cleaning, thereby improving the subsequent coated silicon material preparation quality.

The application discloses an intelligent modular three-dimensional heating high-efficiency energy-saving muffle furnace system, and belongs to the technical field of high-temperature heat treatment equipment. The system core comprises a furnace body module, a heating module, a heat preservation module, a heat recovery module, a control module, a sensing detection module, a power execution module, a communication interaction module, a man-machine display module and a safety alarm module, and can extend function modules such as atmosphere control and rapid cooling according to needs. The furnace body module adopts modular reconfigurable standardized design, the heating module adopts a six-face full-coverage three-dimensional heating matrix, the heat preservation module is a three-layer gradient composite heat preservation structure, the heat recovery module is configured with a two-stage self-circulation heat recovery system, and the control module integrates an AI intelligent temperature control and self-adaptive power regulation system. The application has the characteristics of modular flexible expansion, full-scene adaptation, intelligent management and control and high safety protection, and can be widely applied to various heat treatment scenes of scientific research experiments and industrial production.

The present application relates to the field of vacuum furnace body knotting manufacturing, in particular to a vacuum smelting furnace body device and a knotting method thereof. The device comprises a plurality of copper wire groups, which are laid between a tire membrane (2) and an asbestos cloth (4) and close to the inner side of the asbestos cloth (4) at intervals. The copper wire group comprises a plurality of first copper wires and a plurality of second copper wires (6), and the second copper wires (6) are arranged in a staggered and buckled manner with the first copper wires (7) embedded in the lower layer. The use of the method of the present application overcomes the defects of low bonding strength and easy crack formation at the connecting parts between the main induction zone and the furnace ring, and between the furnace ring and the furnace nozzle of the existing furnace body, enhances the connection integrity and firmness between the main induction zone and the furnace ring, and between the furnace ring and the furnace nozzle, reduces the occurrence of large transverse and longitudinal crack defects, improves the service life and production efficiency of the vacuum furnace body, reduces the knotting frequency of the furnace body under the same production condition, and reduces the labor intensity of personnel.

This utility model relates to the field of heating equipment technology, and provides a muffle furnace, including: a furnace body and a furnace door. A heating chamber is provided inside the furnace body, and the furnace door is installed on the furnace body to close or open the heating chamber. A shelf mechanism includes a shelf, a sliding assembly, and a driving assembly. The shelf is slidably installed in the heating chamber via the sliding assembly, and the driving assembly is drively connected to the shelf. Under the drive of the driving assembly, the shelf moves horizontally relative to the heating chamber. Driven by the driving assembly, the shelf can automatically remove samples from the heating chamber, allowing experimenters to retrieve samples without putting their hands into the high-temperature environment, effectively reducing the risk of burns. After the shelf is removed, it provides a spacious working area, preventing samples from slipping and breaking during sampling, further improving operational safety and convenience.

The present application discloses a furnace atmosphere control device and method. The furnace atmosphere control device comprises an adjustment device, a sensor system, and a control unit. The exhaust unit in the adjustment device is configured with a cover plate, a connecting rod, a crank, and an actuator, wherein the connecting rod is used to push and pull the cover plate to move, changing the position of the cover plate, thereby changing the area of the outlet of the exhaust unit. The furnace atmosphere control device of the present application enables the sintering atmosphere within the calcination furnace to be maintained at a high oxygen concentration, and can maintain continuous fluctuations in furnace pressure, ensuring the calcination effect of the raw cathode materials. The furnace atmosphere control method of the present application achieves automatic and real-time adjustment, being safe and efficient.

The present disclosure provides an ultrafast high-temperature sintering device comprising an environmental chamber with walls defining an internal volume, a sealable opening for access, and ports coupled to the internal volume. The device includes a heater portion configured to sandwich a target sample between two resistive heating coil elements, with alloy shields on either side to reduce radiation heat loss. The environmental chamber enables controlled ambient gas environments from oxidizing to inert to vacuum conditions. The heating elements comprise Fe-Al-Cr alloy coils in substantially planar snaking patterns, providing oxidation resistance at high temperatures. The device enables densification of ceramic materials including AI2O3, ZrO2, TiO2. LiZr2(PO4)3, and Li7La3Zr2O12 within minutes while maintaining precise environmental control.

A substrate heat treatment apparatus includes a heat treatment chamber having a heat treatment space, a gas injection unit located inside the heat treatment chamber and having a gas outlet configured to inject a gas into the heat treatment chamber, and a heat dissipation guide positioned inside the heat treatment chamber adjacent to the gas injection unit and extending along a first horizontal direction intersecting with a discharge direction of the gas discharged through the gas outlet, wherein an inner surface of the heat dissipation guide facing the gas outlet includes a recessed surface recessed formed along a second horizontal direction intersecting with the first horizontal direction.

Methods and apparatus for fabricating separators for solid-state lithium metal batteries employ rapid thermal processing. Aspects include high temperature sintering. Temperatures, durations of heat application, and proximity of heating elements to materials undergoing sintering combine to provide separators with desirable physical characteristics, including porosity, in a batch process.

The present invention is a method for treating a metallic member using a treatment furnace, the method comprising a step for introducing an activation atmosphere gas into the treatment furnace, a step for heating the activation atmosphere gas in the treatment furnace to a first temperature, a step for introducing a nitriding atmosphere gas or a soft nitriding atmosphere gas into the treatment furnace, and a step for heating the nitriding atmosphere gas or the soft nitriding atmosphere gas in the treatment furnace to a second temperature. The activation atmosphere gas can be introduced into the treatment furnace through an activation atmosphere gas introduction pipe. An organic solvent in a liquid form is introduced into the activation atmosphere gas introduction pipe, which is in a state where the introduction of the activation atmosphere gas has been continued, several times intermittently.

This utility model relates to the field of vacuum furnace technology, specifically to a vacuum furnace, including a furnace body, a furnace door, a motor, a sealing flange, and an aviation plug. The furnace body has a furnace door on one side, and a chamber is formed inside the furnace body, where the motor is located. The furnace door is fitted with a sealing flange, which has a mounting hole. The aviation plug includes a fixed section and a first plug-in section. The fixed section is fixed in the mounting hole, and one end of the first plug-in section is connected to the motor wire of the motor, while the other end is detachably plugged into the end of the fixed section facing the chamber. During use, when the motor needs maintenance, the vacuum furnace provided by this utility model only requires opening the furnace door and unplugging the corresponding first plug-in section from the fixed end to remove the motor from the furnace body for maintenance, which is very convenient. Since the fixed section is always fixedly installed on the sealing flange, there is no need to consider the sealing problem caused by disassembly.

The invention relates to a method for heating a steel semi-product that comprises the following steps: - putting a steel semi-product to be heated inside a furnace, - introducing an entry gas flow into a device for heating gas, being connected to said furnace and comprising: o a pipe allowing gas to flow inside of it, o an insert located inside said pipe, being electrically conductive, o an inductor located in the vicinity of said pipe, - feeding energy into said insert using said inductor of said device for heating gas so that said energy fed into the insert is transferred to the gas introduced into said device for heating gas, to heat said gas to a temperature from 450°C to 1500°C, - releasing said heated gas into the furnace so that said steel semi-product is heated, - removing the heated steel semi-product from the furnace.

The utility model discloses a carbon black muffle furnace with safety protection function, including muffle furnace body, the inside of muffle furnace body is provided with heating cavity, the lateral wall of heating cavity is provided with the chute, the inner wall sliding connection of chute has the movable block, one end fixed connection of movable block has the placing plate, and another end of movable block installs the mobile mechanism with placing plate cooperation. In the utility model, through setting the placing plate, chute and mobile mechanism, through the rotation handle, the movement of connecting block can be driven through screw rod, drives the unfolding or folding of scissor fork frame to move placing plate and movable block along the chute, can move out the inside of muffle furnace body outward, convenient to use, save time and effort, also can avoid the operator from inside and take the material, and the scalding accident occurs, and the operation is more safe, simultaneously, when along with the chute and move the crucible that is equipped with carbon black, can keep stable, guaranteeed the stability when the crucible moved out.

To efficiently deposit a triiron tetroxide film using gas without using water vapor.SOLUTION: A metal oxide film deposition method comprises: an arrangement step of arranging a metal workpiece in a heat treatment furnace; a substitution step of substituting air in the heat treatment furnace with inert gas or carbon dioxide; a heating step of heating the inside of the heat treatment furnace after the substitution step; and a film deposition step of depositing a triiron tetroxide film on the workpiece by changing the inside of the heat treatment furnace after the heating step into a carbon dioxide atmosphere.SELECTED DRAWING: Figure 2

A sintering furnace (1) for sintering dental workpieces (2), wherein the sintering furnace (1) has a heating element (3) with a receiving space (4) for receiving the workpiece (2) during sintering. The receiving space (4) is a portion of an interior space (5) within the heating element (3), and the heating element (3) comprises or consists of silicon carbide, wherein the heating element (3) is designed, at least in parts, as a slotted tube, and the slot (6) in the tube forming the heating element (3) has a helical configuration in a heating region (7), in which the heating element (3) encloses the receiving space (4).

A vacuum carburizing treatment method, includes: supplying an inert gas into a heating chamber in which a carburizing treatment is performed on a workpiece, making the pressure in the heating chamber become a pressure equal to or higher than an atmospheric pressure, and then opening a charging port for the workpiece provided at a bottom portion of the heating chamber; charging the workpiece from the charging port; increasing the temperature inside the heating chamber to a temperature at which a vacuum carburizing treatment is performed; and supplying a carburizing gas into the heating chamber that has been vacuum-evacuated and performing a vacuum carburizing treatment on the workpiece.

This utility model belongs to the field of battery material preparation technology and discloses a sintering apparatus. The apparatus includes a sintering container, a heating component, and a cooling component. The sintering container has an openable and closable cavity for filling the material to be sintered. The heating component includes a heating element that can be connected to the outer wall of the sintering container. The cooling component includes a cooling element that can be connected to the outer wall of the sintering container. This sintering apparatus allows the heating element to first heat the sintering container, enabling the material to undergo a sintering reaction within a suitable temperature range. Subsequently, the cooling element directly cools the sintered material, rapidly quenching it after the sintering reaction. The transition from sintering to quenching is highly continuous and fast, effectively improving product preparation efficiency. Furthermore, the sintering apparatus can be scaled down or up as needed to better suit different sintering volumes.

The utility model relates to the field of muffle furnace discloses a kind of muffle furnace of quick heating and heat dissipation, including base, the base top is fixedly connected with furnace body, the furnace body one side is provided with sealing assembly, the furnace body is internally provided with heating assembly, the base and furnace body inside are provided with heat dissipation component, the furnace body inside is fixedly connected with reflux pipe, the furnace body inside is fixedly connected with inflow pipe, the inflow pipe outer wall is provided with fixed component, the inflow pipe inside is slidably connected with transport pipe, the transport pipe outer wall is provided with fixed groove, the fixed component includes sliding sleeve, fixed ring and spring. In the utility model, sliding sleeve is first pushed to unlock ball, to unlock transport pipe, then transport pipe is extracted, to reach the effect that transport pipe can be easily disassembled, avoid the problem that transport pipe can be disassembled to clean the inside of cooling pipe only by complex operation, to improve the high efficiency of the muffle furnace of quick heating and heat dissipation.

Modular Thermochemical Surface Treatment Plant This description relates to a thermochemical treatment plant (10) comprising several treatment cells (30, 40) and a common sealed enclosure (16) equipped with handling means (22, 26) for transferring a load (28) from one treatment cell to another, wherein one of the treatment cells is a nitriding cell (30) comprising a nitriding enclosure, intended to receive the load (28), the common sealed enclosure (16) being mobile or permanently connected to the treatment cells (30, 40). Figure for the abstract: Fig. 1

This utility model discloses a vacuum sintering furnace, relating to the field of sintering furnace technology. The sintering furnace includes a furnace body and a furnace door. The furnace body includes a vacuum container shell. Inside the vacuum container shell, from the center outwards, are arranged a molybdenum box, a graphite cylinder, and a heating element. It also includes an inlet pipe and an outlet pipe. The inlet pipe passes through the vacuum container shell and communicates with the molybdenum box, while the outlet pipe passes through the vacuum container shell and communicates with the graphite cylinder. The furnace door is hinged to the vacuum container shell via a door hinge frame. An automatic locking mechanism is also provided between the furnace door and the vacuum container shell. The automatic locking mechanism includes a door opening / closing cylinder for driving the door hinge frame to open and close, and a door rotating cylinder for driving the furnace door to rotate. Several locking pull blocks are arranged around the furnace opening of the vacuum container shell. Locking guide wheels, corresponding to the locking pull blocks, are arranged around the side of the furnace door facing the furnace opening. Locking pull blocks are provided with locking grooves for the locking guide wheels to insert into and lock the furnace door.