TWM599895U - Structural improvement of multifunctional airtight sintering furnace - Google Patents

Abstract

This creation provides a structure improvement of a multifunctional airtight sintering furnace. The sintering furnace has an inner space and a door that can be opened and closed. The inner space of the furnace can be filled with fired objects, and the outside is covered with insulation materials. And a heating element is installed in the furnace space close to the furnace wall, especially: the furnace body is also equipped with: intake pipe, exhaust pipe, cooling pipe and exhaust pipe at the same time to facilitate the energy of different external gas According to the demand, it is injected into the furnace space through the air inlet pipe and then the firing reaction is carried out. After the final firing, the gas is discharged out of the sintering furnace through the exhaust pipe to facilitate the repeated or successive injection and discharge of the same or different external gases. . In this way, the sintering furnace can integrate several different furnace body functions to meet the firing requirements of various fired objects, ensure that the life of the heating element is prolonged, and can improve product quality, achieve shortening of working hours, lower costs, and increase mass production And other substantial benefits.

Description

Structure improvement of multifunctional airtight sintering furnace

This creation is to provide a multi-functional airtight sintering furnace structure improvement, especially a kind of freely replaceable injected gas, in order to improve the diversified use of airtight sintering furnace needs.

According to the product, in the production process, it is often necessary to perform a heat treatment process according to the characteristics or requirements of the material used, so that the material can produce different material properties or improve the original physical properties after the heat treatment. The above heat treatment process is generally achieved by using various airtight sintering furnaces with different functional requirements. The sintering furnaces generally include dry hydrogen furnaces, wet hydrogen furnaces, old furnaces, nitrogen furnaces, fast furnaces, etc. by function. In practice, an appropriate external gas is introduced into each sintering furnace to prevent oxidation of the sintered product, control the carbon potential, remove impurities in the furnace, and purify the furnace gas.

However, the conventional sintering furnace is restricted by the structural design. The gas introduced during the sintering process can only be used in the designated furnace body. If a fired product needs to be subjected to different heat treatments during the firing process, under the precondition that the gas cannot be replaced , It is necessary to move the sintered product to another sintering furnace with the required processing function to continue sintering with another gas. This is not only troublesome and inconvenient, but also time-consuming and labor-intensive. For manufacturers, it is impossible Increasing the number of processing will also lead to a substantial increase in costs.

In view of the above-mentioned lack of knowledge, the creator of this case has developed and designed airtight The professional experience of the sintering furnace, hoping to create this one can improve the lack of use of the existing airtight sintering furnace, make its overall function and efficiency more perfect and practical, and in line with economic benefits. After continuous experimentation and trial production, finally Developed this practical creation.

The first purpose of this creation is to provide a multifunctional airtight sintering furnace structure improvement, by injecting different gases to increase the maximum sintering temperature in the sintering furnace, so as to achieve a design that integrates several different furnace functions and can meet a variety of The firing requirements of different fired materials ensure that the service life of the heating element is prolonged and the quality of the fired products is improved, thereby obtaining substantial benefits such as shortening working hours, reducing costs, and increasing mass production.

To achieve the above purpose, the specific technical content adopted in this case is: design a multifunctional airtight sintering furnace, the sintering furnace mainly has a furnace space, and a furnace door that can be opened and closed. When the product is placed, the exterior is covered with insulation material, and the heating element of the opposite arrangement type is arranged in the furnace space near the furnace wall, and at least: air inlet duct and exhaust duct are arranged around the furnace space , Cooling pipes and gas extraction pipes to facilitate the injection of external gases of different properties into the furnace space through the intake pipe according to demand, and then carry out the firing reaction. After the final firing, the gas is discharged out of the sintering furnace through the exhaust pipe. The effect of facilitating the repeated or successive injection and discharge of the same or different external gases is achieved.

In one embodiment, the number of the air inlet pipes is not limited, and they are selectively distributed around the sintering furnace and then penetrate into the communicating furnace space to connect to an external air supply source and introduce external air into the furnace space. The combustion protection reaction is carried out, and an air inlet pipe is connected to a wet gas barrel, and the external air can be sent into the furnace space after passing the humidification effect of the wet gas barrel.

In one embodiment, the number of exhaust pipes is not limited, and can be connected through the sintering furnace. Exhaust through the furnace space and connected to the outside with a furnace pressure barrel, the gas after the combustion reaction in the furnace space is discharged into the furnace pressure barrel due to pressure, which is a furnace pressure exhaust type; or An exhaust type connecting the furnace door directly connected to the outside is the furnace door exhaust type.

In one embodiment, the exhaust pipe of the furnace pressure exhaust type can be connected with a filter and an unlimited type of oxygen detector according to the firing requirements, so that the firing reaction time of the furnace space can be measured at any time The oxygen content of the gas.

In one embodiment, the number of the cooling pipes is not limited, and they are arranged at different positions from the outer ends and surround the circumference of the sintering furnace and above the inner space of the furnace, and each inner end penetrates in a non-overlapped direction. The inner space of the furnace, such as the upper and lower sides of the inner space of the furnace, can send external air into the preset position in the sintering furnace and cool the sintering furnace.

In one embodiment, one end of the gas extraction pipeline runs through the sintering furnace to communicate with the furnace space, and the other end is connected to a vacuum generator to provide a vacuum for the furnace space to make the furnace space less than The negative pressure state of atmospheric pressure is conducive to low-temperature heat treatment, so that the material is heated in a vacuum environment to prevent oxidation or decarburization of the surface of the material to have an ideal surface quality.

In one embodiment, the heating element can be designed in a corresponding left, right or top and bottom configuration.

(1): Sintering furnace

(10): Furnace space

(11): Thermal insulation materials

(12): Furnace door

(13): Heating element

(14): Intake duct

(141): Moisture Barrel

(15): Exhaust pipe

(151): Furnace Pressure Barrel

(152): filter

(16): Cooling pipeline

(17): The suction pipe

(2): Control box

The first figure is a schematic front view and top perspective view of the structure of the multifunctional airtight sintering furnace of a preferred embodiment of this invention.

The second figure shows the piping arrangement of the multifunctional airtight sintering furnace structure of a preferred embodiment of this creation intention.

Please refer to the first figure. This creation is a structural improvement of a multifunctional airtight sintering furnace. The general composition includes: a sintering furnace (1) and a control box (2). The sintering furnace (1) mainly provides different fired materials (such as metals, ceramics, electronic components, etc.). After being placed in, various phases are injected from the outside according to the needs (such as sintering, melting, debinding, pre-firing, firing, etc.) With the use of gas, the sintering furnace (1) can have and achieve a variety of different maximum temperature changes. The control box (2) is equipped with at least operation function keys including power switch, status display, heating, cooling, gas injection, etc.

Please refer to the first and second pictures together. The sintering furnace (1) mainly has an inner space (10), which provides various types of fired objects inside, and the outside is covered with insulation materials (11) , And a furnace door (12) that can be opened and closed. In the furnace space (10) close to the furnace wall, there is a heating element (13) of the opposite arrangement type (which can be set on the left, right or up or down). In this embodiment, the heating element of molybdenum disilicide is used as an example; in particular, at least: an intake pipe (14), an exhaust pipe (15), and a cooling pipe (16) are provided around the furnace space (10) And the suction pipe (17).

The intake pipes (14) are not limited in number. They are selectively distributed around the sintering furnace (1) and then penetrate into the furnace inner space (10) to be connected to an external gas source, and the external gas (including Helium, dry hydrogen, air, etc.) are introduced into the space (10) of the furnace for combustion protection reaction, and an air inlet pipe (14) is connected to a wet gas barrel (141), which can remove external gas (such as hydrogen) After passing through the humidification effect of the wet gas barrel (141) (to become wet hydrogen), it is sent into the furnace space (10).

The exhaust pipes (15) are not limited in number. They can pass through the sintering furnace (1) to communicate with the furnace space (10), and connect a furnace pressure barrel (151) to the outside. The gas after combustion reaction in the space (10) is discharged into the furnace pressure barrel (151) due to pressure, which is a furnace pressure exhaust type; or a connecting through the furnace door (12) is directly connected to the outside row The gas type is a furnace door gas outlet type. In addition, the exhaust pipe (15) of the furnace pressure exhaust type can be connected with a filter (152) and an unlimited type (such as a portable) oxygen detector (not shown in the figure) according to the firing requirements, thereby The oxygen content of the gas during the firing reaction in the furnace space (10) can be measured at any time.

The number of the cooling pipes (16) is not limited. They are arranged at different positions from the outer ends and surround the circumference of the sintering furnace (1) and the furnace space (10), and the inner ends are not repeated The direction penetrates into the furnace space (10). If the furnace space (10) is relatively upper and lower, the external gas (such as nitrogen) can be sent into the preset position in the sintering furnace (1), and The sintering furnace (1) performs a temperature reduction function.

The exhaust pipe (17) has one end through the sintering furnace (1) to communicate with the furnace space (10), and the other end is connected with a vacuum generator (not shown in the figure) to provide the furnace space (10) ) During vacuuming, the space (10) in the furnace generates a negative pressure state lower than atmospheric pressure, which facilitates low-temperature heat treatment.

According to the use of the above sintering furnace (1), the heating method is selected for the type of fired material, including the combustion reaction generated by injecting different gases through the air inlet pipe (14), so that the temperature of the furnace space (10) reaches The most suitable temperature for the required heat treatment, and the effect of protecting the heating element (13) through the atmosphere. In implementation, when external air is to be input, the external air supply source is connected to the corresponding inlet pipe (14) interface. Experience that the selected air inlet pipe (14) is evenly input into the furnace space (10); after sintering is completed, the gas in the furnace space (10) will be sent out of the sintering furnace (1) through the exhaust pipe (15) outer.

When you want to exhaust the gas inside the furnace space (10) and replace the gas, you can choose to start the furnace pressure barrel (151) and use the pressure difference to send the gas through the exhaust pipe (15) to the furnace pressure barrel (151) before being discharged . At this time, if there is no gas in the space (10) of the furnace, different gases can be injected again to continue the atmosphere sintering of the same fired object or after changing different fired objects.

When it is desired to cool down the inner space (10) of the sintering furnace (1), nitrogen is selected to be injected into the inner and upper space of the inner space (10) from different directions through the air inlet pipe (14), Perform nitrogen cooling. When the temperature of the space (10) in the furnace drops to normal, the furnace pressure barrel (151) is activated to discharge the gas.

To sum up, this case integrates a variety of individual sintering furnaces with different functions into a multifunctional airtight sintering furnace, which not only greatly improves the practical performance of diversified use, but also facilitates industrial implementation and utilization, and is more effective To solve the cost problem of having various types of sintering furnaces to meet different firing requirements in the prior art, and demonstrate the excellent economic value of this creation; in view of the fact that this case has been in compliance with the patent law, it is submitted in accordance with the law patent application.

However, the above descriptions are only the preferred embodiments of this creation, and are not limited to the scope of patents of this creation. Therefore, all simple modifications and equivalent structural changes made by using this creation specification and schematic content should be the same. The rationale is included in the scope of the patent of this creation, and it is to Chen Ming.

(1): Sintering furnace

(10): Furnace space

(14): Intake duct

(141): Moisture Barrel

(15): Exhaust pipe

(151): Furnace Pressure Barrel

(152): filter

(16): Cooling pipeline

(17): The suction pipe

(2): Control box

Claims (7)

A structure improvement of a multifunctional airtight sintering furnace. The sintering furnace mainly has an inner space and a door that can be opened and closed. The inner space of the furnace can be put into the furnace, and the outer part is covered with heat preservation material. The furnace space is close to the furnace wall with heating elements arranged in opposite directions, and the furnace space is also provided with: intake ducts, exhaust ducts, cooling ducts, and exhaust ducts to facilitate the removal of external The gas can be injected into the furnace space through the gas inlet pipe according to demand, and then undergo the firing reaction. After the final firing, the gas is discharged out of the sintering furnace through the exhaust pipe, so that the same or different external gases can be injected repeatedly or successively. Discharge the efficiency of the sintering furnace. For example, the structure improvement of the multifunctional airtight sintering furnace described in item 1 of the scope of patent application, wherein the intake pipes are not limited in number, which are selectively distributed around the sintering furnace and then penetrate the inner space of the connected furnace to connect the external supply The gas source is used to introduce the external air into the furnace space; and an air inlet pipe is connected to a wet gas barrel, and the external air can be sent into the furnace space after the moisture mixing effect of the wet gas barrel. For example, the structure improvement of the multi-functional airtight sintering furnace described in the first item of the scope of patent application, wherein the exhaust pipes are not limited in number, and can be adopted through the sintering furnace to communicate with the space in the furnace, and a furnace pressure barrel is connected to the outside; or An exhaust type connecting the furnace door directly connected to the outside. For example, the structure improvement of the multifunctional airtight sintering furnace described in item 1 of the scope of patent application, wherein the exhaust pipe of the furnace pressure exhaust type can be connected with a filter and an unlimited type of oxygen detector. For example, the structure improvement of the multifunctional gas-tight sintering furnace described in item 1 of the scope of patent application, wherein the number of cooling pipes is not limited, and they are respectively arranged at different positions from the outer end and surround the circumference of the sintering furnace and above the inner space of the furnace. Each inner end penetrates into the furnace space in a non-overlapping direction, so that external air can be sent to a preset position in the sintering furnace. For example, the structure improvement of the multifunctional airtight sintering furnace described in item 1 of the scope of patent application, wherein one end of the gas extraction pipe runs through the sintering furnace to communicate with the furnace space, and the other end is connected to a vacuum generator. For example, the structure improvement of the multifunctional airtight sintering furnace described in the first item of the scope of patent application, wherein the heating element can be designed in the corresponding left, right or upper and lower types.

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