Powder metallurgy sintering furnace

Abstract

The utility model particularly relates to the technical field of powder metallurgy, and discloses a powder metallurgy sintering furnace which comprises a workbench furnace body, a servo motor is fixedly arranged in the middle of the side wall of the furnace body, a hearth is formed in the furnace body, a limiting assembly is arranged in the hearth, and the limiting assembly is connected with the servo motor. The limiting assembly comprises a connecting base fixedly arranged at the output end of the servo motor, a bottom plate is fixedly arranged on the side wall of the connecting base, a limiting frame is fixedly arranged on the side wall, close to the upper portion of the bottom plate, of the connecting base, and a plurality of through grooves are formed in the side wall of the limiting frame. The servo motor and the limiting assembly are arranged, the limiting assembly comprises the connecting base fixedly arranged at the output end of the servo motor, and after the sintering raw material is sintered and shaped, the servo motor is started to drive the connecting base to rotate, so that the powder raw material is driven to rotate in the bottom plate and the limiting frame, and overturning is achieved; and the heating uniformity of the bottom of the sintered raw material is improved, so that the sintering quality is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of powder metallurgy, and in particular relates to a powder metallurgy sintering furnace. Background Art

[0002] Powder metallurgy sintering furnace is a heat treatment equipment that uses metal powder (or a mixture of metal powder and non-metal powder) as raw material to press and form, and then fuses the powder raw material into one through sintering. Powder metallurgy technology has been widely used in transportation, machinery, electronics, aerospace, weapons, biology, new energy, information and nuclear industry, and has become one of the most dynamic branches in new materials science. Powder metallurgy technology has the advantages of significant energy saving, material saving and high product precision.

[0003] When the existing powder metallurgy sintering furnace is pressing the powder raw materials, it may cause uneven heating at the bottom of the sintered raw materials, thereby affecting the quality of powder metallurgy sintering. Utility Model Content

[0004] The utility model provides a powder metallurgy sintering furnace, aiming to solve the problem that the bottom of the sintered raw material may be heated unevenly when the powder raw material is pressed and formed in the existing powder metallurgy sintering furnace, thereby affecting the powder metallurgy sintering quality.

[0005] The utility model is implemented as follows: a powder metallurgy sintering furnace includes a workbench furnace body, a servo motor is fixedly arranged at the middle position of the side wall of the furnace body, a furnace chamber is opened inside the furnace body, a limiting component is arranged inside the furnace chamber, the limiting component includes a connecting seat fixedly arranged at the output end of the servo motor, a bottom plate is fixedly arranged on the side wall of the connecting seat, a limiting frame is fixedly arranged on the side wall of the connecting seat close to the top of the bottom plate, and a plurality of through grooves are opened on the side wall of the limiting frame.

[0006] Preferably, four supporting legs are symmetrically fixed at the bottom end of the furnace body, thereby improving the stability of the furnace body support.

[0007] Preferably, a protective door is rotatably connected to the side wall of the furnace body away from the servo motor, and the outer dimensions of the protective door are matched with the outer dimensions of the furnace body, thereby improving the sealing performance of the furnace chamber.

[0008] Preferably, the connecting seat is Y-shaped and fixedly connected with the base plate and the limit frame to form an integrated structure. Limiting plates are fixedly provided at both ends of the base plate and the limit frame. The limiting plates are both ring-shaped, which improves the overall stability of the limiting assembly.

[0009] Preferably, limiting rings are provided on the inner side walls of the furnace close to the two limiting plates, and sliding grooves are provided on the inner side walls of the two limiting rings for the limiting plates to slide, thereby improving the rotation stability of the bottom plate and the limiting frame.

[0010] Preferably, the outer dimensions of the two limit rings are compatible with the inner dimensions of the furnace, two groups of mounting ears are symmetrically fixed on the side walls of the limit rings, and holes are opened on the side walls of the mounting ears, which improves the convenience of installing the limit rings.

[0011] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0012] Firstly, a servo motor and a limit assembly are provided, wherein the limit assembly includes a connecting seat fixedly arranged at the output end of the servo motor. When the sintered raw material is sintered and shaped, starting the servo motor can drive the connecting seat to rotate, thereby driving the powder raw material to rotate inside the bottom plate and the limit frame, thereby realizing flipping, improving the uniformity of heating at the bottom of the sintered raw material, and thus improving the sintering quality; secondly, a limit plate and a limit ring are provided, and the outer size of the limit plate is matched with the inner size of the slide slot, thereby improving the rotation stability of the connecting seat, the bottom plate and the limit frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a front view three-dimensional structural schematic diagram of the utility model.

[0014] Figure 2 It is a schematic diagram of the internal installation structure of the sintering furnace of the utility model.

[0015] Figure 3 It is a schematic diagram of the front view of the three-dimensional structure of the limiting component of the utility model.

[0016] Figure 4 It is a schematic diagram of the three-dimensional structure of the limiting ring of the utility model from a side view.

[0017] The accompanying drawings are marked as follows: 1. furnace body; 2. servo motor; 3. support leg; 4. protective door; 5. furnace chamber; 6. limit assembly; 601. connecting seat; 602. bottom plate; 603. limit frame; 604. limit plate; 605. through groove; 7. limit ring; 8. slide groove; 9. mounting ear; 10. hole groove. DETAILED DESCRIPTION

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0019] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0020] See also Figure 1-4 The utility model provides an embodiment of a powder metallurgy sintering furnace, comprising a workbench furnace body 1, the furnace body 1 is heated by resistance, the resistance wire can be energized to convert electrical energy into thermal energy, thereby realizing heating and sintering, the furnace body 1 is a prior art and is not described in detail here, a servo motor 2 is fixedly provided at the middle position of the side wall of the furnace body 1 by bolts, a furnace chamber 5 is provided inside the furnace body 1 for placing and heating powder metallurgy raw materials, a limiting component 6 is arranged inside the furnace chamber 5, the limiting component 6 comprises a connecting seat 601 fixedly provided at the output end of the servo motor 2 through a coupling, a bottom plate 602 is fixedly provided on the side wall of the connecting seat 601 for placing pressed powder raw materials, a limiting frame 603 is fixedly provided on the side wall of the connecting seat 601 near the top of the bottom plate 602, and the limiting plate 604 is U-shaped for To clamp and limit the powder raw material, a number of through grooves 605 are opened on the side wall of the limit frame 603 to facilitate uniform heat transfer, the connecting seat 601 is Y-shaped and fixedly connected with the bottom plate 602 and the limit frame 603, which are all made of alumina silicon carbide composite material to form an integrated structure, the connecting seat 601, the bottom plate 602 and the limit frame 603 are high in strength, high temperature resistant and corrosion resistant, and both ends of the bottom plate 602 and the limit frame 603 are fixed with limit plates 604, which are annular, which improves the overall stability of the limit assembly 6, and starting the servo motor 2 can drive the connecting seat 601 to rotate, thereby driving the powder raw material to rotate inside the bottom plate 602 and the limit frame 603, thereby realizing flipping, improving the uniformity of heating at the bottom of the sintered raw material, and thus improving the quality of sintering.

[0021] Four supporting legs 3 are symmetrically fixed at the bottom end of the furnace body 1, which improves the stability of the support of the furnace body 1. A protective door 4 is rotatably connected to the side wall of the furnace body 1 away from the servo motor 2. The external dimensions of the protective door 4 are compatible with the external dimensions of the furnace body 1, which improves the sealing of the furnace chamber 5, avoids heat loss during sintering, and improves energy utilization.

[0022] Limiting rings 7 are provided on the inner side walls of the furnace 5 near the two limiting plates 604, and sliding grooves 8 are provided on the inner side walls of the two limiting rings 7 for the limiting plates 604 to slide, thereby improving the rotation stability of the bottom plate 602 and the limiting frame 603. The outer dimensions of the two limiting rings 7 are adapted to the inner dimensions of the furnace 5, and two groups of mounting ears 9 are symmetrically fixed on the side walls of the limiting rings 7. Holes 10 are provided on the side walls of the mounting ears 9, and the holes 10 can be threadedly connected to the inner wall of 5 by bolts, thereby improving the convenience of installation of the limiting rings 7.

[0023] Working principle: When this type of powder metallurgy sintering furnace is in use, the operator first connects an external power supply and places the pressed powder raw material on the surface of the bottom plate 602. The bottom plate 602 is U-shaped and sleeved on the outer surface of the raw material to limit the displacement of the sintered raw material. The protective door 4 is then rotated to close the furnace 5, thereby reducing heat loss during sintering. The power supply of the furnace body 1 is turned on, and the resistance wire inside the furnace body 1 can convert electrical energy into thermal energy, thereby increasing the temperature inside the furnace 5, so that the powder raw material is melted and connected into an integrated structure at high temperature. The furnace body 1 is a prior art and will not be described here. The operator then starts the servo motor 2 to drive the connecting seat 601 to rotate, thereby driving the powder raw material to rotate inside the bottom plate 602 and the limit frame 603, thereby realizing flipping, improving the uniformity of heating at the bottom of the sintered raw material, and thus improving the quality of sintering.

[0024] Secondly, the inner side walls of the two limiting rings 7 are provided with sliding grooves 8 for the limiting plates 604 to slide. The limiting rings 7 can limit the lateral displacement of the limiting plates 604, thereby improving the rotation stability of the bottom plate 602 and the limiting frame 603.

[0025] The above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit the protection scope of the utility model. Obviously, the described embodiments are only some embodiments of the utility model, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Although the utility model has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the utility model according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the utility model in essence, and these technical solutions also belong to the scope of protection of the utility model.

Claims

1. A powder metallurgy sintering furnace, characterized in that: The invention comprises a workbench furnace body (1): a servo motor (2) is fixedly arranged at the middle position of the side wall of the furnace body (1); a furnace chamber (5) is provided inside the furnace body (1); a limit assembly (6) is provided inside the furnace chamber (5); the limit assembly (6) comprises a connecting seat (601) fixedly arranged at the output end of the servo motor (2); a bottom plate (602) is fixedly arranged on the side wall of the connecting seat (601); a limit frame (603) is fixedly arranged on the side wall of the connecting seat (601) above the bottom plate (602); and a plurality of through grooves (605) are provided on the side wall of the limit frame (603).

2. A powder metallurgy sintering furnace according to claim 1, characterized in that: Four supporting legs (3) are symmetrically fixed at the bottom end of the furnace body (1).

3. A powder metallurgy sintering furnace according to claim 2, characterized in that: A protective door (4) is rotatably connected to the side wall of the furnace body (1) away from the servo motor (2), and the external dimensions of the protective door (4) are compatible with the external dimensions of the furnace body (1).

4. A powder metallurgy sintering furnace according to claim 3, characterized in that: The connecting seat (601) is Y-shaped and fixedly connected to the bottom plate (602) and the limiting frame (603) to form an integrated structure. Limiting plates (604) are fixedly provided at both ends of the bottom plate (602) and the limiting frame (603), and the limiting plates (604) are both in an annular shape.

5. The powder metallurgy sintering furnace according to claim 1, characterized in that: Limiting rings (7) are provided on the inner side walls of the furnace (5) close to the two limiting plates (604), and sliding grooves (8) are provided on the inner side walls of the two limiting rings (7) for the limiting plates (604) to slide.

6. A powder metallurgy sintering furnace according to claim 5, characterized in that: The external dimensions of the two limiting rings (7) are compatible with the internal dimensions of the furnace (5), two groups of mounting ears (9) are symmetrically fixed on the side walls of the limiting rings (7), and holes (10) are opened on the side walls of the mounting ears (9).

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