Vacuum palladium injection furnace

Abstract

The vacuum palladium injection furnace comprises a control cabinet, a rack body, a heating part, a feeding part, a discharging part and a vacuum part, wherein the heating part is installed on the rack body and used for heating and melting, the feeding part and the discharging part are arranged on the two sides of the heating part respectively, and the vacuum part is used for vacuumizing the heating part. The heating part comprises a heating bin, a heating assembly arranged in the heating bin and a cooling assembly used for cooling, and a sliding assembly used for sliding of the crucible is further arranged in the heating bin. When palladium metal is added into metal, gradual temperature change is guaranteed, and shrinkage cavities caused by temperature change are avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of alloy manufacturing, and in particular relates to a vacuum palladium injection furnace. Background Art

[0002] A metal material with metallic properties formed by an alloying process (smelting, mechanical alloying, sintering, vapor deposition, etc.) of two or more metal elements or by adding other non-metallic elements to a metal.

[0003] In industrial production, palladium is often added to molten metal to improve certain physical properties of the alloy. However, since different metals have different sensitivities to temperature changes, after melting and cooling, due to differences in expansion coefficients and densities, it is very easy to cause local shrinkage holes due to uneven shrinkage rates, thereby reducing the physical properties of the alloy. Summary of the invention

[0004] The main technical problem solved by the present invention is to provide a vacuum palladium injection furnace to solve the shrinkage defect problem caused by the current injection of palladium metal.

[0005] In order to solve the above technical problems, a technical solution adopted by the present invention is:

[0006] A vacuum palladium injection furnace comprises a control cabinet, a frame body, a heating part installed on the frame body for heating and melting, a feeding part and a discharging part respectively arranged on both sides of the heating part, and a vacuum part for evacuating the heating part;

[0007] The feeding part comprises a feeding bin for placing the crucible and a feeding bin door assembly for opening / closing the feeding bin, and a first sealing assembly for fixing and connecting the heating part is provided on a side of the feeding bin away from the feeding bin door assembly;

[0008] The discharging part comprises a discharging bin for taking out the crucible and a discharging bin door assembly for opening / closing the discharging bin, and a second sealing assembly for fixedly connecting the heating part is provided on the side of the discharging bin away from the discharging bin door assembly;

[0009] The heating part comprises a heating chamber, a heating component arranged in the heating chamber, and a cooling component for cooling. A sliding component for sliding the crucible is also arranged in the heating chamber.

[0010] Furthermore, the sliding assembly of the heating part includes at least two sets of sliding shafts arranged in parallel for the crucible to slide and at least two sets of baffles arranged on both sides of the sliding shafts, and the sliding assembly is fixedly connected to the heating chamber through a plurality of support columns;

[0011] The cooling assembly of the heating part includes a cooling plate connected to the end of the sliding shaft and a third cooling water channel arranged inside the cooling plate;

[0012] The heating assembly of the heating part comprises at least two sets of heating plates arranged in parallel on both sides of the sliding assembly and at least two sets of thermocouples for temperature measurement, and the heating plates are fixedly connected to the heating chamber through a plurality of insulating columns;

[0013] The heating chamber of the heating part is also provided with an interface component for connecting with the vacuum pump. The interface component is located on the side wall of the heating chamber and is fixedly connected with the heating chamber.

[0014] Further, the feed bin door assembly of the feed part includes a feed bin door rotatably connected to the feed bin, a first pull rod for operating the crucible, and a first locking arm for locking the feed bin door, and the feed bin door is also provided with a feed observation window;

[0015] The feed bin of the feed part comprises a feed chamber and a first air release valve fixed on the side wall of the feed chamber, and the feed chamber is also provided with a first cooling water circuit for circulating cooling;

[0016] The first sealing assembly of the feed part includes a first sealing bottom plate for fixedly connecting with the heating chamber and a first gate valve installed on the first sealing bottom plate.

[0017] Further, the discharge bin door assembly of the discharge part includes a discharge bin door rotatably connected to the discharge bin, a second pull rod for operating the crucible, and a second locking arm for locking the discharge bin door, and the discharge bin door is also provided with a discharge observation window;

[0018] The discharge bin of the discharge part includes a discharge chamber and an air release valve fixed on the side wall of the discharge chamber, and the discharge chamber is also provided with a second cooling water circuit for circulating cooling;

[0019] The second sealing assembly of the discharge portion includes a second sealing bottom plate for fixedly connecting to the heating bin and a second gate valve installed on the second sealing bottom plate.

[0020] Furthermore, the heating chamber is divided into an outer chamber for bearing pressure and an inner chamber for fixing the cooling component and the heating component, and both ends of the outer chamber are fixedly connected to the first and second sealing components respectively.

[0021] Furthermore, the heating part is divided into three areas, namely a high temperature area, a medium temperature area, and a low temperature area, and the number of heating plates in the high temperature area is greater than the number of heating plates in the medium temperature area.

[0022] Furthermore, the first gate valve and the second gate valve include a valve body, a sealing plate that slides upward / downward in the valve body to open or close the inlet, and a control member that controls the opening and closing of the sealing portion.

[0023] Furthermore, the control member includes a control shaft for pulling the sealing plate to move and a sealing member for sealing the control shaft and the valve body.

[0024] Furthermore, a fourth cooling water circuit is provided in the valve body.

[0025] Furthermore, the heating chamber is also provided with an observation window for observation.

[0026] Beneficial effects of the present invention:

[0027] The present invention divides the heating part into three areas, namely a high temperature area, a medium temperature area and a low temperature area, and evacuates the entire heating part into a vacuum state to stabilize the metal state, and cools down in a regular curve in sequence, effectively avoiding shrinkage cavities when the alloy is cooled. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 It is a schematic diagram of the structure of the feeding part;

[0031] Figure 3 It is a schematic diagram of the structure of the discharging part;

[0032] Figure 4 Schematic diagram of the heating unit structure;

[0033] Figure 5 is a side view of the heating unit;

[0034] Figure 6 is a schematic diagram of the heating component structure;

[0035] Figure 7 It is a schematic diagram of the temperature partition structure of the heating component;

[0036] Figure 8 is a schematic diagram of the structure of the first gate valve;

[0037] Description of reference numerals:

[0038] 1. Valve body; 11. Guide slider; 2. Feeding part; 21. Feeding bin door assembly; 211. Feeding bin door; 212. First locking arm; 213. Feeding observation window; 214. First pull rod; 22. Feeding bin; 221. Feeding chamber; 222. First cooling water channel; 223. First air release valve; 23. First sealing assembly;

[0039] 231, first sealing bottom plate; 232, first plug valve; 232-1, valve body; 232-2, sealing part; 232-3, control part; 232-31, control shaft; 232-32, sealing part; 3, heating part; 31, heating assembly; 311, heating plate; 312, thermocouple; 32, heating bin; 321, outer bin; 322, inner bin; 33, cooling assembly; 331, third cooling water channel; 332, cooling plate; 34, sliding assembly; 341, sliding shaft; 342, baffle; 35, interface assembly; 4, discharge part; 41, discharge bin door assembly; 411, discharge bin door;

[0040] 412, second locking arm; 413, discharge observation window; 42, discharge bin; 421, discharge chamber; 422, second cooling water circuit; 423, air release valve; 43, second sealing assembly; 431, second sealing bottom plate; 432, second gate valve; 5, vacuum unit. DETAILED DESCRIPTION

[0041] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention. Specific embodiment 1:

[0043] like Figures 1 to 8 As shown, a vacuum palladium injection furnace includes a control cabinet 6, a frame body 1, a heating part 3 installed on the frame body 1 for heating and melting, a feeding part 2 and a discharging part 4 respectively arranged on both sides of the heating part 3, and a vacuum part 5 for evacuating the heating part 3;

[0044] The feeding part 2 includes a feeding bin 22 for placing a crucible and a feeding bin door assembly 21 for opening / closing the feeding bin 22. A first sealing assembly 23 for fixedly connecting the heating part 3 is provided on a side of the feeding bin 22 away from the feeding bin door assembly 21. Specifically, the feeding bin door assembly 21 of the feeding part 2 includes a feeding bin door 211 rotatably connected to the feeding bin 22, a first pull rod 214 for operating the crucible, and a first locking arm 212 for locking the feeding bin door 211. , the feed bin door 211 is also provided with a feed observation window 213; specifically, the feed bin 22 of the feed part 2 includes a feed chamber 221 and a first air release valve 223 fixed on the side wall of the feed chamber 221, and the feed chamber 221 is also provided with a first cooling water path 222 for circulating cooling; specifically, the first sealing assembly 23 includes a first sealing bottom plate 231 for fixed connection with the heating bin 32 and a first gate valve 232 installed on the first sealing bottom plate 231. Specifically, the first gate valve 232 and the second gate valve 432 include a valve body 232-1, a sealing plate 232-2 that slides upward / downward in the valve body 232-1 to open or close the inlet, and a control member 232-3 that controls the opening and closing of the sealing part 232-2. Specifically, the control member 232-3 includes a control shaft 232-31 for pulling the sealing plate 232-2 to move and a sealing member 232-32 for sealing the control shaft 232-31 and the valve body 232-1. Specifically, a fourth cooling water path 232-4 is further provided in the valve body 232-1.

[0045] The discharging portion 4 includes a discharging bin 42 for taking out the crucible and a discharging bin door assembly 41 for opening / closing the discharging bin 42, and a second sealing assembly 43 for fixedly connecting the heating portion 3 is provided on the side of the discharging bin 42 away from the discharging bin door assembly 41; specifically, the discharging bin door assembly 41 includes a discharging bin door 411 rotatably connected to the discharging bin 42, a second pull rod 414 for operating the crucible and a second locking arm 412 for locking the discharging bin door 411, and a discharging observation window 413 is also provided on the discharging bin door 411; specifically, the discharging bin 42 includes a discharging chamber 421 and an air release valve 423 fixed on the side wall of the discharging chamber 421, and a second cooling water path 422 for circulating cooling is also provided in the discharging chamber 421; specifically, the second sealing assembly 43 includes a second sealing bottom plate 431 for fixedly connecting to the heating bin 42 and a second plug valve 432 installed on the second sealing bottom plate 431.

[0046] The heating part 3 includes a heating chamber 32 , a heating component 31 disposed in the heating chamber 32 , and a cooling component 33 for cooling. A sliding component 34 for sliding the crucible is also disposed in the heating chamber 32 . Specifically, the sliding assembly 34 includes two groups of sliding shafts 341 arranged in parallel for the sliding of the crucible and two groups of baffles 342 arranged on both sides of the sliding shafts 341, and the sliding assembly 34 is fixedly connected to the heating chamber 32 through a plurality of support columns 343; specifically, the cooling assembly 33 includes a cooling plate 332 connected to the end of the sliding shaft 341 and a third cooling water channel 331 arranged inside the cooling plate 332; specifically, the heating assembly 31 includes two groups of heating plates 311 arranged in parallel on both sides of the sliding assembly 34 and two groups of thermocouples 312 for temperature measurement, and the heating plates 311 are fixedly connected to the heating chamber 32 through a plurality of insulating columns 313; specifically, the heating chamber 32 is also provided with an interface assembly 35 for connecting to the vacuum pump 5, and the interface assembly 35 is located on the side wall of the heating chamber 32 and is fixedly connected to the heating chamber 32. Specifically, the heating chamber 32 is divided into an outer chamber 321 for bearing pressure and an inner chamber 322 for fixing the cooling assembly 33 and the heating assembly 31, and the two ends of the outer chamber are fixedly connected to the first and second sealing assemblies 23 and 43 respectively. Specifically, the heating part 3 is divided into three areas, namely a high temperature area, a medium temperature area, and a low temperature area, and the number of heating plates 311 in the high temperature area is greater than the number of heating plates 311 in the medium temperature area. Specifically, the heating chamber 32 is also provided with an observation window 36 for observation.

[0047] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A vacuum palladium injection furnace, comprising a control cabinet (6), characterized in that: It also comprises a frame body (1), a heating portion (3) mounted on the frame body (1) for heating and melting, a feeding portion (2) and a discharging portion (4) respectively arranged on both sides of the heating portion (3), and a vacuum portion (5) for evacuating the heating portion (3); The feeding part (2) comprises a feeding bin (22) for placing a crucible and a feeding bin door assembly (21) for opening / closing the feeding bin (22); a first sealing assembly (23) for fixedly connecting to the heating part (3) is provided on a side of the feeding bin (22) away from the feeding bin door assembly (21); The discharge portion (4) comprises a discharge bin (42) for taking out the crucible and a discharge bin door assembly (41) for opening / closing the discharge bin (42); a second sealing assembly (43) for fixedly connecting to the heating portion (3) is provided on a side of the discharge bin (42) away from the discharge bin door assembly (41); The heating part (3) comprises a heating chamber (32), a heating component (31) arranged in the heating chamber (32), and a cooling component (33) for cooling. The heating chamber (32) is also provided with a sliding component (34) for sliding the crucible.

2. A vacuum palladium injection furnace according to claim 1, characterized in that: The sliding assembly (34) of the heating part (3) comprises at least two sets of sliding shafts (341) arranged in parallel for the crucible to slide and at least two sets of baffles (342) arranged on both sides of the sliding shafts (341); the sliding assembly (34) is fixedly connected to the heating chamber (32) via a plurality of support columns (343); The cooling assembly (33) of the heating part (3) comprises a cooling plate (332) connected to the end of the sliding shaft (341) and a third cooling water path (331) arranged inside the cooling plate (332); The heating assembly (31) of the heating portion (3) comprises at least two groups of heating plates (311) arranged in parallel on both sides of the sliding assembly (34) and at least two groups of thermocouples (312) for measuring temperature, and the heating plates (311) are fixedly connected to the heating chamber (32) via a plurality of insulating columns (313); The heating chamber (32) of the heating part (3) is also provided with an interface component (35) for connecting to the vacuum pump (5); the interface component (35) is located on the side wall of the heating chamber (32) and is fixedly connected to the heating chamber (32).

3. A vacuum palladium injection furnace according to claim 1, characterized in that: The feed bin door assembly (21) of the feed section (2) comprises a feed bin door (211) rotatably connected to the feed bin (22), a first pull rod (214) for operating the crucible, and a first locking arm (212) for locking the feed bin door (211); the feed bin door (211) is also provided with a feed observation window (213); The feed bin (22) of the feed section (2) comprises a feed chamber (221) and a first air release valve (223) fixed on a side wall of the feed chamber (221); a first cooling water path (222) for circulating cooling is also provided in the feed chamber (221); The first sealing assembly (23) of the feed portion (2) comprises a first sealing bottom plate (231) for fixedly connecting to the heating chamber (32) and a first gate valve (232) mounted on the first sealing bottom plate (231).

4. A vacuum palladium injection furnace according to claim 1, characterized in that: The discharge bin door assembly (41) of the discharge portion (4) comprises a discharge bin door (411) rotatably connected to the discharge bin (42), a second pull rod (414) for operating the crucible, and a second locking arm (412) for locking the discharge bin door (411); the discharge bin door (411) is also provided with a discharge observation window (413); The discharge bin (42) of the discharge part (4) comprises a discharge chamber (421) and an air release valve (423) fixed on the side wall of the discharge chamber (421); a second cooling water circuit (422) for circulating cooling is also provided in the discharge chamber (421); The second sealing assembly (43) of the discharge portion (4) comprises a second sealing bottom plate (431) for fixedly connecting to the heating chamber (42) and a second gate valve (432) mounted on the second sealing bottom plate (431).

5. A vacuum palladium injection furnace according to claim 1, characterized in that: The heating chamber (32) is divided into an outer chamber (321) for bearing pressure and an inner chamber (322) for fixing the cooling component (33) and the heating component (31), and two ends of the outer chamber are fixedly connected to the first and second sealing components (23, 43) respectively.

6. A vacuum palladium injection furnace according to claim 2, characterized in that: The heating portion (3) is divided into three areas, namely a high temperature area, a medium temperature area, and a low temperature area, and the number of heating plates (311) in the high temperature area is greater than the number of heating plates (311) in the medium temperature area.

7. A vacuum palladium injection furnace according to claim 3 or 4, characterized in that: The first gate valve (232) and the second gate valve (432) include a valve body (232-1), a sealing plate (232-2) that slides upward / downward in the valve body (232-1) to open or close the inlet, and a control member (232-3) that controls the opening and closing of the sealing portion (232-2).

8. A vacuum palladium injection furnace according to claim 7, characterized in that: The control member (232-3) includes a control shaft (232-31) for pulling the sealing plate (232-2) to move, and a sealing member (232-32) for sealing the control shaft (232-31) and the valve body (232-1).

9. A vacuum palladium injection furnace according to claim 7, characterized in that: A fourth cooling water channel (232-4) is also provided in the valve body (232-1).

10. The vacuum palladium injection furnace according to claim 1, characterized in that: The heating chamber (32) is also provided with an observation window (36) for observation.

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