CN212070359U

CN212070359U - Metal matrix ceramic composite infiltrates frock

Info

Publication number: CN212070359U
Application number: CN201922451573.7U
Authority: CN
Inventors: 赵楠; 赖龙; 邓宏论; 罗琨; 陈永迪
Original assignee: Zhuhai Kilterx New Material Co ltd
Current assignee: Zhuhai Kilterx New Material Co ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-12-04
Anticipated expiration: 2029-12-30

Abstract

The utility model discloses a frock is infiltrated to metal matrix ceramic composite, including sealed bucket, crucible, food steamer and the connector that is formed with the passageway. The sealing barrel is provided with an air inlet; the crucible is arranged in the sealed barrel, the inner cavity of the crucible is communicated with the air inlet, and the crucible is used for placing metal ingots; the food steamer is arranged in the sealed barrel and provided with an inlet, and the food steamer is used for placing ceramics; the inlet of the channel is arranged at the bottom of the crucible and can be submerged by molten metal formed by melting metal ingots, the outlet of the channel is communicated with the inlet, and any section of the channel is higher than the liquid level of the molten metal. Because any section of the channel is higher than the liquid level of the molten metal, the channel plays a role in separating the crucible from the food steamer, the molten metal can enter the food steamer through the channel and infiltrate with the ceramic when being extruded by the compressed gas, the infiltration starting time is controllable, and the phenomenon that part of the ceramic and the molten metal infiltrate in advance is avoided, so that the serious interface reaction is avoided, and the qualification rate of the metal-based ceramic composite material is improved.

Description

Metal matrix ceramic composite infiltrates frock

Technical Field

The utility model relates to a combined material preparation equipment technical field, in particular to frock is infiltrated to metal matrix ceramic composite.

Background

With the wide application of metal-based ceramic composite materials, the preparation technology thereof is rapidly developed in recent years, and the mature method is a vacuum pressure infiltration method. The method is mainly characterized in that molten metal is infiltrated into a ceramic gap through gas pressurization and then is solidified into the metal-based ceramic composite material. However, this method has definite requirements for the sequence of vacuum-pumping, metal melting and infiltration. However, the design of the tooling at the present stage is not reasonable enough, when the metal ingot begins to melt, part of the metal liquid and the ceramic begin to contact, namely part of the ceramic and the metal liquid begin to infiltrate, then the metal ingot continuously melts and pressurizes the interior of the tooling until all the metal liquid and all the ceramic infiltrate, in the process, the time length difference of the ceramic infiltrating is large, and the infiltrating of part of the metal liquid and the ceramic for a long time can cause serious interface reaction, so that the performance is not uniform, and the qualified metal-based ceramic composite material is difficult to obtain.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a frock is infiltrated to metal matrix ceramic composite can guarantee that evacuation, metal ingot melt and the molten metal process of infiltrating controlled, avoids each operating procedure to influence each other, avoids arousing serious interface reaction, improves metal matrix ceramic composite's qualification rate.

According to the utility model discloses metal matrix ceramic composite infiltrates frock, including sealed bucket, crucible, food steamer and the connector that is formed with the passageway. The sealing barrel is provided with an air inlet; the crucible is arranged in the sealed barrel, the inner cavity of the crucible is communicated with the air inlet, and the crucible is used for placing metal ingots; the food steamer is arranged in the sealed barrel and provided with an inlet, and the food steamer is used for placing ceramics; the inlet of the channel is arranged at the bottom of the crucible and can be submerged by molten metal formed by melting the metal ingot, the outlet of the channel is communicated with the inlet, and any section of the channel is higher than the liquid level of the molten metal.

According to the utility model discloses metal matrix ceramic composite infiltrates frock has following beneficial effect at least: because arbitrary one section of passageway is higher than the liquid level of molten metal, the passageway has played the effect of cutting off crucible and food steamer, the molten metal that is extruded by the compressed gas gets into in the passageway from the import, then through highly being greater than the passageway of molten metal liquid level reachs the food steamer to take place the process of infiltrating with the pottery in the food steamer, the frock evacuation of infiltrating, the metal ingot melts, the pressurization, the molten metal process of infiltrating is independent process, can not the mutual interference influence, the frock of infiltrating can avoid each operating procedure to influence each other, the time of infiltrating the beginning is controllable, avoid partial ceramic to advance and the molten metal process of infiltrating takes place, thereby avoid arousing serious interface reaction, improve metal-based ceramic composite's qualification rate.

According to some embodiments of the utility model, the connector includes catheter and tube cap, the tube cap is equipped with the opening chamber, the tube cap cover is in on the catheter, tube cap open-ended lateral wall with form between the catheter import, the one end of catheter with the top intercommunication in opening chamber, the other end of catheter does the export.

According to some embodiments of the invention, the one end side of the catheter is provided with a communication port, and the lumen of the catheter is communicated with the top of the open cavity through the communication port.

According to some embodiments of the invention, the top of the inner wall of the open cavity and the one end of the catheter are connected by a screw thread.

According to some embodiments of the invention, the inner wall top of the open cavity is provided with an internal thread, the one end side of the catheter is provided with an external thread matching the internal thread.

According to some embodiments of the invention, the crucible is inserted in the inlet and the outer wall of the crucible and the side wall of the inlet are sealingly connected.

According to some embodiments of the utility model, the catheter is vertical to be located the bottom of crucible, the bottom of crucible inner wall with the region of catheter handing-over is equipped with the recess, cap open-ended lateral wall with the inner wall of recess forms the inlet, the inlet with the import intercommunication, cap open-ended lateral wall lower surface with the inner wall height of crucible bottom is the same.

According to some embodiments of the invention, the crucible and the food steamer are cylindrical or cubic.

According to some embodiments of the present invention, a plurality of partition plates for partitioning ceramics are provided in the food steamer.

According to some embodiments of the utility model, the division board level sets up, be equipped with the runner on the division board.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic cross-sectional view of a metal matrix ceramic composite infiltration tool according to an embodiment of the present invention;

FIG. 2 is a partially enlarged schematic view taken at the circle shown in FIG. 1;

figure 3 is a schematic view of the catheter shown in figure 1.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Referring to fig. 1, a metal matrix ceramic composite infiltration tool comprises a sealing barrel 100, a crucible 200, a food steamer 300 and a connector 500 formed with a channel 400. The sealing barrel 100 is provided with an air inlet 110; the crucible 200 is arranged in the sealed barrel 100, the inner cavity of the crucible 200 is communicated with the gas inlet 110, and the crucible 200 is used for placing metal ingots; the food steamer 300 is arranged in the sealed barrel 100, the food steamer 300 is provided with an inlet 310, and the food steamer 300 is used for placing ceramics; the inlet 410 of the channel 400 is provided at the bottom of the crucible 200 and can be submerged by the molten metal melted from the ingot, the outlet 420 of the channel 400 is communicated with the inlet 310, and any section of the channel 400 is higher than the liquid level of the molten metal.

The metal ingot is melted into molten metal in the crucible 200, because any section of the channel 400 is higher than the liquid level of the molten metal, the channel 400 plays a role in separating the crucible 200 from the food steamer 300, when compressed gas is conveyed into the sealed barrel 100 through the gas inlet 110, the molten metal extruded by the compressed gas enters the channel 400 from the inlet 410, then reaches the food steamer 300 through the channel 400 with the height being larger than the liquid level of the molten metal, and the infiltration process is performed with the ceramic in the food steamer 300, the melting of the metal ingot and the melting process of the molten metal are independent processes, the mutual interference influence is avoided, the mutual influence of each operation step is avoided, the time for beginning the infiltration is controllable, the infiltration process of partial ceramic and the molten metal is avoided, the serious interface reaction is avoided, and the qualification rate of the metal-based ceramic composite material is improved.

It will be appreciated that the channel 400 is used to convey molten metal, and that when the ingot is completely melted, the height of one section of the channel 400 is greater than the level of the molten metal. The height of one section of the channel 400 can be set according to actual requirements, and when the height of one section of the channel 400 is larger than that of the crucible 200, as long as the molten metal does not overflow the crucible 200, the channel 400 still keeps the function of separating the crucible 200 from the cage drawer 300. In some examples, the height of the first section of the channel 400 is 20mm higher than the height of the crucible 200, so that the metal level formed after the metal ingot in the crucible is melted is 20mm lower than the lower wall of the first section of the channel 400. After the impregnation tool needs to be placed into the impregnation furnace, the impregnation furnace is vacuumized, and the whole impregnation tool is in a vacuum environment, namely, the impregnation tool is vacuumized at the same time. The infiltration tool is then heated and held in temperature by the infiltration furnace so that the ingot in the crucible 200 melts. Compressed gas can be delivered directly to the gas inlet 110 or to the infiltration furnace, both methods can extrude molten metal into the food steamer 300.

In some embodiments of the present invention, referring further to fig. 2, the connector 500 comprises a catheter 510 and a cap 520, the cap 520 is provided with an open cavity 521, the diameter of the open cavity 521 is larger than the outer diameter of the catheter 510, the cap 520 is sleeved on the catheter 510, i.e. the cap 520 is buckled on the catheter 510, one end of the catheter 510 extends into the open cavity 521, and the lumens of the open cavity 521 and the catheter 510 are a part of the channel 400. The inlet 410 is formed between the open side wall of the tube cap 520 and the catheter 510, one end of the catheter 510 is communicated with the top of the open cavity 521, and the other end of the catheter 510 is provided with the outlet 420. Finally, the channel 400 is in a zigzag form, and the joint area of the bottom of the open cavity 521 and one end of the liquid guide tube 510 is the area where the channel 400 is bent, and the height of the bent area can be larger than the liquid level of the molten metal, so that the channel 400 plays a role in separating the crucible 200 from the food steamer 300.

In some embodiments of the present invention, the side of one end of the catheter 510 is provided with a communication port 511, and the lumen of the catheter 510 is communicated with the top of the open cavity 521 through the communication port 511, so that the whole channel 400 is smoothly communicated.

In some embodiments of the present invention, the top of the inner wall of the open chamber 521 is connected to one end of the catheter 510 by a screw, and the cap 520 can be easily installed or removed by the screw.

In some embodiments of the present invention, the top of the inner wall of the open cavity 521 is provided with an internal thread, and referring further to fig. 3, the side of one end of the catheter 510 is provided with an external thread matching the internal thread. Further, a threaded hole is formed on the inner wall of the top of the open chamber 521, and one end of the catheter 510 is connected with the threaded hole through an external threaded section.

In some embodiments of the present invention, the crucible 200 is inserted at the inlet 310 and the outer wall of the crucible 200 and the sidewall of the inlet 310 are hermetically connected. So that the inner cavity of the food steamer 300, the inlet 310, the channel 400, the inner cavity of the crucible 200, the inner cavity of the sealed barrel 100 and the air inlet 110 are connected into an air cavity, and the air cavity can be vacuumized or pressurized.

In some embodiments of the present invention, the liquid guide tube 510 is vertically disposed at the bottom of the crucible 200, the bottom of the inner wall of the crucible 200 is provided with the groove 210 with the area where the liquid guide tube 510 is jointed, the side wall of the tube cap 520 opening and the inner wall of the groove 210 form the liquid inlet, the liquid inlet and the inlet 410 are communicated, the end face of the tube cap 520 opening is lower than the inner wall of the bottom of the crucible 200, but the end face of the tube cap 520 opening is not abutted against the inner wall of the groove 210. The groove 210 is the lowest part of the inner cavity of the crucible 200, and all the metal liquid flows into the groove 210 and then enters the inlet 410, so that the metal liquid in the crucible 200 can be conveyed into the food steamer 300 as far as possible, excessive metal liquid is prevented from remaining in the crucible 200, and the waste of the metal liquid is reduced. It is understood that the catheter 510 and the crucible 200 can be manufactured in an integral manner; in another embodiment, the liquid guide tube 510 and the crucible 200 are both independent structures, the bottom of the crucible 200 is provided with a threaded through hole, and the other end of the liquid guide tube 510 is connected with the threaded through hole. In another example, the bottom of the crucible 200 is provided with a step-shaped protrusion, a vertical through hole is formed on the protrusion, and the liquid guide tube 510 is the protrusion with the through hole.

In some embodiments of the present invention, the connector 500 may be an inverted U-shaped tube, one end of the U-shaped tube is disposed at the bottom of the inner cavity of the crucible 200, the other end of the U-shaped tube is communicated with the food steamer 300, and the middle section of the U-shaped tube is higher than the liquid level of the molten metal.

In some embodiments of the present invention, the crucible 200 and the food steamer 300 are cylinders or cubes, and the cylinders and the cubes are commonly used tooling structures.

The utility model discloses an in some embodiments, be equipped with in the food steamer 300 if a plurality of partition porcelainous division boards 310, can place a plurality of pottery in the food steamer 300, improve production efficiency, division board 310 can avoid closely laminating between pottery and the pottery to it is inhomogeneous to cause pottery and metal liquid to soak. The partition plate 310 is horizontally disposed, and a gate 311 is disposed on the partition plate 310, and air and molten metal can pass through the gate 311.

In some embodiments of the present invention, the sealing barrel 100 may be made of a3 steel or stainless steel material; the crucible 200, the cage drawer 300, the pipe cap 520 and the partition plate 310 can be made of graphite materials; the ceramic 6 can be made of silicon carbide or alumina or boron carbide fibers; the metal ingot can adopt magnesium alloy or aluminum alloy.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims

1. The utility model provides a frock is infiltrated to metal matrix ceramic composite which characterized in that includes:

the sealing barrel is provided with an air inlet;

the crucible is arranged in the sealed barrel, the inner cavity of the crucible is communicated with the air inlet, and the crucible is used for placing metal ingots;

the food steamer is arranged in the sealed barrel and provided with an inlet, and the food steamer is used for placing ceramics;

the crucible comprises a connecting body, wherein a channel is formed in the connecting body, an inlet of the channel is arranged at the bottom of the crucible and can be submerged by molten metal formed by melting the metal ingot, an outlet of the channel is communicated with the inlet, and any section of the channel is higher than the liquid level of the molten metal.

2. The metal matrix ceramic composite infiltration tool of claim 1, characterized in that: the connector comprises a catheter and a tube cap, the tube cap is provided with an opening cavity, the tube cap is sleeved on the catheter, the inlet is formed between the side wall of the opening of the tube cap and the catheter, one end of the catheter is communicated with the top of the opening cavity, and the other end of the catheter is the outlet.

3. The metal matrix ceramic composite infiltration tool of claim 2, characterized in that: and the side surface of one end of the catheter is provided with a communicating opening, and the tube cavity of the catheter is communicated with the top of the open cavity through the communicating opening.

4. The metal matrix ceramic composite infiltration tool of claim 2 or 3, characterized in that: the top of the inner wall of the open cavity is connected with one end of the liquid guide pipe through threads.

5. The metal matrix ceramic composite infiltration tool of claim 4, characterized in that: the top of the inner wall of the opening cavity is provided with an internal thread, and the side face of one end of the liquid guide pipe is provided with an external thread matched with the internal thread.

6. The metal matrix ceramic composite infiltration tool of claim 1, characterized in that: the crucible is inserted into the inlet, and the outer wall of the crucible is hermetically connected with the side wall of the inlet.

7. The metal matrix ceramic composite infiltration tool of claim 2, characterized in that: the liquid guide pipe is vertically arranged at the bottom of the crucible, a groove is arranged in the area where the bottom of the inner wall of the crucible and the liquid guide pipe are connected, a liquid inlet is formed by the side wall of the opening of the pipe cap and the inner wall of the groove, the liquid inlet is communicated with the inlet, the height of the end face of the opening of the pipe cap is lower than that of the inner wall of the bottom of the crucible, and the end face of the opening of the pipe cap is not abutted to the inner wall of the groove.

8. The metal matrix ceramic composite infiltration tool of claim 1, characterized in that: the crucible and the food steamer are cylindrical or square.

9. The metal matrix ceramic composite infiltration tool of claim 1, characterized in that: a plurality of partition plates for separating ceramics are arranged in the food steamer.

10. The metal matrix ceramic composite infiltration tool of claim 9, characterized in that: the partition plate is horizontally arranged, and a pouring gate is arranged on the partition plate.