CN213135044U - Graphite boat for alloy sintering - Google Patents
Graphite boat for alloy sintering Download PDFInfo
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- CN213135044U CN213135044U CN202021913010.1U CN202021913010U CN213135044U CN 213135044 U CN213135044 U CN 213135044U CN 202021913010 U CN202021913010 U CN 202021913010U CN 213135044 U CN213135044 U CN 213135044U
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- alloy
- profile
- alloy sintering
- graphite boat
- boat
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- 239000000956 alloy Substances 0.000 title claims abstract description 34
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 33
- 238000005245 sintering Methods 0.000 title claims abstract description 33
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 21
- 229910002804 graphite Inorganic materials 0.000 title claims abstract description 21
- 239000010439 graphite Substances 0.000 title claims abstract description 21
- 238000004140 cleaning Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 abstract description 5
- 238000004663 powder metallurgy Methods 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 238000003763 carbonization Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007770 graphite material Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Powder Metallurgy (AREA)
Abstract
The graphite boat for alloy sintering comprises a boat body, wherein the boat body is provided with a bottom plate and a side wall, and is characterized in that the side wall is provided with a through vent hole, the bottom plate is provided with a smooth bottom surface, and a stacking groove is formed in the corner position of the bottom surface; the upper surface of the bottom plate is an alloy sintered surface, the profile contour line corresponding to the bottom surface of the alloy sintered surface is a concave arc surface, a raised strip arranged in the same direction with the vent hole is formed on the arc surface, the raised strip is provided with a lower part with a rectangular profile and an upper part with an inverted trapezoid or inverted triangle profile, the lower part of the rectangular profile is integrally formed with the bottom surface of the alloy sintered surface, and the inverted trapezoid profile is provided with a top surface positioned on the same horizontal plane. The utility model discloses simple process, processing is convenient, has the intensity and the structural stability of preferred, but wide application in powder metallurgy trade.
Description
Technical Field
The utility model relates to a sintering household utensils that carbide vacuum sintering used specifically is a graphite boat for alloy sintering.
Background
In the prior art, the boat is widely applied to a high-temperature reduction furnace and a carbonization furnace, the boat is mainly made of alloy or graphite, and when the boat is used, alloy materials are loaded into the boat and then stacked in a hearth of a sintering furnace for sintering and forming.
The graphite has small resistance temperature coefficient, low thermal inertia, good physical property and low thermal expansion coefficient, can be rapidly heated and cooled, and is more suitable for the application of a vacuum furnace heating body. However, the traditional graphite boat is formed by cutting graphite blocks, and is mostly a flat-bottom sintering boat with a simple structure, and the sintering process of the sintering boat with the flat-bottom structure is easy to cause the conditions of uneven sintering and sticking of sintered substances to the boat; meanwhile, the sintering vessel has the problem of short service life in the use process, becomes thin and brittle after being used for a period of time, and is easy to crack and damage due to stress in the processes of loading, unloading and stacking.
SUMMERY OF THE UTILITY MODEL
The technical problem solved by the utility model is to provide a graphite boat for alloy sintering to solve the shortcomings in the background technology.
The utility model provides a technical problem adopt following technical scheme to realize:
a graphite boat for alloy sintering comprises a boat body, wherein the boat body is provided with a bottom plate and a side wall, the side wall is provided with a through vent hole, the bottom plate is provided with a smooth bottom surface, and a stacking groove is formed in the corner position of the bottom surface; the upper surface of the bottom plate is an alloy sintered surface, the profile contour line corresponding to the bottom surface of the alloy sintered surface is a concave arc surface, a raised strip arranged in the same direction with the vent hole is formed on the arc surface, the raised strip is provided with a lower part with a rectangular profile and an upper part with an inverted trapezoid or inverted triangle profile, the lower part of the rectangular profile is integrally formed with the bottom surface of the alloy sintered surface, and the inverted trapezoid profile is provided with a top surface positioned on the same horizontal plane.
And as a further limitation, the included angle corresponding to the concave arc shape of the bottom surface of the alloy sintering surface is 5-8 degrees.
More preferably, the ribs are provided on the alloy sintered surface at equal intervals, and the width of the lower rectangular cross-section portion of each rib is uniform.
As a further limitation, a gap is left between the top surfaces of the inverted trapezoidal sections which are positioned adjacently.
As a further limitation, the inverted trapezoid-shaped section corresponding to the convex strip is an isosceles trapezoid, and the included angle between the inclined edge of the inverted trapezoid-shaped section and the horizontal plane is 60-70 degrees.
As a further limitation, the section of the inverted triangle corresponding to the raised strip is an isosceles triangle, and the included angle between the side edge of the inverted triangle and the horizontal plane is 50-60 degrees.
As a further limitation, cleaning grooves are formed on the inner sides of the corresponding side walls of the periphery of the alloy sintering surface, and the cross sections of the cleaning grooves are arc grooves.
Has the advantages that: the utility model discloses rational in infrastructure, convenient to use, it has good heat conduction and high temperature resistance performance when conveniently stacking, and the internal heating is more even, and simultaneously, the weight of boat has been reduced by a wide margin through the structural optimization design of inside to the stress variation state of adjustment boat sintering back inner structure, make the whole dynamics performance of boat strengthen, and the blind groove between the sand grip of boat bottom can also make things convenient for the air current to discharge, in order to make things convenient for the shaping agent of sintering in-process to discharge.
Drawings
Fig. 1 is a schematic diagram of a preferred embodiment of the present invention.
Fig. 2 is a sectional detail view of the preferred embodiment of the present invention.
Wherein: 1. a side wall; 2. a convex strip; 3. cleaning the tank; 4. a stacking step; 5. a vent hole; 6. stacking the grooves; 7. a base plate.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand and understand, the present invention is further explained by combining with the specific drawings.
Referring to fig. 1 and 2, in the present embodiment, the graphite boat is a square boat with a side length of 400mm, and is made of a high-density graphite material by one-step molding, and includes a bottom plate 7 and four side walls 1 disposed outside the surface of the bottom plate 7. The lower surface of the bottom plate 7 is a smooth plane, stacking grooves 6 are formed at four corners, and stacking steps 4 are provided on the side walls 1 at positions corresponding to the stacking grooves 6 to facilitate stacking of a plurality of graphite boats for alloy sintering.
The graphite boat for alloy sintering is provided with a blind groove as an alloy sintering surface formed on the upper surface of a bottom plate 7, the upper surface of the bottom plate 7 is a square area and is arranged on the inner side of a side wall 1, and the side length of the square area is 350mm and is arranged in the middle of the upper surface of the bottom plate 7. The outer edge of the alloy sintering surface area is provided with a cleaning groove 3 with a circular section, the cleaning groove 3 is convenient for cleaning residual powder materials in the groove after the boat is used, and the strength of the graphite boat can be ensured. Meanwhile, a concave arc-shaped surface is formed on the inner side of the bottom plate 7 corresponding to the cleaning groove 3, the corresponding circular included angle of the section of the concave arc-shaped surface is 6 degrees, convex strips 2 are arranged on the upper surface of the corresponding area of the arc-shaped surface, the convex strips 2 and the bottom plate 7 are integrally formed, the lower part of the section of the concave arc-shaped surface is rectangular, the width of the rectangular section is 25mm, the upper part of the rectangular section is an inverted trapezoidal section, the inverted trapezoidal section is isosceles trapezoid, the included angle formed by the inclined edge and the horizontal plane is 66 degrees, the top surface of the inverted trapezoidal section is positioned on the same horizontal plane, and a gap of 5mm is reserved between every two adjacent convex strips 2.
In addition, be provided with air vent 5 on two lateral walls 1 of the corresponding position of sand grip 2 head and the tail, the aperture of these air vents is 6mm, sets up relatively, and the interval between the adjacent air vent 5 in position is 60 mm. The cooperation of the air holes 5 and the clearance space at the bottom of the adjacent convex strips 2 can ensure that the atmosphere can form convection of an upper layer and a lower layer in the boat, so that the forming agent can be smoothly and thoroughly taken away and discharged by hydrogen, the phenomena of carburization, peeling and the like of the product can not be caused, and the product quality is improved.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. The graphite boat for alloy sintering comprises a boat body, wherein the boat body is provided with a bottom plate and a side wall, and is characterized in that the side wall is provided with a through vent hole, the bottom plate is provided with a smooth bottom surface, and a stacking groove is formed in the corner position of the bottom surface; the upper surface of the bottom plate is an alloy sintered surface, the profile contour line corresponding to the bottom surface of the alloy sintered surface is a concave arc surface, a raised strip arranged in the same direction with the vent hole is formed on the arc surface, the raised strip is provided with a lower part with a rectangular profile and an upper part with an inverted trapezoid or inverted triangle profile, the lower part of the rectangular profile is integrally formed with the bottom surface of the alloy sintered surface, and the inverted trapezoid profile is provided with a top surface positioned on the same horizontal plane.
2. The graphite boat for alloy sintering according to claim 1, wherein the concave arc shape of the bottom surface of the alloy sintering surface corresponds to an included angle of 5 to 8 °.
3. The graphite boat for alloy sintering according to claim 1, wherein the convex stripes are arranged on the alloy sintering surface at equal intervals, and the width of the lower rectangular cross-sectional portion of each convex stripe is uniform.
4. The graphite boat for alloy sintering according to claim 1, wherein a gap is left between top surfaces of the inverted trapezoidal sections positioned adjacent to each other.
5. The graphite boat for alloy sintering according to claim 1, wherein the inverted trapezoidal cross section corresponding to the protruding strips is an isosceles trapezoid, and an included angle between an oblique side of the isosceles trapezoid and a horizontal plane is 60 to 70 °.
6. The graphite boat for alloy sintering of claim 1, wherein the inverted triangle corresponding to the convex strip has an isosceles triangle cross section, and the included angle between the side of the isosceles triangle and the horizontal plane is 50-60 °.
7. The graphite boat for alloy sintering of claim 1, wherein the alloy sintering surface has cleaning grooves formed around the inner side of the corresponding side wall, and the cross section of the cleaning grooves is a circular arc groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021913010.1U CN213135044U (en) | 2020-09-04 | 2020-09-04 | Graphite boat for alloy sintering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021913010.1U CN213135044U (en) | 2020-09-04 | 2020-09-04 | Graphite boat for alloy sintering |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213135044U true CN213135044U (en) | 2021-05-07 |
Family
ID=75710471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021913010.1U Active CN213135044U (en) | 2020-09-04 | 2020-09-04 | Graphite boat for alloy sintering |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213135044U (en) |
-
2020
- 2020-09-04 CN CN202021913010.1U patent/CN213135044U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Anhui Rongyu Technology Co.,Ltd. Assignor: Miluo Fuyuan New Material Co.,Ltd. Contract record no.: X2023980045584 Denomination of utility model: A graphite boat for alloy sintering Granted publication date: 20210507 License type: Common License Record date: 20231102 |
|
| EE01 | Entry into force of recordation of patent licensing contract |