CN203794967U - Graphite boat - Google Patents
Graphite boat Download PDFInfo
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- CN203794967U CN203794967U CN201420157054.4U CN201420157054U CN203794967U CN 203794967 U CN203794967 U CN 203794967U CN 201420157054 U CN201420157054 U CN 201420157054U CN 203794967 U CN203794967 U CN 203794967U
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- graphite boat
- base plate
- distance
- top margin
- sidewall
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Abstract
The utility model relates to a tool for a hard alloy sintering process and in particular relates to a graphite boat for the hard alloy sintering process. The graphite boat comprises a graphite boat body which is composed of sidewalls and a base plate; the long edge of the graphite boat is 400m long, while the wide edge of the graphite boat is 350m long; the top surface and the bottom surface of the base plate of the graphite boat are both planes; a plurality of vent holes are formed in the sidewalls, and the diameter of each vent hole is 6mm; the spacing between the middle axles of two adjacent vent holes is 40-50mm; the distance between the center of circle of each vent hole and the top edge of the corresponding sidewall is 7-8mm; and a step is arranged at the edge of the bottom of the base plate, and the step is 1mm high and 11mm wide. As a plurality of vent holes are formed in the sidewalls of the graphite boat, a gas generated after the pyrolysis and gasification of a forming agent polyethylene glycol can be immediately discharged so as to guarantee a vacuum state around the product, and therefore, the quality of a blade produced can be improved.
Description
Technical field
The utility model relates to a kind of instrument for hard alloy vacuum sintering process, especially a kind of graphite boat for hard alloy vacuum sintering process.
Background technology
Hard alloy vacuum sintering is now widely used sintering process, is about to qualified pressed compact and packs in graphite boat, then the graphite boat that installs product is packed in stove by the mode of stacked on top, vacuumizes sintering.
When producing hard alloy numerical control blade, by polyoxyethylene glycol (PEG), as forming agent, be general in the world new and high technology, constant product quality and high compared with rubber-like forming agent quality product.When adopting polyoxyethylene glycol (PEG) to make forming agent production hard alloy numerical control blade, during due to sintering, graphite boat all adopts the mode shove charge (totally 3 heaps) that 1+N piles up, the structure of existing graphite boat is unfavorable for the discharge of gas, cause hard alloy numerical control blade can't meet the quality requirement: owing to containing oxygen element in polyoxyethylene glycol (PEG), if gas is discharged not in time, to cause on the one hand blade oxidation, blade internal soundness does not reach requirement; To cause blade face severe oxidation on the other hand, there is air marks in surface, and surface quality does not reach requirement.Therefore, existing graphite boat is only only applicable to the production of rubber-like forming agent product, and rubber-moulding agent is unfavorable for the carbon of determining of alloy product, is fundamentally unfavorable for stabilizing and increasing of alloy product quality.
Another kind of solution is to adopt the positive pressure-off PEG of hydrogen, is about to hydrogen and passes in stove, when in stove, hydrogen pressure reaches certain value, spray, and ignition simultaneously, utilize the powerful penetration power of hydrogen, other gas is taken out of in the lump.Utilizing the de-PEG of hydrogen is a kind of practicable method, but hydrogen is explosion gas, and safety requirements is high, and expensive, and production cost increases.
Utility model content
The utility model is intended to address the above problem, and a kind of graphite boat is provided, and the gas that forming agent polyoxyethylene glycol can be produced after pyrolysis gasification is discharged in time, guarantees that product is vacuum state around, improves the quality of products, and its technical scheme adopting is as follows:
A graphite boat, comprises the graphite boat body being comprised of sidewall and base plate, and the long limit of described graphite boat is x, x=400m, and broadside is y, y=350m; End face and the bottom surface of described graphite boat base plate are plane, equidistantly on the profound limit of described sidewall are evenly distributed with a plurality of ventilating pits, and the diameter of described ventilating pit is d, d=6mm; The tunnel shaft spacing of adjacent two ventilating pits is a, and the span of a is 40-50mm, preferred, a=47.5mm on long limit, a=41.3mm on broadside; Described ventilating pit distance of center circle is b from the distance of sidewall top margin, and the span of b is 7-8mm, preferred b=7.5mm; The distance on described sidewall top margin and base plate base is c, and the span of c is 22-28mm, preferred c=25mm; The distance of described sidewall top margin and base plate top margin is e, and the span of e is 12-18mm, preferred e=15mm; The thickness of described sidewall is f, f=10mm; The bottom margin of described base plate is provided with step, and the height of described step is g, g=1mm, and the width of step is h, h=11mm.
The utlity model has following advantage: the utility model arranges a plurality of ventilating pits on the sidewall of graphite boat, the gas that forming agent polyoxyethylene glycol can be produced after pyrolysis gasification is discharged in time, guarantees that product is vacuum state around, improves blade quality.The utility model is simple in structure, cost is low, safe and reliable.
Accompanying drawing explanation
Fig. 1: vertical view of the present utility model;
Fig. 2: long side view of the present utility model;
Fig. 3: broadside side-view of the present utility model;
1. graphite boat body, 2. sidewall, 3 base plates., 4. ventilating pit, 5. step.
Embodiment
Below in conjunction with accompanying drawing and example, the utility model is described in further detail:
embodiment 1
A graphite boat, comprises the graphite boat body 1 being comprised of sidewall 2 and base plate 3, and the long limit x of described graphite boat is 400m, and broadside y is 350m; End face and the bottom surface of described graphite boat base plate are plane, equidistantly on the profound limit of described sidewall are evenly distributed with a plurality of ventilating pits 4, and the diameter d of described ventilating pit is 6mm; The tunnel shaft spacing a of adjacent two ventilating pits is a=48mm on long limit, a=42mm on broadside; Described ventilating pit distance of center circle is 7mm from the distance b of sidewall top margin; The distance c on described sidewall top margin and base plate base is 22mm; The distance e of described sidewall top margin and base plate top margin is 12mm; The thickness f of described sidewall is 10mm; The bottom margin of described base plate is provided with step 5, and the height g of described step is 1mm, and the width h of step is 11mm, and the width of step is greater than the thickness of sidewall, when stacking graphite boat, can increase stability.
embodiment 2
A graphite boat, comprises the graphite boat body 1 being comprised of sidewall 2 and base plate 3, and the long limit x of described graphite boat is 400m, and broadside y is 350m; End face and the bottom surface of described graphite boat base plate are plane, equidistantly on the profound limit of described sidewall are evenly distributed with a plurality of ventilating pits 4, and the diameter d of described ventilating pit is 6mm; The tunnel shaft spacing a of adjacent two ventilating pits is a=47.5mm on long limit, a=41.3mm on broadside; Described ventilating pit distance of center circle is 7.5mm from the distance b of sidewall top margin; The distance c on described sidewall top margin and base plate base is 25mm; The distance e of described sidewall top margin and base plate top margin is 15mm; The thickness f of described sidewall is 10mm; The bottom margin of described base plate is provided with step 5, and the height g of described step is 1mm, and the width h of step is 11mm.
embodiment 3
A graphite boat, comprises the graphite boat body 1 being comprised of sidewall 2 and base plate 3, and the long limit x of described graphite boat is 400m, and broadside y is 350m; End face and the bottom surface of described graphite boat base plate are plane, equidistantly on the profound limit of described sidewall are evenly distributed with a plurality of ventilating pits 4, and the diameter d of described ventilating pit is 6mm; The tunnel shaft spacing a of adjacent two ventilating pits is a=50mm on long limit, a=40mm on broadside; Described ventilating pit distance of center circle is 8mm from the distance b of sidewall top margin; The distance c on described sidewall top margin and base plate base is 28mm; The distance e of described sidewall top margin and base plate top margin is 18mm; The thickness f of described sidewall is 10mm; The bottom margin of described base plate is provided with step 5, and the height g of described step is 1mm, and the width h of step is 11mm.
With way of example, the utility model is illustrated above, but the utility model is not limited to above-mentioned specific embodiment, all any changes of doing based on the utility model or modification all belong to the claimed scope of the utility model.
Claims (5)
1. a graphite boat, is characterized in that: comprise the graphite boat body being comprised of sidewall and base plate, the long limit of described graphite boat is 400m, and broadside is 350m; End face and the bottom surface of described graphite boat base plate are plane, equidistantly on the profound limit of described sidewall are evenly distributed with a plurality of ventilating pits, and the diameter of described ventilating pit is 6mm; The tunnel shaft spacing of adjacent two ventilating pits is 40-50mm; Described ventilating pit distance of center circle is 7-8mm from the distance of sidewall top margin; The distance on described sidewall top margin and base plate base is 22-28mm; The distance of described sidewall top margin and base plate top margin is 12-18mm; The thickness of described sidewall is 10mm; The bottom margin of described base plate is provided with step, and the height of described step is 1mm, and the width of step is 11mm.
2. a kind of graphite boat according to claim 1, is characterized in that: on described long limit, the tunnel shaft spacing of adjacent two ventilating pits is 47.5mm, and on broadside, the tunnel shaft spacing of adjacent two ventilating pits is 41.3mm.
3. a kind of graphite boat according to claim 1, is characterized in that: described ventilating pit distance of center circle is 7.5mm from the distance of sidewall top margin.
4. a kind of graphite boat according to claim 1, is characterized in that: the distance on described sidewall top margin and base plate base is 25mm.
5. a kind of graphite boat according to claim 1, is characterized in that: the distance of described sidewall top margin and base plate top margin is 15mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420157054.4U CN203794967U (en) | 2014-04-02 | 2014-04-02 | Graphite boat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420157054.4U CN203794967U (en) | 2014-04-02 | 2014-04-02 | Graphite boat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203794967U true CN203794967U (en) | 2014-08-27 |
Family
ID=51377200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420157054.4U Expired - Fee Related CN203794967U (en) | 2014-04-02 | 2014-04-02 | Graphite boat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203794967U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104959607A (en) * | 2015-06-30 | 2015-10-07 | 成都易态科技有限公司 | Exhausting and sintering integration method and tool for implementing same |
| CN106553902A (en) * | 2015-09-30 | 2017-04-05 | 自贡硬质合金有限责任公司 | Carbide chip automatic transferring |
| CN106955999A (en) * | 2017-03-29 | 2017-07-18 | 株洲钻石切削刀具股份有限公司 | A kind of boat and boat group for hard alloy dewaxing technique |
-
2014
- 2014-04-02 CN CN201420157054.4U patent/CN203794967U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104959607A (en) * | 2015-06-30 | 2015-10-07 | 成都易态科技有限公司 | Exhausting and sintering integration method and tool for implementing same |
| CN104959607B (en) * | 2015-06-30 | 2017-05-17 | 成都易态科技有限公司 | Exhausting and sintering integration method and tool for implementing same |
| CN106553902A (en) * | 2015-09-30 | 2017-04-05 | 自贡硬质合金有限责任公司 | Carbide chip automatic transferring |
| CN106553902B (en) * | 2015-09-30 | 2019-01-04 | 自贡硬质合金有限责任公司 | Carbide chip automatic transferring |
| CN106955999A (en) * | 2017-03-29 | 2017-07-18 | 株洲钻石切削刀具股份有限公司 | A kind of boat and boat group for hard alloy dewaxing technique |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140827 Termination date: 20160402 |