CN109732791A - Graphite crucible processing technology - Google Patents
Graphite crucible processing technology Download PDFInfo
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- CN109732791A CN109732791A CN201910139206.5A CN201910139206A CN109732791A CN 109732791 A CN109732791 A CN 109732791A CN 201910139206 A CN201910139206 A CN 201910139206A CN 109732791 A CN109732791 A CN 109732791A
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Abstract
The invention discloses a kind of graphite crucible processing technologys, are related to the technical field of machining graphite, solve the problems, such as that there are waste of raw materials when in the prior art prepared by graphite crucible, its key points of the technical solution are that the following steps are included: a. graphite block is chosen；B. it cuts；C. groove preliminary working；D. waste material is cut off；E. recess sidewall is polished；G. it is heat-treated, by preliminary working cutter and cutting off tool by processing twice, so that generating waste material is columned graphite block, can be utilized again in the process that graphite crucible produces, greatly save raw material.
Description
Technical field
The present invention relates to the technical fields of machining graphite, more specifically, it is related to a kind of graphite crucible processing technology.
Background technique
Since graphite has many excellent performances, thus in the industry such as metallurgy, mechanical, electrical, chemical industry, weaving, national defence
Department is widely applied.One of graphite is mainly used for production refractory material, including refractory brick, crucible, mold etc..Graphite
Crucible has a high fire resistance, low thermal expansivity, during smelting metal, also stable, high temperature when being infiltrated and wash away by metal
Under good thermal shock resistance and excellent conductibility, so graphite crucible and its related product be widely used in directly melt gold
In the technique of category.
The graphite block that compression moulding is generallyd use in the process for carrying out graphite crucible production carries out processing and is made, and passes through
Carrying out cutting processing to graphite block is in meet the size of size, then processes cylinder on graphite block by way of grinding
Groove, so that graphite block is processed into graphite crucible, but use the process of this processing groove when a large amount of material can be wasted
Waste material, has all been processed into graphite powder clast by material, can not be recycled, be existed in the process for carrying out graphite crucible production
The problem of waste of raw materials.
Summary of the invention
In view of the deficiencies of the prior art, the present invention intends to provide a kind of graphite crucible processing technology, lead to
Preliminary working cutter and cutting off tool are crossed by processing twice, so that generating waste material is columned graphite block, it can be in graphite earthenware
It is utilized again in the process of crucible production, greatly saves raw material.
To achieve the above object, the present invention provides the following technical scheme that a kind of graphite crucible processing technology, including it is following
Step:
A. graphite block is chosen: choosing the graphite block for the raw material processed using graphite powder and medium temperature coal pitch as graphite block, stone
Ink powder and medium temperature coal pitch, wherein the mass percent of graphite powder is 70%~90%, and the mass percent of medium temperature coal pitch is 10%
~30%, and graphite block is without sintering processes；
B. it cuts: the graphite block of bulk is cut into the graphite block identical with graphite crucible size of several fritters；
C. groove preliminary working: the graphite block cut down is fixed on the scroll chuck of lathe, then fixed first on lathe
Process tool；Lathe drives graphite block to be rotated by scroll chuck, and pushes preliminary working cutter towards close to graphite block
Direction moved, preliminary working cutter contacted with graphite block after starts to cut graphite block, then proceed to just plus
Work cutter is fed, and is carried out preliminary working to graphite block by preliminary working cutter, is formed stem on graphite block；
D. waste material is cut off: after carrying out preliminary working to groove, under preliminary working cutter is dismantled from lathe, installing cutoff tool
Cutter hub and cutting tooth are inserted into slot by tool by feeding cutting off tool, and the feeding depth of cutter hub is equal to preliminary working cutter
Then feeding depth rotates fixed link, so that cutter hub and cutting tooth are moved towards the direction close to stem axis, by cutting off tooth
Stem is cut, until stem is cut off, then stem is moved and is removed on graphite block；
E. recess sidewall is polished: being polished by side wall of the grinding machine to groove, the size of recess sidewall is polished to regulation ruler
It is very little, and the smooth degree of the polishing raising recess sidewall by grinding machine；
F. bottom portion of groove is polished: being polished by bottom side of the grinding machine to groove, the depth of groove is polished to regulation depth
Degree, and the polishing for passing through grinding machine can be improved the smooth degree of bottom portion of groove；
G. it is heat-treated: the graphite crucible that machining is completed being put into sintering furnace and is heat-treated.
By using above-mentioned technical proposal, graphite block is processed in two times by preliminary working cutter and cutting off tool,
So that waste material is cylindrical after processing, processing and utilization can be carried out in the processing process of small graphite mold, subtracted
The waste to raw material is lacked.
The present invention is further arranged to: in the step b, needs to carry out positioning marking before cutting graphite block,
Typesetting scribing line is carried out on graphite block according to the size of graphite crucible, is convenient in such a way that marking line is drawn on the surface of graphite block
It is positioned when cutting.
By using above-mentioned technical proposal, is positioned by typesetting scribing line when graphite block is cut, can be improved graphite
The precision of block cutting, to improve the machining accuracy of graphite block.
The present invention is further arranged to: before the step b, when carrying out positioning marking to graphite, needing reasonably to carry out
It arranges, reduces the quantity for improving the graphite crucible that one piece of graphite block is cut into the greatest extent, reduce the generation of cutting waste material.
By using above-mentioned technical proposal, by reasonably arranging, the generation of cutting waste material can be reduced, thus reduction pair
The waste of raw material.
The present invention is further arranged to: in the step b, being carried out mostly by band sawing machine when graphite block is cut
Cutting.
The present invention is further arranged to: in the step c, what the feeding depth of preliminary working cutter was slightly less than groove opens up depth
Degree.
By using above-mentioned technical proposal, grinding process is carried out convenient for bottom of the later period to groove, is prevented because of grinding process
The depth of groove is caused to be greater than projected depth.
The present invention is further arranged to: in the step c, the outer diameter of preliminary working cutter is slightly less than the groove of graphite crucible
Diameter.
By using above-mentioned technical proposal, grinding process is carried out convenient for side wall of the later period to groove, is prevented because of grinding process
Cause the side wall diameter of groove to be greater than and is related to size.
The present invention is further arranged to: in the step g, the graphite crucible completed the process is put into sintering furnace,
Temperature is first increased to 150 DEG C~350 DEG C, continues 10h, temperature is then increased to 400 DEG C~450 DEG C, duration 15h,
Then temperature is increased to 500 DEG C~550 DEG C, then temperature is increased to 600 DEG C~700 DEG C by duration 20h, when continuing
Between 15h, finally by temperature height to 800 DEG C~1000 DEG C, duration 10h.
By using above-mentioned technical proposal, by be gradually increased temperature prevent because heating temperature elevation amplitude is larger and lead
The phenomenon that causing graphite crucible to burst.
In conclusion the present invention has the advantages that compared with the prior art
1, the present invention chooses by using a. graphite block；B. it cuts；C. groove preliminary working；D. waste material is cut off；E. recess sidewall is beaten
Mill；G. heat treatment and etc. processed, preliminary working cutter and cutting off tool by processing twice, so that generating waste material is cylinder
The graphite block of shape can be utilized again in the process that graphite crucible produces, greatly save raw material；
2, the present invention is carried out by the outer diameter and feeding depth of control preliminary working cutter convenient for bottom and side wall of the later period to groove
Polishing prevents because it is more than design value that polishing, which causes the outer wall dimension of groove and the depth that opens up of groove,.
Detailed description of the invention
Fig. 1 is the axonometric drawing of the preliminary working cutter of embodiment；
Fig. 2 is the axonometric drawing of the cutting off tool of embodiment.
In figure: 1, preliminary working cutter；2, cutting off tool；21, cutter hub；22, fixed link；23, tooth is cut off.
Specific embodiment
A kind of embodiment one: graphite crucible processing technology, comprising the following steps:
A. graphite block is chosen: choosing the graphite block for the raw material processed using graphite powder and medium temperature coal pitch as graphite block, stone
Ink powder and medium temperature coal pitch, wherein the mass percent of graphite powder is 90%, and the mass percent of medium temperature coal pitch is 10%, and stone
Ink stick is without sintering processes；
B. positioning marking: carrying out typesetting scribing line according to the size of graphite crucible on graphite block, by drawing on the surface of graphite block
The mode of marking line is convenient for being positioned when cutting；It needs reasonably to be arranged when carrying out typesetting, subtract as far as possible
The quantity for improving the graphite crucible that one piece of graphite block is cut into less, reduces the generation of cutting waste material；
C. it cuts: passing through band sawing machine when graphite block is cut mostly and cut, the process that band sawing machine is cut is worked as
In the band saw of band sawing machine is cut along the marking line pulled in advance, improve the precision of cutting；
D. groove preliminary working: the graphite block cut down is fixed on the scroll chuck of lathe, is then fixed such as on lathe
Preliminary working cutter shown in FIG. 1, the cylindrical setting of preliminary working cutter and both ends are all open setting, the outer diameter of preliminary working cutter
It is slightly less than the diameter of the groove of graphite crucible；Lathe drives graphite block to be rotated by scroll chuck, and pushes preliminary working
Cutter is moved towards the direction close to graphite block, and preliminary working cutter starts to cut graphite block after contacting with graphite block
It cuts, then proceedes to feed preliminary working cutter, preliminary working is carried out to graphite block by preliminary working cutter, preliminary working cutter
What feeding depth was slightly less than groove opens up depth；Stem is formed on graphite block；
E. waste material is cut off: after carrying out preliminary working to groove, under preliminary working cutter is dismantled from lathe, being installed such as Fig. 2 institute
The cutting off tool shown, cutting off tool include the cutter hub being arranged in arc-shaped, the fixed link for being fixedly connected on cutter hub one end and consolidate
Surely several cutting teeth being connected on the inside of cutter hub circular arc, the axis of fixed link and the axis of cutter hub are parallel to each other；Outside cutter hub circular arc
The diameter of side is equal to the outer diameter of preliminary working cutter, and the pointed tooth for cutting off tooth is located at the cutting back of tooth from cutter hub side, cuts off tooth in cutter hub
Interior lateral edge circular arc direction uniformly arrange；Cutter hub is extend into the slot of preliminary working completion, cut off tooth pointed tooth and stem it is outer
Week contacts with each other；Cutter hub and cutting tooth are inserted into slot by feeding cutting off tool, the feeding depth of cutter hub, which is equal to, just to be added
The feeding depth of work cutter, then rotates fixed link, so that cutter hub and cutting tooth are moved towards the direction close to stem axis, leads to
It crosses cutting tooth to cut stem, until stem is cut off, then stem is moved and is removed on graphite block；
F. recess sidewall is polished: being polished by side wall of the grinding machine to groove, the size of recess sidewall is polished to regulation ruler
It is very little, and the smooth degree of the polishing raising recess sidewall by grinding machine；
G. bottom portion of groove is polished: being polished by bottom side of the grinding machine to groove, the depth of groove is polished to regulation depth
Degree, and the polishing for passing through grinding machine can be improved the smooth degree of bottom portion of groove；
H. it is heat-treated: the graphite crucible that machining is completed being put into sintering furnace and is heat-treated, the stone that will be completed the process
Black crucible is put into sintering furnace, and temperature is first increased to 150 DEG C, continues 10h, temperature is then increased to 400 DEG C, is continued
Then temperature is increased to 500 DEG C, duration 20h by time 15h, temperature is then increased to 600 DEG C, duration 15h,
Finally by temperature height to 800 DEG C, duration 10h.
A kind of embodiment two: graphite crucible processing technology, comprising the following steps:
A. graphite block is chosen: choosing the graphite block for the raw material processed using graphite powder and medium temperature coal pitch as graphite block, stone
Ink powder and medium temperature coal pitch, wherein the mass percent of graphite powder is 80%, and the mass percent of medium temperature coal pitch is 20%, and stone
Ink stick is without sintering processes；
B. positioning marking: carrying out typesetting scribing line according to the size of graphite crucible on graphite block, by drawing on the surface of graphite block
The mode of marking line is convenient for being positioned when cutting；It needs reasonably to be arranged when carrying out typesetting, subtract as far as possible
The quantity for improving the graphite crucible that one piece of graphite block is cut into less, reduces the generation of cutting waste material；
C. it cuts: passing through band sawing machine when graphite block is cut mostly and cut, the process that band sawing machine is cut is worked as
In the band saw of band sawing machine is cut along the marking line pulled in advance, improve the precision of cutting；
D. groove preliminary working: the graphite block cut down is fixed on the scroll chuck of lathe, is then fixed such as on lathe
Preliminary working cutter shown in FIG. 1, the cylindrical setting of preliminary working cutter and both ends are all open setting, the outer diameter of preliminary working cutter
It is slightly less than the diameter of the groove of graphite crucible；Lathe drives graphite block to be rotated by scroll chuck, and pushes preliminary working
Cutter is moved towards the direction close to graphite block, and preliminary working cutter starts to cut graphite block after contacting with graphite block
It cuts, then proceedes to feed preliminary working cutter, preliminary working is carried out to graphite block by preliminary working cutter, preliminary working cutter
What feeding depth was slightly less than groove opens up depth；Stem is formed on graphite block；
E. waste material is cut off: after carrying out preliminary working to groove, under preliminary working cutter is dismantled from lathe, being installed such as Fig. 2 institute
The cutting off tool shown, cutting off tool include the cutter hub being arranged in arc-shaped, the fixed link for being fixedly connected on cutter hub one end and consolidate
Surely several cutting teeth being connected on the inside of cutter hub circular arc, the axis of fixed link and the axis of cutter hub are parallel to each other；Outside cutter hub circular arc
The diameter of side is equal to the outer diameter of preliminary working cutter, and the pointed tooth for cutting off tooth is located at the cutting back of tooth from cutter hub side, cuts off tooth in cutter hub
Interior lateral edge circular arc direction uniformly arrange；Cutter hub is extend into the slot of preliminary working completion, cut off tooth pointed tooth and stem it is outer
Week contacts with each other；Cutter hub and cutting tooth are inserted into slot by feeding cutting off tool, the feeding depth of cutter hub, which is equal to, just to be added
The feeding depth of work cutter, then rotates fixed link, so that cutter hub and cutting tooth are moved towards the direction close to stem axis, leads to
It crosses cutting tooth to cut stem, until stem is cut off, then stem is moved and is removed on graphite block；
F. recess sidewall is polished: being polished by side wall of the grinding machine to groove, the size of recess sidewall is polished to regulation ruler
It is very little, and the smooth degree of the polishing raising recess sidewall by grinding machine；
G. bottom portion of groove is polished: being polished by bottom side of the grinding machine to groove, the depth of groove is polished to regulation depth
Degree, and the polishing for passing through grinding machine can be improved the smooth degree of bottom portion of groove；
H. it is heat-treated: the graphite crucible that machining is completed being put into sintering furnace and is heat-treated, the stone that will be completed the process
Black crucible is put into sintering furnace, and temperature is first increased to 250 DEG C, continues 10h, temperature is then increased to 425 DEG C, is continued
Then temperature is increased to 525 DEG C, duration 20h by time 15h, temperature is then increased to 650 DEG C, duration 15h,
Finally by temperature height to 900 DEG C, duration 10h.
A kind of embodiment three: graphite crucible processing technology, comprising the following steps:
A. graphite block is chosen: choosing the graphite block for the raw material processed using graphite powder and medium temperature coal pitch as graphite block, stone
Ink powder and medium temperature coal pitch, wherein the mass percent of graphite powder is 70%, and the mass percent of medium temperature coal pitch is 30%, and stone
Ink stick is without sintering processes；
B. positioning marking: carrying out typesetting scribing line according to the size of graphite crucible on graphite block, by drawing on the surface of graphite block
The mode of marking line is convenient for being positioned when cutting；It needs reasonably to be arranged when carrying out typesetting, subtract as far as possible
The quantity for improving the graphite crucible that one piece of graphite block is cut into less, reduces the generation of cutting waste material；
C. it cuts: passing through band sawing machine when graphite block is cut mostly and cut, the process that band sawing machine is cut is worked as
In the band saw of band sawing machine is cut along the marking line pulled in advance, improve the precision of cutting；
D. groove preliminary working: the graphite block cut down is fixed on the scroll chuck of lathe, is then fixed such as on lathe
Preliminary working cutter shown in FIG. 1, the cylindrical setting of preliminary working cutter and both ends are all open setting, the outer diameter of preliminary working cutter
It is slightly less than the diameter of the groove of graphite crucible；Lathe drives graphite block to be rotated by scroll chuck, and pushes preliminary working
Cutter is moved towards the direction close to graphite block, and preliminary working cutter starts to cut graphite block after contacting with graphite block
It cuts, then proceedes to feed preliminary working cutter, preliminary working is carried out to graphite block by preliminary working cutter, preliminary working cutter
What feeding depth was slightly less than groove opens up depth；Stem is formed on graphite block；
E. waste material is cut off: after carrying out preliminary working to groove, under preliminary working cutter is dismantled from lathe, being installed such as Fig. 2 institute
The cutting off tool shown, cutting off tool include the cutter hub being arranged in arc-shaped, the fixed link for being fixedly connected on cutter hub one end and consolidate
Surely several cutting teeth being connected on the inside of cutter hub circular arc, the axis of fixed link and the axis of cutter hub are parallel to each other；Outside cutter hub circular arc
The diameter of side is equal to the outer diameter of preliminary working cutter, and the pointed tooth for cutting off tooth is located at the cutting back of tooth from cutter hub side, cuts off tooth in cutter hub
Interior lateral edge circular arc direction uniformly arrange；Cutter hub is extend into the slot of preliminary working completion, cut off tooth pointed tooth and stem it is outer
Week contacts with each other；Cutter hub and cutting tooth are inserted into slot by feeding cutting off tool, the feeding depth of cutter hub, which is equal to, just to be added
The feeding depth of work cutter, then rotates fixed link, so that cutter hub and cutting tooth are moved towards the direction close to stem axis, leads to
It crosses cutting tooth to cut stem, until stem is cut off, then stem is moved and is removed on graphite block；
F. recess sidewall is polished: being polished by side wall of the grinding machine to groove, the size of recess sidewall is polished to regulation ruler
It is very little, and the smooth degree of the polishing raising recess sidewall by grinding machine；
G. bottom portion of groove is polished: being polished by bottom side of the grinding machine to groove, the depth of groove is polished to regulation depth
Degree, and the polishing for passing through grinding machine can be improved the smooth degree of bottom portion of groove；
H. it is heat-treated: the graphite crucible that machining is completed being put into sintering furnace and is heat-treated, the stone that will be completed the process
Black crucible is put into sintering furnace, and temperature is first increased to 350 DEG C, continues 10h, temperature is then increased to 450 DEG C, is continued
Then temperature is increased to 550 DEG C, duration 20h by time 15h, temperature is then increased to 700 DEG C, duration 15h,
Finally by temperature height to 1000 DEG C, duration 10h.
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
Those of ordinary skill for, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (7)
1. a kind of graphite crucible processing technology, it is characterised in that: the following steps are included:
A. graphite block is chosen: choosing the graphite block for the raw material processed using graphite powder and medium temperature coal pitch as graphite block, stone
Ink powder and medium temperature coal pitch, wherein the mass percent of graphite powder is 70%~90%, and the mass percent of medium temperature coal pitch is 10%
~30%, and graphite block is without sintering processes；
B. it cuts: the graphite block of bulk is cut into the graphite block identical with graphite crucible size of several fritters；
C. groove preliminary working: the graphite block cut down is fixed on the scroll chuck of lathe, then fixed first on lathe
Process tool；Lathe drives graphite block to be rotated by scroll chuck, and pushes preliminary working cutter towards close to graphite block
Direction moved, preliminary working cutter contacted with graphite block after starts to cut graphite block, then proceed to just plus
Work cutter is fed, and is carried out preliminary working to graphite block by preliminary working cutter, is formed stem on graphite block；
D. waste material is cut off: after carrying out preliminary working to groove, under preliminary working cutter is dismantled from lathe, installing cutoff tool
Cutter hub and cutting tooth are inserted into slot by tool by feeding cutting off tool, and the feeding depth of cutter hub is equal to preliminary working cutter
Then feeding depth rotates fixed link, so that cutter hub and cutting tooth are moved towards the direction close to stem axis, by cutting off tooth
Stem is cut, until stem is cut off, then stem is moved and is removed on graphite block；
E. recess sidewall is polished: being polished by side wall of the grinding machine to groove, the size of recess sidewall is polished to regulation ruler
It is very little, and the smooth degree of the polishing raising recess sidewall by grinding machine；
F. bottom portion of groove is polished: being polished by bottom side of the grinding machine to groove, the depth of groove is polished to regulation depth
Degree, and the polishing for passing through grinding machine can be improved the smooth degree of bottom portion of groove；
G. it is heat-treated: the graphite crucible that machining is completed being put into sintering furnace and is heat-treated.
2. graphite crucible processing technology according to claim 1, it is characterised in that: in the step b, carried out to graphite block
It needs to carry out positioning marking before cutting, typesetting scribing line is carried out on graphite block according to the size of graphite crucible, by graphite
The mode that marking line is drawn on the surface of block is convenient for being positioned when cutting.
3. graphite crucible processing technology according to claim 2, it is characterised in that: before the step b, carried out to graphite
It when positioning marking, needs reasonably to be arranged, reduces the quantity for improving the graphite crucible that one piece of graphite block is cut into the greatest extent, subtract
The generation of few cutting waste material.
4. graphite crucible processing technology according to claim 1, it is characterised in that: in the step b, graphite block is cut
Pass through band sawing machine when cutting mostly to be cut.
5. graphite crucible processing technology according to claim 1, it is characterised in that: in the step c, preliminary working cutter
What feeding depth was slightly less than groove opens up depth.
6. graphite crucible processing technology according to claim 1, it is characterised in that: in the step c, preliminary working cutter
Outer diameter is slightly less than the diameter of the groove of graphite crucible.
7. graphite crucible processing technology according to claim 1, it is characterised in that: in the step g, by what is completed the process
Graphite crucible is put into sintering furnace, and temperature is first increased to 150 DEG C~350 DEG C, is continued 10h, is then increased to temperature
400 DEG C~450 DEG C, duration 15h, temperature is then increased to 500 DEG C~550 DEG C, duration 20h, then by temperature
600 DEG C~700 DEG C, duration 15h are increased to, finally by temperature height to 800 DEG C~1000 DEG C, duration 10h.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113977779A (en) * | 2021-09-09 | 2022-01-28 | 银川隆基硅材料有限公司 | Heater and manufacturing method thereof |
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| 中华人民共和国职业技能鉴定辅导丛书编审委员会: "《工具钳工职业技能鉴定》", 31 December 1996 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113977779A (en) * | 2021-09-09 | 2022-01-28 | 银川隆基硅材料有限公司 | Heater and manufacturing method thereof |
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|---|---|
| CN109732791B (en) | 2021-02-09 |
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