CN110054495A - A kind of novel graphite resistor rod manufacturing process and its manufacturing equipment - Google Patents
A kind of novel graphite resistor rod manufacturing process and its manufacturing equipment Download PDFInfo
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- CN110054495A CN110054495A CN201910112360.3A CN201910112360A CN110054495A CN 110054495 A CN110054495 A CN 110054495A CN 201910112360 A CN201910112360 A CN 201910112360A CN 110054495 A CN110054495 A CN 110054495A
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Abstract
The present invention discloses a kind of novel graphite resistor rod manufacturing process and its manufacturing equipment, and step includes: and 1) stocks up in manufacturing process；2) it calcines；3) it grinds；4) it stirs；5) it rolls；6) primary to impregnate；7) it roasts；8) it forms；9) secondary cross is soaked；10) it is graphitized.In its manufacturing equipment, including filtering ponds ontology, the filtering ponds ontology is the open case structure in upper surface, and the one pair of them medial surface of the filtering ponds ontology is provided with symmetrical retaining mechanism, and another inner surface sides of filtering ponds ontology are provided with symmetrical aeration tube.By molding graphite electrode green compact by mistake immersion treatment twice in the present invention, and pass through the manufacturing equipment, realize graphite electrode green surface anti oxidation layer easy to form, graphite electrode surface has been obstructed to contact with air oxygen, enhance the oxidation resistance of graphite electrode, the oxidation weight loss for reducing graphite electrode, further improves graphite electrode stability status.
Description
Technical field
The invention belongs to graphite product technical fields, and in particular to a kind of manufacturing process and its manufacture of novel graphite resistor rod
Equipment.
Background technique
With the continuous development of present science and technology, graphite electrode is incorporated in extensively as conductive material resistant to high temperature: electric arc
Converter, ore-smelting electric furnace, resistance furnace and the special-shaped graphite products of production.
Mainly using petroleum coke, needle coke as raw material, coal tar pitch by calcining, proportion, mixes graphite electrode as bonding agent
Pinch, die mould, roasting, the techniques such as graphitization are made, be that heating fusing is carried out to furnace charge with electrical arc release electric energy in electric arc furnaces
Conductor, according to its quality index height, general power graphite electrode, high power graphite electrode and ultrahigh power graphite can be divided into
Electrode.The increasingly complication and the diversification of products application of mould geometry lead to the electric discharge precise requirements to spark machine
It is higher and higher.The advantages of graphite electrode is that processing is easier to, and electro-discharge machining removal rate is high, and graphite loss is small, therefore, partial group base
Spark machine client abandons copper electrode and uses graphite electrode instead.Graphite electrode is easier to process, and process velocity is significantly faster than that copper
Electrode.For example milling process processing graphite is used, process velocity is fast compared with other intermetallic composite coatings and not to be needed additional by 2~3 times
Artificial treatment, and copper electrode then needs manpower to frustrate mill.Largely improve the precision of mold cavity.
However graphite electrode is in use, surface is easy to appear oxidative phenomena at high operating temperatures.It substantially reduces
The service life of graphite electrode, the more normal consumed electrode of consumed electrode after simultaneous oxidation is faster.
Summary of the invention
In view of the deficiencies of the prior art, the purpose of the present invention is to provide a kind of manufacturing process of novel graphite resistor rod and its
Manufacturing equipment solves the graphite electrode oxidizable technical problem in surface in use in the prior art.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of manufacturing process of novel graphite resistor rod, comprising the following steps:
1) stock up: it is raw material that 3:2:1 by weight takes petroleum coke, needle coke, anthracite respectively；
2) it calcines: petroleum coke, pitch coke being added in calcining furnace calcine by weight, is heated to 1280-1320 DEG C,
And keeping calcination time is 0.5-1h；
3) it grinds: being crushed after calcined petroleum coke, pitch coke are mixed, fine grinding；
4) it stirs: continuing to add anthracite into the raw material of step 3), and controlling whipping temp is 300-400 DEG C, stirring
Time is 2.5-3h, and is mixed；
5) it rolls: the raw material after stirring is compacted under the pressure of 11-14MPa, and be 1-2h by squeeze time, in advance
The temperature of pressure is 120-150 DEG C, forms green compact；
6) primary cross is soaked: molding raw embryo being immersed in 5-10s in filtering ponds, oxidation resistance liquid is added in the filtering ponds, is controlled
The temperature that raw embryo processed is impregnated is 0-5 DEG C；
7) it roasts: after the raw embryo for crossing leaching is dried, being placed in roasting kiln roasting, maturing temperature is 2600-2800 DEG C, is protected
Warm 100-110h obtains graphite base；
8) it forms: graphite base being crushed to the graphite base powder that grain diameter is 0.05-0.07mm, then into graphite base powder
It adds by weight: 0.1-0.2 parts, 3-4 parts 60-65 parts of acetylene black, 30-35 parts of coal tar, molybdenum disulfide modified vinyl trees
Rouge is uniformly mixed, and is put into forming graphite mold and is heated to 130-150 DEG C, after keeping 2-4h, the precompressed under 15-18MPa pressure
Molding, and cutting section；
9) it is secondary cross soak: preforming mold is placed in 1-2h in the filtering ponds equipped with oxidation resistance liquid, and control filtering ponds into
Row aeration and temperature control are at 5-10 DEG C；
10) it is graphitized: the secondary raw embryo crossed after soaking being taken out into natural air drying, is placed in roaster and is heated to 300-350
DEG C, holding pressure is 30-35MPa, compression forming.
Further, in the step 2) in while calcining closed air, and be uninterruptedly passed through protective gas.
Further, during the step 3) grinding operation, control relative air humidity is 80-90%.
Further, the parts by weight composition of the step 6) and oxidation resistance liquid in step 9) are as follows: 10-15 parts of boric acid, phosphoric acid
70-80 parts of aluminum dihydrogen, 1-3 parts of silicon carbide, 1-3 parts of kaolin.
Further, in the step 10) after natural air drying, after placing 24-36h, then heat in roaster.
Further, 10) the middle temperature change heated is 3-4 DEG C/h, after reaching heating temperature, then keeps the temperature 1-2h.
Applied to the manufacturing equipment of novel graphite resistor rod, including filtering ponds ontology, the filtering ponds ontology is spacious for upper surface
The case structure opened, the one pair of them medial surface of the filtering ponds ontology are provided with symmetrical retaining mechanism, and in the filtering
Ontology another inner surface sides in pond are provided with symmetrical aeration tube；
The retaining mechanism includes rotating disc, hydraulic column, and the terminal surface fitting of the rotating disc is arranged in the filtering ponds
The inner sidewall of ontology, the front end face hydraulic column connection of the rotating disc；
The aeration tube is tubular structure, and the end of the aeration tube is by connecting tube through filtering ponds ontology pool wall and outer
The gas supply mechanism in portion connects；
The bottom centre of the filtering ponds ontology is provided with telescoping mechanism, and telescoping mechanism includes being arranged at filtering ponds ontology bottom
The telescopic mast at portion center, and the bracket at the top of telescopic mast is set, the upper surface of bracket is globoidal structure.
Further, the front end face damping block of the hydraulic column, the outside of the damping block are rubber sleeve, damping block it is interior
Side is provided with damping spring, and is fitted with two hinge bars being hinged, the head and the tail of the hinge bar in the inner wall of rubber sleeve
Both ends are connected to the head and the tail both ends of damping spring.
Applied to the manufacturing equipment of novel graphite resistor rod, including filtering ponds ontology, the filtering ponds ontology is spacious for upper surface
The case structure opened, the one pair of them medial surface of the filtering ponds ontology are provided with symmetrical retaining mechanism, and in the filtering
Ontology another inner surface sides in pond are provided with symmetrical aeration tube；
The retaining mechanism includes rotating disc, hydraulic column, and the terminal surface fitting of the rotating disc is arranged in the filtering ponds
The inner sidewall of ontology, the front end face hydraulic column connection of the rotating disc；
The aeration tube is tubular structure, and the end of the aeration tube is by connecting tube through filtering ponds ontology pool wall and outer
The gas supply mechanism in portion connects；
The bottom centre of the filtering ponds ontology is provided with telescoping mechanism, and the telescoping mechanism includes being arranged in filtering ponds sheet
The telescopic mast of body bottom centre, and the bracket at the top of the telescopic mast is set, the upper surface of the bracket is globoidal structure.
Further, the front end face damping block of the hydraulic column, the outside of the damping block are rubber sleeve, damping block it is interior
Side is provided with damping spring, and is fitted with two hinge bars being hinged, the head and the tail of the hinge bar in the inner wall of rubber sleeve
Both ends are connected to the head and the tail both ends of damping spring.
Beneficial effects of the present invention:
1, molding graphite electrode green compact are passed through into mistake immersion treatment twice in the present invention, realizes graphite electrode green compact table
Face forms anti oxidation layer, has obstructed graphite electrode surface and has contacted with air oxygen, has enhanced the oxidation resistance of graphite electrode, drops
The oxidation weight loss of low graphite electrode further improves graphite electrode stability status.
2, it is soaked in graphite electrode using primary cross is carried out after rolling in the present invention, it is secondary after then being roasted, being formed again
Leaching is crossed, so that the oxide layer that graphite electrode surface is formed is uniformly distributed, and boric acid in oxidation resistance liquid and aluminium dihydrogen phosphate
Good dispersion, cooperation kaolin can effectively be attached to graphite electrode surface, improve deposit efficiency, substantially reduce technique week
Phase.
3, the manufacturing equipment applied to novel graphite resistor rod used in the present invention is, it can be achieved that by graphite electrode green compact at this
In fermentation vat, under the aeration effect of aeration tube, realization can graphite electrode surface come into full contact with oxidation resistance liquid, shorten technique
Period.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, those of ordinary skill in the art are come
It says, without creative efforts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the overall structure diagram of the embodiment of the present invention；
Fig. 2 is the whole the schematic diagram of the section structure of the embodiment of the present invention；
Fig. 3 is the aeration tube structural schematic diagram of the embodiment of the present invention；
Fig. 4 is the damping block structural schematic diagram of the embodiment of the present invention；
Fig. 5 is the damping block squeezed state structural schematic diagram of the embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts all other
Embodiment shall fall within the protection scope of the present invention.
Embodiment 1:
A kind of manufacturing process of novel graphite resistor rod, comprising the following steps:
1) stock up: taking petroleum coke 300kg, needle coke 200kg, anthracite 100kg respectively by weight is raw material.
2) it calcines: petroleum coke, pitch coke being added in closed calcining furnace by weight and calcined, be heated to 1280 DEG C,
Holding calcination time is 0.5h, is uninterruptedly passed through protective gas helium.
3) it grinds: being crushed after calcined petroleum coke, pitch coke are mixed, fine grinding.
4) it stirs: continuing to add anthracite into the raw material of step 3), and controlling whipping temp is 300 DEG C, mixing time
It for 3h, and mixes, the relative air humidity controlled at this time is 90%.
5) it rolls: the raw material after stirring is compacted under the pressure of 14MPa, and be 2h by squeeze time, precompressed
Temperature is 120 DEG C, forms green compact.
6) primary cross is soaked: molding raw embryo being immersed in 10s in filtering ponds, oxidation resistance liquid is added in filtering ponds, controls raw embryo
The liquid that the temperature of immersion is 0 DEG C.
7) it roasting: after the raw embryo for crossing leaching is dried, being placed in roasting kiln roasting, maturing temperature is 2800 DEG C, 110h is kept the temperature,
Obtain graphite base.
8) it forms: graphite base being crushed to the graphite base powder that grain diameter is 0.07mm, then into graphite base powder by weight
Measure part addition: acetylene black 65kg, coal tar 30kg, molybdenum disulfide 0.1kg, 3kg modified vinyl resin are uniformly mixed, are put into
130 DEG C are heated in forming graphite mold, after keeping 2h, the pre-molding under 15MPa pressure, and cutting section.
9) secondary cross is soaked: preforming mold is placed in 1h in the filtering ponds equipped with oxidation resistance liquid, and controls filtering ponds progress
Aeration and temperature control are at 5 DEG C.
10) it is graphitized: the secondary raw embryo crossed after soaking being taken out into natural air drying, after placing for 24 hours, then is placed in roaster and heats
To 300 DEG C, the temperature change of heating is 4 DEG C/h, and after reaching heating temperature, heat preservation 2h keeps pressure for 30MPa, compression forming,
?.
The parts by weight composition of oxidation resistance liquid in step 6) and step 9) are as follows: boric acid 150g, aluminium dihydrogen phosphate 800g, carbonization
Silicon 20g, kaolin 20g.
Embodiment 2:
A kind of manufacturing process of novel graphite resistor rod, comprising the following steps:
1) stock up: taking petroleum coke 300kg, needle coke 200kg, anthracite 100kg respectively by weight is raw material.
2) it calcines: petroleum coke, pitch coke being added in closed calcining furnace by weight and calcined, be heated to 1300 DEG C,
Holding calcination time is 1h, is uninterruptedly passed through protective gas helium.
3) it grinds: being crushed after calcined petroleum coke, pitch coke are mixed, fine grinding.
4) it stirs: continuing to add anthracite into the raw material of step 3), and controlling whipping temp is 320 DEG C, mixing time
It for 2.8h, and mixes, the relative air humidity controlled at this time is 87%.
5) it rolls: the raw material after stirring is compacted under the pressure of 11MPa, and be 1.5h, precompressed by squeeze time
Temperature be 130 DEG C, formed green compact.
6) primary cross is soaked: molding raw embryo being immersed in 8s in filtering ponds, oxidation resistance liquid, control raw embryo leaching are added in filtering ponds
The liquid that the temperature of bubble is 1 DEG C.
7) it roasting: after the raw embryo for crossing leaching is dried, being placed in roasting kiln roasting, maturing temperature is 2760 DEG C, 105h is kept the temperature,
Obtain graphite base.
8) it forms: graphite base being crushed to the graphite base powder that grain diameter is 0.07mm, then into graphite base powder by weight
Measure part addition: acetylene black 60kg, coal tar 35kg, molybdenum disulfide 0.1kg, 3kg modified vinyl resin are uniformly mixed, are put into
135 DEG C are heated in forming graphite mold, after keeping 2h, the pre-molding under 18MPa pressure, and cutting section.
9) secondary cross is soaked: preforming mold is placed in 1h in the filtering ponds equipped with oxidation resistance liquid, and controls filtering ponds progress
Aeration and temperature control are at 8 DEG C.
10) it is graphitized: the secondary raw embryo crossed after soaking being taken out into natural air drying, after placing 28h, then is placed in roaster and heats
To 300 DEG C, the temperature change of heating is 3 DEG C/h, and after reaching heating temperature, heat preservation 2h keeps pressure for 30MPa, compression forming,
?.
The parts by weight composition of oxidation resistance liquid in step 6) and step 9) are as follows: boric acid 100g, aluminium dihydrogen phosphate 700g, silicon carbide
10g, kaolin 10g, and it is mixed and made into solution.
Embodiment 3:
A kind of manufacturing process of novel graphite resistor rod, comprising the following steps:
1) stock up: taking petroleum coke 300kg, needle coke 200kg, anthracite 100kg respectively by weight is raw material.
2) it calcines: petroleum coke, pitch coke being added in closed calcining furnace by weight and calcined, be heated to 1320 DEG C,
Holding calcination time is 0.5h, is uninterruptedly passed through protective gas helium.
3) it grinds: being crushed after calcined petroleum coke, pitch coke are mixed, fine grinding.
4) it stirs: continuing to add anthracite into the raw material of step 3), and controlling whipping temp is 400 DEG C, mixing time
It for 2.5h, and mixes, the relative air humidity controlled at this time is 80%.
5) it rolls: the raw material after stirring is compacted under the pressure of 11MPa, and be 1.5h, precompressed by squeeze time
Temperature be 130 DEG C, formed green compact.
6) primary cross is soaked: molding raw embryo being immersed in 8s in filtering ponds, oxidation resistance liquid, control raw embryo leaching are added in filtering ponds
The liquid that the temperature of bubble is 1 DEG C.
7) it roasting: after the raw embryo for crossing leaching is dried, being placed in roasting kiln roasting, maturing temperature is 2760 DEG C, 100h is kept the temperature,
Obtain graphite base.
8) it forms: graphite base being crushed to the graphite base powder that grain diameter is 0.05mm, then into graphite base powder by weight
Measure part addition: acetylene black 63kg, coal tar 33kg, molybdenum disulfide 0.2kg, 4kg modified vinyl resin are uniformly mixed, are put into
150 DEG C are heated in forming graphite mold, after keeping 4h, the pre-molding under 16MPa pressure, and cutting section.
9) secondary cross is soaked: preforming mold is placed in 2h in the filtering ponds equipped with oxidation resistance liquid, and controls filtering ponds progress
Aeration and temperature control are at 10 DEG C.
10) it is graphitized: the secondary raw embryo crossed after soaking being taken out into natural air drying, after placing 36h, then is placed in roaster and heats
To 350 DEG C, the temperature change of heating is 4 DEG C/h, and after reaching heating temperature, heat preservation 1h keeps pressure for 32MPa, compression forming,
?.
The parts by weight composition of oxidation resistance liquid in step 6) and step 9) are as follows: boric acid 110g, aluminium dihydrogen phosphate 760g, carbonization
Silicon 20g, kaolin 30g, and solution is made after mixing.
Embodiment 4:
A kind of manufacturing process of novel graphite resistor rod, comprising the following steps:
1) stock up: taking petroleum coke 300kg, needle coke 200kg, anthracite 100kg respectively by weight is raw material.
2) it calcines: petroleum coke, pitch coke being added in closed calcining furnace by weight and calcined, be heated to 1280 DEG C,
Holding calcination time is 0.5h, is uninterruptedly passed through protective gas helium.
3) it grinds: being crushed after calcined petroleum coke, pitch coke are mixed, fine grinding.
4) it stirs: continuing to add anthracite into the raw material of step 3), and controlling whipping temp is 400 DEG C, mixing time
It for 2.5h, and mixes, the relative air humidity controlled at this time is 84%.
5) it rolls: the raw material after stirring is compacted under the pressure of 12MPa, and be 1.8h, precompressed by squeeze time
Temperature be 140 DEG C, formed green compact.
6) primary cross is soaked: molding raw embryo being immersed in 8s in filtering ponds, oxidation resistance liquid, control raw embryo leaching are added in filtering ponds
The liquid that the temperature of bubble is 3 DEG C.
7) it roasting: after the raw embryo for crossing leaching is dried, being placed in roasting kiln roasting, maturing temperature is 2670 DEG C, 108h is kept the temperature,
Obtain graphite base.
8) it forms: graphite base being crushed to the graphite base powder that grain diameter is 0.05mm, then into graphite base powder by weight
Measure part addition: acetylene black 65kg, coal tar 35kg, molybdenum disulfide 0.2kg, 4kg modified vinyl resin are uniformly mixed, are put into
140 DEG C are heated in forming graphite mold, after keeping 2h, the pre-molding under 18MPa pressure, and cutting section.
9) secondary cross is soaked: preforming mold is placed in 2h in the filtering ponds equipped with oxidation resistance liquid, and controls filtering ponds progress
Aeration and temperature control are at 10 DEG C.
10) it is graphitized: the secondary raw embryo crossed after soaking being taken out into natural air drying, after placing 34h, then is placed in roaster and heats
To 320 DEG C, the temperature change of heating is 4 DEG C/h, and after reaching heating temperature, heat preservation 1h keeps pressure for 30MPa, compression forming,
?.
The parts by weight composition of oxidation resistance liquid in step 6) and step 9) are as follows: boric acid 140g, aluminium dihydrogen phosphate 720g, silicon carbide
10g, kaolin 20g, and solution is made after mixing.
Embodiment 5:
A kind of manufacturing process of novel graphite resistor rod, comprising the following steps:
1) stock up: taking petroleum coke 300kg, needle coke 200kg, anthracite 100kg respectively by weight is raw material.
2) it calcines: petroleum coke, pitch coke being added in closed calcining furnace by weight and calcined, be heated to 1300 DEG C,
Holding calcination time is 0.5h, is uninterruptedly passed through protective gas helium.
3) it grinds: being crushed after calcined petroleum coke, pitch coke are mixed, fine grinding.
4) it stirs: continuing to add anthracite into the raw material of step 3), and controlling whipping temp is 320 DEG C, mixing time
It for 2.8h, and mixes, the relative air humidity controlled at this time is 86%.
5) it rolls: the raw material after stirring is compacted under the pressure of 13MPa, and be 1h by squeeze time, precompressed
Temperature is 130 DEG C, forms green compact.
6) primary cross is soaked: molding raw embryo being immersed in 8s in filtering ponds, oxidation resistance liquid, control raw embryo leaching are added in filtering ponds
The liquid that the temperature of bubble is 5 DEG C.
7) it roasting: after the raw embryo for crossing leaching is dried, being placed in roasting kiln roasting, maturing temperature is 2800 DEG C, 105h is kept the temperature,
Obtain graphite base.
8) it forms: graphite base being crushed to the graphite base powder that grain diameter is 0.05mm, then into graphite base powder by weight
Measure part addition: acetylene black 64kg, coal tar 35kg, molybdenum disulfide 0.2kg, 3kg modified vinyl resin are uniformly mixed, are put into
145 DEG C are heated in forming graphite mold, after keeping 3h, the pre-molding under 18MPa pressure, and cutting section.
9) secondary cross is soaked: preforming mold is placed in 1h in the filtering ponds equipped with oxidation resistance liquid, and controls filtering ponds progress
Aeration and temperature control are at 8 DEG C.
10) it is graphitized: the secondary raw embryo crossed after soaking being taken out into natural air drying, after placing 30h, then is placed in roaster and heats
To 340 DEG C, the temperature change of heating is 4 DEG C/h, and after reaching heating temperature, heat preservation 1h keeps pressure for 35MPa, compression forming,
?.
The parts by weight composition of oxidation resistance liquid in step 6) and step 9) are as follows: boric acid 130g, aluminium dihydrogen phosphate 780g, carbonization
Silicon 30g, kaolin 10g, and solution is made after mixing.
Such as above-described embodiment it is found that the Parameters variation of each embodiment is as shown in the table:
Wherein the graphite electrode in comparative example is similar graphite electrode directly commercially.
As seen from the above table, the graphite electrode prepared in the present invention realizes that graphite electrode is raw by mistake immersion treatment twice
Base surface forms anti oxidation layer, has obstructed graphite electrode surface and has contacted with air oxygen, oxidative mass loss is decreased obviously, body
Product density is apparently higher than existing graphite electrode, and its resistivity obtains certain control.Thermal expansion coefficient is controlled simultaneously
System is within 1..48 × 10-6 DEG C.Graphite electrode stability status is improved, and substantially reduces process cycle.
As shown in Figs. 1-2, the present embodiment provides a kind of manufacturing equipments applied to novel graphite resistor rod, including filtering ponds sheet
Body 1, filtering ponds ontology 1 are the open case structure in upper surface, and the one pair of them medial surface of filtering ponds ontology 1 is provided with symmetrically
Retaining mechanism 2, and another inner surface sides of filtering ponds ontology 1 are provided with symmetrical aeration tube 3.
Retaining mechanism 2 includes rotating disc 21, hydraulic column 22, and the terminal surface fitting of rotating disc 21 is arranged in filtering ponds ontology 1
Inner sidewall, the front end face hydraulic column 22 of rotating disc 21 connects.
As shown in figure 3, aeration tube 3 is tubular structure, filtering ponds ontology 1 is run through by connecting tube 31 in the end of aeration tube 3
Pool wall is connect with external gas supply mechanism.
The bottom centre of filtering ponds ontology 1 is provided with telescoping mechanism 4, and telescoping mechanism 4 includes being arranged at 1 bottom of filtering ponds ontology
The telescopic mast 41 at portion center, and the bracket 42 at 41 top of telescopic mast is set, the upper surface of bracket 42 is globoidal structure, is played
The effect for holding graphite electrode green compact 5, conveniently takes.
As shown in Figure 4, Figure 5, further, the front end face damping block 23 of hydraulic column 22, the outside of damping block 23 are rubber
Set 231, the inside of damping block 23 is provided with damping spring 232, and is fitted with two in the inner wall of rubber sleeve 231 and is hinged
Hinge bar 233, the head and the tail both ends of hinge bar 233 are connected to the head and the tail both ends of damping spring 232.
The manufacturing equipment used in through the invention, graphite electrode green compact 5 are placed on the bracket 42 of telescoping mechanism 4,
Then it is compressed again by the hydraulic column 22 of retaining mechanism 2,5 both ends of graphite electrode green compact is clamped.Since damping block 23 is in rubber
Hinged hinge bar 233 is arranged in the inside of set 231, behind the front end of damping block 23 and the contact of 5 end face of graphite electrode green compact, squeezes
When, then the both ends of hinge bar 233 are fixed, and middle part is spread outward, and are squeezed with the shrinkage pool of the end of graphite electrode green compact 5
Locking, avoids graphite electrode green compact 5 from falling off under the turn disc of retaining mechanism 2.
The two sides of aeration tank are arranged in aeration tube 3, substantially increase aeration efficiency, real under the aeration effect of aeration tube 3
Now can graphite electrode surface come into full contact with oxidation resistance liquid, shorten process cycle.
In the description of this specification, the description of reference term " one embodiment ", " example ", " specific example " etc. means
Particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained at least one implementation of the invention
In example or example.In the present specification, schematic expression of the above terms may not refer to the same embodiment or example.
Moreover, particular features, structures, materials, or characteristics described can be in any one or more of the embodiments or examples to close
Suitable mode combines.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.
Claims (8)
1. a kind of manufacturing process of novel graphite resistor rod, which comprises the following steps:
1) stock up: it is raw material that 3:2:1 by weight takes petroleum coke, needle coke, anthracite respectively；
2) it calcines: petroleum coke, pitch coke being added in calcining furnace calcine by weight, is heated to 1280-1320 DEG C, and keep
Calcination time is 0.5-1h；
3) it grinds: being crushed after calcined petroleum coke, pitch coke are mixed, fine grinding；
4) it stirs: continuing to add anthracite into the raw material of step 3), and controlling whipping temp is 300-400 DEG C, mixing time
For 2.5-3h, and mix；
5) it rolls: the raw material after stirring is compacted under the pressure of 11-14MPa, and be 1-2h by squeeze time, precompressed
Temperature is 120-150 DEG C, forms green compact；
6) primary cross is soaked: molding raw embryo being immersed in 5-10s in filtering ponds, oxidation resistance liquid, control life are added in the filtering ponds
The temperature that embryo impregnates is 0-5 DEG C；
7) it roasts: after the raw embryo for crossing leaching is dried, being placed in roasting kiln roasting, maturing temperature is 2600-2800 DEG C, keeps the temperature 100-
110h obtains graphite base；
8) it forms: graphite base being crushed to the graphite base powder that grain diameter is 0.05-0.07mm, then into graphite base powder by weight
Measure part addition: 0.1-0.2 parts, 3-4 parts 60-65 parts of acetylene black, 30-35 parts of coal tar, molybdenum disulfide modified vinyl resins mix
It closes uniformly, is put into forming graphite mold and is heated to 130-150 DEG C, after keeping 2-4h, the pre-molding under 15-18MPa pressure,
And cutting section；
9) secondary cross is soaked: preforming mold is placed in 1-2h in the filtering ponds equipped with oxidation resistance liquid, and controls filtering ponds and exposed
Gas and temperature control are at 5-10 DEG C；
10) it is graphitized: the secondary raw embryo crossed after soaking being taken out into natural air drying, is placed in roaster and is heated to 300-350 DEG C, protect
Holding pressure is 30-35MPa, compression forming.
2. the manufacturing process of novel graphite resistor rod according to claim 1, which is characterized in that forged in the step 2)
Closed air while burning, and uninterruptedly it is passed through protective gas.
3. the manufacturing process of novel graphite resistor rod according to claim 1, which is characterized in that the step 3) grinding operation
In the process, control relative air humidity is 80-90%.
4. the manufacturing process of novel graphite resistor rod according to claim 1, which is characterized in that the step 6) and step 9)
The parts by weight of middle oxidation resistance liquid form are as follows: 10-15 parts of boric acid, 70-80 parts of aluminium dihydrogen phosphate, 1-3 parts of silicon carbide, kaolin 1-3
Part.
5. the manufacturing process of novel graphite resistor rod according to claim 1, which is characterized in that natural in the step 10)
After air-drying, after placing 24-36h, then heat in roaster.
6. the manufacturing process of novel graphite resistor rod according to claim 1, which is characterized in that 10) the middle temperature heated
Degree variation is 3-4 DEG C/h, after reaching heating temperature, then keeps the temperature 1-2h.
7. the manufacturing equipment according to claim 1-6 applied to novel graphite resistor rod, which is characterized in that including
Filtering ponds ontology (1), the filtering ponds ontology (1) are the open case structure in upper surface, and the filtering ponds ontology (1) is wherein
A pair of inside face is provided with symmetrical retaining mechanism (2), and is provided with symmetrically in another inner surface sides of the filtering ponds ontology (1)
Aeration tube (3)；
The retaining mechanism (2) includes rotating disc (21), hydraulic column (22), and the terminal surface fitting setting of the rotating disc (21) exists
The inner sidewall of the filtering ponds ontology (1), front end face hydraulic column (22) connection of the rotating disc (21)；
The aeration tube (3) is tubular structure, and filtering ponds ontology is run through by connecting tube (31) in the end of the aeration tube (3)
(1) pool wall is connect with external gas supply mechanism；
The bottom centre of the filtering ponds ontology (1) is provided with telescoping mechanism (4), and the telescoping mechanism (4) includes being arranged in mistake
The telescopic mast (41) of filter tank ontology (1) bottom centre, and the bracket (42) being arranged at the top of the telescopic mast (41), the support
The upper surface of frame (42) is globoidal structure.
8. the manufacturing equipment according to claim 7 applied to graphite electrode, which is characterized in that the hydraulic column (22)
The outside of front end face damping block (23), the damping block (23) is rubber sleeve (231), and damping block is provided with damping on the inside of (23)
Spring (232), and two hinge bars being hinged (233), the hinge bar are fitted in the inner wall of rubber sleeve (231)
(233) head and the tail both ends are connected to the head and the tail both ends of damping spring (232).
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| CN110423141A (en) * | 2019-08-12 | 2019-11-08 | 广东省材料与加工研究所 | Promote processing method, graphite jig and the application of the anti-cyclic oxidation of graphite jig |
| CN110828798A (en) * | 2019-10-31 | 2020-02-21 | 方大炭素新材料科技股份有限公司 | Method for preparing lithium ion battery graphite negative electrode material by wet pressurizing coating |
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| CN110828798A (en) * | 2019-10-31 | 2020-02-21 | 方大炭素新材料科技股份有限公司 | Method for preparing lithium ion battery graphite negative electrode material by wet pressurizing coating |
| CN110828798B (en) * | 2019-10-31 | 2022-06-07 | 方大炭素新材料科技股份有限公司 | Method for preparing lithium ion battery graphite negative electrode material by wet pressurizing coating |
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Application publication date: 20190726 |