CN106242536B - A kind of Ceramic Balls and preparation method thereof of built-in alpha+beta titanium alloys skeleton - Google Patents
A kind of Ceramic Balls and preparation method thereof of built-in alpha+beta titanium alloys skeleton Download PDFInfo
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- CN106242536B CN106242536B CN201610650575.7A CN201610650575A CN106242536B CN 106242536 B CN106242536 B CN 106242536B CN 201610650575 A CN201610650575 A CN 201610650575A CN 106242536 B CN106242536 B CN 106242536B
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
- B28B11/243—Setting, e.g. drying, dehydrating or firing ceramic articles
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- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
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- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/71—Ceramic products containing macroscopic reinforcing agents
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Abstract
A kind of Ceramic Balls of built-in alpha+beta titanium alloys skeleton, the skeleton of the integral structure made of alpha+beta titanium alloys and the spheres of ceramic wrapped up outside it are formed, are manufactured by way of whole pressing, high temperature sintering；The total volume of alpha+beta titanium alloys skeleton is the 3-5% of Ceramic Balls volume, and longest direction size is less than the 70% of spheres of ceramic outer diameter；Spheres of ceramic is made of alumina-based ceramic material.The invention also discloses preparation methods, including the processes such as ingredient, ball milling, mist projection granulating, feed bin are aging, Profile procoess, high temperature sintering, the polishing of clear powder, finished product drying, have especially carried out a large amount of improvement in Profile procoess, high temperature sintering process.The Ceramic Balls globality of built-in alpha+beta titanium alloys skeleton of the invention is more preferable, non-breakable, and preparation method by the improvement to Profile procoess, high temperature sintering process make it possible built-in alpha+beta titanium alloys skeleton Ceramic Balls industrialized production.
Description
Technical field
The present invention relates to cement manufacture field more particularly to a kind of Ceramic Balls and its preparation of built-in alpha+beta titanium alloys skeleton
Method.
Background technique
Cement ball mill is with adaptable to material, energy continuous production, reduction ratio is big, is easy to adjust the speed the thin of ground prod
The features such as spending.The working principle of common cement ball mill is, material by feeding device through pan feeding hollow shaft spiral equably into
Enter in grinding machine storehouse, there is ladder lining board or corrugated liner, the steel ball or Ceramic Balls of built-in different size in the storehouse, barrel body rotation generates
Centrifugal force is fallen after taking steel ball or Ceramic Balls to certain altitude, generates bang and abrasive action to material.Cement ball mill pottery
Porcelain ball is the common grinding material medium of cement ball-milling machine equipment, passes through touching between cement ball mill Ceramic Balls, material, liner plate
It hits friction and generates ablation, so that the partial size of material be further decreased.Therefore, Ceramic Balls hardness when in use and wear-resisting
Property be one of the principal element for influencing grinding shaping effect, simultaneously as ceaselessly hit for a long time, for the anti-of mill ball
Impact property has high requirement.
In the prior art, cement ball mill has had with Ceramic Balls and has relatively mostly used, most of to use traditional Al2O3-
CaO-MgO-SiO2 quaternary system also has a small amount of inventor to improve on its formula, special to achieve the effect that.Such as this hair
Bright people has applied for the more parts of Ceramic Balls using new formulation before this, has high rigidity, high temperature resistant, high life, easily molded, toughness
The high effect of good, production cement degree of purity.
But in the research of long-term cement ball mill Ceramic Balls, the inventors discovered that, starting, emergency stop, throwing pendant etc.
Impact caused by be crushed be one of most common damage mode of Ceramic Balls, this greatly restricts the hair of cement ball-milling industry
Exhibition.
Titanium is the important structural metal of one kind to grow up the 1950s, and titanium alloy is because with intensity, plasticity, tough
Property it is high, corrosion resistance is good, heat resistance, high formability the features such as and be widely used in every field, especially its specific strength superelevation
Advantage is preced with all metals and alloy absolutely.Wherein alpha+beta titanium alloys are two-phase alloys, have good comprehensive performance, structure stability
It is good, there are good toughness, plasticity and Hot Deformation Performance, unlike pure titanium and alpha titanium alloy, alpha+beta titanium alloys can also pass through
Heat treatment makes alloy strengthening, and the intensity after heat treatment about improves 50%~100% than annealed condition；Elevated temperature strength is high, can be at 400 DEG C
Long-term work at a temperature of~500 DEG C.Using the refractory metals such as alpha+beta titanium alloys toughness, plasticity, high intensity the advantages that, adopt
With the method for implantation alpha+beta titanium alloys skeleton, the globality of Ceramic Balls can be made more preferable, and can be by skeleton when being impacted
Impact force is shared, is non-breakable.
Alpha+beta titanium alloys skeleton is implanted into Ceramic Balls and is belonging to blank field before this, be there is no and is seen that any research is seen in paper
Or patent, the preparation method for being able to achieve its industrialized production are even more so.
Summary of the invention
In view of the above defects of the prior art, the present invention is intended to provide a kind of globality is more preferable, non-breakable
The Ceramic Balls of built-in alpha+beta titanium alloys skeleton and the preparation method for being able to achieve its industrialized production.
To achieve the goals above, the invention adopts the following technical scheme: a kind of ceramics of built-in alpha+beta titanium alloys skeleton
Ball, the skeleton of the integral structure made of alpha+beta titanium alloys and the spheres of ceramic wrapped up outside it form, and pass through whole pressing, height
The mode of temperature sintering manufactures；The total volume of alpha+beta titanium alloys skeleton is the 3-5% of Ceramic Balls volume, and longest direction size is less than ceramics
The 70% of sphere outer diameter；Spheres of ceramic is made of alumina-based ceramic material.
The Ceramic Balls of above-mentioned built-in alpha+beta titanium alloys skeleton, in which: the alpha+beta titanium alloys skeleton be integral die-cast at
The dendroid or herring-bone form structure of type.
The Ceramic Balls of above-mentioned built-in alpha+beta titanium alloys skeleton, in which: the alpha+beta titanium alloys are specially TC6 titanium alloy.
The Ceramic Balls of above-mentioned built-in alpha+beta titanium alloys skeleton, in which: the formula of the spheres of ceramic are as follows: aluminium oxide 92-
95%, di-iron trioxide 0.5-2%, kaolin 0.8-3%, silicon carbide 0.2-2%, titanium dioxide 1.5-2%, titanium carbide 0.8-1%, two
Molybdenum sulfide 0.3-2%.
The preparation method of the Ceramic Balls of above-mentioned built-in alpha+beta titanium alloys skeleton, including ingredient, ball milling, mist projection granulating, feed bin
Aging, Profile procoess, high temperature sintering, the polishing of clear powder, finished product drying process, in which:
A. the Profile procoess process includes following sub- process:
1) first watering powder: lower semisphere mould is transported to station one by stepping conveying belt, and the powder of ceramic prilling is passed through
Conveying pipeline is poured into lower semisphere mould, and the moisture control of powder is below 0.5%；
2) skeleton dropping place: being transported to station two for lower semisphere mould, then will be whole by placing the device of alpha+beta titanium alloys skeleton
The dendroid of body die cast or the alpha+beta titanium alloys skeleton of herring-bone form are placed into the centre of surface position of the powder in lower semisphere mould
It sets；
3) sphere presses full circle: lower semisphere mould is transported to station three；The top that powder lot in bags is put into episphere mould is entered
Mouthful, then molding press is entered in the mode parallel with the upper entrance in episphere mould, is revolved clockwise after circular groove reaching in upper
Turn 90 °, molding press is fixed in the vertical direction with episphere mould；Subsequent molding press drives episphere mould downlink, until episphere mould
It is contacted with lower semisphere mould, molding press is rotated by 90 ° counterclockwise, and molding press and episphere mould release fixation in the vertical direction；Pressing mold
Machine downlink crushes the sack of powder lot in bags, in powder lot in bags episphere die cavity is got by press-powder hole;Molding press
It continues traveling downwardly to circular groove in lower is reached, powder lot in bags and alpha+beta titanium alloys skeleton, powder are squeezed into one, form complete pottery
Porcelain ball base；Molding press continues to rotate after rotating clockwise 90 °, is limited by the closed section of lower interior circular groove, and molding press drives upper half
The rotation of ball die cavity, rotation carry out at least 3 circles, and episphere die cavity machines away the extra blank on Ceramic Balls base surface；Subsequent pressing mold
Machine lifts, and episphere die cavity is driven to leave Ceramic Balls base.
4) ball base shifts: lower semisphere mould being transported to station four, Ceramic Balls base is transferred to high temperature casket by transfer device
Alms bowl sprinkles parting sand.
B. the high temperature sintering process specifically: by the high temperature sagger of the Ceramic Balls base obtained equipped with Profile procoess process
It is sent into the good tunnel oven of air-tightness；Logical inert gas, high temperature sintering temperature 1350- are kept in tunnel oven during heating
1400 DEG C, firing period 28-30h；The type of cooling after high temperature sintering is to be cooled to 780-800 DEG C with kiln, is then heated to
870 DEG C, 1-2h is kept the temperature, then be cooled to 550-650 DEG C with kiln, keep the temperature 2h, it is air-cooled then to open kiln.
The preparation method of the Ceramic Balls of above-mentioned built-in alpha+beta titanium alloys skeleton, in which: used in the ball base transfer process
Transfer device be negative-pressure adsorption-type.
The preparation method of the Ceramic Balls of above-mentioned built-in alpha+beta titanium alloys skeleton, in which: station one fill powder be pottery
The 48-52% of the total dosage of porcelain ball, the capacity of the powder lot in bags of station three should be the volume in press-powder hole and the 55- of the total dosage of Ceramic Balls
58% sum.
The present invention is without the prior art.The ceramics that the present invention uses are matched using the patent that the present inventor had applied before this
Side, with high rigidity, high temperature resistant, corrosion-resistant, operating power consumption is low, material consumption is low, binding force is good, jolt capacity is strong, shock resistance antiknock
It shakes, the advantage that the cement fineness of production and later strength are high；Relative to current Ceramic Balls integral sintered, without built-in metal skeleton
For, method of the Ceramic Balls of built-in alpha+beta titanium alloys skeleton of the invention using implantation alpha+beta titanium alloys skeleton, alpha+beta titanium alloys bone
The preferred TC6 titanium alloy of frame, is formed using integral die-cast, skeleton good integrity and is easy to implement industrialized production；Dendroid or fish
Bone-shaped structure can guarantee that it combines closely with ceramics, to keep Ceramic Balls globality more preferable；Size is moderate, both guarantees die mould
Manufacturing procedure process is convenient, and can guarantee that the globality of Ceramic Balls is more preferable.The Ceramic Balls that the present invention makes both had maintained traditional pottery
The advantages of porcelain ball, but can fully play alpha+beta titanium alloys as biphase titanium alloy intensity, plasticity, toughness it is high, corrosion resistance is good,
The high advantage of heat resistance, high formability, specific strength, in conjunction with ceramics itself high abrasion, high rigidity the features such as, and rushed
Impact force can be shared by skeleton when hitting, is non-breakable, avoiding the impact of starting, emergency stop, throwing pendant etc. caused by Ceramic Balls
It is broken；And itself is (9.41~10.03) × 10 because of the thermal expansion coefficient of titanium-6/ DEG C, with ceramics during the sintering process swollen
Swollen rate is very close, avoid in heating temperature-fall period because expansion rate it is different caused by ceramic fragmentation.
Meanwhile the preparation method of the Ceramic Balls of the built-in alpha+beta titanium alloys skeleton in the present invention, the immediate prior art are
The present inventor distinguishes and is in the preparation method for the more parts of Ceramic Balls applied before this, and the present invention is because of the built-in α in Ceramic Balls
+ beta-titanium alloy skeleton, use conventional methods cannot achieve implantation skeleton at all, therefore Profile procoess process uses first powder filling
Sub- process, the advantages such as material, skeleton dropping place, sphere pressing full circle, the transfer of ball base are that the pressing of ball base is greater than demand, pressure because of raw material
Solidity is high, and skeleton is tightly combined with ball base；It is simple and fast without increasing extras using rotary cutting full circle；Negative-pressure adsorption
Formula transfer equipment avoids the damage in transfer process to Ceramic Balls.Many and diverse procedure is extremely letter, makes entire Profile procoess process
Process is succinctly orderly, is able to achieve the automatic production of industrialization；In addition, Ceramic Balls base during the sintering process because ceramics not yet molding, its
Internal alpha+beta titanium alloys skeleton has very strong chemical activity at high temperature, is very easy to absorb the impurity such as hydrogen, oxygen, nitrogen, carbon,
So being passed through inert gas such as argon gas in high temperature sintering process, while traditional shuttle kiln for needing higher temperature is abandoned, only
It controls using tunnel oven and by maximum temperature at 1400 DEG C, avoids the severe oxidation and degraded in mechanical properties under higher temperature；It burns
The type of cooling, which is used, after knot is cooled to 780-800 DEG C with kiln, then heats to 870 DEG C, keeps the temperature 1-2h, then be cooled to 550- with kiln
650 DEG C, keep the temperature 2h, it is air-cooled then to open kiln, be because alpha+beta titanium alloys its mechanical performance of long-time heat preservation can be serious bad at high temperature
Change, by the way that from alpha phase zone, the upper limit is heated and carries out isothermal annealing and (is warming up to 870 DEG C, keeps the temperature 1-2h, then cold with kiln again
To 550-650 DEG C, 2h is kept the temperature), it not only can protect equipment, saved time and the energy, but also mechanical performance can be made to be restored to normally
Level, especially its plasticity can be greatly improved, and are more advantageous to and use as skeleton.
Detailed description of the invention
Fig. 1 is the sectional view of the Ceramic Balls of built-in alpha+beta titanium alloys skeleton of the invention；
Fig. 2 is the flow diagram of preparation method medium-pressure type manufacturing procedure of the invention；
Fig. 3 is the structural schematic diagram of the episphere mould of preparation method medium-pressure type manufacturing procedure of the invention；
Fig. 4 is the top view of Fig. 3；
Fig. 5 is the schematic diagram of the stepping conveying belt of preparation method medium-pressure type manufacturing procedure of the invention；
Fig. 6 is the cooling temperature curve graph after preparation method high temperature sintering of the invention.
In figure: lower semisphere mould 1, powder 2, conveying pipeline 3, alpha+beta titanium alloys skeleton 4, episphere mould 5, powder lot in bags 6, pressing mold
Machine 7, transfer device 8, Ceramic Balls base 9, stepping conveying belt 10.Wherein episphere mould 5 contains: upper entrance 51, upper interior circular groove
52, lower interior circular groove 53, episphere die cavity 54, press-powder hole 55, closed section 56.
Specific embodiment
The Ceramic Balls of built-in alpha+beta titanium alloys skeleton of the invention, as shown in Figure 1, integral by alpha+beta titanium alloys integral die-cast
Structure, dendroid or herring-bone form structure alpha+beta titanium alloys skeleton and the spheres of ceramic composition outside it is wrapped up, passes through whole pressure
It closes, the mode of high temperature sintering manufactures；The alpha+beta titanium alloys skeleton total volume is the 3-5% of Ceramic Balls volume, longest direction size
Less than the 70% of spheres of ceramic outer diameter；Spheres of ceramic is made of alumina-based ceramic material, formula be aluminium oxide 92-95%,
Di-iron trioxide 0.5-2%, kaolin 0.8-3%, silicon carbide 0.2-2%, titanium dioxide 1.5-2%, titanium carbide 0.8-1%, curing
Molybdenum 0.3-2%, the embodiment of this formula and detailed proportion are discussed in detail in the patent that the present inventor applies before this, no longer superfluous
It states.The present invention is preferably TC6 titanium alloy to alpha+beta titanium alloys, and it is a kind of pole that room temperature intensity is high, specific strength is high, plasticity is high
For excellent high temperature metal material.
The preparation method of the Ceramic Balls of built-in alpha+beta titanium alloys skeleton of the invention, including ingredient, ball milling, mist projection granulating, material
The processes such as storehouse is aging, the polishing of Profile procoess, high temperature sintering, clear powder, finished product are dry, except Profile procoess, high temperature sintering process and this
Inventor is different outer in the patent applied before this, and other process has a detailed description.The pressure used in preparation method of the invention
Type processing equipment is discussed in detail in another invention that the present inventor applies on the same day, because being not belonging to emphasis of the invention, this
Place repeats no more.It is of the invention complete the preparation method is as follows:
A. ingredient: taking all the components by weight percentage, is mixed and stirred for uniformly, mixed material being made；It configures simultaneously
PVA solution matches as PVA: water=(7-10): 100；
B. ball milling:
1) preliminary grinding: preliminary grinding milling apparatus is added in the ingredient taken that step (a) is fallen into a trap, and ballstone and water is added, and ratio is material:
Ball: water=1:2.5:(0.7-0.75), until slurry fineness D90≤8 micron stop grinding, crosses 40 meshes and go out to grind；
2) fine grinding: fine grinding milling apparatus is added in the slurry that step (b1) is obtained, and ballstone and water is added, and ratio is material:
Ball: water=1:(2-3): (0.7-0.75), until stopping grinding behind slurry fineness D50≤1.5 micron, D90≤3.2 micron；
3) mix grinding: being added the PVA solution 9-12% configured in step (a) by weight in the slurry that step (b2) is obtained,
Mix grinding 0.5-1h crosses 150 meshes and goes out to grind, and carries out except iron；
C. mist projection granulating: the PVA solution configured in appropriate step (a) will be added in slurry that step (b3) obtains, and beats
Enter high-order slurry tank, control the hot blast temperature, leaving air temp and pressure difference of spray drying tower, selects suitable spray piece diameter by spraying, into
Row mist projection granulating, pelletizing cross 20 meshes；
D. feed bin is aging: the pelletizing progress that step (c) is obtained is aging, and the aging time is no less than 48h；
E. as shown in Fig. 2,3,4,5, Profile procoess includes:
1) first watering powder: lower semisphere mould 1 is transported to station one by stepping conveying belt 10, and the powder 2 that step d is obtained is led to
It crosses conveying pipeline 3 and is poured into lower semisphere mould 1, loading is the 48-52% of the total dosage of Ceramic Balls；The moisture control of powder 2 0.5% with
Under；
2) skeleton dropping place: being transported to station two for lower semisphere mould 1, then will by placing the device of alpha+beta titanium alloys skeleton 4
The alpha+beta titanium alloys skeleton 4 of the molding dendroid of integral die-cast or herring-bone form is placed into the surface of the powder 2 in lower semisphere mould 1
Heart position；
3) sphere presses full circle: lower semisphere mould 1 is transported to station three；It is the volume and Ceramic Balls in press-powder hole 55 by capacity
The powder lot in bags 6 of the sum of the 55-58% of total dosage is put into the upper entrance 51 of episphere mould 5, then molding press 7 with episphere
The parallel mode of upper entrance 51 in mould 5 enters, and rotates clockwise 90 ° in upper after circular groove 52 reaching, molding press 7 and upper half
Ball mould 5 is fixed in the vertical direction；Subsequent molding press 7 drives 5 downlink of episphere mould, until episphere mould 5 connects with lower semisphere mould 1
Touching, molding press 7 are rotated by 90 ° counterclockwise, and molding press 7 and episphere mould 5 release fixation in the vertical direction；7 downlink of molding press, will
The sack of powder lot in bags 6 crushes, in powder lot in bags 6 episphere die cavity 54 is got by press-powder hole 55;Molding press 7 after
Continuous to come downwards to the lower interior circular groove 53 of arrival, powder lot in bags 6 and alpha+beta titanium alloys skeleton 4, powder 2 are squeezed into one, are formed complete
Ceramic Balls base 9；Molding press 7 continues to rotate after rotating clockwise 90 °, is limited by the closed section 56 of lower interior circular groove 53, molding press 7
Episphere die cavity 54 is driven to rotate, rotation carries out at least 3 circles, and episphere die cavity 54 cuts the extra blank on 9 surface of Ceramic Balls base
It reams；Subsequent molding press 7 lifts, and episphere die cavity 54 is driven to leave Ceramic Balls base 9.
4) ball base shifts: lower semisphere mould 1 being transported to station four, by the transfer device 8 of negative-pressure adsorption-type by Ceramic Balls
Base 9 is transferred to high temperature sagger, sprinkles parting sand.
F. high temperature sintering: the high temperature sagger equipped with Ceramic Balls base (9) that step (e) is obtained is sent into the good tunnel of air-tightness
In kiln；Logical inert gas, 1350-1400 DEG C of high temperature sintering temperature, firing period 28- are kept in tunnel oven during heating
30h；The type of cooling after high temperature sintering is to be cooled to 780-800 DEG C with kiln, then heats to 870 DEG C, keeps the temperature 1-2h, then with
Kiln is cooled to 550-650 DEG C, keeps the temperature 2h, it is air-cooled then to open kiln.
G. clear powder polishing: the parting sand and burr of adherency of the product in sintering process are removed；
H. finished product is dry: being dried to product, obtains finished product.
The foregoing description of the disclosed embodiments, only for can be realized professional and technical personnel in the field or use this
Invention.Various modifications to these embodiments will be readily apparent to those skilled in the art, institute herein
The General Principle of definition can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore,
The present invention will not be limited to the embodiments shown herein, and is to fit to special with principles disclosed herein and novelty
The consistent widest scope of point.
Claims (7)
1. a kind of Ceramic Balls of built-in alpha+beta titanium alloys skeleton, it is characterised in that: the bone of the integral structure made of alpha+beta titanium alloys
Frame and the spheres of ceramic wrapped up outside it form, and are manufactured by way of whole pressing, high temperature sintering；Alpha+beta titanium alloys skeleton it is total
Volume is the 3-5% of Ceramic Balls volume, and longest direction size is less than the 70% of spheres of ceramic outer diameter；Spheres of ceramic uses alumina base
Ceramic material is made.
2. the Ceramic Balls of built-in alpha+beta titanium alloys skeleton according to claim 1, it is characterised in that: the alpha+beta titanium alloys bone
Frame is the molding dendroid of integral die-cast or herring-bone form structure.
3. the Ceramic Balls of built-in alpha+beta titanium alloys skeleton according to claim 2, it is characterised in that: the alpha+beta titanium alloys tool
Body is TC6 titanium alloy.
4. the Ceramic Balls of built-in alpha+beta titanium alloys skeleton according to claim 3, it is characterised in that: the spheres of ceramic
Formula are as follows: aluminium oxide 92-95%, di-iron trioxide 0.5-2%, kaolin 0.8-3%, silicon carbide 0.2-2%, titanium dioxide 1.5-
2%, titanium carbide 0.8-1%, molybdenum disulfide 0.3-2%.
5. the preparation method of the Ceramic Balls of built-in alpha+beta titanium alloys skeleton according to claim 4, it is characterised in that: including
Ingredient, ball milling, mist projection granulating, feed bin be aging, the polishing of Profile procoess, high temperature sintering, clear powder, finished product drying process, and feature exists
In:
A. the Profile procoess process includes following sub- process:
1) first watering powder: lower semisphere mould (1) is transported to station one by stepping conveying belt (10), by the powder of ceramic prilling
(2) it is poured into lower semisphere mould (1) by conveying pipeline (3), the moisture control of powder (2) is below 0.5%；
2) skeleton dropping place: being transported to station two for lower semisphere mould (1), then will by placing the device of alpha+beta titanium alloys skeleton (4)
The alpha+beta titanium alloys skeleton (4) of the molding dendroid of integral die-cast or herring-bone form is placed into the powder (2) in lower semisphere mould (1)
Centre of surface position；
3) sphere presses full circle: lower semisphere mould (1) is transported to station three；Powder lot in bags (6) is put into the upper of episphere mould (5)
Portion's entrance (51), then molding press (7) is entered in the mode parallel with upper entrance (51) in episphere mould (5), is reached
90 ° are rotated clockwise after circular groove (52) in upper, molding press (7) is fixed in the vertical direction with episphere mould (5)；Subsequent molding press
(7) episphere mould (5) downlink is driven, until episphere mould (5) is contacted with lower semisphere mould (1), molding press (7) is rotated by 90 ° counterclockwise,
Molding press (7) and episphere mould (5) release in the vertical direction to be fixed；Molding press (7) downlink, by the sack of powder lot in bags (6)
Crush, in powder lot in bags (6) got into episphere die cavity (54) by press-powder hole (55);Molding press (7) continue traveling downwardly to
Circular groove (53) in lower is reached, powder lot in bags (6) and alpha+beta titanium alloys skeleton (4), powder (2) are squeezed into one, are formed complete
Ceramic Balls base (9)；Molding press (7) continues to rotate after rotating clockwise 90 °, by the limit of the closed section (56) of lower interior circular groove (53)
System, molding press (7) drive episphere die cavity (54) rotation, and rotation carries out at least 3 circles, and episphere die cavity (54) is by Ceramic Balls base
(9) the extra blank on surface machines away；Subsequent molding press (7) lifts, and episphere die cavity (54) is driven to leave Ceramic Balls base (9)；
4) ball base shifts: lower semisphere mould (1) being transported to station four, is transferred to Ceramic Balls base (9) by transfer device (8)
High temperature sagger sprinkles parting sand；
B. the high temperature sintering process specifically: send the high temperature sagger of the Ceramic Balls base (9) obtained equipped with Profile procoess process
Enter in the good tunnel oven of air-tightness；Logical inert gas, high temperature sintering temperature 1350-1400 are kept in tunnel oven during heating
DEG C, firing period 28-30h；The type of cooling after high temperature sintering is to be cooled to 780-800 DEG C with kiln, then heats to 870
DEG C, 1-2h is kept the temperature, then be cooled to 550-650 DEG C with kiln, keeps the temperature 2h, it is air-cooled then to open kiln.
6. the preparation method of the Ceramic Balls of built-in alpha+beta titanium alloys skeleton according to claim 5, it is characterised in that: described
The transfer device (8) used in ball base transfer process is negative-pressure adsorption-type.
7. the preparation method of the Ceramic Balls of built-in alpha+beta titanium alloys skeleton according to claim 6, it is characterised in that: in work
The powder (2) of one filling of position is the 48-52% of the total dosage of Ceramic Balls, and the capacity of the powder lot in bags (6) of station three should be press-powder hole
(55) volume and the total dosage of Ceramic Balls 55-58%'s and.
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| CN109574638A (en) * | 2018-12-29 | 2019-04-05 | 山东天汇研磨耐磨技术开发有限公司 | A kind of high-bond ceramics section and its manufacturing method applying metal-rubber |
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| CN103232229A (en) * | 2013-05-13 | 2013-08-07 | 景德镇百特威尔新材料有限公司 | Ultra-wear-resistant alumina ceramic ball and preparation method thereof |
| CN104845584A (en) * | 2015-01-06 | 2015-08-19 | 朱晖 | Nonmetal grinding medium for cement grinding, and application thereof |
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| CN103232229A (en) * | 2013-05-13 | 2013-08-07 | 景德镇百特威尔新材料有限公司 | Ultra-wear-resistant alumina ceramic ball and preparation method thereof |
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