CN106220151B - A kind of built-in pure titanium or the Ceramic Balls of alpha titanium alloy skeleton and preparation method thereof - Google Patents
A kind of built-in pure titanium or the Ceramic Balls of alpha titanium alloy skeleton and preparation method thereof Download PDFInfo
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- CN106220151B CN106220151B CN201610650374.7A CN201610650374A CN106220151B CN 106220151 B CN106220151 B CN 106220151B CN 201610650374 A CN201610650374 A CN 201610650374A CN 106220151 B CN106220151 B CN 106220151B
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Abstract
A kind of Ceramic Balls of built-in pure titanium or alpha titanium alloy skeleton, the integral structure made of pure titanium or alpha titanium alloy, spheres of ceramic that surface carries out the skeleton of plating tungsten-bast alloy processing and wraps up outside it form, manufactured by way of whole pressing, high temperature sintering；The pure titanium or alpha titanium alloy skeleton total volume are 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 raw material preparation, 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 pure titanium or alpha titanium alloy 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 pure titanium or alpha titanium alloy skeleton Ceramic Balls industrialized production.
Description
Technical field
The present invention relates to the Ceramic Balls of titanium pure built in cement manufacture field more particularly to one kind or alpha titanium alloy skeleton and its
Preparation 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.Many countries all recognize the importance of titanium alloy material in the world, carry out in succession to it
Research and development, and be applied.It is good, heat-resisting using the intensity height of the refractory metals such as pure titanium, alpha titanium alloy, corrosion resistance
Property it is high the advantages that, using the method for being implanted into pure titanium or alpha titanium alloy skeleton, the globality of Ceramic Balls can be made more preferable, and by
To impact when impact force can be shared by skeleton, it is non-breakable.
Pure titanium is implanted into Ceramic Balls or alpha titanium alloy skeleton 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.In the invention that the present inventor applies on the same day, it is related to
The Ceramic Balls and preparation method of built-in pure titanium or alpha titanium alloy skeleton, skeleton be exposed pure titanium or alpha titanium alloy, at high temperature
It is easy to happen oxidation or hydrogen abstraction reaction, although being connected with inert gas in kiln, effect is not ideal enough always.
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, bone
Frame is not susceptible to the built-in pure titanium of oxidation or hydrogen abstraction reaction or the Ceramic Balls of alpha titanium alloy skeleton at high temperature and is able to achieve its industry
The preparation method that metaplasia produces.
To achieve the goals above, the invention adopts the following technical scheme: the pottery of pure titanium or alpha titanium alloy skeleton built in one kind
Porcelain ball, the integral structure made of pure titanium or alpha titanium alloy, surface carry out plating tungsten-bast alloy processing skeleton and wrap up outside it
Spheres of ceramic composition, whole pressing, manufacture by way of high temperature sintering；The pure titanium or alpha titanium alloy skeleton total volume are
The 3-5% of Ceramic Balls volume, longest direction size are less than the 70% of spheres of ceramic outer diameter；Spheres of ceramic uses alumina-based ceramic material
Material is made.
The Ceramic Balls of above-mentioned built-in pure titanium or alpha titanium alloy skeleton, in which: the pure titanium or alpha titanium alloy skeleton is integrally
The dendroid or herring-bone form structure of die cast.
The Ceramic Balls of above-mentioned built-in pure titanium or alpha titanium alloy skeleton, in which: the pure titanium or alpha titanium alloy skeleton surface
Tungsten-bast alloy is electroplated with a thickness of 0.25-0.3mm.
The Ceramic Balls of above-mentioned built-in pure titanium or alpha titanium alloy 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%, molybdenum disulfide 0.3-2%.
The preparation method of the Ceramic Balls of above-mentioned built-in pure titanium or alpha titanium alloy skeleton, including it is raw material preparation, ball milling, spraying
It is granulated, feed bin is aging, the polishing of Profile procoess, high temperature sintering, 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 passes through the pure titanium of placement or the device of alpha titanium alloy skeleton
The pure titanium or alpha titanium alloy skeleton of the molding dendroid of integral die-cast or herring-bone form are placed into the surface of the powder in lower semisphere mould
Center；
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 is squeezed into one with pure titanium or alpha titanium alloy skeleton, powder, is formed complete
Ceramic Balls 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
The rotation of episphere die cavity, rotation carry out at least 3 circles, and episphere die cavity machines away the extra blank on Ceramic Balls base surface；Then
Molding press 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: send the high temperature sagger of the Ceramic Balls base obtained equipped with Profile procoess process
Enter in the good high temperature kiln of air-tightness；Logical inert gas, high temperature sintering temperature 1350-1500 are kept in high temperature kiln during heating
DEG C, firing period 26-36h；The type of cooling after high temperature sintering is to be cooled to 1050-1100 DEG C with kiln, is then sent into kiln
Wind accelerates cooling.
The preparation method of the Ceramic Balls of above-mentioned built-in pure titanium or alpha titanium alloy skeleton, in which: in the ball base transfer process
The transfer device used is negative-pressure adsorption-type.
The preparation method of the Ceramic Balls of above-mentioned built-in pure titanium or alpha titanium alloy skeleton, in which: in the powder that station one is filled
For the 48-52% of the total dosage of Ceramic Balls, the capacity of the powder lot in bags of station three should be the volume and the total dosage of Ceramic Balls in press-powder hole
The sum of 55-58%.
The preparation method of the Ceramic Balls of above-mentioned built-in pure titanium or alpha titanium alloy skeleton, in which: in the high temperature sintering process
High temperature kiln be tunnel oven, temperature be 1350-1500 DEG C, firing period 26-30h.
The preparation method of the Ceramic Balls of above-mentioned built-in pure titanium or alpha titanium alloy skeleton, in which: in the high temperature sintering process
High temperature kiln be shuttle kiln, temperature be 1450-1500 DEG C, firing period 35-36h.
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 at present it is integral sintered, without built-in pure titanium or alpha titanium alloy bone
For the Ceramic Balls of frame, the Ceramic Balls of built-in pure titanium of the invention or alpha titanium alloy skeleton are using the pure titanium of implantation or alpha titanium alloy skeleton
Method, pure titanium or alpha titanium alloy skeleton formed using integral die-cast, skeleton good integrity and is easy to implement industrialized production；It is pure
Titanium or the processing of the plating tungsten-bast alloy on alpha titanium alloy skeleton surface, tungsten-bast alloy fusing point is high, and thickness reaches 0.25-0.3mm,
It is enough not melt at high temperature, and can guarantee that pure titanium or alpha titanium alloy skeleton are not oxidized or inhale hydrogen, while tungsten metal at high temperature
It is stronger with the affinity of ceramics as the common used material of ceramic material metallization, the knot between titanium alloy and ceramics can be promoted
It closes；Dendroid or herring-bone form structure can guarantee that it combines closely with ceramics, to keep Ceramic Balls globality more preferable；Size is suitable
In, it is convenient not only to guarantee Profile procoess process, but also can guarantee that the globality of Ceramic Balls is more preferable.The Ceramic Balls that the present invention makes were both
The advantages of maintaining traditional ceramics ball, but the intensity, plasticity, toughness that can fully play pure titanium or alpha titanium alloy are high, corrosion resistance
The high advantage of good, heat resistance, high formability, specific strength, in conjunction with ceramics itself high abrasion, high rigidity the features such as, and by
To impact when impact force can be shared by skeleton, it is non-breakable, avoid starting, emergency stop, throw fall etc. impact Ceramic Balls are made
At it is broken；And itself is (9.41~10.03) × 10 because of the thermal expansion coefficient of titanium-6/ DEG C, during the sintering process with ceramics
Expansion rate it 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 pure titanium or alpha titanium alloy skeleton in the present invention, immediate existing skill
Art is preparation method of the present inventor in the more parts of Ceramic Balls applied before this, and difference is, the present invention is because in Ceramic Balls
Built-in pure titanium or alpha titanium alloy skeleton, use conventional methods cannot achieve implantation skeleton at all, therefore Profile procoess process uses
Sub- process, the advantages such as first watering powder, skeleton dropping place, sphere pressing full circle, the transfer of ball base are that the pressing of ball base is greater than because of raw material
Demand, compactness 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-type transfer equipment avoids the damage in transfer process to Ceramic Balls.Many and diverse procedure is extremely letter, makes entire die mould
Manufacturing procedure 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 pure titanium or alpha titanium alloy skeleton have very strong chemical activity at high temperature, be very easy to absorb hydrogen, oxygen,
The impurity such as nitrogen, carbon, so being passed through inert gas such as argon gas in high temperature sintering process, the type of cooling is using first with kiln after sintering
It is cooled to 1050-1100 DEG C, the then air-supply acceleration cooling into kiln, is because cooling of directly blowing under high temperature may make ceramic temperature
Cataclysm cracking, so being first cooled to 1050-1100 DEG C with kiln, it is to close pure titanium or α titanium that then into kiln, air-supply, which accelerates cooling,
Golden skeleton is quickly cooled down from β phase region, to obtain more acicular α tissue, makes pure titanium or alpha titanium alloy skeleton is with higher holds
Long intensity, creep strength and fracture toughness.
Detailed description of the invention
Fig. 1 is the sectional view of the Ceramic Balls of built-in pure titanium or alpha titanium alloy 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.
In figure: lower semisphere mould 1, powder 2, conveying pipeline 3, pure titanium or alpha titanium alloy skeleton 4, episphere mould 5, powder lot in bags 6,
Molding press 7, transfer device 8, Ceramic Balls base 9, stepping conveying belt 10.Wherein episphere mould 5 contains: upper entrance 51, it is upper in
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 pure titanium or alpha titanium alloy skeleton of the invention, as shown in Figure 1, by pure titanium or alpha titanium alloy skeleton and
The spheres of ceramic composition outside it is wrapped up, is manufactured by way of whole pressing, high temperature sintering；Wherein pure titanium or alpha titanium alloy skeleton
For pure titanium or the integral dendroid or herring-bone form structure of alpha titanium alloy integral die-cast, and carried out at plating tungsten-bast alloy on surface
Reason, thickness of coating 0.25-0.3mm；The pure titanium or alpha titanium alloy skeleton total volume are the 3-5% of Ceramic Balls volume, longest direction
Size is less than the 70% of spheres of ceramic outer diameter；Spheres of ceramic is made of alumina-based ceramic material, and formula is 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 embodiment of this formula and detailed proportion are discussed in detail in the patent that the present inventor applies before this, no
It repeats again.
The preparation method of the Ceramic Balls of built-in pure titanium or alpha titanium alloy skeleton of the invention, including raw material preparation, ball milling, spray
Mist is granulated, feed bin is aging, the polishing of Profile procoess, high temperature sintering, clear powder, finished product drying process, removes Profile procoess, high temperature sintering work
Sequence is different outer in the patent applied before this from the present inventor, and other process has a detailed description.It is used in preparation method of the invention
To Profile procoess equipment be discussed in detail in another invention that the present inventor applies on the same day, because being not belonging to weight of the invention
Point, details are not described herein again.It is of the invention complete the preparation method is as follows:
A. raw material preparation:
1) ceramic batch: taking all the components by weight percentage, is mixed and stirred for uniformly, mixed material being made；Simultaneously
PVA solution is configured, is matched as PVA: water=(7-10): 100；
2) skeleton manufactures: pure titanium or the integral dendroid or herring-bone form structure of alpha titanium alloy integral die-cast, and surface into
Row plating tungsten-bast alloy processing, thickness of coating 0.25-0.3mm.Skeleton manufacture and plating tungsten-bast alloy are the prior art, this is specially
Benefit repeats no more.
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 passes through the pure titanium of placement or the dress of alpha titanium alloy skeleton 4
Set the powder 2 that pure titanium or alpha titanium alloy skeleton 4 by the molding dendroid of integral die-cast or herring-bone form are placed into lower semisphere mould 1
Centre of surface 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 pure titanium or alpha titanium alloy skeleton 4, powder 2 are squeezed into one, have been formed
Whole 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, pressure
Mould machine 7 drives episphere die cavity 54 to rotate, and rotation carries out at least 3 circles, and episphere die cavity 54 is by the extra base on 9 surface of Ceramic Balls base
Material 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, 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 high temperature of air-tightness
In kiln；Logical inert gas, 1350-1500 DEG C of high temperature sintering temperature, firing period 26- are kept in high temperature kiln during heating
36h；The type of cooling after high temperature sintering is to be cooled to 1050-1100 DEG C with kiln, and then into kiln, air-supply accelerates cooling；
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.
Because there are two types of the high temperature kilns that the high temperature sintering process of ceramics generallys use: tunnel oven and shuttle kiln, agglomerant
Skill parameter is different；According to tunnel oven, sintering temperature is 1350-1500 DEG C, firing period 26-30h；According to shuttle kiln,
Temperature is 1450-1500 DEG C, firing period 35-36h.
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 (9)
1. the Ceramic Balls of pure titanium or alpha titanium alloy skeleton built in one kind, it is characterised in that: the one made of pure titanium or alpha titanium alloy
Structure, surface carry out plating tungsten-bast alloy processing skeleton and wrap up outside it spheres of ceramic composition, pass through whole pressing, height
The mode of temperature sintering manufactures；The pure titanium or alpha titanium alloy skeleton total volume are the 3-5% of Ceramic Balls volume, and longest direction size is small
In the 70% of spheres of ceramic outer diameter；Spheres of ceramic is made of alumina-based ceramic material.
2. the Ceramic Balls of built-in pure titanium according to claim 1 or alpha titanium alloy skeleton, it is characterised in that: the pure titanium or α
Titanium alloy framework is the molding dendroid of integral die-cast or herring-bone form structure.
3. the Ceramic Balls of built-in pure titanium according to claim 1 or 2 or alpha titanium alloy skeleton, it is characterised in that: the pure titanium
Or the plating tungsten-bast alloy on alpha titanium alloy skeleton surface is with a thickness of 0.25-0.3mm.
4. the Ceramic Balls of built-in pure titanium according to claim 3 or alpha titanium alloy skeleton, it is characterised in that: the Ceramic Balls
The formula of body 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 pure titanium or alpha titanium alloy skeleton, feature exist built in one kind according to claim 4
In: including raw material preparation, ball milling, mist projection granulating, feed bin be aging, Profile procoess, high temperature sintering, the polishing of clear powder, finished product back tender
Sequence, it is characterised in that:
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 passes through the pure titanium of placement or the dress of alpha titanium alloy skeleton (4)
Set the powder that pure titanium or alpha titanium alloy skeleton (4) by the molding dendroid of integral die-cast or herring-bone form are placed into lower semisphere mould (1)
Expect the centre of surface position of (2)；
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
It reaches circular groove (53), powder lot in bags (6) and pure titanium or alpha titanium alloy skeleton (4), powder (2) in lower and is squeezed into one, formed
Whole Ceramic Balls base (9)；Molding press (7) continues to rotate after rotating clockwise 90 °, by the closed section (56) of lower interior circular groove (53)
Limitation, 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, Ceramic Balls base (9) is transferred to height by transfer device (8)
Warm saggar, 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 high temperature kiln of air-tightness；Logical inert gas, high temperature sintering temperature 1350-1500 are kept in high temperature kiln during heating
DEG C, firing period 26-36h；The type of cooling after high temperature sintering is to be cooled to 1050-1100 DEG C with kiln, is then sent into kiln
Wind accelerates cooling.
6. the preparation method of the Ceramic Balls of built-in pure titanium according to claim 5 or alpha titanium alloy skeleton, it is characterised in that:
The transfer device (8) used in the ball base transfer process is negative-pressure adsorption-type.
7. the preparation method of the Ceramic Balls of built-in pure titanium according to claim 6 or alpha titanium alloy skeleton, it is characterised in that:
In the 48-52% that the powder (2) that station one is filled is the total dosage of Ceramic Balls, the capacity of the powder lot in bags (6) of station three should be press-powder
The volume in hole (55) and the total dosage of Ceramic Balls 55-58%'s and.
8. the preparation method of the Ceramic Balls of built-in pure titanium according to claim 7 or alpha titanium alloy skeleton, it is characterised in that:
High temperature kiln in the high temperature sintering process is tunnel oven, and temperature is 1350-1500 DEG C, firing period 26-30h.
9. the preparation method of the Ceramic Balls of built-in pure titanium according to claim 7 or alpha titanium alloy skeleton, it is characterised in that:
High temperature kiln in the high temperature sintering process is shuttle kiln, and temperature is 1450-1500 DEG C, firing period 35-36h.
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| CN103113112A (en) * | 2013-02-04 | 2013-05-22 | 西安交通大学 | Preparation method of metal toughened ceramic-based composite material turbine blade |
| 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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| CN103113112A (en) * | 2013-02-04 | 2013-05-22 | 西安交通大学 | Preparation method of metal toughened ceramic-based composite material turbine blade |
| 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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