CN102350722A - Preparation method of ventilatory ceramic stirring rod and material distribution equipment - Google Patents
Preparation method of ventilatory ceramic stirring rod and material distribution equipment Download PDFInfo
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- CN102350722A CN102350722A CN2011101681834A CN201110168183A CN102350722A CN 102350722 A CN102350722 A CN 102350722A CN 2011101681834 A CN2011101681834 A CN 2011101681834A CN 201110168183 A CN201110168183 A CN 201110168183A CN 102350722 A CN102350722 A CN 102350722A
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Abstract
The invention provides a preparation method of a ventilatory ceramic stirring rod and material distribution equipment. The preparation method comprises the steps of ceramic powder preparation, material distribution and forming, demoulding and firing, and is characterized in that alumina powder, calcium carbonate powder and silicon carbide powder are mixed with phenolic resin to manufacture mixed powder with different grain sizes, then the mixed powder is successively and respectively distributed into a ventilatory ceramic stirring rod mould in the material distribution equipment, and by isostatic pressing, demoulding and baking, the ventilatory ceramic stirring rod is manufactured. The ventilatory ceramic stirring rod prepared by adopting the preparation method has the advantages of high bond strength, antioxidation, long service life and even air distribution, can be used repeatedly, and is suitable for industrialized large scale production.
Description
Technical field
The present invention relates to a kind of preparation method and apparatus for distributing of the ceramic stirring rod of ventilating, belong to the porous ceramics preparing technical field.
Background technology
At present, fusion non-ferrous alloy melt homogenization adopts the carbon stirring rod to stir homogenizing usually, because the easy oxidation of carbon stirring rod, its service life is shorter, and it is slow to stir homogenization speed, and production efficiency is low, and cost is higher.
Summary of the invention
The object of the present invention is to provide a kind ofly can overcome above-mentioned defective, adapt to that operating temperature range is wide, the ventilation of function admirable pottery stirring rod and apparatus for distributing.Its technical scheme is:
A kind of preparation method of the ceramic stirring rod of ventilating and apparatus for distributing; Described apparatus for distributing comprises hopper 1, hopper 2, stirring motor 3, powder flow velocity controller 4, powder flow velocity controller 5, propeller-blade 6, powder mixing chamber 7, stirring rod mould, and the preparation method of described ventilation pottery stirring rod may further comprise the steps:
1. feedstock production:
The first step: the calcium carbonate powder, 20～60 μ m silicon carbide powders that with granularity are alumina powder jointed, 0.1～3 μ m of 0.1～5 μ m are by by weight 10～20: 1～3: 77～89 mixed obtains powder 1.
Second step: above-mentioned raw materials powder 1 and phenolic resins are mixed in kolleroang by weight the ratio that is 10: 0.5～1, under 40～80 ℃ temperature, solidify, in flour mill, pulverize then and process the raw meal 2 that average grain diameter is 100～600 μ m.
The 3rd step: the calcium carbonate powder, 0.5～5 μ m silicon carbide powder that with granularity are alumina powder jointed, 0.1～3 μ m of 0.1～5 μ m are by by weight 10～30: 1～3: 67～89 mixed obtains powder 3.
The 4th step: above-mentioned powder 3 is mixed in kolleroang by weight the ratio that is 10: 0.2～0.5 with phenolic resins, under 40～80 ℃ temperature, solidify, in flour mill, pulverize then and process the raw meal 4 that average grain diameter is 5～10 μ m.
2. cloth moulding:
Above-mentioned raw materials powder 2 and raw meal 4 are respectively charged in the hopper 1 and hopper 2 of apparatus for distributing; Again stirring rod mould 8 is placed on the shake table and with the powder mixing chamber 7 of apparatus for distributing and be connected; Powder flow velocity controller 4 is transferred to maximum range; Powder flow velocity controller 5 is closed simultaneously; Vibration on Start-up platform, agitator 3; Below raw meal 2 is full of stirring rod mould 8 right angle electrical, begin evenly to reduce the flow of powder flow velocity controller 4 during 1/3rd places, open the flows that powder flow velocity controller 5 evenly increases raw meal 4 simultaneously, make raw meal 2 and raw meal 4 powder mixing chamber 7 in agitator 3 drive propeller-blades 6 time the abundant down mixing of powder stirring action; Powder flow velocity controller 4 is just closed when the mixed powder of raw meal 2 and 4 is full of more than stirring rod mould 8 right angle electrical 1/4th places; Simultaneously powder flow velocity controller 5 evenly increases to the maximum stream flow that just reaches raw meal 4, and this moment is from 1/3rd forming the Gradient distribution of raw meal 2 to 4 two kinds of raw meal of raw meal to 1/4th places more than stirring rod mould 8 right angle electrical below stirring rod mould 8 right angle electrical, till raw meal 4 is full of mould; Then the port sealing of stirring rod mould 8 is put into the pressure forming of isostatic pressing machine 50～200Mpa, processed the ceramic stirring rod base substrate of ventilation after the demoulding.
3. burn till
Ventilation ceramic stirring rod base substrate reducing atmosphere under 1350 ℃～1550 ℃ temperature fired made the ceramic stirring rod of ventilation in 2-4 hour.
The present invention compared with prior art, its advantage is:
1, the ventilation pottery stirring rod of the present invention's preparation is made up of two parts earthenware; Part under melt liquid level is a porous ceramic pipe; Is the ceramic of compact pipe at liquid level with top, and the limit is stirred and just fed inert gas in whipping process, discharges through bottom porous tube wall; Form the bubble agitation melt, can make the quick homogenizing of melt;
2, the ventilation pottery stirring rod of the present invention's preparation to 1/4th place's raw meal 2 and raw meal 4 distribution gradient more than the right angle electrical, has been eliminated raw meal 2 and the interface that raw meal 4 forms at 1/3rd places below the right angle electrical, has improved bond strength and service life.
3, because the ventilation that this method makes pottery stirring rod antioxygenic property is high, and be more than 10 times of carbon stirring rod its service life, melt homogenization speed improves more than 5 times.
Description of drawings
Fig. 1 is the structural representation of the used apparatus for distributing embodiment of the present invention;
Among the figure: 1, hopper; 2, hopper; 3, stirring motor; 4, powder flow velocity controller; 5, powder flow velocity controller; 6, propeller-blade; 7, powder mixing chamber; 8, stirring rod mould
The specific embodiment
In apparatus for distributing shown in Figure 1; Hopper 1 fills varigrained raw meal respectively with hopper 2; Raw meal flows to powder mixing chamber 7 through powder flow velocity controller 4 and 5; And be distributed in the stirring rod mould 8 after under the effect of stirring motor 3 driving propeller-blades 6, fully mixing, then the port sealing of stirring rod mould 8 is put into the isostatic pressing machine moulding.
1, feedstock production:
The first step: the calcium carbonate powder, 20 μ m silicon carbide powders that with granularity are alumina powder jointed, the 0.1 μ m of 0.1 μ m obtain powder 1 by 10: 1: 89 mixed by weight.
Second step: above-mentioned raw materials powder 1 and phenolic resins are mixed in kolleroang by weight the ratio that is 10: 0.5, under 40 ℃ temperature, solidify, in flour mill, pulverize then and process the raw meal 2 that average grain diameter is 100 μ m.
The 3rd step: the calcium carbonate powder, 0.5 μ m silicon carbide powder that with granularity are alumina powder jointed, the 0.1 μ m of 0.1 μ m obtain powder 3 by 10: 1: 89 mixed by weight.
The 4th step: above-mentioned powder 3 is mixed in kolleroang by weight the ratio that is 10: 0.2 with phenolic resins, under 40 ℃ temperature, solidify, in flour mill, pulverize then and process the raw meal 4 that average grain diameter is 5 μ m.
2, cloth moulding:
Above-mentioned raw materials powder 2 and raw meal 4 are respectively charged in the hopper 1 and hopper 2 of apparatus for distributing; Again stirring rod mould 8 is placed on the shake table and with the powder mixing chamber 7 of apparatus for distributing and be connected; Powder flow velocity controller 4 is transferred to maximum range; Powder flow velocity controller 5 is closed simultaneously; Vibration on Start-up platform, agitator 3; Below raw meal 2 is full of stirring rod mould 8 right angle electrical, begin evenly to reduce the flow of powder flow velocity controller 4 during 1/3rd places, open the flows that powder flow velocity controller 5 evenly increases raw meal 4 simultaneously, make raw meal 2 and raw meal 4 powder mixing chamber 7 in, drive the abundant down mixing of propeller-blades 6 stirring actions at agitator 3; Powder flow velocity controller 4 is just closed when the mixed powder of raw meal 2 and 4 is full of more than stirring rod mould 8 right angle electrical 1/4th places; Simultaneously powder flow velocity controller 5 evenly increases to the maximum stream flow that just reaches raw meal 4, and this moment is from 1/3rd forming the Gradient distribution of raw meal 2 to 4 two kinds of raw meal of raw meal to 1/4th places more than stirring rod mould 8 right angle electrical below stirring rod mould 8 right angle electrical, till raw meal 4 is full of mould; Then the port sealing of stirring rod mould 8 is put into the pressure forming of isostatic pressing machine 50Mpa, processed the ceramic stirring rod base substrate of ventilation after the demoulding.
3, burn till
Ventilation ceramic stirring rod base substrate reducing atmosphere under 1350 ℃ temperature fired made the ceramic stirring rod of ventilation in 2 hours.
The purity of testing used proportion material is technical pure.
Obtain the ventilation ceramic stirring rod compressive resistance be 140MPa., 900 ℃ of heatproofs.
1, feedstock production:
The first step: the calcium carbonate powder, 35 μ m silicon carbide powders that with granularity are alumina powder jointed, the 1.5 μ m of 2 μ m obtain powder 1 by 15: 1.5: 83 mixed by weight.
Second step: above-mentioned raw materials powder 1 and phenolic resins are mixed in kolleroang by weight the ratio that is 10: 0.8, under 60 ℃ temperature, solidify, in flour mill, pulverize then and process the raw meal 2 that average grain diameter is 350 μ m.
The 3rd step: the calcium carbonate powder, 3 μ m silicon carbide powders that with granularity are alumina powder jointed, the 1.5 μ m of 3 μ m obtain powder 3 by 20: 1.5: 77 mixed by weight.
The 4th step: above-mentioned powder 3 is mixed in kolleroang by weight the ratio that is 10: 0.3 with phenolic resins, under 60 ℃ temperature, solidify, in flour mill, pulverize then and process the raw meal 4 that average grain diameter is 8 μ m.
2, cloth moulding:
Above-mentioned raw materials powder 2 and raw meal 4 are respectively charged in the hopper 1 and hopper 2 of apparatus for distributing; Again stirring rod mould 8 is placed on the shake table and with the powder mixing chamber 7 of apparatus for distributing and be connected; Powder flow velocity controller 4 is transferred to maximum range; Powder flow velocity controller 5 is closed simultaneously; Vibration on Start-up platform, agitator 3; Below raw meal 2 is full of stirring rod mould 8 right angle electrical, begin evenly to reduce the flow of powder flow velocity controller 4 during 1/3rd places, open the flows that powder flow velocity controller 5 evenly increases raw meal 4 simultaneously, make raw meal 2 and raw meal 4 powder mixing chamber 7 in, drive the abundant down mixing of propeller-blades 6 stirring actions at agitator 3; Powder flow velocity controller 4 is just closed when the mixed powder of raw meal 2 and 4 is full of more than stirring rod mould 8 right angle electrical 1/4th places; Simultaneously powder flow velocity controller 5 evenly increases to the maximum stream flow that just reaches raw meal 4, and this moment is from 1/3rd forming the Gradient distribution of raw meal 2 to 4 two kinds of raw meal of raw meal to 1/4th places more than stirring rod mould 8 right angle electrical below stirring rod mould 8 right angle electrical, till raw meal 4 is full of mould; Then the port sealing of stirring rod mould 8 is put into the pressure forming of isostatic pressing machine 120Mpa, processed the ceramic stirring rod base substrate of ventilation after the demoulding.
3, burn till
Ventilation ceramic stirring rod base substrate reducing atmosphere under 1450 ℃ temperature fired made the ceramic stirring rod of ventilation in 3 hours.
The purity of testing used proportion material is technical pure.
Obtain the ventilation ceramic stirring rod compressive resistance be 120MPa., 1000 ℃ of heatproofs.
1, feedstock production:
The first step: the calcium carbonate powder, 60 μ m silicon carbide powders that with granularity are alumina powder jointed, the 3 μ m of 5 μ m obtain powder 1 by 20: 3: 89 mixed by weight.
Second step: above-mentioned raw materials powder 1 and phenolic resins are mixed in kolleroang by weight the ratio that is 10: 1, under 80 ℃ temperature, solidify, in flour mill, pulverize then and process the raw meal 2 that average grain diameter is 600 μ m.
The 3rd step: the calcium carbonate powder, 5 μ m silicon carbide powders that with granularity are alumina powder jointed, the 3 μ m of 5 μ m obtain powder 3 by 30: 3: 89 mixed by weight.
The 4th step: above-mentioned powder 3 is mixed in kolleroang by weight the ratio that is 10: 0.5 with phenolic resins, under 80 ℃ temperature, solidify, in flour mill, pulverize then and process the raw meal 4 that average grain diameter is 10 μ m.
2, cloth moulding:
Above-mentioned raw materials powder 2 and raw meal 4 are respectively charged in the hopper 1 and hopper 2 of apparatus for distributing; Again stirring rod mould 8 is placed on the shake table and with the powder mixing chamber 7 of apparatus for distributing and be connected; Powder flow velocity controller 4 is transferred to maximum range; Powder flow velocity controller 5 is closed simultaneously; Vibration on Start-up platform, agitator 3; Below raw meal 2 is full of stirring rod mould 8 right angle electrical, begin evenly to reduce the flow of powder flow velocity controller 4 during 1/3rd places, open the flows that powder flow velocity controller 5 evenly increases raw meal 4 simultaneously, make raw meal 2 and raw meal 4 powder mixing chamber 7 in, drive the abundant down mixing of propeller-blades 6 stirring actions at agitator 3; Powder flow velocity controller 4 is just closed when the mixed powder of raw meal 2 and 4 is full of more than stirring rod mould 8 right angle electrical 1/4th places; Simultaneously powder flow velocity controller 5 evenly increases to the maximum stream flow that just reaches raw meal 4, and this moment is from 1/3rd forming the Gradient distribution of raw meal 2 to 4 two kinds of raw meal of raw meal to 1/4th places more than stirring rod mould 8 right angle electrical below stirring rod mould 8 right angle electrical, till raw meal 4 is full of mould; Then the port sealing of stirring rod mould 8 is put into the pressure forming of isostatic pressing machine 200Mpa, processed the ceramic stirring rod base substrate of ventilation after the demoulding.
3, burn till
Ventilation ceramic stirring rod base substrate reducing atmosphere under 1550 ℃ temperature fired made the ceramic stirring rod of ventilation in 4 hours.
The purity of testing used proportion material is technical pure.
Obtain the ventilation ceramic stirring rod compressive resistance be 80MPa., 1000 ℃ of heatproofs.
Claims (1)
1. the preparation method of the ceramic stirring rod of ventilating and apparatus for distributing; It is characterized in that: described apparatus for distributing comprises: hopper 1, hopper 2, stirring motor 3, powder flow velocity controller 4, powder flow velocity controller 5, propeller-blade 6, powder mixing chamber 7, stirring rod mould, and the preparation method of described ventilation pottery stirring rod may further comprise the steps:
1. feedstock production:
The first step: the calcium carbonate powder, 20～60 μ m silicon carbide powders that with granularity are alumina powder jointed, 0.1～3 μ m of 0.1～5 μ m are by by weight 10～20: 1～3: 77～89 mixed obtains raw meal 1.
Second step: above-mentioned raw materials powder 1 and phenolic resins are mixed in kolleroang by weight the ratio that is 10: 0.5～1, under 40～80 ℃ temperature, solidify, in flour mill, pulverize then and process the raw meal 2 that average grain diameter is 100～600 μ m.
The 3rd step: the calcium carbonate powder, 0.5～5 μ m silicon carbide powder that with granularity are alumina powder jointed, 0.1～3 μ m of 0.1～5 μ m are by by weight 10～30: 1～3: 67～89 mixed obtains raw meal 3.
The 4th step: above-mentioned raw materials powder 3 and phenolic resins are mixed in kolleroang by weight the ratio that is 10: 0.2～0.5, under 40～80 ℃ temperature, solidify, in flour mill, pulverize then and process the raw meal 4 that average grain diameter is 5～10 μ m.
2. cloth moulding:
Above-mentioned raw materials powder 2 and raw meal 4 are respectively charged in the hopper 1 and hopper 2 of apparatus for distributing; Again stirring rod mould 8 is placed on the shake table and with the powder mixing chamber 7 of apparatus for distributing and be connected; Powder flow velocity controller 4 is transferred to maximum range; Powder flow velocity controller 5 is closed; Vibration on Start-up platform, agitator 3 begin evenly to reduce the flow of powder flow velocity controller 4 during 1/3rd places below raw meal 2 is full of stirring rod mould 8 right angle electrical, open the flows that powder flow velocity controller 5 evenly increases raw meal 4 simultaneously; Raw meal 2 is driven under propeller-blade 6 stirring actions with raw meal 4 agitator 3 in powder mixing chamber 7 fully mixes; Powder flow velocity controller 4 is just closed when the mixed powder of raw meal 2 and 4 is full of more than stirring rod mould 8 right angle electrical 1/4th places, and powder flow velocity controller 5 evenly increases to the maximum stream flow that just reaches raw meal 4 simultaneously, till raw meal 4 is full of mould; Then the port sealing of stirring rod mould 8 is put into the pressure forming of isostatic pressing machine 50～200Mpa, processed the ceramic stirring rod base substrate of ventilation after the demoulding.
3. burn till
Ventilation ceramic stirring rod base substrate reducing atmosphere under 1350 ℃～1550 ℃ temperature fired made the ceramic stirring rod of ventilation in 2-4 hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110168183 CN102350722B (en) | 2011-06-22 | 2011-06-22 | Preparation method of ventilatory ceramic stirring rod |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110168183 CN102350722B (en) | 2011-06-22 | 2011-06-22 | Preparation method of ventilatory ceramic stirring rod |
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| CN102350722A true CN102350722A (en) | 2012-02-15 |
| CN102350722B CN102350722B (en) | 2013-08-21 |
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| CN 201110168183 Expired - Fee Related CN102350722B (en) | 2011-06-22 | 2011-06-22 | Preparation method of ventilatory ceramic stirring rod |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109336611A (en) * | 2018-12-20 | 2019-02-15 | 山东宝纳新材料有限公司 | A kind of pressureless sintering silicon carbide nozzle and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101503296A (en) * | 2009-03-26 | 2009-08-12 | 洛阳北苑特种陶瓷有限公司 | Silicon carbide ceramic agitator head |
| WO2010000001A1 (en) * | 2008-07-02 | 2010-01-07 | Karen Gasparyan | Bar clamping and tightening tool |
| WO2010074165A1 (en) * | 2008-12-24 | 2010-07-01 | 国立大学法人大阪大学 | Metal material machining method, and structure and rotary tool machined using metal material machining method |
| CN201573279U (en) * | 2009-12-11 | 2010-09-08 | 佛山市南海金刚新材料有限公司 | Special vertical mixer for ceramic rolling rod blanks |
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2011
- 2011-06-22 CN CN 201110168183 patent/CN102350722B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010000001A1 (en) * | 2008-07-02 | 2010-01-07 | Karen Gasparyan | Bar clamping and tightening tool |
| WO2010074165A1 (en) * | 2008-12-24 | 2010-07-01 | 国立大学法人大阪大学 | Metal material machining method, and structure and rotary tool machined using metal material machining method |
| CN101503296A (en) * | 2009-03-26 | 2009-08-12 | 洛阳北苑特种陶瓷有限公司 | Silicon carbide ceramic agitator head |
| CN201573279U (en) * | 2009-12-11 | 2010-09-08 | 佛山市南海金刚新材料有限公司 | Special vertical mixer for ceramic rolling rod blanks |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109336611A (en) * | 2018-12-20 | 2019-02-15 | 山东宝纳新材料有限公司 | A kind of pressureless sintering silicon carbide nozzle and preparation method thereof |
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