CN86100068B - Spherical heatproof riser cover - Google Patents
Spherical heatproof riser cover Download PDFInfo
- Publication number
- CN86100068B CN86100068B CN86100068A CN86100068A CN86100068B CN 86100068 B CN86100068 B CN 86100068B CN 86100068 A CN86100068 A CN 86100068A CN 86100068 A CN86100068 A CN 86100068A CN 86100068 B CN86100068 B CN 86100068B
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- CN
- China
- Prior art keywords
- spherical
- heat insulation
- heatproof
- riser sleeve
- riser
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Mold Materials And Core Materials (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
The present invention relates to a spherical heat insulation riser sleeve for casting industry. The horizontal parting surface is provided with a pair of concave convex grooves; when the upper half of a heat insulation shell is manufactured, a convex pressing ring is arranged on an upper mould; when the lower half of the heat insulation shell is manufactured, the convex pressing ring is arranged on a lower mould; a round angle R is arranged on the cutting diameter part. The heat-insulating materials of the spherical heat insulation riser sleeve are made from refractory fiber, paper, phenolic resin, urotropine, magnesite sand powder and water. The spherical heat insulation riser sleeve has the advantages that the manufacture shapes are simple, 10 to 15% of casting materials are saved, the cutting is easily operated, the energy is saved, and the refractability is as high as 1790C; the spherical heat insulation riser sleeve is suitable for specialized mass production for the casting industry.
Description
The invention belongs to the foundry industry spherical heatproof riser cover.
Cylindrical rising head moulding is simple, is convenient to be adopted by people, but the waste material and the cutting energy.Spherical feeder have minimum heat-delivery surface and feeding efficiency the highest, can reduce simultaneously the volume of rising head.Someone once used spherical polystyrene foam rising head to be assemblied on the apperance of foundry goods; Someone uses two hemisphere core boxes, fills out compound manual smashing tightly in the hemisphere core box, and it is bonding then two halves to be applied mechanically natural gum; Someone cuts position, footpath refractoriness in order to improve, and adopts the method for swabbing, but still can not guarantee to cut the position, footpath in high temperature not burning more than 1600 ℃.Above-mentioned several spherical heatproof riser moulding complexity, cost height, refractoriness are low, all can not realize a large amount of productions.
The objective of the invention is to, provide a kind of horizontal parting, moulding simple, without adhesive bond, a pair of concavo-convex circumferential projection that matches and groove are being set in upper and lower hemisphere inboard, upper and lower half cover is linked together, refractoriness height, cost are low, and can mass-produced spherical heatproof riser cover.
Spherical heatproof riser cover of the present invention is made with aluminum alloy mould.First ball cover (2) has circumferential groove along horizontal parting face inboard, gas outlet (3) is arranged at first ball cover top, lower semisphere has the circumferential projection that matches with first ball cover on the horizontal parting face, groove matches with projection, and guarantee that its diametrical clearance is 1.5～2mm, the short transverse gap is zero, and tongue and groove height 2.5～3mm gets final product.The minimum 4mm of tongue and groove width, and widen gradually with the big I of die size series, the wideest 10mm can meet the demands.The tongue and groove gradient is 1: 3.Shell thickness is generally got 1/10th of rising head diameter and is advisable.
Do not cause foundry goods and rising head junction overheated in order to make second insulation cladding cut position, footpath (4), produce shrinkage defect, cutting footpath position system one garden angle R, make R more than or equal to 3mm, maximum must not be greater than 10mm.
Making the insulation material of this spherical heatproof riser cover can manufacture according to following prescription: refractory fibre 7.5～8.5%, paper 4～6%, phenolic resins (2123) 3.5～4.5%, urotropine be account for phenolic resins weight 7～15%, the magnesia powder 80～86% of (100 orders～120 orders), liquid-solid ratio be (2.5～3.5): 1.By the insulating riser sleeve that above-mentioned prescription is made, its refractoriness is greater than 1790 ℃.Manufacturing process is: the water yield that every batch of material is required adds agitator tank, add refractory fibre and paper in the jar according to quantity again, start was stirred 2～3 minutes then, add quantitative phenol-formaldehyde resin powder and quantitative urotropine again, be right after the quantitative magnesia powder stirring of adding and got final product blowing in 15 minutes, treat that vacuum reaches more than the 400mmHg post, the mould that will get ready inserts in the batch can and adsorbs, by the spherical shell size of making, can pack or use after the thick drying of the shell of controlling well.
The present invention's spherical heatproof riser cover is saved liquid metal 10～15% than cylindrical insulated feeder, glue together used material and artificial because of there being tongue and groove to save, and used insulation material refractoriness height also can be saved and cut place, the footpath energy, as: oxygen, calcium carbide etc.
Description of drawings:
Figure: spherical heatproof riser cover cutaway view.
Second insulation cladding (1); First insulation cladding (2); Venthole (3); Cut footpath portion (4).
Embodiment:
Mold Making of the present invention: at first good Mould Machining, and on the aluminum dipping form body, bore φ 4.5～5.5mm hole, enclose 80 orders～100 order copper mesh then, by the bronze flake connection of 0.2mm; Die body is connected by bolt with lid; And neutralize circle at motif flange place edge, link by countersunk bolt; Counterdie cuts the place, footpath and adds the detachable trim ring, and is fixed by angle, and is processed into corresponding R size in detachable trim ring inner radius.The mould that assembles placed mix in the batch can make, vacuum reaches the 400mmHg post when above, i.e. operation begins.After several seconds, insulation material just is adsorbed on the mould.After profile was repaired dehydration slightly, following formwork can be finished, and send oven dry.It is upper and lower that molded to make method identical.
The making of insulation material of the present invention: the water that at first will be three times in solid material adds in the agitator tank.Admittedly material is by 100% by every batch then, and with refractory fibre 8%, paper 5.5%, 2123 phenolic resins and urotropine 4%, wherein urotropine is 10% of a phenolic resins weight, and magnesia powder (100 order) 82.5% can be finished by above-mentioned manufacturing process.
Claims (3)
1, a kind of spherical heatproof riser cover of horizontal parting, it is characterized in that first ball cover has circumferential groove along horizontal parting face inboard, the gas outlet is arranged at first ball cover top, and lower semisphere has the circumferential projection that matches with first ball cover on the horizontal parting face, and groove matches with projection.
2, spherical heatproof riser cover according to claim 1 is characterized in that there is garden angle R at the position, footpath of cutting of its below of said second insulation cladding, and 3mm≤R＜10mm.
3, spherical heatproof riser cover according to claim 1 and 2, it is characterized in that insulation material by: refractory fibre 7.5～8.5%, paper 4.5～5.5%, phenolic resins (2123) 3.5～4%, urotropine be account for phenolic resins weight 10～15%, the magnesia powder 83～85% of (100 orders～120 orders), liquid-solid ratio be (2.5～3): 1, formulated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN86100068A CN86100068B (en) | 1986-01-07 | 1986-01-07 | Spherical heatproof riser cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN86100068A CN86100068B (en) | 1986-01-07 | 1986-01-07 | Spherical heatproof riser cover |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN86100068A CN86100068A (en) | 1987-07-22 |
| CN86100068B true CN86100068B (en) | 1988-12-28 |
Family
ID=4800873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN86100068A Expired CN86100068B (en) | 1986-01-07 | 1986-01-07 | Spherical heatproof riser cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN86100068B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1958717B1 (en) * | 2005-11-30 | 2019-01-09 | Kao Corporation | Component for casting production and method for producing same |
| CN102363205A (en) * | 2011-11-11 | 2012-02-29 | 济南圣泉倍进陶瓷过滤器有限公司 | Spherical riser and die and method for preparing same |
| CN104493097A (en) * | 2014-12-15 | 2015-04-08 | 沪东重机有限公司 | Method and mud core for improving feeding effect of open riser of iron castings |
| CN104889362B (en) * | 2015-06-03 | 2017-10-10 | 天津市航宇嘉瑞科技股份有限公司 | A kind of low pressure metal casting mould |
-
1986
- 1986-01-07 CN CN86100068A patent/CN86100068B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN86100068A (en) | 1987-07-22 |
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