CN101011722A - Method of shaping large-scale ceramic casting - Google Patents
Method of shaping large-scale ceramic casting Download PDFInfo
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- CN101011722A CN101011722A CN 200610125514 CN200610125514A CN101011722A CN 101011722 A CN101011722 A CN 101011722A CN 200610125514 CN200610125514 CN 200610125514 CN 200610125514 A CN200610125514 A CN 200610125514A CN 101011722 A CN101011722 A CN 101011722A
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Abstract
The invention relates to the cast forming for the large scale ceramics. It designs the casting piece's shape, making inner core, separating the casting shape and zones, with each zone coated with ceramics, sanding, natural drying, spreading the metal net, hanging sand hook, applying ceramics slurry, sanding, natural drying, applying binding agent, grinding the sand, making air channel, hardening, skin drying, casing the mold outside the inner core, filling copper smelts, retreating mold, inner core, fine modification to get the final product. It is use for ventilation, convenient to mend, ensuring the excess of air in filling to get the crack on the ceramic surface. It is fine in quality elegant in appearance.
Description
Technical field
The present invention relates to a kind of production method of super large type bronze large bell.
Background technology
The ceramic mould casting formative method is mainly used in table and higher art casting and the precision casting of quality requirement.At present, have only the formative method of small-sized foundry goods, small-sized casting weight is little, area is little, when moulding, uses original mode of operation, and the floor sand of pounding again behind the brushing ceramic size can satisfy the production needs.But reach tens up to a hundred tons large-scale artistic cast article for weight, its surface area reaches up to a hundred square metres, and requires one-shot forming, because the duration of pouring is very long, the casting mold heated time is long, adopts original formative method to have following problem:
1, for the ultra-large type foundry goods, under the enormous pressure of a large amount of copper liquid, ceramic mould and floor sand layer are very easily peeled off, and cause die cavity to break, product rejection;
2, ceramic mould insufficient strength is easy to generate crackle or face checking and damages;
3, because casting mold is bigger, and mold thickness is thicker, when cast, can produce a large amount of gases, traditional exhaust mode of getting pore can not satisfy the needs of a large amount of exhausts;
4, the ceramic mould casting surface will be dried, and removes the Free water of ceramic layer, in order to avoid steam transpiration during cast forms casting flaws such as pore, for the heavy castings more than 100 tons, how not to toast before this, is baked to what degree precedent.
Above problem is not if solve, and then in casting process, large-scale ceramic casting bears the incessantly impulsive force and the pressure of large quantitative metal liquid, and the surface can occur ftractureing, arching upward etc., thereby causes surperficial gradually destroyedly, even scraps.
Summary of the invention
The objective of the invention is at above-mentioned present situation, aim to provide problems such as ftractureing, arch upward can not appear in a kind of large-scale ceramic casting surface, surface quality is superior, the method for shaping large-scale ceramic casting of decorative pattern fineness.
The implementation of the object of the invention is, method of shaping large-scale ceramic casting, and concrete steps are as follows: 1) design heavy castings shape, with water-glass sand system foundry goods inner core, accurate thin-shell type and ceramic mould composition casting mold,
2) with the layering of foundry goods casting mold, subregion, separate with metallic plate between the Qu Yuqu, subregion brushing ceramic size, then stucco,
3) after the ceramic air dry, wire netting is tiled on it, and fixing, and first-class extension gagger is brushed ceramic size again, and stucco,
4) air dry, the brush binding agent, the floor sand of pounding is left the gas passage, finishes casting mold,
5) casting mold sclerosis is carried out surface drying baking type with naked light,
6) accurate thin-shell type and ceramic mould composition casting mold is enclosed within outside the water-glass sand system foundry goods inner core, constitutes the foundry goods die cavity, and cast copper water is removed casting mold, heart, gets the large-scale ceramic casting blank,
7) finishing gets the large-scale ceramic casting product.
Designing cast shape of the present invention, system inner core, casting mold with casting mold layering, subregion, separate with metallic plate between the Qu Yuqu, subregion brushing ceramic size, such benefit is: the shrinkage stress that has reduced " large tracts of land heavy wall " foundry goods destroys, helps casting mold exhaust, the convenient casting mold of repairing simultaneously; The metal network folder is attached in the middle of the ceramic size, prevents the distortion of ceramic mould casting under the condition of high temperature, extension gagger, every 1dm are set on wire netting simultaneously with this
2Scope in be provided with one, increase the control point combine with floor sand, can effectively prevent peeling off of ceramic mould and floor sand; Adopt new naked light surface drying technology, can effectively remove the Free water in the ceramic mould casting; Utilize blast pipe, give vent to anger to restrict and draw gas, guarantee when cast, can not cause ceramic surface crackle to occur owing to gas is too much.
The present invention can guarantee problems such as ftractureing, arch upward can not appear in the large-scale ceramic casting surface, and surface quality is superior, the decorative pattern fineness.
Description of drawings
Fig. 1 is a large-scale ceramic clock foundry goods construction aspect graph
Fig. 2 is the cutaway view of the 3rd layer segment
Fig. 3 is die cavity, steam vent, the graph of a relation between the rope of giving vent to anger, floor sand layer
The specific embodiment
Concrete steps of the present invention are as follows: the designing cast shape, and system inner core, casting mold are with casting mold layering, subregion, separate subregion brushing ceramic size, stucco between the Qu Yuqu, air dry, the tiling wire netting, fixing, first-class extension gagger is brushed ceramic size again, stucco, air dry, brush binding agent, the floor sand of pounding, leave gas passage, sclerosis, with naked light carry out surface drying, casting mold is enclosed within outside the inner core, the baking casting mold, pour into a mould copper water, remove casting mold, heart, finishing gets product.Binding agents such as binding agent bauxite, waterglass.
The present invention is divided into 1m with casting mold layering, subregion
2About a district, the metallic plate with δ=3mm between piece and the piece separates, subregion brush pottery.Such benefit is: the shrinkage stress that has reduced " large tracts of land heavy wall " foundry goods destroys, helps casting mold exhaust, the convenient casting mold of repairing simultaneously.Place the position of metallic plate and select the clear area, only can be created in the clear area, can not influence the decorative pattern position, the surface quality of foundry goods is guaranteed even there is fine cracks to produce also like this.
The present invention adopts a kind of wire netting, and the metal network folder is attached in the middle of the ceramic size, prevents distortion under the condition of high temperature with this.Because the shrinkage factor of pottery is 0.9 ∽ 1.2%, adopt φ 0.5 ∽ φ 1mm wire to be compiled into net, every 1m
2Grid number be controlled at 8000 of 3500 ∽, can effectively offset casting mold and be subjected to thermogenetic thermal stress, prevent the distortion, the cracking.Every 1dm on the wire netting
2Be provided with one and hang gagger, increase the control point that combines with floor sand, can effectively prevent peeling off of ceramic mould and floor sand.
The present invention has adopted new baking process, by test, remove the Free water in the ceramic mould casting, and at the large tracts of land foundry goods, naked light surface drying baking type adopts per 20 ∽ 30min baking 1m
2Method.
With reference to Fig. 1, Fig. 2, Fig. 3, in the present invention's construction, casting mold is divided into 6 layers, every layer the floor sand layer 1 except that the upper strata presses close to locate arranging exhaust air hole 2 with ceramic layer 3, draws the rope 5 of giving vent to anger for every layer.Form die cavity 4 between casting mold and the heart.
Claims (5)
1, method of shaping large-scale ceramic casting is characterized in that concrete steps are as follows:
1) design heavy castings shape, with water-glass sand system foundry goods inner core, accurate thin-shell type and ceramic mould are formed casting mold,
2) with casting mold layering, subregion, separate with metallic plate between the Qu Yuqu, subregion brushing ceramic size, then stucco,
3) after the ceramic air dry, wire netting is tiled on it, and fixing, and first-class extension gagger is brushed ceramic size again, and stucco,
4) air dry, the brush binding agent, the floor sand of pounding is left the gas passage, finishes casting mold,
5) casting mold sclerosis is carried out surface drying baking type with naked light,
6) accurate thin-shell type and ceramic mould composition casting mold is enclosed within outside the water-glass sand system foundry goods inner core, constitutes the foundry goods die cavity, and cast copper water is removed casting mold, heart, gets the large-scale ceramic casting blank,
7) finishing gets the large-scale ceramic casting product.
2, method of shaping large-scale ceramic casting according to claim 1 is characterized in that wire diameter is φ 0.5 ∽ φ 1mm, and the metal grill number is 8000 of every square meter 3500 ∽.
3, method of shaping large-scale ceramic casting according to claim 1 is characterized in that adopting φ 0.5 ∽ φ 1mm wire to be compiled into wire netting.
4, according to claim 1 or 3 described method of shaping large-scale ceramic casting, it is characterized in that every 1dm on the wire netting
2Be provided with one and hang gagger.
5 method of shaping large-scale ceramic casting according to claim 1 is characterized in that naked light surface drying baking type adopts per 20 ∽ 30min baking 1m
2Method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006101255145A CN101011722B (en) | 2006-12-19 | 2006-12-19 | Method of shaping large-scale ceramic casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006101255145A CN101011722B (en) | 2006-12-19 | 2006-12-19 | Method of shaping large-scale ceramic casting |
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| Publication Number | Publication Date |
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| CN101011722A true CN101011722A (en) | 2007-08-08 |
| CN101011722B CN101011722B (en) | 2010-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2006101255145A Active CN101011722B (en) | 2006-12-19 | 2006-12-19 | Method of shaping large-scale ceramic casting |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106513573A (en) * | 2016-10-27 | 2017-03-22 | 东兰音乐铜鼓文化传播有限责任公司 | Casting method for bronze drum mould |
| CN114309491A (en) * | 2021-12-29 | 2022-04-12 | 大连船用推进器有限公司 | Cavity structure and method convenient for observing drying state of large propeller blade |
-
2006
- 2006-12-19 CN CN2006101255145A patent/CN101011722B/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106513573A (en) * | 2016-10-27 | 2017-03-22 | 东兰音乐铜鼓文化传播有限责任公司 | Casting method for bronze drum mould |
| CN106513573B (en) * | 2016-10-27 | 2019-01-15 | 东兰音乐铜鼓文化传播有限责任公司 | A kind of casting method of bronze drum die |
| CN114309491A (en) * | 2021-12-29 | 2022-04-12 | 大连船用推进器有限公司 | Cavity structure and method convenient for observing drying state of large propeller blade |
| CN114309491B (en) * | 2021-12-29 | 2023-11-14 | 大连船用推进器有限公司 | Cavity structure and method convenient for observing baking state of large-sized propeller blade |
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| Publication number | Publication date |
|---|---|
| CN101011722B (en) | 2010-08-11 |
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