CN107225210A - A kind of method for casting wax-pattern external paint and application coating progress molding shell - Google Patents
A kind of method for casting wax-pattern external paint and application coating progress molding shell Download PDFInfo
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- CN107225210A CN107225210A CN201710542685.6A CN201710542685A CN107225210A CN 107225210 A CN107225210 A CN 107225210A CN 201710542685 A CN201710542685 A CN 201710542685A CN 107225210 A CN107225210 A CN 107225210A
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- China
- Prior art keywords
- coated
- superficial layer
- waterglass
- hardening
- stucco
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C3/00—Selection of compositions for coating the surfaces of moulds, cores, or patterns
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
- B22C9/04—Use of lost patterns
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
One kind casting wax-pattern external paint, including superficial layer one, superficial layer two, transition zone and enhancement layer composition；Beneficial effects of the present invention are：Of the invention novel in design, preparation technology is scientific and normal, using the different ratio of layered coating, it is ensured that the abundant equilibrium between each layer, it is ensured that the die cavity after preparation possesses high temperature resistant, the performance of high intensity, it is ensured that accurate performance when successive castings are cast.
Description
Technical field
The present invention relates to precision casting technology field, and in particular to one kind casts wax-pattern external paint and entered using the coating
The method of row molding shell.
Background technology
Casting is a kind of history of mankind's grasp than metal heat processing technique, about 6000 earlier.China about exists
B.C. 1700~it is first 1000 between have been enter into heyday of bronze casting, technique and reached at a relatively high level.Casting
It is that liquid metals is cast in the casting cavity being adapted with part shape, after after its cooled and solidified, to obtain part or hair
The method of base.
When being cast in progress, it is ensured that the fineness of the precise part after casting is typically the casting depending on daily early stage
Waxed standby wax-pattern, in actual operation, is carried out after being prepared with the wax-pattern of size by the shape to workpiece, then by wax
Mould outer wall carries out corresponding outer wall and is coated with after exotic material, after being dewaxed, prepares corresponding model cavity, makes for follow-up
With in current technology field, usual outer wall coating and the mode being coated with are relatively single, are carried out using identical coating
Multilayer, which is coated with, to be used, this mode of operation, although can carry out the actual preparation of model cavity, but the model cavity performance after preparing
It is insuperior, it is uneven, when causing subsequent treatment, there is forging defect rate larger.
The content of the invention：
The technical problems to be solved by the invention are to provide a kind of technical specification, formulation for coating material rationally, preparation method letter
The casting wax-pattern external paint of branch and the method for application coating progress molding shell.
The technical problems to be solved by the invention are realized using following technical scheme：
One kind casting wax-pattern external paint, it is characterised in that：Including superficial layer one, superficial layer two, transition zone and enhancement layer
Composition；
Described superficial layer one is included：One-level waterglass 32-33%, silica flour 1.3-1.5%, surplus are well mud powder；
Described superficial layer two is included：One-level waterglass 32-33%, silica flour 1.2-1.4%, surplus are well mud powder；
Described transition zone is included：Two grades of waterglass 37-38%, silica flour 31.5-32%, surpluses are well mud powder；
Described enhancement layer is included：Two grades of waterglass 37-38%, silica flour 24-25%, surpluses are well mud powder；
Described one-level waterglass includes following components：Silica 21-23%, sodium oxide molybdena 6.7-7.5%, surplus are silicon
Sand；
Two grades of described waterglass include following components：Silica 24-28%, sodium oxide molybdena 8-9%, surplus are silica sand；
A kind of method of molding shell, it is characterised in that comprise the steps：
1) above-mentioned raw materials are taken and are not stirred into material；
2) and then carry out corresponding superficial layer one outside model again to be coated with, then carry out stucco, hardening, dry；
3) after above-mentioned superficial layer one is dried, and during the non-whitening of surface, being coated with for superficial layer two is carried out, is then spread
Sand, hardening, drying；
4) after after the drying of above-mentioned superficial layer two, and during the non-whitening of surface, carry out being coated with for transition zone, then carry out stucco,
Harden, drying of cutting off the water supply；
5) after after the drying of above-mentioned transition zone, and during the non-whitening of surface, being coated with for enhancement layer is carried out, stucco is then carried out, hard
Change, drying of cutting off the water supply, enhancement layer is coated with 3-4 layers；
When being coated with slurry and stucco in the step 2-5, product surface avoids windrow, if any windrow, is carried out before stucco
It is coated with uniform；
Hardening must be stood up in hardening process in the step 2-5, also to follow first to harden and first dry principle, product is put into
Hardening Chi Shiyao is put in order, can not be obscured.
Beneficial effects of the present invention are：Of the invention novel in design, preparation technology is scientific and normal, using the difference of layered coating
Proportioning, it is ensured that the abundant equilibrium between each layer, it is ensured that the die cavity after preparation possesses high temperature resistant, the performance of high intensity, it is ensured that after
Accurate performance during continuous cast casting.
Embodiment
In order that the technical means, the inventive features, the objects and the advantages of the present invention are easy to understand, tie below
Specific embodiment is closed, the present invention is expanded on further.
Embodiment 1
One kind casting wax-pattern external paint, it is characterised in that：Including superficial layer one, superficial layer two, transition zone and enhancement layer
Composition；
Described superficial layer one is included：One-level waterglass 32.5%, silica flour 1.4%, surplus are well mud powder；
Described superficial layer two is included：One-level waterglass 32.5%, silica flour 1.3%, surplus are well mud powder；
Described transition zone is included：Two grades of waterglass 37.5%, silica flour 31.75%, surpluses are well mud powder；
Described enhancement layer is included：Two grades of waterglass 37.5%, silica flour 24.5%, surpluses are well mud powder；
Described one-level waterglass includes following components：Silica 22%, sodium oxide molybdena 7.1%, surplus are silica sand；
Two grades of described waterglass include following components：Silica 26%, sodium oxide molybdena 8.5%, surplus are silica sand；
A kind of method of molding shell, comprises the steps：
1) above-mentioned raw materials are taken and are not stirred into material；
2) and then carry out corresponding superficial layer one outside model again to be coated with, then carry out stucco, hardening, dry；
3) after above-mentioned superficial layer one is dried, and during the non-whitening of surface, being coated with for superficial layer two is carried out, is then spread
Sand, hardening, drying；
4) after after the drying of above-mentioned superficial layer two, and during the non-whitening of surface, carry out being coated with for transition zone, then carry out stucco,
Harden, drying of cutting off the water supply；
5) after after the drying of above-mentioned transition zone, and during the non-whitening of surface, being coated with for enhancement layer is carried out, stucco is then carried out, hard
Change, drying of cutting off the water supply, enhancement layer is coated with 3-4 layers；
When being coated with slurry and stucco in the step 2-5, product surface avoids windrow, if any windrow, is carried out before stucco
It is coated with uniform；
Hardening must be stood up in hardening process in the step 2-5, also to follow first to harden and first dry principle, product is put into
Hardening Chi Shiyao is put in order, can not be obscured.
Embodiment 2
One kind casting wax-pattern external paint, including superficial layer one, superficial layer two, transition zone and enhancement layer composition；
Described superficial layer one is included：One-level waterglass 32%, silica flour 1.3%, surplus are well mud powder；
Described superficial layer two is included：One-level waterglass 32%, silica flour 1.2%, surplus are well mud powder；
Described transition zone is included：Two grades of waterglass 37%, silica flour 31.5%, surpluses are well mud powder；
Described enhancement layer is included：Two grades of waterglass 37%, silica flour 24%, surpluses are well mud powder；
Described one-level waterglass includes following components：Silica 21%, sodium oxide molybdena 6.7%, surplus are silica sand；
Two grades of described waterglass include following components：Silica 24%, sodium oxide molybdena 8%, surplus are silica sand；
A kind of method of molding shell, comprises the steps：
1) above-mentioned raw materials are taken and are not stirred into material；
2) and then carry out corresponding superficial layer one outside model again to be coated with, then carry out stucco, hardening, dry；
3) after above-mentioned superficial layer one is dried, and during the non-whitening of surface, being coated with for superficial layer two is carried out, is then spread
Sand, hardening, drying；
4) after after the drying of above-mentioned superficial layer two, and during the non-whitening of surface, carry out being coated with for transition zone, then carry out stucco,
Harden, drying of cutting off the water supply；
5) after after the drying of above-mentioned transition zone, and during the non-whitening of surface, being coated with for enhancement layer is carried out, stucco is then carried out, hard
Change, drying of cutting off the water supply, enhancement layer is coated with 3-4 layers；
When being coated with slurry and stucco in the step 2-5, product surface avoids windrow, if any windrow, is carried out before stucco
It is coated with uniform；
Hardening must be stood up in hardening process in the step 2-5, also to follow first to harden and first dry principle, product is put into
Hardening Chi Shiyao is put in order, can not be obscured.
Embodiment 3
One kind casting wax-pattern external paint, including superficial layer one, superficial layer two, transition zone and enhancement layer composition；
Described superficial layer one is included：One-level waterglass 33%, silica flour 1.5%, surplus are well mud powder；
Described superficial layer two is included：One-level waterglass 33%, silica flour 1.4%, surplus are well mud powder；
Described transition zone is included：Two grades of waterglass 38%, silica flour 32%, surpluses are well mud powder；
Described enhancement layer is included：Two grades of waterglass 38%, silica flour 25%, surpluses are well mud powder；
Described one-level waterglass includes following components：Silica 23%, sodium oxide molybdena 7.5%, surplus are silica sand；
Two grades of described waterglass include following components：Silica 28%, sodium oxide molybdena 9%, surplus are silica sand；
A kind of method of molding shell, comprises the steps：
1) above-mentioned raw materials are taken and are not stirred into material；
2) and then carry out corresponding superficial layer one outside model again to be coated with, then carry out stucco, hardening, dry；
3) after above-mentioned superficial layer one is dried, and during the non-whitening of surface, being coated with for superficial layer two is carried out, is then spread
Sand, hardening, drying；
4) after after the drying of above-mentioned superficial layer two, and during the non-whitening of surface, carry out being coated with for transition zone, then carry out stucco,
Harden, drying of cutting off the water supply；
5) after after the drying of above-mentioned transition zone, and during the non-whitening of surface, being coated with for enhancement layer is carried out, stucco is then carried out, hard
Change, drying of cutting off the water supply, enhancement layer is coated with 3-4 layers；
When being coated with slurry and stucco in the step 2-5, product surface avoids windrow, if any windrow, is carried out before stucco
It is coated with uniform；
Hardening must be stood up in hardening process in the step 2-5, also to follow first to harden and first dry principle, product is put into
Hardening Chi Shiyao is put in order, can not be obscured.
It is in the present invention, to prepare the sandstone performance indications of formwork shell below：
Contrast test：
4 groups of relatively uniform cast member essence casting numbering traditional groups, 1 group of contrast, 2 groups of contrast, 3 groups of contrasts are carried out respectively, really
Raw material, the shape for protecting casting are unified, and processing technology is unified, and traditional group uses traditional coating and traditional formwork shell preparation side
Embodiment 1, embodiment 2 and coating and traditional mould in embodiment 3 is respectively adopted in method, 1 group of contrast, 3 groups of the combination of contrast 2 contrast
Shell preparation method, determines formwork shell after preparing respectively：
Fire resistance is divided into：Good, general, difference；
Expansion rate is divided into：Good, general, difference；
Mechanical strength is divided into：Good, general, difference；
Shock resistance is divided into：Good, general, difference；
Chemical stability is divided into：Good, general, difference；
Gas permeability is divided into：Good, general, difference；
Hulling performance is divided into：Good, general, difference；
Correction data is as follows：
As can be seen here, the casting wax of traditional group it is actual in use, fire resistance, expansion rate, mechanical strength, shock resistance,
Chemical stability, gas permeability and shelling property are the standard of difference；And contrast 1 group, contrast 2 groups and the fire resistance of 3 groups of contrast, expansion
Rate, mechanical strength, shock resistance, chemical stability, gas permeability and the general or good standard of shelling property, therefore can be assumed that this
The performance of the formwork shell of coating and the application in application is better than the performance of conventional model shell.
The general principle and principal character and advantages of the present invention of the present invention has been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the simply explanation described in above-described embodiment and specification is originally
The principle of invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (6)
1. one kind casting wax-pattern external paint, it is characterised in that：Including superficial layer one, superficial layer two, transition zone and enhancement layer group
Into；
Described superficial layer one is included：One-level waterglass 32-33%, silica flour 1.3-1.5%, surplus are well mud powder；
Described superficial layer two is included：One-level waterglass 32-33%, silica flour 1.2-1.4%, surplus are well mud powder；
Described transition zone is included：Two grades of waterglass 37-38%, silica flour 31.5-32%, surpluses are well mud powder；
Described enhancement layer is included：Two grades of waterglass 37-38%, silica flour 24-25%, surpluses are well mud powder.
2. a kind of casting wax-pattern external paint according to claim 1, it is characterised in that：Described one-level waterglass includes
Following components：Silica 21-23%, sodium oxide molybdena 6.7-7.5%, surplus are silica sand.
3. a kind of casting wax-pattern external paint according to claim 1, it is characterised in that：Two grades of described waterglass include
Following components：Silica 24-28%, sodium oxide molybdena 8-9%, surplus are silica sand.
4. the method that coating carries out molding shell in application claim 1, it is characterised in that comprise the steps：
1) above-mentioned raw materials are taken and are not stirred into material；
2) and then carry out corresponding superficial layer one outside model again to be coated with, then carry out stucco, hardening, dry；
3) after after the drying of above-mentioned superficial layer one, and during the non-whitening of surface, being coated with for superficial layer two is carried out, stucco is then carried out, hard
Change, dry；
4) after after the drying of above-mentioned superficial layer two, and during the non-whitening of surface, carry out being coated with for transition zone, then carry out stucco, hardening,
Cut off the water supply drying；
5) after above-mentioned transition zone is dried, and during the non-whitening of surface, being coated with for enhancement layer is carried out, stucco, hardening is then carried out, breaks
Water is dried, and enhancement layer is coated with 3-4 layers.
5. the method for molding shell according to claim 4, it is characterised in that：Slurry is coated with the step 2-5 and is spread
During sand, product surface avoids windrow, if any windrow, carries out being coated with uniformly before stucco.
6. the method for molding shell according to claim 4, it is characterised in that：Must in hardening process in the step 2-5
Hardening must be stood up, also to follow first to harden and first dry principle, product is put into hardening Chi Shiyao and put in order, can not obscure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710542685.6A CN107225210A (en) | 2017-07-05 | 2017-07-05 | A kind of method for casting wax-pattern external paint and application coating progress molding shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710542685.6A CN107225210A (en) | 2017-07-05 | 2017-07-05 | A kind of method for casting wax-pattern external paint and application coating progress molding shell |
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| Publication Number | Publication Date |
|---|---|
| CN107225210A true CN107225210A (en) | 2017-10-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710542685.6A Pending CN107225210A (en) | 2017-07-05 | 2017-07-05 | A kind of method for casting wax-pattern external paint and application coating progress molding shell |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3196506A (en) * | 1958-01-13 | 1965-07-27 | Howe Sound Co | Method of making a shell mold by lost wax process |
| JPS63170088A (en) * | 1987-01-09 | 1988-07-13 | Taiho Ind Co Ltd | Material to be recorded for thermal transfer |
| CN1088495A (en) * | 1993-11-06 | 1994-06-29 | 南昌航空工业学院 | Rare-earth oxidate sodium silicate precision investment casting mould case and making thereof |
| CN101138781A (en) * | 2007-09-24 | 2008-03-12 | 中国南车集团戚墅堰机车车辆工艺研究所 | Investment casting formwork and method of producing the same |
| CN102389943A (en) * | 2011-11-26 | 2012-03-28 | 淅川县华新铸造有限公司 | Manufacturing method of thin shell |
| CN104399890A (en) * | 2014-11-13 | 2015-03-11 | 柳州金特机械有限公司 | Manufacture method for sodium silicate shell of investment-precision-casting axle housing |
| CN104439071A (en) * | 2014-11-21 | 2015-03-25 | 柳州金特机械有限公司 | Shell manufacturing technology of precision casting |
| CN105014004A (en) * | 2014-04-30 | 2015-11-04 | 江苏万恒铸业有限公司 | Optimized technology for manufacturing water glass shell |
-
2017
- 2017-07-05 CN CN201710542685.6A patent/CN107225210A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3196506A (en) * | 1958-01-13 | 1965-07-27 | Howe Sound Co | Method of making a shell mold by lost wax process |
| JPS63170088A (en) * | 1987-01-09 | 1988-07-13 | Taiho Ind Co Ltd | Material to be recorded for thermal transfer |
| CN1088495A (en) * | 1993-11-06 | 1994-06-29 | 南昌航空工业学院 | Rare-earth oxidate sodium silicate precision investment casting mould case and making thereof |
| CN101138781A (en) * | 2007-09-24 | 2008-03-12 | 中国南车集团戚墅堰机车车辆工艺研究所 | Investment casting formwork and method of producing the same |
| CN102389943A (en) * | 2011-11-26 | 2012-03-28 | 淅川县华新铸造有限公司 | Manufacturing method of thin shell |
| CN105014004A (en) * | 2014-04-30 | 2015-11-04 | 江苏万恒铸业有限公司 | Optimized technology for manufacturing water glass shell |
| CN104399890A (en) * | 2014-11-13 | 2015-03-11 | 柳州金特机械有限公司 | Manufacture method for sodium silicate shell of investment-precision-casting axle housing |
| CN104439071A (en) * | 2014-11-21 | 2015-03-25 | 柳州金特机械有限公司 | Shell manufacturing technology of precision casting |
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Application publication date: 20171003 |