CN107774906A - A kind of method with clay-bonded sand cast superalloy mould - Google Patents
A kind of method with clay-bonded sand cast superalloy mould Download PDFInfo
- Publication number
- CN107774906A CN107774906A CN201610745396.1A CN201610745396A CN107774906A CN 107774906 A CN107774906 A CN 107774906A CN 201610745396 A CN201610745396 A CN 201610745396A CN 107774906 A CN107774906 A CN 107774906A
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- CN
- China
- Prior art keywords
- sand
- casting
- clay
- cast
- mould
- 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.)
- Pending
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Classifications
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mold Materials And Core Materials (AREA)
Abstract
The invention discloses a kind of method with clay-bonded sand cast superalloy mould, it is characterised in that and first, make sand mold；Second, dry sand mold；3rd, casting, after casting, cooled down in vacuum chamber.Advantage of the present invention：In the case where not increasing gas forming amount, the deformability by improving casting mold and core efficiently solves the question of casting crack of large-sized high-temperature alloy mould.
Description
Technical field
The invention belongs to casting technology field, and in particular to a kind of method with clay-bonded sand cast superalloy mould.
Background technology
Molding sand used in sand casting is divided into resin sand, water-glass sand, clay-bonded sand etc.；Sand mold mouldability made of resin sand
Well, size is accurate, collapsibility is good, energy resource consumption is few, but high temperature alloy mould is typically carried out in the vacuum chamber of vaccum sensitive stove
Casting, the excessive gas forming amount of resin sand will form injury to vacuum chamber.Water-glass sand has good fluidity, good permeability and intensity
The advantages that high, but pattern draft adds greatly amount of machining, the easily glutinous sand of casting, and sand mold moisture absorption easily makes casting produce gas hole defect,
Less demanding high-temperature alloy casting also adopts this molding sand.Clay-bonded sand divides green-sand and dry sand, and green-sand sand mold is without drying
Dry, water content is higher, thus casting easily produce stomata, burning into sand, scab, sand holes, rise sand the defects of；Dry sand sand mold needs to dry
Dry, sand mold intensity is high, good permeability, it is not easy to the defects of producing sand washing, scab, stomata, suitable for big-and-middle-sized high temperature alloy of casting
Casting.
The content of the invention
In order to overcome above-mentioned technical problem existing for prior art, used it is an object of the present invention to provide one kind viscous
The method of soil sand cast superalloy mould, the porosity is low, deformation is small, product qualification rate is high, manufacturing cost is low.
A kind of method with clay-bonded sand cast superalloy mould provided by the invention, comprises the following steps：
First, make sand mold：Wooden model is put into after completing molding sand in the bottom of sandbox, dry type clay-bonded sand is covered around wooden model and is made
For facing sand, thickness 70-90mm；Core facing sand uses hollow or inserts resin sand using dry type clay-bonded sand, center portion, and thickness is
80-100mm；
Second, dry sand mold：In 3~4 times cast moulding coating materials of mould surface brush to solidify sand mold, 20~50 DEG C are entered stove, with 10
~30 DEG C/h speed heats up with stove, rises to 370-490 DEG C, is incubated 40~50h, furnace cooling；
3rd, casting：Cast in vaccum sensitive stove, 30~60Pa of vacuum, cast temperature pours at 1490~1610 DEG C
After casting, cooled down in vacuum chamber and be no less than 1.8h.
A kind of method with clay-bonded sand cast superalloy mould provided by the invention, its advantage are, are not
In the case of increasing gas forming amount, the deformability by improving casting mold and core efficiently solves the casting of large-sized high-temperature alloy mould
Make crack problem.
Embodiment
With reference to one embodiment, a kind of method with clay-bonded sand cast superalloy mould provided by the invention is entered
Row detailed description.
Embodiment
First, make sand mold：Wooden model is put into after completing molding sand in the bottom of sandbox, dry type clay is covered around wooden model
Sand is as facing sand, thickness 90mm；Core facing sand uses hollow or inserts resin sand using dry type clay-bonded sand, center portion, and thickness is
80mm；
Second, dry sand mold：In 4 times cast moulding coating materials of mould surface brush to solidify sand mold, 50 DEG C are entered stove, with 30 DEG C/h speed
Degree heats up with stove, rises to 370 DEG C, is incubated 50h, furnace cooling；
3rd, casting：Being cast in vaccum sensitive stove, vacuum 60Pa, cast temperature is at 1610 DEG C, after casting,
Cooling is equal to 1.8h in vacuum chamber.
Claims (1)
- A kind of 1. method with clay-bonded sand cast superalloy mould, it is characterised in that：Comprise the following steps：First, make sand mold：Wooden model is put into after completing molding sand in the bottom of sandbox, dry type clay-bonded sand is covered around wooden model and is made For facing sand, thickness 70-90mm；Core facing sand uses hollow or inserts resin sand using dry type clay-bonded sand, center portion, and thickness is 80-100mm；Second, dry sand mold：In 3~4 times cast moulding coating materials of mould surface brush to solidify sand mold, 20~50 DEG C are entered stove, with 10 ~30 DEG C/h speed heats up with stove, rises to 370-490 DEG C, is incubated 40~50h, furnace cooling；3rd, casting：Cast in vaccum sensitive stove, 30~60Pa of vacuum, cast temperature pours at 1490~1610 DEG C After casting, cooled down in vacuum chamber and be no less than 1.8h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610745396.1A CN107774906A (en) | 2016-08-29 | 2016-08-29 | A kind of method with clay-bonded sand cast superalloy mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610745396.1A CN107774906A (en) | 2016-08-29 | 2016-08-29 | A kind of method with clay-bonded sand cast superalloy mould |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107774906A true CN107774906A (en) | 2018-03-09 |
Family
ID=61441143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610745396.1A Pending CN107774906A (en) | 2016-08-29 | 2016-08-29 | A kind of method with clay-bonded sand cast superalloy mould |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107774906A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111515346A (en) * | 2020-04-29 | 2020-08-11 | 南通奥里斯特机械有限公司 | Manufacturing process of stamping die |
| CN113617949A (en) * | 2021-08-13 | 2021-11-09 | 南京思创精密模具有限公司 | Manufacturing process of stamping die |
-
2016
- 2016-08-29 CN CN201610745396.1A patent/CN107774906A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111515346A (en) * | 2020-04-29 | 2020-08-11 | 南通奥里斯特机械有限公司 | Manufacturing process of stamping die |
| CN113617949A (en) * | 2021-08-13 | 2021-11-09 | 南京思创精密模具有限公司 | Manufacturing process of stamping die |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180309 |
|
| WD01 | Invention patent application deemed withdrawn after publication |