CN107855472A - The modified technique and sand core structure of casting through hole casting - Google Patents
The modified technique and sand core structure of casting through hole casting Download PDFInfo
- Publication number
- CN107855472A CN107855472A CN201711189723.0A CN201711189723A CN107855472A CN 107855472 A CN107855472 A CN 107855472A CN 201711189723 A CN201711189723 A CN 201711189723A CN 107855472 A CN107855472 A CN 107855472A
- Authority
- CN
- China
- Prior art keywords
- hole
- casting
- support tube
- diameter
- equal
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/10—Cores; Manufacture or installation of cores
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
- B22D27/04—Influencing the temperature of the metal, e.g. by heating or cooling the mould
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The present invention relates to casting technology field, and in particular to a kind of modified technique and sand core structure of the casting of casting through hole.Including through hole casting sand type and some blocks of chills, the through hole casting sand type includes support tube and is wrapped in the outer wall core of support pipe outer wall, the length of the support tube is more than or equal to the length of through hole, the length of the outer wall core is equal to the length of through hole, and the one or both ends of the through hole casting sand type set some blocks of chills.The present invention can substantially reduce the temperature of through hole core during cast, avoid sintering, and cleaning is more convenient.
Description
Technical field
The present invention relates to casting technology field, and in particular to a kind of modified technique and sand core structure of the casting of casting through hole.
Background technology
The general wall thickness of air-vent of thick and large casting is 300mm-400mm, vent diameter typically between 80mm-120mm,
For the temperature of cast at 1350 DEG C or so, easily there are whole sintering in core, and the phenomenon that can not be cleared up, solution method has three kinds, its
One, matched using fresh sand and old sand, this method can not thoroughly solve the problems, such as scab；Second, using increase degree of packing method, the party
Method takes time and effort and effect and unobvious；Finally can also coating be used often to go out in the method for core external coating, program coating
Now it is unevenly coated, scab problem still occurs in respective location.
The content of the invention
The defects of for prior art, the present invention propose a kind of modified technique and sand core structure of the casting of casting through hole, its
It can reach and avoid scab and better heat-radiation effect.
To reach the effect above, the technical scheme is that on the one hand proposing a kind of improvement work of casting through hole casting
Skill, it is comprised the following steps that：
Step 1：Manufacture diameter is more than or equal to half through-hole diameter to be processed, and less than the support of through-hole diameter to be processed
Pipe；
Step 2：In support tube periphery parcel casting model powder, the through hole casting model powder that diameter is equal to through-hole diameter to be processed is obtained
Type；
Step 3：Lay some blocks of chills respectively in the top and bottom of through hole casting sand type；
Step 4：Poured into a mould.
Preferably, around chill laying and through hole.
Preferably, the support tube is core iron, and the chill contacts placement with the core iron.
On the other hand, the present invention proposes a kind of sand core structure of casting through hole casting, if it include through hole casting sand type with
Dry block chill, the through hole casting sand type include support tube and are wrapped in the outer wall core of support pipe outer wall, the support tube
Length is more than or equal to the length of through hole, and the length of the outer wall core is equal to the length of through hole, the through hole casting sand type
One or both ends set some blocks of chills.
Preferably, the external diameter of outer wall core is equal to the external diameter of through hole to be processed, and the diameter of the support tube is more than or equal to
Half through-hole diameter to be processed, and it is less than through-hole diameter to be processed.
Preferably, support tube is the tubular structure with through hole, and it is iron pipe, and its both ends contacts with chill respectively, and it is logical
Center core is set in hole, and the center core is connected with peripheral core.
Preferably, the thickness of the chill is more than or equal to the length of half through hole to be processed.
Preferably, some blocks of chills are a monoblock ring-type chill, and it is to be processed that its thickness is more than or equal to half
The length of through hole, its inner ring surface are in close contact with the support tube end outer wall.Further, the support tube is hollow iron
Pipe.
Beneficial effects of the present invention：The present invention can substantially reduce the temperature of through hole core during cast, avoid sintering,
Cleaning is more convenient.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the structural representation of processing Cooling Holes；
In figure：1st, chill, 2, through hole, 3, support tube, 4, outer wall core, 5, center core, 6, peripheral core.
Embodiment
Embodiment 1
The technical scheme of this patent is described in more detail with reference to embodiment.
The technical scheme is that on the one hand proposing a kind of modified technique of casting through hole casting, its specific steps is such as
Under：
Step 1：Manufacture diameter is more than or equal to the half diameter of through hole 2 to be processed, and less than the branch of through-hole diameter to be processed
Stay tube 3；
Step 2：In the periphery of the support tube 3 parcel casting model powder, the through hole casting model powder that diameter is equal to the diameter of through hole 2 to be processed is obtained
Type；
Step 3：Lay some blocks of chills 1 respectively in the top and bottom of through hole casting sand type；
Step 4：Poured into a mould.
Preferably, around the chill 1 laying and through hole.
Preferably, the support tube 3 is core iron, and the chill 1 contacts placement with the core iron.
On the other hand, the present invention proposes the sand core structure that a kind of casting through hole 2 is cast, if it include through hole casting sand type with
Dry block chill 1, the through hole casting sand type include support tube 3 and are wrapped in the outer wall core 4 of support pipe outer wall, the support tube
3 length is more than or equal to the length of through hole 2, and the length of the outer wall core 4 is equal to the length of through hole 2, the through hole casting
The both ends of sand mold set some blocks of chills 1 respectively.
Preferably, the external diameter of outer wall core 4 is equal to the external diameter of through hole 2 to be processed, and the diameter of the support tube 3 is more than or waited
In the half diameter of through hole 2 to be processed, and it is less than the diameter of through hole 2 to be processed.
Preferably, support tube 3 is the tubular structure with through hole, and it is iron pipe, and its both ends contacts with chill 1 respectively.In
Between the through hole of support tube 3 can play thermolysis, heat is gradually transferred to the big chill 1 of thickness at both ends by iron pipe afterwards,
Heat is progressively dissipated away afterwards, and support tube 3 can play a part of support, avoid scab phenomenon, even if just in case occurring
Scab phenomenon, only outer wall core 4 can be overheated and burnt, and support tube 3 and center core 5 can stand intact, and follow-up cleaning only needs
Knock out center core 5 and take out support tube 3.
Preferably, the thickness of the chill 1 is more than or equal to the length of half through hole 2 to be processed.
Preferably, some blocks of chills 1 are a monoblock ring-type chill, and it is to be processed that its thickness is more than or equal to half
The length of through hole, its inner ring surface are in close contact with the end outer wall of support tube 3.Further, the support tube 2 is hollow
Iron pipe, center core 5 is set, the center core 5 is connected with peripheral core 6, as shown in Figure 1 in its through hole.
Embodiment 2
The technical scheme of this patent is described in more detail with reference to embodiment.
As shown in Fig. 2 using present invention processing Cooling Holes, modified technique comprises the following steps that：
Step 1：Manufacture diameter is more than or equal to half through hole 2 to be processed（Cooling Holes）Diameter, and it is less than through hole 2 to be processed
（Cooling Holes）The support tube 3 of diameter；
Step 2：The through hole filling casting model powder in the periphery of the support tube 3 parcel casting model powder, support tube 3, obtain diameter and be equal to treat
Process the through hole casting sand type of the diameter of through hole 2；
Step 3：Some blocks of chills 1 are laid in the upper end of through hole casting sand type；
Step 4：Poured into a mould.
Preferably, around the chill 1 laying and through hole.
Preferably, the support tube 3 is core iron, and the chill 1 contacts placement with the core iron.
On the other hand, the present invention proposes the sand core structure that a kind of casting through hole 2 is cast, if it include through hole casting sand type with
Dry block chill 1, the outer wall core 4 that the through hole casting sand type includes support tube 3 and is wrapped in support pipe outer wall also have center to lead to
The center core 5 in hole, the length of the support tube 3 are more than or equal to the length of through hole 2, and the length of the outer wall core 4 is equal to
The length of through hole 2, the center core 5 are connected with peripheral core 6, the upper end of the through hole casting sand type set some pieces it is cold
Iron 1.
Preferably, the external diameter of outer wall core 4 is equal to the external diameter of through hole 2 to be processed, and the diameter of the support tube 3 is more than or waited
In the half diameter of through hole 2 to be processed, and it is less than the diameter of through hole 2 to be processed.
Preferably, support tube 3 is the tubular structure with through hole, and it is iron pipe, and its both ends contacts with chill 1 respectively.In
Between the through hole of support tube 3 can play thermolysis, heat is gradually transferred to the big chill 1 of thickness at both ends by iron pipe afterwards,
Heat is progressively dissipated away afterwards, and support tube 3 can play a part of support, avoid scab phenomenon, even if just in case occurring
Scab phenomenon, only outer wall core 4 can be overheated and burnt, and support tube 3 and center core 5 can stand intact, and follow-up cleaning only needs
Knock out center core 5 and take out support tube 3.
Preferably, the thickness of the chill 1 is more than or equal to the length of half through hole 2 to be processed.
Preferably, some blocks of chills 1 are a monoblock ring-type chill, and it is to be processed that its thickness is more than or equal to half
The length of through hole, its inner ring surface are in close contact with the end outer wall of support tube 3.Further, the support tube 2 is hollow
Iron pipe, center core 5 is set, the center core 5 is connected with peripheral core 6, as shown in Figure 1 in its through hole.
The better embodiment of this patent is explained in detail above, but this patent is not limited to above-mentioned embodiment party
Formula, can also be on the premise of this patent objective not be departed from one skilled in the relevant art's possessed knowledge
Various changes can be made.
Claims (9)
1. the modified technique of casting through hole casting, it is characterised in that：Comprise the following steps that：
Step 1：Manufacture diameter is more than or equal to half through-hole diameter to be processed, and less than the support of through-hole diameter to be processed
Pipe；
Step 2：In support tube periphery parcel casting model powder, the through hole casting model powder that diameter is equal to through-hole diameter to be processed is obtained
Type；
Step 3：Lay some blocks of chills respectively in the top and bottom of through hole casting sand type；
Step 4：Poured into a mould.
2. the modified technique of casting through hole casting according to claim 1, it is characterised in that：The chill laying and through hole
Around.
3. the modified technique of casting through hole casting according to claim 1, it is characterised in that：The support tube is core iron,
The chill contacts placement with the core iron.
4. the sand core structure of casting through hole casting, it is characterised in that：Including through hole casting sand type and some blocks of chills, the through hole
Casting sand type includes support tube and is wrapped in the outer wall core of support pipe outer wall, and the length of the support tube is more than or equal to through hole
Length, the length of the outer wall core is equal to the length of through hole, and the one or both ends of the through hole casting sand type set some
Block chill.
5. the sand core structure of casting through hole casting according to claim 4, it is characterised in that：The external diameter of outer wall core is equal to
The external diameter of through hole to be processed；The diameter of the support tube is more than or equal to half through-hole diameter to be processed, and less than to be added
Work through-hole diameter.
6. the sand core structure of casting through hole casting according to claim 4, it is characterised in that：Support tube is with through hole
Tubular structure, it is iron pipe, and its both ends contacts with chill respectively, and center core is set in its through hole.
7. the sand core structure of casting through hole casting according to claim 4, it is characterised in that：The thickness of the chill is more than
Or the length equal to half through hole to be processed.
8. the sand core structure of casting through hole casting according to claim 4, it is characterised in that：Some blocks of chills are one
Monoblock ring-type chill, its thickness are more than or equal to the length of half through hole to be processed, its inner ring surface and the support tube
End outer wall is in close contact.
9. the sand core structure of casting through hole casting according to claim 4, it is characterised in that：The support tube is hollow iron
Pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711189723.0A CN107855472A (en) | 2017-11-24 | 2017-11-24 | The modified technique and sand core structure of casting through hole casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711189723.0A CN107855472A (en) | 2017-11-24 | 2017-11-24 | The modified technique and sand core structure of casting through hole casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107855472A true CN107855472A (en) | 2018-03-30 |
Family
ID=61702475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711189723.0A Pending CN107855472A (en) | 2017-11-24 | 2017-11-24 | The modified technique and sand core structure of casting through hole casting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107855472A (en) |
-
2017
- 2017-11-24 CN CN201711189723.0A patent/CN107855472A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104439074A (en) | Fusible mold precision casting method | |
| CN106734886A (en) | A kind of method for preventing the formwork cracking during shell processed | |
| CN104999034B (en) | Casting method of large allowance-free pressure expander precise casting piece | |
| CN206882722U (en) | The sand core structure of casting through hole casting | |
| CN107695295A (en) | A kind of casting processing method of fusible pattern | |
| CN113305268B (en) | Casting method of 12-cubic-meter slag ladle | |
| CN101733394B (en) | Casting method of upright column of rolling mill | |
| CN108273963B (en) | Casting method for preventing shrinkage porosity defect at thick and large wall of casting | |
| CN107855472A (en) | The modified technique and sand core structure of casting through hole casting | |
| CN105880485A (en) | Turbine casing casting method | |
| CN107282891A (en) | The modified technique and sand core structure of casting through hole casting | |
| CN108127082A (en) | A kind of shell anti-deformation process | |
| CN107695302A (en) | A kind of Sand-Faced Metal Mould Casting technique for casting N-terminal end cap | |
| CN203992350U (en) | A kind of insulation casting ladle | |
| CN107377879B (en) | A kind of model casting casting method | |
| CN105522110A (en) | Process for manufacturing shell with embedded steel pipe through aluminum alloy investment casting | |
| CN208033597U (en) | A kind of composite bimetal pipe casting sandbox | |
| CN112756554B (en) | Shell making process method for preventing dewaxing, cracking and wax seepage of fused quartz mould shell | |
| CN104439147A (en) | Method for treating casting contraction cavities | |
| JPH04197570A (en) | Production of casting having heat resisting layer | |
| CN106623787A (en) | Preparation method of aluminum alloy fusible mold precise casting and applied binding agent | |
| CN208004747U (en) | A kind of simple composition metal mould | |
| CN104741579A (en) | Low-pressure casting process of cylinder | |
| CN104668469A (en) | Sand core | |
| CN105458172A (en) | Sectioning casting method for copper artwork |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180330 |