CN111496188A - Structure of riser sleeve in sand mould for preventing molten iron leakage - Google Patents
Structure of riser sleeve in sand mould for preventing molten iron leakage Download PDFInfo
- Publication number
- CN111496188A CN111496188A CN201910106629.7A CN201910106629A CN111496188A CN 111496188 A CN111496188 A CN 111496188A CN 201910106629 A CN201910106629 A CN 201910106629A CN 111496188 A CN111496188 A CN 111496188A
- Authority
- CN
- China
- Prior art keywords
- riser
- molten iron
- riser sleeve
- sleeve
- outer die
- 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
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
- B22C9/088—Feeder heads
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention relates to a structure of a riser sleeve for preventing molten iron leakage in a sand mold, wherein a total of 18 risers are used for a casting of an exhaust manifold and a volute processed by the method, and the riser sleeve is additionally arranged outside the riser for enhancing the heat preservation and saving the molten iron. However, molten iron leaks to the outer die space from the matching part of the riser bush and the outer die during use, and the waste of the molten iron is increased. The riser sleeve is changed into a flange edge arranged at the end part, the thickness of the flange is in interference fit with an outer die, meanwhile, the contact part of the riser sleeve and the feeding part of a casting is also changed into a step layer, and a sealing structure is additionally arranged, so that the leakage phenomenon is avoided in use, molten iron is saved, and the feeding effect of the riser is improved.
Description
Technical Field
The matching precision of the riser sleeve and the outer die of the feeding riser of the casting industrial model process is improved, and the structure for preventing molten iron from leaking into an outer die hole from a gap is provided.
Background
A casting piece of a turbocharger connecting exhaust manifold of a BogeWarner company accepted by the company is made of 53031016083 volute manifolds made of high-nickel cast iron, two exhaust manifold volutes are arranged on a die plate, 18 riser sleeves sharing a feeding head are adopted, and the riser sleeves are adopted, so that the cooling speed of the riser can be reduced, the feeding function of the riser is enhanced, and precious high-nickel molten iron can be saved. However, when the riser bush is used, a contact gap is easily formed between the riser bush and the outer die in a matching manner, and molten iron leaks from the gap between the riser bush and the outer die when the molten iron is filled into the mold and flows to the space of the outer die, so that the usage amount of the high-nickel iron water is increased.
Disclosure of Invention
The invention improves the contact position precision of the riser sleeve and the external mold, and adopts the interference design size to ensure that molten iron cannot leak out of the riser sleeve when the casting mold is filled.
The technical scheme is that the end part of the riser bush is additionally provided with a flange end face, the thickness of the flange is in interference fit with an outer die, the interference magnitude is controlled to be 0.5-1.5mm, and a step of 5 × 5 is additionally arranged on the inner opening of the flange and is connected with a casting feeding part, so that a layer of sealing and leakage-proof structure is additionally arranged between the riser bush and the casting.
The improved mould has the remarkable effects that when the sand mould is filled, the contact end part of the riser and the riser sleeve and the contact part of the riser sleeve and the outer mould can both prevent molten iron from leaking, so that the high-nickel alloy molten iron is really saved, and the feeding effect of the riser is improved.
Drawings
Figure 1, a cross-sectional view of a modified riser sleeve.
Wherein: 1. riser sleeve 2, riser 3, external mold 4, riser sleeve flange 5, riser sleeve inner hole step layer 6, casting 7, external mold 8 and core mold
Detailed Description
The thickness of the flange edge 4 at the end part of the riser bush 1 and the interference magnitude of the external mold 3 are 0.5-1.5mm, a step layer 5 of 5 × 5 is formed in the inner hole of the riser bush 1 and is matched with the feeding part of a casting, so that after the riser bush 1 is assembled, molten iron of the riser 2 cannot leak to the space of the external mold 3 through a gap.
Claims (1)
1. A structure for sleeving a riser in a sand mold to prevent molten iron leakage is characterized in that the flange edge at the end of the riser sleeve is made to have an interference magnitude of 0.5-1.5mm with an outer mold, a step layer of 5 × 5mm is made in an inner hole of the riser sleeve to be matched with a casting feeding part, and molten iron of the riser cannot leak out from a gap after the riser sleeve is assembled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910106629.7A CN111496188A (en) | 2019-01-30 | 2019-01-30 | Structure of riser sleeve in sand mould for preventing molten iron leakage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910106629.7A CN111496188A (en) | 2019-01-30 | 2019-01-30 | Structure of riser sleeve in sand mould for preventing molten iron leakage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111496188A true CN111496188A (en) | 2020-08-07 |
Family
ID=71877356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910106629.7A Pending CN111496188A (en) | 2019-01-30 | 2019-01-30 | Structure of riser sleeve in sand mould for preventing molten iron leakage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111496188A (en) |
-
2019
- 2019-01-30 CN CN201910106629.7A patent/CN111496188A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107088645B (en) | Casting mold for solving shrinkage porosity inside pressure shell | |
| CN113441681B (en) | Sand-coated sand casting die for multi-way valve sand mold | |
| CN101693292B (en) | Whole embedding method for sealing valve body | |
| CN101130206A (en) | Method for casting vermicular cast iron casting parts | |
| KR100538284B1 (en) | Casting mould and a method for manufacturing metallic hollow castings and hollow castings | |
| CN104999037A (en) | Concreting system for thin-walled cylindrical part and precision casting formation method | |
| CN106180566A (en) | A kind of manufacturing technique method of engine air door closure casting | |
| CN109332587B (en) | Sand mould for high nickel alloy butterfly valve body | |
| KR20110063107A (en) | A mold for gravity pressure casting | |
| CN111496188A (en) | Structure of riser sleeve in sand mould for preventing molten iron leakage | |
| CN108500212A (en) | A kind of water cooling turbine case and its casting technique | |
| CN211276445U (en) | Roller sheet casting device | |
| CN210059720U (en) | Oil pump cover mould for automobile transmission | |
| CN110560639A (en) | Ingate structure for preventing shrinkage porosity of cylinder pouring system | |
| CN201455187U (en) | Sand core structure of double-airway exhaust pipe casting | |
| CN209614141U (en) | A kind of riser buss anti-structure metal run out in sand mold | |
| CN201537678U (en) | Vacuum heat insulation central gate bushing | |
| CN209849862U (en) | Mould positioning structure of built-in steel bushing aluminum casting | |
| CN116329482A (en) | Alloy for marine diesel engine cylinder sleeve and casting method thereof | |
| CN210615019U (en) | Casting mold for inducer | |
| CN208644010U (en) | Shell mould mould assembly positioning leak-proof fastening structure | |
| CN202824603U (en) | Improved die-casting mould cooling water way structure | |
| CN207770766U (en) | A kind of oil sump processing mold | |
| TWI714158B (en) | Manufacturing method of water-cooled cylinder | |
| CN206952100U (en) | A kind of camshaft casting die |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |