CN102218507A - Lost foam casting technology leading sands to be compacter - Google Patents
Lost foam casting technology leading sands to be compacter Download PDFInfo
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- CN102218507A CN102218507A CN2011101577991A CN201110157799A CN102218507A CN 102218507 A CN102218507 A CN 102218507A CN 2011101577991 A CN2011101577991 A CN 2011101577991A CN 201110157799 A CN201110157799 A CN 201110157799A CN 102218507 A CN102218507 A CN 102218507A
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Abstract
The invention discloses a lost foam casting technology leading sands to be compacter, comprising the following steps of foaming and gluing or combining, wherein in the foaming process, EPS or STMMA beads are foamed and amplified by about 30 times by a foaming machine to form raw materials for producing the mold; the raw materials for producing the mold are arranged in the cavity of the mold; and the forming equipment heats the raw materials for producing the mold in the cavity of the mold, thus forming a mold sheet; in the gluing or combining step, when the mold sheet can not form a casting model directly, a plurality of mold sheets are bonded to form a casting model cluster; and a gating system and the casting model or the casting model cluster are bonded to form a whole; subsequently the casting model or the casting model cluster is dipped and roasted; the resistance parts, at which the sands can enter or fill the casting model or the casting model cluster easily, can be determined; then the structure of the casting model or the casting model cluster is improved; and finally the processed casting model or the casting model cluster is embedded in free dry sand and is vibrated to be compact, and the metal liquid is poured to form the casting. The lost foam casting technology can reduce the sand entering and filling resistance in the vibration procedure by changing part of the structure of lost foam casting model or the casting model cluster, thus leading the sand to be compacter.
Description
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Technical field:
The present invention relates generally to jolt ramming technology in the lost foam casting, relates in particular to a kind of more lost foam casting process of consolidation of sand that makes.
Background technology:
Lost foam casting is a kind of special casting technique.The first step is foaming, and promptly foaming machine adopts steam with the molding raw material that needs in EPS or about 30 times formation of the STMMA bead foaming amplification patternmaking process to use.Second step was molding, and promptly moulding equipment adopts steam to form matrix at the die cavity heating molding raw material of mould.The 3rd step was gummed or combination, if molding can not directly form cast model, just needed bonding a plurality of matrixs to form cast model bunch together; Become whole with running gate system and cast model or cast model are bunch bonding again.The 4th step is with cast model or cast model bunch dip-coating oven dry.The 5th step, the cast model of oven dry or cast model bunch buried be placed on freely jolt ramming in the dry sand, casting of molten metal forms foundry goods again.In the lost foam casting jolt ramming process owing in advancing the sand process, be subjected to resistance, often cause the local sand of foundry goods shake consolidation not; The consequence of this problem be foundry goods shake not the consolidation corresponding site scab phenomenon appears, or casting dimension changes.Existing technology is to increase time of vibration, or the position that should not advance sand is filled up in advance with self-hardening sand (as resin sand or water-glass sand); But these all bring inconvenience to production in enormous quantities.
Summary of the invention:
The object of the invention is exactly in order to remedy the defective of prior art, a kind of more lost foam casting process of consolidation of sand that makes is provided, it reduces by the part-structure that changes disappearance cast model or cast model bunch and advances sand and back-up sand resistance in the jolt ramming operation, makes more more consolidation of sand.
The present invention is achieved by the following technical solutions:
A kind of more lost foam casting process of consolidation of sand that makes is characterized in that: carry out according to the following steps successively:
One, foaming: foaming machine amplifies about 30 times formation molding raw materials with EPS or the foaming of STMMA bead.
Two, the molding raw material is put into the die cavity of mould.
Three, former heats the molding raw material and forms matrix in the die cavity of mould.
Four, gummed or combination: when matrix can not directly form cast model, a plurality of matrixs are bonded together formed cast model bunch; Become whole with running gate system and cast model or cast model are bunch bonding again.
Five, with cast model or cast model bunch dip-coating oven dry.
Six, find and cause cast model or cast model bunch to enter the resistance position of sand and back-up sand, and described resistance position is removed.
Seven, last, the cast model handled well or cast model bunch buried be placed on freely jolt ramming in the dry sand, casting of molten metal forms foundry goods again.
A kind of more lost foam casting process of consolidation of sand that makes, it is characterized in that: cast model or cast model bunch are placed in the sandbox, advance sand from the sand inlet on cast model or cast model bunch inner chamber top, by vibratory equipment sand is constantly enriched in model or cast model bunch inner chamber, after enriching, exist in cast model or the cast model bunch inner chamber not to be and cause cast model or cast model bunch to enter the resistance position of sand and back-up sand by the position of enriching.
Advantage of the present invention is:
1, not only do not increase time of vibration but also can reduce time of vibration, enhance productivity, reduce energy consumption.
2, will not enter the sand position and fill up, and avoid causing the chiltern amount to descend with sand lump.Raise labour efficiency, save production cost.
The specific embodiment:
A kind of more lost foam casting process of consolidation of sand that makes, carry out successively according to the following steps:
One, foaming: foaming machine amplifies about 30 times formation molding raw materials with EPS or the foaming of STMMA bead.
Two, the molding raw material is put into the die cavity of mould.
Three, former heats the molding raw material and forms matrix in the die cavity of mould.
Four, gummed or combination: when matrix can not directly form cast model, a plurality of matrixs are bonded together formed cast model bunch; Become whole with running gate system and cast model or cast model are bunch bonding again.
Five, with cast model or cast model bunch dip-coating oven dry.
Six, find and cause cast model or cast model bunch to enter the resistance position of sand and back-up sand, its specific practice is: cast model or cast model bunch are placed in the sandbox, advance sand from the sand inlet on cast model or cast model bunch inner chamber top, by vibratory equipment sand is constantly enriched in model or cast model bunch inner chamber, after enriching, exist in cast model or the cast model bunch inner chamber not to be and cause cast model or cast model bunch to enter the resistance position of sand and back-up sand by the position of enriching.After finding the resistance position, staff and product design department link up and exchange, and the structure of this part are reasonably improved guaranteeing not influence under the prerequisite of properties of product; The local location of this structure can also not done a specially treated if product structure does not allow to carry out big improvement, open thin advance sand launder or little advance sand hole etc. as the part.
At last, the cast model handled well or cast model bunch buried be placed on freely jolt ramming in the dry sand, casting of molten metal forms foundry goods again.
Claims (2)
1. one kind makes the more lost foam casting process of consolidation of sand, it is characterized in that: carry out according to the following steps successively:
One, with the die cavity of EPS or STMMA bead foaming back injection mould, under the effect of high-temperature steam, forms diaphragm by expansion;
Two, bubble moulding model that the bonding one-tenth of each matrix is corresponding with the foundry goods shape, bubble moulding model and dead head model make up the bonding model cluster that becomes, and model cluster is coated with coats the oven dry processing;
Three, next, find and cause model cluster to enter the resistance position of sand and back-up sand, and described resistance position is removed;
Four, the model cluster after will handling places sandbox;
Five, in sandbox, insert dry sand, sandbox is carried out three-dimensional vibrating make the dry sand consolidation;
Six, vacuumize at sandbox top plastic covering film and to sandbox;
Seven, the zone at the casting of metals that will dissolve corresponding model cluster place in the sandbox, the model cluster gasification disappears, and the metal replacement model cluster after the condensation, obtains foundry goods.
2. a kind of more lost foam casting process of consolidation of sand that makes according to claim 1, it is characterized in that: model cluster is placed in the sandbox, advance sand from the sand inlet on model cluster inner chamber top, by vibratory equipment sand is constantly enriched in the model cluster inner chamber, after enriching, exist in the model cluster inner chamber not to be and cause model cluster to enter the resistance position of sand and back-up sand by the position of enriching.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101577991A CN102218507A (en) | 2011-06-14 | 2011-06-14 | Lost foam casting technology leading sands to be compacter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101577991A CN102218507A (en) | 2011-06-14 | 2011-06-14 | Lost foam casting technology leading sands to be compacter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102218507A true CN102218507A (en) | 2011-10-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101577991A Pending CN102218507A (en) | 2011-06-14 | 2011-06-14 | Lost foam casting technology leading sands to be compacter |
Country Status (1)
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| CN (1) | CN102218507A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102699278A (en) * | 2012-06-05 | 2012-10-03 | 巢湖市江洋船舶配件有限公司 | Casting technology of boat anchor |
| CN104226907A (en) * | 2014-09-30 | 2014-12-24 | 无锡康柏斯机械科技有限公司 | Lost foam casting process capable of compacting sand further |
| CN107377878A (en) * | 2017-08-04 | 2017-11-24 | 国网山东省电力公司临沂供电公司 | A kind of evaporative pattern ammeter housing |
| CN109966289A (en) * | 2019-01-14 | 2019-07-05 | 广东省农业科学院动物卫生研究所 | Application of the dephnetin in anti-chicken coccidiasis |
| CN114713765A (en) * | 2022-03-20 | 2022-07-08 | 晋江市煜亿机械阀业有限公司 | Flexibly-adjusted sand treatment production line |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4706732A (en) * | 1986-08-01 | 1987-11-17 | General Motors Corporation | Bore chill for lost foam casting pattern |
| US4711288A (en) * | 1987-02-02 | 1987-12-08 | General Motors Corporation | Halide treatment for aluminum lost foam casting process |
| CN1135390A (en) * | 1996-01-29 | 1996-11-13 | 南京航空航天大学 | Casting method for vanishing mould for preparation of metal-base composite-material product |
| CN1493414A (en) * | 2002-10-28 | 2004-05-05 | 王玉和 | Method of casting loading machine large speed changing box body using vanishing mould |
| JP2009022957A (en) * | 2007-07-17 | 2009-02-05 | Minoru Imai | Method for producing casting mold |
| CN101653815A (en) * | 2009-09-03 | 2010-02-24 | 颜凤娟 | Nonferrous metal lost foam casting process and device |
-
2011
- 2011-06-14 CN CN2011101577991A patent/CN102218507A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4706732A (en) * | 1986-08-01 | 1987-11-17 | General Motors Corporation | Bore chill for lost foam casting pattern |
| US4711288A (en) * | 1987-02-02 | 1987-12-08 | General Motors Corporation | Halide treatment for aluminum lost foam casting process |
| CN1135390A (en) * | 1996-01-29 | 1996-11-13 | 南京航空航天大学 | Casting method for vanishing mould for preparation of metal-base composite-material product |
| CN1493414A (en) * | 2002-10-28 | 2004-05-05 | 王玉和 | Method of casting loading machine large speed changing box body using vanishing mould |
| JP2009022957A (en) * | 2007-07-17 | 2009-02-05 | Minoru Imai | Method for producing casting mold |
| CN101653815A (en) * | 2009-09-03 | 2010-02-24 | 颜凤娟 | Nonferrous metal lost foam casting process and device |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102699278A (en) * | 2012-06-05 | 2012-10-03 | 巢湖市江洋船舶配件有限公司 | Casting technology of boat anchor |
| CN104226907A (en) * | 2014-09-30 | 2014-12-24 | 无锡康柏斯机械科技有限公司 | Lost foam casting process capable of compacting sand further |
| CN107377878A (en) * | 2017-08-04 | 2017-11-24 | 国网山东省电力公司临沂供电公司 | A kind of evaporative pattern ammeter housing |
| CN109966289A (en) * | 2019-01-14 | 2019-07-05 | 广东省农业科学院动物卫生研究所 | Application of the dephnetin in anti-chicken coccidiasis |
| CN109966289B (en) * | 2019-01-14 | 2021-10-26 | 广东省农业科学院动物卫生研究所 | Application of daphnetin in resisting chicken coccidiosis |
| CN114713765A (en) * | 2022-03-20 | 2022-07-08 | 晋江市煜亿机械阀业有限公司 | Flexibly-adjusted sand treatment production line |
| CN114713765B (en) * | 2022-03-20 | 2024-02-23 | 晋江市煜亿机械阀业有限公司 | Flexible-adjustment sand treatment production line |
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Application publication date: 20111019 |