CN104550720A - Shell mold casting method - Google Patents
Shell mold casting method Download PDFInfo
- Publication number
- CN104550720A CN104550720A CN201310493691.9A CN201310493691A CN104550720A CN 104550720 A CN104550720 A CN 104550720A CN 201310493691 A CN201310493691 A CN 201310493691A CN 104550720 A CN104550720 A CN 104550720A
- Authority
- CN
- China
- Prior art keywords
- shell
- mold
- sand
- casting method
- phenolic resin
- 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
- B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
- B22C1/16—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents
- B22C1/20—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of organic agents
- B22C1/22—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of organic agents of resins or rosins
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Mold Materials And Core Materials (AREA)
Abstract
The invention discloses a shell mold casting method based on multiple different shell-making materials namely a ceramic mold, a resin sand mold and a metal oxide mold. A phenolic resin sand shell mold casting method is mainly discussed herein. Compared with the other shell-making materials, the resin sand mold is low in raw material cost and meets requirements for mass production. The phenolic resin sand shell mold casting method comprises the following steps: combining fine silica sand, a phenolic resin adhesive and the like together, and then pouring the combined product into a heating mold, so that a mold-making material is heated; adhering sands together by resin fusion; finally performing curing molding. By utilizing a technology, near net-shaped castings such as steel, iron, aluminum, magnesium alloy and copper alloy with accurate dimensions and high surface quality can be produced.
Description
Technical field
The invention belongs to casting technology field, be specifically related to a kind of shell moulded casting method.
Background technology
Along with developing rapidly of foundry engieering, and require constantly to improve to foundry goods mechanical performance and dimensional accuracy etc., the demand how obtaining near net-shaped foundry goods is more and more stronger.Conventional cast technology acuracy is inadequate, and the foundry goods made needs subsequent treatment, and production stage is loaded down with trivial details.
Summary of the invention
In order to overcome the above-mentioned technical problem that prior art field exists, the object of the invention is to, provide a kind of shell moulded casting method, foundry goods mechanical performance and dimensional accuracy improve.
Shell moulded casting method provided by the invention, comprises the following steps:
(1) carry out heat coating, sand grains is heated to more than the melting temperature of phenolic resins;
(2) be mixed together with adhesive phenolic resin, make adhesive phenolic resin be coated on sand grain surface;
(3) add the solvent-urotropine firming agent being added with water, carry out last mixing and cooling, make sand grains be separated non-caked one-tenth block, remove the sand lump of bonding, through Screening Treatment, remaining peritonaeum sand just can be used as shell sand for subsequent use;
(4) finally put into core, by upper and lower two and half shell moulds, be bonded to an overall shell mould with binding agent, then just can pour into a mould.
Shell moulded casting method provided by the invention, its beneficial effect is, by in the mould of shell sand press-in heating, mould comprises bolster and apperance, and mould is heated to 230 ~ 315 DEG C of temperature usually, and the resin like this on the precoated sand of model starts fusing, flowing and puts up a bridge, simultaneously because curing agent resolves into formaldehyde and ammonia, formaldehyde participates in the polymerization Ligature of resin, makes resin have thermosetting, causes the sand grains near model to be consolidated into like this and has certain thickness shell mould.Unnecessary unconsolidated sand grains is removed, shell mould is put into a heating mantles and continues to be heating and curing, guarantee that shell mould intensity is even on whole thickness x cross sectional, thus make shell mould intensity meet whole accurate process for making shell requirement.Adopt similar approach, also can make the thin-walled shell core that core is hollow.
Detailed description of the invention
Below in conjunction with an embodiment, shell moulded casting method provided by the invention is described in detail.
Embodiment
The shell moulded casting method of the present embodiment, comprises the following steps:
(1) carry out heat coating, sand grains is heated to more than 150 DEG C, phenolic resins;
(2) be mixed together with adhesive phenolic resin, make adhesive phenolic resin be coated on sand grain surface;
(3) add the solvent-urotropine firming agent being added with water, carry out last mixing and cooling, make sand grains be separated non-caked one-tenth block, remove the sand lump of bonding, through Screening Treatment, remaining peritonaeum sand just can be used as shell sand for subsequent use;
(4) finally put into core, by upper and lower two and half shell moulds, be bonded to an overall shell mould with binding agent, then just can pour into a mould.
Claims (1)
1. a shell moulded casting method, is characterized in that: comprise the following steps:
Carry out heat coating, sand grains is heated to more than the melting temperature of phenolic resins;
Be mixed together with adhesive phenolic resin, make adhesive phenolic resin be coated on sand grain surface;
Add the solvent-urotropine firming agent being added with water, carry out last mixing and cooling, make sand grains be separated non-caked one-tenth block, remove the sand lump of bonding, through Screening Treatment, remaining peritonaeum sand just can be used as shell sand for subsequent use;
Finally put into core, by upper and lower two and half shell moulds, be bonded to an overall shell mould with binding agent, then just can pour into a mould.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310493691.9A CN104550720A (en) | 2013-10-21 | 2013-10-21 | Shell mold casting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310493691.9A CN104550720A (en) | 2013-10-21 | 2013-10-21 | Shell mold casting method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104550720A true CN104550720A (en) | 2015-04-29 |
Family
ID=53068383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310493691.9A Pending CN104550720A (en) | 2013-10-21 | 2013-10-21 | Shell mold casting method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104550720A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103949585A (en) * | 2014-05-21 | 2014-07-30 | 贵阳百德铸造有限公司 | Precoated sand shell mold forming method |
| CN107154605A (en) * | 2016-03-02 | 2017-09-12 | 矢崎总业株式会社 | The manufacture method of Belt connector box and Belt connector box |
| CN108607957A (en) * | 2018-04-19 | 2018-10-02 | 句容市有色金属铸造厂 | Metal sand mould casting method |
-
2013
- 2013-10-21 CN CN201310493691.9A patent/CN104550720A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103949585A (en) * | 2014-05-21 | 2014-07-30 | 贵阳百德铸造有限公司 | Precoated sand shell mold forming method |
| CN107154605A (en) * | 2016-03-02 | 2017-09-12 | 矢崎总业株式会社 | The manufacture method of Belt connector box and Belt connector box |
| CN107154605B (en) * | 2016-03-02 | 2019-03-19 | 矢崎总业株式会社 | The manufacturing method of Belt connector box and Belt connector box |
| CN108607957A (en) * | 2018-04-19 | 2018-10-02 | 句容市有色金属铸造厂 | Metal sand mould casting method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102806310B (en) | Metal component casting process | |
| CN102343415B (en) | Casting coated sand suitable for selective laser sintering forming and manufacturing method thereof | |
| CN102896280B (en) | Casting method of automobile axle housing | |
| CN102921902B (en) | Composite shaping technique method of iron pattern coated sand and iron type core assembly | |
| CN101927318A (en) | High strength precoated sand | |
| CN103223466A (en) | Rapid metal die manufacturing method for turbine blades | |
| CN103170578A (en) | Ceramic type precise casting method | |
| CN104148583A (en) | Investment casting method | |
| CN104745917A (en) | Casting process for crankshaft | |
| CN108751949A (en) | A kind of manufacturing method of composite ceramic core | |
| CN104550720A (en) | Shell mold casting method | |
| CN102847907B (en) | Disposable chilling block and manufacturing method thereof | |
| CN104292767B (en) | Vacuum casting mold material used for electrical insulation parts, and preparation method of mold | |
| CN103506573A (en) | Casting method for complex sand core integrating | |
| CN104043784A (en) | Overflow valve casting mold and casting technique | |
| CN104550715A (en) | Method for manufacturing integral casting metal mould | |
| CN109774130A (en) | A kind of 3D printing forming graphite chill and preparation method thereof | |
| CN105562618B (en) | The preparation method of brake disc | |
| CN108213322A (en) | A kind of defeated and dispersed type precoated sand | |
| CN105312497A (en) | Metal member casting technology | |
| CN102756094A (en) | Casting process for cylinder sleeves | |
| CN104550700A (en) | Cold mold casting method of rubber | |
| CN104475680A (en) | Method for precisely casting cylinder head | |
| CN104107880A (en) | Aluminum alloy electromagnetic metal shell mold casting process | |
| CN103722126A (en) | Demoulding method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150429 |