CN105057563A - Cold core sand used for long and thin type sand cores - Google Patents
Cold core sand used for long and thin type sand cores Download PDFInfo
- Publication number
- CN105057563A CN105057563A CN201510448522.2A CN201510448522A CN105057563A CN 105057563 A CN105057563 A CN 105057563A CN 201510448522 A CN201510448522 A CN 201510448522A CN 105057563 A CN105057563 A CN 105057563A
- Authority
- CN
- China
- Prior art keywords
- sand
- parts
- cold core
- core
- 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
Landscapes
- Mold Materials And Core Materials (AREA)
Abstract
The invention relates to the field of casting technologies, in particular to cold core sand used for long and thin type sand cores. The cold core sand comprises, in parts by weight, 40-60 parts of crude sand, 40-60 parts of fused ceramite and 1.55 parts of resin, wherein the sum of the parts of the crude sand and the fused ceramite is 100 parts. The resin comprises, in parts by weight, 80 parts of liquid phenolic resin and 75 parts of liquid polyisocyanate. The granularity of the fused ceramite ranges from 40 meshes to 70 meshes. The cold core sand has the beneficial effects that the cold core sand is applied to the thin and long type sand cores with the sectional areas smaller than 450 mm2 and the lengths smaller than 100 mm. The sand cores cannot deform or be broken, and the waste core rate is decreased.
Description
Technical field
The present invention relates to casting technique field, relate to a kind of cold core sand for slender type core specifically.
Background technology
For the cold core technique of slender type core, such as engine cylinder-body oil duct core uses cold core process coremaking, and Ge Jia producer is different on cold core sand formula, though have his own strong points, in casting process, the defect such as core distortion, fracture is still difficult to solution.
Summary of the invention
The object of the invention is to solve the problem, a kind of cold core sand for slender type core is provided.
In order to realize object of the present invention, the technical solution used in the present invention is:
For a cold core sand for slender type core, comprise roughing sand, nice foundry sand, resin, by weight ratio: roughing sand 40 ~ 60 parts, nice foundry sand 60 ~ 40 parts, roughing sand and nice foundry sand add up to 100 parts; Resin 1.55 parts.
Described resin is by weight ratio: liquid phenolic resin 80 parts, liquid ployisocyanate 75 parts.
The granularity of described nice foundry sand is 40 ~ 70 orders.
Beneficial effect of the present invention is: be applied to sectional area and be less than 450mm
2, length is less than the cold core of the slender type core of 100mm, and core is indeformable, do not rupture, and reduces useless core rate.
Accompanying drawing explanation
The slender type oil duct core schematic diagram that Fig. 1 applies for the present invention.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is further described:
Embodiment: see Fig. 1.
For a cold core sand for slender type core, comprise roughing sand, nice foundry sand, resin, by weight ratio: roughing sand 40 ~ 60 parts, nice foundry sand 60 ~ 40 parts, roughing sand and nice foundry sand add up to 100 parts; Resin 1.55 parts.
Described resin is by weight ratio: liquid phenolic resin 80 parts, liquid ployisocyanate 75 parts.
The granularity of described nice foundry sand is 40 ~ 70 orders.
The cold core core manufacturing craft that this patent formulation relates to is amine method cold core core manufacturing craft: namely to be blown into a kind of core manufacturing craft that triethylamine makes compound rapid solidification shaping for catalyst within several seconds or tens of second.
Cold core sand proportioning process: under the condition that cold core resin amount (addition is: liquid phenolic resin: the about 0.8%:0.75% of liquid ployisocyanate) is constant, the addition of nice foundry sand controls at 40-60%, now 4 hours tensile strength of core all increase along with nice foundry sand addition and improve, and are greater than 2.3MPa; Cold conditions bending strength > 5.5MPa; Gas forming amount all can be controlled in below 12ml/g, and maximum heat deflection is less than 0.3mm, and high temperature compression strength is now 30-40N/cm
2, above data can guarantee that reasonable in design (sectional area is less than 450mm at core procedure
2, length is less than 100mm) state under do not produce the phenomenons such as distortion, fracture.Useless core rate controls below 2%, does not occur being out of shape, rupturing the waste product caused during core cast.
In this patent technical recipe, the technical requirement of cold core roughing sand is as follows:
1, outward appearance: not containing foreign material such as shell, lime stone, stone, vegetations, not moisture cake.
2, technical requirement
What embodiments of the invention were announced is preferred embodiment, but is not limited thereto, those of ordinary skill in the art; very easily according to above-described embodiment, understand spirit of the present invention, and make different amplifications and change; but only otherwise depart from spirit of the present invention, all in protection scope of the present invention.
Claims (3)
1. for a cold core sand for slender type core, comprise roughing sand, nice foundry sand, resin, it is characterized in that: by weight ratio: roughing sand 40 ~ 60 parts, nice foundry sand 60 ~ 40 parts, roughing sand and nice foundry sand add up to 100 parts; Resin 1.55 parts.
2. the cold core sand for slender type core according to claim 1, is characterized in that: described resin by weight ratio: liquid phenolic resin 80 parts, liquid ployisocyanate 75 parts.
3. the cold core sand for slender type core according to claim 2, is characterized in that: the granularity of described nice foundry sand is 40 ~ 70 orders.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510448522.2A CN105057563A (en) | 2015-07-28 | 2015-07-28 | Cold core sand used for long and thin type sand cores |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510448522.2A CN105057563A (en) | 2015-07-28 | 2015-07-28 | Cold core sand used for long and thin type sand cores |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105057563A true CN105057563A (en) | 2015-11-18 |
Family
ID=54487198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510448522.2A Pending CN105057563A (en) | 2015-07-28 | 2015-07-28 | Cold core sand used for long and thin type sand cores |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105057563A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106141103A (en) * | 2016-08-15 | 2016-11-23 | 合肥江淮铸造有限责任公司 | A kind of casting technique of engine cylinder-body oil duct core |
| CN108213322A (en) * | 2016-12-14 | 2018-06-29 | 浙江强广剑精密铸造股份有限公司 | A kind of defeated and dispersed type precoated sand |
| CN114769501A (en) * | 2022-02-07 | 2022-07-22 | 中国第一汽车股份有限公司 | Commercial vehicle cylinder water jacket cold core and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4146526A (en) * | 1976-03-15 | 1979-03-27 | Zlobinsky Boris A | Cold-setting mixture for the production of casting moulds and cores |
| CN102000777A (en) * | 2010-12-21 | 2011-04-06 | 潍柴动力股份有限公司 | Core sand mixing process, heated core box core-making process and sand core prepared therefrom |
| CN103100647A (en) * | 2013-03-04 | 2013-05-15 | 无锡蠡湖叶轮制造有限公司 | Precoated sand for heat-resistant stainless steel casting |
| CN103691890A (en) * | 2013-12-24 | 2014-04-02 | 上海爱仕达汽车零部件有限公司 | Core manufacturing method of riser oil duct sand core during cylinder cover casting and cylinder cover casting method |
| CN104439090A (en) * | 2014-11-26 | 2015-03-25 | 山东省源通机械股份有限公司 | Manufacturing technique of high-strength single-cylinder diesel engine body |
| CN104475687A (en) * | 2014-12-31 | 2015-04-01 | 南阳飞龙汽车零部件有限公司 | Venting sand core for shell mold casting mould |
-
2015
- 2015-07-28 CN CN201510448522.2A patent/CN105057563A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4146526A (en) * | 1976-03-15 | 1979-03-27 | Zlobinsky Boris A | Cold-setting mixture for the production of casting moulds and cores |
| CN102000777A (en) * | 2010-12-21 | 2011-04-06 | 潍柴动力股份有限公司 | Core sand mixing process, heated core box core-making process and sand core prepared therefrom |
| CN103100647A (en) * | 2013-03-04 | 2013-05-15 | 无锡蠡湖叶轮制造有限公司 | Precoated sand for heat-resistant stainless steel casting |
| CN103691890A (en) * | 2013-12-24 | 2014-04-02 | 上海爱仕达汽车零部件有限公司 | Core manufacturing method of riser oil duct sand core during cylinder cover casting and cylinder cover casting method |
| CN104439090A (en) * | 2014-11-26 | 2015-03-25 | 山东省源通机械股份有限公司 | Manufacturing technique of high-strength single-cylinder diesel engine body |
| CN104475687A (en) * | 2014-12-31 | 2015-04-01 | 南阳飞龙汽车零部件有限公司 | Venting sand core for shell mold casting mould |
Non-Patent Citations (2)
| Title |
|---|
| 王伟春等: "冷芯盒树脂砂制芯工艺的应用研究", 《铸造技术》 * |
| 陈尔军等: "陶瓷砂三乙胺法冷芯盒制芯在缸体生产中的应用", 《现代铸铁》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106141103A (en) * | 2016-08-15 | 2016-11-23 | 合肥江淮铸造有限责任公司 | A kind of casting technique of engine cylinder-body oil duct core |
| CN108213322A (en) * | 2016-12-14 | 2018-06-29 | 浙江强广剑精密铸造股份有限公司 | A kind of defeated and dispersed type precoated sand |
| CN114769501A (en) * | 2022-02-07 | 2022-07-22 | 中国第一汽车股份有限公司 | Commercial vehicle cylinder water jacket cold core and preparation method thereof |
| CN114769501B (en) * | 2022-02-07 | 2024-03-15 | 中国第一汽车股份有限公司 | Commercial vehicle cylinder body water jacket cooling core and preparation method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103100647B (en) | Precoated sand for heat-resistant stainless steel casting | |
| CN105057563A (en) | Cold core sand used for long and thin type sand cores | |
| US20150048904A1 (en) | Resonance Tube, Method for Manufacturing Resonance Tube, and Cavity Filter | |
| WO2010056350A3 (en) | Methods for casting by a float process and associated appratuses | |
| CN102634728A (en) | Small square Billet continuous casting production technique of Fe-Mn-C high-manganese steel | |
| CN104959547A (en) | Flange casting process | |
| CN105562587B (en) | It is a kind of reduce casting crack molding sand and its application | |
| WO2004050738A8 (en) | Method for producing shaped bodies, particularly cores, molds and feeders for use in foundry practice | |
| MX2008016384A (en) | Method and composition of binder for manufacturing sand molds and/or cores for foundries. | |
| CN104475655A (en) | Good plasticity mold core molding sand and preparation method thereof | |
| CN109020607A (en) | A kind of dedusting ash ceramsite sand and the preparation method and application thereof | |
| CN104264108A (en) | Treatment process method for double metal compound casting junction surface | |
| CN111438333A (en) | Novel sand core for casting | |
| US10259034B2 (en) | Slurry for forming mold, mold and method for producing mold | |
| CN106077424A (en) | A kind of new instrument casting resin sand | |
| CN110479963A (en) | Sand cores of castings structure | |
| CN101921119B (en) | Environmental-friendly dry type vibrating material | |
| CN109290522A (en) | A kind of back oil road sand core of engine cylinder body casting | |
| CN104624998B (en) | A kind of especially big round billet peritectic steel function protecting material of continuous casting crystallizer | |
| CN104002372A (en) | Variable-temperature maintenance method for resin mineral composite material | |
| CN103464692B (en) | A kind of casting method of tubular cast | |
| CN103866150B (en) | A kind of preparation method of high porosity thin-wall tubular Porous Cu | |
| CN109422530B (en) | Prevent to open cracked long mouth of a river bowl portion of watering | |
| CN105174722B (en) | A kind of ceramic core material for adding the spherical powder of quartz glass | |
| CN104014734A (en) | Investment casting process of metal product |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151118 |