CN102069149A - Fiber and sand core reinforced thereby - Google Patents
Fiber and sand core reinforced thereby Download PDFInfo
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- CN102069149A CN102069149A CN 201110009557 CN201110009557A CN102069149A CN 102069149 A CN102069149 A CN 102069149A CN 201110009557 CN201110009557 CN 201110009557 CN 201110009557 A CN201110009557 A CN 201110009557A CN 102069149 A CN102069149 A CN 102069149A
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Abstract
The invention relates to a fiber and a sand core reinforced thereby, and belongs to the sand cores for casting production and raw materials thereof. The sand core reinforced by the fiber is manufactured by placing the fiber in a certain shape or a fiber product in a core box, and filling core sand around the fiber. The fiber and a reinforcing method can be used for reinforcing organic binder sand cores, silicate binder sand cores or organic binder-silicate binder composite binder sand cores.
Description
Technical field
The present invention relates to the Foundry Production material, be specifically related to a kind of core and raw material thereof that are used for Foundry Production.
Background technology
Core (comprise the sand lump in the cored-up mould, down with) is one of important mold material that obtains core cavity and profile, and during the very complicated foundry goods of production shape, core has irreplaceability usually.
In the processes such as core making, carrying, storage, installation, all need it that certain intensity, rigidity are arranged, in order to avoid be out of shape, damage.And, core also should possess good hot property, to bear the impact of casting back molten metal,, large tracts of land long-time by high-temperature liquid metal (and the solid-liquid two-phase mixture that forms in the process of setting, solid etc.) wrapped up and the inhomogeneous baptisms such as non-equilibrium stress extruding that cause that solidify of metal.
In the prior art, the main method of reply sand core strength, rigidity problem has:
Strengthen the binding agent consumption: can gain in strength, rigidity.Weak point: increase the binding agent cost; May increase gas forming amount and then increase bleb danger; May increase retained strength and then enhancing casting thermal fragmentation and risk of condensation and increase the difficulty of shaking out.
Use iron bar: the core core is inserted iron (steel) bar (rod), promotes the core holding capacity.Weak point: iron wire quantity, shape, position may be limited by to get a technology and may therefore influence and strengthen effect; The hot expansibility of iron wire and the difference of core are big, and after the casting, combining between iron wire and core may be destroyed, also may cause the core distortion, damage.
Use stud: location, support effect are better.Weak point: the coupling of stud characteristic and foundry goods characteristic, casting technique etc. requires high.
Summary of the invention
The invention provides and a kind ofly insert fiber, obtain the new material and the new method of the fiber reinforcement core of high strength, high rigidity and high combination property at the core core.
Fiber of the present invention and to strengthen core be that fiber or its goods with definite shape place core box is inserted core sand and is made core around fiber, obtains the fiber reinforcement core, and fiber quality is 0.001-10 with the ratio of the quality of sand; Fiber is a kind of in glass fibre, mineral fibres, organic fiber, metallic fiber, alumina fibre, the ceramic fibre or their binary, multicomponent mixture; Fiber is boundling or its goods of many fibers; Fiber surface is covered with identical with core binder, similar or compatible mutually binding agent to improve the associativity between itself and core sand; Fiber shape designs according to the principle of giving the good enhancing effect of core.This fiber and Enhancement Method can be used for the enhancing of organic binder bond core, silicate binder core or organic binder bond-silicate binder compound binding agent core.
The remarkable advantage of fiber of the present invention and enhancing core thereof comprises:
(1) brought into play that fibrous material is high-strength, the advantage of high-ductility, with fiber place the core core and with the core sand good combination after, can give core high strength, high rigidity.
(2) fiber is positioned at the core core, and behind the casting metals, fiber does not directly contact with metal, bad physics and chemical action can not occur.And after fiber reinforcement, the binding agent consumption in the core sand can suitably reduce, and has both saved the binding agent cost, reduces gas forming amount again and reduces the pore tendency.
(3) during sand removal, the fiber behind the experience high temperature is soft, dispersity, is easy to remove.
(4) collection of filaments and woven convenience and its easy-clear when sand removal provide possibility for reasonable, the flexible topology of fiber in core.The fiber and the fabric thereof of shapes such as wire, rope form, band shape, cloth shape, netted, cage shape, 3 D stereo shape rationally can be placed on each position that needs to strengthen core, obtain good enhancing effect.
The specific embodiment
The main mode of implementing fiber of the present invention and enhancing core thereof is: according to core self and military service characteristic, select suitable fiber, analyze and design enhanced scheme; Fibre preforms is become given shape, in case of necessity, flood, processing such as typing; Preformed fiber is put into the appropriate location of core box; Around fiber, insert core sand and make core, obtain the fiber reinforcement core.
Below in conjunction with embodiment, further specify embodiments of the present invention.
Embodiment 1
Glass fibre and enhancing precoated sand core thereof: glass fibre is worked out after twisting thread to netted, flood thermosetting phenolic resin and thermocompression forming in mould, at its surface impregnation novolac resin and complete curing agent, obtain preformed core enhancing fiber again.This fiber is put into core box, insert precoated sand around it and heating makes its curing, obtain glass fibre and strengthen the precoated sand core.
Embodiment 2
Glass fibre and enhancing furan resin-sand core thereof: in the process of filling furan resin-sand in core box, at the position that needs strengthen, it is some to place glass fiber tape, rope, cloth, net, recharge furan resin-sand up to core box is filled up, wait for that furan resin-sand is hard certainly or cure sclerosis (deciding according to the furan resin-sand characteristic), obtain glass fibre and strengthen the furan resin-sand core.
Embodiment 3
Mineral fibres and chill harden resin sand core thereof: the mineral fibres rope is compiled into the three-dimensional network shape, dipping chill harden resin and solidifying and setting.Fiber after the typing is put into core box, insert chill harden resin sand, feed the gaseous state curing agent resin sand is solidified, obtain mineral fibres and strengthen chill harden resin sand core.
Embodiment 4
Composite fibre and enhancing flax oil-sand core thereof: with metallic fiber, alumina fibre, the mixed rope of twisting with the fingers into of ceramic fibre, the dipping linseed oil is put into core box, inserts flax oil-sand around it, obtains composite fibre after the curing and strengthens flax oil-sand core.
Embodiment 5
Textile fabric and enhancing waterglass-clay-bonded sand core thereof: cotton, fiber crops, chemical fibre are mixed and twist with the fingers into rope and be woven into the cage shape, steep water glass, put into core box, around it, insert waterglass-clay-bonded sand, obtain textile fabric after the curing and strengthen waterglass-clay-bonded sand core.
Embodiment 6
Mineral fibres and reinforced epoxy sand core thereof: the mineral fibres line is woven into the three-dimensional network shape, and core box is put in the dipping Ludox and the typing that is heating and curing, and inserts epoxy resin sand around it, obtains mineral fibres reinforced epoxy sand core after the curing.
Claims (7)
1. a fiber and strengthen core is characterized in that, fiber or its goods of definite shape are placed core box, inserts core sand and makes core around fiber, obtains the fiber reinforcement core, and fiber quality is 0.001-10 with the ratio of the quality of sand.
2. fiber according to claim 1 and strengthen core is characterized in that, described fiber is a kind of in glass fibre, mineral fibres, organic fiber, metallic fiber, alumina fibre, the ceramic fibre or their binary, multicomponent mixture.
3. fiber according to claim 1 and enhancing core thereof is characterized in that described fiber is boundling or its goods of many fibers.
4. fiber according to claim 1 and strengthen core is characterized in that, described fiber is wire, rope form, band shape, cloth shape, netted, cage shape or 3 D stereo shape.
5. fiber according to claim 1 and enhancing core thereof is characterized in that, are principle to obtain good enhancing effect, determine that fiber shape and fiber are placed on the position in the core.
6. fiber according to claim 1 and enhancing core thereof is characterized in that described fiber surface is covered with identical with core binder, similar or compatible mutually binding agent.
7. fiber according to claim 1 and enhancing core thereof is characterized in that described core sand is organic binder bond sand, silicate binder sand or organic binder bond-silicate binder compound binding agent sand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110009557 CN102069149A (en) | 2011-01-18 | 2011-01-18 | Fiber and sand core reinforced thereby |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110009557 CN102069149A (en) | 2011-01-18 | 2011-01-18 | Fiber and sand core reinforced thereby |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102069149A true CN102069149A (en) | 2011-05-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110009557 Pending CN102069149A (en) | 2011-01-18 | 2011-01-18 | Fiber and sand core reinforced thereby |
Country Status (1)
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| CN (1) | CN102069149A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103286273A (en) * | 2011-12-13 | 2013-09-11 | 丹阳市精密合金厂有限公司 | Making method of ceramic core for molding of casing annular casting hollow support plate |
| CN103480801A (en) * | 2013-09-18 | 2014-01-01 | 沈阳工业大学 | Novel preparation method for casting crankshaft oil bore |
| CN104707940A (en) * | 2015-03-17 | 2015-06-17 | 大连理工大学 | Method for reinforcing strength of sand core used for car hot stamping mould and obtained by 3D (three-dimensional) printing |
| CN111644574A (en) * | 2020-06-30 | 2020-09-11 | 潍柴动力股份有限公司 | Preparation method of reinforced thin-wall sand core |
| CN111761031A (en) * | 2020-06-22 | 2020-10-13 | 共享智能铸造产业创新中心有限公司 | 3D printing method for sand core and 3D printer for casting sand core |
| CN112846143A (en) * | 2020-12-31 | 2021-05-28 | 厦门市佳嘉达机械有限公司 | High-strength and high-toughness die-casting sand core, preparation method thereof and forming process of die casting |
| CN113798441A (en) * | 2021-08-21 | 2021-12-17 | 山东燕山精密机械有限公司 | Preparation process of soluble core in precision casting wax injection procedure |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86209099U (en) * | 1986-11-13 | 1987-10-07 | 沈阳高中压阀门厂 | Centre-hollow sand core for casting with thin wall |
| CN86104203A (en) * | 1986-06-09 | 1987-12-23 | 张联懋 | The method of making core for cast without binding sand |
| JP2000225439A (en) * | 1999-02-05 | 2000-08-15 | Toyota Motor Corp | Core for casting |
-
2011
- 2011-01-18 CN CN 201110009557 patent/CN102069149A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86104203A (en) * | 1986-06-09 | 1987-12-23 | 张联懋 | The method of making core for cast without binding sand |
| CN86209099U (en) * | 1986-11-13 | 1987-10-07 | 沈阳高中压阀门厂 | Centre-hollow sand core for casting with thin wall |
| JP2000225439A (en) * | 1999-02-05 | 2000-08-15 | Toyota Motor Corp | Core for casting |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103286273A (en) * | 2011-12-13 | 2013-09-11 | 丹阳市精密合金厂有限公司 | Making method of ceramic core for molding of casing annular casting hollow support plate |
| CN103480801A (en) * | 2013-09-18 | 2014-01-01 | 沈阳工业大学 | Novel preparation method for casting crankshaft oil bore |
| CN104707940A (en) * | 2015-03-17 | 2015-06-17 | 大连理工大学 | Method for reinforcing strength of sand core used for car hot stamping mould and obtained by 3D (three-dimensional) printing |
| CN111761031A (en) * | 2020-06-22 | 2020-10-13 | 共享智能铸造产业创新中心有限公司 | 3D printing method for sand core and 3D printer for casting sand core |
| CN111761031B (en) * | 2020-06-22 | 2022-05-24 | 共享智能装备有限公司 | Sand core 3D printing method and casting sand core 3D printer |
| CN111644574A (en) * | 2020-06-30 | 2020-09-11 | 潍柴动力股份有限公司 | Preparation method of reinforced thin-wall sand core |
| CN112846143A (en) * | 2020-12-31 | 2021-05-28 | 厦门市佳嘉达机械有限公司 | High-strength and high-toughness die-casting sand core, preparation method thereof and forming process of die casting |
| CN113798441A (en) * | 2021-08-21 | 2021-12-17 | 山东燕山精密机械有限公司 | Preparation process of soluble core in precision casting wax injection procedure |
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Application publication date: 20110525 |