CN105834368B - A kind of casting ball clay sprue cup and preparation method thereof - Google Patents

A kind of casting ball clay sprue cup and preparation method thereof Download PDF

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Publication number
CN105834368B
CN105834368B CN201610408253.1A CN201610408253A CN105834368B CN 105834368 B CN105834368 B CN 105834368B CN 201610408253 A CN201610408253 A CN 201610408253A CN 105834368 B CN105834368 B CN 105834368B
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sprue cup
clay
ball clay
mesh
casting
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CN201610408253.1A
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CN105834368A (en
Inventor
马中全
潘悦飞
吴军
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Shandong Jianzhu University
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Shandong Jianzhu University
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    • 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
    • B22C9/082—Sprues, pouring cups
    • 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

Abstract

The invention discloses a kind of casting ball clay sprue cup and preparation method thereof, solves the problems, such as that current sand mold runner cup influences casting quality and reduces casting cost, casting quality can be effectively improved.Its ingredient is：Ball clay, smolmitza, flint clay and a small amount of water.Production method：It, using flint clay as auxiliary material, is molded using ball clay and smolmitza as base-material using powder metallurgic method, and after being sintered in 1250 DEG C~1320 DEG C stoves, furnace cooling is made；By material mixture ratio volumeter, the ball clay of 60~80 mesh accounts for 45%~50%, and the smolmitza of 60~80 mesh accounts for 30%~35%, and the flint clay of≤1mm particles accounts for 18%~20%.

Description

A kind of casting ball clay sprue cup and preparation method thereof
Technical field
The present invention relates to a kind of casting ball clay sprue cups and preparation method thereof.
Background technology
Sprue cup is the basic component part for foundry engieering, is especially had with the development of metallurgical industry extremely closely Relationship, be one of the important composition component of smelting process equipment.Sprue cup is mainly used for that molten metal is guided smoothly to flow into directly Running channel and enter mould cavity, existing sprue cup is mainly that sand mold is made, and is easy to make casting to generate gas in casting process The defects of hole, trachoma, splashings, slag blister, shrinkage cavity, crackle and misrun, affects the product quality of casting, and is closed in cast aluminum When golden casting, it is not possible to Reusability, it is disposable just useless.
Invention content
The purpose of the present invention is exactly to solve the above-mentioned problems, to provide a kind of casting ball clay sprue cup and its making side Method solves the problems, such as that current sand mold runner cup influences casting quality and reduces casting cost, while can also effectively improve and pour Note quality.
To achieve the goals above, the present invention adopts the following technical scheme that：
A kind of casting ball clay sprue cup, each raw material volumeter ratio are：The ball clay 45% of 80~100 mesh of granularity ~50%, the smolmitza 30%~35% of 60~80 mesh, the flint clay 18%~20% of granularity≤1mm.
It is preferred that：A kind of casting ball clay sprue cup, each raw material volumeter ratio are：The ball of 80~100 mesh of granularity is viscous Soil 48%, the smolmitza 32% of 60~80 mesh, the flint clay 20% of granularity≤1mm.
It is a kind of to cast the production method for using ball clay sprue cup, be by volumeter ratio：The ball of 80~100 mesh of granularity is viscous The flint clay 18%~20% of soil 45%~50%, the smolmitza 30%~35% of 60~80 mesh, granularity≤1mm mixes, and uses Powder metallurgic method is molded, and is made after being then sintered within the scope of 1250 DEG C~1300 DEG C.
It is preferred that：Igloss ratio≤13% after the sintering, bulk density are >=2.65g/cm3, apparent porosity is 18.65%.
It is preferred that：The sintering temperature is 1275 ± 10 DEG C.
A kind of production method of casting ball clay sprue cup, is as follows：
(1) three kinds of materials are poured into sand mixer respectively in corresponding ratio, machine carry out be uniformly mixed 5~ Then 8min sprays a small amount of water (preferably when being stirred again：The amount that water is added is by weight about 5~6%), mixing 5~ 10min is fond of tranquility with sealing cover and is set (preferably：It is placed on calm place and places 15~20h)；
(2) material mixed is packed into mold (mold of sprue cup has been carried out according to required size in advance), in four column pressures It is pressed on power machine；
(3) electric drier is dried (preferably：50~70 DEG C of drying temperature, 6~8h of drying time)；
(4) product after drying is put into high temperature sintering furnace and is sintered with stove heat, 1275 ± 10 DEG C of sintering temperature.
Beneficial effects of the present invention：
The present invention uses ball clay, smolmitza and flint clay for raw material, repressed molding, then using high-temperature firing, Firing temperature is 1250 DEG C~1300 DEG C, and finished product refractoriness can reach 1610 DEG C~1770 DEG C.
The sprue cup of the present invention is as shown in Fig. 2, anti-slag erosion, slows down the formation of reaction metamorphic layer；Intensity is high, resistance to erosion；It is resistance to Thermal shocking is resisted in thermal shock；Thermoplasticity is good under high temperature, buffers thermal stress, few dry slag.It can be anti-when especially pouring into a mould Al-alloy parts It is multiple to use.
Description of the drawings
Fig. 1 is the one of size of sprue cup prepared by the present invention；
Fig. 2 is the material object of the sprue cup prepared by the present invention.
Specific implementation mode
Embodiment 1
Using ball clay and smolmitza as major ingredient, using flint clay as auxiliary material, be molded using powder metallurgic method, 1250 DEG C~ It is made after being sintered within the scope of 1300 DEG C；Wherein, based on ingredient different capabilities ratio, the ball clay 45% of the mesh of 80 mesh~100~ 50%, 60 mesh~80 purposes black viscous 30%~35%, the flint clay 18%~20% of≤1mm particles.
Its igloss ratio≤13% after sintering, bulk density are >=2.65g/cm3, apparent porosity 18.65%, product is normal Warm compressive resistance 16.38MPa, contains SiO258%, Al2O335%, remaining is such as Fe2O3、TiO2Equal impurity.In finished size tolerance Hole, is highly no more than the 1% of drawing requirement at outer circle.
Embodiment 2
A kind of casting ball clay sprue cup, each raw material volumeter ratio are：The ball clay of 80~100 mesh of granularity 45%, the smolmitza 35% of 60~80 mesh, the flint clay 20% of granularity≤1mm, preparation method：Each raw material is mixed, using powder Last metallurgy method molding, is made after being then sintered within the scope of 1250 DEG C.
Embodiment 3
A kind of casting ball clay sprue cup, each raw material volumeter ratio are：The ball clay of 80~100 mesh of granularity 50%, the smolmitza 32% of 60~80 mesh, the flint clay 18% of granularity≤1mm, preparation method：Each raw material is mixed, using powder Last metallurgy method molding, is made after being then sintered within the scope of 1300 DEG C.
Embodiment 4
A kind of casting ball clay sprue cup, each raw material volumeter ratio are：The ball clay of 80~100 mesh of granularity 50%, the smolmitza 30% of 60~80 mesh, the flint clay 20% of granularity≤1mm, preparation method：Each raw material is mixed, using powder Last metallurgy method molding, is made after being then sintered within the scope of 1300 DEG C.
Embodiment 5
A kind of casting ball clay sprue cup, each raw material volumeter ratio are：The ball clay of 80~100 mesh of granularity 48%, the smolmitza 32% of 60~80 mesh, the flint clay 20% of granularity≤1mm.
Performance verification is tested：
1, experimental facilities:
63TFour column press, material universal testing machine, RVS high temperature sintering furnaces, S110 type rotator mixers, drying oven etc..
2, experimental procedure：
(1) three kinds of materials are poured into sand mixer respectively in the ratio in embodiment 5, machines and carries out being uniformly mixed 5 Then~8min sprays minimal amount of water when being stirred and (observes mulling state by rule of thumb, be careful not to occur on surface again Caking phenomenon, the amount by weight about 5~6% of water, the i.e. dosage of water are the 5~6% of material quality), mix 5~10min.By its Mixture pours into container (number), is covered with plastic cloth, is placed on calm place and places 15~20h.
(2) by the material mixed loading mold, (mold of sprue cup has been carried out according to required size in advance, as shown in Figure 1 Size), be pressed on four column press.
(3) qualified compacting product answer pallet number, fill in die mould record, electric drier is sent to dry.Compacting product drying temperature 50~70 DEG C of degree, 6~8h of drying time.
(4) product after drying is put into high temperature sintering furnace and is sintered with stove heat.1275 ± 10 DEG C of sintering temperature, temperature control With silicon-controlled voltage regulation automatic control, monitored with 1 potential difference meters of UJ3-.
(5) five samples are distinguished into compression strength experiment：Sprue cup is lain in the operation interval of universal testing machine, use is micro- Machine control operation is pressurizeed, until generating crack, the compression strength value at room temperature of the screen display product.This examination It is height 80mm, the cone cylinder formula sprue cup of wall thickness 10mm, upper bore 100mm, lower relative aperture 60mm to test with sprue cup size.Different Wall thickness compression strength is different.
(6) bulk density of product measures density p=G/V with JG85 type balances.
(7) it is poured into a mould with 1380 DEG C of gray iron metal liquid, the situation of change (see the table below) of observation sprue cup inner wall leaching corrosion.
(8) sample is heated to 850 DEG C, be then placed in cold water, repeatedly twice.Observe the variation (see the table below) of shape.
Ball clay is that main material makes sprue cup Comparison of experiment results
Although the above-mentioned specific implementation mode to the present invention is described, not to the limit of the scope of the present invention System, those skilled in the art should understand that, based on the technical solutions of the present invention, those skilled in the art need not pay Go out various modifications or changes that creative work can be made still within protection scope of the present invention.

Claims (9)

1. a kind of casting ball clay sprue cup, it is characterized in that：Each raw material volumeter ratio is：The ball of 80~100 mesh of granularity Clay 45%~50%, the smolmitza 30%~35% of 60~80 mesh, the flint clay 18%~20% of granularity≤1mm；The raw material mixing It uses powder metallurgic method to be molded afterwards, is made after being then sintered within the scope of 1250 DEG C~1300 DEG C.
2. a kind of casting ball clay sprue cup as described in claim 1, it is characterized in that：Each raw material volumeter ratio is： The ball clay 48% of 80~100 mesh of granularity, the smolmitza 32% of 60~80 mesh, the flint clay 20% of granularity≤1mm.
3. casting ball clay sprue cup as described in claim 1, it is characterized in that：The igloss ratio of sprue cup after sintering≤ 13%。
4. casting ball clay sprue cup as described in claim 1, it is characterized in that：After sintering the bulk density of sprue cup be >= 2.65g/ cm3, apparent porosity 18.65%.
5. casting ball clay sprue cup as described in claim 1, it is characterized in that：Sintering temperature is 1275 ± 10 DEG C.
6. a kind of production method of casting ball clay sprue cup as described in claim 1, it is characterized in that：Specific steps are such as Under：
（1）Three kinds of materials are poured into sand mixer respectively in corresponding ratio, machines and carries out 5 ~ 8min of mixing, it is equal to mixing Even raw material sprays a small amount of water and is stirred again, stirs 5 ~ 10min, sealing cover, which is fond of tranquility, to be set；
（2）The material mixed loading mold is pressed on four column press；
（3）Product is put into electric drier and is dried；
（4）Product after drying is put into high temperature sintering furnace and is sintered with stove heat, 1275 ± 10 DEG C of sintering temperature.
7. production method as claimed in claim 6, it is characterized in that：Step（1）Middle stand places 15 to be placed on calm place ~20h.
8. production method as claimed in claim 6, it is characterized in that：Step（1）The middle water and the weight ratio of raw material of being added is 5-6%.
9. production method as claimed in claim 6, it is characterized in that：Step（3）The temperature of middle drying is 50~70 DEG C, when drying Between 6~8h.
CN201610408253.1A 2016-06-12 2016-06-12 A kind of casting ball clay sprue cup and preparation method thereof Active CN105834368B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106270396B (en) * 2016-09-30 2019-03-01 常州万兴纸塑有限公司 Pouring channel tube is used in casting
CN110523925A (en) * 2019-09-30 2019-12-03 西安皓森精铸有限公司 Sprue cup model and its application method for model casting

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5502013A (en) * 1991-05-08 1996-03-26 James; Gilbert Method for making a smooth-surface ceramic
US5731250A (en) * 1996-12-02 1998-03-24 Norton Chemical Process Products Corporation Corrosion resistant ceramic bodies
CN1486957A (en) * 2003-08-08 2004-04-07 王黎明 Fireproof floor tile
CN101644358A (en) * 2009-08-21 2010-02-10 于海峰 Novel energy-saving pouring gate pipe
CN103171027A (en) * 2011-12-22 2013-06-26 辽宁法库陶瓷工程技术研究中心 Preparation method for circular type ceramic sprue cup in machine wheel forming mode
CN203418086U (en) * 2013-07-24 2014-02-05 成都锦兴机电有限责任公司 Recycling sprue cup for lost foam casting
CN104529480A (en) * 2014-12-03 2015-04-22 河南三松瓷业有限公司 Production method of mechanically press-molded high-temperature baffle brick
CN104671800A (en) * 2013-12-03 2015-06-03 辽宁法库陶瓷工程技术研究中心 Production method of high-heat stability ceramic pouring cup

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104774021A (en) * 2015-04-10 2015-07-15 辉煌水暖集团有限公司 Bonding clay used for kiln refractory bricks, and preparation process thereof

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5502013A (en) * 1991-05-08 1996-03-26 James; Gilbert Method for making a smooth-surface ceramic
US5731250A (en) * 1996-12-02 1998-03-24 Norton Chemical Process Products Corporation Corrosion resistant ceramic bodies
CN1486957A (en) * 2003-08-08 2004-04-07 王黎明 Fireproof floor tile
CN101644358A (en) * 2009-08-21 2010-02-10 于海峰 Novel energy-saving pouring gate pipe
CN103171027A (en) * 2011-12-22 2013-06-26 辽宁法库陶瓷工程技术研究中心 Preparation method for circular type ceramic sprue cup in machine wheel forming mode
CN203418086U (en) * 2013-07-24 2014-02-05 成都锦兴机电有限责任公司 Recycling sprue cup for lost foam casting
CN104671800A (en) * 2013-12-03 2015-06-03 辽宁法库陶瓷工程技术研究中心 Production method of high-heat stability ceramic pouring cup
CN104529480A (en) * 2014-12-03 2015-04-22 河南三松瓷业有限公司 Production method of mechanically press-molded high-temperature baffle brick

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