CN203887158U - Easily-fractured flow gate for cleaning precision castings easily - Google Patents
Easily-fractured flow gate for cleaning precision castings easily Download PDFInfo
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- CN203887158U CN203887158U CN201420165068.0U CN201420165068U CN203887158U CN 203887158 U CN203887158 U CN 203887158U CN 201420165068 U CN201420165068 U CN 201420165068U CN 203887158 U CN203887158 U CN 203887158U
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- ingate
- cylindrical
- flow gate
- annular breach
- cylindrical flow
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Abstract
The utility model belongs to the technical field of casting and provides an easily-fractured flow gate for cleaning precision castings easily. The easily-fractured flow gate mainly comprises cylindrical flow gate bodies, wherein one ends of the cylindrical flow gate bodies are connected with a gate stick, and the other ends of the cylindrical flow gate bodies are connected with castings; sunk annular notches I are radially formed in the upper edges of the cylindrical flow gate bodies, the longitudinal cross sections of the annular notches I are V-shaped, the annular notches I and the cylindrical flow gate bodies are coaxially arranged, the area of the cross section of the bottommost part of each annular notch I in the corresponding cylindrical flow gate body is equal to 40% of the area of the cross section of the cylindrical flow gate body, and each annular notch I forms an included angle of 60-90 degrees. Compared with the prior art, the novel easily-fractured flow gate has the advantages of simple process, convenience in operation, high operating efficiency and low production cost, and the castings can be directly knocked down without cutting.
Description
Technical field
The utility model belongs to casting technology field, is specifically related to a kind of easily broken ingate that is easy to precision castings cleaning.
Background technology
Precision-investment casting refers to fusible material makes meltability model, conventional wax-pattern, apply the special fireproof coating of some layers thereon, through super-dry and sclerosis, form after a whole shell, with steam or hot water, from shell, melt model again, then shell is placed in to sandbox, in its surrounding, fill dry moulding, finally shell is put into roaster through high-temperature roasting, shell is after roasting, in casting molten metal wherein and obtain foundry goods, after foundry goods forms, the parts that are connected between foundry goods and gate stick are called ingate.
What precision-investment casting was produced conventionally is all the light casting that volume is little, lightweight, batch is large.Concerning such light casting, the expense of cutting cleaning ingate is very surprising.Nearly 1000～2000 of precision castings per ton, cuts the acetylene of 1 ton of precision castings consumption and the value of oxygen and is about 1200 yuan of left and right according to measuring and calculating.Cutting cleaning up cost is high, and operating environment is poor, and cleaning efficiency is low.
Utility model content
The above-mentioned defect existing for solving prior art, the purpose of this utility model is to provide a kind of technique simple, easy to operate, and operating efficiency is high, and production cost is low, need not cut, and foundry goods can directly strike the new ingate that gets off.
The utility model is that the technical scheme that its technical problem of solution is taked is: design a kind of easily broken ingate that is easy to precision castings cleaning, comprise cylindrical ingate, one end of described cylindrical ingate connects gate stick, and the other end connects foundry goods; Wherein, on described cylindrical ingate, be disposed radially the annular breach one of a depression, the longitudinal section of described annular breach one is V-shaped, described annular breach one coaxially arranges with cylindrical ingate, the cross-sectional area that is positioned at described annular breach one bottom position on described cylindrical ingate equals 40% of described cylindrical ingate cross-sectional area, and the formed angle of described annular breach one is 60～90 °.
Manufacture the above-mentioned method that is easy to the easily broken ingate of precision castings cleaning, comprise the following steps:
1. manufacture wax-pattern, when manufacturing wax-pattern, on the cylindrical ingate of wax-pattern, be disposed radially the annular breach two of a depression, the longitudinal section of described annular breach two is V-shaped, described annular breach two coaxially arranges with the cylindrical ingate of wax-pattern, the cross-sectional area that is positioned at described annular breach two bottom positions on the cylindrical ingate of described wax-pattern equal described wax-pattern cylindrical ingate cross-sectional area 40%, the formed angle of described annular breach two is 60～90 °, and wax-pattern manufacture completes;
2. prepare shell, 1. on the wax-pattern of making in step, apply some layers of fireproof coating, through super-dry and sclerosis, form after a whole shell, with steam or hot water, from shell, melt wax-pattern again, obtain shell, now in the housing of the ingate part of shell, be formed with the corresponding annular ring of annular breach two of described depression protruding;
3. cast casting, the shell that step is made in is 2. connected on sprue, and the metal liquid of pouring into after dissolving is cast, after metal liquid solidifies, stripping shell obtains foundry goods, now on the ingate of foundry goods, is formed with the annular breach one of the depression described in.
Owing to having adopted technique scheme, connecting on the ingate of gate stick and foundry goods, make the annular breach one of one depression, it is just right that the degree of depth of the annular breach one of this road depression and angle design obtain, and neither affects pour steel and feeding a casting, can make again ingate from knocking off here, specifically because in casting process, the annular breach one place heat radiation of described depression is slow, can not cause ingate premature solidification, so very little on feeding a casting impact; And the stress at annular breach one place of depression is concentrated, ingate is easy to from disconnecting here.
The key of easily broken this new technology of ingate, will make at the ingate place of wax-pattern the annular breach two of depression while being to manufacture wax-pattern, and the degree of depth and the angle of the annular breach two of depression play a decisive role to the effect of easily broken cast gate.If the degree of depth and angle are improper, not to affect feeding a casting, be exactly cast gate is difficult for knocking off.It is as follows that we sum up empirical equation through repetition test:
1. sectional area * 40% of the sectional area=ingate at ingate pressed on ring v notch v one place; Or diameter=ingate diameter at ingate annular breach one place 60%～70%;
2. the angle of annular breach one is 60～90 °.
Adopt the beneficial effect of technique scheme:
1, easily broken ingate has produced significant economic benefit: use after easily broken ingate, foundry goods far-end hits with a hammer, because annular breach one place's generation stress of easily broken ingate is concentrated, foundry goods is easy at annular breach one place disconnect, foundry goods need not cut, prune job easily completes, and foundry goods, no longer with after acetylene and oxygen cutting, has been saved 1200 yuan of foundry goods saving cutting expenses per ton; , use after easily broken ingate, the clearance time of foundry goods per ton reduces to 1 working day from 4 working days meanwhile, and expense reduces 60 yuan; The timeliness of polishing cast gate reduces to 2 working days from 5 working days, expense reduces 75 yuan.Three totals, foundry goods per ton is saved 1335 yuan altogether.The annual 100 tons of left and right of this type of precision castings that produce, the annual economic benefit producing is more than 130,000 yuan;
2, foundry goods directly strikes, and without Yang Que Yan cutting, has improved operating environment;
3, the stubble of easily broken ingate after knocking off is very low, fine polishing, and operating efficiency significantly improves.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is further described, its structure and advantage will be clearer.
Fig. 1 is a kind of structural representation that is easy to the easily broken ingate of precision castings cleaning of the utility model.
The specific embodiment
Embodiment 1, and referring to Fig. 1, a kind of easily broken ingate that is easy to precision castings cleaning, comprises that diameter is designed to the cylindrical ingate 4 of φ 25mm, and one end of described cylindrical ingate 4 connects gate stick 2, and the other end connects foundry goods 3; Wherein, on described cylindrical ingate 4, be disposed radially the annular breach 1 of a depression, the longitudinal section of described annular breach 1 is V-shaped, described annular breach 1 coaxially arranges with cylindrical ingate 4, the cross-sectional area that is positioned at described annular breach one 1 bottom positions on described cylindrical ingate 4 equals 40% of described cylindrical ingate 4 cross-sectional areas, and the numerical value after concrete calculating is: 490.625mm
2* 40%=196.25 mm
2, the formed angle α of described annular breach 1 is 60～90 °, preferably 75 °.
Embodiment 2, and referring to Fig. 1, a kind of easily broken ingate that is easy to precision castings cleaning, comprises that diameter is designed to the cylindrical ingate 4 of φ 25mm, and one end of described cylindrical ingate 4 connects gate stick 2, and the other end connects foundry goods 3; Wherein, on described cylindrical ingate 4, be disposed radially the annular breach 1 of a depression, the longitudinal section of described annular breach 1 is V-shaped, described annular breach 1 coaxially arranges with cylindrical ingate 4, the diameter that is positioned at described annular breach one 1 bottom positions on described cylindrical ingate 4 equals 60%～70% of described cylindrical ingate 4 diameters, be specially afterwards as calculated: 15～17.5mm, the formed angle α of described annular breach 1 is 60～90 °.
Embodiment 3, and referring to Fig. 1, the method for the easily broken ingate that is easy to precision castings cleaning described in a kind of embodiment of manufacture 1, is characterized in that comprising the following steps:
1. manufacture wax-pattern, when manufacturing wax-pattern, at diameter, be on the cylindrical ingate of wax-pattern of φ 25mm, to be disposed radially the annular breach two of a depression, the longitudinal section of described annular breach two is V-shaped, described annular breach two coaxially arranges with the cylindrical ingate of wax-pattern, the cross-sectional area that is positioned at described annular breach two bottom positions on the cylindrical ingate of described wax-pattern equal described wax-pattern cylindrical ingate cross-sectional area 40%, the numerical value after concrete calculating is: 490.625mm
2* 40%=196.25 mm
2, the formed angle of described annular breach two is 60～90 °, preferably 75 °, wax-pattern manufacture completes;
2. prepare shell, 1. on the wax-pattern of making in step, apply some layers of fireproof coating, through super-dry and sclerosis, form after a whole shell, with steam or hot water, from shell, melt wax-pattern again, obtain shell, now in the housing of the ingate part of shell, be formed with the corresponding annular annular protrusion of annular breach two with described depression;
3. cast casting, the shell that step is made in is 2. connected on sprue, and the metal liquid of pouring into after dissolving is cast, after metal liquid solidifies, stripping shell obtains foundry goods, now on the ingate of foundry goods, is formed with the annular breach 1 of a described depression.
Embodiment 4,
A method of manufacturing the easily broken ingate that is easy to precision castings cleaning described in embodiment 2, is characterized in that comprising the following steps:
1. manufacture wax-pattern, when manufacturing wax-pattern, at diameter, be on the cylindrical ingate of wax-pattern of φ 25mm, to be disposed radially the annular breach two of a depression, the longitudinal section of described annular breach two is V-shaped, described annular breach two coaxially arranges with the cylindrical ingate of wax-pattern, the diameter that is positioned at described annular breach two bottom positions on described cylindrical ingate equals 60%～70% of described cylindrical ingate diameter, be specially afterwards as calculated: 15～17.5mm, the formed angle of described annular breach two is 60～90 °, preferably 75 °, wax-pattern manufacture completes;
2. prepare shell, 1. on the wax-pattern of making in step, apply some layers of fireproof coating, through super-dry and sclerosis, form after a whole shell, with steam or hot water, from shell, melt wax-pattern again, obtain shell, now in the housing of the ingate part of shell, be formed with the corresponding annular annular protrusion of annular breach two with described depression;
3. cast casting, the shell that step is made in is 2. connected on sprue, and the metal liquid of pouring into after dissolving is cast, after metal liquid solidifies, stripping shell obtains foundry goods, now on the ingate of foundry goods, is formed with the annular breach 1 of a described depression.
Claims (2)
1. an easily broken ingate that is easy to precision castings cleaning, comprises cylindrical ingate, and one end of described cylindrical ingate connects gate stick, and the other end connects foundry goods; It is characterized in that: the annular breach one that is disposed radially a depression on described cylindrical ingate, the longitudinal section of described annular breach one is V-shaped, described annular breach one coaxially arranges with cylindrical ingate, the cross-sectional area that is positioned at described annular breach one bottom position on described cylindrical ingate equals 40% of described cylindrical ingate cross-sectional area, and the formed angle of described annular breach one is 60～90 °.
2. an easily broken ingate that is easy to precision castings cleaning, comprises cylindrical ingate, and one end of described cylindrical ingate connects gate stick, and the other end connects foundry goods; It is characterized in that: the annular breach one that is disposed radially a depression on described cylindrical ingate, the longitudinal section of described annular breach one is V-shaped, described annular breach one coaxially arranges with cylindrical ingate, the diameter that is positioned at described annular breach one bottom position on described cylindrical ingate equals 60%～70% of described cylindrical ingate diameter, and the formed angle of described annular breach one is 60～90 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420165068.0U CN203887158U (en) | 2014-04-08 | 2014-04-08 | Easily-fractured flow gate for cleaning precision castings easily |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420165068.0U CN203887158U (en) | 2014-04-08 | 2014-04-08 | Easily-fractured flow gate for cleaning precision castings easily |
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| Publication Number | Publication Date |
|---|---|
| CN203887158U true CN203887158U (en) | 2014-10-22 |
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| CN201420165068.0U Expired - Fee Related CN203887158U (en) | 2014-04-08 | 2014-04-08 | Easily-fractured flow gate for cleaning precision castings easily |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105798234A (en) * | 2016-04-12 | 2016-07-27 | 长兴睿鸿耐火材料有限公司 | Sprue ceramic tube |
| CN113664161A (en) * | 2021-08-16 | 2021-11-19 | 东风精密铸造有限公司 | Easily-dropped piece inner gate for investment casting |
-
2014
- 2014-04-08 CN CN201420165068.0U patent/CN203887158U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105798234A (en) * | 2016-04-12 | 2016-07-27 | 长兴睿鸿耐火材料有限公司 | Sprue ceramic tube |
| CN113664161A (en) * | 2021-08-16 | 2021-11-19 | 东风精密铸造有限公司 | Easily-dropped piece inner gate for investment casting |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141022 |