CN107321920A - A kind of pouring procedure cast for precision castings - Google Patents
A kind of pouring procedure cast for precision castings Download PDFInfo
- Publication number
- CN107321920A CN107321920A CN201710543647.2A CN201710543647A CN107321920A CN 107321920 A CN107321920 A CN 107321920A CN 201710543647 A CN201710543647 A CN 201710543647A CN 107321920 A CN107321920 A CN 107321920A
- Authority
- CN
- China
- Prior art keywords
- formwork
- cast
- casting ladle
- slag
- asbestos
- 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
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
- B22C9/04—Use of lost patterns
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D37/00—Controlling or regulating the pouring of molten metal from a casting melt-holding vessel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D43/00—Mechanical cleaning, e.g. skimming of molten metals
- B22D43/001—Retaining slag during pouring molten metal
- B22D43/004—Retaining slag during pouring molten metal by using filtering means
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Abstract
A kind of pouring procedure cast for precision castings, is related to precision casting technology field, by ajusting formwork, controls temperature, shelves slag, moulding by casting are formed.Beneficial effects of the present invention are：Of the invention novel in design, preparation technology is scientific and normal, and method is reasonable during cast, it is ensured that outside the one-shot forming performance after cast, shaping speed block, also ensures the high performance of the cast member quality after cast aftershaping.
Description
Technical field
The present invention relates to precision casting technology field, and in particular to a kind of pouring procedure cast for precision castings.
Background technology
Casting is a kind of history of mankind's grasp than metal heat processing technique, about 6000 earlier.China about exists
B.C. 1700~it is first 1000 between have been enter into heyday of bronze casting, technique and reached at a relatively high level.Casting
It is that liquid metals is cast in the casting cavity being adapted with part shape, after after its cooled and solidified, to obtain part or hair
The method of base.
When being cast in progress, processed by wax-pattern processed, wax pattern welding, dewaxing, roasting, melting, cast, cleaning and post processing
Complete, in casting, wherein the standard operation of any one link, be prepares follow-up high-quality precision castings basic, casting
In flow, wherein pouring section, in its actual operation at this stage and lack of standardization, generally when being poured into a mould, is controlled and not conformed to
Reason, while being poured into a mould, poring rate, the method for cast is lack of standardization, therefore follow-up actual cast member can also be present
Very big defect, influence actual use.
The content of the invention：
The technical problems to be solved by the invention are to provide a kind of technical specification, and pouring procedure is scientific and reasonable, and operation is just
Prompt is used for the pouring procedure that precision castings are cast.
The technical problems to be solved by the invention are realized using following technical scheme：
A kind of pouring procedure cast for precision castings, it is characterised in that including following technical step：
1) formwork release in-line is well placed, then by formwork sprue cup down, topples over the Relict Sand in formwork die cavity
Grain and dust, then fix formwork level, it is ensured that formwork is not tilted；
2) before being poured into a mould formwork spring temperature control 450-500 DEG C, formwork summer temp control 350-400 DEG C,
Formwork fall temperature controls 400-450 DEG C, 500-550 DEG C of formwork winter temperature control；
3) casting ladle is taken, and carbon and silicon inoculant is smeared in casting ladle bottom, it is 300-400 DEG C to control casting ladle temperature, and casting ladle
It must dry, then be poured into a mould into formwork, formwork sprue cup center is directed at during cast and is poured into a mould, until molten steel is fully filled and poured
Cup, and ensure the height of hydrostatic head, covering and heat insulating agent；
Described carbon and silicon inoculant is using graphite particle 15-30%, ferrosilicon particle 60-70%, rare earth 5-10% preparation
Into；
Described heat preserving agent uses 10-20 parts of high-carbon fly ash, 5-7 parts of Fluorspar Powder, 2-4 parts of refractory fibre and glass fibre
8-10 parts are prepared from；
4) asbestos pushing off the slag is used, the slag at casting ladle mouthful first be press against into asbestos cleaning using pressure bar during pushing off the slag, stone is then promoted
Cotton, is inwardly pushed away by casting ladle mouthful, and when promoting, pressure bar presses, and asbestos are dragged at casting ladle mouthful again during cast, prevent slag from entering mould
In shell；
5) in cast, speed is first quick and back slow, it is ensured that quickly fill type, and speed slows down when type is filled to formwork half, pours full
After receive molten steel, wait after molten steel flows out completely not out of casting ladle.
The mode of horizontal stent shell is that directly formwork is placed on sand drift in described step 1.
Beneficial effects of the present invention are：Of the invention novel in design, preparation technology is scientific and normal, and method rationally, is protected during cast
Outside one-shot forming performance after card cast, shaping speed block also ensures the high property of the cast member quality after cast aftershaping
Energy.
Embodiment
In order that the technical means, the inventive features, the objects and the advantages of the present invention are easy to understand, tie below
Specific embodiment is closed, the present invention is expanded on further.
Embodiment 1
A kind of pouring procedure cast for precision castings, including following technical step：
1) formwork release in-line is well placed, then by formwork sprue cup down, topples over the Relict Sand in formwork die cavity
Grain and dust, then fix formwork level, it is ensured that formwork is not tilted；
2) formwork spring temperature control controls 350 DEG C, formwork autumn in 450 DEG C, formwork summer temp before being poured into a mould
400 DEG C of temperature control, formwork winter temperature control 500 DEG C；
3) casting ladle is taken, and carbon and silicon inoculant is smeared in casting ladle bottom, it is 300 DEG C to control casting ladle temperature, and casting ladle is necessary
Dry, then poured into a mould into formwork, formwork sprue cup center is directed at during cast and is poured into a mould, until molten steel fully fills cast gate
Cup, and ensure the height of hydrostatic head, covering and heat insulating agent；
Described carbon and silicon inoculant uses graphite particle 15%, and ferrosilicon particle 60%, rare earth 5% is prepared from；
Described heat preserving agent is using 10 parts of high-carbon fly ash, 5 parts of Fluorspar Powder, the 8 parts of preparations of 2 parts of refractory fibre and glass fibre
Form；
4) asbestos pushing off the slag is used, the slag at casting ladle mouthful first be press against into asbestos cleaning using pressure bar during pushing off the slag, stone is then promoted
Cotton, is inwardly pushed away by casting ladle mouthful, and when promoting, pressure bar presses, and asbestos are dragged at casting ladle mouthful again during cast, prevent slag from entering mould
In shell；
5) in cast, speed is first quick and back slow, it is ensured that quickly fill type, and speed slows down when type is filled to formwork half, pours full
After receive molten steel, wait after molten steel flows out completely not out of casting ladle.
The mode of horizontal stent shell is that directly formwork is placed on sand drift in described step 1.
Embodiment 2
A kind of pouring procedure cast for precision castings, including following technical step：
1) formwork release in-line is well placed, then by formwork sprue cup down, topples over the Relict Sand in formwork die cavity
Grain and dust, then fix formwork level, it is ensured that formwork is not tilted；
2) formwork spring temperature control controls 400 DEG C, formwork autumn in 500 DEG C, formwork summer temp before being poured into a mould
450 DEG C of temperature control, formwork winter temperature control 550 DEG C；
3) casting ladle is taken, and carbon and silicon inoculant is smeared in casting ladle bottom, it is 400 DEG C to control casting ladle temperature, and casting ladle is necessary
Dry, then poured into a mould into formwork, formwork sprue cup center is directed at during cast and is poured into a mould, until molten steel fully fills cast gate
Cup, and ensure the height of hydrostatic head, covering and heat insulating agent；
Described carbon and silicon inoculant uses graphite particle 30%, and ferrosilicon particle 70%, rare earth 10% is prepared from；
Described heat preserving agent is using 20 parts of high-carbon fly ash, 7 parts of Fluorspar Powder, 10 parts of systems of 4 parts of refractory fibre and glass fibre
It is standby to form；
4) asbestos pushing off the slag is used, the slag at casting ladle mouthful first be press against into asbestos cleaning using pressure bar during pushing off the slag, stone is then promoted
Cotton, is inwardly pushed away by casting ladle mouthful, and when promoting, pressure bar presses, and asbestos are dragged at casting ladle mouthful again during cast, prevent slag from entering mould
In shell；
5) in cast, speed is first quick and back slow, it is ensured that quickly fill type, and speed slows down when type is filled to formwork half, pours full
After receive molten steel, wait after molten steel flows out completely not out of casting ladle.
The mode of horizontal stent shell is that directly formwork is placed on sand drift in described step 1.
Embodiment 3
A kind of pouring procedure cast for precision castings, including following technical step：
1) formwork release in-line is well placed, then by formwork sprue cup down, topples over the Relict Sand in formwork die cavity
Grain and dust, then fix formwork level, it is ensured that formwork is not tilted；
2) formwork spring temperature control controls 370 DEG C, formwork autumn in 470 DEG C, formwork summer temp before being poured into a mould
420 DEG C of temperature control, formwork winter temperature control 520 DEG C；
3) casting ladle is taken, and carbon and silicon inoculant is smeared in casting ladle bottom, it is 350 DEG C to control casting ladle temperature, and casting ladle is necessary
Dry, then poured into a mould into formwork, formwork sprue cup center is directed at during cast and is poured into a mould, until molten steel fully fills cast gate
Cup, and ensure the height of hydrostatic head, covering and heat insulating agent；
Described carbon and silicon inoculant uses graphite particle 22%, and ferrosilicon particle 65%, rare earth 7% is prepared from；
Described heat preserving agent is using 15 parts of high-carbon fly ash, 6 parts of Fluorspar Powder, the 9 parts of preparations of 3 parts of refractory fibre and glass fibre
Form；
4) asbestos pushing off the slag is used, the slag at casting ladle mouthful first be press against into asbestos cleaning using pressure bar during pushing off the slag, stone is then promoted
Cotton, is inwardly pushed away by casting ladle mouthful, and when promoting, pressure bar presses, and asbestos are dragged at casting ladle mouthful again during cast, prevent slag from entering mould
In shell；
5) in cast, speed is first quick and back slow, it is ensured that quickly fill type, and speed slows down when type is filled to formwork half, pours full
After receive molten steel, wait after molten steel flows out completely not out of casting ladle.
The mode of horizontal stent shell is that directly formwork is placed on sand drift in described step 1.
Contrast test：
4 groups of relatively uniform cast member essence casting numbering traditional groups, 1 group of contrast, 2 groups of contrast, 3 groups of contrasts are carried out respectively, really
Raw material, the shape for protecting casting are unified, and processing technology is unified, and traditional group uses traditional placingJi Shu, and 1 group of contrast, contrast 2 are combined
3 groups of placingJi Shus being respectively adopted in embodiment 1, embodiment 2 and embodiment 3 are contrasted, determines and uses different placingJi Shus, respectively
Precision castings after prepared by contrast：
Shaping speed：Be divided into it is fast, very fast, slowly；
Surface defect rate：Height, it is higher, it is low；
Surface roughness efficiency：Height, it is higher, it is low；
Surface gloss：It is bright, brighter, it is dull；
Surface smoothness：It is smooth, more smooth, it is coarse.
Correction data is as follows：
As can be seen here, the casting wax of traditional group actual in use,
Shaping speed is less than 1 group of contrast, 2 groups of contrast and the shaping speed for contrasting 3 groups；
Surface defect rate is higher than 1 group of contrast, 2 groups of contrast and the shaping speed surface defect rate for contrasting 3 groups；
Surface roughness efficiency is higher than 1 group of contrast, 2 groups of contrast and the shaping speed roughness for contrasting 3 groups；
Surface gloss is less than 1 group of contrast, 2 groups of contrast and the shaping speed for contrasting 3 groups；
Surface smoothness is less than 1 group of contrast, 2 groups of contrast and the surface smoothness for contrasting 3 groups；
Therefore it can be assumed that precision castings its properties prepared by the placingJi Shu in the application are superior to traditional cast
Precision castings prepared by technology.
The general principle and principal character and advantages of the present invention of the present invention has been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the simply explanation described in above-described embodiment and specification is originally
The principle of invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (4)
1. a kind of pouring procedure cast for precision castings, it is characterised in that including following technical step：
1) formwork release in-line is well placed, then by formwork sprue cup down, topple over residual sand grains in formwork die cavity and
Dust, then fixes formwork level, it is ensured that formwork is not tilted；
2) formwork spring temperature control controls 350-400 DEG C, formwork in 450-500 DEG C, formwork summer temp before being poured into a mould
Fall temperature controls 400-450 DEG C, 500-550 DEG C of formwork winter temperature control；
3) casting ladle is taken, and carbon and silicon inoculant is smeared in casting ladle bottom, it is 300-400 DEG C to control casting ladle temperature, and casting ladle is necessary
Dry, then poured into a mould into formwork, formwork sprue cup center is directed at during cast and is poured into a mould, until molten steel fully fills cast gate
Cup, and ensure the height of hydrostatic head, covering and heat insulating agent；
4) asbestos pushing off the slag is used, the slag at casting ladle mouthful first be press against into asbestos cleaning using pressure bar during pushing off the slag, asbestos are then promoted, by
Casting ladle mouthful is inwardly pushed away, and when promoting, pressure bar presses, and asbestos are dragged at casting ladle mouthful again during cast, prevents slag from entering in formwork；
5) in cast, speed is first quick and back slow, it is ensured that quickly fill type, and speed slows down when type is filled to formwork half, is received after pouring completely
Molten steel, is waited after molten steel flows out completely not out of casting ladle.
2. a kind of pouring procedure cast for precision castings according to claim, it is characterised in that：Described step 3 carbon
Silicon inoculant uses graphite particle 15-30%, and ferrosilicon particle 60-70%, rare earth 5-10% are prepared from.
3. a kind of pouring procedure cast for precision castings according to claim, it is characterised in that：Described step 3 is protected
Warm agent is prepared from using 8-10 parts of 10-20 parts of high-carbon fly ash, 5-7 parts of Fluorspar Powder, 2-4 parts of refractory fibre and glass fibre.
4. a kind of pouring procedure cast for precision castings according to claim, it is characterised in that：In described step 1
Level fixes the mode of formwork directly formwork is placed on sand drift.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710543647.2A CN107321920A (en) | 2017-07-05 | 2017-07-05 | A kind of pouring procedure cast for precision castings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710543647.2A CN107321920A (en) | 2017-07-05 | 2017-07-05 | A kind of pouring procedure cast for precision castings |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107321920A true CN107321920A (en) | 2017-11-07 |
Family
ID=60196171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710543647.2A Pending CN107321920A (en) | 2017-07-05 | 2017-07-05 | A kind of pouring procedure cast for precision castings |
Country Status (1)
| Country | Link |
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| CN (1) | CN107321920A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112496279A (en) * | 2020-11-13 | 2021-03-16 | 攀钢集团攀枝花钢铁研究院有限公司 | Ingot feeding method |
| CN112605351A (en) * | 2020-11-13 | 2021-04-06 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for improving internal quality of cast ingot and heating and heat-insulating box |
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|---|---|---|---|---|
| GB843412A (en) * | 1957-12-16 | 1960-08-04 | Eiichiro A B E | Method of making an inlay casting mould or a precision casting mould from a wax pattern |
| CN1928141A (en) * | 2005-09-05 | 2007-03-14 | 河南科技大学 | Heat-cracking-resistant vermicular graphite cast iron braking material and vermicular graphite cast iron brake disc prepared from same |
| CN101468384A (en) * | 2007-12-25 | 2009-07-01 | 南通华东液压铸业有限公司 | Multi-layer multiplex hydraulic valve mold and casting technique thereof |
| CN101942619A (en) * | 2010-09-21 | 2011-01-12 | 常熟市建华模具有限责任公司 | Glass mould material of alloy cast iron and preparation method thereof |
| CN102747263A (en) * | 2012-04-29 | 2012-10-24 | 本钢板材股份有限公司 | Carbon-silicon incubater |
| CN103131938A (en) * | 2013-03-13 | 2013-06-05 | 苏州东海玻璃模具有限公司 | Metal type rare earth microalloyed D-type graphite cast iron glass mould and preparation method thereof |
| CN103820739A (en) * | 2014-02-28 | 2014-05-28 | 南车戚墅堰机车车辆工艺研究所有限公司 | Ferrite heat-resisting cast steel, preparation method thereof and applications thereof |
| CN106001514A (en) * | 2016-06-29 | 2016-10-12 | 宣达实业集团有限公司 | Casting process of high-silicon austenitic stainless steel casting |
-
2017
- 2017-07-05 CN CN201710543647.2A patent/CN107321920A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB843412A (en) * | 1957-12-16 | 1960-08-04 | Eiichiro A B E | Method of making an inlay casting mould or a precision casting mould from a wax pattern |
| CN1928141A (en) * | 2005-09-05 | 2007-03-14 | 河南科技大学 | Heat-cracking-resistant vermicular graphite cast iron braking material and vermicular graphite cast iron brake disc prepared from same |
| CN101468384A (en) * | 2007-12-25 | 2009-07-01 | 南通华东液压铸业有限公司 | Multi-layer multiplex hydraulic valve mold and casting technique thereof |
| CN101942619A (en) * | 2010-09-21 | 2011-01-12 | 常熟市建华模具有限责任公司 | Glass mould material of alloy cast iron and preparation method thereof |
| CN102747263A (en) * | 2012-04-29 | 2012-10-24 | 本钢板材股份有限公司 | Carbon-silicon incubater |
| CN103131938A (en) * | 2013-03-13 | 2013-06-05 | 苏州东海玻璃模具有限公司 | Metal type rare earth microalloyed D-type graphite cast iron glass mould and preparation method thereof |
| CN103820739A (en) * | 2014-02-28 | 2014-05-28 | 南车戚墅堰机车车辆工艺研究所有限公司 | Ferrite heat-resisting cast steel, preparation method thereof and applications thereof |
| CN106001514A (en) * | 2016-06-29 | 2016-10-12 | 宣达实业集团有限公司 | Casting process of high-silicon austenitic stainless steel casting |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112496279A (en) * | 2020-11-13 | 2021-03-16 | 攀钢集团攀枝花钢铁研究院有限公司 | Ingot feeding method |
| CN112605351A (en) * | 2020-11-13 | 2021-04-06 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for improving internal quality of cast ingot and heating and heat-insulating box |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171107 |
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| RJ01 | Rejection of invention patent application after publication |