CN102672108A - Molten metal filtering and staticizing device and application method thereof - Google Patents
Molten metal filtering and staticizing device and application method thereof Download PDFInfo
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- CN102672108A CN102672108A CN2012101807057A CN201210180705A CN102672108A CN 102672108 A CN102672108 A CN 102672108A CN 2012101807057 A CN2012101807057 A CN 2012101807057A CN 201210180705 A CN201210180705 A CN 201210180705A CN 102672108 A CN102672108 A CN 102672108A
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Abstract
A molten metal filtration and staticizing device comprises a mesh static back frame on the upper portion of a lower mould of a metal mould, and a filtration and purification net is arranged in the mesh static back frame; and a mesh dynamic press frame is arranged on the upper portion of an upper mould of the metal mould, and the mesh dynamic press frame can be inserted into the outer side position of the filtration and purification net in the mesh static back frame. The application method includes that the filtration and staticizing device is arranged at the front middle portion of an inner sprue of the lower mould of the metal mould, and the mesh static back frame and the mesh dynamic press frame are assembled to form an integrity at the ingate of the upper mould and the lower mould of the metal mould; the molten metal passes between the mesh static back frame and the mesh dynamic press frame at the ingate of the mould, is filtered respectively through filtration and purification net pressed by closed moulds, and then enters stationary staticizing areas, enters respective parts of casting mould cavities stably and fills the mould cavities; and when the molten metal passes through tiny net holes of the filtration and purification net, the molten metal becomes clean immediately, and the mould is filled stably in a no-impact and overflow static type mode. According to the molten metal filtration and staticizing device and the application method thereof, breakthroughs of oxidizing slag holes and pin holes in casting technique are prevented.
Description
Technical field
The present invention relates to a kind of molten metal filter and method for using thereof, particularly in aluminium alloy upset casting, gravity foundry technology technology, relate to a kind of molten metal filter and method for using thereof that is applied to the metal pattern running gate system.
Background technology
At present; In aluminium alloy upset casting, gravity foundry technology; Be arranged on the down gate of metal pattern running gate system and the molten metal filter between the cross gate; Its structure and method for using are: comprise between the faying face between metal pattern sprue die joint or the metal pattern sprue die joint; In sprue die joint, lay metal mesh shaped filter or floamed ceramics filtrating piece, will be suspended in the molten metal filtration, purification function of oxidizing slag gas retaining in sprue in the molten metal before at the runner gate that gets into metal pattern to realize molten metal through molten metal.But generally after a sprue of metal pattern is introduced the cross gate of bottom; Must get into the rising head more than two or two; Get into the foundry goods die cavity from rising head through ingate again; Get in the cross gate of different length and drop, the rising head flow process more than two or two at molten metal and to exist secondary oxidation slag making problem, make too high, the larger-size sealing plane anchor ring of specification requirement be difficult to accomplish not have the premium casting of visible gas hole defect.In addition, also blocked filter mesh sometimes, cause foundry goods to owe casting and scrap, thereby become the bottleneck that the puzzlement casting industry is produced premium casting for a long time by oxidizing slag more in the molten metal.
Summary of the invention
The objective of the invention is to overcome the deficiency of above-mentioned technology, and provide a kind of oxidizing slag gas that can effectively prevent to be suspended in the molten metal to get into the foundry goods die cavity, have the filtration, purification effect, molten metal easy to use filters and staticizes device and method for using thereof.
The object of the invention is realized by following technical scheme: a kind of molten metal filters and staticizes device, comprises the quiet frame that leans on of the net sheet that is contained in metal pattern counterdie top, quiet the leaning in the frame of this net sheet the filtration, purification net is housed; Net sheet dynamic pressure frame is housed on the bottom of said metal pattern patrix, and this net sheet dynamic pressure frame can be inserted into the quiet outer fix of leaning on the filtration, purification net in the frame of said net sheet.
Filtering the method for using of staticizing device based on described molten metal is: at first described molten metal is filtered and staticize the front middle part place that device is arranged on the counterdie ingate of the metal die in the metal pattern casting technique; And the oral area that its net sheet is quiet to lean on frame up, and this net sheet is quiet to lean on the frame net sheet dynamic pressure frame matched moulds corresponding with the patrix ingate down of metal die to assemble and in integral body of the upper and lower mould ingate place of metal die formation; Filtration in this casting staticizes in the technology; Molten metal is quiet through the net sheet earlier at the ingate place of mould to be leaned between frame and the net sheet dynamic pressure frame, again after the filtration respectively of the filtration, purification net that matched moulds compresses, entering steadily staticizes the district and then steadily gets into the position separately of foundry goods die cavity and be full of die cavity; Because filtering, this molten metal staticizes the ingate place that device is arranged on entering foundry goods die cavity; Behind the mesh of molten metal through tiny filtration, purification net; It is clean that molten metal becomes immediately; And with do not have to impact, the quiet formula of overflowing steadily fills type, thereby makes the metal liquid filtration, purification of metal pattern casting obtain substantial lifting.
After adopting the present invention; Because filtering, this molten metal staticizes the front middle part that device is arranged on the counterdie ingate of metal pattern; Form as a whole with the upper and lower mould of metal pattern; Can not only shorten the uneven current stabilization of molten metal after filter the sprue bottom and drop down distance; The more important thing is and effectively prevented that the uneven current stabilization of virgin metal liquid after filter the sprue bottom drops down the secondary slag making, impact type is filled type, can not produce the misrun casting of low-grade hole, and can reach the quality upgrading effect that existing existing foundry goods pin hole, pore technical standard improve secondary.Thereby realized preventing the breakthrough on casting technique of oxidizing slag pore, pin hole with the physical property hardware mode; And guarantee that technology is easy to use; Reduced because the waste of the price reduction of scrapping, demote of oxidizing slag pore, pin hole product; Effectively practiced thrift resource, improved economic benefit and production efficiency, for the upgrading of the casting quality of casting industry fall cost provide one more the practical and effective molten metal filter and staticize process technology scheme.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.
Fig. 1 is the exemplary construction sketch map of known molten metal filter.
Fig. 2 is the a-a cutaway view of Fig. 1.
Fig. 3 staticizes the sketch map that device is installed in the ingate place of foundry goods die cavity for molten metal of the present invention filters.
Fig. 4 filters the E-E cutaway view that staticizes device for molten metal among Fig. 3.
Fig. 5 filters the D-D cutaway view that staticizes device for molten metal among Fig. 3.
Fig. 6 is the S-S cutaway view of Fig. 5.
The specific embodiment
Like Fig. 1, shown in Figure 2, known molten metal filter is the pocket formula of the hanging metal filter screen 5 in the water conservancy diversion cup 4 that is contained in metal pattern 1 (being made up of patrix 11 and counterdie 21) top.The cup 6 that prestores also is equipped with on top at metal pattern 1, and molten metal is flowed through from the cup 6 that prestores and hung pocket formula metal filter screen 5, gets into sprue 9 through water conservancy diversion cup 4.Under the effect of fluid gravity drop, molten metal has certain impact power and passes through a plurality of ingates 2 fast, and faces core 3 and fill type with impact conditions., impact conditions not steady at this filled in the type and can be produced secondary slag making and oxidized blowhole; And can be detained with the liquid level rising and to be suspended in the molten metal natural casting mold up; Locate below in the die cavity of the patrix 11 of metal pattern to form a plurality of subscale slag pores 8, after being full of die cavity foundry goods 7, a plurality of subscale slag pores 8 are just stayed the foundry goods adjacent regions admittedly; Just cause the casting flaw of subscale slag pore after this foundry goods processing; Cause the consequence that product the lighter repair welding is anti-revisionist, weight person scraps, this type of defective is prevalent in the metal pattern casting industry, belongs to a historic puzzled casting flaw difficult problem.
Extremely shown in Figure 6 like Fig. 3; Molten metal of the present invention filters and staticizes device; Comprise the quiet frame 14 (be trapezoidal pit inclined plane shape, it has the running channel of several osculums and big mouth) that leans on of the net sheet that is contained in metal pattern counterdie 21 tops, filtration, purification net 16 is housed quiet the leaning in the frame 14 of this net sheet; Net sheet dynamic pressure frame 15 is housed on the bottom of said metal pattern patrix 11; This net sheet dynamic pressure frame 15 can be inserted into the quiet outer fix of leaning on the filtration, purification net 16 in the frame of said net sheet and (promptly filter when staticizing duty at the patrix 11 of metal pattern and counterdie 21 matched moulds, molten metal; The net sheet is quiet to be leaned on frame and nets also corresponding the plugging together of sheet dynamic pressure frame; Make and net the outside that sheet dynamic pressure frame is pressed on filtration, purification net sheet, as shown in Figure 6).
As shown in Figure 6; The quiet frame 14 that leans on of said net sheet is the quiet frame 17 that leans on of bilateral formula net sheet; Said net sheet dynamic pressure frame 15 also is corresponding bilateral formula net sheet dynamic pressure frame 18; Behind the patrix of metal pattern and the counterdie matched moulds, bilateral net sheet dynamic pressure frame 18 can be pushed down lean against the quiet filtration, purification net 16 that leans in the frame 17 of bilateral net sheet.In the time of in working order; The counterdie lower concave bottom that this molten metal filtration that is contained in ingate staticizes device is less than its upper port; The lower port of the bilateral formula net sheet dynamic pressure frame 18 of patrix is greater than its upper bottom (helping the matched moulds and the demoulding of patrix and counterdie), and molten metal filters quantity, the shape of staticizing device and then confirms according to concrete casting process needs.
Filtering the method for using of staticizing device based on described molten metal is: at first described molten metal is filtered and staticize the front middle part place that device is arranged on the counterdie ingate of the metal die in the metal pattern casting technique and (promptly be located between foundry goods the die cavity outside ingate and foundry goods die cavity; As shown in Figure 3); And the oral area that its net sheet is quiet to lean on frame up, and this net sheet is quiet to lean on the frame net sheet dynamic pressure frame matched moulds corresponding with the patrix ingate down of metal die to assemble and in integral body of the upper and lower mould ingate place of metal die formation; Filtration in this casting staticizes in the technology; Molten metal (getting into from sprue 9) is quiet through the net sheets earlier at the ingate 13 of mould to be leaned between frame and the net sheet dynamic pressure frame, again after (100%) of the filtration, purification net that matched moulds compresses filters respectively, get into the position separately of steadily staticizing the 19 steady entering foundry goods die cavities in district and be full of die cavity; Because filtering, this molten metal staticizes the ingate place that device is arranged on entering foundry goods die cavity; Behind the mesh of molten metal through tiny filtration, purification net, the molten metal flow is owing to the decomposition of silk screen porous diminishes, flow velocity is slack-off owing to stop in its pressure effect, and it is clean that molten metal becomes immediately; And with do not have to impact, the quiet formula of overflowing is steadily filled type (almost is that zero distance gets into the metal die die cavity; Impulsive force is decomposed disappearance fast under the effect of drop, faces the impact conditions of core 3, behind filtration, purification steadily, do not have and impact, overflow and drop down formula and fill type; Secondary slag making key element is removed; The oxidizing slag pore disappears, and a plurality of subscale slag pores 8 that form below originally in the die cavity of metal pattern are able to disappear), thus the metal liquid filtration, purification that metal pattern is cast has obtained substantial lifting.
The present invention is compared with prior art: the one, and structurally increase and molten metal is set filters and staticize device at former ingate place; Behind the filter mesh of molten metal through the filtration, purification net; Its flow is owing to the decomposition of silk screen porous diminishes, flow velocity is slack-off; Steadily rising liquid fills type in the die cavity of foundry goods to demonstrate convex liquid level after staticizing, and the subscale slag pore of foundry goods can be eliminated fully.The 2nd, it is 70% that the foundry goods subscale slag pore that prior art exists causes the product rejection ratio; The invention solves ubiquitous secondary oxidation slag making problem in the prior art; And too high, the larger-size sealing plane anchor ring of specification requirement is difficult to accomplish not have the premium casting of visible gas hole defect; Sometimes blocked filter mesh by oxidizing slag more in the molten metal, cause foundry goods to owe casting and scrap, become the bottleneck that the puzzlement casting industry is produced premium casting.The 3rd, this filtration staticizes quantity, shape, the distribution of device according to ingate on function; And the needs of casting process and be provided with definitely arbitrarily, solved extremely restricted state of the art of former technology cup, sprue, cross gate, ingate quantity, shape, distribution.
Claims (3)
1. a molten metal filters and staticizes device, it is characterized in that: comprise the quiet frame (14) that leans on of the net sheet that is contained in metal pattern counterdie (21) top, quiet the leaning in the frame (14) of this net sheet filtration, purification net (16) is housed; Net sheet dynamic pressure frame (15) is housed on the bottom of said metal pattern patrix (11), and this net sheet dynamic pressure frame (15) can be inserted into the quiet outer fix of leaning on the filtration, purification net (16) in the frame of said net sheet.
2. molten metal according to claim 1 filters and staticizes device; It is characterized in that: the quiet frame (14) that leans on of said net sheet leans on frame (17) for bilateral formula net sheet is quiet; Said net sheet dynamic pressure frame (15) also is corresponding bilateral formula net sheet dynamic pressure frame (18); Behind the patrix of metal pattern and the counterdie matched moulds, bilateral net sheet dynamic pressure frame (18) can be pushed down lean against the quiet filtration, purification net (16) that leans in the frame (17) of bilateral net sheet.
3. filter the method for using of staticizing device based on the described molten metal of claim 1; It is characterized in that: at first described molten metal is filtered and staticize the front middle part place that device is arranged on the counterdie ingate of the metal die in the metal pattern casting technique; And the oral area that its net sheet is quiet to lean on frame up, and this net sheet is quiet to lean on the frame net sheet dynamic pressure frame matched moulds corresponding with the patrix ingate down of metal die to assemble and in integral body of the upper and lower mould ingate place of metal die formation; Filtration in this casting staticizes in the technology; Molten metal is quiet through the net sheet earlier at the ingate place of mould to be leaned between frame and the net sheet dynamic pressure frame, again after the filtration respectively of the filtration, purification net that matched moulds compresses, entering steadily staticizes the district and then steadily gets into the position separately of foundry goods die cavity and be full of die cavity; Because filtering, this molten metal staticizes the ingate place that device is arranged on entering foundry goods die cavity; Behind the mesh of molten metal through tiny filtration, purification net; It is clean that molten metal becomes immediately; And with do not have to impact, the quiet formula of overflowing steadily fills type, obtained substantial lifting thereby make the metal liquid of metal pattern casting filter to staticize.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101807057A CN102672108A (en) | 2012-05-21 | 2012-05-21 | Molten metal filtering and staticizing device and application method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101807057A CN102672108A (en) | 2012-05-21 | 2012-05-21 | Molten metal filtering and staticizing device and application method thereof |
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| CN102672108A true CN102672108A (en) | 2012-09-19 |
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| CN2012101807057A Pending CN102672108A (en) | 2012-05-21 | 2012-05-21 | Molten metal filtering and staticizing device and application method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106583663A (en) * | 2016-12-22 | 2017-04-26 | 常州中车汽车零部件有限公司 | Casting method for turbine shell |
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| JP3962450B2 (en) * | 1997-07-03 | 2007-08-22 | アイシン高丘株式会社 | Inoculation filter and cast iron inoculation method |
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| DE102008063906A1 (en) * | 2008-12-19 | 2010-07-01 | Edelstahlwerke Schmees Gmbh | Distribution device for casting of metal, e.g. stainless steel, has lower and upper parts together forming casting path containing integrated casting filter |
| CN102089094A (en) * | 2009-04-01 | 2011-06-08 | 福塞科国际有限公司 | Mould for metal casting and method using same |
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- 2012-05-21 CN CN2012101807057A patent/CN102672108A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4395333A (en) * | 1982-04-14 | 1983-07-26 | Groteke Daniel E | Pre-wet and reinforced molten metal filter |
| US4721567A (en) * | 1984-06-06 | 1988-01-26 | Certech Inc. | Ceramic pouring filter with tortuous flow paths |
| CN85200675U (en) * | 1985-04-01 | 1986-01-08 | 段辉武 | Hyperboloids strainer filter |
| JPS63224837A (en) * | 1987-03-12 | 1988-09-19 | Kubota Ltd | Net-like filter structural body |
| JP3962450B2 (en) * | 1997-07-03 | 2007-08-22 | アイシン高丘株式会社 | Inoculation filter and cast iron inoculation method |
| CN1262155A (en) * | 1999-01-28 | 2000-08-09 | 北京科技大学 | Method for installing fibrous filter net in casting with vertically parted metal mould |
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| DE102008063906A1 (en) * | 2008-12-19 | 2010-07-01 | Edelstahlwerke Schmees Gmbh | Distribution device for casting of metal, e.g. stainless steel, has lower and upper parts together forming casting path containing integrated casting filter |
| CN102089094A (en) * | 2009-04-01 | 2011-06-08 | 福塞科国际有限公司 | Mould for metal casting and method using same |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106583663A (en) * | 2016-12-22 | 2017-04-26 | 常州中车汽车零部件有限公司 | Casting method for turbine shell |
| CN106583663B (en) * | 2016-12-22 | 2018-12-07 | 常州中车汽车零部件有限公司 | A kind of turbine case casting method |
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Application publication date: 20120919 |