CN104985117A - Method for floatingly pressing box - Google Patents
Method for floatingly pressing box Download PDFInfo
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- CN104985117A CN104985117A CN201510376262.2A CN201510376262A CN104985117A CN 104985117 A CN104985117 A CN 104985117A CN 201510376262 A CN201510376262 A CN 201510376262A CN 104985117 A CN104985117 A CN 104985117A
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Abstract
A method for floatingly pressing a box comprises the steps of producing a sand box, assembling a sand core, fixing and pressing the sand core, filling sand, fixing and pressing a casting mould, putting supporting steel plates in a supportive manner and placing weights. Before pouring, the weight of the weights acts on steel frames through the supporting steel plates in a pressing manner, and the steel frames are arranged on supporting platforms like a pit rather than being directly pressed on a sand mould, so that the problem that the weights crush the sand mould is avoided; during molten iron pouring, the sand mould is uplifted due to the buoyancy of molten iron, and at the moment, the weight of the weights acts on the core nose of the sand mould sequentially through the supporting steel plates, the steel rails above the casting mould and the steel rails above the sand mould, so that the sand mould is pressed and prevented from being uplifted; and besides, the weight of the weights finally acts on the core nose of the sand mould, not directly on the sand mould, so that the risk that the weights crush the sand mould is further avoided.
Description
Technical field
The present invention relates to the pressure box technology field in sand casting, particularly relate to a kind of pressure case method of floating.
Background technology
In casting field, during molten iron cast, the top box of sandbox will bear the huge buoyancy of high temperature liquid iron, and in order to ensure that sandbox top box is not lifted by buoyancy, people usually adopt and place pressure case iron on top box case lid, be not lifted in order to push down top box, when foundry goods is larger time, the weight of pressure case iron reaches 3 ~ 5 times of casting weight, and so large weight is directly placed on above sandbox, although can push down the buoyancy that sandbox receives, the weight that also there is foundary weight damages the risk of sand mold by pressure.
Summary of the invention
Be necessary to propose a kind ofly can to push down sandbox, avoid molten iron buoyancy to be lifted and be unlikely to damage by pressure the floating pressure case method of sand mold.
A kind of pressure case method of floating, comprises the steps:
(1) sandbox is made: use bolt to connect under casing, raising middle flask, the top box of sandbox side plate composition sandbox, described under casing, raising middle flask, top box are aligned up and down successively and assembly sandbox;
(2) core assembly;
(3) solid pressure core: the outside described raising middle flask being enclosed within core after core assembly, and raising middle flask and under casing align and are assembled together, then above the core nose multiple steel plate being placed on respectively core, again at least three one steel rails are pressed on the steel plate above core along the direction of core length, rail and the case band of top box are intersected in netted, thus by steel plate, whole core is pushed down; Then top box is aligned raising middle flask to be assembled together;
(4) quicksand: tamped by molding sand between core and sandbox, forms casting mold;
(5) solid pressure casting mold: place steel plate above casting mold, described steel plate is placed on the steel tank band of casting mold top box, is pressed in above steel plate by least seven one steel rails along the direction of casting mold length;
(6) frame puts supporting steel plate: outside casting mold, put the steelframe for supporting steel plate along casting mold length direction frame, and supporting steel plate strides across to be placed on steelframe above casting mold and forms horizontal support surface; Then outside casting mold, steelframe is put along casting mold width frame, supporting steel plate strides across to be placed on steelframe above horizontal support surface and casting mold and forms longitudinal bracing face, described horizontal support surface contacts with longitudinal bracing face and forms trapezium structure, headspace between the rail placed above described horizontal support surface and casting mold;
(7) foundary weight is placed: be first placed on supporting steel plate by the foundary weight of 85% ~ 95% of foundary weight gross weight, then highly suitable parallels is placed in the headspace between the rail above horizontal support surface and casting mold, again the foundary weight of 15% ~ 5% of remaining foundary weight gross weight is placed on above supporting steel plate, thus the total weight of foundary weight is pressed on supporting steel plate.
Floating pressure case method of the present invention, when not pouring into a mould, the weight of foundary weight is pressed on steelframe by supporting steel plate, steelframe is arranged in the support platforms such as melt pit, instead of be directly pressed on sand mold, avoid the problem that foundary weight damages sand mold by pressure, when molten iron is poured into a mould, sand mold is lifted because being subject to iron buoyancy of water, now, the weight of foundary weight passes through supporting steel plate successively, rail above casting mold, rail above sand mold acts on the core nose of sand mold, thus push down sand mold, be not lifted, and the weight of foundary weight finally acts on the core nose of sand mold, do not act directly on sand mold, so further avoid the risk that foundary weight damages sand mold by pressure.
Accompanying drawing explanation
Fig. 1 is the structural representation of example product of the present invention.
Fig. 2 is the schematic diagram of core assembly step in sandbox of the present invention.
Fig. 3 is the schematic diagram of solid pressure sand mold step of the present invention.
Fig. 4 is the schematic diagram of solid pressure casting mold step of the present invention.
Fig. 5 is the schematic diagram that frame of the present invention puts supporting steel plate step.
Fig. 6 is method flow diagram of the present invention.
In figure: the process step S801 ~ S807 of sandbox 10, under casing 101, raising middle flask 102, top box 103, core 20, steel plate 30, rail 40, steelframe 50, supporting steel plate 60, foundary weight 70, pressure of floating case method.
Detailed description of the invention
See Fig. 1 ~ Fig. 6, use pressure case method of floating to produce a kind of large-scale crankcase foundry goods, comprise the steps:
S801 makes sandbox: use bolt to connect under casing 101, raising middle flask 102, the top box 103 of sandbox side plate composition sandbox 10, under casing 101, raising middle flask 102, top box 103 are aligned up and down successively and assembly sandbox 10.Wherein, " C " type clamp clamping is used between the under casing 101 of sandbox 10, raising middle flask 102.
S802 core assembly: first put under casing 101, then quicksand makes lower mold, plays type swabbing, completes lower mold by lower mold, afterwards by core under multiple core block-by-block, complete core assembly, obtain the core 20 combined.
S803 solid pressure core: outside raising middle flask 102 being enclosed within core 20, and raising middle flask 102 and under casing 101 align and are assembled together, then above the core nose multiple steel plate 30 being placed on respectively core 20, again at least three one steel rails 40 are pressed in along the direction of core 20 length on the steel plate 30 be positioned at above core 20, wherein, two terminations of rail 40 snap into termination, the front and back core of inner chamber core, rail 40 and the case band of core 20 is made to intersect in netted, thus by steel plate 30, whole core 20 is pushed down, then top box 101 is aligned raising middle flask 102 and be assembled together.
S804 quicksand: tamped by molding sand between described core 20 and sandbox 10, forms casting mold.Wherein, " C " type clamp is used to clamp between the raising middle flask 102 of sandbox 10 and top box 103.
S805 solid pressure casting mold: place steel plate 30 above casting mold, steel plate 30 is placed on the steel tank band of the top box 101 of sandbox 10 or casting mold, is pressed in above steel plate 30 in the direction of at least seven one steel rails 40 along casting mold length.
S806 frame puts supporting steel plate: outside casting mold, put the steelframe 50 for supported steel plate 60 along casting mold length direction frame, and supporting steel plate 60 strides across to be placed on steelframe 50 above casting mold and forms horizontal support surface; Then outside casting mold, steelframe 50 is put along casting mold width frame, supporting steel plate 60 strides across to be placed on steelframe 50 above horizontal support surface and casting mold and forms longitudinal bracing face, horizontal support surface contacts with longitudinal bracing face and forms trapezium structure, headspace between the rail 40 placed above horizontal support surface and casting mold.In the present embodiment, headspace between the rail 40 placed above horizontal support surface and casting mold in advance, when being to place foundary weight 70, the most weight of foundary weight 70 is pressed on steelframe 50, instead of be directly pressed on casting mold, in the present embodiment, the supporting steel plate 60 put along casting mold length direction frame is two, and the supporting steel plate 60 put along casting mold width frame is three.Steelframe 50 in this step is played a supporting role, and also can utilize other supporter to substitute.
S807 places foundary weight: be first placed on supporting steel plate 60 by the foundary weight 70 of 85% ~ 95% of foundary weight gross weight, then highly suitable parallels is placed in the headspace between the rail 40 above horizontal support surface and casting mold, again the foundary weight 70 of 15% ~ 5% of remaining foundary weight gross weight is placed on above supporting steel plate 60, thus the total weight of foundary weight 70 is pressed on steelframe 50 by supporting steel plate 60.So substep is adopted to place foundary weight, can avoid disposable foundary weight 70 being placed on supporting steel plate 60, supporting steel plate 60 is depressed into distortion, with parallels, headspace is remained foundary weight in placement after real again, can ensure that the weight of foundary weight 70 is for be all pressed on casting mold, foundary weight 70, supporting steel plate 60, parallels, casting mold is made again fully to contact, when pouring into a mould, along with iron buoyancy of water for sand mold 20 is lifted time, the weight of foundary weight 70 is delivered on casting mold by supporting steel plate 60, parallels, rail 40, is unlikely to iron buoyancy of water and is lifted.
Claims (3)
1. pressure of floating a case method, is characterized in that comprising the steps:
Make sandbox: use bolt to connect under casing, raising middle flask, the top box of sandbox side plate composition sandbox, described under casing, raising middle flask, top box are aligned up and down successively and assembly sandbox;
(2) core assembly;
(3) solid pressure core: the outside described raising middle flask being enclosed within the core after core assembly, and raising middle flask and under casing align and are assembled together, then above the core nose multiple steel plate being placed on respectively core, again at least three one steel rails are pressed on the steel plate above core along the direction of core length, rail and the case band of top box is made to intersect in netted, thus by steel plate, whole core is pushed down, then top box is aligned raising middle flask be assembled together;
(4) quicksand: tamped by molding sand between described core and sandbox, forms casting mold;
(5) solid pressure casting mold: place steel plate above casting mold, described steel plate is placed on the steel tank band of the top box of casting mold, is pressed in above steel plate by least seven one steel rails along the direction of casting mold length;
(6) frame puts supporting steel plate: outside casting mold, put the steelframe for supported steel plate along casting mold length direction frame, and supporting steel plate strides across to be placed on steelframe above casting mold and forms horizontal support surface; Then outside casting mold, steelframe is put along casting mold width frame, supporting steel plate strides across to be placed on steelframe above horizontal support surface and casting mold and forms longitudinal bracing face, described horizontal support surface contacts with longitudinal bracing face and forms trapezium structure, headspace between the rail placed above described horizontal support surface and casting mold;
(7) foundary weight is placed: be first placed on supporting steel plate by the foundary weight of 85% ~ 95% of foundary weight gross weight, then highly suitable parallels is placed in the headspace between the rail above horizontal support surface and casting mold, again the foundary weight of 15% ~ 5% of remaining foundary weight gross weight is placed on above supporting steel plate, thus the total weight of foundary weight is pressed on supporting steel plate.
2. as claimed in claim 1 pressure case method of floating, is characterized in that: rail is in step (3) pressed in the top of the steel plate being positioned at center along the direction of sand mold length, two terminations of described rail snap into termination, the front and back core of inner chamber core.
3. as claimed in claim 1 pressure case method of floating, is characterized in that: use " C " type clamp clamping between the under casing of described sandbox, raising middle flask, top box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510376262.2A CN104985117B (en) | 2015-06-27 | 2015-06-27 | Pressure of floating case method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510376262.2A CN104985117B (en) | 2015-06-27 | 2015-06-27 | Pressure of floating case method |
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| CN104985117A true CN104985117A (en) | 2015-10-21 |
| CN104985117B CN104985117B (en) | 2017-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510376262.2A Active CN104985117B (en) | 2015-06-27 | 2015-06-27 | Pressure of floating case method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114433810A (en) * | 2022-02-10 | 2022-05-06 | 鞍钢矿山机械制造有限公司 | 10M3Core iron for pouring casting of rear wall casting of electric bucket |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS561246A (en) * | 1979-06-19 | 1981-01-08 | Kawaguchi Nainenki Chuzo Kk | Frame clamper and automatic clamping correcting and releasing device |
| CN101439398A (en) * | 2008-12-26 | 2009-05-27 | 宁夏共享集团有限责任公司 | Method for casting ultralong, large-sized machine tool casting parts |
| CN202639216U (en) * | 2012-05-11 | 2013-01-02 | 繁昌县琦祥铸造厂 | Iron weight mold for precoated sand |
| CN202894279U (en) * | 2012-09-29 | 2013-04-24 | 南车戚墅堰机车车辆工艺研究所有限公司 | Pressure plate tool for aluminium casting member sand mold low pressure casting production |
| CN203711790U (en) * | 2014-02-26 | 2014-07-16 | 苏州明志科技有限公司 | Self-floating pressing iron for limiting core assembly pouring device |
| CN104084539A (en) * | 2014-06-30 | 2014-10-08 | 薛铁山 | Process for casting hanging bracket front-segment castings |
| CN204108242U (en) * | 2014-09-28 | 2015-01-21 | 玉林市达志机械配件有限公司 | The pressure box fastener of precoated sand swage |
-
2015
- 2015-06-27 CN CN201510376262.2A patent/CN104985117B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS561246A (en) * | 1979-06-19 | 1981-01-08 | Kawaguchi Nainenki Chuzo Kk | Frame clamper and automatic clamping correcting and releasing device |
| CN101439398A (en) * | 2008-12-26 | 2009-05-27 | 宁夏共享集团有限责任公司 | Method for casting ultralong, large-sized machine tool casting parts |
| CN202639216U (en) * | 2012-05-11 | 2013-01-02 | 繁昌县琦祥铸造厂 | Iron weight mold for precoated sand |
| CN202894279U (en) * | 2012-09-29 | 2013-04-24 | 南车戚墅堰机车车辆工艺研究所有限公司 | Pressure plate tool for aluminium casting member sand mold low pressure casting production |
| CN203711790U (en) * | 2014-02-26 | 2014-07-16 | 苏州明志科技有限公司 | Self-floating pressing iron for limiting core assembly pouring device |
| CN104084539A (en) * | 2014-06-30 | 2014-10-08 | 薛铁山 | Process for casting hanging bracket front-segment castings |
| CN204108242U (en) * | 2014-09-28 | 2015-01-21 | 玉林市达志机械配件有限公司 | The pressure box fastener of precoated sand swage |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114433810A (en) * | 2022-02-10 | 2022-05-06 | 鞍钢矿山机械制造有限公司 | 10M3Core iron for pouring casting of rear wall casting of electric bucket |
| CN114433810B (en) * | 2022-02-10 | 2024-02-02 | 鞍钢矿山机械制造有限公司 | 10M 3 Core iron for pouring electric bucket rear wall casting |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104985117B (en) | 2017-03-15 |
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Address after: 750021 550 Beijing West Road, Xixia District, Yinchuan, the Ningxia Hui Autonomous Region Patentee after: KOCEL EQUIPMENT CO., LTD. Address before: 750021 550 Beijing West Road, Xixia District, Yinchuan, the Ningxia Hui Autonomous Region Patentee before: Share Equipment Limited |
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