CN102962397A - Casting mold of conical sand maker breaking wall and casting process - Google Patents
Casting mold of conical sand maker breaking wall and casting process Download PDFInfo
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- CN102962397A CN102962397A CN2012104321892A CN201210432189A CN102962397A CN 102962397 A CN102962397 A CN 102962397A CN 2012104321892 A CN2012104321892 A CN 2012104321892A CN 201210432189 A CN201210432189 A CN 201210432189A CN 102962397 A CN102962397 A CN 102962397A
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Abstract
The invention relates to a casting mold of a conical sand maker breaking wall and a casting process capable of achieving the effect of no shrinkage cavity and effectively improving the cast density during casting feeding of the conical sand maker breaking wall. The casting mold is characterized in that the height of a breaking wall forming mold cavity in the sand box is smaller than the height of a casting riser or the volume of the forming mold cavity is smaller than the volume of the casting riser. The casting process comprises the following steps: casting high chromium cast iron into the breaking wall forming mold cavity and the casting riser, then suspending the sand box on a high-frequency vibration platform for high-frequency vibration, and cooling to obtain the high chromium cast iron breaking wall with a high density. The casting mold and the casting process have the advantages that firstly, the wear resistance of the high chromium cast iron breaking wall is effectively improved, and the sand making cost is greatly reduced; secondly, the feeding effect is good, the cast is high in density, and the occurrence of damage phenomenon is avoided; and thirdly, the wear resistance, the shock resistance and the service life are increased by nearly 5 times, and unexpected technical effects are achieved.
Description
Technical field
The present invention relates to a kind ofly in the casting shrinkage process of circular cone sand making machine crushing wall, can obtain not have shrinkage cavity and can effectively improve the high a kind of circular cone sand making machine crushing wall of casting compactness and water injection molding and casting technique, belong to casting field.
Background technology
CN102380579A, title " casting method of a kind of crushing wall or rolled mortar wall ", comprise the steps: 1) the preparation metal mold: according to the inside and outside metal mold shape of foundry goods shape design, reserve during design and cover sand and allowance, adopt the common straightcarbon steel moulding, by the machine-tooled method moulding; 2) sand is covered in preparation: cover sand and formed by by weight following raw material, and normal sand 80-90 part, imvite 3-5 part, protruding Attapulgite 2-3 part, iron oxide 1-2 part, water 3-5 part mixes above-mentioned raw materials and gets final product; 3) metal type sand-covering: with step 2) preparation the sand that covers evenly be applied in step 1) preparation mo(U)ld face, smearing thickness is 5-8mm, the metal mold that then will cover sand is stand-by 60-80 ℃ of oven dry; 4) smelting and pouring: the composition design of the steel of preparation crushing wall or rolled mortar wall is as follows: C1.3-1.8%, and Si2.5-3.5%, Mn1.8-3.0%, B2.3-2.8%, Cr1.2-2.0%, surplus is iron and inevitable impurity; Smelting technology melts for steel scrap, the pig iron, foundry returns are put into smelting furnace, then add ferrosilicon, ferromanganese, ferro-boron and ferrochrome adjusting component to above-mentioned scope, then skim, after leaving standstill homogenising 15-20 minute, adjust pouring temperature to 1460-1480 ℃, and be poured into step 3) in the casting mold of preparation; 5) cooling and post processing: air-cooled to knockout removing from mould below 300 ℃ after the cast, after sand removal, grinding process, get the foundry goods blank.
CN101954456A, title " manufacture method that is used for the metal mold of gyratory crusher manganese steel crushing wall or rolled mortar wall casting ", (1) are made the natural pattern of crushing wall or rolled mortar wall according to breaking wall of spindle breaker or the different size specification models of rolled mortar wall; (2) shape according to natural pattern manufactures and designs respectively metal mold and the outer metal mold of nearly shape in the nearly shape corresponding wall thickness, integrally-built; (3) near metal mold and closely outside metal mold lay flaring steam vent; (4) nearly interior metal mold and nearly outer metal mold, natural pattern are assemblied on the mold(ing) board, reserve die cavity.
CN101954458A, title " manufacture method of inside and outside metal type sand-covering casting breaking wall of spindle breaker or rolled mortar wall running gate system ", (1) according to breaking wall of spindle breaker or the different size specification model of rolled mortar wall, select bottom pour ladle bag bore dia, i.e. the sprue brick aperture; (2) manufacture and design respectively pouring basin funnel brick, sprue cast tube brick, shunting centre runner brick, cross gate runner brick, bend pipe reducing ingate brick according to the sprue brick aperture; (3) manufacture and design bottom board; (4) with shunting centre runner brick, cross gate runner brick, bend pipe reducing ingate brick, be assembled on the bottom board by technological requirement; (5) sprue cast tube brick is assembled on the centre runner brick of shunting; (6) outer metal mold and the interior metal mold that will cover respectively molding sand are assembled on the bottom board that installs running gate system, buckle the top box that is provided with rising head, and are tightened to the casting mold of an integral body; (7) the pouring basin funnel brick is assembled to sprue cast tube brick upper end, and fixation; (8) with the cast of manganese steel liquid, the insulation cooling, peeling namely obtains crushing wall or rolled mortar wall foundry goods.
CN101954457A, title " manufacture method of inside and outside metal type sand-covering casting manganese steel crushing wall or rolled mortar wall heat preservation knock-off head ", (1) design of rising head and calculating: be that design feature and the main thermal center of the more even annular enclosed foundry goods of wall thickness calculates the rising head effective compencation distance according to crushing wall or rolled mortar wall, determine quantity, shape, size and the installation position of rising head; (2) manufacture and design respectively each constituent element of heat preservation rising head: designing mould is made respectively heat preservation rising head the first half riser buss; Manufacture and design heat preservation rising head the latter half torticollis rising head cover for seat; Manufacture and design the heat preservation riser pad; (3) each constituent element of assembling heat preservation riser buss: when making interior metal mold, outer metal mold and interior metal type sand-covering layer, outer metal type sand-covering layer, cameron core, torticollis rising head cover for seat are assemblied on the interior metal type sand-covering layer together, and flush with the metal mold die joint; When making top box heat preservation riser buss the first half is aimed at torticollis rising head cover for seat, then fill out molding sand and fix, whole molding after the sclerosis of top box molding sand; (4) will cover the outer metal mold of molding sand and the interior metal mold having covered molding sand and torticollis rising head cover for seat is installed is assemblied on the bottom board and fastening; Buckle the top box that heat preservation riser buss the first half is installed, and be tightened to the casting mold of an integral body with inside and outside metal mold, then namely pourable, the disconnected rising head of bump again after unpacking.
The common Shortcomings part of above-mentioned background technology: the one, wear no resistance, cause broken cost high; The 2nd, the feeding effect is bad, and casting compactness is poor, very easily produces damaged.
Summary of the invention
Purpose of design: avoid the weak point in the background technology, design and a kind ofly in the casting shrinkage process of circular cone sand making machine crushing wall, can obtain not have shrinkage cavity and can effectively improve the high a kind of circular cone sand making machine crushing wall of casting compactness and water injection molding and casting technique.
Design: in order to realize above-mentioned purpose of design.1, the height of crushing wall shaping mold cavity is one of technical characterictic of the present invention less than pouring into a mould the design less than cast rising head volume of riser height or shaping mold cavity volume in the sandbox.The purpose of doing like this is: in casting mold, the die cavity of rising head is the cavity of storage liquid metal, supply metal when foundry goods forms, the effect that prevents shrinkage cavity and porosity, exhaust and collection slag is arranged, and the Main Function of rising head to be the liquid state of compensation molten metal in die cavity shrink and casting solidification process in contraction, do not have the sound casting of shrinkage cavity with acquisition.Because when foundry goods cools off in casting mold, solidify first at the thinnest position, and its contraction can be by near thicker partial-compensation; When solidifying than thickness portion, can be compensated by thick again; When thick solidifies, as can not get external compensation, this place will form large shrinkage cavity.In this case, the effect of rising head will compensate the part of foundry goods final set exactly, thus to place foundry goods top or the side at thick position, and it solidify the thick that requirement is later than foundry goods; Secondly, the density of foundry goods just depends on the distribution of rich chromium cast iron metallographic structure, the application adopts rising head to add the mode of the Nature pressurization, not only avoided the generation of shrinkage cavity and porosity situation in the high chromium crushing wall foundry goods, and the density that makes high chromium crushing wall foundry goods obtains the raising of essence, and wear resistence and resistance to impact improve greatly.2, the sandbox that will pour into a mould rich chromium cast iron hangs onto the design of carrying out dither on the dither platform, is two of technical characterictic of the present invention.The purpose of doing like this is: mutually collide and smash because dither crystallization cast can make crystal grain that crystal grain occurs in growth course, make it to produce recrystallization, smash again, recrystallization and reach grain refinement, and vibration makes in the crystal grain collision fragmentation, also increased the chance that crystal grain peels off from the type wall, gas, impurity in the liquid metals are discharged effectively, but also that the metallographic structure that can make rich chromium cast iron distributes is more reasonable, density is higher, and wearability and anti-impact force are higher.The application is in actual destructive testing, and the wearability of high-chromium casting and impact resistance improve more than five times after its moulding, have improved nearly 5 times service life, have obtained beyond thought technique effect.3, cast rising head one circle is provided with the design of multi-disc rising head partition, is three of technical characterictic of the present invention.The purpose of doing like this is: large by this rising head volume, if if do not adopt the rising head partition that rising head is divided into many pieces, then finish high-chromium casting---after the cast of crushing wall, not only be difficult to rising head is cut away, and cut by force and then affect the high-chromium casting inherent quality; If adopt the rising head partition that rising head is divided into many pieces, then finish high-chromium casting---after the cast of crushing wall, can easily rising head be cut away from foundry goods.
Technical scheme 1: a kind of circular cone sand making machine crushing wall cast die cast technique, the height of crushing wall shaping mold cavity is less than pouring into a mould riser height or shaping mold cavity volume less than cast rising head volume in the sandbox, rich chromium cast iron is poured in crushing wall shaping mold cavity and the cast rising head, then sandbox is hung onto and carry out dither on the dither platform, can obtain the high rich chromium cast iron crushing wall of packing after the cooling.
Technical scheme 2: a kind of dither platform that waters injection molding vibration moulding for the circular cone sand making machine crushing wall, four jiaos of rectangle supports are equipped with respectively one or more stage clips, be equipped with the pressure-bearing shaking platform on the stage clip, dither is positioned at middle part, the pressure-bearing shaking platform back side and drives pressure-bearing shaking platform dither.
Technical scheme 3: a kind of circular cone sand making machine crushing wall waters injection molding, comprises sandbox, and the height of crushing wall shaping mold cavity is less than pouring into a mould riser height or shaping mold cavity volume less than cast rising head volume in the sandbox, and cast rising head one circle is provided with multi-disc rising head partition.
The present invention compares with background technology, and the one, effectively improved the wearability of rich chromium cast iron crushing wall, reduced widely sand cost processed; The 2nd, feeding is effective, and casting compactness is high, has avoided the generation of disrepair phenomenon; The 3rd, have improved nearly 5 times in wearability, impact resistance and service life, obtained beyond thought technique effect.
Description of drawings
Fig. 1 is that the circular cone sand making machine crushing wall waters the injection-molded structure schematic diagram.
Fig. 2 is that the circular cone sand making machine crushing wall waters injection molding plan structure schematic diagram.
Fig. 3 is the dither platform schematic diagram that waters injection molding for the circular cone sand making machine crushing wall.
The specific embodiment
Embodiment 1: with reference to accompanying drawing 1-3.A kind of circular cone sand making machine crushing wall cast die cast technique, the height of crushing wall shaping mold cavity 2 is less than pouring into a mould rising head 3 height or shaping mold cavity 2 volumes less than cast rising head 3 volumes in the sandbox 1, or the weight of described rich chromium cast iron crushing wall is less than the weight of cast rising head, rich chromium cast iron is poured in crushing wall shaping mold cavity 2 and the cast rising head 3, then sandbox 1 is hung onto and carry out dither on the dither platform, can obtain the high rich chromium cast iron crushing wall of packing after the cooling.Described crushing wall shaping mold cavity 2 inner and outer walls are equipped with the built-in chill 4 of polylith and external chill 5, and chill 4 and 5 is uniform.Described cast rising head 3 one circles are provided with multi-disc rising head partition 6; Described cast rising head 3 is provided with many cross gates 7.The vibration frequency of described dither platform is greater than 2000r/min, and amplitude is less than 1.3mm, and can regulate arbitrarily as required in its scope, and time of vibration is fixed according to the size of foundry goods, generally greater than 10mim, less than 30mim.
Embodiment 2: with reference to accompanying drawing 3.A kind of dither platform that waters injection molding for the circular cone sand making machine crushing wall, 101 4 jiaos of rectangle supports are equipped with respectively one or more stage clips 103, be equipped with pressure-bearing shaking platform 104 on the stage clip 103, dither 105 is positioned at middle part, pressure-bearing shaking platform 104 back sides and drives pressure-bearing shaking platform dither.Described stage clip 103 lower surfaces are equipped with pressing plate 102.Four jiaos of described pressure-bearing shaking platform 104 bedplate surfaces are provided with dihedral baffle plate 105.Described pressure-bearing shaking platform 104 is made of platen 109, riser 108 and four jiaos of spring top boards 107, and riser 108 vertically is welded on platen 109 back sides, and four jiaos of spring top boards 107 are welded on 109 4 jiaos of platens by riser.
Embodiment 3: with reference to accompanying drawing 1.A kind of circular cone sand making machine crushing wall waters injection molding, comprises sandbox 1, and the height of crushing wall shaping mold cavity 2 is less than pouring into a mould rising head 3 height or shaping mold cavity 2 volumes less than cast rising head 3 volumes in the sandbox 1, and cast rising head 3 one circles are provided with multi-disc rising head partition 6.Described crushing wall shaping mold cavity 2 inner and outer walls are equipped with the built-in chill 4 of polylith and external chill 5.Described cast rising head 3 is provided with many cross gates 7.
What need to understand is: although above-described embodiment is to the mentality of designing of the present invention detailed text description of contrasting; but these text descriptions; just the simple text of mentality of designing of the present invention is described; rather than to the restriction of mentality of designing of the present invention; any combination, increase or modification that does not exceed mentality of designing of the present invention all falls within the scope of protection of the present invention.
Claims (10)
1. a circular cone sand making machine crushing wall is poured into a mould die cast technique, it is characterized in that: the height of crushing wall shaping mold cavity (2) is less than pouring into a mould rising head (3) height or shaping mold cavity (2) volume less than cast rising head (3) volume in the sandbox (1), rich chromium cast iron is poured in crushing wall shaping mold cavity (2) and the cast rising head (3), then sandbox (1) is hung onto and carry out dither on the dither platform, can obtain the high rich chromium cast iron crushing wall of packing after the cooling.
2. circular cone sand making machine crushing wall according to claim 1 is poured into a mould die cast technique, it is characterized in that: the weight of described rich chromium cast iron crushing wall is less than the weight of cast rising head.
3. circular cone sand making machine crushing wall according to claim 1 is poured into a mould die cast technique, it is characterized in that: described cast rising head (3) one circles are provided with multi-disc rising head partition (6).
4. circular cone sand making machine crushing wall according to claim 1 is poured into a mould die cast technique, and it is characterized in that: the vibration frequency of described dither platform is greater than 2000r/min, and amplitude is less than 1.3mm.
5. a circular cone sand making machine crushing wall waters injection molding, comprise sandbox (1), it is characterized in that: the height of crushing wall shaping mold cavity (2) is less than pouring into a mould rising head (3) height or shaping mold cavity (2) volume less than cast rising head (3) volume in the sandbox (1), and cast rising head (3) one circles are provided with multi-disc rising head partition (6).
6. the circular cone sand making machine crushing wall waters injection molding according to claim 1 or 5, it is characterized in that: described crushing wall shaping mold cavity (2) inner and outer wall is equipped with the built-in chill of polylith (4) and external chill (5).
According to claim 1 or 4 described circular cone sand making machine crushing walls water injection molding, it is characterized in that: described cast rising head (3) is provided with many cross gates (7).
8. one kind is used for the dither platform that the circular cone sand making machine crushing wall waters injection molding, it is characterized in that: (101) four jiaos of rectangle supports are equipped with respectively one or more stage clips (103), be equipped with pressure-bearing shaking platform (104) on the stage clip (103), dither (105) is positioned at middle part, pressure-bearing shaking platform (104) back side and drives pressure-bearing shaking platform dither.
9. according to claim 8ly water the dither platform of injection molding for the circular cone sand making machine crushing wall, it is characterized in that: described stage clip (103) lower surface is equipped with pressing plate (102); Four jiaos of described pressure-bearing shaking platform (104) bedplate surfaces are provided with dihedral baffle plate (105).
10. the dither platform that waters injection molding for the circular cone sand making machine crushing wall according to claim 8, it is characterized in that: described pressure-bearing shaking platform (104) is made of platen (109), riser (108) and four jiaos of spring top boards (107), riser (108) vertically is welded on platen (109) back side, and four jiaos of spring top boards (107) are welded on (109) four jiaos of platens by riser.
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Cited By (8)
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| CN104759606A (en) * | 2015-04-17 | 2015-07-08 | 浙江机电职业技术学院 | Rapid progressive solidification technique device for high manganese steel rolling mortal wall casting |
| CN104759594A (en) * | 2015-04-17 | 2015-07-08 | 浙江机电职业技术学院 | Fast progressive solidification device for high manganese steel broken wall casting |
| CN105328122A (en) * | 2015-12-01 | 2016-02-17 | 济南方德利模具有限公司 | Sand-coated iron mold casting device for friction rings of brake discs for high-speed rails and casting technology |
| CN108115096A (en) * | 2017-12-22 | 2018-06-05 | 天津万立鑫晟新材料技术研究院有限公司 | A kind of shrinkage compensation method of template casting |
| CN113523244A (en) * | 2021-07-09 | 2021-10-22 | 邯郸慧桥复合材料科技有限公司 | Solid-liquid composite casting method for weldable bimetal wear-resistant part |
| CN115846630A (en) * | 2023-02-20 | 2023-03-28 | 蓬莱三和铸造有限公司 | Nodular cast iron casting processingequipment |
| CN116967405A (en) * | 2023-08-18 | 2023-10-31 | 重庆博悦机械制造有限公司 | Cone crushing wall and method for producing same |
| CN116967405B (en) * | 2023-08-18 | 2024-04-16 | 重庆博悦机械制造有限公司 | Cone crushing wall and method for producing same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104759606A (en) * | 2015-04-17 | 2015-07-08 | 浙江机电职业技术学院 | Rapid progressive solidification technique device for high manganese steel rolling mortal wall casting |
| CN104759594A (en) * | 2015-04-17 | 2015-07-08 | 浙江机电职业技术学院 | Fast progressive solidification device for high manganese steel broken wall casting |
| CN105328122A (en) * | 2015-12-01 | 2016-02-17 | 济南方德利模具有限公司 | Sand-coated iron mold casting device for friction rings of brake discs for high-speed rails and casting technology |
| CN108115096A (en) * | 2017-12-22 | 2018-06-05 | 天津万立鑫晟新材料技术研究院有限公司 | A kind of shrinkage compensation method of template casting |
| CN113523244A (en) * | 2021-07-09 | 2021-10-22 | 邯郸慧桥复合材料科技有限公司 | Solid-liquid composite casting method for weldable bimetal wear-resistant part |
| CN113523244B (en) * | 2021-07-09 | 2022-04-01 | 邯郸慧桥复合材料科技有限公司 | Solid-liquid composite casting method for weldable bimetal wear-resistant part |
| CN115846630A (en) * | 2023-02-20 | 2023-03-28 | 蓬莱三和铸造有限公司 | Nodular cast iron casting processingequipment |
| CN115846630B (en) * | 2023-02-20 | 2023-04-28 | 蓬莱三和铸造有限公司 | Ductile cast iron casting device |
| CN116967405A (en) * | 2023-08-18 | 2023-10-31 | 重庆博悦机械制造有限公司 | Cone crushing wall and method for producing same |
| CN116967405B (en) * | 2023-08-18 | 2024-04-16 | 重庆博悦机械制造有限公司 | Cone crushing wall and method for producing same |
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