CN102962398B - A kind of circular cone sand making machine rolled mortar wall dither casting moulds and casting technique - Google Patents
A kind of circular cone sand making machine rolled mortar wall dither casting moulds and casting technique Download PDFInfo
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- CN102962398B CN102962398B CN201210432190.5A CN201210432190A CN102962398B CN 102962398 B CN102962398 B CN 102962398B CN 201210432190 A CN201210432190 A CN 201210432190A CN 102962398 B CN102962398 B CN 102962398B
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Abstract
The present invention relates to a kind of can acquisition in the casting shrinkage process of circular cone sand making machine rolled mortar wall there is no shrinkage cavity and effectively can improve the high a kind of circular cone sand making machine rolled mortar wall dither casting moulds of casting compactness and casting technique, sandbox is positioned on dither platform, in sandbox, the height of rolled mortar wall shaping mold cavity is less than cast riser height or shaping mold cavity volume is less than cast rising head volume, rich chromium cast iron is poured in rolled mortar wall shaping mold cavity and cast rising head, then dither platform carries out dither, the rich chromium cast iron rolled mortar wall that packing is high can be obtained after cooling.Advantage: one is the wearability that effectively improve rich chromium cast iron rolled mortar wall, greatly reduces sand cost processed; Two is that feeding effect is good, and casting compactness is high, avoids the generation of disrepair phenomenon; Three are wearabilities, impact resistance and improve nearly 5 times service life, achieve beyond thought technique effect.
Description
Technical field
The present invention relates to a kind of can acquisition in the casting shrinkage process of circular cone sand making machine rolled mortar wall there is no shrinkage cavity and effectively can improve the high a kind of circular cone sand making machine rolled mortar wall dither casting moulds of casting compactness and casting technique, belong to casting field.
Background technology
CN102380579A, title " casting method of a kind of rolled mortar wall or rolled mortar wall ", comprise the steps: 1) prepare metal mold: according to the inside and outside metal mold shape of cast shape design, reserve during design and cover sand and allowance, adopt common straightcarbon steel moulding, shaping by machine-tooled method; 2) sand is covered in preparation: cover sand and be made up of following raw material by weight, normal sand 80-90 part, imvite 3-5 part, convex Attapulgite 2-3 part, iron oxide 1-2 part, water 3-5 part, mixes above-mentioned raw materials; 3) metal type sand-covering: by step 2) prepare cover sand uniform application in step 1) mo(U)ld face prepared, smearing thickness is 5-8mm, then by stand-by 60-80 DEG C of oven dry for the metal mold covering sand; 4) smelting and pouring: the composition design preparing the steel of rolled mortar wall or rolled mortar wall is as follows: C1.3-1.8%, Si2.5-3.5%, Mn1.8-3.0%, B2.3-2.8%, Cr1.2-2.0%, surplus is iron and inevitable impurity; Smelting technology is for put into smelting furnace melt steel scrap, the pig iron, foundry returns, then ferrosilicon, ferromanganese, ferro-boron and ferrochrome adjusting component is added to above-mentioned scope, then skim, leave standstill after homogenising 15-20 minute, adjustment pouring temperature to 1460-1480 DEG C, and is poured into step 3) in the casting mold prepared; 5) cooling and post processing: air-cooled to less than 300 DEG C knockout removing from moulds after cast, obtains foundry goods blank after sand removal, grinding process.
CN101954456A, title " manufacture method for the metal mold that gyratory crusher manganese steel rolled mortar wall or rolled mortar wall are cast ", (1) according to gyratory crusher rolled mortar wall or the different size specification model of rolled mortar wall, the natural pattern of rolled mortar wall or rolled mortar wall is manufactured; (2) metal mold and the outer metal mold of nearly shape in corresponding wall thickness, integrally-built nearly shape is manufactured and designed respectively according to the shape of natural pattern; (3) in closely, metal mold and nearly outer metal mold lay flaring steam vent; (4) nearly interior metal mold and nearly outer metal mold, natural pattern are assemblied on mold(ing) board, reserved die cavity.
CN101954458A, title " manufacture method of inside and outside metal type sand-covering casting gyratory crusher rolled mortar wall or rolled mortar wall running gate system ", (1) according to gyratory crusher rolled mortar wall or the different size specification model of rolled mortar wall, select bottom pour ladle bag bore dia, i.e. sprue brick aperture; (2) pouring basin funnel brick, sprue cast tube brick, shunting centre runner brick, cross gate runner brick, bend pipe reducing ingate brick is manufactured and designed respectively according to sprue brick aperture; (3) bottom board is manufactured and designed; (4) by shunting centre runner brick, cross gate runner brick, bend pipe reducing ingate brick, be assembled on bottom board by technological requirement; (5) sprue cast tube brick is assembled on the centre runner brick of shunting; (6) respectively the outer metal mold and interior metal mold of having covered molding sand are assembled to and install on the bottom board of running gate system, buckle the top box being provided with rising head, and be tightened to an overall casting mold; (7) pouring basin funnel brick is assembled to sprue cast tube brick upper end, and fixation; (8) with the cast of manganese steel liquid, insulation cooling, peeling, namely obtains rolled mortar wall or rolled mortar wall foundry goods.
CN101954457A, title " manufacture method of inside and outside metal type sand-covering casting manganese steel rolled mortar wall or rolled mortar wall heat preservation knock-off head ", (1) Design calcu-lation of rising head: the design feature and the main thermal center calculating rising head effective compencation distance that according to rolled mortar wall or rolled mortar wall are the more even annular enclosed foundry goods of wall thickness, determines the quantity of rising head, shape, size and installation position; (2) each constituent element of heat preservation rising head is manufactured and designed respectively: designing mould manufactures heat preservation rising head the first half riser buss respectively; Manufacture and design heat preservation rising head the latter half torticollis rising head cover for seat; Manufacture and design heat preservation riser pad; (3) assemble heat preservation riser buss each constituent element: metal mold in manufacturing, outer metal mold and interior metal type sand-covering layer, outer metal type sand-covering layer time, cameron core, torticollis rising head cover for seat are assemblied in together on interior metal type sand-covering layer, and flush with metal mold die joint; When manufacturing 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, overall molding after the sclerosis of top box molding sand; (4) will cover the outer metal mold of molding sand and cover molding sand and metal mold in torticollis rising head cover for seat is installed and to be assemblied on bottom board and fastening; Buckle the top box being provided with heat preservation riser buss the first half, and be tightened to an overall casting mold with inside and outside metal mold, then namely pourable, clash into disconnected rising head again after unpacking.
The common Shortcomings part of above-mentioned background technology: one is wear no resistance, causes broken cost to remain high; Two is that feeding effect is bad, and casting compactness is poor, very easily produces breakage.
Summary of the invention
Purpose of design: avoid the weak point in background technology, designing a kind of can acquisition in the casting shrinkage process of circular cone sand making machine rolled mortar wall does not have shrinkage cavity and effectively can improve the high a kind of circular cone sand making machine rolled mortar wall dither casting moulds of casting compactness and casting technique.
Design: in order to realize above-mentioned purpose of design.1, in sandbox, the height of rolled mortar wall shaping mold cavity is less than the design that cast riser height or shaping mold cavity volume be less than cast rising head volume, is one of technical characteristic of the present invention.The object done like this is: in casting mold, the die cavity of rising head is the cavity of storage liquid metal, the supply metal when foundry goods is formed, there is the effect preventing shrinkage cavity and porosity, exhaust and collection slag, and the Main Function of rising head compensates the liquid contraction of molten metal in die cavity and the contraction in casting solidification process, to obtain the sound casting not having shrinkage cavity.Because when foundry goods cools in casting mold, the thinnest position is first solidified, and its contraction can by neighbouring thicker partial-compensation; Thicker is divided when solidifying, and can be compensated again by thick; 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, so top or the side at the thickest position of foundry goods will be placed in, and it solidify the thick that requirement is later than foundry goods; Secondly, the density height of foundry goods 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 avoid the generation of shrinkage cavity and porosity situation in high chromium rolled mortar wall foundry goods, and making the density of high chromium rolled mortar wall foundry goods obtain the raising of essence, wear resistence and resistance to impact improve greatly.2, the sandbox of cast rich chromium cast iron being hung onto design dither platform carrying out dither, is technical characteristic two of the present invention.The object done like this is: mutually collide 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 is when making crystal grain collide fragmentation, too increase the chance that crystal grain peels off from type wall, so not only can make the gas in liquid metals, impurity discharges effectively, but also the metallographic structure of rich chromium cast iron can be made to distribute more reasonable, density is higher, wearability and anti-impact force higher.The application is in actual destructive testing, and wearability, the impact resistance of its shaping rear high-chromium casting and improve nearly 5 times service life, achieve beyond thought technique effect.3, pouring into a mould the design that rising head one circle is provided with multi-disc rising head partition, is technical characteristic three of the present invention.The object done like this is: large by this rising head volume, if if do not adopt rising head partition rising head to be divided into many blocks, then complete high-chromium casting---after the cast of rolled mortar wall, be not only difficult to rising head to cut away, and cut by force and then affect high-chromium casting inherent quality; If adopt rising head partition rising head to be divided into many blocks, then completing high-chromium casting---after the cast of rolled mortar wall, can easily rising head be cut away from foundry goods.
Technical scheme 1: a kind of circular cone sand making machine rolled mortar wall dither casting moulds, sandbox is positioned on dither platform, in sandbox, the height of rolled mortar wall shaping mold cavity is less than cast riser height or shaping mold cavity volume is less than cast rising head volume, and cast rising head one circle is provided with multi-disc rising head partition.
Technical scheme 2: a kind of circular cone sand making machine rolled mortar wall dither casting moulds casting technique, sandbox is positioned on dither platform, in sandbox, the height of rolled mortar wall shaping mold cavity is less than cast riser height or shaping mold cavity volume is less than cast rising head volume, rich chromium cast iron is poured in rolled mortar wall shaping mold cavity and cast rising head, then dither platform carries out dither, the rich chromium cast iron rolled mortar wall that packing is high after cooling, can be obtained.
The present invention is compared with background technology, and one is the wearability that effectively improve rich chromium cast iron rolled mortar wall, greatly reduces sand cost processed; Two is that feeding effect is good, and casting compactness is high, avoids the generation of disrepair phenomenon; Three are wearabilities, impact resistance and improve nearly 5 times service life, achieve beyond thought technique effect.
Accompanying drawing explanation
Fig. 1 is circular cone sand making machine rolled mortar wall dither casting moulds structural representation.
Fig. 2 is the fragmentary top TV structure schematic diagram of circular cone sand making machine rolled mortar wall dither casting moulds.
Fig. 3 is the structural representation of dither platform.
Detailed description of the invention
Embodiment 1: with reference to accompanying drawing 1-3.A kind of circular cone sand making machine rolled mortar wall dither casting moulds, sandbox 1 is positioned on dither platform, in sandbox 1, the height of rolled mortar wall shaping mold cavity 2 is less than cast rising head 3 height or shaping mold cavity 2 volume is less than cast rising head 3 volume, and cast rising head 3 one circle is provided with multi-disc rising head partition 6.Described rolled mortar wall shaping mold cavity 2 inner and outer wall is equipped with the built-in chill of polylith 4 and external chill 5.Described cast rising head 3 is provided with many cross gates 7.The rectangle support 101 4 jiaos of described dither platform is equipped with one or more stage clip 103 respectively, stage clip 103 is equipped with pressure-bearing shaking platform 104, and dither 106 to be positioned in the middle part of pressure-bearing shaking platform 104 back side and to drive pressure-bearing shaking platform dither.Described stage clip 103 lower surface is equipped with pressing plate 102; Described pressure-bearing shaking platform 104 bedplate surface corner is provided with dihedral baffle plate 105.Described pressure-bearing shaking platform 104 is made up of platen 109, riser 108 and corner spring top board 107, and riser 108 is vertically welded on platen 109 back side, and corner spring top board 107 is welded on platen 109 4 jiaos by riser.The vibration frequency of described dither platform is greater than 2000Hz/min, and amplitude is less than 1.3mm, and time of vibration is fixed according to foundry goods size, and can regulate arbitrarily as required within the scope of it, is generally greater than 10mim, is less than 30mim.
Embodiment 2: on the basis of embodiment 1, a kind of circular cone sand making machine rolled mortar wall dither casting moulds casting technique, sandbox 1 is positioned on dither platform, in sandbox 1, the height of rolled mortar wall shaping mold cavity 2 is less than cast rising head 3 height or shaping mold cavity 2 volume is less than cast rising head 3 volume, rich chromium cast iron is poured in rolled mortar wall shaping mold cavity 2 and cast rising head 3, then dither platform carries out dither, the rich chromium cast iron rolled mortar wall that packing is high after cooling, can be obtained.The weight of described rich chromium cast iron rolled mortar wall is less than the weight of cast rising head.Described cast rising head 3 one circle is provided with multi-disc rising head partition 6.The vibration frequency of described dither platform is greater than 2000Hz/min, and amplitude is less than 1.3mm, and time of vibration is fixed according to foundry goods size, is generally greater than 10mim, is less than 30mim.
It is to be understood that: although above-described embodiment to be contrasted detailed text description to mentality of designing of the present invention; but these text descriptions; just the simple text of mentality of designing of the present invention is described; instead of the restriction to mentality of designing of the present invention; any do not exceed mentality of designing of the present invention combination, increase or amendment, all fall within the scope of protection of the present invention.
Claims (5)
1. a circular cone sand making machine rolled mortar wall dither casting moulds, it is characterized in that: sandbox (1) is positioned on dither platform, rectangle support (101) corner of dither platform is equipped with one or more stage clip (103) respectively, stage clip (103) is equipped with pressure-bearing shaking platform (104), dither (106) to be positioned in the middle part of pressure-bearing shaking platform (104) back side and to drive pressure-bearing shaking platform dither, the height of the middle rolled mortar wall shaping mold cavity (2) of sandbox (1) is less than cast rising head (3) height or shaping mold cavity (2) volume is less than cast rising head (3) volume, cast rising head (3) circle is provided with multi-disc rising head partition (6), cast rising head (3) is provided with many cross gates (7), rich chromium cast iron is poured in rolled mortar wall shaping mold cavity (2) and cast rising head (3), then dither platform carries out dither, the rich chromium cast iron rolled mortar wall that packing is high can be obtained after cooling.
2. circular cone sand making machine rolled mortar wall dither casting moulds according to claim 1, is characterized in that: described rolled mortar wall shaping mold cavity (2) inner and outer wall is equipped with the built-in chill of polylith (4) and external chill (5).
3. circular cone sand making machine rolled mortar wall dither casting moulds according to claim 1, is characterized in that: described stage clip (103) lower surface is equipped with pressing plate (102); Described pressure-bearing shaking platform (104) bedplate surface corner is provided with dihedral baffle plate (105).
4. circular cone sand making machine rolled mortar wall dither casting moulds according to claim 1, it is characterized in that: described pressure-bearing shaking platform (104) is made up of platen (109), riser (108) and corner spring top board (107), riser (108) is vertically welded on platen (109) back side, and corner spring top board (107) is welded on platen (109) corner by riser.
5. circular cone sand making machine rolled mortar wall dither casting moulds according to claim 1, is characterized in that: the weight of described rich chromium cast iron rolled mortar wall is less than the weight of cast rising head.
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| CN201210432190.5A CN102962398B (en) | 2012-11-02 | 2012-11-02 | A kind of circular cone sand making machine rolled mortar wall dither casting moulds and casting technique |
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| CN201210432190.5A CN102962398B (en) | 2012-11-02 | 2012-11-02 | A kind of circular cone sand making machine rolled mortar wall dither casting moulds and casting technique |
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| CN102962398B true CN102962398B (en) | 2015-10-21 |
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Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104801384B (en) * | 2015-04-03 | 2018-07-03 | 浙江双金机械集团股份有限公司 | The circular cone sand making machine rolled mortar wall and production method be made of potassium steel and high-carbon chromium steel |
| CN104888885B (en) * | 2015-04-03 | 2018-10-26 | 浙江双金机械集团股份有限公司 | Circular cone sand making machine two-component rolls sand chamber assembly processed and production method |
| CN104801378B (en) * | 2015-04-03 | 2018-11-06 | 浙江双金机械集团股份有限公司 | Two-component circular cone sand making machine rolled mortar wall and production method |
| CN104801368B (en) * | 2015-04-03 | 2019-01-25 | 浙江双金机械集团股份有限公司 | The gyratory crusher rolled mortar wall and production method being made of potassium steel and high-carbon chromium steel |
| CN104801377B (en) * | 2015-04-03 | 2019-03-29 | 浙江双金机械集团股份有限公司 | Diameter is less than the gyratory crusher two-component rolled mortar wall and method of 2000mm |
| CN104801370B (en) * | 2015-04-03 | 2019-01-25 | 浙江双金机械集团股份有限公司 | Two-component gyratory crusher rolled mortar wall and production method |
| CN104801369B (en) * | 2015-04-03 | 2018-12-21 | 浙江双金机械集团股份有限公司 | The gyratory crusher rolled mortar wall and method being made of Mn13 and rich chromium cast iron |
| CN104801390B (en) * | 2015-04-03 | 2018-12-21 | 浙江双金机械集团股份有限公司 | The circular cone sand making machine rolled mortar wall and method being made of Mn13 and rich chromium cast iron |
| CN104801379B (en) * | 2015-04-03 | 2018-12-21 | 浙江双金机械集团股份有限公司 | Gyratory crusher fission clamping rolled mortar wall and method of the diameter less than 2000mm |
| CN104801373B (en) * | 2015-04-03 | 2018-07-13 | 浙江双金机械集团股份有限公司 | The circular cone sand making machine rolled mortar wall and production method be made of two-component materials |
| CN104801374B (en) * | 2015-04-03 | 2018-07-03 | 浙江双金机械集团股份有限公司 | Diameter is less than the circular cone sand making machine two-component rolled mortar wall and method of 2000mm |
| CN104801385B (en) * | 2015-04-03 | 2019-07-05 | 浙江双金机械集团股份有限公司 | The gyratory crusher rolled mortar wall and production method being made of two-component materials |
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