CN105364020B - The riser-free casting method of flywheel casting mold and the flywheel casting mold - Google Patents

The riser-free casting method of flywheel casting mold and the flywheel casting mold Download PDF

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Publication number
CN105364020B
CN105364020B CN201510879905.5A CN201510879905A CN105364020B CN 105364020 B CN105364020 B CN 105364020B CN 201510879905 A CN201510879905 A CN 201510879905A CN 105364020 B CN105364020 B CN 105364020B
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China
Prior art keywords
mold
casting
flywheel
casting mold
sand
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CN201510879905.5A
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CN105364020A (en
Inventor
徐耀刚
李红阳
朱红明
胡忠强
胡明浪
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SIFANG GROUP CO ZHEJIANG
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SIFANG GROUP CO ZHEJIANG
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C9/00Moulds or cores; Moulding processes
    • B22C9/22Moulds for peculiarly-shaped castings
    • B22C9/28Moulds for peculiarly-shaped castings for wheels, rolls, or rollers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C9/00Moulds or cores; Moulding processes
    • B22C9/02Sand moulds or like moulds for shaped castings
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C9/00Moulds or cores; Moulding processes
    • B22C9/08Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
    • B22C9/082Sprues, pouring cups
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C9/00Moulds or cores; Moulding processes
    • B22C9/08Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
    • B22C9/086Filters
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C9/00Moulds or cores; Moulding processes
    • B22C9/10Cores; Manufacture or installation of cores

Abstract

The invention discloses a kind of riser-free casting method of flywheel casting mold and the flywheel casting mold, flywheel casting mold includes on the casting mold of upper and lower overlapping placement sand mold under sand mold and casting mold, on the casting mold flywheel die cavity is correspondingly arranged under sand mold and casting mold on sand mold, the flywheel die cavity center of sand mold is provided with cylinder loam core under casting mold, it is close at the top of cylinder loam core on the flywheel die cavity of sand mold on casting mold, sand mold is provided with the air flue directly over cylinder loam core on the casting mold, sand mold is provided with sprue on the casting mold, sand mold is provided with ingate under casting mold, sprue connects with ingate, ingate connects with flywheel die cavity, the sprue bottom is provided with filter net sheet.Methods described includes the lower sand mold of rounding post loam core, system, falls into sand mold, mould assembling and fastening on cylinder loam core and filter net sheet, system, cast, unpacking and cleaning casting step.After the invention, there is simple and reasonable, production and processing convenience, yield rate height and the advantages such as cost and percent defective are low.

Description

The riser-free casting method of flywheel casting mold and the flywheel casting mold
Technical field
The invention is related to machine casting field, the flywheel casting mold of particularly a kind of engine and the nothing of the flywheel casting mold Rising head casting method.
Background technology
Flywheel be it is a kind of with appropriate rotary inertia, serve storage and discharge kinetic energy rotating mechanism, for reducing machine The velocity perturbation of tool operation process.At present, the casting of flywheel is carried out using green-sand forging type mostly, is provided with longer pour Road and rising head, runner system melts down carrys out greatly inconvenience to casting strip, and this mode reduces the product yield of casting, increases Add manufacturing procedure, and the defects of burning into sand, cinder hole and lift case easily occur.Therefore, many manufacturers and knowledgeable people are for upper State the defects of existing to be developed and developed, but there has been no comparatively ideal product so far to emerge.
The content of the invention
To overcome above-mentioned deficiency present in existing flywheel casting mold and casting process, first purpose of the invention is to carry For a kind of simple and reasonable, easy for operation, high-quality and efficient flywheel casting mold, another object is that improve technological process it is short, The riser-free casting method that yield rate is high, percent defective is low, production cost saves.
The invention solves technical scheme used by above-mentioned technical problem, including sand on the casting mold of overlapping placement up and down Sand mold under type and casting mold, it is characterized in that:On described casting mold flywheel die cavity, casting mold are correspondingly arranged under sand mold and casting mold on sand mold The flywheel die cavity center of lower sand mold is provided with cylinder loam core, is close at the top of cylinder loam core on the flywheel die cavity of sand mold on casting mold, Sand mold is provided with the air flue directly over cylinder loam core on described casting mold, and sand mold is provided with sprue on described casting mold, Sand mold is provided with ingate under casting mold, and sprue connects with ingate, and ingate connects with flywheel die cavity, described sprue bottom Portion is provided with filter net sheet, and described sprue is arranged on the surface of flywheel arm lightening hole, and the top of the sprue is Tubaeform, middle part is cylinder, bottom is taper.
The further scheme of the invention, the filter net sheet are made for fire clay, and profile is coincide with sprue bottom.
The further scheme of the invention, the cylinder loam core is made using cold core sand, with 1:10 demoulding taper.
The riser-free casting method of flywheel casting mold, comprises the following steps described in the invention:
Step 1 rounding post loam core:Make cylinder loam core using cold core mechanism;
Sand mold under step 2 casting mold processed:Sand mold under casting mold is made using moulding machine;
Step 3 falls into cylinder loam core and filter net sheet:Fallen under the casting mold made in sand mold cylinder loam core and Under the casting mold of sprue bottom position filter net sheet is put into sand mold;
Sand mold on step 4 casting mold processed:Sand mold on casting mold is made using moulding machine;
Step 5 mould assembling and fastening:Sand mold merges with sand mold under casting mold on casting mold, and is fastened with box fastener;
Step 6 is poured into a mould:It is that 1380 DEG C~1450 DEG C molten iron inject flywheel die cavity, cast from sprue and ingate by temperature Time is 13 seconds~17 seconds;
Step 7 is unpacked and cleaning casting:Shake-out Time is 40 points~45 points, opens sandbox and takes out Wheel casting, clears up Cast gate and burr.
The further scheme of the invention, the flywheel material are gray cast iron, aluminium alloy or steel.
After the invention, have the following advantages compared with the prior art and effect:First, pouring technology design is more Rationally, compared with existing rising head is from flywheel rim cast, because flywheel arm is thinner than flywheel rim, pour into a mould remaining remaining more preferable clear Reason;Compared with flywheel rim surface, after casting complete, lightening hole can not have to processing.Second, product yield is high, have rising head with Flywheel casting method without rising head is compared, and product yield brings up to 91.7% from 78.3%.Third, production cost is low, have rising head with Flywheel casting method without rising head is compared, cost-effective 27 yuan of every flywheel.Fourth, percent defective is low, new casting mold and casting method Application, reduce cinder hole, lift the casting flaw such as case and scab, improve product quality.
Brief description of the drawings
Fig. 1 is the structural representation of the invention.
Fig. 2 is the flywheel schematic diagram of the invention.
Wherein 1 flywheel die cavity, 2 ingates, 3 filter net sheets, 4 sprues, 5 air flues, sand mold on 6 casting molds, 7 cylinder loam cores, 8 Sand mold under casting mold, 11 wheel rims, 12 spokes, 13 wheel hubs, 14 lightening holes.
Embodiment
It is the riser-free casting method tool of a kind of the flywheel casting mold and the flywheel casting mold of the invention shown in Fig. 1 and Fig. 2 Body embodiment, flywheel of the present invention are made up of wheel rim 11, spoke 12, wheel hub 13 and lightening hole 14, the material of the flywheel Matter is gray cast iron.
Flywheel casting mold described in the invention includes on the casting mold of upper and lower overlapping placement sand mold 8, institute under sand mold 6 and casting mold It is correspondingly arranged on flywheel die cavity 1 on the casting mold stated under sand mold 6 and casting mold on sand mold 8, the center of flywheel die cavity 1 of sand mold 8 under casting mold Provided with cylinder loam core 7, the top of cylinder loam core 7 is close on the flywheel die cavity 1 of sand mold 6 on casting mold, sand mold 6 on described casting mold The air flue 5 being provided with directly over cylinder loam core 7, sand mold 6 is provided with sprue 4 on described casting mold, under casting mold on sand mold 8 Provided with ingate 2, sprue 4 is connected with ingate 2, and ingate 2 connects with flywheel die cavity 1, and the described bottom of sprue 4 is set There is filter net sheet 3.Described sprue 4 is arranged on the surface of the lightening hole 14 of flywheel arm 12, and molten iron passes through sprue 4 and interior Running channel 2 enters flywheel die cavity 1, because spoke 12 is thinner than wheel rim 11, is easy to remove remnants, and lightening hole 14 belongs to non-processing Face, it is possible to reduce processing technology.In order to prevent shrinkage, accelerate molten iron flow, the top of the sprue 4 is tubaeform, middle part It is taper for cylinder, bottom.In order to prevent filter net sheet 3 floats in casting process from influenceing filter effect, the screen pack Piece 3 is made for fire clay, and profile is coincide with the bottom of sprue 4.For the ease of molding, the cylinder loam core 7 uses cold core sand system Make, with 1:10 demoulding taper, at the same it is also consistent with the centre bore taper of flywheel.
The riser-free casting method of flywheel casting mold, comprises the following steps described in the invention:
Step 1 rounding post loam core 7:Make cylinder loam core 7 using cold core mechanism;
Sand mold 8 under step 2 casting mold processed:Sand mold 8 under casting mold is made using moulding machine;
Step 3 falls into cylinder loam core 7 and filter net sheet 3:Cylinder loam core 7 is fallen into sand mold 8 under the casting mold made And filter net sheet 3 is put into sand mold 8 under the casting mold of the bottom position of sprue 4;
Sand mold 6 on step 4 casting mold processed:Sand mold 6 on casting mold is made using moulding machine;
Step 5 mould assembling and fastening:Sand mold 6 merges with sand mold under casting mold 8 on casting mold, and is fastened with box fastener;
Step 6 is poured into a mould:It is that 1380 DEG C~1450 DEG C molten iron inject flywheel die cavity 1 from sprue 4 and ingate 2 by temperature, The duration of pouring is 13 seconds~17 seconds;
Step 7 is unpacked and cleaning casting:Shake-out Time is 40 points~45 points, opens sandbox and takes out Wheel casting, clears up Cast gate and burr.
It is described above, simply one embodiment of the invention, not the invention is made any formal Limitation, on the basis of the technical scheme of the invention is not departed from, made simple modification, equivalent variations or modification, falls Enter the protection domain of the invention.

Claims (5)

1. a kind of flywheel casting mold, including sand mold under sand mold and casting mold on the casting mold of overlapping placement up and down, it is characterized in that:Described casting It is correspondingly arranged on flywheel die cavity in type under sand mold and casting mold on sand mold, the flywheel die cavity center of sand mold is provided with cylinder mud under casting mold Core, it is close on the flywheel die cavity of sand mold on casting mold at the top of cylinder loam core, sand mold, which is provided with, on described casting mold is located at cylinder Air flue directly over loam core, sand mold is provided with sprue on described casting mold, and sand mold is provided with ingate under casting mold, sprue with Ingate connects, and ingate connects with flywheel die cavity, and described sprue bottom is provided with filter net sheet, and described sprue is set Put in the surface of flywheel arm lightening hole, the top of the sprue be tubaeform, middle part be cylinder, bottom be taper.
2. flywheel casting mold according to claim 1, it is characterized in that:The filter net sheet is that fire clay makes, profile with it is straight Running channel bottom coincide.
3. flywheel casting mold according to claim 1, it is characterized in that:The cylinder loam core is made using cold core sand, with 1: 10 demoulding taper.
4. according to the riser-free casting method of any one of claims 1 to 3 flywheel casting mold, it is characterized in that:Including following step Suddenly:
Step 1 rounding post loam core:Make cylinder loam core using cold core mechanism;
Sand mold under step 2 casting mold processed:Sand mold under casting mold is made using moulding machine;
Step 3 falls into cylinder loam core and filter net sheet:Cylinder loam core is fallen into sand mold under the casting mold made and is directly being poured Under the casting mold of road bottom position filter net sheet is put into sand mold;
Sand mold on step 4 casting mold processed:Sand mold on casting mold is made using moulding machine;
Step 5 mould assembling and fastening:Sand mold merges with sand mold under casting mold on casting mold, and is fastened with box fastener;
Step 6 is poured into a mould:It is that 1380 DEG C~1450 DEG C molten iron inject flywheel die cavity, the duration of pouring from sprue and ingate by temperature For 13 seconds~17 seconds;
Step 7 is unpacked and cleaning casting:Shake-out Time is 40 points~45 points, opens sandbox and takes out Wheel casting, clears up cast gate And burr.
5. the riser-free casting method of flywheel casting mold according to claim 4, it is characterized in that:The flywheel material is cast for ash Iron, aluminium alloy or steel.
CN201510879905.5A 2015-12-06 2015-12-06 The riser-free casting method of flywheel casting mold and the flywheel casting mold Active CN105364020B (en)

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CN105665651A (en) * 2016-04-11 2016-06-15 杨朝平 Flywheel casting mold
CN106040983B (en) * 2016-07-20 2018-11-20 大连金河铸造有限公司 The improvement technique and its running gate system of belt pulley casting
CN106493306B (en) * 2016-11-08 2018-05-11 广西玉柴机器股份有限公司 The casting method of bell housing with gear chamber cover
CN110976765A (en) * 2019-12-25 2020-04-10 徐州万佳机电设备制造有限公司 Iron casting method with long service life

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JPS5884639A (en) * 1981-11-12 1983-05-20 Masami Michihiro Mold for wheel
CN101445853B (en) * 2007-11-28 2011-07-20 上海华新合金有限公司 Method for casting elevator as-cast ball iron towing pulley
CN101585078A (en) * 2008-05-23 2009-11-25 上海华新合金有限公司 Method for casting as-cast high-tenacity cast iron bearing cover of locomotive
CN101530893A (en) * 2009-04-29 2009-09-16 淮阴工学院 Gating system for light alloy castings of wheels
CN203843115U (en) * 2014-05-14 2014-09-24 佛山市南海中南铝车轮制造有限公司 Gravity casting mould of aluminum alloy motorcycle hub
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