CN109834216A - A kind of casting process of draft gear housing - Google Patents
A kind of casting process of draft gear housing Download PDFInfo
- Publication number
- CN109834216A CN109834216A CN201811302381.3A CN201811302381A CN109834216A CN 109834216 A CN109834216 A CN 109834216A CN 201811302381 A CN201811302381 A CN 201811302381A CN 109834216 A CN109834216 A CN 109834216A
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- Prior art keywords
- casting
- shell
- formwork
- inner core
- gear housing
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- 238000005266 casting Methods 0.000 title claims abstract description 58
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 47
- 239000010959 steel Substances 0.000 claims abstract description 47
- 238000009415 formwork Methods 0.000 claims abstract description 43
- 239000012530 fluid Substances 0.000 claims abstract description 30
- 238000001802 infusion Methods 0.000 claims abstract description 30
- 239000004576 sand Substances 0.000 claims abstract description 28
- 229910052845 zircon Inorganic materials 0.000 claims abstract description 12
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000004519 manufacturing process Methods 0.000 claims abstract description 7
- 238000005520 cutting process Methods 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims description 10
- 238000003860 storage Methods 0.000 claims description 9
- 239000000284 extract Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 12
- 238000012797 qualification Methods 0.000 abstract description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 12
- 230000003014 reinforcing effect Effects 0.000 description 8
- 229910052742 iron Inorganic materials 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000000047 product Substances 0.000 description 4
- 238000007711 solidification Methods 0.000 description 4
- 230000008023 solidification Effects 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 239000013589 supplement Substances 0.000 description 3
- 210000001519 tissue Anatomy 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 238000002224 dissection Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
Landscapes
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention discloses a kind of casting process of draft gear housing, include the following steps: (a) using the casting die of zircon sand precoated sand production draft gear housing, casting die includes formwork and inner core, formwork has type chamber, it is respectively equipped with casting pipeline and overflow pipe in type chamber two sides, casting pipeline and overflow pipe are connected with type chamber, are equipped with fluid infusion in type top of chamber, fluid infusion is connected with type chamber, and inner core is equipped with vertical groove；(b) inner core is placed in formwork fixed；(c) molten steel is poured into the casting gate of casting pipeline, until molten steel is full of die cavity and is overfilled with pipeline and fluid infusion；(d) it to molten steel cooled and solidified, opens steel plate and removes formwork and inner core, obtain initial buffer cabinet；(e) it after cutting off the long position on initial buffer cabinet and polishes, obtains draft gear housing.The technique is conducive to avoid the generation of bubble to the improvement of casting die, can be obviously improved the qualification rate of product.
Description
Technical field
The present invention relates to a kind of techniques, and in particular to a kind of technique for draft gear housing of casting.
Background technique
Buffer is the important component of lorry coupler buffering device, and effect is to mitigate to generate in train travelling process
Longitudinal impulse, absorb impact energy, improve lorry traveling comfort, avoid vehicle and cargo from being damaged.It is existing dry
Draft gear such as MT-2 type buffer, is made of cabinet, friction system and spring system, and wherein cabinet is cuboid,
The reinforcing rib of protrusion is equipped on two opposite inner sidewalls of cabinet along short transverse, for enhancing the mechanical strength of cabinet itself, is delayed
Rushing device cabinet is carrying friction system and spring system and the important component for absorbing impact power.Application for a patent for invention CN
104525870 A disclose a kind of manufacturing method of draft gear housing, and production formwork and inner core, inner core are placed in formwork simultaneously first
There are type chambers between formwork, and in formwork two sides, there are dead heads, and molten steel is poured into from side dead head, and type is intracavitary to be full of molten iron
Overflowed afterwards from other side dead head, form initial buffer cabinet after molten steel is cooling, then remove mold and by dead head, pour and emit
The molten steel solidified in pipeline cuts away, through the post-processing predetermined process such as cabinet polishing obtains draft gear housing again.This technique is adopted
The mode of case is filled out to accelerate radiating rate with iron sand, keeps the interior tissue of draft gear housing finer and close, it is bigger to absorb impact power.But
It is that there are gaps between iron sand, keeps heat conduction velocity partially slow, it is not fine for being consistent with heat transfer rate required for molten steel solidification,
Also there is certain top clearance between iron sand simultaneously, the fixed effect of formwork is not very ideal.Meanwhile to cabinet
It is found in transverse cuts dissection, on wall box, especially on the reinforcing rib of protrusion, will appear stomata once in a while, stomata is
Caused by carrying air when casting in molten steel and forming bubble and fail discharge, the presence of this bubble destroys interior on the whole
The compactness of portion's tissue, can be such that the shock resistance of cabinet greatly declines, and such cabinet is also made to become substandard product.How
It matches heat transfer more with the rate of molten steel solidification, preferably formwork is fastened, while reducing the probability of occurrence of bubble, mentioning
The casting qualification rate for rising cabinet, is buffer tank body casting technique technical problem urgently to be solved.
Summary of the invention
The object of the present invention is to provide a kind of casting process of draft gear housing, which uses front and back steel plate and bolt pair
The formwork of casting die is fixed, and thermally conductive and fastening performance is good, is conducive to avoid the generation of bubble to the improvement of casting die,
The qualification rate of product can be obviously improved.
To achieve the goals above, the present invention adopts the following technical scheme that:
A kind of casting process of draft gear housing, includes the following steps:
(a) using the casting die of zircon sand precoated sand production draft gear housing, the casting die includes formwork and inner core, described
Formwork has type chamber, is respectively equipped with casting pipeline and overflow pipe in type chamber two sides, pipeline and the overflow pipe of casting with type chamber
It is connected, is equipped with fluid infusion in type top of chamber, fluid infusion is connected with type chamber, and the inner core is equipped with vertical groove；
(b) inner core is placed in formwork, die cavity is formed between inner core and the type chamber of formwork, with steel plate before formwork
Two sides clamp formwork afterwards, and are fastened the steel plate of front and rear sides with screw；
(c) molten steel is poured into the casting gate of the casting pipeline, until molten steel is full of the die cavity and is full of the discharger
Road and fluid infusion；
(d) it to molten steel cooled and solidified, opens the steel plate and removes the formwork and inner core, obtain initial buffer cabinet；
(e) it after cutting off the long position on initial buffer cabinet and polishes, obtains draft gear housing.
Preferably, the casting gate of the casting pipeline is inverted prismatic table shape, and casting lower end of duct expands to form liquid storage chamber,
The overflow pipe lower end expands to form spill cavity, and the inner cavity of the fluid infusion is inverted truncated cone-shaped, and fluid infusion is located at
The surface of the vertical groove of the inner core.
Preferably, the formwork is composed of first half-shell and the second half-shell, the casting pipeline, liquid storage chamber, spilling
Chamber, overflow pipe are symmetricly set in first half-shell and the second half-shell；The vertical groove has four, and two of them are located at described
On the front side wall of inner core, two other is located on the rear wall of the inner core, and there are four the fluid infusions, is located at four institutes
The surface for stating vertical groove, is equipped with groove in the outer edge of first half-shell, is equipped with convex edge in the outer edge of the second half-shell, described
Convex edge engages in the groove.
Preferably, the casting gate inner cavity is inverted positive five terrace with edge or positive six prismatic table shape.
Preferably, the formwork and inner core are made of zircon sand precoated sand.
It is further preferred that the first half-shell and the second half-shell make as follows:
(a) half-shell mold is made respectively according to the shape of first half-shell and the second half-shell, half-shell mold is by cope plate and lower template
It is composed, the die cavity formed between cope plate and lower template is corresponding with first half-shell or the second half-shell, stays in lower template
There is the mould cylinder for being used to form the fluid infusion, mould cylinder internal plug has the mold core for being used to form fluid infusion inner cavity；
(b) using core shooter by zircon sand precoated sand inject in the die cavity that the cope plate and lower template are formed and the mould cylinder with
In the cavity formed between mold core, shape zircon sand precoated sand；
(c) cope plate and lower template are dismantled and extracts the mold core out, obtains the first half-shell or the second half-shell.
In technical solution of the present invention, it is close in front and rear sides with formwork using steel plate and passes through bolt for two blocks of front and back steel
Plate is connected and fixed, and relatively previous iron sand is filled out for the mode of case, and heat-transfer rate slightly improves, and the heat-transfer rate is covered with zircon sand
The mold of film sand production provides the rate of temperature fall of a matters for molten iron condensation, is conducive to molten steel and is condensed into dense structure, tool
There is the metallographic structure of good anti-impact force.Further, mould therefor also additionally aids the generation for reducing steel underwater bubble, is promoted
Castability.Specifically, cast pipeline sprue gate inner cavity in caused prismatic table shape, i.e., its cross section is polygon, especially
It is regular pentagon or regular hexagon, when casting molten steel, molten steel is not easy to form whirlpool in casting gate, to be not easy to involve in sky
Gas reduces the generation of bubble from source.Meanwhile fluid infusion is set at top and is located at the top of the vertical groove of inner core, because
The reinforcing rib of cabinet is used to form for vertical groove, so fluid infusion can directly supplement reinforcing rib by cooling solidification and shrink when institute
Need molten steel, and inverted truncated cone-shaped is that upper port is big, lower port is small, and larger pressure can be generated in this way at lower port, it can be with
Accelerate the speed that molten steel supplements in process of setting into die cavity, not only contributes to the densification of cabinet tissue, can also press simultaneously
Make the evolution of bubble in die cavity.In addition, liquid storage chamber and spill cavity are directly connected to die cavity, it helps steel in rapid supplementary model
Lacking for water solidification shrinkage is remaining, guarantees that the cabinet formed in die cavity enriches, is fine and close.Using mold of the invention, cabinet wall, reinforcement
There is a possibility that bubble and are substantially reduced in the positions such as muscle, and product qualification rate has a distinct increment.
Detailed description of the invention
Fig. 1 is first half-shell structural schematic diagram of the present invention；
Fig. 2 is the second half-shell structure schematic diagram of the invention；
Fig. 3 is model core arrangement schematic diagram of the present invention；
Fig. 4 is cope plate structural schematic diagram used in the present invention；
Fig. 5 is lower template structural schematic diagram used in the present invention.
Specific embodiment
With reference to the accompanying drawing, by preferred embodiment, the present invention will be further described:
As shown in Figure 1, the casting technique of this draft gear housing includes the following steps:
(a) casting die of draft gear housing is made using zircon sand precoated sand as material first, casting die includes formwork and inner core
2, formwork has type chamber 101, is respectively equipped with casting pipeline 102 and overflow pipe 103 in 101 two sides of type chamber, 102 He of pipeline of casting
Overflow pipe 103 is connected with type chamber 101, and fluid infusion 3, the lower mouth 350 and type chamber of fluid infusion 3 are equipped at the top of type chamber 101
101 are connected, and inner core 2 is equipped with vertical groove 201, and vertical groove 201, which is full of after molten steel in die cavity, goes out cabinet for moulding
The reinforcing rib of side wall；
(b) inner core 2 is placed in formwork, forms die cavity between the type chamber 101 of inner core 2 and formwork, with two blocks of steel plates in formwork
Front and rear sides clamp formwork, and are fastened the steel plate of front and rear sides with screw；
(c) molten steel is poured into the casting gate 104 of casting pipeline 102, until molten steel is full of die cavity and is overfilled with 103 He of pipeline
Fluid infusion 3；
(d) to molten steel cooled and solidified, two blocks of steel plates is opened and break formwork and inner core into pieces, obtain initial buffer cabinet；
(e) it after cutting off the long position on initial buffer cabinet and polishes, obtains draft gear housing.
In a preferred embodiment of the present invention, the inner cavity of the casting gate 104 for pipeline 102 of casting is inverted prismatic table shape,
It is preferred that positive five terrace with edge or positive six terrace with edge, molten steel intracavitary blocking by rib in prismatic table shape, it is not easy to rotate to form whirlpool
Whirlpool, to be not easy to bring into air to form bubble.The lower end of casting pipeline 102 is connected with liquid storage chamber 105, liquid storage chamber 105
It is connected near the half height of type chamber 101 and with type chamber 101, steel after being full of molten steel in die cavity, in liquid storage chamber 105
For supplementing, caused volume reduces water after molten steel shrinkage in die cavity, to guarantee the full size of cabinet.In the another of type chamber 101
The formwork of side be equipped with spill cavity 106, spill cavity 106 also be located at the mid-height of type chamber 101 nearby and with 101 phase of type chamber
Connection, spill cavity 106 are connected with overflow pipe 103 upwards.The inner cavity of fluid infusion 3 is inverted truncated cone-shaped, lower mouth and mould
Chamber is connected and faces the vertical groove 201 of inner core 2, after being full of molten steel in die cavity 4, also has molten steel in fluid infusion 3,
And it supplements after the molten steel shrinkage in die cavity into die cavity 4, because the upper opening of fluid infusion is greater than under shed, is opened under
Larger pressure can be generated at mouthful, is conducive to promote the speed that the molten steel in fluid infusion is supplemented into die cavity in this way, simultaneously also by
Applying pressure makes the bubble being located on one line of reinforcing rib evolution.Because the thickness of reinforcing rib is greater than other portions of cabinet on cabinet
Position, was more prone to produce bubble at this position in the past, above-mentioned technique of the invention can be substantially reduced the production of reinforcing rib position bubble
It is raw, promote the qualification rate and quality of product.
In a preferred embodiment of the present invention, for MT-2 draft gear housing the characteristics of, the front-rear side walls of inner core
Four vertical grooves 201 of upper setting, two are located at front side wall, and two other is located on rear wall.Corresponding fluid infusion 3 also has four
It is a, it is separately positioned on the top of four vertical grooves 201.
Formwork is divided into first half-shell 110 and the second half-shell 111 by a preferred embodiment of the present invention, and makes to cast
Pipeline 102, casting gate 104, liquid storage chamber 105, spill cavity 106 and overflow pipe 103 are uniformly and symmetrically distributed in 110 and of first half-shell
In second half-shell 111, and groove is set at 110 edge of first half-shell, convex edge 113 is arranged in the second half-shell edge, by convex edge 113
First half-shell 110 and the second half-shell 111 are combined into a complete formwork together with being buckled in groove, it is this by formwork one
It is divided into two mode, facilitates the combination of inner core and formwork, improve packaging efficiency.It is of course also possible to formwork is not divided into
Two half-shells are stated, but bottom cover is set in formwork bottom, bottom cover is opened and inner core is packed into and covers bottom cover sealing.
In a preferred embodiment of the present invention, first half-shell 110 and the second half-shell are made by the following method
111:
(a) half-shell mold is made according to the shape of first half-shell 110 and the second half-shell 111 respectively, half-shell mold is by cope plate 150
It is composed with lower template 151, the die cavity formed between cope plate 150 and lower template 151 and first half-shell 110 or the second half-shell
111 is corresponding, and there are the mould cylinder 153 for being used to form the fluid infusion 3 in lower template 151,153 internal plug of mould cylinder is used to form
The mold core of 3 inner cavity of fluid infusion；
It (b) will be in zircon sand precoated sand injects the cope plate 150 and lower template 151 is formed die cavity and mould cylinder using core shooter
In the cavity formed between 153 and mold core, shape zircon sand precoated sand；
(c) cope plate 151 and lower template 152 are dismantled and extracts the mold core out, obtains the first half-shell or the second half-shell.
Using die casting draft gear housing of the invention, by disqualification rate caused by the existing because of bubble of draft gear housing
50% or more is reduced, the anti-impact force of cabinet also has corresponding promotion.
Above-described embodiment is the explanation to present inventive concept and realization, is not intended to limit it, in present inventive concept
Under, without the technical solution that substantially converts still in protection scope.
Claims (5)
1. a kind of casting process of draft gear housing, it is characterised in that include the following steps:
(a) using the casting die of zircon sand precoated sand production draft gear housing, the casting die includes formwork and inner core, described
Formwork has type chamber, is respectively equipped with casting pipeline and overflow pipe in type chamber two sides, pipeline and the overflow pipe of casting with type chamber
It is connected, is equipped with fluid infusion in type top of chamber, fluid infusion is connected with type chamber, and the inner core is equipped with vertical groove；
(b) inner core is placed in formwork, die cavity is formed between inner core and the type chamber of formwork, with steel plate before formwork
Two sides clamp formwork afterwards, and are fastened the steel plate of front and rear sides with screw；
(c) molten steel is poured into the casting gate of the casting pipeline, until molten steel is full of the die cavity and is full of the discharger
Road and fluid infusion；
(d) it to molten steel cooled and solidified, opens the steel plate and removes the formwork and inner core, obtain initial buffer cabinet；
(e) it after cutting off the long position on initial buffer cabinet and polishes, obtains draft gear housing.
2. the casting process of draft gear housing as described in claim 1, which is characterized in that it is described casting pipeline casting gate be
Inverted prismatic table shape, casting lower end of duct expand to form liquid storage chamber, and the overflow pipe lower end expands to form spill cavity, the benefit
The inner cavity of liquid mouth is inverted truncated cone-shaped, and fluid infusion is located at the surface of the vertical groove of the inner core.
3. the casting process of draft gear housing as claimed in claim 2, which is characterized in that the formwork is by first half-shell and
Two half-shells are composed, and the casting pipeline, liquid storage chamber, spill cavity, overflow pipe are symmetricly set on first half-shell and the second half
On shell；The vertical groove has four, and two of them are located on the front side wall of the inner core, and two other is located at the inner core
On rear wall, there are four the fluid infusions, the surface of four vertical grooves is located at, in the outer edge of first half-shell
Equipped with groove, it is equipped with convex edge in the outer edge of the second half-shell, the convex edge engaging is in the groove.
4. the casting process of draft gear housing as claimed in claim 2, which is characterized in that the casting gate inner cavity is inverted
Positive five terrace with edge or positive six prismatic table shape.
5. the casting process of draft gear housing as described in claim 3 or 4, which is characterized in that the first half-shell and second
Half-shell makes as follows:
(a) half-shell mold is made respectively according to the shape of first half-shell and the second half-shell, half-shell mold is by cope plate and lower template
It is composed, the die cavity formed between cope plate and lower template is corresponding with first half-shell or the second half-shell, stays in lower template
There is the mould cylinder for being used to form the fluid infusion, mould cylinder internal plug has the mold core for being used to form fluid infusion inner cavity；
(b) using core shooter by zircon sand precoated sand inject in the die cavity that the cope plate and lower template are formed and the mould cylinder with
In the cavity formed between mold core, shape zircon sand precoated sand；
(c) cope plate and lower template are dismantled and extracts the mold core out, obtains the first half-shell or the second half-shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811302381.3A CN109834216A (en) | 2018-11-02 | 2018-11-02 | A kind of casting process of draft gear housing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811302381.3A CN109834216A (en) | 2018-11-02 | 2018-11-02 | A kind of casting process of draft gear housing |
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| Publication Number | Publication Date |
|---|---|
| CN109834216A true CN109834216A (en) | 2019-06-04 |
Family
ID=66883098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811302381.3A Pending CN109834216A (en) | 2018-11-02 | 2018-11-02 | A kind of casting process of draft gear housing |
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| Country | Link |
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| CN (1) | CN109834216A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112893773A (en) * | 2021-02-23 | 2021-06-04 | 天长市兴宇铸造有限公司 | Module wax part structure for upper and lower shell castings in coupler and draft gear and tree assembling process thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1015782B (en) * | 1989-02-28 | 1992-03-11 | 丹尼斯工业辛迪加公司 | Apparatus for weighting and lateral support of box-less sand mold parts with horizontal parting line |
| CN103182479A (en) * | 2011-12-30 | 2013-07-03 | 上海爱仕达汽车零部件有限公司 | Casting mold for vacuum pump box body |
| CN103302254A (en) * | 2013-06-26 | 2013-09-18 | 安徽祝成动力机械有限公司 | Steel mould sand coating casting method |
| CN104525870A (en) * | 2014-12-11 | 2015-04-22 | 牡丹江金缘钩缓制造有限责任公司 | Manufacturing method of buffer box body |
| CN105382241A (en) * | 2015-12-30 | 2016-03-09 | 上海爱仕达汽车零部件有限公司 | Casting process of oil separator box body |
-
2018
- 2018-11-02 CN CN201811302381.3A patent/CN109834216A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1015782B (en) * | 1989-02-28 | 1992-03-11 | 丹尼斯工业辛迪加公司 | Apparatus for weighting and lateral support of box-less sand mold parts with horizontal parting line |
| CN103182479A (en) * | 2011-12-30 | 2013-07-03 | 上海爱仕达汽车零部件有限公司 | Casting mold for vacuum pump box body |
| CN103302254A (en) * | 2013-06-26 | 2013-09-18 | 安徽祝成动力机械有限公司 | Steel mould sand coating casting method |
| CN104525870A (en) * | 2014-12-11 | 2015-04-22 | 牡丹江金缘钩缓制造有限责任公司 | Manufacturing method of buffer box body |
| CN105382241A (en) * | 2015-12-30 | 2016-03-09 | 上海爱仕达汽车零部件有限公司 | Casting process of oil separator box body |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112893773A (en) * | 2021-02-23 | 2021-06-04 | 天长市兴宇铸造有限公司 | Module wax part structure for upper and lower shell castings in coupler and draft gear and tree assembling process thereof |
| CN112893773B (en) * | 2021-02-23 | 2024-01-26 | 天长市兴宇铸造有限公司 | Module wax component structure for upper and lower shell castings in hook buffer device and tree assembling process thereof |
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Application publication date: 20190604 |
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