CN104493086A - Integral forming process of DZ1 type side frame guide frame of wagon - Google Patents
Integral forming process of DZ1 type side frame guide frame of wagon Download PDFInfo
- Publication number
- CN104493086A CN104493086A CN201410813271.9A CN201410813271A CN104493086A CN 104493086 A CN104493086 A CN 104493086A CN 201410813271 A CN201410813271 A CN 201410813271A CN 104493086 A CN104493086 A CN 104493086A
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- core
- sand
- curved surface
- side frame
- type side
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Machines For Laying And Maintaining Railways (AREA)
Abstract
The invention discloses an integral forming process of a DZ1 type side frame guide frame of a wagon, namely a method for forming the curved surface shape of the DZ1 type side frame guide frame by using an integral sand core, and therefore, the pattern draft, the trimming or the fash due to the fact that the curved surface of the DZ1 type side frame guide frame is formed step by step by adopting the sand core and the shape currently can be avoided. According to the invention, in the event of designing the structure of a core box, a curved surface movable block is adopted at the premise of ensuring the quality of the sand core and not increasing the operation difficulty; therefore, when the sand core is put on the top surface correspondingly close to a guide frame, the sand filling area is gradually enlarged till the curved surface of the guide frame is completely covered by the corresponding sand core forming part, so that the purpose of integrally forming the curved surface of the guide frame is realized; the DZ1 type side frame guide frame is integrally formed by adopting the integral sand core; the appearance quality and the internal quality of casts are increased; and the cleaning working strength of welding, repairing, polishing and the like caused by forming step by step is lightened.
Description
Technical field
The invention belongs to railway freight-car DZ1 type side frame Foundry Production technical field, particularly a kind of for the drawing strickle guide integral forming technique in railway freight-car DZ1 type side frame casting process.
Background technology
Railway freight-car DZ1 type side frame is the key components and parts of railway freight-car running part, and as illustrated in fig. 1 and 2, in the production of China DZ1 type side frame foundry goods 1, foundry goods drawing strickle guide forming method adopts the core 7 of uniform thickness shaping with external form 8 points of two parts, as seen in figures 3-6.
As shown in Figure 7, adopting the core of this kind of uniform thickness and external form to divide two parts shaping drawing strickle guide, mainly there is following harm in the DZ1 type side frame produced:
One is, core thickness is less than the corresponding width of drawing strickle guide, and the uppity gap that core edge breakage can exist at core boundary produces overlap or fash 6; And the overlap that foundry goods exists is in casting solidification forming process, overlap root extremely easily produces micro-crack 4 again, and this overlap and crackle need to carry out repair welding polishing in follow-up scale removal process, increases cleaning work amount, returns product and bring hidden danger of quality.
Two are, when core and external form divide two parts shaping drawing strickle guide, the one-sided height of shape molding part reaches more than 50 millimeters, according to the technique of 1 degree of pattern draft, namely the pattern draft 5 of 2 millimeters is produced, for making end face on drawing strickle guide smooth, polishing workload need be increased, otherwise on drawing strickle guide, end face other faces except machined surface there will be the unevenness of 2 millimeters.
More than endanger, embody in railway operation process, bring certain economic loss to railway transportation cause.
Summary of the invention
The object of the invention is to: for above-mentioned Problems existing, there is provided a kind of and adopt integral sand core global formation side frame guide, thus improve the visual quality of casting and inherent quality, alleviate the railway freight-car DZ1 type side frame guide integral forming technique of the shaping cleaning work intensity such as repair welding, polishing brought of branch.
Technical scheme of the present invention is achieved in that a kind of railway freight-car DZ1 type side frame guide integral forming technique, comprises the steps:
A, back-up sand, put back-up sand in the drawing strickle guide one-piece core box put in place to loose piece, the height of back-up sand suitably exceeds the face of strike-ofing, and after tamping or ram-jolt, scrape off unnecessary residual sand, so far molding sand is consistent with core box body apical side height;
It is characterized in that: it also comprises following steps,
B, sclerosis, after back-up sand consolidation, integral sand core back-up sand area progressively amplifies position, and namely core top needs all to cover DZ1 type side frame guide curved surface and the shape at core top and side frame guide curve form match, and then hardens to the intensity of core sand;
C, upset, molding, after fitting with core supporting plate and core box body end face, core supporting plate and core box body overturn in the stationary state; Then molding, core box body is raised, and leaves curved surface loose piece and encases core;
D, get curved surface loose piece, slide along core supporting plate face, take out curved surface loose piece;
E, get core, after getting curved surface loose piece, need the drawing strickle guide integral sand core made namely to be held by core supporting plate, and then carry out swabbing, cleaning work;
The curved portion shape of the drawing strickle guide integral sand core global formation side frame guide that F, employing above-mentioned steps make.
Railway freight-car DZ1 type side frame guide integral forming technique of the present invention, its in step, back-up sand area progressively amplifies position as position, dead angle, strengthens tamping, and ensures the corresponding position degree of packing of core top and side frame guide curved surface.
Railway freight-car DZ1 type side frame guide integral forming technique of the present invention, when curved surface loose piece described in it makes core correspondence close on end face on drawing strickle guide, progressively amplifies back-up sand area, all covers drawing strickle guide curved surface to corresponding core moulding section.
The present invention adopts integral sand core shaping DZ1 type side frame guide curve form, by when core box structural design, in guarantee core quality and under not increasing operation easier situation, adopt curved sides loose piece, when making core correspondence close on end face on drawing strickle guide, progressively amplify back-up sand area, drawing strickle guide curved surface is all covered to corresponding core moulding section, realize the object of global formation drawing strickle guide curved surface, thus effectively prevent the pattern draft and the problem such as overlap or fash that adopt core and external form branch shaping DZ1 type side frame guide curved surface to bring at present, improve the visual quality of casting and inherent quality, alleviate the shaping repair welding brought of branch, polishing waits cleaning work intensity.
The invention has the beneficial effects as follows:
1, the shaping drawing strickle guide forming method of the core of diversification and external form branch is integrated into the drawing strickle guide integral core forming method of blocking, adopt drawing strickle guide integral core technique, core surface continuous and derivable, curved surface connects complete, smooth without seam by the side frame guide using integral core to produce, effectively can avoid shaping casting overlap, the fash brought of core and external form branch.
2, be conducive to technological requirement operation, place the Modeling Materials such as chill, arbor, chromite sand in technological requirement position exactly.
3, frock is easy to maintenance, for partial alteration or the technique adjustment of product, has easily come by carrying out adjustment to loose piece, comparatively flexible and strong adaptability.
4, reduce the overlap that brings of mismatch in core or fash to greatest extent, also reduce cleaning work simultaneously.
5, improve DZ1 type side frame guide dimensional accuracy, ensure the performances such as product working strength further.
Accompanying drawing explanation
Fig. 1 and Fig. 2 is railway freight-car DZ1 type side frame product schematic diagram.
Fig. 3 and Fig. 4 is that traditional drawing strickle guide moulding process adopts core and external form branch molded design schematic diagram.
Fig. 5 and Fig. 6 is the core schematic diagram of traditional drawing strickle guide manufacture technics.
Fig. 7 is the schematic diagram adopting traditional handicraft foundry goods to produce micro-crack, pattern draft, overlap.
Fig. 8 and Fig. 9 is drawing strickle guide moulding process design drawing of the present invention.
Figure 10 and Figure 11 is the schematic diagram of the drawing strickle guide integral core that present invention process produces.
Figure 12 is the flow chart of manufacturing process of the present invention.
Reference numeral: 1 is DZ1 type side frame foundry goods, 2 is drawing strickle guide integral sand core, 3 is the external form of integral core of the present invention, 4 micro-cracks brought for traditional drawing strickle guide moulding process generation overlap or fash, 5 is pattern draft, and 6 is overlap or fash, 7 is the core that traditional casting drawing strickle guide forming method adopts, 8 is the external form that traditional casting drawing strickle guide forming method adopts, and 9 is core box body, and 10 is curved surface loose piece.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
As illustrated in figs. 8-12, a kind of railway freight-car DZ1 type side frame guide integral forming technique, comprises the steps:
A, back-up sand, back-up sand in the drawing strickle guide one-piece core box put in place is put to loose piece, back-up sand area progressively amplifies position as position, dead angle, reinforcement is tamped, ensure the corresponding position degree of packing of core top and side frame guide curved surface, the height of back-up sand suitably exceeds the face of strike-ofing, after tamping or ram-jolt, scrape off unnecessary residual sand, so far molding sand is consistent with core box body 9 apical side height; Wherein, described loose piece is curved surface loose piece 10, when described curved surface loose piece 10 makes core correspondence close on end face on drawing strickle guide, progressively amplifies back-up sand area, all covers drawing strickle guide curved surface to corresponding core moulding section;
B, sclerosis, after back-up sand consolidation, integral sand core back-up sand area progressively amplifies position, and namely core top needs all to cover DZ1 type side frame guide curved surface and the shape at core top and side frame guide curve form match, and then hardens to the intensity of core sand;
C, upset, molding, after fitting with core supporting plate and core box body 9 end face, core supporting plate and core box body 9 overturn in the stationary state; Then molding, core box body 9 is raised, and leaves curved surface loose piece 10 and encases core;
D, get curved surface loose piece 10, slide along core supporting plate face, take out curved surface loose piece 10;
E, get core, after getting curved surface loose piece 10, need the drawing strickle guide integral sand core 2 made namely to be held by core supporting plate, and then carry out swabbing, cleaning work;
The curved portion shape of the drawing strickle guide integral sand core 2 global formation side frame guide that F, employing above-mentioned steps make.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (3)
1. a railway freight-car DZ1 type side frame guide integral forming technique, comprises the steps:
A, back-up sand, put back-up sand in the drawing strickle guide one-piece core box put in place to loose piece, the height of back-up sand suitably exceeds the face of strike-ofing, and after tamping or ram-jolt, scrape off unnecessary residual sand, so far molding sand is consistent with core box body apical side height;
It is characterized in that: it also comprises following steps,
B, sclerosis, after back-up sand consolidation, integral sand core back-up sand area progressively amplifies position, and namely core top needs all to cover DZ1 type side frame guide curved surface and the shape at core top and side frame guide curve form match, and then hardens to the intensity of core sand;
C, upset, molding, after fitting with core supporting plate and core box body end face, core supporting plate and core box body overturn in the stationary state; Then molding, core box body is raised, and leaves curved surface loose piece and encases core;
D, get loose piece, described loose piece is curved surface loose piece, slides along core supporting plate face, takes out curved surface loose piece;
E, get core, after getting curved surface loose piece, need the drawing strickle guide integral sand core made namely to be held by core supporting plate, and then carry out swabbing, cleaning work;
The curved portion shape of the drawing strickle guide integral sand core global formation side frame guide that F, employing above-mentioned steps make.
2. railway freight-car DZ1 type side frame guide integral forming technique according to claim 1, it is characterized in that: in step, back-up sand area progressively amplifies position as position, dead angle, strengthens tamping, and ensures the corresponding position degree of packing of core top and side frame guide curved surface.
3. railway freight-car DZ1 type side frame guide integral forming technique according to claim 1 and 2, it is characterized in that: when described curved surface loose piece makes core correspondence close on end face on drawing strickle guide, progressively amplify back-up sand area, all cover drawing strickle guide curved surface to corresponding core moulding section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410813271.9A CN104493086A (en) | 2014-12-24 | 2014-12-24 | Integral forming process of DZ1 type side frame guide frame of wagon |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410813271.9A CN104493086A (en) | 2014-12-24 | 2014-12-24 | Integral forming process of DZ1 type side frame guide frame of wagon |
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| CN104493086A true CN104493086A (en) | 2015-04-08 |
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| CN201410813271.9A Pending CN104493086A (en) | 2014-12-24 | 2014-12-24 | Integral forming process of DZ1 type side frame guide frame of wagon |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105537529A (en) * | 2015-12-17 | 2016-05-04 | 南车眉山车辆有限公司 | Integrated sand core for integrated molding of railway wagon side frame guiding frame and stop key mounting surface as well as production method of integrated sand core |
| CN114101592A (en) * | 2021-11-08 | 2022-03-01 | 浙江信立智能设备有限公司 | Equipment integrating automatic core making, core connecting and core repairing method thereof |
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| US20010000571A1 (en) * | 1997-01-08 | 2001-05-03 | Bauer Anthony J. | Method of making sideframes for railway car trucks |
| US20030200894A1 (en) * | 2002-04-05 | 2003-10-30 | Berg Thomas R. | Spring seat for a railway truck sideframe and method of making the same |
| CN101053891A (en) * | 2007-05-25 | 2007-10-17 | 中国北车集团齐齐哈尔铁路车辆(集团)有限责任公司 | Bolster and side frame integral core producing method |
| CN101066554A (en) * | 2007-04-19 | 2007-11-07 | 中国南车集团眉山车辆厂 | Process of making integral swing bolster-side frame core of freight wagon |
| CN201283411Y (en) * | 2008-09-28 | 2009-08-05 | 齐齐哈尔轨道交通装备有限责任公司 | Goods train side frame integral core mold |
| CN201300189Y (en) * | 2008-11-14 | 2009-09-02 | 齐齐哈尔轨道交通装备有限责任公司 | Integrated core box of central frame and spring seat of rail wagon side frame and integrated core thereof |
| CN101733365A (en) * | 2008-11-06 | 2010-06-16 | 晋西铁路车辆有限责任公司 | Swing bolster and side frame integrated core preparation and core setting technology |
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2014
- 2014-12-24 CN CN201410813271.9A patent/CN104493086A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010000571A1 (en) * | 1997-01-08 | 2001-05-03 | Bauer Anthony J. | Method of making sideframes for railway car trucks |
| US20030200894A1 (en) * | 2002-04-05 | 2003-10-30 | Berg Thomas R. | Spring seat for a railway truck sideframe and method of making the same |
| CN101066554A (en) * | 2007-04-19 | 2007-11-07 | 中国南车集团眉山车辆厂 | Process of making integral swing bolster-side frame core of freight wagon |
| CN101053891A (en) * | 2007-05-25 | 2007-10-17 | 中国北车集团齐齐哈尔铁路车辆(集团)有限责任公司 | Bolster and side frame integral core producing method |
| CN201283411Y (en) * | 2008-09-28 | 2009-08-05 | 齐齐哈尔轨道交通装备有限责任公司 | Goods train side frame integral core mold |
| CN101733365A (en) * | 2008-11-06 | 2010-06-16 | 晋西铁路车辆有限责任公司 | Swing bolster and side frame integrated core preparation and core setting technology |
| CN201300189Y (en) * | 2008-11-14 | 2009-09-02 | 齐齐哈尔轨道交通装备有限责任公司 | Integrated core box of central frame and spring seat of rail wagon side frame and integrated core thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105537529A (en) * | 2015-12-17 | 2016-05-04 | 南车眉山车辆有限公司 | Integrated sand core for integrated molding of railway wagon side frame guiding frame and stop key mounting surface as well as production method of integrated sand core |
| CN105537529B (en) * | 2015-12-17 | 2018-07-13 | 中车眉山车辆有限公司 | One kind is for the integrally formed integrated sand core of side frame of train wagon drawing strickle guide and block key mounting surface and its manufacturing method |
| CN114101592A (en) * | 2021-11-08 | 2022-03-01 | 浙江信立智能设备有限公司 | Equipment integrating automatic core making, core connecting and core repairing method thereof |
| CN114101592B (en) * | 2021-11-08 | 2023-12-19 | 浙江信立智能设备有限公司 | Automatic core making, core connecting and core repairing integrated equipment and core repairing method thereof |
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| C06 | Publication | ||
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| CB02 | Change of applicant information |
Address after: 620032, Sichuan, Meishan province Dongpo Chongren town CSR Meishan Vehicle Co., Ltd. Applicant after: CRRC MEISHAN CO., LTD. Address before: 620032, Sichuan, Meishan province Dongpo Chongren town CSR Meishan Vehicle Co., Ltd. Applicant before: Nanche Meishan Rolling Stock Co., Ltd. |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150408 |