CN109570443A - A kind of casting technique of large-size horizontal machining center bed casting full mold evaporative pattern - Google Patents
A kind of casting technique of large-size horizontal machining center bed casting full mold evaporative pattern Download PDFInfo
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- CN109570443A CN109570443A CN201710893498.2A CN201710893498A CN109570443A CN 109570443 A CN109570443 A CN 109570443A CN 201710893498 A CN201710893498 A CN 201710893498A CN 109570443 A CN109570443 A CN 109570443A
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- lathe bed
- evaporative pattern
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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
- B22C9/04—Use of lost patterns
- B22C9/046—Use of patterns which are eliminated by the liquid metal in the mould
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C7/00—Patterns; Manufacture thereof so far as not provided for in other classes
- B22C7/02—Lost patterns
- B22C7/023—Patterns made from expanded plastic materials
- B22C7/026—Patterns made from expanded plastic materials by assembling preformed parts
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Mold Materials And Core Materials (AREA)
Abstract
A kind of casting technique of large-size horizontal machining center bed casting full mold evaporative pattern, technical process include: manufacture lathe bed evaporative pattern；Stream way is carried out to lathe bed evaporative pattern to dry；Moulding is carried out to lathe bed evaporative pattern；Moulding by casting bed casting is carried out to lathe bed evaporative pattern; the invention has the advantages that using evaporative pattern split cast method; it is classified as lathe bed evaporative pattern parent and lathe bed evaporative pattern material living; progress flow coat is then attached to respectively is dried together; lathe bed evaporative pattern parent progress consolidation is first filled in into molding sand when moulding; lathe bed evaporative pattern material living is put to the casting technique for continuing back-up sand again, the bed casting production for carrying out large-size horizontal machining center using evaporative pattern is made to come true.
Description
Technical field
The present invention relates to a kind of bed piece casting technique more particularly to a kind of large-size horizontal machining center bed casting are real
The casting technique of type evaporative pattern.
Background technique
Since present large-size horizontal machining center bed casting has following characteristics: 1), planform it is complicated: transverse and longitudinal height
Totally 4 guide rails, 2 rows cut slot, and along closed slide direction, there are 3-4 layers of inner cavity in the big end of lathe bed；2), overall size is big: long * wide *
Height=(2.5-3.3m) * (1.5-2.4m) * (0.9-1.2m)；3), substance is heavier: 4-9T；Therefore in current casting technique, make
Extremely difficult with the technique production of furan resin-sand full mold evaporative pattern, the written matter associated therewith that success produces is rarely found.
Summary of the invention
The object of the present invention is to provide in a kind of large-size horizontal processing carried out using furan resin-sand evaporative pattern split cast method
The casting technique of heart bed casting full mold evaporative pattern.
To achieve the above object, the technical scheme adopted by the invention is as follows:
A kind of casting technique of large-size horizontal machining center bed casting full mold evaporative pattern, it is characterized in that: its technical process packet
Include: one, bed casting is made of the big end portion of lathe bed and the small g. slice header of lathe bed point, selects the EPS density material of 18 kilograms/m3
Make lathe bed evaporative pattern parent and lathe bed evaporative pattern material living, it is big that medial bed evaporative pattern material living is equivalent to the lathe bed in bed casting
G. slice header cuts out a part, and remaining bed casting is equivalent to lathe bed evaporative pattern mother after cutting out lathe bed evaporative pattern material living
Body, and lathe bed evaporative pattern parent and lathe bed evaporative pattern material living are fixed together by concave-convex type locating slot and can form lathe bed and disappear
Mould, while selecting in the padding and support lathe bed evaporative pattern of EPS density material production support lathe bed evaporative pattern of 30 kilograms/m3
The wadding of chamber, wherein the padding is made of lathe bed small end head padding and lathe bed big end headrest material；Two, spatial digitizer is used
Cross to lathe bed evaporative pattern parent and lathe bed evaporative pattern material living, it is qualified after respectively with adhesive tape by lathe bed evaporative pattern parent and
Lathe bed evaporative pattern material seam crossing living glues, then carries out flow coat operation to lathe bed evaporative pattern parent and lathe bed evaporative pattern material living respectively,
Flow coat operation uses water based paint, and Baume degrees control passes through lathe bed evaporative pattern parent and lathe bed evaporative pattern material living recessed in 55-60
Convex locating slot, which is fixed together, carries out drying and processing, evaporative pattern parent after drying and lathe bed evaporative pattern material living separate after again into
A time difference flow coat operation of row, while again fixing lathe bed evaporative pattern parent and lathe bed evaporative pattern material living by concave-convex type locating slot
Drying and processing is carried out together, wherein the temperature of control drying kiln is 50 ± 2 DEG C, it is thick finally to control non-turning thermal center zone-coating
Degree is 0.8-1.2mm, and it is aqueous finally to control lathe bed evaporative pattern with a thickness of 1.5-2.0mm for the final turning thermal center zone-coating that controls
Rate≤2.5%；Three, the lathe bed evaporative pattern parent dried is placed in build platform before moulding, while it is female to carry out lathe bed evaporative pattern
The wadding of the inner cavity of the padding and lathe bed evaporative pattern parent of the outside of body, to prevent from being led to bed by pressure during quicksand consolidation
The deformation of body evaporative pattern parent controls gap between padding and lathe bed evaporative pattern parent and is less than 3mm, by technique requirement to bed when moulding
Body evaporative pattern parent configure running gate system, put case quicksand consolidation, wait it is to be hardened after by sandbox overturning 180 ° be placed on build platform,
All paddings and wadding of lathe bed evaporative pattern parent are taken out, then lathe bed evaporative pattern material living is put in by technologic concave-convex locating slot
Quicksand consolidation is carried out again on lathe bed evaporative pattern parent；Top box face is placed outlet rope and is led to outside case simultaneously, it is desirable that in 300*300mm2
Range is interior above together and apart from die surface 70-120mm, places out Gas chimney, outlet cigarette in the highest point of lathe bed evaporative pattern
Chimney is contacted with mold and is led to outside case, and furan resin-sand parameter used in moulding sees attached list one and the supplementary explanation of subordinate list one；Four, using opening
It is bed casting that the formula of putting, which adds the running gate system of filter screen to be poured lathe bed lost foam forming, wherein the sprue of running gate system, horizontal pour
Road, ingate ratio be 1:2:2, all paper pouring channel tubes of running channel, ingate close to casting position place filter screen, be simultaneously
Prevent lathe bed evaporative pattern occur in molding sand water suction, the moisture absorption to cause to choke fire, carbon slag the problems such as, control moulding, which is accomplished to, pours
Note time interval do not allow more than 12 hours, pouring electric furnace main chemical compositions control w(C) amount in 3.1-3.2%, w(S) amount exist
1.7-1.8%, w(CE) in 3.7-3.8%, 1430 ± 10 DEG C of pouring temperature.
The invention has the advantages that can not be carried out disposably in the bed casting full mold evaporative pattern to large-size horizontal machining center
The position of complete back-up sand is classified as lathe bed evaporative pattern parent and lathe bed evaporative pattern material living using evaporative pattern split cast method, respectively into
Row flow coat is then attached to is dried together, and lathe bed evaporative pattern parent progress consolidation is first filled in molding sand when moulding, then by bed
Body evaporative pattern material living puts the casting technique for continuing back-up sand, makes the bed casting that large-size horizontal machining center is carried out using evaporative pattern
Production comes true；Lathe bed evaporative pattern parent and lathe bed evaporative pattern material living are fixed by the positioning of concave-convex type locating slot, guarantee positioning
Accurate not sideslip, and then can precision casting bed casting.
Detailed description of the invention
Fig. 1 bed casting front plan structural schematic diagram of the present invention.
Fig. 2 bed casting reverse side planar structure schematic diagram of the present invention.
Fig. 3 lathe bed evaporative pattern parent schematic perspective view of the present invention.
Fig. 4 lathe bed evaporative pattern of the present invention material schematic perspective view living.
Fig. 5 lathe bed evaporative pattern of the present invention and padding schematic perspective view.
The back side dimensional structure diagram of running gate system Fig. 6 of the invention.
The schematic diagram of front three-dimensional structure of running gate system Fig. 7 of the invention.
In attached drawing
1, the big end portion of lathe bed；2, the small g. slice header of lathe bed point；3, lathe bed evaporative pattern parent；4, concave-convex type locating slot；5, lathe bed
Evaporative pattern material living；6, lathe bed small end head padding；7, lathe bed big end headrest material；8, sprue；9, filter screen；10, cross gate；11,
Ingate.
Specific embodiment
The invention will be further described with specific embodiment with reference to the accompanying drawing:
A kind of casting technique of large-size horizontal machining center bed casting full mold evaporative pattern, as shown in figs. 1-7, technical process packet
Include: one, bed casting is made of the big end portion 1 of lathe bed and the small g. slice header of lathe bed point 2, selects the EPS density material of 18 kilograms/m3
Material production lathe bed evaporative pattern parent 3 and lathe bed evaporative pattern material 5 living, medial bed evaporative pattern material 5 living are equivalent in bed casting
The big paragraph header part 1 of lathe bed cuts out a part, and cuts out remaining bed casting after lathe bed evaporative pattern material 5 living and be equivalent to lathe bed and disappear
Mould parent 3 is lost, and lathe bed evaporative pattern parent 3 and lathe bed evaporative pattern material 5 living are fixed together and can be formed by concave-convex type locating slot 4
Lathe bed evaporative pattern, while selecting the padding and support lathe bed of the EPS density material production support lathe bed evaporative pattern of 30 kilograms/m3
The wadding of disappearance mold cavity, wherein the padding is made of lathe bed small end head padding 6 and lathe bed big end headrest material 7；Two, it uses
Spatial digitizer crosses to lathe bed evaporative pattern parent 3 and lathe bed evaporative pattern material 5 living, it is qualified after respectively with adhesive tape by lathe bed
Evaporative pattern parent 3 and lathe bed evaporative pattern 5 seam crossings of material living glue, then living to lathe bed evaporative pattern parent 3 and lathe bed evaporative pattern respectively
Material 5 carries out flow coat operation, and flow coat operation uses water based paint, and Baume degrees is controlled in 55-60, by lathe bed evaporative pattern parent 3 and bed
Body evaporative pattern material 5 living is fixed together by concave-convex type locating slot 4 carries out drying and processing, evaporative pattern parent 3 and bed after drying
Body evaporative pattern material 5 living carries out a difference flow coat operation after separating again, while again by lathe bed evaporative pattern parent 3 and lathe bed evaporative pattern
Material 5 living is fixed together by concave-convex type locating slot 4 carries out drying and processing, wherein the temperature of control drying kiln is 50 ± 2 DEG C, most
Control non-turning thermal center zone-coating eventually with a thickness of 0.8-1.2mm, the final turning thermal center zone-coating that controls is with a thickness of 1.5-
2.0mm, it is final to control lathe bed evaporative pattern moisture content≤2.5%；Three, the lathe bed evaporative pattern parent 3 dried is placed in front of moulding
Build platform, while the wadding of the inner cavity of the padding outside lathe bed evaporative pattern parent 3 and lathe bed evaporative pattern parent 3 is carried out, to prevent
Only caused lathe bed evaporative pattern parent 3 to deform by pressure during quicksand consolidation, controlled between padding and lathe bed evaporative pattern parent 3
Gap is less than 3mm, configures running gate system to lathe bed evaporative pattern parent 3 by technique requirements when moulding, puts case quicksand consolidation, waiting is firmly
After change by sandbox overturning 180 ° be placed on build platform, take out all paddings and wadding on lathe bed evaporative pattern parent 3, then by bed
Body evaporative pattern material 5 living is put on lathe bed evaporative pattern parent 3 by technologic concave-convex locating slot 4 and carries out quicksand consolidation again；On simultaneously
Place outlet rope and lead to outside case in case face, it is desirable that within the scope of 300*300mm2 together more than and apart from die surface 70-120mm,
Gas chimney is placed out in the highest point of lathe bed evaporative pattern, Gas chimney is contacted with mold and led to outside case out, furane resins used in moulding
Sand parameter sees attached list one and the supplementary explanation of subordinate list one；Four, lathe bed evaporative pattern is poured using open plus filter screen running gate system
It is shaped to bed casting, wherein the ratio of the sprue 8, cross gate 10, ingate 11 of running gate system is 1:2:2, and running channel is whole
For paper pouring channel tube, ingate 11 places filter screen 9 close to casting position, while lathe bed evaporative pattern occurs in molding sand in order to prevent
Water suction, the moisture absorption to cause to choke fire, carbon slag the problems such as, control moulding is accomplished to duration of pouring interval and does not allow more than 12 hours,
Pouring electric furnace main chemical compositions control w(C) measure in 3.1-3.2%, w(S) measure in 1.7-1.8%, w(CE) in 3.7-3.8%, it pours
1430 ± 10 DEG C of temperature of note.
The beneficial effects of the present invention are: one can not be carried out in the bed casting full mold evaporative pattern to large-size horizontal machining center
The position of the secondary complete back-up sand of property is classified as lathe bed evaporative pattern parent 3 and lathe bed evaporative pattern material 5 living using evaporative pattern split cast method,
Flow coat is carried out respectively to be then attached to and is dried together, the progress consolidation of lathe bed evaporative pattern parent 3 is first filled in molding sand by when moulding,
Lathe bed evaporative pattern material 5 living is put to the casting technique for continuing back-up sand again, makes to carry out large-size horizontal machining center using evaporative pattern
Bed casting production comes true；Lathe bed evaporative pattern parent 3 and lathe bed evaporative pattern material 5 living are solid by the positioning of concave-convex type locating slot 4
It is fixed, guarantee registration not sideslip, and then can precision casting bed casting.
Subordinate list one: furan resin-sand parameter
| Reclaimed sand | >=200 mesh | >=140 mesh | Igloss amount | Clay content | Water content | AFS | Three sieves | Sour consumption value | Compression strength |
| Unit | % | % | % | % | % | % | ml | MPa | |
| Standard | ≤0.8 | ≤2 | ≤2.5 | ≤0.3 | ≤0.3 | 35-45 | ≥85 | 0-5 | 4-5.5 |
Subordinate list one remarks additionally: the resin amount of furan resin-sand is the weight percent that 0.9-1.1%(accounts for molding sand), solidification
Agent additional amount is that the 30-50%(of resin accounts for the weight percent of resin).
The above-described embodiments are merely illustrative of preferred embodiments of the present invention, not to design of the invention and
Protection scope is defined, and without departing from the design concept of the invention, ordinary engineering and technical personnel is to this in this field
The all variations and modifications that the technical solution of invention is made should all fall into protection scope of the present invention.
Claims (1)
1. a kind of casting technique of large-size horizontal machining center bed casting full mold evaporative pattern, it is characterised in that: its technical process
Include: that one, bed casting is made of the big end portion of lathe bed (1) and the small g. slice header of lathe bed point (2), selects the EPS of 18 kilograms/m3
Density material makes lathe bed evaporative pattern parent (3) and lathe bed evaporative pattern material (5) living, and medial bed evaporative pattern material (5) living is equivalent to
A part is cut out in the big paragraph header part (1) of the lathe bed of bed casting, and cuts out remaining lathe bed after lathe bed evaporative pattern material (5) living
Casting is equivalent to lathe bed evaporative pattern parent (3), and lathe bed evaporative pattern parent (3) and lathe bed evaporative pattern material (5) living pass through concave-convex type
Locating slot (4), which is fixed together, can form lathe bed evaporative pattern, while the EPS density material of 30 kilograms/m3 being selected to make supporting bed
The padding of body evaporative pattern and the wadding of support lathe bed evaporative pattern inner cavity, wherein the padding is by lathe bed small end head padding
(6) it is formed with lathe bed big end headrest material (7)；Two, with spatial digitizer to lathe bed evaporative pattern parent (3) and lathe bed evaporative pattern material living
(5) it crosses, it is with adhesive tape that lathe bed evaporative pattern parent (3) and lathe bed evaporative pattern material (5) seam crossing living is viscous respectively after qualified
It is good, then flow coat operation is carried out to lathe bed evaporative pattern parent (3) and lathe bed evaporative pattern material (5) living respectively, flow coat operation is using water base
Coating, Baume degrees control pass through concave-convex type locating slot in 55-60, by lathe bed evaporative pattern parent (3) and lathe bed evaporative pattern material (5) living
(4) be fixed together and carry out drying and processing, evaporative pattern parent (3) after drying and lathe bed evaporative pattern material (5) living separate after again into
A time difference flow coat operation of row, while again positioning lathe bed evaporative pattern parent (3) and lathe bed evaporative pattern material (5) living by concave-convex type
Slot (4), which is fixed together, carries out drying and processing, wherein the temperature of control drying kiln is 50 ± 2 DEG C, finally controls non-turning thermal center
Zone-coating finally controls lathe bed with a thickness of 0.8-1.2mm, the final turning thermal center zone-coating that controls with a thickness of 1.5-2.0mm
Evaporative pattern moisture content≤2.5%；Three, the lathe bed evaporative pattern parent (3) dried is placed in build platform before moulding, done simultaneously
The wadding of the inner cavity of the external padding of good lathe bed evaporative pattern parent (3) and lathe bed evaporative pattern parent (3), to prevent in quicksand consolidation
Caused lathe bed evaporative pattern parent (3) to deform by pressure in the process, controls gap between padding and lathe bed evaporative pattern parent (3) and be less than
3mm configures running gate system to lathe bed evaporative pattern parent (3) by technique requirement when moulding, puts case quicksand consolidation, wait it is to be hardened after will
Sandbox overturns 180 ° and is placed on build platform, takes out all paddings and wadding on lathe bed evaporative pattern parent (3), then lathe bed is disappeared
Mistake mould material (5) living is put on lathe bed evaporative pattern parent (3) by technologic concave-convex locating slot (4) and carries out quicksand consolidation again；Simultaneously
Top box face place outlet rope lead to outside case, it is desirable that within the scope of 300*300mm2 together more than and apart from die surface 70-
120mm places out Gas chimney in the highest point of lathe bed evaporative pattern, and Gas chimney is contacted with mold and led to outside case out；Four, using opening
It is bed casting that formula, which adds the running gate system of filter screen to be poured lathe bed lost foam forming, wherein the sprue (8) of running gate system, horizontal pour
Road (10), ingate (11) ratio be 1:2:2, all paper pouring channel tubes of running channel, ingate (11) close to casting position place
Filter screen (9), at the same in order to prevent lathe bed evaporative pattern occur in molding sand water suction, the moisture absorption to cause to choke fire, carbon slag the problems such as,
Control moulding is accomplished to duration of pouring interval and does not allow more than 12 hours, and pouring electric furnace main chemical compositions control w(C) amount exists
3.1-3.2%, w(S) amount is in 1.7-1.8%, w(CE) in 3.7-3.8%, 1430 ± 10 DEG C of pouring temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710893498.2A CN109570443B (en) | 2017-09-28 | 2017-09-28 | Casting process of full-mold lost foam of large horizontal machining center lathe bed casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710893498.2A CN109570443B (en) | 2017-09-28 | 2017-09-28 | Casting process of full-mold lost foam of large horizontal machining center lathe bed casting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109570443A true CN109570443A (en) | 2019-04-05 |
| CN109570443B CN109570443B (en) | 2020-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710893498.2A Active CN109570443B (en) | 2017-09-28 | 2017-09-28 | Casting process of full-mold lost foam of large horizontal machining center lathe bed casting |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110039005A (en) * | 2019-05-17 | 2019-07-23 | 扬州双集机械有限公司 | Automotive upholstery die cast technique |
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| CN205551389U (en) * | 2016-04-11 | 2016-09-07 | 洛阳刘氏模具有限公司 | Lathe body's disappearance mould |
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| CN1883850A (en) * | 2005-06-22 | 2006-12-27 | 无锡开源机床集团有限公司 | Casting method for magnetic plate blank used on machine tools and dedicated casting mold structure therefor |
| CN101439398A (en) * | 2008-12-26 | 2009-05-27 | 宁夏共享集团有限责任公司 | Method for casting ultralong, large-sized machine tool casting parts |
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Denomination of invention: Casting process of a large horizontal machining center bed casting in full mold lost foam casting Effective date of registration: 20220523 Granted publication date: 20200728 Pledgee: Zaozhuang Rural Commercial Bank Co.,Ltd. Taierzhuang sub branch Pledgor: SHANDONG YIHE MECHANICAL EQUIPMENT CO.,LTD. Registration number: Y2022980005984 |
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Date of cancellation: 20230804 Granted publication date: 20200728 Pledgee: Zaozhuang Rural Commercial Bank Co.,Ltd. Taierzhuang sub branch Pledgor: SHANDONG YIHE MECHANICAL EQUIPMENT CO.,LTD. Registration number: Y2022980005984 |
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Denomination of invention: The Casting Process of a Large Horizontal Machining Center Bed Casting in Full Form Lost Foam Casting Effective date of registration: 20230901 Granted publication date: 20200728 Pledgee: Zaozhuang Rural Commercial Bank Co.,Ltd. Taierzhuang sub branch Pledgor: SHANDONG YIHE MECHANICAL EQUIPMENT CO.,LTD. Registration number: Y2023980054979 |