CN103862000B - A kind of end cap foundry goods core shell vertical-parting casting on flat casting technique - Google Patents
A kind of end cap foundry goods core shell vertical-parting casting on flat casting technique Download PDFInfo
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- CN103862000B CN103862000B CN201410134213.3A CN201410134213A CN103862000B CN 103862000 B CN103862000 B CN 103862000B CN 201410134213 A CN201410134213 A CN 201410134213A CN 103862000 B CN103862000 B CN 103862000B
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- 238000005266 casting Methods 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 26
- 239000011258 core-shell material Substances 0.000 title claims abstract description 14
- 230000006698 induction Effects 0.000 claims abstract description 25
- 239000004576 sand Substances 0.000 claims abstract description 10
- 238000002844 melting Methods 0.000 claims abstract description 5
- 230000008018 melting Effects 0.000 claims abstract description 5
- 238000003723 Smelting Methods 0.000 claims abstract description 4
- 239000000919 ceramic Substances 0.000 claims abstract description 4
- 239000006260 foam Substances 0.000 claims abstract description 4
- 238000003860 storage Methods 0.000 claims abstract description 4
- 229910001092 metal group alloy Inorganic materials 0.000 claims abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 24
- 229910052751 metal Inorganic materials 0.000 claims description 18
- 239000002184 metal Substances 0.000 claims description 18
- 239000007788 liquid Substances 0.000 claims description 17
- 238000004321 preservation Methods 0.000 claims description 13
- 229910052742 iron Inorganic materials 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 230000033228 biological regulation Effects 0.000 claims description 5
- 238000007872 degassing Methods 0.000 claims description 5
- 239000003500 flue dust Substances 0.000 claims description 5
- 238000007670 refining Methods 0.000 claims description 5
- 239000002893 slag Substances 0.000 claims description 5
- 239000002912 waste gas Substances 0.000 claims description 5
- 229910001047 Hard ferrite Inorganic materials 0.000 claims description 3
- 229910000805 Pig iron Inorganic materials 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000000428 dust Substances 0.000 claims description 3
- 238000007499 fusion processing Methods 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 238000002485 combustion reaction Methods 0.000 claims description 2
- 230000007547 defect Effects 0.000 abstract description 3
- 239000000155 melt Substances 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- Casting Devices For Molds (AREA)
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Abstract
The present invention relates to a kind of end cap foundry goods core shell vertical-parting casting on flat casting technique, step is melting: metal alloy melts in medium-frequency induction furnace, and smelting temperature controls at 1490 ~ 1520 DEG C; Make mould: when designing mould, carry out according to the technique of casting on flat, about two groups of dead heads divide and are located at template, intersection arranges ceramic foam filter net, the thick major part of foundry goods will be placed in the left and right of the horizontal direction of casting mold, is provided with ingate at the topmost of foundry goods; Adopt coated sand shell mould, core processed; Cast: by shell mould and inner chamber assembly of sand core good after, enter mould assembling and closing vertically and pour into a mould, first case pouring temperature controls at 1390 DEG C ~ 1400 DEG C; After cast, unpack after foundry goods naturally cools 2.5 hours in sand mold; Unpack, clear up, check, put in storage.The invention has the advantages that: cancel Split vertical parting technique, take vertical-parting casting on flat casting technique, foundry goods will avoid internal porosity, shrinkage cavity defect to produce.
Description
Technical field
The present invention relates to a kind of casting technique, particularly a kind of end cap foundry goods core shell vertical-parting casting on flat casting technique.
Background technology
Casting is poured in casting mold by the metal liquid by melting, obtains the manufacturing process of the part of required form and performance through cooled and solidified.Casting is conventional manufacture method, and advantage is: low cost of manufacture, and technological flexibility is large, and can obtain complicated shape and large-scale foundry goods, occupy very large proportion in machine-building, as lathe accounts for 60 ~ 80%, automobile accounts for 25%, and tractor accounts for 50 ~ 60%.Casting is a kind of ancient manufacture method, before China can trace back to 6000.Along with the development of industrial technology, the quality of casting heavy castings directly affects the quality of product, therefore, is cast in machinery manufacturing industry and occupies an important position.Due to now to the raising that castability, casting accuracy, casting cost and casting automation etc. require, foundry engieering is towards precise treatment and high-quality future development.
Conventional end cap cast casting technique, take Split vertical parting technique, if position is directly poured into a mould like this, the thick major part of foundry goods will be placed in the top and the bottom of casting mold respectively, be unfavorable for the internal quality of casting, special foundry goods top will produce internal porosity, shrinkage cavity defect, is badly in need of new production technology and is improved it.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind ofly produces practical, that presentation quality good, size is precisely high end cap foundry goods core shell vertical-parting casting on flat casting technique.
For solving the problems of the technologies described above, technical scheme of the present invention is: a kind of end cap foundry goods core shell vertical-parting casting on flat casting technique, and its innovative point is: described step is:
A) melting: will the pig iron in trolley be added by charger, steel scrap, foundry returns drops in medium-frequency induction furnace and carries out heat fused, the waste gas produced in medium-frequency induction furnace fusion process, flue dust is discharged by dust arrester, the fusing of medium-frequency induction furnace iron liquid is from low temperature, temperature rises gradually, final smelting temperature controls at 1490 ~ 1520 DEG C, iron liquid risen to the leaving water temperature of regulation in heat preservation zone and be incubated standing 15 minutes, then, opening operation bell, refining is carried out to iron liquid, degasification, except Slag treatment, molten metal is purified, and keep bonded hard ferrite magnet in the outlet water temperature range of setting, qualified iron liquid can be released by forehearth outlet,
B) mould is made: when designing mould, end cap foundry goods core shell vertical-parting, the running gate system of mould is pressed horizontal pouring process and is arranged, the matching used template of foundry goods makes corresponding dead head position according to the running gate system of mould, about two groups of dead heads divide and are located at template, intersection arranges ceramic foam filter net, and the thick major part of foundry goods will be placed in the left and right of the horizontal direction of casting mold, be provided with ingate at the topmost of foundry goods, adopt coated sand shell mould, core processed;
C) pour into a mould: by shell mould and inner chamber assembly of sand core good after, enter mould assembling and closing vertically and pour into a mould, first case pouring temperature controls at 1390 DEG C ~ 1400 DEG C; After cast, unpack after foundry goods naturally cools 2.5 hours in sand mold;
D) open pouring box, take out cast, after the core on cast surface is cleared up, foundry goods is tested, puts in storage.
The invention has the advantages that: cancel Split vertical parting technique, take vertical-parting casting on flat casting technique, consciously thick for foundry goods major part will be placed in the left and right of the horizontal direction of casting mold, the thick major part of foundry goods is placed in casting mold bottom, be conducive to promoting the internal quality of casting, foundry goods will avoid internal porosity, shrinkage cavity defect to produce; Shell mould is taked to be conducive to improving the visual quality of casting and dimensional accuracy; Eliminate conventional reserved shell mould and core gap approaches under green-sand die cavity during design, be so more conducive to raising shell mould rigidity, be more conducive to feeding a casting.
Accompanying drawing explanation
Fig. 1 is the mould schematic diagram of end cap foundry goods core shell vertical-parting casting on flat casting technique of the present invention.
Fig. 2 is the process chart of end cap foundry goods core shell vertical-parting casting on flat casting technique of the present invention.
Fig. 3 is medium-frequency induction furnace structural representation of the present invention.
Detailed description of the invention
Schematic diagram is as shown in Figures 1 and 2 known, and end cap foundry goods core shell vertical-parting casting on flat casting technique of the present invention comprises the following steps:
The first step, melting: will the pig iron in trolley be added by charger, steel scrap, foundry returns drops in medium-frequency induction furnace and carries out heat fused, the waste gas produced in medium-frequency induction furnace fusion process, flue dust is discharged by dust arrester, the fusing of medium-frequency induction furnace iron liquid is from low temperature, temperature rises gradually, final smelting temperature controls at 1490 ~ 1520 DEG C, iron liquid risen to the leaving water temperature of regulation in heat preservation zone and be incubated standing 15 minutes, then, opening operation bell, refining is carried out to iron liquid, degasification, except Slag treatment, molten metal is purified, and keep bonded hard ferrite magnet in the outlet water temperature range of setting, qualified iron liquid can be released by forehearth outlet.
Second step, make mould: when designing mould, end cap foundry goods core shell vertical-parting, the running gate system of mould is pressed horizontal pouring process and is arranged, the matching used template of foundry goods makes corresponding dead head position according to the running gate system of mould, about two groups of dead heads divide and are located at template, intersection arranges ceramic foam filter net, the thick major part of foundry goods will be placed in the left and right of the horizontal direction of casting mold, is provided with ingate at the topmost of foundry goods, adopts coated sand shell mould, core processed.During design core shell Split vertical parting technique, consciously thick for foundry goods major part is placed in casting mold bottom, is so more conducive to improving the internal quality of casting.Shell mould is taked to be conducive to improving the visual quality of casting and dimensional accuracy.Eliminate conventional reserved shell mould and core gap approaches under green-sand die cavity during design, be so more conducive to raising shell mould rigidity, be more conducive to feeding a casting.
3rd step, cast: by shell mould and inner chamber assembly of sand core good after, enter mould assembling and closing vertically and pour into a mould, first case pouring temperature controls at 1390 DEG C ~ 1400 DEG C; After cast, unpack after foundry goods naturally cools 2.5 hours in sand mold.
4th step, opens pouring box, takes out cast, after being cleared up by the core on cast surface, tests, puts in storage foundry goods.
Schematic diagram is as shown in Figure 3 known, the medium-frequency induction furnace used in the present invention is by medium-frequency induction furnace district 2, heat preservation zone 3, forehearth 4, charger 5, chimney 6 is formed, by charger 5, the metal alloy ingot added in trolley or foundry returns are dropped in combustion chamber, medium-frequency induction furnace district 27, heating medium-frequency induction furnace, the waste gas produced in medium-frequency induction furnace heating process, flue dust is discharged by chimney 6, low-temperature metal liquid after medium-frequency induction furnace heating flows in lower heat preservation zone, position 3 from the medium-frequency induction furnace district 2 that position is higher, in heat preservation zone 3, molten metal is risen to the temperature of regulation and be incubated.Open heat preservation zone 3 and operate fire door 8, molten metal is carried out refining, degasification, except Slag treatment, purified by molten metal, and keeps temperature of aluminum liquid to go out metal temperature scope what set, the overfall dam 9 of molten metal bottom heat preservation zone 3 enters forehearth 4, can release molten metal by forehearth 4 outlet.
More than show and describe general principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and description just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (1)
1. an end cap foundry goods core shell vertical-parting casting on flat casting technique, is characterized in that: described technique is:
A) melting: will the pig iron in trolley be added by charger, steel scrap, foundry returns drops in medium-frequency induction furnace and carries out heat fused, the waste gas produced in medium-frequency induction furnace fusion process, flue dust is discharged by dust arrester, the fusing of medium-frequency induction furnace iron liquid is from low temperature, temperature rises gradually, final smelting temperature controls at 1490 ~ 1520 DEG C, iron liquid risen to the leaving water temperature of regulation in heat preservation zone and be incubated standing 15 minutes, then, opening operation bell, refining is carried out to iron liquid, degasification, except Slag treatment, molten metal is purified, and keep bonded hard ferrite magnet in the outlet water temperature range of setting, qualified iron liquid can be released by forehearth outlet,
B) mould is made: when designing mould, end cap foundry goods core shell vertical-parting, the running gate system of mould is pressed horizontal pouring process and is arranged, the matching used template of foundry goods makes corresponding dead head position according to the running gate system of mould, about two groups of dead heads divide and are located at template, intersection arranges ceramic foam filter net, and the thick major part of foundry goods will be placed in the left and right of the horizontal direction of casting mold, be provided with ingate at the topmost of foundry goods, adopt coated sand shell mould, core processed;
C) pour into a mould: by shell mould and inner chamber assembly of sand core good after, enter mould assembling and closing vertically and pour into a mould, first case pouring temperature controls at 1390 DEG C ~ 1400 DEG C; After cast, unpack after foundry goods naturally cools 2.5 hours in sand mold;
D) open pouring box, take out cast, after the core on cast surface is cleared up, foundry goods is tested, puts in storage;
Described medium-frequency induction furnace is made up of medium-frequency induction furnace district, heat preservation zone, forehearth, charger, chimney, by charger, the metal alloy ingot added in trolley or foundry returns are dropped in medium-frequency induction furnace area combustion, heating medium-frequency induction furnace, the waste gas produced in medium-frequency induction furnace heating process, flue dust are discharged by chimney, molten metal, from lower heat preservation zone, the inflow position, medium-frequency induction furnace district that position is higher, is risen to the temperature of regulation and is incubated by the low-temperature metal liquid after medium-frequency induction furnace heating in heat preservation zone;
Open heat preservation zone operation fire door, molten metal is carried out refining, degasification, except Slag treatment, purified by molten metal, and keeps temperature of aluminum liquid to go out metal temperature scope what set, the overfall dam of molten metal bottom heat preservation zone enters forehearth, can release molten metal by forehearth outlet.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410134213.3A CN103862000B (en) | 2014-04-04 | 2014-04-04 | A kind of end cap foundry goods core shell vertical-parting casting on flat casting technique |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410134213.3A CN103862000B (en) | 2014-04-04 | 2014-04-04 | A kind of end cap foundry goods core shell vertical-parting casting on flat casting technique |
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| CN103862000A CN103862000A (en) | 2014-06-18 |
| CN103862000B true CN103862000B (en) | 2016-04-27 |
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| CN104289672A (en) * | 2014-10-24 | 2015-01-21 | 芜湖市和蓄机械股份有限公司 | Sand mold with single-side pouring cup and manufacturing method of sand mold |
| CN106077502A (en) * | 2016-06-01 | 2016-11-09 | 安徽振海重工机械有限公司 | One is applied to new-energy automobile and drives motor rotor rack casting technique |
| CN106270455A (en) * | 2016-08-30 | 2017-01-04 | 北京航星机器制造有限公司 | A kind of preparation method of large-scale vertical-parting self-curing mo(u)ld |
| CN108202131A (en) * | 2016-12-16 | 2018-06-26 | 江苏泽茗精密机械制造股份有限公司 | The casting technique of turbocharger housing |
| CN106623806B (en) * | 2017-01-19 | 2018-05-22 | 溧阳市万盛铸造有限公司 | A kind of cast casting technique |
| WO2019061239A1 (en) * | 2017-09-29 | 2019-04-04 | 吴江市液铸液压件铸造有限公司 | Process for fabricating spherical end cap casting |
| CN109014059B (en) * | 2018-09-17 | 2020-07-21 | 重庆新炬鑫机械有限公司 | Vertical casting process for vertical parting of flywheel |
| CN112475245A (en) * | 2020-11-25 | 2021-03-12 | 山东淄博燕峰活塞有限公司 | Filter base casting technology |
| CN114700471A (en) * | 2022-03-31 | 2022-07-05 | 乐清市和瑞恒模具科技有限公司 | Deslagging operation method in casting pouring process |
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| JPH0238055B2 (en) * | 1986-03-10 | 1990-08-28 | Nabeya Iron & Tool Works | SUICHOKUIKOMIHOHO |
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| US4000773A (en) * | 1976-02-09 | 1977-01-04 | Gus Sevastakis | Die assembly for continuous vertical casting of tubular metallic products |
| CN101444830A (en) * | 2007-11-28 | 2009-06-03 | 上海华新合金有限公司 | Method for casting elevator gray cast-iron scored pulley |
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