CN104128564A - Casting process of sand-lined metal mold cast nodular iron hinge lug - Google Patents
Casting process of sand-lined metal mold cast nodular iron hinge lug Download PDFInfo
- Publication number
- CN104128564A CN104128564A CN201410411068.9A CN201410411068A CN104128564A CN 104128564 A CN104128564 A CN 104128564A CN 201410411068 A CN201410411068 A CN 201410411068A CN 104128564 A CN104128564 A CN 104128564A
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- sand
- casting
- metal mold
- hinge lug
- master mold
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- 238000005266 casting Methods 0.000 title claims abstract description 30
- 239000002184 metal Substances 0.000 title claims abstract description 15
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 15
- 229910001141 Ductile iron Inorganic materials 0.000 title claims abstract description 14
- 239000004576 sand Substances 0.000 claims abstract description 34
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 25
- 238000000034 method Methods 0.000 claims abstract description 21
- 229910052742 iron Inorganic materials 0.000 claims abstract description 12
- 230000000149 penetrating effect Effects 0.000 claims description 10
- 238000000465 moulding Methods 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- 229910000859 α-Fe Inorganic materials 0.000 claims description 5
- 238000003723 Smelting Methods 0.000 claims description 3
- 241000746998 Tragus Species 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 239000002893 slag Substances 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 12
- 229910000831 Steel Inorganic materials 0.000 abstract description 5
- 239000010959 steel Substances 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Mold Materials And Core Materials (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
The invention relates to a casting process of a sand-lined metal mold cast nodular iron hinge lug. The process comprises the following steps: designing a female die and a metal mold which are totally the same as the hinge lug in shape; subsequently, manufacturing a metal mold cavity by a sand ejector, wherein the metal mold cavity is provided with upper and lower sand-lined layers with the thickness of 6mm-8mm respectively; and finally, pouring qualified molten iron into the cavity of the assembled mold according to a charger sheet, and after the pouring is finished, disassembling the mold to obtain the cast hinge lug. Compared with a conventional forged steel hinge lug, the hinge lug prepared by the sand-lined metal mold casting process has the advantages that the production cost can be reduced by 35%, and lots of time and the costs of labor, equipment and the like are saved. Meanwhile, the casting process has the beneficial effects that the production efficiency and the casting quality are effectively improved, the rejection rate of cast pieces is reduced, and the process is simple and easy to implement, wide in market prospects, remarkable in economic efficiency and applicable to most of enterprises.
Description
Technical field
The present invention relates to a kind of technique of casting spheroidal graphite cast-iron hinge ear, in particular, relate to a kind of technique that can replace traditional forged steel material hinge ear, especially a kind of casting technique of Sand-Faced Metal Mould Casting spheroidal graphite cast-iron hinge ear, this technique, under the prerequisite of ensuring the quality of products, greatly reduces the cost of part.
Background technology
In existing industrial production, the hinge ear of various shapes is widely used, but material is forged steel pieces, production cost is higher, therefore,, in 2004, our company is that national first hand adopts self-hardening sand molding technical matters to produce spheroidal graphite cast-iron hinge ear, but there is following defect in this technique in the process of preparation: cooling shrinkage porosite, the shrinkage cavity that causes slowly the inner generation of foundry goods of molten iron in due to self-hardening sand technique, and quality is unstable; Foundry goods cooling velocity is slow, and interior tissue is not fine and close, nodulizing grade low (3 grades), and material is unstable; Casting of appearance of cast is coarse; Mechanical processing of casting surplus is large, waste material, and machined cost is high; Production process is complicated, and labor strength is large, and production efficiency is low; Self-hardening resin consumption is large, and roughing sand consumption is large, causes production cost high.
Summary of the invention
The object of the invention is to, for above-mentioned defect, a kind of casting technique of eliminating the Sand-Faced Metal Mould Casting spheroidal graphite cast-iron hinge ear of the inner shrinkage porosite of hinge ear, shrinkage cavity is provided, adopt and can manufacture in batches in this way high-precision hinge ear part, thereby replace forged steel hinge ear, can reduce hinge ear production cost 35%.
Technical scheme of the present invention: a kind of casting technique of Sand-Faced Metal Mould Casting spheroidal graphite cast-iron hinge ear, comprises the following steps:
(1) design a set of and cut with scissors the on all four model of ear shape as master mold;
(2) make the swage matching with master mold, gap when swage and master mold are supporting is 6-8mm;
(3) master mold is fixed on and penetrates on sand machine worktable, swage is placed in to the top of master mold, after penetrating sand machine and clamping and to put in place, by penetrating sand machine sand-spraying hole, precoated sand is incident upon to the cavity between master mold and swage, after penetrating sand and completing, solidify 25-30s;
(4) molding after having solidified 30 seconds, after naturally cooling 25-30s, obtains the upper and lower swage die cavity that covers sand successively;
(5) the upper mo(u)ld bottom half that has covered sand is placed after screen pack, mould assembling clamps, and is hung on pouring platform;
(6) according to charger sheet, raw material are put into smelting furnace successively and heat, melt out temperature and be the qualified molten iron of 1530 ℃;
(7) adopt and to pour method molten iron is carried out to spheroidising;
(8) instantaneous ferrite inovulant poured into a mould and squeezes into by molten iron after removing slag, and be 8 minutes the duration of pouring, and pouring temperature is controlled at 1430 ℃, and casting complete, after 15 minutes, is unpacked and taken out foundry goods, obtains required hinge tragus base part.
Further, described design is a set of comprises and designs and produces hinge ear moulds of industrial equipment, running gate system, heating template and base with the on all four model of hinge ear shape.
The model of penetrating sand machine further, is that IFSI260 Ka Siding covers sand molding machine.
Further, the granularity of described instantaneous ferrite inovulant is 0.3-0.8mm.
Compared with prior art, there is following beneficial effect in the present invention: has eliminated the inner shrinkage porosite shrinkage cavity defect of hinge ear, the spheroidal graphite cast-iron of producing hinge ear steady quality and hinge ear dense internal organization, 1-2 grades of nodulizing grades, 6-8 grades of graphite sizes; Foundry goods roughness can reach Ra25 μ m; Mechanical processing of casting surplus can drop to 2.5mm, and compare the same period with forged steel hinge ear, and production cost can reduce by 35%, saves material; Stable processing technique, produces tersely, and labor strength is low, and production efficiency is high, same operating personnel, and Iron Mould Coated Sand production efficiency is 6 times of self-hardening sand; Foundry goods resin sand amount used is few, and recyclable.
The specific embodiment
Embodiment: a kind of casting technique of Sand-Faced Metal Mould Casting spheroidal graphite cast-iron hinge ear, comprises the following steps:
(1) design a set of and cut with scissors the on all four model of ear shape as master mold; This model comprises and designs and produces hinge ear moulds of industrial equipment, running gate system, heating template and base.
(2) make the swage matching with master mold, gap when swage and master mold are supporting is 6-8mm;
(3) master mold being fixed on to IFSI260 Ka Siding covers sand and penetrates sand and penetrate on the workbench of sand machine, swage is placed in to the top of master mold, after penetrating sand machine and clamping and to put in place, by penetrating sand machine sand-spraying hole, precoated sand is incident upon to the cavity between master mold and swage, curing 25s after penetrating sand and completing;
(4) molding after having solidified 30 seconds, after naturally cooling 30s, obtains the upper and lower swage die cavity that covers sand successively;
(5) the upper mo(u)ld bottom half that has covered sand is placed after screen pack, mould assembling clamps, and is hung on pouring platform;
(6) according to charger sheet, raw material are put into smelting furnace successively and heat, melt out temperature and be the qualified molten iron of 1530 ℃; Charger sheet is as follows:
C:3.58-3.72%; Si:2.4-2.6%; Cu:0.3-0.5%; Mn:0.2-0.4%, all the other are Fe.
(7) adopt and to pour method molten iron is carried out to spheroidising;
(8) the instantaneous ferrite inovulant that granularity is 0.3-0.8mm poured into a mould and squeezes into by molten iron after removing slag, and be 8 minutes the duration of pouring, and pouring temperature is controlled at 1430 ℃, and casting complete, after 15 minutes, is unpacked and taken out foundry goods, obtains required hinge tragus base part.
Claims (4)
1. a casting technique for Sand-Faced Metal Mould Casting spheroidal graphite cast-iron hinge ear, is characterized in that, comprises the following steps:
(1) design a set of and cut with scissors the on all four model of ear shape as master mold;
(2) make the swage matching with master mold, gap when swage and master mold are supporting is 6-8mm;
(3) master mold is fixed on and penetrates on sand machine worktable, swage is placed in to the top of master mold, after penetrating sand machine and clamping and to put in place, by penetrating sand machine sand-spraying hole, precoated sand is incident upon to the cavity between master mold and swage, after penetrating sand and completing, solidify 25-30s;
(4) molding after having solidified 30 seconds, after naturally cooling 25-30s, obtains the upper and lower swage die cavity that covers sand successively;
(5) the upper mo(u)ld bottom half that has covered sand is placed after screen pack, mould assembling clamps, and is hung on pouring platform;
(6) according to charger sheet, raw material are put into smelting furnace successively and heat, melt out temperature and be the qualified molten iron of 1530 ℃;
(7) adopt and to pour method molten iron is carried out to spheroidising;
(8) instantaneous ferrite inovulant poured into a mould and squeezes into by molten iron after removing slag, and be 8 minutes the duration of pouring, and pouring temperature is controlled at 1430 ℃, and casting complete, after 15 minutes, is unpacked and taken out foundry goods, obtains required hinge tragus base part.
2. the casting technique of a kind of Sand-Faced Metal Mould Casting spheroidal graphite cast-iron hinge ear according to claim 1, is characterized in that, described design is a set of to be comprised and design and produce hinge ear moulds of industrial equipment, running gate system, heating template and base with the on all four model of hinge ear shape.
3. the casting technique of a kind of Sand-Faced Metal Mould Casting spheroidal graphite cast-iron hinge ear according to claim 1, is characterized in that, described in penetrate sand machine model be that IFSI260 Ka Siding covers sand molding machine.
4. the casting technique of a kind of Sand-Faced Metal Mould Casting spheroidal graphite cast-iron hinge ear according to claim 1, is characterized in that, the granularity of described instantaneous ferrite inovulant is 0.3-0.8mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410411068.9A CN104128564B (en) | 2014-08-20 | 2014-08-20 | A kind of casting technique of Sand-Faced Metal Mould Casting spheroidal graphite cast-iron hinge ear |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410411068.9A CN104128564B (en) | 2014-08-20 | 2014-08-20 | A kind of casting technique of Sand-Faced Metal Mould Casting spheroidal graphite cast-iron hinge ear |
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| Publication Number | Publication Date |
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| CN104128564A true CN104128564A (en) | 2014-11-05 |
| CN104128564B CN104128564B (en) | 2016-02-10 |
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Cited By (14)
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|---|---|---|---|---|
| CN105081231A (en) * | 2015-09-26 | 2015-11-25 | 侯马市晋烽机械铸造有限公司 | Casting method for hub of heavy truck |
| CN105108064A (en) * | 2015-09-26 | 2015-12-02 | 侯马市晋烽机械铸造有限公司 | Method for casting bearing cap on subway locomotive by using sand faced permanent iron molding technology |
| CN105108060A (en) * | 2015-09-26 | 2015-12-02 | 侯马市晋烽机械铸造有限公司 | Method for casting end cap of transmission end of traction motor on subway locomotive |
| CN105108070A (en) * | 2015-09-26 | 2015-12-02 | 侯马市晋烽机械铸造有限公司 | Method for casting end cap of non-transmission end of traction motor on subway locomotive |
| CN105328125A (en) * | 2015-09-26 | 2016-02-17 | 侯马市晋烽机械铸造有限公司 | Casting method of rotor pressing ring for metro locomotive |
| CN106001426A (en) * | 2016-07-14 | 2016-10-12 | 安徽樵森电气科技股份有限公司 | Link plate casting technique |
| CN106311983A (en) * | 2016-08-31 | 2017-01-11 | 侯马市威创动力机械有限公司 | Method for producing cylinder cover by means of iron mold coated sand technology |
| CN107671246A (en) * | 2017-09-29 | 2018-02-09 | 侯马市晋烽机械铸造有限公司 | A kind of Sand-Faced Metal Mould Casting technique of casting D ends end cap |
| CN107671241A (en) * | 2017-09-29 | 2018-02-09 | 侯马市晋烽机械铸造有限公司 | A kind of Sand-Faced Metal Mould Casting technique for casting underground engines drive end bearing bracket |
| CN107695302A (en) * | 2017-09-29 | 2018-02-16 | 侯马市晋烽机械铸造有限公司 | A kind of Sand-Faced Metal Mould Casting technique for casting N-terminal end cap |
| CN107964622A (en) * | 2017-11-27 | 2018-04-27 | 梅州伟友耐磨材料有限公司 | A kind of excavator ductile iron gear of high-ductility high wear-resistant high strength and high hardness and preparation method thereof |
| CN108971430A (en) * | 2018-08-17 | 2018-12-11 | 襄汾县福康铸造有限责任公司 | A kind of crankshaft iron die sand casting process and its swage device |
| CN110625062A (en) * | 2019-09-30 | 2019-12-31 | 侯马市晋烽机械铸造有限公司 | Casting process for casting hinge lug by adopting shell mold |
| CN110756745A (en) * | 2018-07-28 | 2020-02-07 | 江阴市惠尔信精密装备股份有限公司 | Casting sand mold forming process |
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| CN105108064A (en) * | 2015-09-26 | 2015-12-02 | 侯马市晋烽机械铸造有限公司 | Method for casting bearing cap on subway locomotive by using sand faced permanent iron molding technology |
| CN105108060A (en) * | 2015-09-26 | 2015-12-02 | 侯马市晋烽机械铸造有限公司 | Method for casting end cap of transmission end of traction motor on subway locomotive |
| CN105108070A (en) * | 2015-09-26 | 2015-12-02 | 侯马市晋烽机械铸造有限公司 | Method for casting end cap of non-transmission end of traction motor on subway locomotive |
| CN105328125A (en) * | 2015-09-26 | 2016-02-17 | 侯马市晋烽机械铸造有限公司 | Casting method of rotor pressing ring for metro locomotive |
| CN105081231A (en) * | 2015-09-26 | 2015-11-25 | 侯马市晋烽机械铸造有限公司 | Casting method for hub of heavy truck |
| CN106001426B (en) * | 2016-07-14 | 2018-06-19 | 安徽樵森电气科技股份有限公司 | A kind of yoke plate casting technique |
| CN106001426A (en) * | 2016-07-14 | 2016-10-12 | 安徽樵森电气科技股份有限公司 | Link plate casting technique |
| CN106311983A (en) * | 2016-08-31 | 2017-01-11 | 侯马市威创动力机械有限公司 | Method for producing cylinder cover by means of iron mold coated sand technology |
| CN107671241A (en) * | 2017-09-29 | 2018-02-09 | 侯马市晋烽机械铸造有限公司 | A kind of Sand-Faced Metal Mould Casting technique for casting underground engines drive end bearing bracket |
| CN107695302A (en) * | 2017-09-29 | 2018-02-16 | 侯马市晋烽机械铸造有限公司 | A kind of Sand-Faced Metal Mould Casting technique for casting N-terminal end cap |
| CN107671246A (en) * | 2017-09-29 | 2018-02-09 | 侯马市晋烽机械铸造有限公司 | A kind of Sand-Faced Metal Mould Casting technique of casting D ends end cap |
| CN107964622A (en) * | 2017-11-27 | 2018-04-27 | 梅州伟友耐磨材料有限公司 | A kind of excavator ductile iron gear of high-ductility high wear-resistant high strength and high hardness and preparation method thereof |
| CN110756745A (en) * | 2018-07-28 | 2020-02-07 | 江阴市惠尔信精密装备股份有限公司 | Casting sand mold forming process |
| CN108971430A (en) * | 2018-08-17 | 2018-12-11 | 襄汾县福康铸造有限责任公司 | A kind of crankshaft iron die sand casting process and its swage device |
| CN110625062A (en) * | 2019-09-30 | 2019-12-31 | 侯马市晋烽机械铸造有限公司 | Casting process for casting hinge lug by adopting shell mold |
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Effective date of registration: 20231208 Address after: 043000, No. 106, East Lane, outside the southwest gate of Houma City Road, Linfen City, Shanxi Province Patentee after: Shanxi Kangtewei Machinery Manufacturing Co.,Ltd. Address before: 043000 No.11 WAIJIAN East Road, South Gate, Houma City, Linfen City, Shanxi Province Patentee before: HOUMA JINFENG MACHINERY CASTING Co.,Ltd. |
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