CN105112771B - Preparation method for high-nodularity nodular cast iron glass mold material - Google Patents
Preparation method for high-nodularity nodular cast iron glass mold material Download PDFInfo
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- CN105112771B CN105112771B CN201510559128.6A CN201510559128A CN105112771B CN 105112771 B CN105112771 B CN 105112771B CN 201510559128 A CN201510559128 A CN 201510559128A CN 105112771 B CN105112771 B CN 105112771B
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Abstract
The invention discloses a preparation method for a high-nodularity nodular cast iron glass mold material. The method comprises the steps of smelting, balling and inoculation, casting and annealing. In the balling and inoculation process, a dam which is high in middle and low in two sides is built at the bottom of a ladle; nodulizing agents, scrap iron and inoculants are laid on one side of the dam from bottom to top in sequence; a first molten iron channel and a second molten iron channel are arranged inside the dam; an outlet of the first molten iron channel and an outlet of the second molten iron channel are located in one side, with the nodulizing agents, of the dam; an inlet of the first molten iron channel and an inlet of the second molten iron channel are located in the other side of the dam and are higher than the outlets in horizontal height; smelted molten iron rushes into the ladle from the wall, on the side without the nodulizing agents of the dam, of the ladle. The high-nodularity nodular cast iron glass mold material obtained through the preparation method has the characteristics of being high in nodularity and long in service life.
Description
Technical field
The present invention relates to a kind of preparation method of cast iron materials, more particularly to a kind of high nodularization spheroidal graphite cast-iron glass mold
The preparation method of material.
Background technology
Spheroidal graphite cast-iron is high-strength cast iron material, and its intensity, toughness, wearability are higher, after nodularization and inoculation
Plasticity and toughness are greatly improved.Because the preferable mechanical performance advantage in addition of the heat conductivity of spheroidal graphite cast-iron, which is suitable for glass
The requirement of mould use environment.As glass mold needs the molten glass of frequently contact high temperature, the glass of high nodularization is needed
Mould reduce material in flake graphite reducing the oxidative attack of material internal.
The content of the invention
For above-mentioned the deficiencies in the prior art, it is an object of the invention to provide a kind of high nodularization spheroidal graphite cast-iron glass mold material
The preparation method of material, improving spheroidal graphite cast-iron Oxygen potential makes the glass mold life-span reach more than 800,000 times.
The technical scheme is that such：A kind of preparation method of high nodularization spheroidal graphite cast-iron glass mold material, bag
Include following steps：Melting is carried out to each raw material, molten iron includes following mass percent component after making melting, C 3.70-3.80%,
Si 2.15-2.35%, Mn 0.50-0.60%, S ＜ 0.01%, P0.01%, Ni 0.30-0.35%, Mo 0.15-
0.25%th, V 0.15-0.90%, Ti 0.10-0.12%, Cu 0.30-0.34%, remaining is Fe and inevitable impurity；
The low dykes and dams in middle high, both sides are constructed in ladle bottom, the side of the dykes and dams lays nodulizer, iron filings from lower to upper successively
And inovulant, the first molten iron passage and the second molten iron passage, the first molten iron passage and the second ferrum are set inside the dykes and dams
The outlet of aquaporin arranges the entrance of the side of nodulizer, the first molten iron passage and the second molten iron passage and is located at dykes and dams positioned at dykes and dams
Opposite side and level height higher than outlet, the second molten iron passage outlet higher than the first molten iron passage outlet, it is described
Nodulizer laying height is located between the first molten iron channel outlet and the second molten iron channel outlet；By molten iron after melting from the dike
Do not lay the molten iron containment wall of nodulizer side and pour in ladle in dam；Spheroidizing reacion is poured into a mould with the molten iron for breeding end；Pour
Note takes out blank from sand mo(u)ld after terminating and is made annealing treatment.
Preferably, 2-3 times highly for laying nodulizer, iron filings and inovulant total height of the dykes and dams.
Preferably, the nodulizer accounts for the 0.6-0.8% of molten steel quality, and the inovulant accounts for the 0.8- of molten steel quality
1.0%, the iron filings are completely covered nodulizer surface.
Preferably, the nodulizer is rare earth magnesium ferrosilicon alloy nodulizer.
Preferably, the smelting temperature of the molten iron is 1480-1520 DEG C.
Preferably, the annealing is that blank is put into annealing furnace to be heated to 860-890 DEG C, cools to 360- with the furnace
Come out of the stove after 380 DEG C air cooling.
Technical scheme operating process is easily controllable, it is not necessary to by nodularization with breed two process separate operations,
The glass mold material Oxygen potential of acquisition is more than 96%, and the mould production and application life-span is more than 850,000 times.
Description of the drawings
Fig. 1 is ladle structural representation.
Specific embodiment
With reference to embodiment, the invention will be further described, but not as a limitation of the invention.
Incorporated by reference to Fig. 1, the preparation method of 1 high nodularization spheroidal graphite cast-iron glass mold material of embodiment, comprise the following steps：Will
Each raw material is put into intermediate frequency furnace and carries out melting, and after making melting, molten iron includes following mass percent component, C 3.70%, Si
2.15%th, Mn 0.50%, S ＜ 0.01%, P0.01%, Ni 0.35%, Mo 0.15%, V 0.15%, Ti 0.12%, Cu
0.30%, remaining is Fe and inevitable impurity, and cast iron melting temperature is 1480 DEG C；During casting ladle, construct in 1 bottom of ladle
The low dykes and dams 2 in middle high, both sides, the side of dykes and dams 2 lay rare earth magnesium ferrosilicon alloy nodulizer 3,4 and of iron filings from lower to upper successively
Inovulant 5.Nodulizer accounts for molten steel quality 0.8%, and inovulant accounts for the 0.8 of molten steel quality, and nodulizer surface is completely covered.Dykes and dams 2
Highly for laying nodulizer 3,2 times of 5 total height of iron filings 4 and inovulant.First molten iron passage 6 and second is set inside dykes and dams 2
The outlet of ferrum water channel 7, the first molten iron passage 6 and the second ferrum water channel 7 arranges the side of nodulizer 3, the first ferrum positioned at dykes and dams 2
The entrance of aquaporin 6 and the second ferrum water channel 7 is located at the opposite side of dykes and dams 2 and level height is higher than outlet.Wherein the second molten iron
Outlet of the outlet of passage 7 higher than the first molten iron passage 6, the laying height of nodulizer 3 are located at the outlet of the first molten iron passage 6 and second
Between the outlet of ferrum water channel 7；Molten iron after melting 8 is poured into ladle 1 from the molten iron containment wall that dykes and dams 2 do not lay 3 side of nodulizer
It is interior；Spheroidizing reacion is poured into a mould with the molten iron for breeding end；Cast is taken out blank from sand mo(u)ld after terminating and is made annealing treatment, by hair
Base is put into annealing furnace and is heated to 860 DEG C, air cooling of coming out of the stove after cooling to 360 DEG C with the furnace.The glass mold material Oxygen potential of acquisition
96%, the mould production and application life-span 850,000 times.
The preparation method of 2 high nodularization spheroidal graphite cast-iron glass mold material of embodiment, comprises the following steps：Each raw material is put into
Intermediate frequency furnace carries out melting, and after making melting, molten iron includes following mass percent component, C 3.80%, Si 2.35%, Mn
0.60%th, S ＜ 0.01%, P0.01%, Ni 0.30%, Mo 0.25%, V 0.90%, Ti 0.10%, Cu 0.34%, its
It is remaining for Fe and inevitable impurity, cast iron melting temperature is 1520 DEG C；During casting ladle, 1 bottom of ladle construct it is middle high, two
The low dykes and dams 2 in side, the side of dykes and dams 2 lay rare earth magnesium ferrosilicon alloy nodulizer 3, iron filings 4 and inovulant 5 from lower to upper successively.
Nodulizer accounts for molten steel quality 0.6%, and inovulant accounts for the 0.9 of molten steel quality, and nodulizer surface is completely covered.2 height of dykes and dams is paving
If 3 times of nodulizer 3,5 total height of iron filings 4 and inovulant.First molten iron passage 6 and the second molten iron passage are set inside dykes and dams 2
7, the outlet of the first molten iron passage 6 and the second ferrum water channel 7 arranges the side of nodulizer 3, the first molten iron passage 6 positioned at dykes and dams 2
The opposite side of dykes and dams 2 is located at the entrance of the second ferrum water channel 7 and level height is higher than outlet.Wherein the second ferrum water channel 7
Outlet of the outlet higher than the first molten iron passage 6, the laying height of nodulizer 3 are located at the outlet of the first molten iron passage 6 and are led to the second molten iron
Between road 7 is exported；Molten iron after melting 8 is poured in ladle 1 from the molten iron containment wall that dykes and dams 2 do not lay 3 side of nodulizer；Nodularization
The molten iron for reacting and breeding end is poured into a mould；Cast is taken out blank from sand mo(u)ld after terminating and is made annealing treatment, and blank is put into
Annealing furnace is heated to 890 DEG C, air cooling of coming out of the stove after cooling to 380 DEG C with the furnace.The glass mold material Oxygen potential 97% of acquisition, mould
The production and application life-span 880,000 times.
The preparation method of 3 high nodularization spheroidal graphite cast-iron glass mold material of embodiment, comprises the following steps：Each raw material is put into
Intermediate frequency furnace carries out melting, and after making melting, molten iron includes following mass percent component, C 3.76%, Si 2.29%, Mn
0.55%th, S ＜ 0.01%, P0.01%, Ni 0.32%, Mo 0.16%, V 0.1%, Ti 0.1%, Cu 0.32%, remaining
For Fe and inevitable impurity, cast iron melting temperature is 1500 DEG C；During casting ladle, middle high, both sides are constructed in 1 bottom of ladle
Low dykes and dams 2, the side of dykes and dams 2 lay rare earth magnesium ferrosilicon alloy nodulizer 3, iron filings 4 and inovulant 5 from lower to upper successively.Ball
Agent accounts for molten steel quality 0.7%, and inovulant accounts for the 1.0 of molten steel quality, and nodulizer surface is completely covered.2 height of dykes and dams is laying
2 times of nodulizer 3,5 total height of iron filings 4 and inovulant.First molten iron passage 6 and the second ferrum water channel 7 are set inside dykes and dams 2,
The outlet of the first molten iron passage 6 and the second ferrum water channel 7 arranges the side of nodulizer 3,6 He of the first molten iron passage positioned at dykes and dams 2
The entrance of the second ferrum water channel 7 is located at the opposite side of dykes and dams 2 and level height is higher than outlet.Wherein the second ferrum water channel 7 goes out
Outlet of the mouth higher than the first molten iron passage 6, the laying height of nodulizer 3 are located at the first molten iron passage 6 and export and the second ferrum water channel 7
Between outlet；Molten iron after melting 8 is poured in ladle 1 from the molten iron containment wall that dykes and dams 2 do not lay 3 side of nodulizer；Nodularization is anti-
Should be poured into a mould with the molten iron for breeding end；Cast is taken out blank from sand mo(u)ld after terminating and is made annealing treatment, and blank is put into and is moved back
Stove is heated to 880 DEG C, air cooling of coming out of the stove after cooling to 370 DEG C with the furnace.The glass mold material Oxygen potential 96% of acquisition, mould life
Product service life 860,000 times.
Claims (6)
1. a kind of preparation method of high nodularization spheroidal graphite cast-iron glass mold material, it is characterised in that comprise the following steps：To each original
Material carries out melting, and after making melting, molten iron includes following mass percent component, C 3.70-3.80%, Si 2.15-2.35%, Mn
0.50-0.60%, S ＜ 0.01%, P0.01%, Ni 0.30-0.35%, Mo 0.15-0.25%, V 0.15-0.90%, Ti
0.10-0.12%, Cu 0.30-0.34%, remaining is Fe and inevitable impurity；Ladle bottom construct it is middle high, two
The low dykes and dams in side, the side of the dykes and dams lay nodulizer, iron filings and inovulant from lower to upper successively, arrange inside the dykes and dams
First molten iron passage and the second molten iron passage, the outlet of the first molten iron passage and the second molten iron passage are located at dykes and dams and arrange ball
The entrance of the side of agent, the first molten iron passage and the second molten iron passage is located at the opposite side of dykes and dams and level height is higher than
Mouthful, the outlet of the second molten iron passage is higher than the outlet of the first molten iron passage, and the nodulizer laying height is located at the first ferrum
Aquaporin is exported and the second molten iron channel outlet between；Molten iron after melting the molten iron of nodulizer side is not laid into from the dykes and dams
Containment wall is poured in ladle；Spheroidizing reacion is poured into a mould with the molten iron for breeding end；Cast is taken out blank from sand mo(u)ld after terminating and is entered
Row annealing.
2. the preparation method of high nodularization spheroidal graphite cast-iron glass mold material according to claim 1, it is characterised in that described
2-3 times highly for laying nodulizer, iron filings and inovulant total height of dykes and dams.
3. the preparation method of high nodularization spheroidal graphite cast-iron glass mold material according to claim 1, it is characterised in that described
Nodulizer accounts for the 0.6-0.8% of molten steel quality, and the inovulant accounts for the 0.8-1.0% of molten steel quality, and the iron filings are completely covered
Nodulizer surface.
4. the preparation method of high nodularization spheroidal graphite cast-iron glass mold material according to claim 1, it is characterised in that described
Nodulizer is rare earth magnesium ferrosilicon alloy nodulizer.
5. the preparation method of high nodularization spheroidal graphite cast-iron glass mold material according to claim 1, it is characterised in that described
The smelting temperature of molten iron is 1480-1520 DEG C.
6. the preparation method of high nodularization spheroidal graphite cast-iron glass mold material according to claim 1, it is characterised in that described
Annealing is that blank is put into annealing furnace to be heated to 860-890 DEG C, air cooling of coming out of the stove after cooling to 360-380 DEG C with the furnace.
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| CN105112771B true CN105112771B (en) | 2017-03-22 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106906407B (en) * | 2017-04-07 | 2018-08-21 | 常熟市宇龙模具有限责任公司 | A kind of preparation method of low-alloy vanadium titanium vermicular cast iron mould for glass bottle |
| CN107475600A (en) * | 2017-07-17 | 2017-12-15 | 常熟市精工模具制造有限公司 | The preparation method of diversification spheroidal graphite cast-iron glass mold material |
| CN108637231B (en) * | 2018-07-30 | 2023-09-12 | 广东中天创展球铁有限公司 | Ladle for spheroidizing and manufacturing process thereof |
| CN109468523B (en) * | 2018-11-02 | 2021-01-19 | 常熟市金诺精工模具有限公司 | Heat treatment process of rare earth alloy cast iron glass mold material |
| CN109266954A (en) * | 2018-11-02 | 2019-01-25 | 常熟市金诺精工模具有限公司 | The manufacturing method of rare-earth alloy casting iron glass mold material |
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