CN110079727A - One kind is resistance to hanker chromium vermicular cast iron glass mold material and preparation method thereof - Google Patents
One kind is resistance to hanker chromium vermicular cast iron glass mold material and preparation method thereof Download PDFInfo
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- CN110079727A CN110079727A CN201910507397.6A CN201910507397A CN110079727A CN 110079727 A CN110079727 A CN 110079727A CN 201910507397 A CN201910507397 A CN 201910507397A CN 110079727 A CN110079727 A CN 110079727A
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D5/00—Heat treatments of cast-iron
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/08—Making cast-iron alloys
- C22C33/10—Making cast-iron alloys including procedures for adding magnesium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
- C22C37/06—Cast-iron alloys containing chromium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
- C22C37/10—Cast-iron alloys containing aluminium or silicon
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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Abstract
Resistance to chromium vermicular cast iron glass mold material is hankered the present invention provides a kind of.It is in terms of 100% by each component gross mass of the glass mold material, includes following components: C 3.0-3.8%, Mn≤1.0%, Si 2.0-3.0%, P < 0.2%, S≤0.12%, Cr 1.0-2.0%, surplus Fe.It is described it is resistance to hanker chromium vermicular cast iron glass mold material hardness with higher, while wearability with higher and heat resistance improve the service life of glass mold to improve the thermal deformation resistant performance and antioxygenic property of glass mold.
Description
Technical field
The invention belongs to glass mold material technical fields, and in particular to a kind of middle chromium vermicular cast iron glass mold material and
Preparation method.
Background technique
Glass mold is the important process equipment of glassware forming, is the key and easy consumption portion for producing glassware
Part.During glassware forming, mold is continually contacted with high temperature molten glass, needs to be subjected to oxidation growth and heat fatigue
Effect, while each contact surface of mold is worn due to the friction with glassware, is resisted this requires glass mold has
Oxidation, antibiosis be long, thermal fatigue resistance and the performances such as wear-resisting.Furthermore it is required that mold material is fine and close, easy to process, thermal expansion coefficient
It is small.
Vermicular cast iron be a kind of graphite form between sheet and it is spherical between a kind of new engineering material, both had and ball
Mechanical property similar in black cast iron, and there is high thermal conductivity, inoxidizability and heat-resistant anti-fatigue ability, especially suitable for heat fatigue
It is the emphasis direction of glass mold material development with the part to work under thermal shock conditions.
But in the prior art simultaneously to the research of the hardness of vermicular cast iron glass mold material, wear-resisting property and heat resistance
It can not be said to be adequately, glass mold still has thermal deformation resistant performance and antioxygenic property is insufficient, to influence glass mold
Service life the problem of.
Summary of the invention
Problems to be solved by the invention
To overcome in the prior art since the hardness of vermicular cast iron glass mold material, wear-resisting property and heat resistance are lower
And lead to the problem that glass mold thermal deformation resistant performance and antioxygenic property are insufficient, service life is shorter, the present invention provides one
Kind is resistance to hanker chromium vermicular cast iron glass mold material and preparation method thereof.
The solution to the problem
The present invention provides it is a kind of it is resistance to hanker chromium vermicular cast iron glass mold material, with each group of the glass mold material
Dividing gross mass is 100% meter, includes following components:
C mainly exists in the form of quasiflake graphite after creepage rate, very significant to glass mold matrix effect, can promote
Into the formation of ferrite matrix.The content of C is 3.0-3.8% in the present invention, it is preferred that the content of C is 3.4-3.6%.
Si is very significant to glass mold matrix effect, can promote the formation of ferrite matrix, with the increase of Si content,
Ferritic amount also increases in vermicular cast iron, but Si content be higher than 3.0% when, may make vermicular cast iron glass mold material towards
Spheroidal graphite cast-iron state transformation, to reduce the antioxygenic property and wear-resisting property of glass mold material；The content of Si is lower than
2.0%, spoken parts in traditional operas can be generated.Therefore, the silicon content of vermicular cast iron glass mold material is 2.0-3.0% in the present invention, preferably
2.0-2.3%.
Mn can form the strong oxidation film of one layer of compactness on glass mold material surface, on the one hand avoid oxygen and iron element
Body substrate contact oxyferrite matrix, so that the inoxidizability of glass mold material is improved, the densification on the other hand formed
Film hardness with higher, to improve the hardness on glass mold material surface, and then improves glass mold material
Wearability.
S is the harmful element in vermicular cast iron glass mold material, and amount containing S is higher, needs when creepage rate to consume compacted
The amount of agent is also more, and the vulcanization slag inclusion of formation is also more, not only uneconomical, but also may accelerate vermiculation.Therefore, of the invention
The content of S is less than or equal to 0.12% preferably less than 0.06% in middle iron liquid.
Cr has preferable Strengthening and Toughening effect in glass mold casting process, and the Cr of 1.0-2.0% can improve compacted ink casting
The hardness of iron glass mold material increases wearability and heat resistance, thus improve glass mold thermal deformation resistant performance and
Antioxygenic property finally improves the service life of glass mold.Preferably, the content of Cr is 1.0-1.2% in the present invention.
Further, the hardness of the glass mold material is 240-280HB.
The present invention also provides a kind of resistance to preparation method for hankering chromium vermicular cast iron glass mold material, the preparation methods
The following steps are included:
(1) stock up: by the pig iron, steel scrap, foundry returns, manganese iron, ferrosilicon, ferrochrome carry out chemical composition analysis, then according to
Lower mass percent weighs the above furnace charge configuration in electric furnace: C 3.0-3.8%, Mn≤1.0%, Si2.0-3.0%, P <
0.2%, S≤0.12%, Cr 1.0-2.0%, surplus Fe.
(2) melting: the load weighted pig iron, steel scrap, foundry returns melting in electric furnace will be added according to the ratio, and will add manganese after fusing
Iron, ferrosilicon, ferrochrome continue melting, and chemical element sampling analysis is carried out when temperature reaches 1450 DEG C and adjusts chemical element
Percentage composition determines that stokehold ingredient is qualified, continues to heat up, in 1520-1540 DEG C of progress melting, obtain original iron melt；
(3) it compactedization and breeds: vermiculizer and inovulant is added in transhipment bag, then by tapping temperature be 1490-1500 DEG C
Original iron melt pour into and carry out compactedization and inoculation in the transhipment bag, then skim；
(4) it is poured: being cooled to 1320-1400 DEG C of pouring temperature to the iron liquid through compactedization and inoculation in step (3), then
It is poured into casting mold and is cooled and shaped, duration of pouring 6-10min obtains casting；
(5) it anneals: the casting that step (4) obtains is made annealing treatment, annealing temperature is 900-920 DEG C, annealing time
It is 4-6 hours, obtains glass die blank.
Further, in step (1), the above furnace charge configuration is weighed in electric furnace according to following mass percent: C3.4-
3.6%, Mn < 0.5%, Si 2.0-2.3%, P < 0.2%, S < 0.06%, Cr 1.0-1.2%, surplus Fe.
Casting mold used in step (4), which covers, chill loam core for molding glass mold inner cavity, in glass mold
Chamber is contacted with the glass melt of high temperature for a long time, therefore chill is added at glass mold inner cavity when casting moulding, makes glass mold
The surface of internal cavity Quench in casting solidification, obtains sufficiently large degree of supercooling, so that globular graphite is formed, with far from glass mold
The decrease of inner cavity iron chill shock chilling ability, it is intermediate to be gradually transitions the higher quasiflake graphite of nodulizing rate with outer circle.Such graphite
The gradient distribution of tissue changes, heat resistance is combined with thermal conductivity and realize glass mold inoxidizability and service life it
Between balance.
To obtain qualified vermicular cast iron glass mold, needing to be added according to working condition and casting features has desulfurization net
The vermiculizer of change effect.In the present invention, the vermiculizer selects magnesium-rare earth, the magnesium-rare earth vermiculizer process range
Wider, chilling tendency is smaller, in iron liquid can self-boiling without stirring, and vermiculation effect stablize.When the vermiculizer is added
When amount is lower than 0.6%, then vermiculation effect is inadequate, is also easy to produce flake graphite；When the vermiculizer additional amount is higher than 0.8%, then
Excessively, easily there is globular graphite, therefore the additional amount of heretofore described vermiculizer is the 0.6- of original iron melt gross mass in compactedization
0.8%.
Temperature control is also critically important to creepage rate process, and original iron melt tapping temperature is 1490-1500 DEG C, and tapping temperature is low
May cause in 1490 DEG C slag inclusion, cannot compactedization the problem of, tapping temperature be higher than 1500 DEG C vermiculizer scaling loss may be made excessive,
Vermiculation effect is poor.
Iron liquid after creepage rate still needs to carry out inoculation, and heretofore described inovulant uses silicon titanate innoculant, pregnant
Educating processing can reduce chilling tendency caused by magnesium-rare earth vermiculizer, provide enough graphite crystallization cores, increase eutectic
Group's number improves the mechanical property of glass mold material so that graphite is tiny and is evenly distributed, and delays vermiculation, therefore,
The additional amount of the inovulant is the 0.4-0.6% of original iron melt gross mass.
Iron liquid after compactedization and inoculation should be poured in time, vermiculation phenomenon otherwise easily occur.In the present invention
The duration of pouring controls in 6-10min.
Annealing treating process can eliminate stress, and Reducing distortion reduces crackle；Hardness is reduced, machining ability is improved；
Crystal grain is refined, metallographic structure is adjusted；With material structure and ingredient, improve material property.Further, described to move back in step (5)
Fiery treatment process includes: that the casting that step (4) obtains is heated to 920 DEG C to keep the temperature 4 hours, then with 40 DEG C per hour of speed
It is cooled to 780 DEG C and keeps the temperature 4 hours again, finally come out of the stove air-cooled with being furnace-cooled to after 300 DEG C with the cooling of 40 DEG C per hour of speed, obtain
Glass die blank.
It is detected by ultrasonic velocity method, the nodulizing rate for the glass mold material that made as described above method obtains is 60-
70%.
The effect of invention
It is provided by the invention it is resistance to hanker chromium vermicular cast iron glass mold material hardness with higher, while it is with higher
Wearability and heat resistance improve glass mold to improve the thermal deformation resistant performance and antioxygenic property of glass mold
Service life；
In addition, the resistance to preparation method for hankering chromium vermicular cast iron glass mold material provided by the invention is easy to operate, it is suitable for
In industrialization large-scale production.
Specific embodiment
Hereinafter, a specific embodiment of the invention will be specifically described, it should be noted that embodiment party of the invention
Formula is not limited to following explanation, therefore, illustrates also to be not construed as carrying out all enforceable forms of the invention below
Limitation.In addition, the organization appeared below is international unit title unless there are specified otherwise.
Embodiment 1
(1) stock up: by the pig iron, steel scrap, foundry returns, manganese iron, ferrosilicon, ferrochrome carry out chemical composition analysis, then according to
Lower mass percent weighs the above furnace charge configuration in electric furnace: C 3.4%, Mn 0.4%, Si2.3%, P 0.18%, S
0.05%, Cr 1.0%, surplus Fe.
(2) melting: the load weighted pig iron, steel scrap, foundry returns melting in electric furnace will be added according to the ratio, and will add manganese after fusing
Iron, ferrosilicon, ferrochrome continue melting, and chemical element sampling analysis is carried out when temperature reaches 1450 DEG C and adjusts chemical element
Percentage composition determines that stokehold ingredient is qualified, continues to heat up, in 1520 DEG C of progress meltings, obtain original iron melt；
(3) it compactedization and breeds: by the 0.8% of original iron melt gross mass magnesium-rare earth vermiculizer and original iron melt gross mass
0.6% silicon titanate innoculant is added in transhipment bag, then by the original iron melt that tapping temperature is 1500 DEG C pour into the transhipment bag into
Row compactedization and inoculation, then skim；
(4) it is poured: being cooled to 1400 DEG C of pouring temperature to the iron liquid through compactedization and inoculation in step (3), then be poured
It is cooled and shaped into casting mold, duration of pouring 10min obtains casting；
(5) it anneals: the casting that step (4) obtains being heated to 920 DEG C and keeps the temperature 4 hours, then with 40 DEG C per hour of speed
Degree is cooled to 780 DEG C and keeps the temperature 4 hours again, finally comes out of the stove air-cooled with being furnace-cooled to after 300 DEG C with 40 DEG C per hour of speed cooling, obtains
To glass die blank.
Detection: detecting hardness by Brinell hardness tester is 240HB, and detecting nodulizing rate by ultrasonic velocity method is 60%；
The resistance to of acquisition hankers producing glassware, the military service of the mold after chromium vermicular cast iron glass mold is installed with 10 times/mould per minute
Service life is 970,000 times.
Embodiment 2
(1) stock up: by the pig iron, steel scrap, foundry returns, manganese iron, ferrosilicon, ferrochrome carry out chemical composition analysis, then according to
Lower mass percent weighs the above furnace charge configuration in electric furnace: C 3.6%, Mn 0.3%, Si2.0%, P 0.18%, S
0.03%, Cr 1.2%, surplus Fe.
(2) melting: the load weighted pig iron, steel scrap, foundry returns melting in electric furnace will be added according to the ratio, and will add manganese after fusing
Iron, ferrosilicon, ferrochrome continue melting, and chemical element sampling analysis is carried out when temperature reaches 1450 DEG C and adjusts chemical element
Percentage composition determines that stokehold ingredient is qualified, continues to heat up, in 1520 DEG C of progress meltings, obtain original iron melt；
(3) it compactedization and breeds: by the 0.6% of original iron melt gross mass magnesium-rare earth vermiculizer and original iron melt gross mass
0.4% silicon titanate innoculant is added in transhipment bag, then by the original iron melt that tapping temperature is 1500 DEG C pour into the transhipment bag into
Row compactedization and inoculation, then skim；
(4) it is poured: being cooled to 1400 DEG C of pouring temperature to the iron liquid through compactedization and inoculation in step (3), then be poured
It is cooled and shaped into casting mold, duration of pouring 10min obtains casting；
(5) it anneals: the casting that step (4) obtains being heated to 920 DEG C and keeps the temperature 4 hours, then with 40 DEG C per hour of speed
Degree is cooled to 780 DEG C and keeps the temperature 4 hours again, finally comes out of the stove air-cooled with being furnace-cooled to after 300 DEG C with 40 DEG C per hour of speed cooling, obtains
To glass die blank.
Detection: detecting hardness by Brinell hardness tester is 280HB, and detecting nodulizing rate by ultrasonic velocity method is 70%；
The resistance to of acquisition hankers producing glassware, the military service of the mold after chromium vermicular cast iron glass mold is installed with 10 times/mould per minute
Service life is 1,050,000 times.
Embodiment 3
(1) stock up: by the pig iron, steel scrap, foundry returns, manganese iron, ferrosilicon, ferrochrome carry out chemical composition analysis, then according to
Lower mass percent weighs the above furnace charge configuration in electric furnace: C 3.5%, Mn 0.4%, Si2.1%, P 0.1%, S
0.05%, Cr 1.1%, surplus Fe.
(2) melting: the load weighted pig iron, steel scrap, foundry returns melting in electric furnace will be added according to the ratio, and will add manganese after fusing
Iron, ferrosilicon, ferrochrome continue melting, and chemical element sampling analysis is carried out when temperature reaches 1450 DEG C and adjusts chemical element
Percentage composition determines that stokehold ingredient is qualified, continues to heat up, in 1520 DEG C of progress meltings, obtain original iron melt；
(3) it compactedization and breeds: by the 0.8% of original iron melt gross mass magnesium-rare earth vermiculizer and original iron melt gross mass
0.6% silicon titanate innoculant is added in transhipment bag, then by the original iron melt that tapping temperature is 1500 DEG C pour into the transhipment bag into
Row compactedization and inoculation, then skim；
(4) it is poured: being cooled to 1400 DEG C of pouring temperature to the iron liquid through compactedization and inoculation in step (3), then be poured
It is cooled and shaped into casting mold, duration of pouring 10min obtains casting；
(5) it anneals: the casting that step (4) obtains being heated to 920 DEG C and keeps the temperature 4 hours, then with 40 DEG C per hour of speed
Degree is cooled to 780 DEG C and keeps the temperature 4 hours again, finally comes out of the stove air-cooled with being furnace-cooled to after 300 DEG C with 40 DEG C per hour of speed cooling, obtains
To glass die blank.
Detection: detecting hardness by Brinell hardness tester is 250HB, and detecting nodulizing rate by ultrasonic velocity method is 66%；
The resistance to of acquisition hankers producing glassware, the military service of the mold after chromium vermicular cast iron glass mold is installed with 10 times/mould per minute
Service life is 1,000,000 times.
Comparative example 1
(1) stock up: by the pig iron, steel scrap, foundry returns, manganese iron, ferrosilicon, ferrochrome carry out chemical composition analysis, then according to
Lower mass percent weighs the above furnace charge configuration in electric furnace: C 3.4%, Mn 0.4%, Si2.3%, P 0.18%, S
0.05%, Cr 0.8%, surplus Fe.
(2) melting: the load weighted pig iron, steel scrap, foundry returns melting in electric furnace will be added according to the ratio, and will add manganese after fusing
Iron, ferrosilicon, ferrochrome continue melting, and chemical element sampling analysis is carried out when temperature reaches 1450 DEG C and adjusts chemical element
Percentage composition determines that stokehold ingredient is qualified, continues to heat up, in 1520 DEG C of progress meltings, obtain original iron melt；
(3) it compactedization and breeds: by the 0.8% of original iron melt gross mass magnesium-rare earth vermiculizer and original iron melt gross mass
0.6% silicon titanate innoculant is added in transhipment bag, then by the original iron melt that tapping temperature is 1500 DEG C pour into the transhipment bag into
Row compactedization and inoculation, then skim；
(4) it is poured: being cooled to 1400 DEG C of pouring temperature to the iron liquid through compactedization and inoculation in step (3), then be poured
It is cooled and shaped into casting mold, duration of pouring 10min obtains casting；
(5) it anneals: the casting that step (4) obtains being heated to 920 DEG C and keeps the temperature 4 hours, then with 40 DEG C per hour of speed
Degree is cooled to 780 DEG C and keeps the temperature 4 hours again, finally comes out of the stove air-cooled with being furnace-cooled to after 300 DEG C with 40 DEG C per hour of speed cooling, obtains
To glass die blank.
Detection: detecting hardness by Brinell hardness tester is 200HB, and detecting nodulizing rate by ultrasonic velocity method is 66%；
The resistance to of acquisition hankers producing glassware, the military service of the mold after chromium vermicular cast iron glass mold is installed with 10 times/mould per minute
Service life is 700,000 times.
Comparative example 2
(1) stock up: by the pig iron, steel scrap, foundry returns, manganese iron, ferrosilicon, ferrochrome carry out chemical composition analysis, then according to
Lower mass percent weighs the above furnace charge configuration in electric furnace: C 3.4%, Mn 0.4%, Si2.3%, P 0.18%, S
0.05%, Cr 0.9%, surplus Fe.
(2) melting: the load weighted pig iron, steel scrap, foundry returns melting in electric furnace will be added according to the ratio, and will add manganese after fusing
Iron, ferrosilicon, ferrochrome continue melting, and chemical element sampling analysis is carried out when temperature reaches 1450 DEG C and adjusts chemical element
Percentage composition determines that stokehold ingredient is qualified, continues to heat up, in 1520 DEG C of progress meltings, obtain original iron melt；
(3) it compactedization and breeds: by the 0.8% of original iron melt gross mass magnesium-rare earth vermiculizer and original iron melt gross mass
0.6% silicon titanate innoculant is added in transhipment bag, then by the original iron melt that tapping temperature is 1500 DEG C pour into the transhipment bag into
Row compactedization and inoculation, then skim；
(4) it is poured: being cooled to 1400 DEG C of pouring temperature to the iron liquid through compactedization and inoculation in step (3), then be poured
It is cooled and shaped into casting mold, duration of pouring 10min obtains casting；
(5) it anneals: the casting that step (4) obtains being heated to 920 DEG C and keeps the temperature 4 hours, then with 40 DEG C per hour of speed
Degree is cooled to 780 DEG C and keeps the temperature 4 hours again, finally comes out of the stove air-cooled with being furnace-cooled to after 300 DEG C with 40 DEG C per hour of speed cooling, obtains
To glass die blank.
Detection: detecting hardness by Brinell hardness tester is 210HB, and detecting nodulizing rate by ultrasonic velocity method is 66%；
The resistance to of acquisition hankers producing glassware, the military service of the mold after chromium vermicular cast iron glass mold is installed with 10 times/mould per minute
Service life is 740,000 times.
Comparative example 3
(1) stock up: by the pig iron, steel scrap, foundry returns, manganese iron, ferrosilicon, ferrochrome carry out chemical composition analysis, then according to
Lower mass percent weighs the above furnace charge configuration in electric furnace: C 3.4%, Mn 0.4%, Si3.2%, P 0.18%, S
0.05%, Cr 1.0%, surplus Fe.
(2) melting: the load weighted pig iron, steel scrap, foundry returns melting in electric furnace will be added according to the ratio, and will add manganese after fusing
Iron, ferrosilicon, ferrochrome continue melting, and chemical element sampling analysis is carried out when temperature reaches 1450 DEG C and adjusts chemical element
Percentage composition determines that stokehold ingredient is qualified, continues to heat up, in 1520 DEG C of progress meltings, obtain original iron melt；
(3) it compactedization and breeds: by the 0.8% of original iron melt gross mass magnesium-rare earth vermiculizer and original iron melt gross mass
0.6% silicon titanate innoculant is added in transhipment bag, then by the original iron melt that tapping temperature is 1500 DEG C pour into the transhipment bag into
Row compactedization and inoculation, then skim；
(4) it is poured: being cooled to 1400 DEG C of pouring temperature to the iron liquid through compactedization and inoculation in step (3), then be poured
It is cooled and shaped into casting mold, duration of pouring 10min obtains casting；
(5) it anneals: the casting that step (4) obtains being heated to 920 DEG C and keeps the temperature 4 hours, then with 40 DEG C per hour of speed
Degree is cooled to 780 DEG C and keeps the temperature 4 hours again, finally comes out of the stove air-cooled with being furnace-cooled to after 300 DEG C with 40 DEG C per hour of speed cooling, obtains
To glass die blank.
Detection: detecting hardness by Brinell hardness tester is 230HB, and detecting nodulizing rate by ultrasonic velocity method is 45%；
The resistance to of acquisition hankers producing glassware, the military service of the mold after chromium vermicular cast iron glass mold is installed with 10 times/mould per minute
Service life is 550,000 times.
Pass through the comparison of embodiment 1-3 and comparative example 1-2, it can be seen that acquired when the content of Cr is lower than 1.0%
The hardness of vermicular cast iron glass mold material reduce, wearability and heat resistance also reduce, to reduce the anti-of glass mold
Thermal deformation behavior and antioxygenic property, the service life for eventually leading to glass mold greatly shorten.
Pass through the comparison of embodiment 1-3 and comparative example 3, it can be seen that obtained when the content of Si is higher than 3.0%
The nodulizing rate of vermicular cast iron glass mold material is relatively low, and vermicular cast iron glass mold material changes towards spheroidal graphite cast-iron state, from
And the antioxygenic property and wear-resisting property of glass mold material are reduced, it eventually leads to its military service and receives a mandate and substantially reduce.
Claims (9)
1. one kind is resistance to hanker chromium vermicular cast iron glass mold material, which is characterized in that with each component of the glass mold material
Gross mass is 100% meter, includes following components:
2. resistance to chromium vermicular cast iron glass mold material is hankered according to claim 1, which is characterized in that with the glass molds
The each component gross mass for having material is 100% meter, includes following components:
3. resistance to chromium vermicular cast iron glass mold material is hankered according to claim 1 or 2, which is characterized in that the glass
The hardness of mold materials is 240-280HB.
4. a kind of resistance to preparation method for hankering chromium vermicular cast iron glass mold material, which is characterized in that the preparation method includes
Following steps:
(1) it stocks up: the pig iron, steel scrap, foundry returns, manganese iron, ferrosilicon, ferrochrome being subjected to chemical composition analysis, then according to following matter
Amount percentage weighs the above furnace charge configuration in electric furnace: C 3.0-3.8%, Mn≤1.0%, Si 2.0-3.0%, P < 0.2%, S
≤ 0.12%, Cr 1.0-2.0%, surplus Fe.
(2) melting: will according to the ratio the load weighted pig iron, steel scrap, foundry returns be added electric furnace in melting, added after fusing manganese iron,
Ferrosilicon, ferrochrome continue melting, and chemical element sampling analysis is carried out when temperature reaches 1450 DEG C and adjusts the hundred of chemical element
Divide content, determines that stokehold ingredient is qualified, continue to heat up, in 1520-1540 DEG C of progress melting, obtain original iron melt；
(3) it compactedization and breeds: vermiculizer and inovulant is added in transhipment bag, then the original for being 1490-1500 DEG C by tapping temperature
Iron liquid, which is poured into, carries out compactedization and inoculation in the transhipment bag, then skims；
(4) it is poured: being cooled to 1320-1400 DEG C of pouring temperature to the iron liquid through compactedization and inoculation in step (3), then be poured
It is cooled and shaped into casting mold, duration of pouring 6-10min obtains casting；
(5) it anneals: the casting that step (4) obtains is made annealing treatment, annealing temperature is 900-920 DEG C, annealing time 4-6
Hour, obtain glass die blank.
5. the resistance to preparation method for hankering chromium vermicular cast iron glass mold material according to claim 4, which is characterized in that step
Suddenly in (1), the above furnace charge configuration is weighed in electric furnace according to following mass percent: C 3.4-3.6%, Mn < 0.5%, Si
2.0-2.3%, P < 0.2%, S < 0.06%, Cr 1.0-1.2%, surplus Fe.
6. the resistance to preparation method for hankering chromium vermicular cast iron glass mold material according to claim 4 or 5, feature exist
In in step (4), the annealing process includes: that the casting that step (4) obtains is heated to 920 DEG C to keep the temperature 4 hours, so
780 DEG C are cooled to 40 DEG C per hour of speed afterwards and keeps the temperature 4 hours again, finally with the cooling of 40 DEG C per hour of speed with being furnace-cooled to
It comes out of the stove after 300 DEG C air-cooled, obtains glass die blank.
7. the resistance to preparation method for hankering chromium vermicular cast iron glass mold material according to claim 4 or 5, feature exist
In the vermiculizer is magnesium-rare earth, and the additional amount of the vermiculizer is the 0.6-0.8% of the original iron melt gross mass.
8. the resistance to preparation method for hankering chromium vermicular cast iron glass mold material according to claim 4 or 5, feature exist
In the inovulant is silicon titanate innoculant, and the additional amount of the inovulant is the 0.4-0.6% of the original iron melt gross mass.
9. the resistance to preparation method for hankering chromium vermicular cast iron glass mold material according to claim 4 or 5, feature exist
In the nodulizing rate for the glass mold material that the preparation method obtains is 60-70%.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114351039A (en) * | 2022-01-14 | 2022-04-15 | 常熟市精工模具制造有限公司 | Vermicular graphite cast iron glass mold and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6027407A (en) * | 1983-07-25 | 1985-02-12 | Kawasaki Steel Corp | Composite high-chromium cast iron roll |
| JPS62142744A (en) * | 1985-12-18 | 1987-06-26 | Toyo Chuko Kk | Cast iron for glass forming |
| DE102005010090A1 (en) * | 2005-03-04 | 2006-09-07 | Federal-Mogul Friedberg Gmbh | Cast iron material with graphite formation |
| CN102371344A (en) * | 2010-08-20 | 2012-03-14 | 鞍钢重型机械有限责任公司 | Process for casting hot air grate for blast furnace |
| CN108467987A (en) * | 2018-04-27 | 2018-08-31 | 成都新志实业有限公司 | Silicon vermicular cast iron glass mold material and preparation method thereof in low-alloy |
-
2019
- 2019-06-12 CN CN201910507397.6A patent/CN110079727A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6027407A (en) * | 1983-07-25 | 1985-02-12 | Kawasaki Steel Corp | Composite high-chromium cast iron roll |
| JPS62142744A (en) * | 1985-12-18 | 1987-06-26 | Toyo Chuko Kk | Cast iron for glass forming |
| DE102005010090A1 (en) * | 2005-03-04 | 2006-09-07 | Federal-Mogul Friedberg Gmbh | Cast iron material with graphite formation |
| CN102371344A (en) * | 2010-08-20 | 2012-03-14 | 鞍钢重型机械有限责任公司 | Process for casting hot air grate for blast furnace |
| CN108467987A (en) * | 2018-04-27 | 2018-08-31 | 成都新志实业有限公司 | Silicon vermicular cast iron glass mold material and preparation method thereof in low-alloy |
Non-Patent Citations (2)
| Title |
|---|
| 冯旻等: "《机械工程材料及热加工 第2版"》", 31 August 2009, 哈尔滨工业大学出版社 * |
| 徐峰等: "《新编金属材料手册》", 31 March 2017, 安徽科学技术出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114351039A (en) * | 2022-01-14 | 2022-04-15 | 常熟市精工模具制造有限公司 | Vermicular graphite cast iron glass mold and preparation method thereof |
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