CN102978510A - Spheroidal graphite cast iron alloy - Google Patents

Spheroidal graphite cast iron alloy Download PDF

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Publication number
CN102978510A
CN102978510A CN2012105075325A CN201210507532A CN102978510A CN 102978510 A CN102978510 A CN 102978510A CN 2012105075325 A CN2012105075325 A CN 2012105075325A CN 201210507532 A CN201210507532 A CN 201210507532A CN 102978510 A CN102978510 A CN 102978510A
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China
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percent
cast iron
iron alloy
graphite cast
spheroidal graphite
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CN2012105075325A
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Chinese (zh)
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俞虹
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俞虹
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Priority to CN2012105075325A priority Critical patent/CN102978510A/en
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Abstract

The invention relates to a spheroidal graphite cast iron alloy which comprises the following components in percent by weight: 3.2-3.3 percent of carbon, 2.8-3.0 percent of silicon, 0.03-0.04 percent of magnesium, 0.01-0.025 percent of chromium, 0.005-0.01 percent of aluminum, 0.005-0.01 percent of boron, 0.6-0.8 percent of manganese, 0.08-0.12 percent of copper, 0.01-0.02 percent of vanadium, less than 0.1 percent of impurities and the balance of iron. According to the spheroidal graphite cast iron alloy, the high-temperature resistance is improved, and the application range is enlarged.

Description

Nodular cast iron alloy
Technical field
The invention belongs to the cast iron alloy field, refer to especially a kind of nodular cast iron alloy.
Background technology
In automobile or mechanical manufacturing field, use cast iron alloy and prepare parts or the baroque parts with high-wear resistance.Use cast iron alloy can reduce the difficulty of processing with casting technique, reduce production costs.But it is exactly in use that cast iron alloy has a defective, and heat-resisting ability is limited, and under high-temperature condition, ruckbildung can occur cast iron alloy, and generally speaking, the optimal temperature of cast iron alloy is lower than 350 ℃.But parts such as retarding disc at cast iron alloy, it is in braking procedure, can produce 800-900 ℃ high temperature in the part by friction, not only the wear and tear coating of retarding disc of such result, cause retarding disc coating distortion, the performance of retarding disc is exerted an influence, therefore, retarding disc must be changed in use for some time, and this has caused the raising of cost.
Summary of the invention
The purpose of this invention is to provide a kind of nodular cast iron alloy technology, by the technical program, when guaranteeing wear resistance, the stability of structure increases the service life when having improved high temperature.
The present invention is achieved by the following technical solutions:
Nodular cast iron alloy, be by weight percentage, the vanadium of the manganese of the aluminium of the magnesium of the carbon of 3.2-3.3%, the silicon of 2.8-3.0%, 0.03-0.04%, the chromium of 0.01-0.025%, 0.005-0.01%, the boron of 0.005-0.01%, 0.6-0.8%, the copper of 0.08-0.12%, 0.01-0.02%, be lower than 0.1% impurity, surplus is iron.
The beneficial effect that the present invention compares with prior art is:
By having added v element in the technical program, improved the resistance to elevated temperatures of cast iron alloy, enlarged the range of application of cast iron alloy.
Embodiment
Describe by the following examples concrete technical scheme of the present invention in detail, should be understood that, following embodiment only can be used for explaining the present invention and can not be interpreted as to be limitation of the present invention.
Nodular cast iron alloy, be by weight percentage, the vanadium of the manganese of the aluminium of the magnesium of the carbon of 3.2-3.3%, the silicon of 2.8-3.0%, 0.03-0.04%, the chromium of 0.01-0.025%, 0.005-0.01%, the boron of 0.005-0.01%, 0.6-0.8%, the copper of 0.08-0.12%, 0.01-0.02%, be lower than 0.1% impurity, surplus is iron.
The preparation method is:
Batching, be by weight percentage, the vanadium of the manganese of the aluminium of the magnesium of the carbon of 3.2-3.3%, the silicon of 2.8-3.0%, 0.03-0.04%, the chromium of 0.01-0.025%, 0.005-0.01%, the boron of 0.005-0.01%, 0.6-0.8%, the copper of 0.08-0.12%, 0.01-0.02%, be lower than 0.1% impurity, surplus is that iron is prepared burden;
Melting is smelted into liquid with above-mentioned batching at 1250-1280 ℃, wait through removing slag refining after 1180-1200 ℃ be incubated 1-2 hour and breed;
Casting, with solution carry out constant temperature casting then at the uniform velocity cooling make blank, cooling rate maintains 0.5-1 ℃/second to 150-180 ℃;
Thermal treatment, with the blank after the cooling put into 750-780 ℃ quenching furnance insulation after 2-4 hour salt bath constant temperature be quenched to 300-400 ℃, and then insulation after 1-2 hour constant temperature be quenched to 130-150 ℃;
Tempering, insulation was cooled to room temperature after 2-4 hour in 180-200 ℃ tempering stove.
Embodiment 1
The preparation method is:
Batching, be by weight percentage, 3.2% carbon, 2.8% silicon, 0.03% magnesium, 0.01% chromium, 0.005% aluminium, 0.005% boron, 0.6% manganese, 0.08% copper, 0.01% vanadium, be lower than 0.1% impurity, surplus is that iron is prepared burden;
Melting is smelted into liquid with above-mentioned batching at 1250-1280 ℃, wait through removing slag refining after 1180-1200 ℃ be incubated 1.5 hours and breed;
Casting, with solution carry out constant temperature casting then at the uniform velocity cooling make blank, cooling rate maintains 0.5-1 ℃/second to 150-180 ℃;
Thermal treatment, with the blank after the cooling put into 750-780 ℃ quenching furnance insulation after 2 hours salt bath constant temperature be quenched to 300-400 ℃, and then constant temperature is quenched to 130-150 ℃ after being incubated 1 hour;
Tempering, insulation was cooled to room temperature after 3 hours in 180-200 ℃ tempering stove.
Embodiment 2
The preparation method is:
Batching, be by weight percentage, 3.3% carbon, 3.0% silicon, 0.04% magnesium, 0.025% chromium, 0.01% aluminium, 0.01% boron, 0.8% manganese, 0.12% copper, 0.02% vanadium, be lower than 0.1% impurity, surplus is that iron is prepared burden;
Melting is smelted into liquid with above-mentioned batching at 1250-1280 ℃, wait through removing slag refining after 1180-1200 ℃ be incubated 2 hours and breed;
Casting, with solution carry out constant temperature casting then at the uniform velocity cooling make blank, cooling rate maintains 0.5-1 ℃/second to 150-180 ℃;
Thermal treatment, with the blank after the cooling put into 750-780 ℃ quenching furnance insulation after 2.5 hours salt bath constant temperature be quenched to 300-400 ℃, and then constant temperature is quenched to 130-150 ℃ after being incubated 1 hour;
Tempering, insulation was cooled to room temperature after 2.5 hours in 180-200 ℃ tempering stove.
Embodiment 3
The preparation method is:
Batching, be by weight percentage, 3.22% carbon, 2.85% silicon, 0.035% magnesium, 0.02% chromium, 0.008% aluminium, 0.008% boron, 0.75% manganese, 0.092% copper, 0.015% vanadium, be lower than 0.1% impurity, surplus is that iron is prepared burden;
Melting is smelted into liquid with above-mentioned batching at 1250-1280 ℃, wait through removing slag refining after 1180-1200 ℃ be incubated 1.5 hours and breed;
Casting, with solution carry out constant temperature casting then at the uniform velocity cooling make blank, cooling rate maintains 0.5-1 ℃/second to 150-180 ℃;
Thermal treatment, with the blank after the cooling put into 750-780 ℃ quenching furnance insulation after 3 hours salt bath constant temperature be quenched to 300-400 ℃, and then constant temperature is quenched to 130-150 ℃ after being incubated 1.5 hours;
Tempering, insulation was cooled to room temperature after 3.5 hours in 180-200 ℃ tempering stove.

Claims (1)

1. nodular cast iron alloy, it is characterized in that: be by weight percentage, the vanadium of the manganese of the aluminium of the magnesium of the carbon of 3.2-3.3%, the silicon of 2.8-3.0%, 0.03-0.04%, the chromium of 0.01-0.025%, 0.005-0.01%, the boron of 0.005-0.01%, 0.6-0.8%, the copper of 0.08-0.12%, 0.01-0.02%, be lower than 0.1% impurity, surplus is iron.
CN2012105075325A 2012-11-26 2012-11-26 Spheroidal graphite cast iron alloy Pending CN102978510A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103572145A (en) * 2013-11-04 2014-02-12 虞雪君 Ductile cast iron alloy with high strength
CN103572146A (en) * 2013-11-04 2014-02-12 虞雪君 Ductile cast iron alloy with high wear resistance
CN103572154A (en) * 2013-11-04 2014-02-12 虞雪君 Cast iron alloy with high tenacity
CN104294139A (en) * 2014-10-20 2015-01-21 周欢 Preparation method of nodular cast iron material

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6126754A (en) * 1984-07-13 1986-02-06 Kubota Ltd Double-layered cylinder liner having superior wear resistance
CN1068599A (en) * 1991-06-28 1993-02-03 招远县黄金机械总厂 A kind of wearable ductile iron
RU2308524C1 (en) * 2006-09-05 2007-10-20 Юлия Алексеевна Щепочкина Cast iron
CN102994859A (en) * 2012-11-26 2013-03-27 俞虹 Nodular cast iron alloy and preparation method thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6126754A (en) * 1984-07-13 1986-02-06 Kubota Ltd Double-layered cylinder liner having superior wear resistance
CN1068599A (en) * 1991-06-28 1993-02-03 招远县黄金机械总厂 A kind of wearable ductile iron
RU2308524C1 (en) * 2006-09-05 2007-10-20 Юлия Алексеевна Щепочкина Cast iron
CN102994859A (en) * 2012-11-26 2013-03-27 俞虹 Nodular cast iron alloy and preparation method thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103572145A (en) * 2013-11-04 2014-02-12 虞雪君 Ductile cast iron alloy with high strength
CN103572146A (en) * 2013-11-04 2014-02-12 虞雪君 Ductile cast iron alloy with high wear resistance
CN103572154A (en) * 2013-11-04 2014-02-12 虞雪君 Cast iron alloy with high tenacity
CN104294139A (en) * 2014-10-20 2015-01-21 周欢 Preparation method of nodular cast iron material

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Application publication date: 20130320