CN104313453A - Spheroidal graphite cast iron alloy material and preparation method thereof - Google Patents

Spheroidal graphite cast iron alloy material and preparation method thereof Download PDF

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Publication number
CN104313453A
CN104313453A CN201410562761.6A CN201410562761A CN104313453A CN 104313453 A CN104313453 A CN 104313453A CN 201410562761 A CN201410562761 A CN 201410562761A CN 104313453 A CN104313453 A CN 104313453A
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Prior art keywords
cast iron
iron alloy
hour
temperature
nodular cast
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CN201410562761.6A
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张超
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张超
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    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C37/00Cast-iron alloys
    • C22C37/04Cast-iron alloys containing spheroidal graphite
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C37/00Cast-iron alloys
    • C22C37/06Cast-iron alloys containing chromium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C37/00Cast-iron alloys
    • C22C37/10Cast-iron alloys containing aluminium or silicon

Abstract

The invention relates to a spheroidal graphite cast iron alloy material and a preparation method thereof. The spheroidal graphite cast iron alloy material is prepared from the following materials in percentage by weight: 3.2%-3.3% of carbon, 2.8%-3.0% of silicon, 0.03%-0.04% of magnesium, 0.01%-0.025% of chromium, 0.005%-0.01% of aluminum, 0.005%-0.01% of boron, 0.6%-0.8% of manganese, 0.08%-0.12% of copper, 0.01%-0.02% of vanadium, 0.01%-0.02% of zirconium, 0.03%-0.05% of tin, 0.001%-0.003% of neodymium, 0.03%-0.035% of barium, less than 0.1% of impurities and the balance of iron.

Description

A kind of nodular cast iron alloy material and preparation method
Technical field
The invention belongs to cast iron alloy field, refer to a kind of nodular cast iron alloy material and preparation method especially.
Background technology
In automobile or mechanical manufacturing field, application cast iron alloy prepares the parts or baroque parts with high-wear resistance.Use cast iron alloy can reduce the difficulty of processing with casting technique, reduce production cost.But cast iron alloy has a defect to be exactly in use, and heat-resisting ability is limited, when under high-temperature condition, can there is ruckbildung in cast iron alloy, and generally, the optimal temperature of cast iron alloy is lower than 350 DEG C.But at the parts of cast iron alloy as retarding disc, it is in braking procedure, the high temperature of 800-900 DEG C locally can be produced by friction, such result is is not only worn and torn the coating of retarding disc, cause retarding disc cladding deformation, the performance of retarding disc is had an impact, therefore, retarding disc must be changed in use for some time, which results in the raising of cost.
Summary of the invention
The object of this invention is to provide a kind of nodular cast iron alloy material technology, by the technical program, while guarantee wear resistance, improve the stability of structure during high temperature, increase the service life.
The present invention is achieved by the following technical solutions:
A kind of nodular cast iron alloy material, its composition is 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%, the zirconium of 0.01-0.02%, the tin of 0.03-0.05%, the neodymium of 0.001-0.003%, the barium of 0.03-0.035%, the impurity lower than 0.1%, surplus is iron.
A kind of nodular cast iron alloy material preparation method, comprises the following steps,
Batching,
Melting, above-mentioned batching is carried out being smelted into liquid at 1250-1280 DEG C, through removing slag etc. refining after 1180-1200 DEG C of insulation within 1-2 hour, breed, then by temperature with at least 50 DEG C/min of 100-200 DEG C that lower the temperature, be warming up to 1180-1200 DEG C again, and be incubated 0.5-1 hour;
Casting, carries out constant temperature casting and is then at the uniform velocity cooled to 150-180 DEG C of obtained blank by solution;
Thermal treatment, the quenching furnance inside holding that the blank after cooling is put into 750-780 DEG C after 2-4 hour salt bath constant temperature be quenched to 300-400 DEG C, and then after being incubated 1-2 hour, constant temperature is quenched to 130-150 DEG C;
Tempering, is cooled to room temperature after being incubated 2-4 hour in the tempering stove of 180-200 DEG C.
Described composition is 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%, the zirconium of 0.01-0.02%, the tin of 0.03-0.05%, the neodymium of 0.001-0.003%, the barium of 0.03-0.035%, the impurity lower than 0.1%, surplus is iron.
At the uniform velocity cooling rate maintains 0.5-1 DEG C/sec.
The present invention's beneficial effect is compared with the existing technology:
The application breeds by carrying out insulation before casting, and then liquid lowered the temperature after 100-200 DEG C and heat up again, and carry out insulation again and breed, cast again, be in order to ensure liquid ensure to organize before casting in crystal grain even, and the epigranular of particle, and by the cooling between incubation period, the growth of in-house crystal grain is made to occur the suppression of a short period of time, and then by heating up, make crystal grain restoration ecosystem again in tissue, but crystal grain meeting now evenly, its increment can be tending towards even, then in the quick reduction passing through the rear temperature of casting again, the mutation realizing crystalline structure in tissue reduces, be conducive to the performance improving iron alloy, this feature is the gordian technique scheme of the application.
Embodiment
Describe concrete technical scheme of the present invention by the following examples in detail, should be understood that, following embodiment only can be used for explaining the present invention and can not being interpreted as being limitation of the present invention.
A kind of nodular cast iron alloy material, its composition is 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%, the zirconium of 0.01-0.02%, the tin of 0.03-0.05%, the neodymium of 0.001-0.003%, the barium of 0.03-0.035%, the impurity lower than 0.1%, surplus is iron.
A kind of nodular cast iron alloy material preparation method, comprises the following steps,
Batching,
Melting, above-mentioned batching is carried out being smelted into liquid at 1250-1280 DEG C, through removing slag etc. refining after 1180-1200 DEG C of insulation within 1-2 hour, breed, then by temperature with at least 50 DEG C/min of 100-200 DEG C that lower the temperature, be warming up to 1180-1200 DEG C again, and be incubated 0.5-1 hour;
Casting, carries out constant temperature casting and is then at the uniform velocity cooled to 150-180 DEG C of obtained blank by solution;
Thermal treatment, the quenching furnance inside holding that the blank after cooling is put into 750-780 DEG C after 2-4 hour salt bath constant temperature be quenched to 300-400 DEG C, and then after being incubated 1-2 hour, constant temperature is quenched to 130-150 DEG C;
Tempering, is cooled to room temperature after being incubated 2-4 hour in the tempering stove of 180-200 DEG C.
Described composition is 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%, the zirconium of 0.01-0.02%, the tin of 0.03-0.05%, the neodymium of 0.001-0.003%, the barium of 0.03-0.035%, the impurity lower than 0.1%, surplus is iron.
At the uniform velocity cooling rate maintains 0.5-1 DEG C/sec.
The preparation method of following examples of the application is identical, and only composition and ratio is had any different, and therefore, below in an example, only propose the proportioning formed, preparation method is repeat specification no longer.
Embodiment 1
Preparation method is:
A kind of nodular cast iron alloy material, its composition is by weight percentage, the carbon of 3.2%, the silicon of 2.8%, the magnesium of 0.03%, chromium, the aluminium of 0.005%, boron, the manganese of 0.6%, copper, the vanadium of 0.01%, zirconium, the tin of 0.03%, neodymium, the barium of 0.03%, the impurity lower than 0.1% of 0.001% of 0.01% of 0.08% of 0.005% of 0.01%, surplus is iron.
Embodiment 2
A kind of nodular cast iron alloy material, its composition is by weight percentage, the carbon of 3.3%, the silicon of 3.0%, the magnesium of 0.04%, chromium, the aluminium of 0.01%, boron, the manganese of 0.8%, copper, the vanadium of 0.02%, zirconium, the tin of 0.05%, neodymium, the barium of 0.035%, the impurity lower than 0.1% of 0.003% of 0.02% of 0.12% of 0.01% of 0.025%, surplus is iron.
Embodiment 3
A kind of nodular cast iron alloy material, its composition is by weight percentage, the carbon of 3.22%, the silicon of 2.85%, the magnesium of 0.035%, chromium, the aluminium of 0.008%, boron, the manganese of 0.75%, copper, the vanadium of 0.015%, zirconium, the tin of 0.04%, neodymium, the barium of 0.032%, the impurity lower than 0.1% of 0.0015% of 0.015% of 0.092% of 0.008% of 0.02%, surplus is iron.

Claims (4)

1. a nodular cast iron alloy material, it is characterized in that: its composition is 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%, the zirconium of 0.01-0.02%, the tin of 0.03-0.05%, the neodymium of 0.001-0.003%, the barium of 0.03-0.035%, the impurity lower than 0.1%, surplus is iron.
2. a nodular cast iron alloy material preparation method, is characterized in that: comprise the following steps,
Batching,
Melting, above-mentioned batching is carried out being smelted into liquid at 1250-1280 DEG C, through removing slag etc. refining after 1180-1200 DEG C of insulation within 1-2 hour, breed, then by temperature with at least 50 DEG C/min of 100-200 DEG C that lower the temperature, be warming up to 1180-1200 DEG C again, and be incubated 0.5-1 hour;
Casting, carries out constant temperature casting and is then at the uniform velocity cooled to 150-180 DEG C of obtained blank by solution;
Thermal treatment, the quenching furnance inside holding that the blank after cooling is put into 750-780 DEG C after 2-4 hour salt bath constant temperature be quenched to 300-400 DEG C, and then after being incubated 1-2 hour, constant temperature is quenched to 130-150 DEG C;
Tempering, is cooled to room temperature after being incubated 2-4 hour in the tempering stove of 180-200 DEG C.
3. nodular cast iron alloy material preparation method according to claim 2, it is characterized in that: described composition is 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%, the zirconium of 0.01-0.02%, the tin of 0.03-0.05%, the neodymium of 0.001-0.003%, the barium of 0.03-0.035%, the impurity lower than 0.1%, surplus is iron.
4. nodular cast iron alloy material preparation method according to claim 2, is characterized in that: at the uniform velocity cooling rate maintains 0.5-1 DEG C/sec.
CN201410562761.6A 2014-10-20 2014-10-20 Spheroidal graphite cast iron alloy material and preparation method thereof Pending CN104313453A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104313455A (en) * 2014-10-20 2015-01-28 周欢 Nodular cast iron material
CN107653414A (en) * 2017-09-27 2018-02-02 马鞍山松鹤信息科技有限公司 A kind of high abrasion cast iron materials and its preparation technology

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102994859A (en) * 2012-11-26 2013-03-27 俞虹 Nodular cast iron alloy and preparation method thereof
CN102994860A (en) * 2012-11-26 2013-03-27 俞虹 Preparation method of nodular cast iron alloy

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102994859A (en) * 2012-11-26 2013-03-27 俞虹 Nodular cast iron alloy and preparation method thereof
CN102994860A (en) * 2012-11-26 2013-03-27 俞虹 Preparation method of nodular cast iron alloy

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104313455A (en) * 2014-10-20 2015-01-28 周欢 Nodular cast iron material
CN107653414A (en) * 2017-09-27 2018-02-02 马鞍山松鹤信息科技有限公司 A kind of high abrasion cast iron materials and its preparation technology

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