CN112921229A - Casting process of nodular cast iron - Google Patents
Casting process of nodular cast iron Download PDFInfo
- Publication number
- CN112921229A CN112921229A CN201911237819.9A CN201911237819A CN112921229A CN 112921229 A CN112921229 A CN 112921229A CN 201911237819 A CN201911237819 A CN 201911237819A CN 112921229 A CN112921229 A CN 112921229A
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- CN
- China
- Prior art keywords
- percent
- cast iron
- nodular cast
- casting process
- weight
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Classifications
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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
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C1/00—Refining of pig-iron; Cast iron
- C21C1/10—Making spheroidal graphite 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
- C22C37/00—Cast-iron alloys
- C22C37/04—Cast-iron alloys containing spheroidal graphite
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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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (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 nodular cast iron, which comprises the following components in percentage by weight: 2 to 3 percent of C, 0.1 to 0.2 percent of Ni, 1.25 to 2.25 percent of Si, 1.5 to 1.7 percent of Mn, 0.1 to 0.25 percent of Cr, 0.3 to 0.8 percent of Mo, 0.02 to 0.06 percent of Cu, 0.02 to 0.05 percent of Ti, 0.02 to 0.15 percent of V, 0.01 to 0.03 percent of P, 0.01 to 0.02 percent of S, 0.01 to 0.15 percent of Mg, and the balance of Fe. The invention has high hardness, good wear resistance and difficult fracture, the service life of resisting impact fatigue of 9 m high drop is more than 15000 times, parts manufactured by the austenite nodular cast iron are not easy to damage, and the production and manufacturing cost is greatly reduced.
Description
Technical Field
The invention relates to the technical field of casting metallurgy, in particular to a casting process of nodular cast iron.
Background
The ductile cast iron is developed and put into production in 1950, the ductile cast iron is used as a high-strength cast iron material, the comprehensive performance of the ductile cast iron material is close to that of steel, the ductile cast iron material is daily used for manufacturing parts which are greatly stressed and bear vibration and impact, the ductile cast iron material is widely applied to industries such as automobiles, agricultural machinery, ships, metallurgy, chemical engineering and the like, and the ductile cast iron material is only inferior to gray cast iron after the rapid development in recent years and becomes an important cast iron material. However, the austenitic nodular cast iron is prepared by smelting mainly iron, carbon and nickel, adding elements such as silicon, manganese, copper and chromium, and the like, and has stable cast iron mainly comprising an austenitic matrix at room temperature.
Disclosure of Invention
The invention aims to provide a casting process of austenitic ductile iron which has good wear resistance and is not easy to break.
The invention is realized by the following technical scheme: a casting process of nodular cast iron comprises the following components in percentage by weight: 2 to 3 percent of C, 0.1 to 0.2 percent of Ti, 1.25 to 2.25 percent of Si, 1.5 to 1.7 percent of Mn, 0.1 to 0.25 percent of Cr, 0.3 to 0.8 percent of Mo, 0.04 to 0.07 percent of Ni, 0.02 to 0.06 percent of Cu, 0.02 to 0.15 percent of V, 0.01 to 0.03 percent of P, 0.01 to 0.02 percent of S, 0.01 to 0.15 percent of Mg, and the balance of Fe.
Further, H is V/S +10, H is the modulus of the austenite bar nodular cast iron, V is the volume of the austenite bar nodular cast iron, S is the surface area of the austenite bar nodular cast iron, the modulus is 35 < H < 39, and the modulus is mm.
Further, the paint comprises the following components in percentage by weight: c2%, Si 1.25-2%, Mn 1.5%, Cr 0.1-0.2%, Mo 0.3-0.35%, Ni 0.1-0.15%, Cu 0.02-0.04%, Ti 0.02-0.04%, V0.02-0.1%, P0.01-0.02%, S0.01%, Mg 0.01-0.12%, and the balance of Fe.
Further, the paint comprises the following components in percentage by weight: c2%, Si 1.25-2%, Mn 1.5%, Cr 0.1-0.2%, Mo 0.3-0.35%, Ni 0.15-0.18%, Cu 0.02-0.04%, Ti 0.02-0.04%, V0.02-0.1%, P0.01-0.02%, S0.01%, Mg 0.01-0.12%, and the balance of Fe.
Preferably, the weight ratio of C, Ni is 2.5-3.5: 0.15-0.25.
The invention has the beneficial effects that: the invention has high hardness, good wear resistance and difficult fracture, the service life of resisting impact fatigue of 9 m high drop is more than 15000 times, parts manufactured by the austenite nodular cast iron are not easy to damage, and the production and manufacturing cost is greatly reduced.
Detailed Description
The following detailed description of the preferred embodiments of the invention is provided to enable those skilled in the art to better understand the advantages and features of the invention, and to clearly and unequivocally define the scope of the invention.
A casting process of nodular cast iron comprises the following components in percentage by weight: 2-3% of C, 1.25-2.25% of Si, 1.5-1.7% of Mn, 0.1-0.25% of Cr, 0.3-0.8% of Mo, 0.04-0.07% of Ni, 0.02-0.06% of Cu, 0.02-0.05% of Ti, 0.02-0.15% of V, 0.01-0.03% of P, 0.01-0.02% of S, 0.01-0.15% of Mg and the balance of Fe, wherein H is V/S +10, H is the modulus of the austenitic bar nodular cast iron, V is the volume of the austenitic bar nodular cast iron, S is the surface area of the austenitic bar nodular cast iron, the range of the modulus is more than 35 and less than or equal to H39, and the unit of the modulus is mm.
An embodiment comprises the following components in percentage by weight: c2%, Ni 0.1-0.15%, Si 1.25-2%, Mn 1.5%, Cr 0.1-0.2%, Mo 0.3-0.35%, Cu 0.02-0.04%, Ti 0.02-0.04%, V0.02-0.1%, P0.01-0.02%, S0.01%, Mg 0.01-0.12%, and Fe in balance.
In a second embodiment, the composition comprises the following components in percentage by weight: c2%, Ni 0.15-0.18%, Si 1.25-2%, Mn 1.5%, Cr 0.1-0.2%, Mo 0.3-0.35%, Cu 0.02-0.04%, Ti 0.02-0.04%, V0.02-0.1%, P0.01-0.02%, S0.01%, Mg 0.01-0.12%, and Fe in balance.
Further, the weight ratio of the C, Ni is 2.5-3.5: 0.15-0.25.
In all examples shown and described herein, any particular value should be construed as merely exemplary, and not as a limitation, and thus other examples of example embodiments may have different values.
Compared with the prior art, the invention has high hardness, good wear resistance and difficult fracture, the service life of resisting impact fatigue of 9 m high drop is more than 15000 times, parts manufactured by the austenite nodular cast iron are not easy to damage, and the production and manufacturing cost is greatly reduced.
Finally, it should be noted that: the above-mentioned embodiments are merely specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein.
Claims (5)
1. A casting process of nodular cast iron is characterized in that: comprises the following components in percentage by weight: 2 to 3 percent of C, 0.1 to 0.2 percent of Ni, 1.25 to 2.25 percent of Si, 1.5 to 1.7 percent of Mn, 0.1 to 0.25 percent of Cr, 0.3 to 0.8 percent of Mo, 0.02 to 0.06 percent of Cu, 0.02 to 0.05 percent of Ti, 0.02 to 0.15 percent of V, 0.01 to 0.03 percent of P, 0.01 to 0.02 percent of S, 0.01 to 0.15 percent of Mg, and the balance of Fe.
2. The casting process of nodular cast iron according to claim 1, wherein: h is V/S +10, H is the modulus of the austenite bar nodular cast iron, V is the volume of the austenite bar nodular cast iron, S is the surface area of the austenite bar nodular cast iron, the modulus is more than 35 and less than or equal to H and less than or equal to 39, and the unit of the modulus is mm.
3. The casting process of ductile iron according to claim 1, wherein: the paint comprises the following components in percentage by weight: c2%, Si 1.25-2%, Mn 1.5%, Cr 0.1-0.2%, Mo 0.3-0.35%, Ni 0.1-0.15%, Cu 0.02-0.04%, Ti 0.02-0.04%, V0.02-0.1%, P0.01-0.02%, S0.01%, Mg 0.01-0.12%, and the balance of Fe.
4. The casting process of ductile iron according to claim 1, wherein: the paint comprises the following components in percentage by weight: c2%, Si 1.25-2%, Mn 1.5%, Cr 0.1-0.2%, Mo 0.3-0.35%, Ni 0.15-0.18%, Cu 0.02-0.04%, Ti 0.02-0.04%, V0.02-0.1%, P0.01-0.02%, S0.01%, Mg 0.01-0.12%, and the balance of Fe.
5. The casting process of ductile iron according to claim 1, wherein: the weight ratio of C, Ni is 2.5-3.5: 0.15-0.25.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911237819.9A CN112921229A (en) | 2019-12-06 | 2019-12-06 | Casting process of nodular cast iron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911237819.9A CN112921229A (en) | 2019-12-06 | 2019-12-06 | Casting process of nodular cast iron |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112921229A true CN112921229A (en) | 2021-06-08 |
Family
ID=76161381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911237819.9A Pending CN112921229A (en) | 2019-12-06 | 2019-12-06 | Casting process of nodular cast iron |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112921229A (en) |
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2019
- 2019-12-06 CN CN201911237819.9A patent/CN112921229A/en active Pending
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20210608 |