CN111676416A - Austenitic vermicular cast iron material - Google Patents
Austenitic vermicular cast iron material Download PDFInfo
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- CN111676416A CN111676416A CN202010580627.4A CN202010580627A CN111676416A CN 111676416 A CN111676416 A CN 111676416A CN 202010580627 A CN202010580627 A CN 202010580627A CN 111676416 A CN111676416 A CN 111676416A
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- cast iron
- iron material
- austenitic
- vermicular cast
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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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- 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
- C21C1/08—Manufacture 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
- C22C37/08—Cast-iron alloys containing chromium with nickel
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- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
The invention discloses an austenitic vermicular cast iron material which comprises the following components in parts by mass: carbon: 2.2-3.0%, silicon: 2.0-3.1%, manganese: 0.5-1.5%, phosphorus: less than or equal to 0.08 percent, sulfur: less than or equal to 0.02 percent, chromium: 0.9-1.8%, nickel: 12-18%, copper: 4.8-8%, cerium: 0.01-0.03%, magnesium: 0.012-0.02% and the balance of iron. The austenitic vermicular cast iron material provided by the invention contains less magnesium element, and the wear resistance of the austenitic vermicular cast iron material can be greatly improved. Through the performance detection of the austenitic vermicular cast iron material, the vermicular cast iron material has the advantages of greatly improved vermicular rate, tensile strength and elongation compared with related performance parameters in the prior art, and the main reason is that the austenitic vermicular cast iron material provided by the invention is a mixture of spherical and vermicular cast iron materials, and has the advantages of high tensile strength of the spherical cast iron material and high vermicular cast iron material creep rate and elongation.
Description
Technical Field
The invention relates to the technical field of cast iron, in particular to an austenitic vermicular cast iron material.
Background
The piston is the 'heart' of an automobile engine, bears alternating mechanical and thermal loads, and is one of the most severe key parts in the engine under severe working conditions. One of the main factors affecting the service life of aluminum alloy pistons is the wear of the piston ring grooves, particularly the first ring groove.
In order to improve the wear resistance of the first ring groove of the aluminum piston, an embedded cast iron wear-resistant ring seat (an embedded ring) is generally adopted as an effective solution in the industry, the embedded ring piston not only keeps the light weight characteristic of the aluminum piston, but also has the advantage of wear resistance of the cast iron piston ring groove, so that the service life of the aluminum piston is greatly prolonged, and the embedded ring aluminum piston can be comprehensively popularized and applied.
Cast iron materials commonly used in production practice are mainly classified into three types according to the graphite shape: the gray cast iron is flaky, has poor mechanical property, good castability, shock absorption, antifriction notch sensitivity and good machinability; the nodular cast iron is spherical graphite and has high mechanical property; the vermicular graphite cast iron has vermicular graphite between the graphite and the graphite, has mechanical properties slightly lower than those of the vermicular graphite cast iron, and has better wear resistance and casting performance than the vermicular graphite cast iron, particularly good high and low temperature creep resistance.
The piston ring insert is made of austenitic cast iron materials generally, and the nickel-based austenitic gray cast iron materials are mostly adopted in the prior art, so that the wear resistance of the first ring groove of the piston can be effectively enhanced, and the service life of the piston is further prolonged. The piston insert is commonly used in high-performance engines at present. Along with the promotion of the national six standards, the temperature resistance and the pressure resistance of the conventional aluminum piston are remarkably improved, and the conventional nickel-based austenite gray cast iron insert ring has limited heat resistance and tensile strength, so that the assembly failure rate is greatly improved, and the requirements cannot be met.
Disclosure of Invention
In view of the above, there is a need to provide an austenitic vermicular cast iron material to partially solve the above technical problems.
Specifically, the austenitic vermicular cast iron material comprises the following components in percentage by mass:
carbon: 2.2-3.0%, silicon: 2.0-3.1%, manganese: 0.5-1.5%, phosphorus: less than or equal to 0.08 percent, sulfur: less than or equal to 0.02 percent, chromium: 0.9-1.8%, nickel: 12-18%, copper: 4.8-8%, cerium: 0.01 to 0.03%, magnesium: 0.012-0.02% and the balance of iron.
Preferably, the creep rate of the cast iron material is 65-85%.
Preferably, the cast iron material has a tensile strength of more than 380 MPa.
Preferably, the cast iron material is obtained by modification.
Preferably, the metamorphic treatment comprises sequential spheroidization and inoculation.
Preferably, the alloy used for spheroidizing comprises the following components in percentage by mass: rare earth: 6-6.8%, magnesium: 5.1-6.2%, calcium: 2.0-3.2%, aluminum: 0.4 to 0.8%, silicon: 40-50% and the balance of iron.
Preferably, the grain diameter of the alloy used for spheroidizing is 10-20 mm.
Preferably, the inoculation treatment uses an alloy comprising, in mass fraction: silicon: 68-76%, aluminum: 0.1-0.3%, strontium: 1.0-1.7%, calcium: 0.1-0.5%, and the balance of iron.
Preferably, the grain diameter of the alloy used for inoculation treatment is 1-7 mm.
Compared with the prior art, the austenitic vermicular cast iron material provided by the invention has the following beneficial effects:
the austenitic vermicular cast iron material provided by the invention contains less magnesium element, and the wear resistance of the austenitic vermicular cast iron material can be greatly improved.
Through the performance detection of the austenitic vermicular cast iron material, the vermicular cast iron material has the advantages of greatly improved vermicular rate, tensile strength and elongation compared with related performance parameters in the prior art, and the main reason is that the austenitic vermicular cast iron material provided by the invention is a mixture of spherical and vermicular cast iron materials, and has the advantages of high tensile strength of the spherical cast iron material and high vermicular cast iron material creep rate and elongation.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a scanning electron microscope picture of an austenitic vermicular cast iron material provided by the invention.
Detailed Description
The present invention will be further described with reference to the following examples. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides an austenitic vermicular cast iron material which has a flaky and spherical mixed structure and has the common advantages of a flaky structure and a spherical structure, so that the austenitic vermicular cast iron material can meet the requirements of a high-performance engine.
The cast iron material comprises the following components in parts by mass: carbon: 2.2-3.0%, silicon: 2.0-3.1%, manganese: 0.5-1.5%, phosphorus: less than or equal to 0.08 percent, sulfur: less than or equal to 0.02 percent, chromium: 0.9-1.8%, nickel: 12-18%, copper: 4.8-8%, cerium: 0.01-0.03%, magnesium: 0.012-0.02% and the rest is iron.
Further, the cast iron material is obtained through modification treatment, wherein the modification treatment comprises sequential spheroidization treatment and inoculation treatment.
The alloy used for spheroidizing comprises the following components in percentage by mass: rare earth: 6-6.8%, magnesium: 5.1-6.2%, calcium: 2.0-3.2%, aluminum: 0.4 to 0.8%, silicon: 40-50% and the balance of iron.
In a specific embodiment, the alloy used for spheroidizing has the composition ratios as shown in table 1 below:
table 1: the proportion of each component of the alloy used for spheroidizing
The grain diameter of the alloy used for spheroidizing is 10-20 mm.
The inoculation treatment uses an alloy which comprises the following components in percentage by mass: silicon: 68-76%, aluminum: 0.1-0.3%, strontium: 1.0-1.7%, calcium: 0.1-0.5%, and the balance of iron.
In a particular embodiment, the inoculation treatment uses alloys with the ratios of the components as described in table 2 below:
table 2: the proportion of each component of the alloy used for inoculation treatment
The grain size of the alloy used for inoculation is 1-7 mm.
In a particular embodiment, the respective component ratios of the austenitic vermicular cast iron material are as shown in table 3 below:
table 3: the proportions of the components of the austenitic vermicular cast iron material
The austenitic vermicular cast iron material provided by the invention contains less magnesium element, and the wear resistance of the austenitic vermicular cast iron material can be greatly improved.
Referring to fig. 1, fig. 1 is a scanning electron microscope picture of the austenitic vermicular cast iron material provided by the present invention, and it can be seen from the picture that the austenitic vermicular cast iron material provided by the present invention is a mixture of spherical and vermicular shapes.
The austenitic vermicular cast iron materials in each of the examples in table 3 were subjected to performance tests including creep rate, tensile strength and elongation, each of which is specified in table 4.
Table 4: the proportions of the components of the austenitic vermicular cast iron material
Through the performance detection of the austenitic vermicular cast iron material, the vermicular cast iron material has the advantages of greatly improved vermicular rate, tensile strength and elongation compared with related performance parameters in the prior art, and the main reason is that the austenitic vermicular cast iron material provided by the invention is a mixture of spherical and vermicular cast iron materials, and has the advantages of high tensile strength of the spherical cast iron material and high vermicular cast iron material creep rate and elongation.
Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.
Claims (9)
1. An austenitic vermicular cast iron material, characterized in that: the cast iron material comprises the following components in parts by mass:
carbon: 2.2-3.0%, silicon: 2.0-3.1%, manganese: 0.5-1.5%, phosphorus: less than or equal to 0.08 percent, sulfur: less than or equal to 0.02 percent, chromium: 0.9-1.8%, nickel: 12-18%, copper: 4.8-8%, cerium: 0.01-0.03%, magnesium: 0.012-0.02% and the balance of iron.
2. The austenitic vermicular cast iron material of claim 1, wherein:
the creep rate of the cast iron material is 65-85%.
3. The austenitic vermicular cast iron material of claim 2, wherein:
the tensile strength of the cast iron material is more than 380 MPa.
4. The austenitic vermicular cast iron material of claim 3, wherein:
the cast iron material is obtained by modification treatment.
5. The austenitic vermicular cast iron material of claim 4, wherein:
the modification treatment comprises spheroidization and inoculation in sequence.
6. The austenitic vermicular cast iron material of claim 5, wherein:
the alloy used for spheroidizing comprises the following components in percentage by mass: rare earth: 6-6.8%, magnesium: 5.1-6.2%, calcium: 2.0-3.2%, aluminum: 0.4 to 0.8%, silicon: 40-50% and the balance of iron.
7. The austenitic vermicular cast iron material of claim 6, wherein:
the grain diameter of the alloy used for spheroidizing is 10-20 mm.
8. The austenitic vermicular cast iron material of claim 5, wherein:
the inoculation treatment uses an alloy which comprises the following components in percentage by mass: silicon: 68-76%, aluminum: 0.1-0.3%, strontium: 1.0-1.7%, calcium: 0.1-0.5%, and the balance of iron.
9. The austenitic vermicular cast iron material of claim 8, wherein:
the grain size of the alloy used for inoculation is 1-7 mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010580627.4A CN111676416A (en) | 2020-06-23 | 2020-06-23 | Austenitic vermicular cast iron material |
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| CN202010580627.4A CN111676416A (en) | 2020-06-23 | 2020-06-23 | Austenitic vermicular cast iron material |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003045626A2 (en) * | 2001-11-27 | 2003-06-05 | Tupy Fundições Ltda. | Graphitic cast iron of high mechanical strength |
| WO2009028976A1 (en) * | 2007-08-28 | 2009-03-05 | Alexey Gennadyevich Panov | Resistant to growth cast iron |
| CN102796939A (en) * | 2012-08-29 | 2012-11-28 | 丹阳市锦雄机械制造有限公司 | Method for vermicular cast iron by using mixed vermiculizer |
| CN104120332A (en) * | 2014-07-31 | 2014-10-29 | 大连金州茂隆实业有限公司 | High-strength high-toughness ductile cast iron 600-10 and production method thereof |
| CN104532118A (en) * | 2015-01-28 | 2015-04-22 | 滨州市正道机械制造有限公司 | Special high-performance high-nickel austenite vermicular cast iron for piston mounting rings and preparation method thereof |
| CN105401064A (en) * | 2015-11-28 | 2016-03-16 | 西峡县西泵特种铸造有限公司 | Medium silicon molybdenum nodular cast iron and production method thereof |
| CN105568123A (en) * | 2015-12-21 | 2016-05-11 | 青特集团有限公司 | Manufacturing method of vermicular graphite cast-iron brake drum |
| CN106636523A (en) * | 2016-09-27 | 2017-05-10 | 宝鸡市晨瑞鑫铸造有限责任公司 | Method for preparing nodular cast iron through full scrap steel |
| CN109536664A (en) * | 2018-12-05 | 2019-03-29 | 苏州勤美达精密机械有限公司 | A kind of myrmekite ink cast iron scroll plate and its production technology |
-
2020
- 2020-06-23 CN CN202010580627.4A patent/CN111676416A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003045626A2 (en) * | 2001-11-27 | 2003-06-05 | Tupy Fundições Ltda. | Graphitic cast iron of high mechanical strength |
| WO2009028976A1 (en) * | 2007-08-28 | 2009-03-05 | Alexey Gennadyevich Panov | Resistant to growth cast iron |
| CN102796939A (en) * | 2012-08-29 | 2012-11-28 | 丹阳市锦雄机械制造有限公司 | Method for vermicular cast iron by using mixed vermiculizer |
| CN104120332A (en) * | 2014-07-31 | 2014-10-29 | 大连金州茂隆实业有限公司 | High-strength high-toughness ductile cast iron 600-10 and production method thereof |
| CN104532118A (en) * | 2015-01-28 | 2015-04-22 | 滨州市正道机械制造有限公司 | Special high-performance high-nickel austenite vermicular cast iron for piston mounting rings and preparation method thereof |
| CN105401064A (en) * | 2015-11-28 | 2016-03-16 | 西峡县西泵特种铸造有限公司 | Medium silicon molybdenum nodular cast iron and production method thereof |
| CN105568123A (en) * | 2015-12-21 | 2016-05-11 | 青特集团有限公司 | Manufacturing method of vermicular graphite cast-iron brake drum |
| CN106636523A (en) * | 2016-09-27 | 2017-05-10 | 宝鸡市晨瑞鑫铸造有限责任公司 | Method for preparing nodular cast iron through full scrap steel |
| CN109536664A (en) * | 2018-12-05 | 2019-03-29 | 苏州勤美达精密机械有限公司 | A kind of myrmekite ink cast iron scroll plate and its production technology |
Non-Patent Citations (1)
| Title |
|---|
| 张国志 等: "电磁场对铸铁石墨生长的影响", 《东北大学学报(自然科学版)》 * |
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Application publication date: 20200918 |