CN1280204A - Cladding nodulizer for high toughness nodular cast iron alloy - Google Patents
Cladding nodulizer for high toughness nodular cast iron alloy Download PDFInfo
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- CN1280204A CN1280204A CN 00112455 CN00112455A CN1280204A CN 1280204 A CN1280204 A CN 1280204A CN 00112455 CN00112455 CN 00112455 CN 00112455 A CN00112455 A CN 00112455A CN 1280204 A CN1280204 A CN 1280204A
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- cast iron
- nodulizer
- cored
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- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
The nodulizer has the composition of: Mg 25-35 wt%, RE 2-10 wt%, Ca or Ca+Ba or Ca+Ba+Bi 2-12 wt% and Si 35-50 wt% except Fe. Through conventional smelting compounding process and crushing, the nodulizer is produced into grains of 3 mm below size and is wrapped by steel belt into wound wire. The nodulizer has stable and high nodulizing effect, low consumption and low use cost.
Description
The present invention relates to a kind of casting alloy additive, is a kind of high Mg content alloy claded wire type nodulizing agent of producing spheroidal graphite cast iron.
As-cast high-tenacity cast spheroidal graphite cast iron is a kind of the needs to have good performance through heat treated high-performance nodular iron casting.Therefore, also many to the research work of casting ferrite with nodular cast iron, such as when selecting the molten iron Chemical Composition, note selecting for use higher carbon equivalent, limit the content of manganese, phosphorus and sulphur etc.Japanese Patent (special permission JP59043843) has provided a kind of nodulizing agent that contains magnesium and rare earth, barium, and the nodulizing agent of this composition is applicable to the molten iron that impurity is less.Chinese patent CN91108271.9 (Nodularizing additive for casting high toughness nodular graphite cast iron) has done improvement on prescription, its nodularization is effective, but its consumption is higher, and the nodularization cost is higher.If the magnesium content height of nodulizing agent can reduce add-on and improve the nodularization effect.But because molten point, the boiling point of magnesium are low, when nodulizing agent added, a large amount of rapid gasifications of magnesium can aggravate the molten iron boiling on the contrary, reduced the specific absorption of magnesium, can not provide a safe and reliable use technology, and in fact nodularization effect is bad.
The objective of the invention is: design a kind of nodularization effect stability, the high magnesium type of use properties cast condition ductile iron good and that the nodulizing agent addition is few, use cost is low nodulizing agent.Purpose of the present invention especially provides a kind of high Mg content alloy claded wire type nodulizing agent, makes a kind of product of being convenient to add.
The object of the present invention is achieved like this: a kind of Nodularizing additive for casting high toughness nodular graphite cast iron, the composition (weight percentage) that it is characterized in that nodulizing agent is Mg25-35%, Re2-10%, Ca, (Ca+Ba) or (Ca+Ba+Bi) 2-12%, Si35-50%, all the other are iron.Nodulizing agent adopts conventional mix-melting method and makes the powder shape through fragmentation, and granularity is less than 3mm.The present invention especially makes the product of following structure: adopt the steel band winding up of thick 0.2-0.6mm to become the alloy claded wire of φ 8-20mm.
The present invention adopts the sheetmetal winding up to be convenient to order adding gradually, and the outburst severe degree that can slow down the Mg steam improves the specific absorption of Mg, thereby reduces add-on, reduces use cost.
Characteristics of the present invention are: the prescription with improving Mg content greatly can significantly improve nodularization stability, and the roundness of globular graphite is good; Add Re, Ca, (Ca+Ba) or (Ca+Ba+Bi), can realize purifying molten iron, promote greying, prolong the decaying spheroidisation time and promote effects such as ferritic transformation.Help improving the comprehensive mechanical performance of nodular iron casting, the amount of adding nodulizing agent is less, and cost is low, good in economic efficiency.And the sheetmetal winding up is adopted in invention, makes things convenient for the adding of nodulizing agent, can slow down the outburst severe degree of Mg, improves the specific absorption of Mg, thereby reduces add-on, reduces use cost.
Below the invention will be further described with reference to the accompanying drawings and by embodiment:
Fig. 1 is a structural section synoptic diagram of the present invention
Fig. 2, the 3rd, the metallograph of embodiment 1 (* 100) is respectively matrix and graphite form
Photo nodularization respond well as can be seen from figure.
As shown in Figure 1, adopt the steel band of thick 0.3-0.5mm or the cored-wire that other irony band 1 winding up becomes φ 8-20mm, embodiment selects the steel band of 0.3mm or the cored-wire that other irony band 1 winding up becomes φ 10mm for use, in inoculant alloy powder 2 of the present invention is arranged.Steel band 1 is provided with strengthening groove 3.Employing Re, Ca, (Ca+B) or complex element (Ca+Ba+Bi) add, but purifying molten iron promotes greying, effects such as the fall time of prolongation nodularization and promotion ferritic transformation.
Embodiment 1 prescription: Mg35%, Re8%, Ca, (Ca+Ba) or (Ca+Ba+Bi) 12%, Si45%,
Embodiment 3 prescription: Mg25%, Re2%, Ca, (Ca+Ba) or (Ca+Ba+Bi) 8%, Si35%,
Embodiment 4 prescription: Mg30%, Re6%, Ca, (Ca+Ba) or (Ca+Ba+Bi) 9%, Si40%,
Embodiment 5 prescription: Mg35%, Re2%, Ca, (Ca+Ba) or (Ca+Ba+Bi) 3%, Si50%,
Embodiment 6 prescription: Mg25%, Re10%, Ca, (Ca+Ba) or (Ca+Ba+Bi) 12%, Si40%, the alloy of making are the powder shape, size range 0-3mm.Below be the embodiment table: the alloy of making is the powder shape, size range 0-3mm.It below is the embodiment table.
| Nodulizing agent prescription (weight percentage) | The nodulizing agent add-on | Nodulizing process | Nodulizing grade | Nucleating agent | Ferrite content (%) | Tensile strength (N/mm 2) | Unit elongation (%) |
| Existing nodulizing agent Mg 8.12%, Re 4.88%, | 1．6％ | The dykes and dams |
2 | 75Si-Fe add-on 0.6% | 55 | ?521．0 | ?8．2 |
| Ca1.61%, Si40.38%, surplus Fe | |||||||
| The embodiment of the invention 1 | ?0．5％ | Cored-wire is fed the |
2 | 75Si-Fe add-on 0.6% | 95 | ?490．5 | ?23 |
| The embodiment of the |
?0．6％ | Cored-wire is fed the |
2 | 75Si-Fe add-on 0.6% | 95 | ?452．5 | ?24 |
| The embodiment of the invention 3 | ?0．7％ | Cored-wire is fed the |
2 | 75Si-Fe add-on 0.6% | 95 | ?490．0 | ?20 |
| The embodiment of the invention 4 | ?0．8％ | Cored-wire is fed the |
2 | 75Si-Fe add-on 0.6% | 92 | ?445．5 | ?22 |
| The embodiment of the invention 5 | ?0．85 ％ | Cored-wire is fed the |
2 | 75Si-Fe add-on 0.6% | 90 | ?449．5 | ?23 |
| The embodiment of the invention 6 | ?0．75 ％ | Cored-wire is fed the |
2 | 75Si-Fe add-on 0.6% | 95 | ?5 | ?22 |
Annotate the Chemical Composition (weight percentage) of molten iron in 1 table: C3.87-3.92%; Si2.52-2.55%; Mn0.16-0.20%; P0.038-0.040%; S0.021-0.026%.
Annotate 2 performance datas and all take from the test block of 25mmY type, measure under the as cast condition.
Claims (3)
1. Nodularizing additive for casting high toughness nodular graphite cast iron, the composition (weight percentage) that it is characterized in that nodulizing agent is Mg25-35%, Re2-10%, Ca or (Ca+Ba), (Ca+Ba+Bi) 2-12%, Si3550%, all the other are iron, nodulizing agent adopts conventional mix-melting method and makes the powder shape through fragmentation, powder shape granularity becomes cored-wire less than 3mm by the steel band winding up, and powder twists in the cored-wire.
2. by the described Nodularizing additive for casting high toughness nodular graphite cast iron of claim 1, it is characterized in that becoming cored-wire by the steel band winding up of 0.3-0.5mm, the cored-wire diameter is between 8-20mm.
3. by claim 1,2 described cladding nodulizer for high toughness nodular cast iron alloy, steel band (1) is provided with strengthening groove (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00112455 CN1103378C (en) | 2000-08-11 | 2000-08-11 | Cladding nodulizer for high toughness nodular cast iron alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00112455 CN1103378C (en) | 2000-08-11 | 2000-08-11 | Cladding nodulizer for high toughness nodular cast iron alloy |
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| Publication Number | Publication Date |
|---|---|
| CN1280204A true CN1280204A (en) | 2001-01-17 |
| CN1103378C CN1103378C (en) | 2003-03-19 |
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| CN 00112455 Expired - Fee Related CN1103378C (en) | 2000-08-11 | 2000-08-11 | Cladding nodulizer for high toughness nodular cast iron alloy |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102329915A (en) * | 2011-05-03 | 2012-01-25 | 首钢贵阳特殊钢有限责任公司 | Lead compound core spun yarn |
| CN102652967A (en) * | 2012-03-09 | 2012-09-05 | 山西银光华盛镁业股份有限公司 | Method for manufacturing high-magnesium-alloy solid cored wire |
| CN103014232A (en) * | 2013-01-09 | 2013-04-03 | 潍柴动力股份有限公司 | Clad wire for producing vermicular graphite cast iron through wire feeding technology and preparation method of vermicular graphite cast iron |
| CN106086302A (en) * | 2016-07-28 | 2016-11-09 | 上海大学 | Magnesium calcium rare earth alloy core-spun yarn of Ferrous Metallurgy and preparation method thereof |
| CN106086303A (en) * | 2016-07-28 | 2016-11-09 | 上海大学 | Magnesium calcium alloy core-spun yarn of Ferrous Metallurgy and preparation method thereof |
| CN109576432A (en) * | 2018-11-11 | 2019-04-05 | 三祥新材（宁夏）有限公司 | A kind of novel spheroidized core wire and preparation method |
| CN111020361A (en) * | 2019-12-31 | 2020-04-17 | 邢台戈兰厨具有限公司 | Nodular cast iron cooker and production method thereof |
| CN115820980A (en) * | 2022-12-20 | 2023-03-21 | 禹州市恒利来新材料股份有限公司 | Cored wire for high-red-hardness nodular cast iron and preparation method thereof |
-
2000
- 2000-08-11 CN CN 00112455 patent/CN1103378C/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102329915A (en) * | 2011-05-03 | 2012-01-25 | 首钢贵阳特殊钢有限责任公司 | Lead compound core spun yarn |
| CN102652967A (en) * | 2012-03-09 | 2012-09-05 | 山西银光华盛镁业股份有限公司 | Method for manufacturing high-magnesium-alloy solid cored wire |
| CN103014232A (en) * | 2013-01-09 | 2013-04-03 | 潍柴动力股份有限公司 | Clad wire for producing vermicular graphite cast iron through wire feeding technology and preparation method of vermicular graphite cast iron |
| CN103014232B (en) * | 2013-01-09 | 2016-01-06 | 潍柴动力股份有限公司 | A kind of injection feeding technology produces the preparation method of vermicular cast iron cored-wire and a kind of vermicular cast iron |
| CN106086302A (en) * | 2016-07-28 | 2016-11-09 | 上海大学 | Magnesium calcium rare earth alloy core-spun yarn of Ferrous Metallurgy and preparation method thereof |
| CN106086303A (en) * | 2016-07-28 | 2016-11-09 | 上海大学 | Magnesium calcium alloy core-spun yarn of Ferrous Metallurgy and preparation method thereof |
| CN109576432A (en) * | 2018-11-11 | 2019-04-05 | 三祥新材（宁夏）有限公司 | A kind of novel spheroidized core wire and preparation method |
| CN111020361A (en) * | 2019-12-31 | 2020-04-17 | 邢台戈兰厨具有限公司 | Nodular cast iron cooker and production method thereof |
| CN115820980A (en) * | 2022-12-20 | 2023-03-21 | 禹州市恒利来新材料股份有限公司 | Cored wire for high-red-hardness nodular cast iron and preparation method thereof |
| CN115820980B (en) * | 2022-12-20 | 2024-04-09 | 禹州市恒利来新材料股份有限公司 | Cored wire for high red hardness ductile iron and preparation method thereof |
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| Publication number | Publication date |
|---|---|
| CN1103378C (en) | 2003-03-19 |
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| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Wuxi Novel Special Metal Co., Ltd. Assignor: Zhu Yuming Contract fulfillment period: 2009.5.1 to 2019.5.1 contract change Contract record no.: 2009320000701 Denomination of invention: Cladding nodulizer for high toughness nodular cast iron alloy Granted publication date: 20030319 License type: Exclusive license Record date: 2009.4.29 |
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Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2009.5.1 TO 2019.5.1; CHANGE OF CONTRACT Name of requester: WUXI YONGXIN SPECIAL METALS CO., LTD. Effective date: 20090429 |
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Granted publication date: 20030319 Termination date: 20120811 |