CN108103260A - Core-spun yarn and preparation method thereof is bred in modification - Google Patents
Core-spun yarn and preparation method thereof is bred in modification Download PDFInfo
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- CN108103260A CN108103260A CN201711457901.3A CN201711457901A CN108103260A CN 108103260 A CN108103260 A CN 108103260A CN 201711457901 A CN201711457901 A CN 201711457901A CN 108103260 A CN108103260 A CN 108103260A
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- core
- spun yarn
- silicon carbide
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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
- C21C1/105—Nodularising additive agents
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Abstract
The invention belongs to material chemistry technical fields, and in particular to core-spun yarn and preparation method thereof is bred in a kind of modification；Include the raw material of following mass fraction：Breed 60 90wt% of core-spun yarn, 10 20wt% of micrometer silicon carbide silicon, 2 10wt% of nanometer silicon carbide；Core-spun yarn is bred in modification provided by the invention, can increase number of nuclei, optimizes nodularization process, improves the mechanical property of casting.
Description
Technical field
The invention belongs to material chemistry technical fields, and in particular to core-spun yarn and preparation method thereof is bred in a kind of modification.
Background technology
In industrial circles such as cement, mine, thermal power generation, common crushing plant needs resistance to using the high chromium system of wearability
Grind material.In recent years, due to the reduction of strategic resource, the cost of material rising all the way in relation to high carbon ferro-chrome improves manufacture enterprise
The production cost of industry.For enterprise's drop is helped originally to put forward effect, the research and development in relation to non-chromium or few chromium system wear-resistant material are imperative.Containing carbonization
Object austempering ductile iron (abbreviation CADI) is by a kind of derivative new magnesium iron of austempering ductile iron (abbreviation ADI)
Material, metallographic microstructure are：Acicular ferrite+retained austenite+graphite nodule+carbide, Rockwell Hardness and rich chromium cast iron
Quite, it is a kind of good wear engineering material that there is wide application prospect, be expected to substitute high carbon ferro-chrome.However, for thickness
For big cross section ball milling casting of the degree more than 100mm, in casting process, since casting center portion cooling velocity is slow, crystallization time
It is long, thus often it is present with the decaying spheroidisation generated due to abnormal nodularizing, phenomena such as graphite nodule is grown up, the number of graphite is reduced,
The comprehensive mechanical performance of finished product CADI is reduced, impact toughness is especially reduction of, is susceptible to problem of brittle fracture, seriously affect
To the application of CADI major diameter cast balls.
The content of the invention
The primary and foremost purpose of the present invention is that providing a kind of modification breeds core-spun yarn, can increase number of nuclei, optimizes nodularization
Journey improves the mechanical property of casting.
To achieve the above object, the technical solution adopted by the present invention is：Core-spun yarn is bred in a kind of modification, including following quality
The raw material of fraction：Breed core-spun yarn 60-90wt%, micrometer silicon carbide silicon 10-20wt%, nanometer silicon carbide 2-10wt%.
The advantageous effect of above-mentioned technical proposal is：Nanometer silicon carbide belongs to 1-dimention nano grade material, and crystal structure is
Cubic structure, the metallographic structure in spheroidal graphite cast-iron is mainly ferrite and austenite, and the two is cubic structure.It can be seen that
The lattice match of nanometer silicon carbide and spheroidal graphite cast-iron is high, and nanometer silicon carbide is easy to fuse into spheroidal graphite cast-iron.Nanometer silicon carbide has
There is a high-melting-point, high rigidity, the characteristics of surface-active is big, after being fused to spheroidal graphite cast-iron the second mutually heterogeneous core point can be used as to exist, increased
Nucleating center in hot metal charging process of setting, so as to crystal grain thinning.According to the Hall-Petch relations of metal Brittle Fracture Stress, we
Know, the square root of yield strength and the crystallite dimension inverse of material is directly proportional.Therefore, crystal grain refinement can improve the strong of material
Degree, and material plasticity and toughness can be improved, while can also significantly improve other mechanical properties.In this way, it can effectively solve big cross section
The center portion decaying spheroidisation problem of spheroidal graphite casting improves the mechanical performance of spheroidal graphite cast-iron.
Micrometer silicon carbide silicon can further increase the effect of nanometer silicon carbide, and the two uses simultaneously, can increase and receive
Rice carborundum is the same as the combination stability and mixing uniformity for breeding core-spun yarn.In addition, control can be played using micrometer silicon carbide silicon
The effect of cost.
It is easy to use that core-spun yarn is bred in modification provided by the invention, effect stability, is suitble to large-scale promotion.
The performance with comparison product of nodularization core-spun yarn, micrometer silicon carbide silicon and nanometer silicon carbide is affected, particularly micro-
Easily there is lamination in product when the materials ratio of rice carborundum and nanometer silicon carbide is excessive, then cannot fully be sent out when ratio is too small
Wave the effect of nanometer silicon carbide.Applicant has found by substantial amounts of experiment, preferably, the proportioning of core-spun yarn is bred in the modification
When following：Breed core-spun yarn 80wt%, micrometer silicon carbide silicon 14wt%, nanometer silicon carbide 6wt%, the properties of product of acquisition are best.
Preferably, it is described breed core-spun yarn be selected from the trade mark for YX-CaBa3, YX-CaBa5, YX-Ca1Ba3, YX-Ca1Ba8,
Any one in YX-Ca2Ba3, YX-Ca2Ba5, YX-Ca2Ba6, YX-Ca3Ba3, YX-Ca3Ba5.
It should be noted that above-mentioned breed the commercial product that core-spun yarn is the production of Heng Lilai alloys Co., Ltd, respectively
The chemical composition of the trade mark is as shown in the table：
Preferably, the grain size for breeding core-spun yarn is 10mm-15mm.
The grain size of nanometer silicon carbide is very big on the performance influence of product, preferably, purity >=97% of nanometer silicon carbide,
Grain size is 40-60nm, and in the particle size range, the even particle distribution of nanometer silicon carbide spontaneous can fill up matrix crystalline substance
The defects of body forms equally distributed Hard Inclusion, hinders translation gliding and abrasion, improves the intensity, hardness and toughness of material.
Foregoing micrometer silicon carbide silicon and the city that nanometer silicon carbide is Hefei Kaier Nano Energy Source Science Co., Ltd's production
Sell product.
It is another object of the present invention to provide the preparation method that core-spun yarn is bred in a kind of modification as described above, including such as
Lower step：
(1) breed core-spun yarn and micrometer silicon carbide silicon to be uniformly mixed in three-dimensional material mixer, obtain batch mixing A；
(2) nanometer silicon carbide is added in into batch mixing A, is uniformly mixed, obtains mixed material B；
(3) modification is made in mixed material B using core cabling wire machine and breeds core-spun yarn.
Nanometer silicon carbide and the grain size difference for breeding core-spun yarn are larger, when the two directly mixes, with reference to not firm, stability
Difference, mixing is uneven, can not ensure the performance of product.The present invention is first by the smaller micrometer silicon carbide silicon of grain size phase margin and pregnant
Core-spun yarn mixing is educated, obtains batch mixing A, then nanometer silicon carbide and batch mixing A are mixed, the combination of nanometer silicon carbide and nodulizer can be made
It is more firm, and ensure to be evenly distributed, core-spun yarn mixability height is bred in modification obtained.It in use, will using common wire feeder
Modification is bred core-spun yarn and is added in the molten iron of melting, and nanometer silicon carbide is uniformly dispersed in molten iron and come, and is formed uniform
Nucleating center, the carbon to dissociate afterwards in molten iron is gradually adhered to form graphite nodule in the core, after solidification, first, and graphite nodule
The bodily form is complete, mellow and full, and graphite nodule grain size is thinner, and quantity is more, and declines are isolated to matrix；Second, size of graphite ball, with
And the uniform spatial distribution in casting；Carbide-containing austempering ductile iron good mechanical performance obtained, the machine with steel
Tool performance is suitable.
Preferably, the mixing temperature in the step (1) and (2) is room temperature.
Description of the drawings
Fig. 1 is the metallurgical structure figure of sample 1 in Application Example；
Fig. 2 is the metallurgical structure figure of sample 2 in comparative example.
Specific embodiment
1-9 is further described technical solution disclosed by the invention with reference to embodiments.It is pregnant in following embodiment
The grain size of core-spun yarn is educated for 13mm, purity >=97% of nanometer silicon carbide, grain size 40-60nm.
Embodiment 1：The modified preparation for breeding core-spun yarn
(1) weigh the trade mark and breed core-spun yarn 8kg for YX-CaBa3, at normal temperatures, this is bred into core-spun yarn and 1.4kg is micro-
Rice carborundum mixed in SYH type three-dimensional material mixers 3-5 it is small when, obtain batch mixing A；
(2) at normal temperatures, 600g nanometer silicon carbides are added in into batch mixing A, when startup three-dimensional material mixer mixing 3-5 is small, are obtained
To mixed material B；
(3) core-spun yarn is bred in the modification that mixed material B is made to a diameter of 13mm using GBX-6 (A) type core-spun yarn unit.
Embodiment 2：The modified preparation for breeding core-spun yarn
Method with embodiment 1, the difference is that, bred in step (1) core-spun yarn the trade mark be YX-CaBa5；Raw material is used
It measures and is：Breed core-spun yarn 8kg, micrometer silicon carbide silicon 1.4kg, nanometer silicon carbide 0.6kg.
Embodiment 3：The modified preparation for breeding core-spun yarn
Method with embodiment 1, the difference is that, bred in step (1) core-spun yarn the trade mark be YX-Ca1Ba3；Raw material
Dosage is：Breed core-spun yarn 8kg, micrometer silicon carbide silicon 1.4kg, nanometer silicon carbide 0.6kg.
Embodiment 4：The modified preparation for breeding core-spun yarn
Method with embodiment 1, the difference is that, bred in step (1) core-spun yarn the trade mark be YX-Ca1Ba8；Raw material
Dosage is：Breed core-spun yarn 8kg, micrometer silicon carbide silicon 1.4kg, nanometer silicon carbide 0.6kg.
Embodiment 5：The modified preparation for breeding core-spun yarn
Method with embodiment 1, the difference is that, bred in step (1) core-spun yarn the trade mark be YX-Ca2Ba3；Raw material
Dosage is：Breed core-spun yarn 8kg, micrometer silicon carbide silicon 1.4kg, nanometer silicon carbide 0.6kg.
Embodiment 6：The modified preparation for breeding core-spun yarn
Method with embodiment 1, the difference is that, bred in step (1) core-spun yarn the trade mark be YX-Ca2Ba5；Raw material
Dosage is：Breed core-spun yarn 8kg, micrometer silicon carbide silicon 1.4kg, nanometer silicon carbide 0.6kg.
Embodiment 7：The modified preparation for breeding core-spun yarn
Method with embodiment 1, the difference is that, bred in step (1) core-spun yarn the trade mark be YX-Ca2Ba6；Raw material
Dosage is：Breed core-spun yarn 8kg, micrometer silicon carbide silicon 1.4kg, nanometer silicon carbide 0.6kg.
Embodiment 8：The modified preparation for breeding core-spun yarn
Method with embodiment 1, the difference is that, bred in step (1) core-spun yarn the trade mark be YX-Ca3Ba3；Raw material
Dosage is：Breed core-spun yarn 8kg, micrometer silicon carbide silicon 1.4kg, nanometer silicon carbide 0.6kg.
Embodiment 9：The modified preparation for breeding core-spun yarn
Method with embodiment 1, the difference is that, bred in step (1) core-spun yarn the trade mark be YX-Ca3Ba5；Raw material
Dosage is：Breed core-spun yarn 8kg, micrometer silicon carbide silicon 1.4kg, nanometer silicon carbide 0.6kg.
Application Example：
The modification that embodiment 1 is prepared is inserted into the spheroidal graphite cast-iron water for smelting qualification breed core-spun yarn using wire feeder
Inoculation is carried out, sample 1 is obtained after molten steel solidification.The chemical composition (mass percent, %) such as 1 institute of table of the spheroidal graphite cast-iron
Show：
Table 1：
Comparative example：
The core-spun yarn that breeds that the trade mark is YX-CaBa3 is inserted using wire feeder into the spheroidal graphite cast-iron water for smelting qualification to carry out
Inoculation, after molten steel solidification sample 2.The same Application Example of chemical composition of the spheroidal graphite cast-iron.
The performance test results：
Sample 1 and sample 2 are detected respectively, as a result as shown in tables 2 and 3：
Table 2：
Table 3：
The metallurgical structure figure of sample 1 and sample 2 is as shown in figure 1 and 2.
From table 2 and 3, attached Fig. 1 and 2 is understood：For more commonly breeding core-spun yarn, bag is bred using modification provided by the invention
After cored wire carries out inoculation to spheroidal graphite cast-iron, cast(ing) surface and the graphite nodule grain size of center portion can be more refined, improves number of graphite ball
And Oxygen potential.Preferably make that is, modification provided by the invention breeds core-spun yarn and more commonly breeds to have for core-spun yarn
Use effect.
Claims (8)
1. core-spun yarn is bred in a kind of modification, which is characterized in that includes the raw material of following mass fraction：Breed core-spun yarn 60-
90wt%, micrometer silicon carbide silicon 10-20wt%, nanometer silicon carbide 2-10wt%.
2. core-spun yarn is bred in modification according to claim 1, which is characterized in that includes the raw material of following mass fraction：It is pregnant
Educate core-spun yarn 75-85wt%, micrometer silicon carbide silicon 10-15wt%, nanometer silicon carbide 5-10wt%.
3. core-spun yarn is bred in modification according to claim 1, which is characterized in that includes the raw material of following mass fraction：It is pregnant
Educate core-spun yarn 80wt%, micrometer silicon carbide silicon 14wt%, nanometer silicon carbide 6wt%.
4. core-spun yarn is bred in modification according to claim 1, which is characterized in that the core-spun yarn that breeds is selected from the trade mark
YX-CaBa3、YX-CaBa5、YX-Ca1Ba3、YX-Ca1Ba8、YX-Ca2Ba3、YX-Ca2Ba5、YX-Ca2Ba6、YX-
Any one in Ca3Ba3, YX-Ca3Ba5.
5. core-spun yarn is bred in modification according to claim 1, which is characterized in that it is described breed core-spun yarn grain size be
10mm-15mm。
6. core-spun yarn is bred in modification according to claim 1, which is characterized in that the purity of the nanometer silicon carbide >=
97%, grain size 40-60nm.
7. the preparation method of core-spun yarn is bred in a kind of modification according to any one of claim 1-6, which is characterized in that bag
Include following steps：
(1) breed core-spun yarn and micrometer silicon carbide silicon to be uniformly mixed in three-dimensional material mixer, obtain batch mixing A；
(2) nanometer silicon carbide is added in into batch mixing A, is uniformly mixed, obtains mixed material B；
(3) modification is made in mixed material B using core cabling wire machine and breeds core-spun yarn.
8. the preparation method of core-spun yarn is bred in modification according to claim 7, which is characterized in that the step (1) and (2)
In mixing temperature be room temperature.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711457901.3A CN108103260A (en) | 2017-12-28 | 2017-12-28 | Core-spun yarn and preparation method thereof is bred in modification |
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| CN201711457901.3A CN108103260A (en) | 2017-12-28 | 2017-12-28 | Core-spun yarn and preparation method thereof is bred in modification |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107267704A (en) * | 2017-07-03 | 2017-10-20 | 哈尔滨科德威冶金股份有限公司 | Spheroidal graphite cast-iron and vermicular cast iron inovulant and preparation method containing nanometer silicon carbide |
| CN109825662A (en) * | 2018-12-20 | 2019-05-31 | 宁国市华丰耐磨材料有限公司 | A kind of big specification Austria iron body spheroidal graphite cast-iron technique |
| CN111910121A (en) * | 2020-09-02 | 2020-11-10 | 宁国市华丰耐磨材料有限公司 | High-hardness ausferrite cast iron lining plate based on 3D printing modeling and preparation method |
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| CN107267704A (en) * | 2017-07-03 | 2017-10-20 | 哈尔滨科德威冶金股份有限公司 | Spheroidal graphite cast-iron and vermicular cast iron inovulant and preparation method containing nanometer silicon carbide |
| CN107262683A (en) * | 2017-06-30 | 2017-10-20 | 马鞍山市兴隆铸造有限公司 | A kind of production method of high-strength thin-walled castings of gray cast iron inovulant |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105316563A (en) * | 2015-10-29 | 2016-02-10 | 宁波康发铸造有限公司 | Inoculants, preparation method thereof and application in smelting of nodular cast iron |
| CN107262683A (en) * | 2017-06-30 | 2017-10-20 | 马鞍山市兴隆铸造有限公司 | A kind of production method of high-strength thin-walled castings of gray cast iron inovulant |
| CN107267704A (en) * | 2017-07-03 | 2017-10-20 | 哈尔滨科德威冶金股份有限公司 | Spheroidal graphite cast-iron and vermicular cast iron inovulant and preparation method containing nanometer silicon carbide |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107267704A (en) * | 2017-07-03 | 2017-10-20 | 哈尔滨科德威冶金股份有限公司 | Spheroidal graphite cast-iron and vermicular cast iron inovulant and preparation method containing nanometer silicon carbide |
| CN107267704B (en) * | 2017-07-03 | 2023-03-24 | 哈尔滨科德威冶金股份有限公司 | Inoculant containing nano silicon carbide for nodular cast iron and vermicular cast iron and preparation method thereof |
| CN109825662A (en) * | 2018-12-20 | 2019-05-31 | 宁国市华丰耐磨材料有限公司 | A kind of big specification Austria iron body spheroidal graphite cast-iron technique |
| CN111910121A (en) * | 2020-09-02 | 2020-11-10 | 宁国市华丰耐磨材料有限公司 | High-hardness ausferrite cast iron lining plate based on 3D printing modeling and preparation method |
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Application publication date: 20180601 |