CN108148940A - Modified nodularization core-spun yarn and preparation method thereof - Google Patents
Modified nodularization core-spun yarn and preparation method thereof Download PDFInfo
- Publication number
- CN108148940A CN108148940A CN201711456947.3A CN201711456947A CN108148940A CN 108148940 A CN108148940 A CN 108148940A CN 201711456947 A CN201711456947 A CN 201711456947A CN 108148940 A CN108148940 A CN 108148940A
- Authority
- CN
- China
- Prior art keywords
- spun yarn
- core
- silicon carbide
- nodularization
- modified
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C35/00—Master alloys for iron or steel
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
Abstract
The invention belongs to material chemistry technical fields, and in particular to a kind of modified nodularization core-spun yarn and preparation method thereof；Include the raw material of following mass fraction：60 90wt% of nodularization core-spun yarn, 10 20wt% of micrometer silicon carbide silicon, 2 10wt% of nanometer silicon carbide；Modified nodularization core-spun yarn provided by the invention and preparation method thereof can increase the number of nuclei of CADI, optimize nodularization process.
Description
Technical field
The invention belongs to material chemistry technical fields, and in particular to a kind of modified nodularization core-spun yarn and preparation method thereof.
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 novel 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 will appear 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.
Invention content
The present invention primary and foremost purpose be to provide a kind of modified nodularization core-spun yarn, forming core number during casting nodularization can be increased
Amount optimizes nodularization process, improves the comprehensive mechanical performance of casting.
To achieve the above object, the technical solution adopted by the present invention is：A kind of modified nodularization core-spun yarn, including following quality
The raw material of score：Nodularization 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, the second mutually heterogeneous core point can be used as to exist after being fused to spheroidal graphite cast-iron, increased
Nucleating center in hot metal charging process of setting, so as to crystal grain thinning.According to the Hall-Petch relationships 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 center portion mechanical performance of spheroidal graphite cast-iron, can improve spheroidal graphite casting on the whole
The mechanical performance of iron.
Micrometer silicon carbide silicon can further increase the function and effect of nanometer silicon carbide, and the two uses simultaneously, can increase and receive
Rice silicon carbide is the same as the combination stability and mixing uniformity of nodularization core-spun yarn.In addition, control can be played using micrometer silicon carbide silicon
The effect of cost.
Modified nodularization core-spun yarn provided by the invention and preparation method thereof is easy to use, and application performance is good, is suitble to extensive
It promotes.
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 silicon carbide 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 a large amount of experiment, preferably, the modified nodularization core-spun yarn and its system
When Preparation Method includes the raw material of following mass fraction：Nodularization core-spun yarn 80wt%, micrometer silicon carbide silicon 14wt%, nanometer silicon carbide
6wt%, properties of product are best.
Preferably, it selected from the trade mark is QX-Mg22RE, QX- that the nodularization core-spun yarn, which selected from the trade mark is the nodularization core-spun yarn,
Mg22RE2、QX-Mg24RE、QX-Mg24RE2、QX-Mg26RE、QX-Mg26RE2、QX-Mg26RE3、QX-Mg28RE、QX-
Any one in Mg28RE2, QX-Mg28RE3, QX-Mg30RE, QX-Mg30RE2, QX-Mg30RE3.
It should be noted that above-mentioned nodularization core-spun yarn is the commercial product of Heng Lilai alloys Co., Ltd production, respectively
The chemical composition of the trade mark is as shown in the table：
Preferably, the grain size of the nodularization 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.
Preferably, the purity of micrometer silicon carbide silicon >=, grain size um.
Aforementioned 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 a kind of preparation method of modified nodularization core-spun yarn as described above, including such as
Lower step：
(1) nodularization core-spun yarn and micrometer silicon carbide silicon are 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) modified nodularization core-spun yarn is made in mixed material B using core cabling wire machine.
The grain size of nanometer silicon carbide and nodularization core-spun yarn difference is 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 ball
Change core-spun yarn mixing, obtain batch mixing A, then nanometer silicon carbide and batch mixing A are mixed, nanometer silicon carbide and nodularization core-spun yarn can be made
With reference to more firm, and ensure to be evenly distributed, modified nodularization core-spun yarn obtained and preparation method thereof mixability is high.In use,
Nanometer silicon carbide in modified nodularization core-spun yarn and preparation method thereof is uniformly dispersed in molten iron in come, and forms uniform forming core
Center, the carbon to dissociate in molten iron later is gradually adhered to form graphite nodule in the core, after solidification, first, and the graphite nodule bodily form
Completely, mellow and full, graphite nodule grain size is thinner, and quantity is more, and declines are isolated to matrix；Second, size of graphite ball, Yi Ji
Uniform spatial distribution in casting；Carbide-containing austempering ductile iron good mechanical performance obtained, the mechanicalness with steel
It can be quite.
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
1-13 is further described technical solution disclosed by the invention with reference to embodiments.In following embodiment,
The grain size of nodularization core-spun yarn be 13mm, purity >=97% of nanometer silicon carbide, grain size 40-60nm.
Embodiment 1：The preparation of modified nodularization core-spun yarn
(1) weigh the nodularization core-spun yarn powder 8kg that the trade mark is QX-Mg22RE, at normal temperatures, by the nodularization core-spun yarn and
1.4kg micrometer silicon carbides silicon mixes 3-5 hours in SYH type three-dimensional material mixers, obtains batch mixing A；
(2) at normal temperatures, 600g nanometer silicon carbides are added in into batch mixing A, starts three-dimensional material mixer mixing 3-5 hours, obtains
To mixed material B；
(3) mixed material B is made to the modification nodularization core-spun yarn of a diameter of 13mm using GBX-6 (A) type core-spun yarn unit.
Embodiment 2：The preparation of modified nodularization core-spun yarn
Method is with embodiment 1, and the difference lies in the trade mark of nodularization core-spun yarn is QX-Mg22RE2 in step (1)；Raw material
Dosage is：Nodularization core-spun yarn 8kg, micrometer silicon carbide silicon 1.4kg, nanometer silicon carbide 0.6kg.
Embodiment 3：The preparation of modified nodularization core-spun yarn
Method is with embodiment 1, and the difference lies in the trade mark of nodularization core-spun yarn is QX-Mg24RE in step (1)；Raw material
Dosage is：Nodularization core-spun yarn 8kg, micrometer silicon carbide silicon 1.4kg, nanometer silicon carbide 0.6kg.
Embodiment 4：The preparation of modified nodularization core-spun yarn
Method is with embodiment 1, and the difference lies in the trade mark of nodularization core-spun yarn is QX-Mg24RE2 in step (1)；Raw material
Dosage is：Nodularization core-spun yarn 8kg, micrometer silicon carbide silicon 1.4kg, nanometer silicon carbide 0.6kg.
Embodiment 5：The preparation of modified nodularization core-spun yarn
Method is with embodiment 1, and the difference lies in the trade mark of nodularization core-spun yarn is QX-Mg26RE in step (1)；Raw material
Dosage is：Nodularization core-spun yarn 8kg, micrometer silicon carbide silicon 1.4kg, nanometer silicon carbide 0.6kg.
Embodiment 6：The preparation of modified nodularization core-spun yarn
Method is with embodiment 1, and the difference lies in the trade mark of nodularization core-spun yarn is QX-Mg26RE2 in step (1)；Raw material
Dosage is：Nodularization core-spun yarn 8kg, micrometer silicon carbide silicon 1.4kg, nanometer silicon carbide 0.6kg.
Embodiment 7：The preparation of modified nodularization core-spun yarn
Method is with embodiment 1, and the difference lies in the trade mark of nodularization core-spun yarn is QX-Mg26RE3 in step (1)；Raw material
Dosage is：Nodularization core-spun yarn 8kg, micrometer silicon carbide silicon 1.4kg, nanometer silicon carbide 0.6kg.
Embodiment 8：The preparation of modified nodularization core-spun yarn
Method is with embodiment 1, and the difference lies in the trade mark of nodularization core-spun yarn is QX-Mg28RE in step (1)；Raw material
Dosage is nodularization core-spun yarn 8kg, micrometer silicon carbide silicon 1.4kg, nanometer silicon carbide 0.6kg.
Embodiment 9：The preparation of modified nodularization core-spun yarn
Method is with embodiment 1, and the difference lies in the trade mark of nodularization core-spun yarn is QX-Mg28RE2 in step (1)；Raw material
Dosage is：Nodularization core-spun yarn 8kg, micrometer silicon carbide silicon 1.4kg, nanometer silicon carbide 0.6kg.
Embodiment 10：The preparation of modified nodularization core-spun yarn
Method is with embodiment 1, and the difference lies in the trade mark of nodularization core-spun yarn is QX-Mg28RE3 in step (1)；Raw material
Dosage is：Nodularization core-spun yarn 8kg, micrometer silicon carbide silicon 1.4kg, nanometer silicon carbide 0.6kg.
Embodiment 11：The preparation of modified nodularization core-spun yarn
Method is with embodiment 1, and the difference lies in the trade mark of nodularization core-spun yarn is QX-Mg30RE in step (1)；Nodularization
Core-spun yarn 8kg, micrometer silicon carbide silicon 1.4kg, nanometer silicon carbide 0.6kg.
Embodiment 12：The preparation of modified nodularization core-spun yarn
Method is with embodiment 1, and the difference lies in the trade mark of nodularization core-spun yarn is QX-Mg30RE2 in step (1)；Raw material
Dosage is：Nodularization core-spun yarn 8kg, micrometer silicon carbide silicon 1.4kg, nanometer silicon carbide 0.6kg.
Embodiment 13：The preparation of modified nodularization core-spun yarn
Method is with embodiment 1, and the difference lies in the trade mark of nodularization core-spun yarn is QX-Mg30RE3 in step (1)；Raw material
Dosage is：Nodularization core-spun yarn 8kg, micrometer silicon carbide silicon 1.4kg, nanometer silicon carbide 0.6kg.
Application Example：
The modification nodularization core-spun yarn that embodiment 1 is prepared is inserted into the spheroidal graphite cast-iron water for smelting qualification using wire feeder
It is handled, sample 1 is obtained after molten steel solidification.The chemical composition (mass percent, %) of the spheroidal graphite cast-iron is as shown in table 1：
Table 1：
| C | Si | Mn | Cr | P | S | Fe and impurity | |
| Stokehold | 3.82 | 2.07 | 1.61 | 0.42 | 0.021 | 0.0071 | Surplus |
| After stove | 3.64 | 2.74 | 2.08 | 0.43 | 0.023 | 0.0075 | Surplus |
Comparative example：
The nodularization core-spun yarn that the trade mark is QX-Mg22RE is inserted using wire feeder into the spheroidal graphite cast-iron water for smelting qualification to carry out
It handles, sample 2 is obtained after molten steel solidification.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.
It was found from upper table 2 and 3 and attached drawing 1,2：For more common nodularization core-spun yarn, using modified nodularization provided by the invention
After core-spun yarn handles spheroidal graphite cast-iron, can more refine cast(ing) surface and the graphite nodule grain size of center portion, improve number of graphite ball and
Oxygen potential.It is preferably used that is, having for the more common nodularization core-spun yarn of modified nodularization core-spun yarn provided by the invention
Effect.
Claims (9)
1. a kind of modified nodularization core-spun yarn, which is characterized in that include the raw material of following mass fraction：Nodularization core-spun yarn 60-
90wt%, micrometer silicon carbide silicon 10-20wt%, nanometer silicon carbide 2-10wt%.
2. modified nodularization core-spun yarn according to claim 1, which is characterized in that include the raw material of following mass fraction：Ball
Change core-spun yarn 75-85wt%, micrometer silicon carbide silicon 10-15wt%, nanometer silicon carbide 5-10wt%.
3. modified nodularization core-spun yarn according to claim 1, which is characterized in that include the raw material of following mass fraction：Ball
Change core-spun yarn 80wt%, micrometer silicon carbide silicon 14wt%, nanometer silicon carbide 6wt%.
4. modified nodularization core-spun yarn according to claim 1, which is characterized in that the nodularization core-spun yarn is selected from the trade mark
QX-Mg22RE、QX-Mg22RE2、QX-Mg24RE、QX-Mg24RE2、QX-Mg26RE、QX-Mg26RE2、QX-Mg26RE3、QX-
Any one in Mg28RE, QX-Mg28RE2, QX-Mg28RE3, QX-Mg30RE, QX-Mg30RE2, QX-Mg30RE3.
5. modified nodularization core-spun yarn according to claim 1, which is characterized in that the grain size of the nodularization core-spun yarn is
10mm-15mm。
6. modified nodularization core-spun yarn according to claim 1, which is characterized in that the purity of the micrometer silicon carbide silicon >=, grain
Diameter is um.
7. modified nodularization core-spun yarn according to claim 1 and preparation method thereof, which is characterized in that the nanometer silicon carbide
Purity >=97%, grain size 40-60nm.
A kind of 8. preparation method of modification nodularization core-spun yarn according to any one of claim 1-7, which is characterized in that packet
Include following steps：
(1) nodularization core-spun yarn powder and micrometer silicon carbide silicon are 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) modified nodularization core-spun yarn is made in mixed material B using core cabling wire machine.
9. the preparation method of modified nodularization core-spun yarn according to claim 8, which is characterized in that the step (1) and (2)
In mixing temperature be room temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711456947.3A CN108148940A (en) | 2017-12-28 | 2017-12-28 | Modified nodularization core-spun yarn and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711456947.3A CN108148940A (en) | 2017-12-28 | 2017-12-28 | Modified nodularization core-spun yarn and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108148940A true CN108148940A (en) | 2018-06-12 |
Family
ID=62463664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711456947.3A Pending CN108148940A (en) | 2017-12-28 | 2017-12-28 | Modified nodularization core-spun yarn and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108148940A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN110357672A (en) * | 2018-08-08 | 2019-10-22 | 友达晶材股份有限公司 | Aqueous silicate solution, fertilizer and preparation method and for make aqueous silicate solution or fertilizer through carbonized powder |
| 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 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105349874A (en) * | 2015-10-29 | 2016-02-24 | 宁波康发铸造有限公司 | Preparation method for nodular cast iron |
| CN105401049A (en) * | 2015-10-29 | 2016-03-16 | 宁波康发铸造有限公司 | Spheroidizing agent and preparation method and application thereof in spheroidal graphite cast iron smelting |
| 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 |
-
2017
- 2017-12-28 CN CN201711456947.3A patent/CN108148940A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105349874A (en) * | 2015-10-29 | 2016-02-24 | 宁波康发铸造有限公司 | Preparation method for nodular cast iron |
| CN105401049A (en) * | 2015-10-29 | 2016-03-16 | 宁波康发铸造有限公司 | Spheroidizing agent and preparation method and application thereof in spheroidal graphite cast iron smelting |
| 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 (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110357672A (en) * | 2018-08-08 | 2019-10-22 | 友达晶材股份有限公司 | Aqueous silicate solution, fertilizer and preparation method and for make aqueous silicate solution or fertilizer through carbonized powder |
| 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 |
| 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 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103757516B (en) | wear-resistant white cast iron and preparation method thereof | |
| CN105401066B (en) | Low tin silicon molybdenum vermicular cast iron and preparation method thereof | |
| CN101705430B (en) | High-speed steel roll and preparation method thereof by centrifugal compounding in electromagnetic field | |
| CN103789603A (en) | Ausferrite nodular iron casting with adjustable performance and manufacturing method thereof | |
| CN108148940A (en) | Modified nodularization core-spun yarn and preparation method thereof | |
| CN105861915A (en) | Ferritic spheroidal graphite cast iron and preparation method thereof | |
| CN108103260A (en) | Core-spun yarn and preparation method thereof is bred in modification | |
| CN106283041A (en) | A kind of fabricated in situ multi-component multi-dimension carbide strengthens the preparation method of iron-based wear-resistant coating | |
| CN108531802A (en) | A kind of copper mine CADI abrading-balls and preparation method thereof | |
| CN105177436B (en) | A kind of high intensity, high tenacity, high-wear-resistant alloy liner plate | |
| CN108950366B (en) | Method for processing nodular cast iron part with good wear resistance | |
| WO2021035898A1 (en) | Wear-resistant lining plate of bucket wheel machine hopper, and preparation method therefor | |
| CN105821173A (en) | Preparation method for nano modified grey cast iron with high tensile strength | |
| CN106011620B (en) | A kind of flexbile gear material and flexbile gear preparation method | |
| CN106148952B (en) | A kind of in-situ authigenic surpasses the preparation method of crude crystal WC enhancing iron-based wear-resistant coating | |
| CN106282759A (en) | A kind of low chromium alloy iron casting and preparation method thereof | |
| CN108220523A (en) | Modified inovulant and preparation method thereof | |
| CN106811677A (en) | A kind of piston ring carrier cast iron materials and its manufacture method | |
| CN108165696A (en) | Modified nodulizer and preparation method thereof | |
| CN111235467B (en) | Iron-based composite intermediate alloy based on oxide and preparation method and application thereof | |
| CN108950364B (en) | Preparation method of high-wear-resistance nodular cast iron part | |
| CN104878285A (en) | High-strength wear-resisting casting material for hydraulic wrench piston and preparation method thereof | |
| CN106544462B (en) | A kind of nodular cast iron inoculant and its preparation method and application | |
| CN115287527B (en) | High-performance hypereutectic high-chromium cast iron without rare earth modifier and preparation method thereof | |
| CN109457170A (en) | A kind of long-acting inovulant of molten iron and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180612 |