CN101104903A - Low-temperature titanium addition method for preparing TiCp/Fe composite material by in situ reaction casting method - Google Patents
Low-temperature titanium addition method for preparing TiCp/Fe composite material by in situ reaction casting method Download PDFInfo
- Publication number
- CN101104903A CN101104903A CNA2007100497508A CN200710049750A CN101104903A CN 101104903 A CN101104903 A CN 101104903A CN A2007100497508 A CNA2007100497508 A CN A2007100497508A CN 200710049750 A CN200710049750 A CN 200710049750A CN 101104903 A CN101104903 A CN 101104903A
- Authority
- CN
- China
- Prior art keywords
- ticp
- ferro
- titanium
- situ reaction
- composite material
- 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.)
- Granted
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
A low-temperature titanium alloying method for preparing TiCp/Fe composite material by in-situ reaction is provided. The method comprises feeding cast iron and 3/4 of low-carbon steel into a medium-frequency induction furnace, heating up, adding the rest steel and ferro-silicon alloy until all metal materials inside the furnace are molten completely, blending thoroughly to obtain a slurry, adding ferro-titanium alloy particles, mixing thoroughly, adding a covering agent, heating up and maintaining, slagging, and casting to obtain TiCp/Fe composite material. The inventive method for preparing TiCp/Fe composite material by in-situ reaction has the advantages that the burning loss rate is kept at about 13 percent, the titanium is directly added into the molten liquid without processing pre-cast block, the operating process is simple, the production cost is greatly reduced, and the application prospect is wide.
Description
Technical field
The invention belongs to the low temperature that in-situ reaction casting prepares the TiCp/Fe matrix material and add titanium method field.
Background technology
The ultimate principle of in-situ reaction casting is: in the liquid alloy of certain ingredients, utilize the high temperature of alloy liquid, make between the alloying element in the alloy liquid or the sufficient chemical reaction of generation between alloying element and the compound, generate the ceramic enhanced granule of one or more high rigidity, high elastic coefficient, can obtain by in-situ particle enhanced metal-base composites by cast form then.In-situ reaction casting prepares the wetting and pollution problem that metal-base composites has been avoided matrix and enhanced granule, and enhanced granule is synthetic in the inner original position of matrix, and the interface combination is better and the interface is clean, and enhanced granule is evenly distributed in matrix.Prepare the method for iron base composite material with in-situ reaction casting, simple, with low cost because of its technology, make excellent material performance and become the research focus.The TiC particle because of have high rigidity, high-modulus, high-melting-point, than characteristics such as high-flexural strength and wear resisting property are good, generally be used as the wild phase of preparation iron base composite material.But since the Ti element active high, oxidisability is strong, causes in the preparation process Ti melting loss of elements serious, has increased production cost.
The technology of at present utilizing in-situ reaction casting to prepare the TiCp/Fe matrix material both at home and abroad generally is: melting Fe-C mother alloy at first, add the pig iron earlier, and treat that pig iron fusing back adds soft steel.Treat that the both melts back (the about 1460-1520 of temperature ℃), (5～10mm) ferro-titanium, and cover with insulating covering agent when the Fe-Ti-C melt is warming up to 1580-1650 ℃, is poured into a mould after being incubated 10min to add certain size.The main drawback of this method is: because ferro-titanium density is littler than mother alloy, adds the most of ferro-titanium in back and float over long-time with air on the metal bath surface, big area and contact, the scaling loss of titanium is many, so exists the big problem of oxidization burning loss always.
Domestic when under atmospheric environment, adopting in-situ reaction to prepare the TiC particle to strengthen iron base composite material, burn out rate generally between 25% to 35%, some in addition up to 40%-50%.According to " Fe-Ti-C melt under atmospheric condition original position synthetic TiCp/Fe composite study " (2000 3 phase P51-54 of matrix material journal tight promising Wei Bai Kang) literary composition report, the burn out rate of titanium can be controlled in about 15%, surely belong to present domestic best level, but when implementing the method for this report, need in advance titanium to be made prefabricated section the technological operation trouble.
Summary of the invention
The low temperature that the in-situ reaction casting that the technical problem to be solved in the present invention provides a kind of burn out rate that can obviously reduce titanium and simple, the suitable industrial mass manufacture of operating procedure prepares the TiCp/Fe matrix material adds the titanium method.
The present invention solves the problems of the technologies described above with following technical scheme:
The medium-frequency induction furnace of earlier soft steel of design foundry iron and 3/4 being packed into, after intensification is all melted metal charge in the stove, add remaining 1/4 steel and ferro-silicon, and stir and make molten metal become pasty state, add the ferro-titanium particle again, the back adding insulating covering agent that stirs covers, and the cast of skimming after heating up, being incubated obtains the TiCp/Fe matrix material.
Insulating covering agent can adopt the mixture of plant ash and charcoal.
Use in-situ reaction casting of the present invention to prepare the TiCp/Fe matrix material, the burn out rate of titanium can be stabilized in about 13%, and need not titanium is made prefabricated section and directly added melt, and operating procedure is simple, and production cost reduces greatly, has a extensive future.
Description of drawings
Fig. 1 is the preceding metallographic structure figure of TiCp/Fe matrix material sample corrosion that adds the preparation of Ti method with this low temperature.
Fig. 2 is with the metallographic structure figure before the TiCp/Fe matrix material sample corrosion of ordinary method preparation.
Fig. 3 is the TiCp/Fe matrix material sample particle power spectrum micro-zone analysis site plan that this low temperature is added the preparation of Ti method.
Fig. 4 is the EDAX results figure of position particle phase shown in the K point of Fig. 3.
Fig. 5 is specimen size figure.
Embodiment
The steel that will calculate required whole foundry irons and 3/4 is earlier packed in the medium-frequency induction furnace, the intensification melting, treat that metal charge all melts back (this moment, temperature was between 1460-1520 ℃) in the stove, add the cooling of remaining 1/4 steel and ferro-silicon, and evenly stirring makes the interior metal of stove become pasty state (this moment, temperature was between 1350-1400 ℃), the ferro-titanium particle that will be crushed to 5～10mm then adds in the stove, stir, the pasty state metal is all wrapped up the ferro-titanium particle, do not make ferro-titanium particle come-up; Add insulating covering agent subsequently and cover, be warming up to 1580-1650 ℃, be incubated the cast sample of skimming after 4-8 minute.In casting ladle, use the aluminium deoxygenation before the cast.
This low temperature adds Ti method Ti melting loss of elements rate (Guangxi metallurgic product quality monitoring testing station result of laboratory test)
| Specimen coding | The percentage composition wt% of Ti design | The actual percentage composition wt% that records Ti | The Ti burn out rate | On average |
| 1 | 2.92 | 2.56 | 12.3％ | 13.1 |
| 2 # | 2.3 | 1.98 | 13.9％ |
Can be known by Fig. 1 and Fig. 2 comparison and to see: adopting low temperature of the present invention to add the Ti legal system, to be equipped with the TiCp/Fe matrix material more much more than the TiC particle of common process preparation, and be more evenly distributed, and this is very beneficial for the raising of material hardness, wear resisting property.Simultaneously, compare, also proved this point from following table 1 and table 2.
This low temperature of table 1 adds the TiCp/Fe matrix material Rockwell hardness of Ti method explained hereafter
| Sample | The hardness value of difference (HRC) | Mean value (HRC) | ||||
| 1 | 2 | 3 | 4 | 5 | ||
| 1 | 45.5 | 42.4 | 44.4 | 44.3 | 45.2 | 44.36 |
| 2 | 48 | 48.1 | 47.5 | 48 | 48.6 | 48.04 |
The TiCp/Fe matrix material Rockwell hardness that table 2 common process is produced
| Sample | The hardness value of difference (HRC) | Mean value (HRC) | ||||
| 1 | 2 | 3 | 4 | 5 | ||
| 1 | 37.6 | 38.1 | 36.9 | 37.5 | ||
| 2 | 40.3 | 41.1 | 39.5 | 40.3 | ||
In order to prove that low temperature of the present invention adds Ti method technology and can generate the TiC particle really, we have carried out XRD material phase analysis (X-ray diffraction material phase analysis) to the TiCp/Fe matrix material sample that adopts this law prepared, diffraction analysis carries out on Japan D/max 2500V of science type X-ray diffractometer, wherein the diffraction target is the copper target, tube voltage is 40kV, tube current is 200mA, is 206mA to the maximum, and the diffraction sample adopts powdered sample.In X-ray diffraction spectrum, ferrite occurs and strengthened two obvious diffraction peaks of body TiC, illustrate to be mainly ferrite in the matrix and to strengthen body TiC.
In order further to determine that the observed enhanced granule of Fig. 3 is the TiC particle really, adopt Inca 300 energy spectrometeies to carry out scanning electron microscope analysis to the element of particle (K point among Fig. 3), its result is as shown in Figure 4.
From as can be seen to particulate scan Electronic Speculum energy spectrum analysis figure: the Ti element particle mutually existence tangible peak value has appearred, the peak value of Fe element then appears in the body material.The peak value that the Fe element why occurs is because have the distribution of Fe element near enhanced granule and basal body interface place, and along with to particle mutually the content of the passing Fe element of inside reduce gradually, go to zero at last.The C peak value is obviously on the low side as can be seen from Figure, and this is that scanning electron microscope is difficult to carry out quantitative analysis, but still can judge that whether the C element exists because the C element is the light weight element, can compare with matrix C content mutually mutually from particle.The TiC particle atomic percent of middle C atom mutually is 39.43%, and in the matrix perlite per-cent of C atom content smaller or equal to 0.77%, so the particle peak value of middle C atom mutually will be higher than the matrix peak value of middle C atom mutually, can also show this phenomenon in the spectrogram.Therefore energy spectrum analysis shows: Ti is two interior mutually main components of particle in the tissue with C, thereby further specifies, and low temperature adds Ti method technology can generate TiC particle wild phase.
Embodiment 1: preparation TiCp/Fe composite materials testing one
1, test materials:
The designing chemical composition (wt%) of TiCp/Fe matrix material sample
Ti 2.92, and C 1.5, and Si 2.5, the Fe surplus
Table 3 TiCp/Fe composite materials testing starting material name chemical ingredients (wt%, Fe is surplus)
| Starting material | Chemical ingredients | Main effect | ||||||
| C | Ti | Si | S | P | Mn | Al | ||
| The pig iron | 4.13 | - | 1.27 | ＜＝0.05 | 0.098 | 0.17 | - | The C atom of synthetic enhanced granule is provided, and body material is provided |
| 45 steel | 0.43 | - | 0.22 | 0.010 | 0.010 | 0.57 | - | Adjust the composition of C atom in the alloy melt |
| Ferrotianium | 0.072 | 26.22 | 3.51 | 0.021 | 0.03 | - | 6.21 | The Ti atom of synthetic enhanced granule is provided |
| Ferrosilicon | 72.0～ 80.0 | ≤0.02 | ≤0.04 | 0.50 | - | Alloying element Si is provided, the effect of bulk deoxidation is arranged simultaneously | ||
2, test apparatus equipment and sample:
A. test apparatus equipment:
Japan's D/max 2500V type X-ray diffractometer of science, Inca 300 energy spectrometeies, HR150D type Rockwell hardometer, HVS-1000 micro Vickers, MCT-110 precision digital temperature measurer, Shanghai experimental electric furnace factory produce the 10kg medium-frequency induction furnace.
The furnace lining of medium-frequency induction furnace is made with magnesia, clay, borax etc., and this has reduced the scaling loss and the scorification loss in molten steel of Ti element of Ti element in the molten steel on the one hand, makes molten steel purer; Improve the refractoriness of furnace lining on the other hand, improved the work-ing life of body of heater.The sample casting mold uses sodium silicate sand to make, and moulding finishes back feeding carbon dioxide makes the sand mold sclerosis, puts into drying baker baking 1 hour then.
B. specimen size is seen Fig. 5.
3, choosing of sample for testing:
Earlier that sample (blank) surface finish is clean, then with inserted tool cutting top layer 2-3mm, drill through sample for testing in the centre, bottom (near the small end place) of big end at last.
4. preparation method:
Raw material: ferro-titanium particle 1113.6 grams, foundry iron 3028.4 grams, No. 45 steel 5616.8, ferro-silicon 282.4 grams.
Technology:
Earlier 3/4 4212.6 of whole foundry irons and No. 45 steel are restrained in the medium-frequency induction furnace of packing into, the intensification melting, after treating that metal charge all melts in the stove, add remaining steel 1404.2 grams and all ferro-silicon coolings down at 1485 ℃, and evenly stirring makes the interior metal of stove become pasty state, add in the stove at 1385 ℃ of ferro-titanium particles that will be crushed to 5～10mm down, stir, the pasty state metal is all wrapped up the ferro-titanium particle, do not make ferro-titanium particle come-up, the mixture that adds plant ash and charcoal subsequently covers, and is warming up to 1580 ℃ of insulations cast sample of skimming after 4 minutes.In casting ladle, use the aluminium deoxygenation before the cast.
5.Ti burn out rate detected result
The wt% 2.92 actual wt% 2.56 Ti burn out rates 12.3% that record Ti of Ti design
Embodiment 2: preparation TiCp/Fe composite materials testing one
1. the raw material among the choosing of test materials, test apparatus equipment and sample, sample for testing, the preparation method is all with embodiment 1.
2. preparation technology:
All 3/4 of foundry iron and steel intensification fusings in medium-frequency induction furnace, under 1460 ℃, add remaining steel, ferro-silicon and stir metal and become pasty state, add the mixtures that add plant ash and charcoal after the ferro-titanium particles stir evenly down 1400 ℃ of temperature and cover, be warming up to 1630 ℃ of insulations cast sample of skimming after 8 minutes.Use the aluminium deoxygenation before the cast.
3.Ti burn out rate detected result
The wt% 2.92 actual wt% 2.54 Ti burn out rates 13.0% that record Ti of Ti design
Embodiment 3: preparation TiCp/Fe composite materials testing one
1. the raw material among the choosing of test materials, test apparatus equipment and sample, sample for testing, the preparation method is with embodiment 1.
2. preparation technology:
All 3/4 of foundry iron and steel intensification fusings in medium-frequency induction furnace, under 1520 ℃, add remaining steel, ferro-silicon and stir metal and become pasty state, add down 1350 ℃ of temperature and to add insulating covering agent after the ferro-titanium particles stir evenly and cover, be warming up to 1650 ℃ of insulations cast sample of skimming after 6 minutes.Use the aluminium deoxygenation before the cast.
3.Ti burn out rate detected result
The wt% 2.92 actual wt% 2.55 Ti burn out rates 12.7% that record Ti of Ti design
Embodiment 4: preparation TiCp/Fe composite materials testing two
1. test materials:
The designing chemical composition (wt%) of TiCp/Fe matrix material sample
Ti 2.3, and C 1.4, and Si 0.6, the Fe surplus
Test uses starting material name chemical ingredients with embodiment 1.
2, test apparatus equipment and sample, sample for testing chooses with embodiment 1.
3. preparation method:
Raw material: No. 45 steel of the ferro-titanium particle 877.2 gram pig iron, 2703.4 grams 6452 grams
Technology:
No. 45 steel 4839 with whole foundry irons and 3/4 restrain in the medium-frequency induction furnace of packing into earlier, the intensification melting, treat that metal charge all melts the 1613 gram coolings of remaining 1/4 steel of back (this moment, temperature was 1515 ℃) adding in the stove, and evenly stirring makes the interior metal of stove become pasty state (this moment, temperature was 1352 ℃), the ferro-titanium particle that will be crushed to 5～10mm then adds in the stove, stirs, and adds insulating covering agent and covers, be warming up to 1580 ℃, be incubated the cast sample of skimming after 4 minutes.In casting ladle, use the aluminium deoxygenation before the cast.
4 Ti burn out rate detected results
The wt% 2.30 of Ti design, the actual wt% 2.00 that records Ti, Ti burn out rate 13%.
Embodiment 5: preparation TiCp/Fe composite materials testing two
1. test materials, test apparatus equipment and sample, sample for testing chooses with embodiment 4.
2. preparation method:
Raw material: with embodiment 4.
Technology: all 3/4 of foundry iron and steel intensification fusings in medium-frequency induction furnace, under 1470 ℃, add remaining steel and stir metal and become pasty state, add the mixtures that add plant ash and charcoal after the ferro-titanium particles stir evenly down 1400 ℃ of temperature and cover, be warming up to 1650 ℃ of insulations cast sample of skimming after 8 minutes.Use the aluminium deoxygenation before the cast.
3.Ti burn out rate detected result
The wt% 2.3 actual wt% 1.9 Ti burn out rates 13.5% that record Ti of Ti design.
Embodiment 6: preparation TiCp/Fe composite materials testing two
1. test materials, test apparatus equipment and sample, sample for testing chooses with embodiment 4.
2. preparation method:
Raw material: with embodiment 4.
Technology: all 3/4 of foundry iron and steel intensification fusings in medium-frequency induction furnace, under 1460 ℃, add remaining steel and stir metal and become pasty state, add the mixture insulating covering agents that add plant ash and charcoal after the ferro-titanium particles stir evenly down 1360 ℃ of temperature, be warming up to 1600 ℃ of insulations cast sample of skimming after 6 minutes.Use the aluminium deoxygenation before the cast.
3.Ti burn out rate detected result
The wt% 2.3 actual wt% 1.97 Ti burn out rates 14.3% that record Ti of Ti design
Embodiment 7: preparation TiCp/Fe composite materials testing two
1. test materials, test apparatus equipment and sample, sample for testing chooses with embodiment 4.
2. preparation method:
Raw material: with embodiment 4.
Technology: all 3/4 of foundry iron and steel intensification fusings in medium-frequency induction furnace, under 1520 ℃, add remaining steel and stir metal and become pasty state, add down 1385 ℃ of temperature and to add insulating covering agent after the ferro-titanium particles stir evenly, be warming up to 1590 ℃ of insulations cast sample of skimming after 8 minutes.Use the aluminium deoxygenation before the cast.
3.Ti burn out rate detected result
The wt% 2.3 actual wt% 2.01 Ti burn out rates 12.6% that record Ti of Ti design
Claims (2)
1. the in-situ reaction casting low temperature for preparing the TiCp/Fe matrix material adds the titanium method, treat that the pig iron and soft steel all melt the back and adds the ferro-titanium particle, with the insulating covering agent covering melt is heated up, the cast of insulation back, it is characterized in that earlier the soft steel of required foundry iron and 3/4 being packed into medium-frequency induction furnace, after intensification is all melted metal charge in the stove, add remaining 1/4 steel and ferro-silicon, and stir and make molten metal become pasty state, add the ferro-titanium particle again, the back adding insulating covering agent that stirs covers, be warming up to 1580-1650 ℃, be incubated the cast of skimming after 4-8 minute, obtain the TiCp/Fe matrix material.
2. the low temperature that in-situ reaction casting as claimed in claim 1 prepares the TiCp/Fe matrix material adds the titanium method, it is characterized in that insulating covering agent adopts the mixture of plant ash and charcoal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100497508A CN100494443C (en) | 2007-08-07 | 2007-08-07 | Low-temperature titanium addition method for preparing TiCp/Fe composite material by in situ reaction casting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100497508A CN100494443C (en) | 2007-08-07 | 2007-08-07 | Low-temperature titanium addition method for preparing TiCp/Fe composite material by in situ reaction casting method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101104903A true CN101104903A (en) | 2008-01-16 |
| CN100494443C CN100494443C (en) | 2009-06-03 |
Family
ID=38998981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100497508A Expired - Fee Related CN100494443C (en) | 2007-08-07 | 2007-08-07 | Low-temperature titanium addition method for preparing TiCp/Fe composite material by in situ reaction casting method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100494443C (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102140604A (en) * | 2010-10-29 | 2011-08-03 | 广西大学 | Low-temperature vanadium adding method for preparing VCp/Fe composite material by using in-situ reaction casting process |
| CN105463328A (en) * | 2015-12-10 | 2016-04-06 | 安徽相邦复合材料有限公司 | In-situ mixed particle reinforcement steel-based composite material and preparing method thereof |
| CN105714175A (en) * | 2016-03-16 | 2016-06-29 | 繁昌县华彩铸造有限公司 | Preparation method of pig-iron-based composite |
| CN106011513A (en) * | 2016-07-28 | 2016-10-12 | 张彦才 | Covering agent for aluminum or aluminum alloy melting and preparation method of covering agent |
| CN106917045A (en) * | 2017-03-07 | 2017-07-04 | 广西大学行健文理学院 | Cast the manufacture method of cold upsetting die of car |
| CN107747066A (en) * | 2017-11-13 | 2018-03-02 | 吉林大学 | Raw nano TiC ceramic particle In-sltu reinforcement casts high chromium hot die steel and preparation method thereof in one kind |
| CN112567060A (en) * | 2018-08-07 | 2021-03-26 | 国立大学法人广岛大学 | Fe-based sintered body, method for producing Fe-based sintered body, and die for hot pressing |
-
2007
- 2007-08-07 CN CNB2007100497508A patent/CN100494443C/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102140604A (en) * | 2010-10-29 | 2011-08-03 | 广西大学 | Low-temperature vanadium adding method for preparing VCp/Fe composite material by using in-situ reaction casting process |
| CN105463328A (en) * | 2015-12-10 | 2016-04-06 | 安徽相邦复合材料有限公司 | In-situ mixed particle reinforcement steel-based composite material and preparing method thereof |
| CN105714175A (en) * | 2016-03-16 | 2016-06-29 | 繁昌县华彩铸造有限公司 | Preparation method of pig-iron-based composite |
| CN106011513A (en) * | 2016-07-28 | 2016-10-12 | 张彦才 | Covering agent for aluminum or aluminum alloy melting and preparation method of covering agent |
| CN106011513B (en) * | 2016-07-28 | 2018-07-17 | 张彦才 | A kind of aluminum or aluminum alloy melting coverture and preparation method thereof |
| CN106917045A (en) * | 2017-03-07 | 2017-07-04 | 广西大学行健文理学院 | Cast the manufacture method of cold upsetting die of car |
| CN106917045B (en) * | 2017-03-07 | 2019-03-05 | 广西大学行健文理学院 | Cast the manufacturing method of cold upsetting die of car |
| CN107747066A (en) * | 2017-11-13 | 2018-03-02 | 吉林大学 | Raw nano TiC ceramic particle In-sltu reinforcement casts high chromium hot die steel and preparation method thereof in one kind |
| CN107747066B (en) * | 2017-11-13 | 2019-12-27 | 吉林大学 | Endogenous nano TiC ceramic particle in-situ reinforced cast high-chromium hot-work die steel and preparation method thereof |
| CN112567060A (en) * | 2018-08-07 | 2021-03-26 | 国立大学法人广岛大学 | Fe-based sintered body, method for producing Fe-based sintered body, and die for hot pressing |
| CN112567060B (en) * | 2018-08-07 | 2022-04-12 | 国立大学法人广岛大学 | Fe-based sintered body, method for producing Fe-based sintered body, and die for hot pressing |
| US11858045B2 (en) | 2018-08-07 | 2024-01-02 | Hiroshima University | Fe-based sintered body, Fe-based sintered body production method, and hot-pressing die |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100494443C (en) | 2009-06-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100494443C (en) | Low-temperature titanium addition method for preparing TiCp/Fe composite material by in situ reaction casting method | |
| CN110125383B (en) | Method for manufacturing high-purity iron-chromium-aluminum alloy powder | |
| CN103820704B (en) | Form in High Nickel Austenite Nodular Cast Iron material of vehicle turbine housing and preparation method thereof | |
| CN108624807A (en) | A kind of high nodulizing rate vermicular cast iron of the high either pearlite occurred of as cast condition and preparation method thereof | |
| CN101475382A (en) | Low carbon magnesia-carbon brick, method for manufacturing the same and use thereof | |
| CN107267854A (en) | The smelting process and product of a kind of high carbon ferro-chrome | |
| CN106086534B (en) | A kind of aluminium carbon copper alloy earthing material of high-strength corrosion-resisting | |
| CN104141025B (en) | The method of electro-aluminothermic process vanadium iron casting dealuminzation | |
| CN101886209B (en) | Medium silicon-molybdenum vermicular iron material | |
| CN108754297A (en) | A kind of vermicular cast iron of seawater corrosion resistance and preparation method thereof | |
| CN100359029C (en) | Method and apparatus for preparing VC-FeNiCr composite material by employing aluminothermy-quick solidification process | |
| CN104004942A (en) | TiC particle-reinforced nickel-based composite material and preparation method thereof | |
| CN108642366B (en) | Alterant for thin-wall high-strength gray cast iron and melting method thereof | |
| CN102153357B (en) | Ultra-low cement or non-cement in-situ silicon carbide whisker self-bonding silicon carbide prefabricated part | |
| CN100497688C (en) | Method of preparing TiC-FeNiCrMo composite material using aluminothermic-fast solidification technology | |
| CN101850479A (en) | Welding material for rapidly welding and repairing defects of large-scale ductile iron castings and repairing method | |
| CN101850478A (en) | Welding material for rapidly welding and repairing defects of large-scale grey iron casting and repairing method thereof | |
| CN102140604A (en) | Low-temperature vanadium adding method for preparing VCp/Fe composite material by using in-situ reaction casting process | |
| Tayier et al. | Microwave hybrid heating (MHH) of Ni-based alloy powder on Ni and steel-based metals–A review on fundamentals and parameters | |
| CN101403068A (en) | Austenite spheroidal iron and producing method thereof | |
| Chen et al. | Improved thermal shock stability and oxidation resistance of low-carbon MgO–C refractories with introduction of SiC whiskers | |
| CN105648305B (en) | High-strength gray cast iron material and preparation method thereof | |
| CN100449028C (en) | TiB2-FeNiCr composite material and its preparation method and aluminothermic fast solieification device | |
| CN102233417A (en) | Centrifugal casting process for main pipeline of million kilowatt-grade nuclear power plant | |
| CN100398686C (en) | CrB2-FeNiCr composite material, its preparation method and aluminothermy-quick solidification apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090603 Termination date: 20120807 |