CN1868635A - Preparation method of local reinforced steel base composite material for synthosizing TiC particle in mould - Google Patents
Preparation method of local reinforced steel base composite material for synthosizing TiC particle in mould Download PDFInfo
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- CN1868635A CN1868635A CN 200610016778 CN200610016778A CN1868635A CN 1868635 A CN1868635 A CN 1868635A CN 200610016778 CN200610016778 CN 200610016778 CN 200610016778 A CN200610016778 A CN 200610016778A CN 1868635 A CN1868635 A CN 1868635A
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Abstract
A technology for preparing the steel-based composition reinforced locally by the TiC particles which are synthesized in mould includes such steps as uniformly mixing Al powder, C powder and Ti-Fe powder, die pressing to obtain prefabricated block, vacuum heating for removing moisture and gas while passivating, putting the fabricated block at the position in mould, where is needed to reinforce, pouring molten steel in the mould, and high-temp synthesis reaction to generate the reinforcing phase (TiC particles).
Description
Technical field
Invention the present invention relates to the preparation method that a kind of granule partial strengthens the cast steel based composites, particularly relates to utilizing the Ti-Fe powder to replace pure Ti powder to prepare the preparation method that the TiC granule partial strengthens the cast steel based composites.
Background technology
The TiC particle reinforced steel-base composite material is owing to have high strength, and high ratio modulus, heat-resisting, multiple excellent comprehensive performances such as fatigue performance is good have become and introduced the focus that the base steel composite material of attracting attention is studied.At present, in preparing, the pure Ti powder of general using gives birth to the TiC particle reinforced steel-base composite material, because pure Ti powder price comparison costliness, be unfavorable for industrialization and commercialization, and it is more violent at the die cavity internal reaction, restive, for this reason, the present invention proposes the preparation method that a kind of technology is simple, with low cost, local T iC particle that be easy to promote the use of strengthens the cast steel based composites, promptly adopt the Ti-Fe powder to replace pure Ti powder to prepare wild phase TiC particle, when improving prepared composite property, make cost reduce greatly.
Summary of the invention
The objective of the invention is to overcome routine utilizes pure Ti powder to give birth to the TiC particle reinforced steel-base composite material in preparing to cost an arm and a leg, and it is more violent at the die cavity internal reaction, restive shortcoming provides the interior synthetic TiC granule partial of a kind of technology casting mold simple, with low cost, that be easy to promote the use of to strengthen the preparation method of base steel composite material.
According to the associated alloys phasor, consideration reaction simultaneously and cooling procedure are carried out under nonequilibrium condition, so in the iron liquid following reaction may take place:
By calculation of thermodynamics as can be known: for the Fe-Ti-C-Al system, the thermodynamic stability of TiC will be far longer than Fe
2Ti, TiAl
3, Fe
3C, Al
4C
3Etc. phase, and under most of situation, in 1600 ℃ molten steel, TiC just can generate.For strengthening the cast steel based composites, the synthetic preparation of research Fe-Ti-C-Al system high-temperature TiC granule partial provides theoretical foundation.
Concrete technical scheme of the present invention is: will be placed on the interior foundry goods of casting mold through the prefabricated section after the vacuum degassing and need strengthen the position, pour into the matrix molten steel, make prefabricated section generation high temperature synthetic reaction generation TiC particle wild phase in the type, prepare the TiC granule partial and strengthen base steel composite material.Its technical process comprises preparation and interior two stages of high temperature synthetic reaction of type of reaction prefabricated block:
(1) preparation of prefabricated section: in the Al powder (industrial aluminium powder) of a certain amount of and granularity, C powder, Ti-Fe powder (20%≤Ti content≤80%) ball mill of packing into, ball milling 4-10h, make it even, then the raw material that mixes is put into mould, compression moulding at room temperature, again the prefabricated section that suppresses is put into heating in vacuum device, 10
-6≤ vacuum≤10
-1MPa is heated to 300 ± 100 ℃ with the rate of heat addition of 5-30 ℃/min, dehumidifying degasification 3 ± 1.5 hours, and logical simultaneously argon gas carries out preliminary treatment;
Wherein Ti, C atomic ratio are 0.8-1.2,0≤Al content≤30%, C powder degree＜100 μ m, Al, Ti-Fe powder degree＜200 μ m.
(2) the synthetic particle wild phase of high temperature in the type: place through vacuum high-temperature dehumidifying degasification and pretreated prefabricated section at the position that foundry goods need strengthen, high-temperature molten steel is cast to casting mold, the prefabricated section reaction generates the particle wild phase in the initiation type, prepares the TiC granule partial and strengthens the cast steel based composites.
The present invention has the following advantages:
1) utilizes Ti-Fe powder instead of pure Ti powder, make that the high temperature synthetic reaction in die cavity is relatively gentleer, be easy to control;
2) technology is simple, and is with low cost, is easy to apply, and carries out the scale commodity production;
3) successfully solved the problem of the base steel composite material poor impact toughness that whole composite algorithm makes;
4) avoided adding the wetability that particle produces poor, easily pollute, the interface in conjunction with bad, particle is poly-partially, easily is distributed in shortcomings such as crystal boundary.
Description of drawings
Fig. 1 (a) granule partial strengthens base steel composite material matrix and enhancement region Interface Microstructure Al (10wt%)+C+Ti-Fe;
Fig. 1 (b) granule partial strengthens base steel composite material matrix and enhancement region Interface Microstructure Al (30wt%)+C+Ti-Fe;
Fig. 2 (a) granule partial strengthens the base steel composite material enhancement region and organizes Al (10wt%)+C+Ti-Fe;
Fig. 2 (b) granule partial strengthens the base steel composite material enhancement region and organizes Al (30wt%)+C+Ti-Fe.
The specific embodiment
Give birth to the TiC granule partial in the pyroreaction of utilizing the present invention to prepare and strengthen the cast steel based composites, when not influencing the intrinsic advantage of matrix steel, improved the mechanical property and the wearability of composite greatly, have a good application prospect and market potential.Respectively with manganese steel, 45
#Steel, 35CrMnSi are matrix, and microhardness (HV) and wearability that the TiC granule partial of preparation strengthens the cast steel based composites are greatly improved, and its relative wear resistance is 4.34 times of matrix manganese steel, is 45
#2.4 times of steel matrix are 2.3 times of 35CrMnSi matrix, and concrete data see Table 1.
Table 1
| Material | Microhardness (HV) | Relative wear resistance | Ti∶C | Al content |
| Manganese steel matrix matrix enhancement region 45 #35CrMnSi matrix matrix enhancement region, steel matrix matrix enhancement region | 416 1122 718 1327 705 1306 | 1 4.34 1 2.4 1 2.3 | 0.8 1.0 1.1 | 30％ 20％ 5％ |
The present invention is the preparation technology that the TiC granule partial that is easy to promote the use of strengthens base steel composite material, adopt Ti-Fe powder instead of pure Ti powder, greatly reduce production cost, utilize the method for prefabricated section, the formation of TiCp and the moulding of foundry goods are once finished, improve production efficiency, reduced the waste of the energy, successfully avoided adding the shortcoming that particle method and overall enhanced legal system are equipped with particulate reinforced composite.
Claims (1)
1, the preparation method of synthetic TiC granule partial enhancing base steel composite material in a kind of casting mold is characterized in that technical process comprises preparation and interior two stages of high temperature synthetic reaction of type of reaction prefabricated block.
A) preparation of prefabricated section: a certain amount of and industrial Al powder, C powder, Ti-Fe powder granularity are packed in the ball mill, 20%≤Ti content≤80% wherein, ball milling 4-10h, make it even, then the raw material that mixes is put into mould, compression moulding is at room temperature put into heating in vacuum device, 10 with the prefabricated section that suppresses again
-6≤ vacuum≤10
-1MPa is heated to 300 ± 100 ℃ with the rate of heat addition of 5-30 ℃/min, dehumidifying degasification 3 ± 1.5 hours, and logical simultaneously argon gas carries out Passivation Treatment; Wherein Ti, C atomic ratio are 0.8-1.2,0≤Al content≤30%, C powder degree＜100 μ m, Al, Ti-Fe powder degree＜200 μ m.
B) the synthetic particle wild phase of high temperature in the type: place through vacuum high-temperature dehumidifying degasification and pretreated prefabricated section at the position that foundry goods need strengthen, then high-temperature molten steel is cast to casting mold, the high temperature synthetic reaction of prefabricated section in the initiation type, generate the particle wild phase, prepare the TiC granule partial and strengthen the cast steel based composites.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610016778 CN1868635A (en) | 2006-04-19 | 2006-04-19 | Preparation method of local reinforced steel base composite material for synthosizing TiC particle in mould |
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|---|---|---|---|
| CN 200610016778 CN1868635A (en) | 2006-04-19 | 2006-04-19 | Preparation method of local reinforced steel base composite material for synthosizing TiC particle in mould |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101161374B (en) * | 2007-11-27 | 2010-08-11 | 吉林大学 | Reactant composition for preparing multiple phase confusion TiB2-TiC ceramic particle gradient enhancement metal-based complex material |
| CN102176973A (en) * | 2008-09-19 | 2011-09-07 | 马格托国际股份有限公司 | Composite impactor for percussion crushers |
| CN102921923A (en) * | 2012-10-25 | 2013-02-13 | 江苏大学 | Method for preparing TiC+Al2O3 particle-reinforced steel-based surface-recombined excavator form-relieved tooth |
| EP2650064A2 (en) | 2012-04-10 | 2013-10-16 | Akademia Górniczo-hutnicza Im. Stanis Awa Staszica | A method for producing composite zones in castings |
| WO2017081665A1 (en) * | 2015-11-12 | 2017-05-18 | Innerco Sp. Z O.O. | Powder composition for the manufacture of casting inserts, casting insert and method of obtaining local composite zones in castings |
| CN108348995A (en) * | 2015-11-12 | 2018-07-31 | 伊诺科有限责任公司 | Method for manufacturing the powder composition of casting inserts, casting inserts and obtain local recombination region in casting |
| WO2022008038A1 (en) * | 2020-07-07 | 2022-01-13 | Sandvik Srp Ab | A crushing or wear part having a localized composite wear zone |
-
2006
- 2006-04-19 CN CN 200610016778 patent/CN1868635A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101161374B (en) * | 2007-11-27 | 2010-08-11 | 吉林大学 | Reactant composition for preparing multiple phase confusion TiB2-TiC ceramic particle gradient enhancement metal-based complex material |
| CN102176973A (en) * | 2008-09-19 | 2011-09-07 | 马格托国际股份有限公司 | Composite impactor for percussion crushers |
| EP2650064A2 (en) | 2012-04-10 | 2013-10-16 | Akademia Górniczo-hutnicza Im. Stanis Awa Staszica | A method for producing composite zones in castings |
| EP2650064A3 (en) * | 2012-04-10 | 2014-04-30 | AKADEMIA GORNICZO-HUTNICZA im. Stanislawa Staszica | A method for producing composite zones in castings |
| CN102921923A (en) * | 2012-10-25 | 2013-02-13 | 江苏大学 | Method for preparing TiC+Al2O3 particle-reinforced steel-based surface-recombined excavator form-relieved tooth |
| WO2017081665A1 (en) * | 2015-11-12 | 2017-05-18 | Innerco Sp. Z O.O. | Powder composition for the manufacture of casting inserts, casting insert and method of obtaining local composite zones in castings |
| CN108348995A (en) * | 2015-11-12 | 2018-07-31 | 伊诺科有限责任公司 | Method for manufacturing the powder composition of casting inserts, casting inserts and obtain local recombination region in casting |
| JP2019501026A (en) * | 2015-11-12 | 2019-01-17 | インナーコ サパ．ザ オ．オ． | Powder composition for producing cast insert and cast insert and method for obtaining a local composite zone in the cast |
| US11077493B2 (en) | 2015-11-12 | 2021-08-03 | Innerco Sp. Z O.O. | Powder composition for the manufacture of casting inserts, casting insert and method of obtaining local composite zones in castings |
| CN108348995B (en) * | 2015-11-12 | 2021-11-16 | 伊诺科有限责任公司 | Powder composition for manufacturing a casting insert, casting insert and method for obtaining a local composite zone in a casting |
| US11548065B2 (en) | 2015-11-12 | 2023-01-10 | INNERCO Sp. Z.O.O. | Powder composition for the manufacture of casting inserts, casting insert and method of obtaining local composite zones in castings |
| WO2022008038A1 (en) * | 2020-07-07 | 2022-01-13 | Sandvik Srp Ab | A crushing or wear part having a localized composite wear zone |
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