CN106834884B - The method of WC enhancing particle is added in half steel material - Google Patents
The method of WC enhancing particle is added in half steel material Download PDFInfo
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- CN106834884B CN106834884B CN201611244395.5A CN201611244395A CN106834884B CN 106834884 B CN106834884 B CN 106834884B CN 201611244395 A CN201611244395 A CN 201611244395A CN 106834884 B CN106834884 B CN 106834884B
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
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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
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/52—Manufacture of steel in electric furnaces
- C21C5/5241—Manufacture of steel in electric furnaces in an inductively heated furnace
- C21C5/5247—Manufacture of steel in electric furnaces in an inductively heated furnace processing a moving metal stream while exposed to an electromagnetic field, e.g. in an electromagnetic counter current channel
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
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- 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
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- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
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- Electromagnetism (AREA)
- Manufacturing & Machinery (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
The method that the invention discloses a kind of to be added WC enhancing particle in half steel material, belong to high-performance composite materials technical field, including preparing with the WC of half steel material molten steel similar density enhancing particle, half steel material of melting in induction melting furnace, the WC for being uniformly added into 3~6%wt in 1min enhance three step of particle.The sample hardness that particle sample is added in the present invention improves 1.5 times than the hardness of particle sample is not added, and for wearability, the sample that particle is added is that 3 times of granular or more are not added, and the ferrosteel roll material that particle is added is greatly improved relative to the ferrosteel roll material that particle is not added on service life.
Description
Technical field
The method that the present invention relates to a kind of to be added WC enhancing particle in half steel material, belongs to high-performance composite materials technology
Field.
Background technique
As iron and steel domain develops, the emergence of the steel grades such as especially high-strength, ultra-thin improves rolling for rolling industry main component
Roller wearability and thermal fatigue resistance promote steel mill of China solid roll quality, and it is imperative to reduce roll consumption amount.It improves
Roll material performance cannot improve product cost only according to the traditional approach such as high alloy are added, and it is high, hard that WC enhances particle fusing point
Degree is big, and linear expansion coefficient is small, with good stability, if WC enhancing particle high intensity, the performance of high-wearing feature can be utilized
The variation that will make traditional wear-resistant material that matter occur.
How WC is enhanced into particle and fuse into matrix well, how to choose basis material, is all exploitation particle reinforced material
Urgent problem.
Summary of the invention
The method that the technical problem to be solved by the invention is to provide a kind of to be added WC enhancing particle in half steel material, with
Rolling industry roll wearability and thermal fatigue resistance are improved, roll quality is promoted, reduces roll consumption amount.
In order to solve the above technical problems, the technical scheme adopted by the invention is that:
A method of WC, which being added, in half steel material enhances particle, includes the following steps:
Step A, preparing enhances particle with the WC of half steel material molten steel similar density, WC enhancing particle is crushed,
Milling makes 1~3mm of its granularity, and then by WC enhancing particle, drying, preheating are stand-by at 100 DEG C；
Step B, half steel material of melting in induction melting furnace, lift temperature to 1550 after melting molten steel reaches design requirement~
1650 DEG C, low-power keeps the temperature 1.5~3min, to improve molten steel internal temperature uniformity, guarantees molten steel surface without steel slag；
Step C, the WC enhancing particle of 3~6%wt is uniformly added into the case where not having a power failure in 1min, it is then high-power to send
Electricity, electromagnetic agitation guarantee that melting molten steel temperature is no more than 1500 DEG C in transmission process, stir have a power failure after 1.5~3min, casting.
Technical solution of the present invention further improvement lies in that: the alloying component of half steel material in step A and step B and each
The weight percentage of alloying component are as follows: C1.5~1.6%, Si0.9~1.1%, Mn0.9~1.1%, P≤0.05%, S≤
0.06%, W+V+Nb≤0.02%, surplus Fe.
Technical solution of the present invention further improvement lies in that: in W+V+Nb≤0.02, W, V, Nb can take its three kinds, two kinds
Or any one.
Technical solution of the present invention further improvement lies in that: in step A WC enhance particle be sintering WC, be sintered the preparation of WC
Method be by C powder and W powder after evenly mixing, be sintered using discharge plasma sintering device, sintering temperature is 1100~
1300 DEG C, 6~10min is kept the temperature, sintering WC is in open structure.
Technical solution of the present invention further improvement lies in that: WC enhance particle density be 7.6~7.8g/cm3。
Technical solution of the present invention further improvement lies in that: the low-power of low-power in step B heat preservation is 8~12kW.
Technical solution of the present invention further improvement lies in that: high-power in the high-power power transmission in step C be 40~
60kW。
By adopting the above-described technical solution, the technological progress achieved by the present invention is:
The present invention to matrix material ingredients, WC enhancing particle adding manner, be added opportunity and be added after melt the time into
Research is gone, for the mode of fusing into of particle, final purpose is to can guarantee that WC enhancing particle can be embedded in base in the form of granules
In body, play the role of Second Phase Particles reinforcing.The present invention is using induction melting furnace as smelting equipment, by the way that particle is added in furnace
Mode is evenly distributed on particle inside molten steel using the magnetic agitating function of induction melting furnace itself, the guarantor after particle is added
The warm time, on the one hand particle is made to have time enough to be distributed, on the other hand particle will not be made to decompose in high-temperature molten steel.This
Material wear ability can be improved in method, reduces material alloys additional amount, remarkable in economical benefits.
Detailed description of the invention
Fig. 1 is the scanning electron microscopic picture under the backscattered electron probe of 100 times of amplification, and white particle is particulates reinforcements carbon
Change tungsten, others tissue is matrix.
Specific embodiment
A method of WC, which being added, in half steel material enhances particle, includes the following steps:
Step A, preparing enhances particle with the WC of half steel material molten steel similar density, WC enhancing particle is crushed,
Milling makes 1~3mm of its granularity, and then by WC enhancing particle, drying, preheating are stand-by at 100 DEG C；
Step B, half steel material of melting in induction melting furnace, lift temperature to 1550 after melting molten steel reaches design requirement~
1650 DEG C, low-power keeps the temperature 1.5~3min, improves molten steel internal temperature uniformity, guarantees molten steel surface without steel slag；
Step C, the WC enhancing particle of 3~6%wt is uniformly added into the case where not having a power failure in 1min, it is then high-power to send
Electricity, electromagnetic agitation guarantee that melting molten steel temperature is no more than 1500 DEG C in transmission process, stir have a power failure after 1.5~3min, casting.
The alloying component of half steel material in step A and step B and the weight percentage of each alloying component are as follows: C1.5~
1.6%, Si0.9~1.1%, Mn0.9~1.1%, P≤0.05%, S≤0.06%, W+V+Nb≤0.02%, surplus Fe.
In W+V+Nb≤0.02%, since W, V, Nb are impurity element, the distribution and melting of WC in the base are influenced, therefore
Can take its three kinds, two kinds or any one, as long as three's total amount≤0.02%.
It is sintering WC that WC, which enhances particle, in step A, be sintered WC preparation method be by C powder and W powder after evenly mixing, use
Discharge plasma sintering device is sintered, and sintering temperature is 1100~1300 DEG C, keeps the temperature 6~10min, and sintering WC is in loose knot
The density of structure, the WC enhancing particle being prepared is 7.6~7.8g/cm3, since molten steel density is 7.8g/cm3Left and right, therefore WC
Enhancing particle suspends just and is evenly distributed in half steel molten steel inside, and inlays in the form of granules in the base.
The low-power of low-power heat preservation in step B is 8~12kW, it can be ensured that molten steel will not be solidified because of low temperature.Step C
In high-power power transmission in it is high-power be 40~60kW, the soaking time after particle is added has particle enough
Time be distributed, on the other hand particle will not be made to decompose in high-temperature molten steel.
Scanning electron microscopic picture as shown in Figure 1, in the case where amplifying 100 times, WC enhancing particle fuses into matrix well,
It inlays in the form of granules in the base, plays the role of Second Phase Particles reinforcing.
The present invention is described in further details below with reference to embodiment:
Embodiment 1
Using steel scrap as raw material, melting is carried out using 100~200Kg smelting furnace, ingredient reaches half steel matrix component:
C1.5%, Si0.9%, Mn0.9%, P≤0.05%, S≤0.06%, the standard analysis of W+V+Nb≤0.02% and Fe surplus
Afterwards, molten steel temperature is heated to 1600 DEG C, 10kW low-power power transmission guarantees molten steel surface without steel slag, then not after keeping the temperature 2min
WC enhancing particle is uniformly added into the case where power failure in 1min, WC enhances the 5%wt that particle loads are molten steel, and then 50kW is big
Power power transmission, adds after particle that molten steel temperature is maintained at 1500 DEG C of heat preservations and electromagnetic agitation 2min in transmission process, and stirring is protected
Have a power failure after temperature, come out of the stove, be poured.
WC enhancing particle is sintering WC, be sintered WC preparation method be by C powder and W powder after evenly mixing, using electric discharge etc.
Ion sintering equipment is sintered, and sintering temperature is 1100~1300 DEG C, keeps the temperature 6~10min, and sintering WC is in open structure.
Embodiment 2
The difference of the present embodiment and embodiment 1 are as follows: using steel scrap as raw material, melting is carried out using 100~200Kg smelting furnace,
Ingredient reaches half steel matrix component: C1.53%, Si0.95%, Mn0.95%, P≤0.05%, S≤0.05%, and W+V+Nb≤
After the standard analysis of 0.02% and Fe surplus, molten steel temperature is heated to 1550 DEG C, is protected after 8kW low-power power transmission heat preservation 1.5min
Molten steel surface is demonstrate,proved without steel slag, is then uniformly added into WC enhancing particle in 1min in the case where not having a power failure, WC enhances particle and is added
Amount is the 3%wt of molten steel, the then high-power power transmission of 40kW, adds after particle that molten steel temperature is maintained at 1490 DEG C in transmission process
It keeps the temperature and electromagnetic agitation 1.5min, stirring has a power failure after keeping the temperature, come out of the stove, be poured.
Embodiment 3
The difference of the present embodiment and embodiment 1 are as follows: using steel scrap as raw material, melting is carried out using 100~200Kg smelting furnace,
Ingredient reaches half steel matrix component: C1.58%, Si1.0%, Mn1.0%, P≤0.05%, S≤0.06%, and W+V+Nb≤
After the standard analysis of 0.02% and Fe surplus, molten steel temperature is heated to 1610 DEG C, is protected after 9kW low-power power transmission heat preservation 2.5min
Molten steel surface is demonstrate,proved without steel slag, is then uniformly added into WC enhancing particle in 1min in the case where not having a power failure, WC enhances particle and is added
Amount is the 4%wt of molten steel, the then high-power power transmission of 45kW, adds after particle that molten steel temperature is maintained at 1480 DEG C in transmission process
It keeps the temperature and electromagnetic agitation 2.5min, stirring has a power failure after keeping the temperature, come out of the stove, be poured.
Embodiment 4
The difference of the present embodiment and embodiment 1 are as follows: using steel scrap as raw material, melting is carried out using 100~200Kg smelting furnace,
Ingredient reaches half steel matrix component: C1.54%, Si1.05%, Mn1.06%, P≤0.05%, S≤0.06%, and W+V+Nb≤
After the standard analysis of 0.02% and Fe surplus, molten steel temperature is heated to 1620 DEG C, after 11kW low-power power transmission keeps the temperature 2.5min
Guarantee molten steel surface without steel slag, be then uniformly added into WC enhancing particle in 1min in the case where not having a power failure, WC enhancing particle adds
Enter the 4.5%wt that amount is molten steel, the then high-power power transmission of 55kW adds after particle that molten steel temperature is maintained in transmission process
1495 DEG C of heat preservations and electromagnetic agitation 3min have a power failure after stirring heat preservation, come out of the stove, are poured.
Embodiment 5
The difference of the present embodiment and embodiment 1 are as follows: using steel scrap as raw material, melting is carried out using 100~200Kg smelting furnace,
Ingredient reaches half steel matrix component: C1.6%, Si1.1%, Mn1.1%, P≤0.05%, S≤0.06%, and W+V+Nb≤
After the standard analysis of 0.02% and Fe surplus, molten steel temperature is heated to 1620 DEG C, is protected after 11kW low-power power transmission heat preservation 3min
Molten steel surface is demonstrate,proved without steel slag, is then uniformly added into WC enhancing particle in 1min in the case where not having a power failure, WC enhances particle and is added
Amount is the 6%wt of molten steel, the then high-power power transmission of 60kW, adds after particle that molten steel temperature is maintained at 1500 DEG C in transmission process
It keeps the temperature and electromagnetic agitation 3min, stirring has a power failure after keeping the temperature, come out of the stove, be poured.
Embodiment 6
The difference of the present embodiment and embodiment 1 are as follows: using steel scrap as raw material, melting is carried out using 100~200Kg smelting furnace,
Ingredient reaches half steel matrix component: C1.59%, Si1.08%, Mn1.06%, P≤0.05%, S≤0.06%, and W+V+Nb≤
After the standard analysis of 0.02% and Fe surplus, molten steel temperature is heated to 1600 DEG C, 11.5kW low-power power transmission keeps the temperature 2.6min
Guarantee molten steel surface afterwards without steel slag, be then uniformly added into WC enhancing particle in 1min in the case where not having a power failure, WC enhances particle
Additional amount is the 5.5%wt of molten steel, the then high-power power transmission of 55kW, adds after particle that molten steel temperature is maintained in transmission process
1498 DEG C of heat preservations and electromagnetic agitation 3min have a power failure after stirring heat preservation, come out of the stove, are poured.
Embodiment 7
Embodiment 7 is reference examples, and WC enhancing particle is added without in half steel material.
1~embodiment of Example, 7 product carries out the detection of sample tensile mechanical properties, and performance detection executes national standard
GB/T1503-2008. testing result is shown in Table 1.
1 embodiment product tensile mechanical properties testing result of table
Particle sample (embodiment 7) progress performance pair is not added by the sample (Examples 1 to 6) to enhancing particle and
Than, by comparison, it was found that, the sample hardness of particle sample is added than the hardness of particle sample is not added and improves 1.5 times, and for
Wearability, the sample that particle is added are that 3 times of granular or more are not added, and service life (cool-hot fatigue) improves 4 times or so, makes
It is greatly improved with the service life.
According to performance test results, the ferrosteel roll material of particle is added on service life relative to particle is not added
Ferrosteel roll material greatly improves, and can be preferably applied for the market demand.
Claims (6)
1. a kind of method that WC enhancing particle is added in half steel material, it is characterised in that include the following steps:
Step A, preparing enhances particle with the WC of half steel material molten steel similar density, is crushed, is milled to WC enhancing particle
Make 1~3mm of its granularity, then drying, preheating are stand-by at 100 DEG C by WC enhancing particle；
Step B, half steel material of melting in induction melting furnace lifts temperature to 1550~1650 after melting molten steel reaches design requirement
DEG C, low-power keeps the temperature 1.5~3min, guarantees molten steel surface without steel slag；
Step C, the WC enhancing particle of 3~6%wt is uniformly added into the case where not having a power failure in 1min, then high-power power transmission, electricity
Magnetic stirs, and guarantees that melting molten steel temperature is no more than 1500 DEG C in transmission process, has a power failure after 1.5~3min of stirring, is poured；
The alloying component of half steel material in the step A and step B and the weight percentage of each alloying component are as follows: C1.5~
1.6%, Si0.9~1.1%, Mn0.9~1.1%, P≤0.05%, S≤0.06%, W+V+Nb≤0.02%, surplus Fe.
2. the method according to claim 1 that WC enhancing particle is added in half steel material, it is characterised in that: W+V+Nb≤
In 0.02, W, V, Nb can take its three kinds, two kinds or any one.
3. the method according to claim 1 that WC enhancing particle is added in half steel material, it is characterised in that: in step A
WC enhancing particle is sintering WC, be sintered WC preparation method be by C powder and W powder after evenly mixing, using discharge plasma sintering
Device is sintered, and sintering temperature is 1100~1300 DEG C, keeps the temperature 6~10min, and sintering WC is in open structure.
4. described in any item methods that WC enhancing particle is added in half steel material, feature exist according to claim 1~3
In: the density that WC enhances particle is 7.6~7.8g/cm3。
5. the method according to claim 1 that WC enhancing particle is added in half steel material, it is characterised in that: in step B
Low-power heat preservation low-power be 8~12kW.
6. the method according to claim 1 that WC enhancing particle is added in half steel material, it is characterised in that: in step C
High-power power transmission in it is high-power be 40~60kW.
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| CN107557691A (en) * | 2017-07-31 | 2018-01-09 | 常州诺丁精密机械制造有限公司 | A kind of preparation method of wear resistant alloy material |
| CN112626305A (en) * | 2020-11-27 | 2021-04-09 | 中钢集团邢台机械轧辊有限公司 | Method for adding VC particles into high-speed steel |
| CN113005371B (en) * | 2021-02-07 | 2022-11-01 | 常州亿富泰特钢有限公司 | Wear-resistant high-toughness steel material and preparation method thereof |
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| SE522667C2 (en) * | 2000-05-16 | 2004-02-24 | Proengco Tooling Ab | Process for the preparation of an iron-based chromium carbide containing dissolved tungsten and such an alloy |
| CN101008460A (en) * | 2006-09-30 | 2007-08-01 | 姜福臣 | Metal composite tube having a surface of internal bore with wear resistant materials and production method thereof |
| CN102071360B (en) * | 2011-01-14 | 2012-06-27 | 华南理工大学 | Tungsten carbide particle-enhanced iron-based powder metallurgy material and preparation method thereof |
| CN105618485B (en) * | 2016-01-29 | 2017-05-17 | 山东省四方技术开发有限公司 | Composite particle reinforced roller of hot-rolling seamless steel pipe sizing mill or reducing mill and preparation method thereof |
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