CN108620560A - A kind of processing method of additional particle strengthening grain roll wear-resisting property - Google Patents
A kind of processing method of additional particle strengthening grain roll wear-resisting property Download PDFInfo
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- CN108620560A CN108620560A CN201810448959.XA CN201810448959A CN108620560A CN 108620560 A CN108620560 A CN 108620560A CN 201810448959 A CN201810448959 A CN 201810448959A CN 108620560 A CN108620560 A CN 108620560A
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- Prior art keywords
- iron
- resisting property
- carbide
- processing method
- roll
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/16—Casting in, on, or around objects which form part of the product for making compound objects cast of two or more different metals, e.g. for making rolls for rolling mills
-
- 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
- C21C1/08—Manufacture of cast-iron
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
- C22C37/06—Cast-iron alloys containing chromium
- C22C37/08—Cast-iron alloys containing chromium with nickel
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
- C22C37/10—Cast-iron alloys containing aluminium or silicon
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Continuous Casting (AREA)
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
Abstract
The present invention provides a kind of processing method of additional particle strengthening grain roll wear-resisting property,Enhance the various aspects of performance of roll according to carbide is usually added in grain roll process of manufacture,But the carbide being added is easy to reunite and is not easy to disperse,The tissue of cast iron can not be significantly improved,The present invention by being prepared into composite inoculant together by chromium carbide and silicon carbide by the processing technology and inovulant of core-spun yarn,Nodularization and inoculation are carried out by way of line feeding,Silicon carbide and chromium carbide is set to evenly spread to inside molten iron,Improve ball milling granule number and Oxygen potential,The mechanical property of roll is set to be improved,And pass through the Metamorphism treatment of NbC/Fe composite powder alterants,It hinders the growth of carbide and refines graphite,It is set size and to be evenly distributed in roll,Improve performance,The grain roll wear-resisting property of the present invention is high,Simple production process,With higher operability and feasibility,Application prospect is good,It is worthy to be popularized.
Description
Technical field
The present invention relates to roll manufacturing field more particularly to a kind of processing of additional particle strengthening grain roll wear-resisting property
Method.
Background technology
In national social and economic activities, steel material occupies extremely important status, inevitably needs using big
The roll of amount is by steel rolling forming material.The quality and production cost of steel are directly influenced by roll quality quality.Increasingly automatic
Change, System on Rolling Steel and the more and more severe work roll cooling condition of heavy-duty and serialization, manufacturing high-performance is made to roll
Roller becomes the most important research topic of roll industry.Roll is the important consumable part in the operation of rolling, and consuming cost accounts for about whole
The 5-15% of a Rolling Production cost, with continuously improving for rolling technique, roll requires also to get over to the adaptability of working environment
Come higher, since the temperature of rolled steel is up to 900-1100 DEG C, roll is directly in contact with it, and makes the surface temperature of roll can be with
Reach 500 DEG C, big roll-force should be born in the operation of rolling of roll, is subjected to strength again and wears, surface is also easy to produce oxygen
Change iron sheet, it is oxidized to certain thickness and will be peeled off from roller surface, and the oxide skin to fall off seriously affects the quality of stocking, causes
The roll change frequency of roll increases, and in addition cooling water is alternately in direct contact with hot rolling material during roll, and roller surface needs
Larger cold and hot stress is born, the surface failure of roll and heat fatigue have adverse effect on the surface quality of rolled products,
And the service life of roll is reduced, therefore it is required that used roll has good heat, mechanical property and abrasion resistance properties, but
The needs of actual use far can not also be met by being most of rolls currently on the market, and brittleness is big, easy to wear, extreme influence steel
The effect of rolling of material, so being badly in need of a kind of high-performance, high abrasion, composite roll with long service life meets rolling for steel in the market
System requires.
Invention content
The purpose of the present invention is to provide a kind of processing methods of additional particle strengthening grain roll wear-resisting property, to solve
Above-mentioned technical problem.
The present invention using following technical scheme in order to solve the above technical problems, realized：
A kind of processing method of additional particle strengthening grain roll wear-resisting property, including step in detail below：
(1) it will be launched into medium-sized induced electricity frequency stove after the dispensings such as scrap iron, vanadium titanium iron, nickel plate, ferrochrome, molybdenum-iron, ferrotungsten,
Then heating melting is added part ferrosilicon sampling analysis, is chemically defined as C to being completely melt after melting 20min：2.8-
3.6%；Si：0.7-1.1%；Mn：0.5-0.8%；Cr：1.6-2.5%；Ni：3-5%；Mo：0.2-0.70%；Ti：0.02-
0.05%；V：0.03-0.10%；W：0.2-0.4%；P≤0.04%；S≤0.025%；Surplus is Fe；
(2) it skims when molten iron temperature reaches 1500-1530 DEG C, final deoxidizing is then cooled to 1430-1470 DEG C, uses
Injection feeding technology carries out spheroidising, and nodulizer addition is 1.4wt%, and direct-reading capacitance meter detects ingredient after spheroidising, adds
Enter the content that ferrosilicon adjusts carbon, element silicon, composite Nano silicon carbide, which is then bred core-spun yarn, carries out inoculation, keeps the temperature 3-
5min；
(3) descum after inoculation is added particle alterant to molten iron surface, keeps at this temperature
Alterant is gently pressed into molten iron after keeping 10-12min at deep about 100-150mm, keeps 3-5min by 10-12min；
(4) molten iron temperature before control is come out of the stove after Metamorphism treatment is 1380-1450 DEG C, using this partial molten iron as rolling
The outer layer of roller pours liquid, and internal layer pours liquid and selects regular gray iron liquid, and poring rate is steady, is poured after the solidification of outer layer potting syrup
Internal layer grey cast-iron liquid is noted, pouring temperature is 1360-1380 DEG C, you can obtains abrasion-resistant roller.
A kind of processing method of additional particle strengthening grain roll wear-resisting property, nodulizer described in step (2) at
It is divided into：Rhenium 1.9-2.2%, cerium 1.1-1.4%, magnesium 6-6.2%, calcium 2.2-2.5%, barium 1.3-1.4%, silicon 42-44%, iron are
Surplus.
A kind of processing method of additional particle strengthening grain roll wear-resisting property, the complex silicon carbide described in step (2)
The preparation method for breeding core-spun yarn is：By the silicon carbide of 50nm and 10 μm of silicon carbide according to mass ratio 1：9 are mixed, then
By 10 μm of silicon carbide, 50nm silicon carbide, composite Nano silicon carbide, chromium carbide and iron silicon inoculant according to mass ratio 2：3：4：4：
0.2 is added in cored machine and is wrapped up with cold-rolled low carbon steel band to obtain the final product.
The additive amount of a kind of processing method of additional particle strengthening grain roll wear-resisting property, the inovulant is molten iron
The 0.8wt% of quality.
A kind of processing method of additional particle strengthening grain roll wear-resisting property, the alterant described in step (3) are
The content of NbC is 28-35wt% in NbC/Fe composite powders, and the density of niobium carbide powder is adjusted by adding iron powder, makes floating
On molten iron surface, metamorphic reaction is fully carried out.
A kind of processing method of additional particle strengthening grain roll wear-resisting property, the alterant NbC/Fe composite powders
Additive amount is the 1.2wt% of molten steel quality.
The beneficial effects of the invention are as follows：
The present invention improves the resistance to of roll in grain roll process of manufacture by adding the metallic elements such as chromium, molybdenum and tungsten
Performance is ground, but it is not high by the form of alloy addition content, hardness and wearability requirement is not achieved, is added in the form of carbide
Enter to be easy to reunite and be not easy to disperse, the tissue of cast iron can not be significantly improved, reduce the size of graphite nodule, improve graphite nodule rate, this
Invention is passed through by the way that chromium carbide and silicon carbide are prepared into composite inoculant together by the processing technology and inovulant of core-spun yarn
The mode of line feeding carries out nodularization and inoculation, and silicon carbide and chromium carbide is made to evenly spread to inside molten iron, improves ball milling particle
Number and Oxygen potential, make the mechanical property of roll be improved, and pass through the Metamorphism treatment of NbC/Fe composite powder alterants, resistance
Hinder the growth of carbide and refine graphite, it is made size and to be evenly distributed in roll, improve performance, cast iron of the invention rolls
Roller wear-resisting property height, simple production process have higher operability and feasibility, and application prospect is good, is worthy to be popularized.
Specific implementation mode
In order to make the technical means, the creative features, the aims and the efficiencies achieved by the present invention be easy to understand, tie below
Specific embodiment is closed, the present invention is further explained, but following embodiments are only the preferred embodiment of the present invention, and not all.
Based on the implementation example in the implementation mode, those skilled in the art's obtained other realities without making creative work
Example is applied, protection scope of the present invention is belonged to.Experimental method in following embodiments is unless otherwise specified conventional method,
The materials, reagents and the like used in the following examples is commercially available unless otherwise specified.
A kind of processing method of additional particle strengthening grain roll wear-resisting property, including step in detail below：
(1) it will be launched into medium-sized induced electricity frequency stove after the dispensings such as scrap iron, vanadium titanium iron, nickel plate, ferrochrome, molybdenum-iron, ferrotungsten,
Then heating melting is added part ferrosilicon sampling analysis, is chemically defined as C to being completely melt after melting 20min：2.8-
3.6%；Si：0.7-1.1%；Mn：0.5-0.8%；Cr：1.6-2.5%；Ni：3-5%；Mo：0.2-0.70%；Ti：0.02-
0.05%；V：0.03-0.10%；W：0.2-0.4%；P≤0.04%；S≤0.025%；Surplus is Fe；
(2) it skims when molten iron temperature reaches 1500-1530 DEG C, final deoxidizing is then cooled to 1430-1470 DEG C, uses
Injection feeding technology carries out spheroidising, and nodulizer addition is 1.4wt%, and direct-reading capacitance meter detects ingredient after spheroidising, adds
Enter the content that ferrosilicon adjusts carbon, element silicon, composite Nano silicon carbide, which is then bred core-spun yarn, carries out inoculation, and inovulant adds
It is 0.8wt% to enter amount, keeps the temperature 3-5min；
(3) descum after inoculation is added NbC/Fe composite powder particle alterants to molten iron surface, adds
It is 1.2wt% to enter amount, keeps 10-12min at this temperature, is gently pressed into alterant in molten iron deeply about after keeping 10-12min
At 100-150mm, 3-5min is kept；
(4) molten iron temperature before control is come out of the stove after Metamorphism treatment is 1380-1450 DEG C, using this partial molten iron as rolling
The outer layer of roller pours liquid, and internal layer pours liquid and selects regular gray iron liquid, and poring rate is steady, is poured after the solidification of outer layer potting syrup
Internal layer grey cast-iron liquid is noted, pouring temperature is 1360-1380 DEG C, you can obtains abrasion-resistant roller.
A kind of processing method of additional particle strengthening grain roll wear-resisting property, nodulizer described in step (2) at
It is divided into：Rhenium 1.9-2.2%, cerium 1.1-1.4%, magnesium 6-6.2%, calcium 2.2-2.5%, barium 1.3-1.4%, silicon 42-44%, iron are
Surplus.
A kind of processing method of additional particle strengthening grain roll wear-resisting property, the complex silicon carbide described in step (2)
The preparation method for breeding core-spun yarn is：By the silicon carbide of 50nm and 10 μm of silicon carbide according to mass ratio 1：9 are mixed, then
By 10 μm of silicon carbide, 50nm silicon carbide, composite Nano silicon carbide, chromium carbide and iron silicon inoculant according to mass ratio 2：3：4：4：
0.2 is added in cored machine and is wrapped up with cold-rolled low carbon steel band to obtain the final product.
A kind of processing method of additional particle strengthening grain roll wear-resisting property, the alterant described in step (3) are
The content of NbC is 28-35wt% in NbC/Fe composite powders, and the density of niobium carbide powder is adjusted by adding iron powder, makes floating
On molten iron surface, metamorphic reaction is fully carried out.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry
For personnel it should be appreciated that the present invention is not limited to the above embodiments, described in the above embodiment and specification is only the present invention
Preference, be not intended to limit the present invention, without departing from the spirit and scope of the present invention, the present invention also has various
Changes and improvements, these changes and improvements all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by institute
Attached claims and its equivalent thereof.
Claims (6)
1. a kind of processing method of additional particle strengthening grain roll wear-resisting property, which is characterized in that including step in detail below：
(1) it will be launched into medium-sized induced electricity frequency stove after the dispensings such as scrap iron, vanadium titanium iron, nickel plate, ferrochrome, molybdenum-iron, ferrotungsten, heating
Then melting is added part ferrosilicon sampling analysis, is chemically defined as C to being completely melt after melting 20min：2.8-3.6%；
Si：0.7-1.1%；Mn：0.5-0.8%；Cr：1.6-2.5%；Ni：3-5%；Mo：0.2-0.70%；Ti：0.02-0.05%；
V：0.03-0.10%；W：0.2-0.4%；P≤0.04%；S≤0.025%；Surplus is Fe；
(2) it skims when molten iron temperature reaches 1500-1530 DEG C, final deoxidizing is then cooled to 1430-1470 DEG C, using line feeding
Method carries out spheroidising, and nodulizer addition is 1.4wt%, and direct-reading capacitance meter detects ingredient after spheroidising, and silicon is added
Iron adjusts the content of carbon, element silicon, and composite Nano silicon carbide, which is then bred core-spun yarn, carries out inoculation, keeps the temperature 3-5min；
(3) descum after inoculation is added particle alterant to molten iron surface, keeps 10- at this temperature
Alterant is gently pressed into molten iron after keeping 10-12min at deep about 100-150mm, keeps 3-5min by 12min；
(4) molten iron temperature before control is come out of the stove after Metamorphism treatment is 1380-1450 DEG C, using this partial molten iron as roll
Outer layer pours liquid, and internal layer pours liquid and selects regular gray iron liquid, and poring rate is steady, after the solidification of outer layer potting syrup in cast
Layer grey cast-iron liquid, pouring temperature are 1360-1380 DEG C, you can obtain abrasion-resistant roller.
2. a kind of processing method of additional particle strengthening grain roll wear-resisting property according to claim 1, feature exist
In the ingredient of the nodulizer described in step (2) is：Rhenium 1.9-2.2%, cerium 1.1-1.4%, magnesium 6-6.2%, calcium 2.2-
2.5%, barium 1.3-1.4%, silicon 42-44%, iron are surplus.
3. a kind of processing method of additional particle strengthening grain roll wear-resisting property according to claim 1, feature exist
In the preparation method that the complex silicon carbide described in step (2) breeds core-spun yarn is：By the silicon carbide of 50nm and 10 μm of carbonization
Silicon is according to mass ratio 1：9 are mixed, then by 10 μm of silicon carbide, 50nm silicon carbide, composite Nano silicon carbide, chromium carbide and iron
Silicon inoculant is according to mass ratio 2：3：4：4：0.2 is added in cored machine and is wrapped up with cold-rolled low carbon steel band to obtain the final product.
4. a kind of processing method of additional particle strengthening grain roll wear-resisting property according to claim 3, feature exist
In the additive amount of the inovulant is the 0.8wt% of molten steel quality.
5. a kind of processing method of additional particle strengthening grain roll wear-resisting property according to claim 1, feature exist
In the content that the alterant described in step (3) is NbC in NbC/Fe composite powders is 28-35wt%, by adding iron powder tune
The density for saving niobium carbide powder, makes to swim in molten iron surface, fully carries out metamorphic reaction.
6. a kind of processing method of additional particle strengthening grain roll wear-resisting property according to claim 5, feature exist
In the alterant NbC/Fe composite powder additive amounts are the 1.2wt% of molten steel quality.
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| CN201810448959.XA CN108620560B (en) | 2018-05-11 | 2018-05-11 | Processing method for strengthening wear resistance of cast iron roller by adding particles |
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| CN201810448959.XA CN108620560B (en) | 2018-05-11 | 2018-05-11 | Processing method for strengthening wear resistance of cast iron roller by adding particles |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109371313A (en) * | 2018-12-05 | 2019-02-22 | 含山县天宇机械铸造厂 | A kind of preparation process of wear-resistant automobile clutch pressure plate |
| CN110052589A (en) * | 2019-04-28 | 2019-07-26 | 河北恒工机械装备科技有限公司 | Equal static pressure holding furnace and method for horizontal casting spheroidal graphite cast-iron profile |
| CN111139394A (en) * | 2019-12-24 | 2020-05-12 | 中钢集团邢台机械轧辊有限公司 | Preparation method of high-performance rough rolling working roll |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111139394A (en) * | 2019-12-24 | 2020-05-12 | 中钢集团邢台机械轧辊有限公司 | Preparation method of high-performance rough rolling working roll |
| CN111139394B (en) * | 2019-12-24 | 2022-01-11 | 中钢集团邢台机械轧辊有限公司 | Preparation method of high-performance rough rolling working roll |
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