CN108103397A - It is a kind of to be used to manufacture high-strength abrasion-proof steel material of disk roller and preparation method thereof - Google Patents
It is a kind of to be used to manufacture high-strength abrasion-proof steel material of disk roller and preparation method thereof Download PDFInfo
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- CN108103397A CN108103397A CN201711242053.4A CN201711242053A CN108103397A CN 108103397 A CN108103397 A CN 108103397A CN 201711242053 A CN201711242053 A CN 201711242053A CN 108103397 A CN108103397 A CN 108103397A
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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
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/001—Continuous casting of metals, i.e. casting in indefinite lengths of specific alloys
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/005—Modifying the physical properties by deformation combined with, or followed by, heat treatment of ferrous alloys
-
- 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
-
- 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
-
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
-
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
-
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention discloses a kind of for manufacturing the high-strength abrasion-proof steel material of disk roller, the chemical element component and its mass percent contained includes：Carbon 0.55 0.65%, silicon 0.25 0.40%, manganese 1.30 1.60%, chromium 0.50 0.80%, molybdenum 0.30 0.40%, nickel≤0.35%, copper≤0.25%, phosphorus≤0.030%, sulphur≤0.030%, surplus is iron, it has the advantages that high-strength tenacity, excellent abrasive resistance and good plasticity, wear extent reduces more than 30% compared with 40Cr steels disk roller, and the service life of disk roller extends more than 50%.The preparation method of the steel material is also disclosed, using Bof and external refining, is equipped with continuous casting technology, it is ensured that the content of harmful components sulphur, phosphorus can be especially accurately controlled within 0.030% by its chemical Composition Control respectively in scope of design.
Description
Technical field
The invention belongs to align field of mechanical technique more particularly to a kind of high-strength abrasion-proof steel iron material for being used to manufacture disk roller
Material and preparation method thereof.
Background technology
Straightener technology develops to today, has belonged to domestic external mature technology field, is mainly divided to two major classes, one kind is disk roller
Formula, another kind of is multi roll.But main working parts disk roller material, technique and the rare research of performance are reported：It is " a kind of
Simple and practical steel wire roller type straightener "《Metal product》In October in 2000 the 5th phase of the 26th certificate, " identification of 40Cr steel rod parts slag inclusion "
《Physical testing》02 phase in 1988, " ferrosteel roll Design of Chemical Composition "《This steel technology》05 phase in 1997.
Disk roller material multiselect carbon and medium carbon alloy steel, GCr15,9SiCr, Cr12MoV etc. in general 45,40Cr etc. at present
High-carbon low-alloy steel or high-carbon high-alloy steel.Middle carbon and medium carbon alloy steel plasticity are good, obdurability and wear no resistance, large scale steel rider
The depth of quenching it is limited, the high rigidity working lining of formation is relatively thin and uneven, and rear surface of quenching and inner hardness change very greatly, alloy
Steel rider because after abrasion hardness reduction cause its service life reduction；High-carbon low-alloy steel or high-carbon high-alloy steel hardenability are good, heat
Core and case hardness indifference or difference very little, have good obdurability, higher wearability, but plasticity is poor, valency after processing
Lattice are high, are mostly used to manufacture roll, there are no high-carbon low-alloy steel or high-carbon high-alloy steel making straightening steel wire disk roller, this and high-carbon
High-alloy steel selling at exorbitant prices, performance surplus are related.
Based on above-mentioned technical field actual conditions, it is necessary to find the synthesis mechanics of a kind of high-strength tenacity and excellent abrasive resistance
The disk roller steel of function admirable extends disk roller service life.
The content of the invention
The technical problems to be solved by the invention are to overcome the shortcomings of to mention in background above technology and defect, provide one
The high-strength abrasion-proof steel material of kind for manufacturing disk roller and preparation method thereof.
In order to solve the above technical problems, technical solution proposed by the present invention is to provide a kind of high intensity for being used to manufacture disk roller
Wear resisting steel iron material, the chemical element component and its mass percent contained include (being shown in Table 1)：Carbon 0.55-0.65%, silicon
0.25-0.40%, manganese 1.30-1.60%, chromium 0.50-0.80%, molybdenum 0.30-0.40%, nickel≤0.35%, copper≤0.25%,
Phosphorus≤0.030%, sulphur≤0.030%, surplus are iron.
Table 1：The present invention is used to manufacture the chemical element component (mass percent) of the high-strength abrasion-proof steel material of disk roller
| C | Si | Mn | Cr | Mo | Ni | Cu | P | S |
| 0.55-0.65 | 0.25-0.40 | 1.30-1.60 | 0.50-0.80 | 0.30-0.40 | ≤0.35 | ≤0.25 | ≤0.030 | ≤0.030 |
Mn contents are 1.30-1.60% in table 1, by solution strengthening matrix, can effectively improve the tough of steel material
Property, quenching degree and wearability；However the harmful effect of temper brittleness tendency can be increased by adding in Mn, the present invention is refined by adding in
For crystal grain elements Mo to eliminate the harmful effect, adding in 0.30-0.40%Mo can crystal grain thinning, moreover it is possible to reduce temper brittleness；
Intensity and hardness that double carbide effectively improves steel can be cooperatively formed with Mo by adding in the Cr of 0.50-0.80%, and Cr is also to reduce
Superheated susceptivity strengthens the element that matrix improves quenching degree.
Above-mentioned high-strength abrasion-proof steel material, it is preferred that its chemical element component contained and its mass percent bag
It includes：Carbon 0.62%, silicon 0.37%, manganese 1.53%, chromium 0.69%, molybdenum 0.38%, nickel 0.3%, copper 0.18%, phosphorus 0.025%, sulphur
0.024%, surplus is iron.
Based on a total technical concept, the present invention correspondingly provides a kind of system of above-mentioned high-strength abrasion-proof steel material
Preparation Method includes the following steps：
(1) steel is added in oxygen top-blown converter and smelted, then carry out the outer ladle refining of stove；
(2) the liquid steel obtained after the step (1) is subjected to direct casting；
(3) steel obtained after the step (2) is cast carries out hot rolling；
(4) by the steel obtained after the step (3) hot rolling by spheroidizing after, carry out final heat treatment to get to institute
The high-strength abrasion-proof steel material stated.
Above-mentioned preparation method, it is preferred that in the step (1), carbon, nickel, copper, phosphorus, sulphur and ferro element derive from steel
Iron, Bof stage add in ferrosilicon and manganese-ferro deoxidation by element mass percent.
Preferably, in the step (1), smelting temperature is 1600 DEG C~1660 DEG C.
Preferably, in the step (1), the stove outer ladle refining stage adds in molybdenum-iron by element mass percent and ferrochrome mixes
It closes, the temperature of the outer ladle refining of stove is 1540 DEG C~1570 DEG C.
Preferably, in the step (2), the temperature of direct casting is controlled at 1500 DEG C~1520 DEG C.
Preferably, in the step (3), hot rolling includes heating period, rolling sequence and finish to gauge stage, the heating period
Temperature control at 1150 DEG C~1180 DEG C, the temperature control of rolling sequence is at 1100 DEG C~1140 DEG C, the temperature in finish to gauge stage
Control is at 870 DEG C~920 DEG C.
Preferably, in the step (4), the concrete operations of spheroidizing include the following steps：By the steel of rolled 710
DEG C~740 DEG C at keep the temperature 8-12h, be then furnace-cooled to 450 DEG C~500 DEG C and come out of the stove.
Preferably, in the step (4), final heat treatment includes heating quenching stage and tempering stage, the quenching rank
At 830 DEG C~860 DEG C, the temperature of tempering stage is controlled at 400 DEG C~600 DEG C for the temperature control of section.
The present invention for manufacturing the smelting of the high-strength abrasion-proof steel material of disk roller, using Bof and
External refining is equipped with continuous casting technology, it is ensured that its chemical Composition Control is in scope of design.Continuous casting technology is one molten steel is straight
The advanced technology of castable is connect, compared with conventional method, continuous casting technology, which has, greatly improves recovery rate of iron and slab quality,
It is energy saving to wait significant advantages.
Compared with prior art, beneficial effects of the present invention are：
1st, it is of the invention for manufacturing the high-strength abrasion-proof steel material of disk roller, have high-strength tenacity, excellent abrasive resistance and
The advantages of good plasticity, wear extent reduce more than 30% compared with 40Cr steels disk roller, and the service life of disk roller extends more than 50%, has
Effect is solved the problems, such as in background technology.
2nd, preparation method of the invention, is advanced smelting technique, using ladle essence outside Bof and stove
Refining, is equipped with continuous casting technology, it is ensured that its chemical Composition Control, especially can be by the content of harmful components sulphur, phosphorus in scope of design
It is accurately controlled in respectively within 0.030%.
3rd, preparation method of the invention employs continuous casting technology, and continuous casting technology is an elder generation the direct castable of molten steel
Into technology, compared with conventional method, continuous casting technology, which has, greatly improves recovery rate of iron and slab quality, and energy saving grade is notable
Advantage.
Specific embodiment
It is of the invention for the ease of understanding, the present invention is done below in conjunction with preferred embodiment and more comprehensively, is meticulously described,
But protection scope of the present invention is not limited to specific examples below.
Unless otherwise defined, all technical terms used hereinafter are generally understood meaning phase with those skilled in the art
Together.Technical term used herein is intended merely to the purpose of description specific embodiment, is not intended to the limitation present invention's
Protection domain.
Unless otherwise specified, various raw material, reagent, the instrument and equipment etc. used in the present invention can pass through city
Field is commercially available or can be prepared by existing method.
Embodiment：
A kind of present invention for manufacturing the high-strength abrasion-proof steel material of disk roller, the chemical element component contained and its
Mass percent includes：Carbon 0.62%, silicon 0.37%, manganese 1.53%, chromium 0.69%, molybdenum 0.38%, nickel 0.3%, copper 0.18%,
Phosphorus 0.025%, sulphur 0.024%, surplus are iron.
Its preparation method includes the following steps：
(1) steel is added in oxygen top-blown converter and smelted, and add in ferrosilicon and manganese-ferro deoxidation, then carried out outside stove
Ladle refining adds in molybdenum-iron and ferrochrome mixing by mass percentage；Converter smelting temperature is 1600 DEG C~1660 DEG C, the outer ladle of stove
The temperature of refining is 1540 DEG C~1570 DEG C；Carbon, nickel, copper, phosphorus, sulphur and ferro element derive from steel；
(2) the liquid steel obtained after the step (1) is subjected to direct casting at 1500 DEG C~1520 DEG C；
(3) steel obtained after the step (2) is cast carries out hot rolling, and hot rolling includes heating period, rolling sequence and end
Roll the stage, the control of the temperature of the heating period at 1150 DEG C~1180 DEG C, the temperature control of rolling sequence 1100 DEG C~
1140 DEG C, the temperature in finish to gauge stage is controlled at 870 DEG C~920 DEG C；
(4) section bar obtained after the step (3) hot rolling is subjected to spheroidizing, spheroidizing concrete operations are by hot rolling
The steel of state keeps the temperature 8-12h at 710 DEG C~740 DEG C, is then furnace-cooled to 450 DEG C~500 DEG C and comes out of the stove；Then carry out at final heat
Reason, including heating quenching stage and tempering stage, the temperature range of the hardening phase is controlled at 830 DEG C~860 DEG C, is tempered rank
The temperature range control of section is at 400 DEG C~600 DEG C to get to the high-strength abrasion-proof steel material.
High-strength abrasion-proof steel material obtained above, through 830 DEG C~860 DEG C heating quenchings, 400 DEG C~600 DEG C tempering
Mechanical property is shown in Table 2 afterwards, and conditioned treated that mechanical property is compared with 40Cr steel.
Table 2：High-strength abrasion-proof steel material and the 40Cr steel of the present invention be conditioned, and treated that mechanical property compares
Table 2 statistics indicate that, after mutually synthermal tempering, the mechanical properties of two kinds of steel has very big difference, and the present invention is high-strength
The tensile strength and hardness for spending wear resisting steel iron material are far above general disk roller steel 40Cr, and plasticity is basically unchanged.The present invention is high-strength
Degree wear resisting steel iron material shows good comprehensive mechanical property.
Select two straighteners, installation the present embodiment for manufacturing made of the high-strength abrasion-proof steel material of disk roller
Disk roller, another installation 40Cr steel disk roller carry out wire rods aligning contrast experiment, measuring roll foot wheel abrasion situation.Two kinds of steel
Chemical composition is shown in Table 3.
Table 3：Embodiment 1 is used to manufacture the chemical element component (mass percent) of the high-strength abrasion-proof steel material of disk roller
| The trade mark | C | Si | Mn | Cr | Mo | Ni | Cu | P | S |
| Embodiment 1 | 0.62 | 0.37 | 1.53 | 0.69 | 0.38 | 0.3 | 0.18 | 0.025 | 0.024 |
| 40Cr | 0.41 | 0.25 | 0.70 | 1.00 | — | — | — | 0.024 | 0.024 |
Often add up 50 myriametre steel wires of aligning, measure a disk roller wear extent, the results are shown in Table 4.
Table 4：Embodiment 1 and the disk roller abrasion condition of 40Cr steel compare
Table 3 and table 4 show that through practical application the comprehensive performance that disk roller is made in steel material of the invention is substantially better than
40Cr steel disk rollers.Wear extent is surveyed, disk roller of the present invention reduces more than 30% compared with 40Cr steels disk roller, and the service life of disk roller is prolonged
Long more than 50%.
The preparation method of the present invention, is advanced smelting technique, using Bof and external refining, is equipped with
Continuous casting technology, it is ensured that its chemical Composition Control can especially distinguish the content of harmful components sulphur, phosphorus accurate in scope of design
Control is within 0.030%；Continuous casting technology is an advanced technology the direct castable of molten steel, compared with conventional method,
Continuous casting technology, which has, greatly improves recovery rate of iron and slab quality, energy saving to wait significant advantages.
Claims (10)
- It is 1. a kind of for manufacturing the high-strength abrasion-proof steel material of disk roller, which is characterized in that its chemical element component contained and Its mass percent includes：Carbon 0.55-0.65%, silicon 0.25-0.40%, manganese 1.30-1.60%, chromium 0.50-0.80%, molybdenum 0.30-0.40%, nickel≤0.35%, copper≤0.25%, phosphorus≤0.030%, sulphur≤0.030%, surplus are iron.
- 2. it is used to manufacture the high-strength abrasion-proof steel material of disk roller according to claim 1, which is characterized in that its change contained Learning elemental composition and its mass percent includes：Carbon 0.62%, silicon 0.37%, manganese 1.53%, chromium 0.69%, molybdenum 0.38%, nickel 0.3%th, copper 0.18%, phosphorus 0.025%, sulphur 0.024%, surplus are iron.
- 3. a kind of preparation method of high-strength abrasion-proof steel material according to claim 1 or 2, includes the following steps：(1) steel is added in oxygen top-blown converter and smelted, then carry out the outer ladle refining of stove；(2) the liquid steel obtained after the step (1) is subjected to direct casting；(3) steel obtained after the step (2) is cast carries out hot rolling；(4) by the steel obtained after the step (3) hot rolling by spheroidizing after, carry out final heat treatment to get to described High-strength abrasion-proof steel material.
- 4. preparation method according to claim 3, which is characterized in that in the step (1), carbon, nickel, copper, phosphorus, sulphur and iron Element derives from steel, and the Bof stage adds in ferrosilicon and manganese-ferro deoxidation by element mass percent.
- 5. preparation method according to claim 3, which is characterized in that in the step (1), smelting temperature for 1600 DEG C~ 1660℃。
- 6. preparation method according to claim 3, which is characterized in that in the step (1), the stove outer ladle refining stage presses Element mass percent adds in molybdenum-iron and ferrochrome mixing, and the temperature of the outer ladle refining of stove is 1540 DEG C~1570 DEG C.
- 7. preparation method according to claim 3, which is characterized in that in the step (2), the temperature control of direct casting At 1500 DEG C~1520 DEG C.
- 8. preparation method according to claim 3, which is characterized in that in the step (3), hot rolling include the heating period, Rolling sequence and finish to gauge stage, at 1150 DEG C~1180 DEG C, the temperature of rolling sequence controls for the temperature control of the heating period At 1100 DEG C~1140 DEG C, the temperature in finish to gauge stage is controlled at 870 DEG C~920 DEG C.
- 9. preparation method according to claim 3, which is characterized in that in the step (4), the concrete operations of spheroidizing Include the following steps：The steel of rolled is kept the temperature into 8-12h at 710 DEG C~740 DEG C, 450 DEG C~500 DEG C is then furnace-cooled to and goes out Stove.
- 10. according to the preparation method any one of claim 3-9, which is characterized in that in the step (4), final heat Processing includes heating quenching stage and tempering stage, and the temperature of the hardening phase is controlled at 830 DEG C~860 DEG C, tempering stage Temperature control at 400 DEG C~600 DEG C.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711242053.4A CN108103397A (en) | 2017-11-30 | 2017-11-30 | It is a kind of to be used to manufacture high-strength abrasion-proof steel material of disk roller and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711242053.4A CN108103397A (en) | 2017-11-30 | 2017-11-30 | It is a kind of to be used to manufacture high-strength abrasion-proof steel material of disk roller and preparation method thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57123921A (en) * | 1981-01-23 | 1982-08-02 | Daido Steel Co Ltd | Production of structural steel |
| CN101818312A (en) * | 2010-01-19 | 2010-09-01 | 钢铁研究总院 | Corrosion resistant heavy rail steel with excellent strength-toughness, fatigue resistance and abrasive resistance |
| CN102597543A (en) * | 2009-09-10 | 2012-07-18 | 独立行政法人物质·材料研究机构 | High-strength bolt |
-
2017
- 2017-11-30 CN CN201711242053.4A patent/CN108103397A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57123921A (en) * | 1981-01-23 | 1982-08-02 | Daido Steel Co Ltd | Production of structural steel |
| CN102597543A (en) * | 2009-09-10 | 2012-07-18 | 独立行政法人物质·材料研究机构 | High-strength bolt |
| CN101818312A (en) * | 2010-01-19 | 2010-09-01 | 钢铁研究总院 | Corrosion resistant heavy rail steel with excellent strength-toughness, fatigue resistance and abrasive resistance |
Non-Patent Citations (1)
| Title |
|---|
| 夏家群等: "《节能监测技术》", 31 January 2016, 冶金工业出版社 * |
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