CN103741036A - Rare earth-containing alloy steel material for roller of wire processing equipment and preparation method thereof - Google Patents
Rare earth-containing alloy steel material for roller of wire processing equipment and preparation method thereof Download PDFInfo
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- CN103741036A CN103741036A CN201310700015.4A CN201310700015A CN103741036A CN 103741036 A CN103741036 A CN 103741036A CN 201310700015 A CN201310700015 A CN 201310700015A CN 103741036 A CN103741036 A CN 103741036A
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Abstract
The invention relates to a rare earth-containing alloy steel material for a roller of wire processing equipment. The rare earth-containing alloy steel material contains the following chemical elements in percentage by weight: 0.8-0.9% of carbon, 1.5-2% of tungsten, 1.5-2.5% of molybdenum, 1.0-2.0% of vanadium, 3.5-4.5% of chromium, 0.05-0.10% of niobium, 0.05-0.10% of lanthanum, 0.05-0.10% of cerium, 0.03-0.05% of titanium, 0.06-0.08% of tungsten, less than or equal to 0.030% of phosphorus, less than or equal to 0.030% of sulfur, and the balance of iron. The alloy steel material has high-temperature resistance, high red hard characteristic and high-temperature cracking resistance and is added with rare earth elements, so that the alloy steel material has high rigidity, good fatigue resistance, excellent surface abrasive resistance and good anti-stripping property, is suitable for being manufactured into supporting rolls, and has low cost due to low alloying elements. A refining agent used in the invention is used for casting production, can remarkably improve the rate of finished products and can obviously reduce oxide inclusions, and no air holes are formed on the casting surface.
Description
Technical field
The present invention relates to roll technology field, relate in particular to a kind of wire rod machine roll with containing rare earth alloy steel and preparation method thereof.
Background technology
Roll is the central module of wire rod machine, and gadolinium part is carried out to gadolinium processing processed, makes metal produce the main tool of viscous deformation.Roll working load is large, bears very large gadolinium pressing pressure and torsional moment, and has very strong shock load and very large mass force; In addition, the Working environment of roll is harsh, bear very high temperature, has again water coolant, is in the cold and hot lower work that accompanies each other, serious wear.
High carbon and chromium cast steel, the several types such as ordinary steel and Wimet.High carbon and chromium cast steel is owing to there being certain wear resistance, and low price, is therefore widely used, and high carbon and chromium running roller has 13Cr13WMoV and 18Cr20WMoV with the conventional material of steel.Because these two kinds of steel hardness and wear resistance mainly rely on the carbide Cr of chromium
7c
3and Cr
23c
6, thermostability is poor, generally more than 450 ℃, starts agglomeration and softening gradually.In the time of 550 ℃, hardness will be down to below HRC50.And the temperature of wire rod running roller under operation can reach 550 ℃ of left and right, this just makes running roller obviously reduce work-ing life.The secondary hardening temperature of ordinary steel is 550 ℃ of left and right, and hardness maintains HRC62 ~ 64, can improve significantly the work-ing life of running roller; Wimet also has good hot hardness and wear resistance.But because the manufacturing cost of ordinary steel and Wimet is too high, in the use of high line running roller material, be restricted.Therefore study excellent performance, the roll material that cost is cheaper just seems particularly important.
Summary of the invention
The object of the present invention is to provide a kind of wire rod machine roll with containing rare earth alloy steel and preparation method thereof, this alloy material has the heat crack resistance that wear resistance is good, good, resistant to elevated temperatures advantage.
Technical scheme of the present invention is as follows:
A kind of wire rod machine roll, with containing rare earth alloy steel, is characterized in that: chemical element composition and mass percent thereof that it contains are: carbon 0.8-0.9, tungsten 1.5-2, molybdenum 1.5-2.5, vanadium 1.0-2.0, chromium 3.5-4.5, niobium 0.05-0.10, lanthanum 0.05-0.10, cerium 0.05-0.10, titanium 0.03-0.05, tungsten 0.06-0.08, P≤0.030, S≤0.030, surplus are iron.
Production method containing rare earth alloy steel for described wire rod machine roll, is characterized in that:
(1), preparing the pig iron and scrap iron originates as ferrous substrate in 1:0.5-1.5 ratio, the pig iron is added to drop in stove and melt, carry out desulfurization, deoxidation, employing refining agent initial refining, add alloying constituent and carry out alloying, then add scrap iron fusing, add refining agent secondary refining, detection and adjust chemical element component content to qualified, casting, casting postheat treatment etc.;
(2) in alloying process, to the lot sequence that drops into alloying element in stove, be: (1) vanadium, chromium, cerium; (2) tungsten, niobium, lanthanum; (3) other remaining components; The each batch of timed interval of dropping into element is 22-25 minute, after feeding intake, stirs.
Described casting postheat treatment is: first by room temperature, with 200-210 ℃/h of speed, be warming up to 670-680 ℃, and insulation 40-50 minute, then with 220-230 ℃/h of speed, be warming up to 930-940 ℃, insulation 4-5 hour; With 170-180 ℃/h of speed, be cooled to 670-680 ℃ again, insulation 50-60 minute; With 180-190 ℃/h of speed, be cooled to 220-230 ℃ again, insulation 3-4 hour; With 100-110 ℃/h of speed, be warming up to 330-350 ℃ again, insulation 40-50 minute, then be warming up to 540-550 ℃ with 100-110 ℃/h of speed, insulation 3-4 hour, takes out air cooling and get final product.
Described refining agent is made by the raw material of following weight part: instrument comminuted steel shot 3-5, clay 10-12, Sodium Silicofluoride 3-4, sodium carbonate 2-3, sodium tetraborate 1-2, stalk ashes 4-5, potassium felspar sand 36-40, jade powder 3-4, carclazyte 6-8, ground dolomite 3-4; Preparation method mixes each raw material, is heated to 2600-2900 ℃ to molten state, stirs 10-15 minute, is poured into Quench in pure water, then is ground into 100-200 order powder, washes with water for several times, dries and get final product.
Beneficial effect of the present invention
Steel alloy provided by the invention has the performance of high temperature resistant, red hard height, anti-high temperature cracking, owing to having added rare earth element, makes steel alloy rigidity high, fatigue resistance is good, and surface abrasion resistance is good, and antistripping is good, be suitable for making support roll, because alloying element is lower, cost is lower.Refining agent of the present invention is for Foundry Production, and the degree of porosity obviously improving in yield rate, particularly foundry goods reduces 1-2 degree, can not produce pore at cast(ing) surface, and trapped oxide also obviously reduces, and oxide inclusion is 2 grades of left and right.
Embodiment
A kind of wire rod machine roll is with containing rare earth alloy steel, and chemical element composition and mass percent thereof that it contains are: carbon 0.8-0.9, tungsten 1.5-2, molybdenum 1.5-2.5, vanadium 1.0-2.0, chromium 3.5-4.5, niobium 0.05-0.10, lanthanum 0.05-0.10, cerium 0.05-0.10, titanium 0.03-0.05, tungsten 0.06-0.08, P≤0.030, S≤0.030, surplus are iron.
Described wire rod machine roll is as follows by the production method containing rare earth alloy steel:
(1), preparing the pig iron and scrap iron originates as ferrous substrate in 1:1 ratio, the pig iron is added to drop in stove and melt, carry out desulfurization, deoxidation, employing refining agent initial refining, add alloying constituent and carry out alloying, then add scrap iron fusing, add refining agent secondary refining, detection and adjust chemical element component content to qualified, casting, casting postheat treatment etc.;
(2) in alloying process, to the lot sequence that drops into alloying element in stove, be: (1) vanadium, chromium, cerium; (2) tungsten, niobium, lanthanum; (3) other remaining components; The each batch of timed interval of dropping into element is 23 minutes, after feeding intake, stirs.
Described casting postheat treatment is: first by room temperature, with 205 ℃/h of speed, be warming up to 675 ℃, be incubated 45 minutes, then be warming up to 935 ℃ with 225 ℃/h of speed, be incubated 4.5 hours; With 175 ℃/h of speed, be cooled to 675 ℃ again, be incubated 55 minutes; With 185 ℃/h of speed, be cooled to 225 ℃ again, be incubated 3.5 hours; With 105 ℃/h of speed, be warming up to 340 ℃ again, be incubated 45 minutes, then be warming up to 545 ℃ with 105 ℃/h of speed, be incubated 3.5 hours, take out air cooling and get final product.
Described refining agent by following weight part (kilogram) raw material make: described refining agent by following weight part (kilogram) raw material make: instrument comminuted steel shot 3, clay 10, Sodium Silicofluoride 4, sodium carbonate 2, sodium tetraborate 1, stalk ashes 4, potassium felspar sand 36, jade powder 3, carclazyte 6, ground dolomite 3; Preparation method mixes each raw material, is heated to 2600-2900 ℃ to molten state, stirs 10-15 minute, is poured into Quench in pure water, then is ground into 100-200 order powder, washes with water for several times, dries and get final product.
Wire rod machine roll of the present invention by the mechanical property containing rare earth alloy steel is: tensile strength 1280MPa, yield strength 925MPa, unit elongation 14%, relative reduction in area 30%, impact absorbing energy 61J, impelling strength 62J/cm2, hardness 288HB.
Claims (4)
1. wire rod machine roll, with containing a rare earth alloy steel, is characterized in that: chemical element composition and mass percent thereof that it contains are: carbon 0.8-0.9, tungsten 1.5-2, molybdenum 1.5-2.5, vanadium 1.0-2.0, chromium 3.5-4.5, niobium 0.05-0.10, lanthanum 0.05-0.10, cerium 0.05-0.10, titanium 0.03-0.05, tungsten 0.06-0.08, P≤0.030, S≤0.030, surplus are iron.
2. the production method containing rare earth alloy steel for wire rod machine roll according to claim 1, is characterized in that:
(1), preparing the pig iron and scrap iron originates as ferrous substrate in 1:0.5-1.5 ratio, the pig iron is added to drop in stove and melt, carry out desulfurization, deoxidation, employing refining agent initial refining, add alloying constituent and carry out alloying, then add scrap iron fusing, add refining agent secondary refining, detection and adjust chemical element component content to qualified, casting, casting postheat treatment etc.;
(2) in alloying process, to the lot sequence that drops into alloying element in stove, be: (1) vanadium, chromium, cerium; (2) tungsten, niobium, lanthanum; (3) other remaining components; The each batch of timed interval of dropping into element is 22-25 minute, after feeding intake, stirs.
3. the production method containing rare earth alloy steel for wire rod machine roll according to claim 2, it is characterized in that: described casting postheat treatment is: first by room temperature, with 200-210 ℃/h of speed, be warming up to 670-680 ℃, insulation 40-50 minute, with 220-230 ℃/h of speed, be warming up to 930-940 ℃ again, insulation 4-5 hour; With 170-180 ℃/h of speed, be cooled to 670-680 ℃ again, insulation 50-60 minute; With 180-190 ℃/h of speed, be cooled to 220-230 ℃ again, insulation 3-4 hour; With 100-110 ℃/h of speed, be warming up to 330-350 ℃ again, insulation 40-50 minute, then be warming up to 540-550 ℃ with 100-110 ℃/h of speed, insulation 3-4 hour, takes out air cooling and get final product.
4. the production method containing rare earth alloy steel for wire rod machine roll according to claim 2, is characterized in that: described refining agent is made by the raw material of following weight part: instrument comminuted steel shot 3-5, clay 10-12, Sodium Silicofluoride 3-4, sodium carbonate 2-3, sodium tetraborate 1-2, stalk ashes 4-5, potassium felspar sand 36-40, jade powder 3-4, carclazyte 6-8, ground dolomite 3-4; Preparation method mixes each raw material, is heated to 2600-2900 ℃ to molten state, stirs 10-15 minute, is poured into Quench in pure water, then is ground into 100-200 order powder, washes with water for several times, dries and get final product.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310700015.4A CN103741036B (en) | 2013-12-19 | 2013-12-19 | A kind of wire rod machine roll is with containing rare earth alloy steel and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310700015.4A CN103741036B (en) | 2013-12-19 | 2013-12-19 | A kind of wire rod machine roll is with containing rare earth alloy steel and preparation method thereof |
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| CN103741036A true CN103741036A (en) | 2014-04-23 |
| CN103741036B CN103741036B (en) | 2016-03-30 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1454723A (en) * | 2003-05-29 | 2003-11-12 | 安泰科技股份有限公司 | Composite roll ring of high-speed steel |
| WO2013167628A1 (en) * | 2012-05-07 | 2013-11-14 | Valls Besitz Gmbh | Tough bainitic heat treatments on steels for tooling |
| CN103397269A (en) * | 2013-07-01 | 2013-11-20 | 安徽三联泵业股份有限公司 | Low-cost and high-strength wear-resistant cast steel and preparation method thereof |
-
2013
- 2013-12-19 CN CN201310700015.4A patent/CN103741036B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1454723A (en) * | 2003-05-29 | 2003-11-12 | 安泰科技股份有限公司 | Composite roll ring of high-speed steel |
| WO2013167628A1 (en) * | 2012-05-07 | 2013-11-14 | Valls Besitz Gmbh | Tough bainitic heat treatments on steels for tooling |
| CN103397269A (en) * | 2013-07-01 | 2013-11-20 | 安徽三联泵业股份有限公司 | Low-cost and high-strength wear-resistant cast steel and preparation method thereof |
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| CN103741036B (en) | 2016-03-30 |
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Effective date of registration: 20160302 Address after: 1101, room 230022, building A, Sino Swiss building, 9 Hongfeng Road, Hefei, Anhui Applicant after: ANHUI VMWAY INFORMATION TECHNOLOGY CO.,LTD. Address before: The public sector of 243100 Anhui city of Ma'anshan province Dangtu County Development Zone North Road Applicant before: Maanshan Fangyuan Material Project Co.,Ltd. |
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Effective date of registration: 20190703 Address after: 22 2002 Xiangshi Village, Zhewang Town, Ganyu District, Lianyungang City, Jiangsu Province Patentee after: JIANGSU BINXIN STEEL GROUP CO.,LTD. Address before: 230022 Room 1101, Block A, Zhongrui Building, No. 9 Hongfeng Road, Hefei High-tech Zone, Anhui Province Patentee before: ANHUI VMWAY INFORMATION TECHNOLOGY CO.,LTD. |