CN103725968B - A kind of corrosion-resistant wire rod machine roll alloy steel material and preparation method thereof - Google Patents
A kind of corrosion-resistant wire rod machine roll alloy steel material and preparation method thereof Download PDFInfo
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- CN103725968B CN103725968B CN201310701690.9A CN201310701690A CN103725968B CN 103725968 B CN103725968 B CN 103725968B CN 201310701690 A CN201310701690 A CN 201310701690A CN 103725968 B CN103725968 B CN 103725968B
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Abstract
A kind of corrosion-resistant wire rod machine roll alloy steel material, the chemical element composition that it contains and mass percent thereof are: carbon 0.8-0.9, tungsten 2.5-3, molybdenum 1.0-1.3, vanadium 1.5-2.5, chromium 5.5-6.5, niobium 0.05-0.10, holmium 0.05-0.10, Sn0.04-0.08, Mn1.3-1.5, P≤0.030, S≤0.030, surplus are iron.The present invention by adding the multiple alloying elements such as holmium, niobium, tungsten on the basis of high carbon steel, and through secondary refining, conservative control casts postheat treatment temperature, throwing raw materials in batches, make steel alloy have the characteristic of rapid steel, high temperature resistant, red hard height, rigidity and toughness are worked good, and it is good to have surface abrasion resistance, resistance to flaking is good, cold shortness is low, cold-hot alternating corrosion, is suitable for the roll of wire rod machine, because alloying element is lower, cost is lower.
Description
Technical field
The present invention relates to roll technology field, particularly relate to a kind of corrosion-resistant wire rod machine roll alloy steel material and preparation method thereof.
Background technology
Roll is the central module of wire rod machine, carries out gadolinium processing to gadolinium part, 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, have water coolant again, 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 the material that high carbon and chromium running roller steel is conventional has 13Cr13WMoV and 18Cr20WMoV.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 DEG C, starts agglomeration and softens gradually.550 DEG C time, hardness will be down to below HRC50.And the temperature of wire rod running roller under running can reach about 550 DEG C, this just makes running roller obviously reduce work-ing life.The secondary hardening temperature of ordinary steel is at about 550 DEG C, and hardness maintains HRC62 ~ 64, can improve the work-ing life of running roller significantly; Wimet also has good hot hardness and wear resistance.But because the manufacturing cost of ordinary steel and Wimet is too high, the use of high line running roller material is 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 corrosion-resistant wire rod machine roll alloy steel material and preparation method thereof, this alloy material has corrosion-resistant, good heat crack resistance, resistant to elevated temperatures advantage.
Technical scheme of the present invention is as follows:
A kind of corrosion-resistant wire rod machine roll alloy steel material, is characterized in that: the chemical element composition that it contains and mass percent thereof are: carbon 0.8-0.9, tungsten 2.5-3, molybdenum 1.0-1.3, vanadium 1.5-2.5, chromium 5.5-6.5, niobium 0.05-0.10, holmium 0.05-0.10, Sn0.04-0.08, Mn1.3-1.5, P≤0.030, S≤0.030, surplus are iron.
The production method of described corrosion-resistant wire rod machine roll alloy steel material, is characterized in that:
(1), the preparation pig iron and scrap iron are originated as ferrous substrate in 1:0.5-1.5 ratio, the pig iron is added 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 adjust chemical element component content to qualified, casting, casting postheat treatment etc.;
(2) lot sequence, dropping into alloying element in alloying process in stove is: (1) vanadium, chromium; (2) tungsten, niobium, holmium; (3) other remaining components; The each batch of timed interval of dropping into element is 22-25 minute, stirs after feeding intake.
Described casting postheat treatment is: first by room temperature with 200-210 DEG C/h of ramp to 700-710 DEG C, insulation 40-50 minute, then with 220-230 DEG C/h of ramp to 950-960 DEG C, insulation 4-5 hour; 580-590 DEG C is cooled to again with 170-180 DEG C/h of speed, then with 220-230 DEG C/h of ramp to 700-710 DEG C, then be cooled to 220-230 DEG C with 180-190 DEG C/h of speed, insulation 3-4 hour; Again with 100-110 DEG C/h of ramp to 330-350 DEG C, insulation 40-50 minute, then with 100-110 DEG C/h of ramp to 530-550 DEG C, insulation 3-4 hour, takes out air cooling and get final product.
Described refining agent is made up of 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; Each raw material mixes by preparation method, is heated to 2600-2900 DEG C 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
The present invention by adding the multiple alloying elements such as holmium, niobium, tungsten on the basis of high carbon steel, and through secondary refining, conservative control casts postheat treatment temperature, throwing raw materials in batches, make steel alloy have the characteristic of rapid steel, high temperature resistant, red hard height, rigidity and toughness are worked good, and it is good to have surface abrasion resistance, resistance to flaking is good, cold shortness is low, cold-hot alternating corrosion, is suitable for the roll of wire rod machine, because alloying element is lower, cost is lower.The present invention uses part scrap iron as raw material, makes alloy quality more stable uniform, improves comprehensive mechanical property.Refining agent of the present invention is used for Foundry Production, significantly improves yield rate, and the degree of porosity particularly in foundry goods reduces 1-2 degree, and can not produce pore at cast(ing) surface, trapped oxide also obviously reduces, and oxide inclusion is at about 2 grades.
Embodiment
A kind of corrosion-resistant wire rod machine roll alloy steel material, the chemical element composition that it contains and mass percent thereof are: carbon 0.8-0.9, tungsten 2.5-3, molybdenum 1.0-1.3, vanadium 1.5-2.5, chromium 5.5-6.5, niobium 0.05-0.10, holmium 0.05-0.10, Sn0.04-0.08, Mn1.3-1.5, P≤0.030, S≤0.030, surplus are iron.
The production method of described corrosion-resistant wire rod machine roll alloy steel material is as follows:
(1), the preparation pig iron and scrap iron are originated as ferrous substrate in 1:1 ratio, the pig iron is added 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 adjust chemical element component content to qualified, casting, casting postheat treatment etc.;
(2) lot sequence, dropping into alloying element in alloying process in stove is: (1) vanadium, chromium; (2) tungsten, niobium, holmium; (3) other remaining components; The each batch of timed interval of dropping into element is 24 minutes, stirs after feeding intake.
Described casting postheat treatment is: elder generation with 205 DEG C/h of ramp to 705 DEG C by room temperature, is incubated 45 minutes, then with 225 DEG C/h of ramp to 955 DEG C, is incubated 4.5 hours; 585 DEG C are cooled to again with 175 DEG C/h of speed, then with 225 DEG C/h of ramp to 705 DEG C, then be cooled to 225 DEG C with 185 DEG C/h of speed, be incubated 3.5 hours; Again with 105 DEG C/h of ramp to 340 DEG C, be incubated 45 minutes, then with 105 DEG C/h of ramp to 540 DEG C, be incubated 3.5 hours, take out air cooling and get final product.
Described refining agent is made up of the raw material of following weight part (kilogram): described refining agent is made up of the raw material of following weight part (kilogram): 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; Each raw material mixes by preparation method, is heated to 2600-2900 DEG C 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.
The mechanical property of the present invention's corrosion-resistant wire rod machine roll alloy steel material is: tensile strength 1098MPa, yield strength 898MPa, unit elongation 12.5%, relative reduction in area 31%, impact absorbing energy 48J, impelling strength 59.5J/cm2, hardness 279HB.
Claims (1)
1. a corrosion-resistant wire rod machine roll alloy steel material, is characterized in that: the chemical element composition that it contains and mass percent thereof are: carbon 0.8-0.9, tungsten 2.5-3, molybdenum 1.0-1.3, vanadium 1.5-2.5, chromium 5.5-6.5, niobium 0.05-0.10, holmium 0.05-0.10, Sn0.04-0.08, Mn1.3-1.5, P≤0.030, S≤0.030, surplus are iron;
The production method of described corrosion-resistant wire rod machine roll alloy steel material:
(1), the preparation pig iron and scrap iron are originated as ferrous substrate in 1:0.5-1.5 ratio, the pig iron is added drop in stove and melt, carry out desulfurization, deoxidation, employing refining agent initial refining, add alloying constituent 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;
(2) lot sequence, dropping into alloying element in alloying process in stove is: (a) vanadium, chromium; (b) tungsten, niobium, holmium; (c) other remaining components; The each batch of timed interval of dropping into element is 22-25 minute, stirs after feeding intake;
Described casting postheat treatment is: first by room temperature with 200-210 DEG C/h of ramp to 700-710 DEG C, insulation 40-50 minute, then with 220-230 DEG C/h of ramp to 950-960 DEG C, insulation 4-5 hour; 580-590 DEG C is cooled to again with 170-180 DEG C/h of speed, then with 220-230 DEG C/h of ramp to 700-710 DEG C, then be cooled to 220-230 DEG C with 180-190 DEG C/h of speed, insulation 3-4 hour; Again with 100-110 DEG C/h of ramp to 330-350 DEG C, insulation 40-50 minute, then with 100-110 DEG C/h of ramp to 530-550 DEG C, insulation 3-4 hour, takes out air cooling and get final product;
Described refining agent is made up of 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; Each raw material mixes by the preparation method of described refining agent, is heated to 2600-2900 DEG C 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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| CN201310701690.9A CN103725968B (en) | 2013-12-19 | 2013-12-19 | A kind of corrosion-resistant wire rod machine roll alloy steel material and preparation method thereof |
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| CN201310701690.9A CN103725968B (en) | 2013-12-19 | 2013-12-19 | A kind of corrosion-resistant wire rod machine roll alloy steel material and preparation method thereof |
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| CN103725968B true CN103725968B (en) | 2016-01-27 |
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| CN104131240B (en) * | 2014-07-25 | 2016-06-01 | 合肥市东庐机械制造有限公司 | A kind of low-carbon high-niobium shock-resistance steel alloy and manufacture method thereof |
Citations (2)
| 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 |
| CN102257299A (en) * | 2009-03-26 | 2011-11-23 | 联邦摩高布尔沙伊德公司 | Nitratable steel piston rings and steel cylindrical sleeves, and casting method for the production thereof |
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| JP5181619B2 (en) * | 2007-10-26 | 2013-04-10 | 新日鐵住金株式会社 | Hardened steel with excellent machinability and hardenability |
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| 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 |
| CN102257299A (en) * | 2009-03-26 | 2011-11-23 | 联邦摩高布尔沙伊德公司 | Nitratable steel piston rings and steel cylindrical sleeves, and casting method for the production thereof |
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Address after: 243000 Dangtu Industrial Park, Ma'anshan City, Anhui Province Patentee after: MAANSHAN Fangyuan Material Engineering Co.,Ltd. Address before: 243100 north end of Gongye trunk road, development zone, Dangtu County, Ma'anshan City, Anhui Province Patentee before: MAANSHAN FANGYUAN MATERIAL ENGINEERING CO.,LTD. |
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Denomination of invention: A corrosion-resistant alloy steel material for rolling rolls of wire rod machines and its preparation method Effective date of registration: 20230413 Granted publication date: 20160127 Pledgee: Huizhou bank Limited by Share Ltd. Ma'anshan Development Zone Branch Pledgor: MAANSHAN Fangyuan Material Engineering Co.,Ltd. Registration number: Y2023980038046 |