CN105316582A - Cold roll with thick quench-hardened layer and manufacturing method thereof - Google Patents
Cold roll with thick quench-hardened layer and manufacturing method thereof Download PDFInfo
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- CN105316582A CN105316582A CN201510725364.0A CN201510725364A CN105316582A CN 105316582 A CN105316582 A CN 105316582A CN 201510725364 A CN201510725364 A CN 201510725364A CN 105316582 A CN105316582 A CN 105316582A
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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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
-
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/06—Surface hardening
- C21D1/09—Surface hardening by direct application of electrical or wave energy; by particle radiation
- C21D1/10—Surface hardening by direct application of electrical or wave energy; by particle radiation by electric induction
-
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
- C21D1/25—Hardening, combined with annealing between 300 degrees Celsius and 600 degrees Celsius, i.e. heat refining ("Vergüten")
-
- 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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/38—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for roll bodies
-
- 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
-
- 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
- C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
-
- 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
- Y02P10/25—Process efficiency
Abstract
The invention relates to a cold roll with a thick quench-hardened layer. Chemical constituents in materials of the cold roll include, by weight, 0.70-1.20% of C, 0.5-1.20% of Si, 0.60-1.00% of Mn, 2.50-4.00% of Cr, 0.20-1.00% of Mo, at most 0.30% of Ni, at most 0.015% of S, at most 0.015% of P and the balance Fe and unavoidable impurities. The thickness of the quench-hardened layer of the cold roll is increased, and secondary quenching for the cold roll during usage is avoided.
Description
Technical field
The present invention relates to roll manufacturing technology field, especially a kind of cold roll and manufacture method thereof with thick quench-hardened case.
Background technology
Along with modernization cold-rolling mill production technique improves day by day, breaker roll requires day by day harsh, roll can use working lining thickness to strengthen gradually, for adapting to the development of cold-rolling mill, Cold Work Roll Material rises to development trend with Cr content, develops into Cr5 material from initial Cr2, Cr3, to improve the quench-hardened case thickness of roll, to meet the hardness of roll body requirement in roll whole military service cycle, avoid heavily quenching in use procedure.Cr5 material is compared with Cr3 material, and because Cr alloy content is higher, component segregation is serious, and manufacture difficulty is large, and cost of manufacture is high, applies and is restricted.And common Cr3 material quench-hardened case thickness is more shallow, general at below 30mm, working lining is required to the cold roll of more than 30mm, need to return roll manufacturing firm again after adopting common Cr3 material roll to use certain diameter and carry out one-time surface quench treatment again, to ensure hardness of roll body requirement, such roll that need increase has enough to meet the need quantity, and additional transport and expense of heavily quenching back and forth, improve roll cost.
Summary of the invention
The technical issues that need to address of the present invention are to provide a kind of cold roll and the manufacture method thereof with thick quench-hardened case, improve the thickness of cold roll brinelling layer, avoid cold roll in use to carry out secondary quenching.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is:
Have the cold roll of thick quench-hardened case, the chemical composition in described cold roll material and weight percentage be,
C0.70 ~ 1.20%; Si0.50 ~ 1.20%; Mn0.60 ~ 1.00%; Cr2.50 ~ 4.00%; Mo0.20 ~ 1.00%; Ni≤0.30%; S≤0.015%; P≤0.015%; All the other are Fe and inevitable impurity.
The further improvement of technical scheme of the present invention is: the chemical composition in described cold roll material and weight percentage be,
C0.77 ~ 0.85%; Si0.50 ~ 0.90%; Mn0.65 ~ 0.90%; Cr3.00 ~ 3.40%; Mo0.40 ~ 0.80%; Ni≤0.15%; S≤0.013%; P≤0.008%; All the other are Fe and inevitable impurity.
The further improvement of technical scheme of the present invention is: the manufacture method of described cold roll comprises following process steps,
1) according to the chemical composition in cold roll material and weight percentage preparation steel raw material, roller stock is obtained according to roller stock production technique;
2) rough turn and Tempering and Quenching is carried out to roller stock;
3) induction quenching thermal treatment is carried out to roller stock.
The further improvement of technical scheme of the present invention is: described step 1) in the detailed process of roller stock production technique be, steel raw material electric arc furnace and LF/VD refining furnace are smelted, be molded into electrode bar, after the demoulding, anneal is carried out to electrode bar, again electrode bar esr is become ESR ingot, the chemical composition of ESR ingot and weight percentage are chemically examined, after composition is qualified, ESR ingot is heated, be forged into forging stock, heat treatment after forging is carried out to forging stock, finally carries out turnery processing and obtain roller stock.
The further improvement of technical scheme of the present invention is: the annealing temperature of described electrode bar anneal is 620 ~ 680 DEG C, and annealing time is 12 ~ 24h, and described heat treatment after forging temperature is 650 ~ 700 DEG C, and the treatment time is 24 ~ 36h.
The further improvement of technical scheme of the present invention is: described step 2) in the detailed process of Tempering and Quenching be, roller stock after rough turn is heated to 850 ~ 900 DEG C, soaking time 6 ~ 10h, roller stock after insulation is carried out shrend, the shrend time is 20 ~ 30min, again the roller stock after shrend is heated to 600 ~ 650 DEG C and carries out high tempering, tempering time is 20 ~ 30h.
The further improvement of technical scheme of the present invention is: described step 3) in the heat treated detailed process of induction quenching be, roller stock after conditioning heat treatment is transferred in double frequency induction device, be heated to 880 DEG C ~ 940 DEG C, roller stock water-spraying control after heating, cooled roller stock is heated to 100 ~ 350 DEG C and carries out low-temperaturetempering, and the low-temperaturetempering time is 60 ~ 120h.
The further improvement of technical scheme of the present invention is: the quench-hardened case thickness of described cold roll is greater than 40mm.
The further improvement of technical scheme of the present invention is: the surface hardness of described cold roll is 80 ~ 100HSD.
Owing to have employed technique scheme, the technical progress that the present invention obtains is:
The present invention is by the improvement to cold roll material and manufacture method, obtain a kind of cold roll with thicker quench-hardened case thickness, prove through production test, under same processing condition, the original common Cr3 roll of quench-hardened case Thickness Ratio of roll of the present invention improves more than 10mm.
The chemical composition of the present invention in cold roll material and weight percentage have done larger improvement, Cr content 3% basis improves the content of Mn, make the quench-hardened case thickness of cold roll of the present invention can reach more than radius 40mm, substantially meet working roll used for cold rolling mill and the service requirements of intermediate roll working lining.The present invention has broken traditional way improving hardening capacity by increasing the expensive alloying elements such as Cr, Ni, by adjustment Mn, Si, Mo equal size, super thick quench-hardened case can be obtained after suitable thermal treatment, thus substitute Cr5 material, improve processing performance, reduce costs, and the use propertieies such as the wear resistance of cold roll can be ensured.
The present invention carries out larger improvement to the manufacturing technology steps of cold roll,
Roller stock production technique can ensure the purity that roller stock is high, good metallurgical quality, obtain evenly fine and closely woven forging tissue, by carrying out Tempering and Quenching to roller stock, making roller stock obtain higher comprehensive mechanical performance, fierce quench cooled can be born, after Tempering and Quenching, body of roll grain fineness number is moderate, homogeneous microstructure, and carbide is that particulate state is separated out.By carrying out induction quenching process to roller stock, make roller stock obtain suitable hardness of roll body and good structural state, detect metallographic structure after induction quenching+tempering, the kind of carbide particle, size, quantity are obviously improved.
Embodiment
In the present invention, the testing method of cold roll brinelling layer thickness is: adopt the body of roll successively car grinding method, successively carry out hardness determination.The testing method of cold roll roll surface hardness is: adopt the Shore scleroscope that roll is special, detect HSD numerical value by GB/T13313-2008 method.
Below in conjunction with embodiment, the present invention is described in further details:
Embodiment 1
The manufacture method with the cold roll of thick quench-hardened case of the present embodiment comprises the following steps,
1) according to the chemical composition in cold roll material and weight percentage preparation steel raw material, roller stock is obtained according to roller stock production technique.
Be specially, steel raw material electric arc furnace and LF/VD refining furnace are smelted, be molded into electrode bar, after the demoulding, anneal is carried out to electrode bar, then electrode bar esr is become ESR ingot, the chemical composition of ESR ingot and weight percentage are chemically examined, after composition is qualified, ESR ingot is heated, be forged into forging stock, heat treatment after forging is carried out to forging stock, finally carry out turnery processing and obtain roller stock.
The annealing temperature of electrode bar anneal is 650 DEG C, and annealing time is 15h, and heat treatment after forging temperature is 680 DEG C, and the treatment time is 30h.
Shown in the weight percentage test result of the Main chemical component in the cold roll material of the present embodiment arranges see embodiment in table 11, all the other are Fe and inevitable impurity.
2) rough turn and Tempering and Quenching is carried out to roller stock.
Be specially, the roller stock after rough turn is heated to 860 DEG C, soaking time 8h, the roller stock after insulation is carried out shrend, and the shrend time is 20 minutes, then the roller stock after shrend is heated to 625 DEG C carries out high tempering, and tempering time is 20h.
3) induction quenching thermal treatment is carried out to roller stock.
Be specially, be transferred in double frequency induction device by the roller stock after conditioning heat treatment, be heated to 900 DEG C, the roller stock water-spraying control after heating, cooled roller stock is heated to 130 DEG C and carries out low-temperaturetempering, and the low-temperaturetempering time is 80h.
After above-mentioned process, the cold roll of the present embodiment, surface hardness is 93 ~ 95HSD, and quench-hardened case thickness is 42.5mm.
Embodiment 2
The cold roll with thick quench-hardened case of the present embodiment, after tested, shown in the content of Main chemical component arranges see embodiment in table 12, all the other are Fe and inevitable impurity to the weight percentage of the Main chemical component in its material.
The manufacture method with the cold roll of thick quench-hardened case of the present embodiment, its processing step is close with embodiment 1, differs shown in other concrete heat treatment parameter arranges see embodiment in table 22 with embodiment 1.
After above-mentioned process, the cold roll of the present embodiment, surface hardness is 95 ~ 96HSD, and quench-hardened case thickness is 41mm.
Embodiment 3
The cold roll with thick quench-hardened case of the present embodiment, after tested, shown in the content of Main chemical component arranges see embodiment in table 13, all the other are Fe and inevitable impurity to the weight percentage of the Main chemical component in its material.
The manufacture method with the cold roll of thick quench-hardened case of the present embodiment, its processing step is close with embodiment 1, differs shown in other concrete heat treatment parameter arranges see embodiment in table 23 with embodiment 1.
After above-mentioned process, the cold roll of the present embodiment, surface hardness is 94 ~ 95HSD, and quench-hardened case thickness is 43mm.
Embodiment 4
The cold roll with thick quench-hardened case of the present embodiment, after tested, shown in the content of Main chemical component arranges see embodiment in table 14, all the other are Fe and inevitable impurity to the weight percentage of the Main chemical component in its material.
The manufacture method with the cold roll of thick quench-hardened case of the present embodiment, its processing step is close with embodiment 1, differs shown in other concrete heat treatment parameter arranges see embodiment in table 24 with embodiment 1.
After above-mentioned process, the cold roll of the present embodiment, surface hardness is 95 ~ 96HSD, and quench-hardened case thickness is 42mm.
Embodiment 5
The cold roll with thick quench-hardened case of the present embodiment, after tested, shown in the content of Main chemical component arranges see embodiment in table 15, all the other are Fe and inevitable impurity to the weight percentage of the Main chemical component in its material.
The manufacture method with the cold roll of thick quench-hardened case of the present embodiment, its processing step is close with embodiment 1, differs shown in other concrete heat treatment parameter arranges see embodiment in table 25 with embodiment 1.
After above-mentioned process, the cold roll of the present embodiment, surface hardness is 93 ~ 95HSD, and quench-hardened case thickness is 41mm.
Embodiment 6
The cold roll with thick quench-hardened case of the present embodiment, after tested, shown in the content of Main chemical component arranges see embodiment in table 16, all the other are Fe and inevitable impurity to the weight percentage of the Main chemical component in its material.
The manufacture method with the cold roll of thick quench-hardened case of the present embodiment, its processing step is close with embodiment 1, differs shown in other concrete heat treatment parameter arranges see embodiment in table 26 with embodiment 1.
After above-mentioned process, the cold roll of the present embodiment, surface hardness is 80 ~ 81HSD, and quench-hardened case thickness is 45mm.
Embodiment 7
The cold roll with thick quench-hardened case of the present embodiment, after tested, shown in the content of Main chemical component arranges see embodiment in table 17, all the other are Fe and inevitable impurity to the weight percentage of the Main chemical component in its material.
The manufacture method with the cold roll of thick quench-hardened case of the present embodiment, its processing step is close with embodiment 1, differs shown in other concrete heat treatment parameter arranges see embodiment in table 27 with embodiment 1.
After above-mentioned process, the cold roll of the present embodiment, surface hardness is 81 ~ 82HSD, and quench-hardened case thickness is 43mm.
Embodiment 8
The cold roll with thick quench-hardened case of the present embodiment, after tested, shown in the content of Main chemical component arranges see embodiment in table 18, all the other are Fe and inevitable impurity to the weight percentage of the Main chemical component in its material.
The manufacture method with the cold roll of thick quench-hardened case of the present embodiment, its processing step is close with embodiment 1, differs shown in other concrete heat treatment parameter arranges see embodiment in table 28 with embodiment 1.
After above-mentioned process, the cold roll of the present embodiment, surface hardness is 82 ~ 84HSD, and quench-hardened case thickness is 42mm.
The cold roll Main chemical component of table 1 embodiment 1 ~ 8 and weight percentage synopsis
The heat treatment process parameter synopsis of the cold roll of table 2 embodiment 1 ~ 8
The performance perameter synopsis of the cold roll of table 3 embodiment 1 ~ 8
Claims (9)
1. there is the cold roll of thick quench-hardened case, it is characterized in that: the chemical composition in described cold roll material and weight percentage be,
C0.70 ~ 1.20%; Si0.50 ~ 1.20%; Mn0.60 ~ 1.00%; Cr2.50 ~ 4.00%; Mo0.20 ~ 1.00%; Ni≤0.30%; S≤0.015%; P≤0.015%; All the other are Fe and inevitable impurity.
2. the cold roll with thick quench-hardened case according to claim 1, is characterized in that: the chemical composition in described cold roll material and weight percentage be,
C0.77 ~ 0.85%; Si0.50 ~ 0.90%; Mn0.65 ~ 0.90%; Cr3.00 ~ 3.40%; Mo0.40 ~ 0.80%; Ni≤0.15%; S≤0.013%; P≤0.008%; All the other are Fe and inevitable impurity.
3. there is the manufacture method of the cold roll of thick quench-hardened case, it is characterized in that: the manufacture method of described cold roll comprises following process steps,
1) according to the chemical composition in cold roll material and weight percentage preparation steel raw material, roller stock is obtained according to roller stock production technique;
2) rough turn and Tempering and Quenching is carried out to roller stock;
3) induction quenching thermal treatment is carried out to roller stock.
4. the manufacture method with the cold roll of thick quench-hardened case according to claim 3, it is characterized in that: described step 1) in the detailed process of roller stock production technique be, steel raw material electric arc furnace and LF/VD refining furnace are smelted, be molded into electrode bar, after the demoulding, anneal is carried out to electrode bar, again electrode bar esr is become ESR ingot, the chemical composition of ESR ingot and weight percentage are chemically examined, after composition is qualified, ESR ingot is heated, be forged into forging stock, heat treatment after forging is carried out to forging stock, finally carries out turnery processing and obtain roller stock.
5. the manufacture method with the cold roll of thick quench-hardened case according to claim 4, it is characterized in that: the annealing temperature of described electrode bar anneal is 620 ~ 680 DEG C, annealing time is 12 ~ 24h, and described heat treatment after forging temperature is 650 ~ 700 DEG C, and the treatment time is 24 ~ 36h.
6. the manufacture method with the cold roll of thick quench-hardened case according to claim 3, it is characterized in that: described step 2) in the detailed process of Tempering and Quenching be, roller stock after rough turn is heated to 850 ~ 900 DEG C, soaking time 6 ~ 10h, roller stock after insulation is carried out shrend, the shrend time is 20 ~ 30min, then the roller stock after shrend is heated to 600 ~ 650 DEG C carries out high tempering, and the high tempering time is 20 ~ 30h.
7. the manufacture method with the cold roll of thick quench-hardened case according to claim 3, it is characterized in that: described step 3) in the heat treated detailed process of induction quenching be, roller stock after conditioning heat treatment is transferred in double frequency induction device, be heated to 880 DEG C ~ 940 DEG C, roller stock water-spraying control after heating, cooled roller stock is heated to 100 ~ 350 DEG C and carries out low-temperaturetempering, and the low-temperaturetempering time is 60 ~ 120h.
8. the manufacture method with the cold roll of thick quench-hardened case according to claim 7, is characterized in that: the quench-hardened case thickness of described cold roll is greater than 40mm.
9. the manufacture method with the cold roll of thick quench-hardened case according to claim 7, is characterized in that: the surface hardness of described cold roll is 80 ~ 100HSD.
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| CN105969180A (en) * | 2016-05-18 | 2016-09-28 | 安徽合矿机械股份有限公司 | Preparation method of compression roller for rolling machine |
| CN108034899A (en) * | 2017-12-12 | 2018-05-15 | 中钢集团邢台机械轧辊有限公司 | A kind of high-speed broad-width aluminium foil working roll |
| CN110777294A (en) * | 2019-09-25 | 2020-02-11 | 中钢集团邢台机械轧辊有限公司 | Large-scale battery pole piece rolling mill working roll and preparation method thereof |
| CN111139401A (en) * | 2019-12-26 | 2020-05-12 | 中钢集团邢台机械轧辊有限公司 | High-alloy forged steel BD roll and manufacturing method thereof |
| CN112853203A (en) * | 2020-12-30 | 2021-05-28 | 中钢集团邢台机械轧辊有限公司 | Cr2 forged steel supporting roll and preparation method thereof |
| CN114318138A (en) * | 2021-11-26 | 2022-04-12 | 中钢集团邢台机械轧辊有限公司 | High-hardness large-scale pole piece roller material and pole piece roller preparation method |
| CN114350927A (en) * | 2021-12-09 | 2022-04-15 | 中钢集团邢台机械轧辊有限公司 | Heat treatment method for improving performance of supporting roller |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105969180A (en) * | 2016-05-18 | 2016-09-28 | 安徽合矿机械股份有限公司 | Preparation method of compression roller for rolling machine |
| CN108034899A (en) * | 2017-12-12 | 2018-05-15 | 中钢集团邢台机械轧辊有限公司 | A kind of high-speed broad-width aluminium foil working roll |
| CN108034899B (en) * | 2017-12-12 | 2021-05-14 | 中钢集团邢台机械轧辊有限公司 | High-speed broad width aluminium foil working roll |
| CN110777294A (en) * | 2019-09-25 | 2020-02-11 | 中钢集团邢台机械轧辊有限公司 | Large-scale battery pole piece rolling mill working roll and preparation method thereof |
| CN111139401A (en) * | 2019-12-26 | 2020-05-12 | 中钢集团邢台机械轧辊有限公司 | High-alloy forged steel BD roll and manufacturing method thereof |
| CN112853203A (en) * | 2020-12-30 | 2021-05-28 | 中钢集团邢台机械轧辊有限公司 | Cr2 forged steel supporting roll and preparation method thereof |
| CN114318138A (en) * | 2021-11-26 | 2022-04-12 | 中钢集团邢台机械轧辊有限公司 | High-hardness large-scale pole piece roller material and pole piece roller preparation method |
| CN114318138B (en) * | 2021-11-26 | 2023-12-12 | 中钢集团邢台机械轧辊有限公司 | High-hardness large-scale pole piece roller material and pole piece roller preparation method |
| CN114350927A (en) * | 2021-12-09 | 2022-04-15 | 中钢集团邢台机械轧辊有限公司 | Heat treatment method for improving performance of supporting roller |
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| CN105316582B (en) | 2018-01-05 |
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