CN105331885A - Production method of 37 Mn round billets for air cylinders - Google Patents

Production method of 37 Mn round billets for air cylinders Download PDF

Info

Publication number
CN105331885A
CN105331885A CN201510647938.7A CN201510647938A CN105331885A CN 105331885 A CN105331885 A CN 105331885A CN 201510647938 A CN201510647938 A CN 201510647938A CN 105331885 A CN105331885 A CN 105331885A
Authority
CN
China
Prior art keywords
steel
production
refining
molten steel
treatment
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201510647938.7A
Other languages
Chinese (zh)
Inventor
任茂勇
王智轶
马立军
贺建哲
刘晓明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tianjin Iron and Steel Group Co Ltd
Original Assignee
Tianjin Iron and Steel Group Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tianjin Iron and Steel Group Co Ltd filed Critical Tianjin Iron and Steel Group Co Ltd
Priority to CN201510647938.7A priority Critical patent/CN105331885A/en
Publication of CN105331885A publication Critical patent/CN105331885A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00Continuous casting of metals, i.e. casting in indefinite lengths
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21CPROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28Manufacture of steel in the converter
    • C21C5/30Regulating or controlling the blowing
    • C21C5/35Blowing from above and through the bath
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21CPROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/0006Adding metallic additives
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21CPROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/04Removing impurities by adding a treating agent
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21CPROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/04Removing impurities by adding a treating agent
    • C21C7/072Treatment with gases
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21CPROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/10Handling in a vacuum
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/04Ferrous alloys, e.g. steel alloys containing manganese

Abstract

The invention discloses a production method of 37 Mn round billets for air cylinders. The method includes the steps of treatment in a blast furnace, treatment in a top-bottom combined blowing converter, treatment in an LF refining furnace, treatment in a VD vacuum furnace, treatment in a round billet continuous casting machine, round billet check and storage. The chemical components of the 37 Mn round billets for producing the air cylinders are strictly controlled, goods are supplied evenly in the entire batch, and fluctuation is small. The top-bottom combined blowing technology is adopted, blowing is balanced, and the hit rates of the components and the temperature are high. In the LF and VD refining processes, argon bottom blowing and steel ladle wire feeding equipment is arranged in the whole process of a steel ladle, gas in steel can be effectively removed, the content of impurities in the steel is reduced, and the purity of molten steel is improved. In the continuous casting process, crystallizer electromagnetic stirring and low superheat-degree casting are adopted for guaranteeing the quality of the round billets.

Description

The production method of gas vessel 37Mn circle base
Technical field
The invention belongs to converter field of metallurgy, especially a kind of production method of gas vessel 37Mn circle base.
Background technology
Gas cylinder is mainly used in splendid attire O 2, H 2, CO 2etc. permanent gases, use pressure generally at 15 ~ 30MPa.Gas cylinder in the past main base bottle is main, and along with the breakthrough of the end and closing in technology received by weldless steel tube, gas cylinder weldless steel tube demand is increasing, and the individual demand of client is also more and more higher.Require that steel pipe has good obdurability and low-temperature impact-resistant, require that pipe steel is pure, the gas content in steel and inclusion low, and strictly to detect a flaw to steel pipe.Gas cylinder is the special equipment that China's quantity is maximum.Along with the development of gas industry and electronic industry, gas cylinder industry also develops rapidly thereupon, and the demand of gas cylinder is also increasing.According to statistics, gross national product often increases by 1%, and the demand of gas cylinder just increases by 1.5%.Can say, developing rapidly of the quick growth Direct driver gas cylinder industry of demand.
At present, China's air bottle steel raw material mainly uses hot rolling base, seldom uses continuous cast round billets.Compared with hot rolling circle base, continuous cast round billets has the obvious advantages such as technique is simple, lumber recovery is high, energy consumption is low, is the developing direction of air bottle steel raw material.What present domestic production continuous cast round billets adopted substantially is Electric furnace steel making, and its technical process is: electric arc furnace → refining → continuous casting steel machine.
Summary of the invention
A kind of converter process is the object of the present invention is to provide to produce the method for air bottle steel 37Mn circle base.Improve Molten Steel Cleanliness, alleviate the harm that micro residue element brings, improve the comprehensive mechanical property of air bottle steel.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is: a kind of production method of gas vessel 37Mn circle base, processing step is: the blast-melted top and bottom combined blown converter that enters is smelted, and adopts LF refining furnace, the refining of VD vacuum oven, continuous casting to make round base after converter tapping; According to mass percent, described 37Mn composition: C:0.35 ~ 0.38%, Si:0.16 ~ 0.26%, Mn:1.56 ~ 1.66%, P :≤0.020%, S :≤0.010%, P+S≤0.025%, Al:0.020 ~ 0.040, Cr :≤0.025%, Ni :≤0.025%, Cu :≤0.20%, 37Mn is to residual element Pb+Sn+As+Sb+Bi≤300ppm in steel in addition, wherein gas content: H≤2ppm, O≤30ppm, N≤60ppm in Sn≤150ppm, As≤150ppm, V+Nb+Ti+B+Zr≤0.15%, steel.
The technique of described top and bottom combined blown converter is: adopt top and bottom combined blown converter to realize the first refining of molten steel, and tapping process controls the lower quantity of slag 30 ~ 60mm, prevents rephosphorization, according to mass percent, and tapping [C]: 0.7-0.12%, [P]: 0-0.009%.
The technique of described LF refining furnace is: feed Al line by 1.8 ~ 2.2m/t after the adjustment of composition, temperature, and in control steel, dissolved aluminum mass content is at 0.030-0.050%; Described VD vacuum oven refining procedure: molten steel vacuum-treat requires to keep 15 ~ 20 minutes under vacuum tightness≤67Pa, feeds CaSi silk 0.8 ~ 1.2m/t after broken empty, feed after silk terminates, soft argon blowing time 9 ~ 15 minutes, molten steel departures hydrogen richness is 0 ~ 2ppm; Nitrogen content is 50 ~ 60ppm, and oxygen level is 20 ~ 30ppm.
The diameter of described Al line is Φ 12mm; The diameter of described CaSi silk is Φ 13mm.
Whole process protection cast in described casting process; prevent secondary oxidation of steel; ensure the purity of molten steel; middle bag storing temperature 1150-1200 DEG C; the superheating temperature of tundish liquid level 900mm ± 20mm, mould liquid level fluctuation ± 3mm, molten steel controls within the scope of 20-30 DEG C; stable pulling rate is 1.6 ~ 3.2m/min, uses M-EMS, and the strand cooling in heap that rolls off the production line is not less than 24 hours.
Described stable pulling rate according to the scope of different size pulling rate is: Φ 150mm:2.8 ~ 3.0m/min; Φ 160mm:2.5 ~ 2.8m/min; Φ 180mm:2.2 ~ 2.4m/min; Φ 200mm:1.8 ~ 2.1m/min; Φ 210mm:1.6 ~ 1.8m/min.
The invention has the beneficial effects as follows:
1, compared with electric furnace production technique, in steel, residual element (as Pb+Sn+As+Sb+Bi etc.) content is low, gas and to be mingled with content few, and Molten Steel Cleanliness is high, and thus the quality of steel grade is higher;
2, LF, VD refining procedure is furnished with ladle whole process BOTTOM ARGON BLOWING and ladle wire feeding equipment, can gas in effective elimination steel, ensures the denaturing treatment of all even inclusion of composition adjustment, reduces inclusion content of steel, improve Molten Steel Cleanliness;
3, casting process whole process protection cast, prevent secondary oxidation of steel, Prepared by Low Superheat Pouring, in conjunction with M-EMS technique, adds strand equiax crystal and alleviates center porosity and segregation.
Embodiment
The chemical component weight per-cent of 37Mn gas vessel of the present invention is: C:0.35 ~ 0.38%, Si:0.16 ~ 0.26%, Mn:1.56 ~ 1.66%, P :≤0.020%, S :≤0.010%, P+S≤0.025%, Al:0.020 ~ 0.040, Cr :≤0.025%, Ni :≤0.025%, Cu :≤0.20%.37Mn is to residual element Pb+Sn+As+Sb+Bi≤300ppm in steel in addition, wherein gas content: H≤2ppm, O≤30ppm, N≤60ppm in Sn≤150ppm, As≤150ppm, V+Nb+Ti+B+Zr≤0.15%, steel.
Technique of the present invention: blast furnace → 120t top and bottom combined blown converter → 120tLF refining furnace → VD vacuum oven → Φ 150mm-Φ 210mm round billet continuous casting machine → turn over cooling bed → inspection → warehouse-in.Concrete technology step:
1 raw material: take fine fodder principle, enters the requirement of stove molten iron: [Si]: 0.40-0.95%, [P]: 0-0.090%, [S]: 0-0.025%.
2 converter smeltings: converter tapping takes slag-stopping tapping, control lower quantity of slag 30-60mm, prevent rephosphorization; Converter tapping target call [C]: 0.07 ~ 0.12%, [P]: 0 ~ 0.009%.
3LF refining: because this steel grade requires that uniform composition is stablized, between each heat, fluctuation range is little, inclusion content of steel is required strict, therefore LF refining procedure controls, in LF refining process in molten steel around adjustment and evening chemical composition, steel inclusion sex change and removal, adjustment temperature etc.: C=0.35 ~ 0.37%, Si=0.17 ~ 0.21%, Mn=1.57 ~ 1.63%, Alt=0.025 ~ 0.035%, P≤0.020%, S≤0.010%, P+S≤0.025%.Feed Al line (Φ 12mm) by 1.8 ~ 2.2m/t after the adjustment of composition, temperature, in control steel, acid-soluble aluminum content is 0.030 ~ 0.050%.
4VD refining procedure: molten steel vacuum-treat requires to keep 15-20 minute under vacuum tightness≤67Pa, after vacuum-treat terminates, feed CaSi silk (Φ 13mm) 0.8 ~ 1.2m/t, improve fluidity molten steel and denaturing treatment is carried out to inclusion, ensure carrying out smoothly of cast; After hello silk terminates, ensure enough soft argon blowing time 9-15 minute, make chemical composition and homogeneous temperature in steel, inclusion is removed further, ensures that molten steel departures hydrogen richness is 0 ~ 2ppm; Nitrogen content is 50 ~ 60ppm oxygen level is 20 ~ 30ppm, requires that continuous casting temperature of arriving at a station is 1563 ± 5 DEG C.
5 continuous castings: Φ 150mm ~ Φ 210mm round billet continuous casting machine, for ensureing carrying out smoothly of slab quality and continuous casting, priority control the following aspects:
A. in casting process, ladle takes whole process to add protective casing molding casting to tundish, tundish to crystallizer, prevents secondary oxidation of steel, ensures the purity of molten steel, middle bag storing temperature 1150-1200 DEG C, tundish liquid level 900mm ± 20mm; Mould liquid level fluctuation ± 3mm.
B. conservative control casting machine secondary cooling water specific water, ensures the even of cooling twice.Specific water 0.70 ~ 0.90L/Kg, to reach the generation that slab surface crack is even stopped in minimizing;
C. the superheating temperature of molten steel controls within the scope of 20-30 DEG C, and stable pulling rate is 1.6 ~ 3.0m/min, is: Φ 150mm:2.8 ~ 3.0m/min according to the preferable range of different size pulling rate; Φ 160mm:2.5 ~ 2.8m/min; Φ 180mm:2.2 ~ 2.4m/min; Φ 200mm:1.8 ~ 2.1m/min; Φ 210mm:1.6 ~ 1.8m/min;
D. use M-EMS, ensure that strand crystal structure is fine and close, evenly, reduce strand column crystal rate, avoid the defects such as strand crackle, shrinkage cavity, improve the surface quality of continuously cast bloom;
E. strand requires to roll off the production line cooling in heap, and the time is not less than 24 hours;
Embodiment 1
The technological process of production: blast furnace → 120t top and bottom combined blown converter → 120tLF refining furnace → VD vacuum oven → round billet continuous casting machine → turn over cooling bed → inspection → warehouse-in.
(1) stove molten iron is entered: [Si]: 0.41%, [P]: 0.065%, [S]: 0.020%.
(2) converter smelting.Adopt slag-stopping tapping, the lower quantity of slag: 44mm, during tapping [C]: 0.11%, [P]: 0.007%;
(3) LF refining.Composition Control: [C]: 0.36%, [Si]: 0.20%, [Mn]: 1.61%, [P]: 0.14%, [S]: 0.005%; Press 2.0m/t after the adjustment of composition, temperature and feed Al line (Φ 12mm), in control steel, acid-soluble aluminum content is 0.046%.
(4) VD refining procedure.Molten steel vacuum-treat vacuum tightness 60Pa, 16 minutes hold-times, feeds CaSi silk 0.1m/t, improves fluidity molten steel and inclusions class; After hello silk terminates, soft blow argon operates 10 minutes; Departures hydrogen richness is 1.8ppm, oxygen level is 26ppm, nitrogen content is 50ppm.Adjustment continuous casting arrives at a station temperature 1565 DEG C.
(5) continuous casting working procedure: casting blank section Φ 160mm.
A. the large bag of continuous casting takes whole process to add protective casing molding casting to tundish, tundish to crystallizer; Middle bag storing temperature 1170 DEG C, tundish liquid level 900mm, mould liquid level fluctuation is within ± 3mm.
B. casting machine secondary cooling water specific water 0.85L/Kg;
C. the superheating temperature 25 DEG C of molten steel, pulling rate 2.6m/min;
D. M-EMS is used;
E. strand rolls off the production line cooling in heap 26 hours.
Embodiment 2
The technological process of production: blast furnace → 120t top and bottom combined blown converter → 120tLF refining furnace → VD vacuum oven → round billet continuous casting machine → turn over cooling bed → inspection → warehouse-in.
(1) stove molten iron is entered: [Si]: 0.43%, [P]: 0.067%, [S]: 0.021%.
(2) converter smelting.Adopt slag-stopping tapping, the lower quantity of slag: 43mm, during tapping [C]: 0.10%, [P]: 0.006%;
(3) LF refining.Composition Control: [C]: 0.35%, [Si]: 0.19%, [Mn]: 1.59%, [P]: 0.12%, [S]: 0.006%; .Press 1.9m/t after the adjustment of composition, temperature and feed Al line (Φ 12mm), in control steel, acid-soluble aluminum content is 0.040%.
(4) VD refining procedure.Molten steel vacuum-treat vacuum tightness 63Pa, 17 minutes hold-times, feeds CaSi silk (Φ 13mm) 0.09m/t, improves fluidity molten steel and inclusions class; After hello silk terminates, soft blow operates 9 minutes; Departures hydrogen richness is 1.7ppm, and oxygen level is 25ppm, nitrogen content is 53ppm.Adjustment continuous casting arrives at a station temperature 1567 DEG C.
(5) continuous casting working procedure: casting blank section Φ 180mm.
A. the large bag of continuous casting takes whole process to add protective casing molding casting to tundish, tundish to crystallizer; Middle bag storing temperature 1180 DEG C, tundish liquid level 910mm, mould liquid level fluctuation is within ± 3mm.
B. casting machine secondary cooling water specific water 0.80L/Kg;
C. the superheating temperature 27 DEG C of molten steel, pulling rate 2.3m/min;
D. M-EMS is used;
E. strand rolls off the production line cooling in heap 25 hours.
Embodiment 3
The technological process of production: blast furnace → 120t top and bottom combined blown converter → 120tLF refining furnace → VD vacuum oven → round billet continuous casting machine → turn over cooling bed → inspection → warehouse-in.
(1) stove molten iron is entered: [Si]: 0.46%, [P]: 0.062%, [S]: 0.022%.
(2) converter smelting.Adopt slag-stopping tapping, the lower quantity of slag: 40mm, during tapping [C]: 0.10%, [P]: 0.008%;
(3) LF refining.Composition Control: [C]: 0.36%, [Si]: 0.18%, [Mn]: 1.58%, [P]: 0.13%, [S]: 0.006%; Press 2.1m/t after the adjustment of composition, temperature and feed Al line (Φ 12mm), in control steel, acid-soluble aluminum content is 0.042%.
(4) VD refining procedure.Molten steel vacuum-treat vacuum tightness 65Pa, 19 minutes hold-times, feeds CaSi silk (Φ 13mm) 1.1m/t, improves fluidity molten steel and inclusions class; After hello silk terminates, soft blow operates 11 minutes; Departures hydrogen richness is 1.5ppm, oxygen level is 28ppm, nitrogen content is 55ppm.Adjustment continuous casting arrives at a station temperature 1563 DEG C.
(5) continuous casting working procedure: casting blank section Φ 200mm.
A. the large bag of continuous casting takes whole process to add protective casing molding casting to tundish, tundish to crystallizer; Middle bag storing temperature 1190 DEG C, tundish liquid level 900mm, mould liquid level fluctuation is within ± 3mm.
B. casting machine secondary cooling water specific water 0.75L/Kg;
C. the superheating temperature 28 DEG C of molten steel, pulling rate 1.9m/min;
D. M-EMS is used;
E. strand rolls off the production line cooling in heap 28 hours.
Embodiment 4
The technological process of production: blast furnace → 120t top and bottom combined blown converter → 120tLF refining furnace → VD vacuum oven → round billet continuous casting machine → turn over cooling bed → inspection → warehouse-in.
(1) stove molten iron is entered: [Si]: 0.44%, [P]: 0.060%, [S]: 0.021%.
(2) converter smelting.Adopt slag-stopping tapping, the lower quantity of slag: 40mm, during tapping [C]: 0.10%, [P]: 0.007%;
(3) LF refining.Composition Control: [C]: 0.35%, [Si]: 0.18%, [Mn]: 1.61%, [P]: 0.14%, [S]: 0.005%; Press 2.1m/t after the adjustment of composition, temperature and feed Al line (Φ 12mm), in control steel, acid-soluble aluminum content is 0.041%.
(4) VD refining procedure.Molten steel vacuum-treat vacuum tightness 63Pa, 18 minutes hold-times, feeds CaSi silk (Φ 13mm) 1.1m/t, improves fluidity molten steel and inclusions class; After hello silk terminates, soft blow operates 11 minutes; Departures hydrogen richness is 1.5ppm, oxygen level is 28ppm, nitrogen content is 55ppm.Adjustment continuous casting arrives at a station temperature 1563 DEG C.
(5) continuous casting working procedure: casting blank section Φ 210mm.
A. the large bag of continuous casting takes whole process to add protective casing molding casting to tundish, tundish to crystallizer; Middle bag storing temperature 1190 DEG C, tundish liquid level 900mm, mould liquid level fluctuation is within ± 3mm.
B. casting machine secondary cooling water specific water 0.70L/Kg;
C. the superheating temperature 28 DEG C of molten steel, pulling rate 1.7m/min;
D. M-EMS is used;
E. strand rolls off the production line cooling in heap 29 hours.
Above-described embodiment is only for illustration of technological thought of the present invention and feature, its object is to enable those skilled in the art understand content of the present invention and implement according to this, only can not limit the scope of the claims of the present invention with the present embodiment, namely the equal change done of all disclosed spirit or modification, still drop in the scope of the claims of the present invention.

Claims (5)

1. a production method for gas vessel 37Mn circle base, it is characterized in that, processing step is: the blast-melted top and bottom combined blown converter that enters is smelted, and adopts LF refining furnace, the refining of VD vacuum oven, continuous casting to make round base after converter tapping; According to mass percent, described 37Mn composition: C:0.35 ~ 0.38%, Si:0.16 ~ 0.26%, Mn:1.56 ~ 1.66%, P :≤0.020%, S :≤0.010%, P+S≤0.025%, Al:0.020 ~ 0.040, Cr :≤0.025%, Ni :≤0.025%, Cu :≤0.20%, 37Mn is to residual element Pb+Sn+As+Sb+Bi≤300ppm in steel in addition, wherein gas content: H≤2ppm, O≤30ppm, N≤60ppm in Sn≤150ppm, As≤150ppm, V+Nb+Ti+B+Zr≤0.15%, steel.
2. according to claim, gas vessel 37Mn justifies the production method of base, it is characterized in that, the technique of described top and bottom combined blown converter is: adopt top and bottom combined blown converter to realize the first refining of molten steel, tapping process controls the lower quantity of slag 30 ~ 60mm, prevent rephosphorization, according to mass percent, tapping [C]: 0.7-0.12%, [P]: 0-0.009%.
3. the production method of gas vessel 37Mn circle base described in 1 is wanted according to right, it is characterized in that, the technique of described LF refining furnace is: feed by 1.8 ~ 2.2m/t the Al line that diameter is 12mm after the adjustment of composition, temperature, and in control steel, dissolved aluminum mass content is at 0.030-0.050%; Described VD vacuum oven refining procedure: molten steel vacuum-treat requires to keep 15 ~ 20 minutes under vacuum tightness≤67Pa, broken empty rear hello diameter is the CaSi silk 0.8 ~ 1.2m/t of 13mm, after hello silk terminates, soft argon blowing time 9 ~ 15 minutes, molten steel departures hydrogen richness is 0 ~ 2ppm; Nitrogen content is 50 ~ 60ppm, and oxygen level is 20 ~ 30ppm.
4. the production method of gas vessel 37Mn circle base described in 1 is wanted according to right; it is characterized in that; whole process protection cast in described casting process; prevent secondary oxidation of steel, ensure the purity of molten steel, middle bag storing temperature 1150-1200 DEG C; the superheating temperature of tundish liquid level 900mm ± 20mm, mould liquid level fluctuation ± 3mm, molten steel controls within the scope of 20-30 DEG C; stable pulling rate is 1.6 ~ 3.2m/min, uses M-EMS, and the strand cooling in heap that rolls off the production line is not less than 24 hours.
5. want the production method of gas vessel 37Mn circle base described in 5 according to right, it is characterized in that, described stable pulling rate according to the scope of different size pulling rate is: Φ 150mm:2.8 ~ 3.0m/min; Φ 160mm:2.5 ~ 2.8m/min; Φ 180mm:2.2 ~ 2.4m/min; Φ 200mm:1.8 ~ 2.1m/min; Φ 210mm:1.6 ~ 1.8m/min.
CN201510647938.7A 2015-10-09 2015-10-09 Production method of 37 Mn round billets for air cylinders Pending CN105331885A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510647938.7A CN105331885A (en) 2015-10-09 2015-10-09 Production method of 37 Mn round billets for air cylinders

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510647938.7A CN105331885A (en) 2015-10-09 2015-10-09 Production method of 37 Mn round billets for air cylinders

Publications (1)

Publication Number Publication Date
CN105331885A true CN105331885A (en) 2016-02-17

Family

ID=55282643

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510647938.7A Pending CN105331885A (en) 2015-10-09 2015-10-09 Production method of 37 Mn round billets for air cylinders

Country Status (1)

Country Link
CN (1) CN105331885A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105586531A (en) * 2016-03-23 2016-05-18 攀钢集团攀枝花钢铁研究院有限公司 Production method capable of effectively controlling quality of 37Mn round pipe billet steel casting blank
CN105603300A (en) * 2016-03-23 2016-05-25 攀钢集团攀枝花钢铁研究院有限公司 Center segregation control method of phi280mm 35CrMo circular tube blank
CN105624540A (en) * 2016-03-23 2016-06-01 攀钢集团攀枝花钢铁研究院有限公司 Control method of equiaxial crystal ratio of 30CrMo round pipe billet and steel casting blank
CN105695657A (en) * 2016-03-23 2016-06-22 攀钢集团攀枝花钢铁研究院有限公司 Method for controlling blank casting quality of phi-280mm 30Mn circular tube blank
CN105695659A (en) * 2016-03-23 2016-06-22 攀钢集团攀枝花钢铁研究院有限公司 Method for controlling blank casting quality of phi-280mm 37Mn circular tube blank
CN105779869A (en) * 2016-03-23 2016-07-20 攀钢集团攀枝花钢铁研究院有限公司 Internal quality control method of 30Mn tube bloom steel cast blanks
CN107747041A (en) * 2017-11-01 2018-03-02 承德建龙特殊钢有限公司 A kind of normalizing state manganese systems air bottle steel and preparation method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101086203A (en) * 2007-07-19 2007-12-12 天津钢铁有限公司 Method for producing continuous casting round billet for petroleum bush using convertor process
CN101088663A (en) * 2007-07-19 2007-12-19 天津钢铁有限公司 Converter process of producing continuously cast circular steel billet for high pressure boiler pipe
CN101701277A (en) * 2009-11-25 2010-05-05 天津钢铁集团有限公司 Method for smelting steel round blank of air cylinder by convertor process
CN101928874A (en) * 2010-07-30 2010-12-29 天津钢铁集团有限公司 Method for smelting steel round billet for automobile axle shaft sleeve by using converter process

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101086203A (en) * 2007-07-19 2007-12-12 天津钢铁有限公司 Method for producing continuous casting round billet for petroleum bush using convertor process
CN101088663A (en) * 2007-07-19 2007-12-19 天津钢铁有限公司 Converter process of producing continuously cast circular steel billet for high pressure boiler pipe
CN101701277A (en) * 2009-11-25 2010-05-05 天津钢铁集团有限公司 Method for smelting steel round blank of air cylinder by convertor process
CN101928874A (en) * 2010-07-30 2010-12-29 天津钢铁集团有限公司 Method for smelting steel round billet for automobile axle shaft sleeve by using converter process

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105586531A (en) * 2016-03-23 2016-05-18 攀钢集团攀枝花钢铁研究院有限公司 Production method capable of effectively controlling quality of 37Mn round pipe billet steel casting blank
CN105603300A (en) * 2016-03-23 2016-05-25 攀钢集团攀枝花钢铁研究院有限公司 Center segregation control method of phi280mm 35CrMo circular tube blank
CN105624540A (en) * 2016-03-23 2016-06-01 攀钢集团攀枝花钢铁研究院有限公司 Control method of equiaxial crystal ratio of 30CrMo round pipe billet and steel casting blank
CN105695657A (en) * 2016-03-23 2016-06-22 攀钢集团攀枝花钢铁研究院有限公司 Method for controlling blank casting quality of phi-280mm 30Mn circular tube blank
CN105695659A (en) * 2016-03-23 2016-06-22 攀钢集团攀枝花钢铁研究院有限公司 Method for controlling blank casting quality of phi-280mm 37Mn circular tube blank
CN105779869A (en) * 2016-03-23 2016-07-20 攀钢集团攀枝花钢铁研究院有限公司 Internal quality control method of 30Mn tube bloom steel cast blanks
CN105695657B (en) * 2016-03-23 2018-06-05 攀钢集团攀枝花钢铁研究院有限公司 The 30Mn circular pipe blank slab quality control methods of φ 280mm
CN107747041A (en) * 2017-11-01 2018-03-02 承德建龙特殊钢有限公司 A kind of normalizing state manganese systems air bottle steel and preparation method thereof
CN107747041B (en) * 2017-11-01 2020-03-03 承德建龙特殊钢有限公司 Normalized manganese gas cylinder steel and preparation method thereof

Similar Documents

Publication Publication Date Title
CN105331885A (en) Production method of 37 Mn round billets for air cylinders
CN103184304B (en) Technology for producing 38CrMoAl steel by converter-LF (low frequency)-RH (rockwell hardness)-continuous casting
CN104532102B (en) Manufacturing technology of large-sized carburized bearing steel G20Cr2Ni4A for wind electricity
CN103725966B (en) 100-150mm structural alloy steel 4140 slabs and production technology
CN102021488B (en) Steel for nuclear-island seamless steel tube and production method thereof
CN101086203B (en) Method for producing continuous casting round billet for petroleum bush using convertor process
CN105177215B (en) Efficient production process of high aluminum-alloy-content structure round steel
CN105861951B (en) Nickel and stainless steel super large-scale continuous casting billet manufacture method
CN102071287B (en) Method for melting high-temperature-resistance and high-pressure-resistance alloy steel
CN103031492B (en) High-toughness steel for gas cylinders and smelting method thereof
CN104561772B (en) A kind of 130mm~150mm thickness ultralow temperature steel plate and its production method
CN106312000A (en) 18CrNiMo7-6 round billet continuous casting method for vertical type continuous casting production gear steel
CN107350445B (en) The production method of carburizing bearing steel G20Cr2Ni4 continuous cast round billets
CN105316558B (en) Preparation method of boron-containing steel preventing casting blank corner cracking
CN103924030B (en) Smelting method of ultra-low oxygen pure steel
CN105537549B (en) The production method of 100 DEG C of low temperature seamless steel pipe steel continuous cast round billets
CN106011671A (en) Production method of H13 continuous casting billet
CN104975233A (en) Production method of super-high strength and high tenacity structural alloy steel continuous cast round billet
CN108265228A (en) A kind of production method of high cutting ability steel
CN106591681B (en) The method for refining of high-purity hot-work die Electro Slag Remelting Steel
CN107447157A (en) A kind of cold-forging steel and its manufacturing process
CN103225034B (en) Method for improving yielding rate of ultra pure ferrite stainless steel titanium
CN103071772B (en) Method for continuous casting production of 4Cr5MoSiV1 steel
CN100522417C (en) Converter process of producing continuously cast circular steel billet for high pressure boiler pipe
CN106947914A (en) A kind of steel ingot of forging pipe die

Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20160217

RJ01 Rejection of invention patent application after publication