CN1189584C - High-strength packaging steel band and thermal treatment process thereof - Google Patents

High-strength packaging steel band and thermal treatment process thereof Download PDF

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Publication number
CN1189584C
CN1189584C CN 02109635 CN02109635A CN1189584C CN 1189584 C CN1189584 C CN 1189584C CN 02109635 CN02109635 CN 02109635 CN 02109635 A CN02109635 A CN 02109635A CN 1189584 C CN1189584 C CN 1189584C
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steel band
steel
steel strip
temperature
thermal treatment
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CN1463899A (en
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王洪珂
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ANSHAN FALAN COMPANY LIMITED
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王洪珂
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Abstract

The present invention discloses a high-strength packing steel strip and a heat treatment technology thereof. The steel strip comprises the components in weight percentage: 0.22 to 0.29 of C, 0 to 0.015 of Si, 1.30 to 1.5 of Mn, 0 to 0.015 of P, 0 to 0.010 of S, more than 0.015 of Al, more than 0.012 of Nb and Fe as the rest. The high-strength packing steel strip has the technological process that the steel strip enters an electric heating furnace through a material guiding roller, the temperature of the furnace is from 550 to 650 DEG C, the running speed of the steel strip is from 2.5 to 3.5 m/min, the tapping temperature of the steel strip is from 450 to 550 DEG C, and the steel strip is naturally cooled by wind after being discharged outside the furnace. The mechanical performance of the steel strip is stable, and the present invention not only can satisfy the performance requirements for the high-strength packing steel strip but also can replace to carry out a modified treatment (quenching and backfire) technology during the manufacture of other steel strips. The present invention has the advantages of low cost and no pollution.

Description

A kind of high-intensity packing steel belt and thermal treatment process
Affiliated field
The present invention relates to the steel band that a kind of industrial packaging is used, specifically is a kind of thermal treatment process that high-intensity packing steel belt that industrial packaging uses and electrically heated are turned blue that is used for.
Background technology
Steel belt for packages is divided into low strength steel band, middle intensity and high-strength steel strip three major types by mechanical property, and middle low strength steel band generally adopts the structural carbon steel manufacturing.And high-strength steel strip need adopt low alloy steel, structural alloy steel or carbon constructional quality steel to make.
From the processing method of Production and Packaging steel band, in the production, the technical process of low strength steel band is generally: hot-rolled coil-raw material slitting-pickling-cold rolling-dissecing itemize-electrically heated turns blue.And the technical process of producing high-strength steel strip is generally hot-rolled coil-raw material slitting-pickling-cold rolling-modifier treatment-dissect itemize.
From top production, in low strength steel band and the technical process of producing high-strength steel strip as can be seen: in the production, the low strength steel band only need adopt structural carbon steel, can finish by the electrically heated technology of turning blue, need adopt low alloy steel, structural alloy steel or carbon constructional quality steel and produce high-strength steel strip, just can finish by modifier treatment (quenching+tempering).If adopt low alloy steel structural alloy steel or carbon constructional quality steel, be to be difficult to produce (tensile strength: be not less than 880MPa, elongation: be not less than 8%) of high-intensity packing with steel band with the electrically heated technology of turning blue.So, produce the high-intensity packing steel band at present, generally adopt the processing method of modifier treatment to produce.And required equipment, the technology of the processing method that adopts modifier treatment is all complicated, the production cost height, and also patenting also can cause environmental pollution.
Summary of the invention
The thermal treatment process that the object of the present invention is to provide a kind of electrically heated that is used for high-intensity packing steel belt that industrial packaging uses and this steel band to turn blue.
This composition that is used for the high-intensity packing steel belt that industrial packaging uses is (weight percent)
C:0.22~0.29,Si:≤0.015,Mn:1.30~1.5,P≤0.015,S≤0.010,
Als:0.015, Nb:0.012, surplus is Fe.
The present invention is used for the thermal treatment process that high-intensity packing steel belt electrically heated that industrial packaging uses turns blue: adopting the hot-rolled coil of mentioned component is raw material, through the raw material slitting, pickling, cold rolling, dissect itemize, owing to exist the phenomenon of work hardening in the cold-rolled process, make through the steel band after cold rolling and have very high tensile strength, and unit elongation reduces, do not reach the performance requriements of high-intensity packing with steel band, so the processing method that the present invention adopts electrically heated to turn blue is replied it softening, its technological process is such, steel band enters electrical heater through citation roller, temperature is 550 ℃~650 ℃ in the stove, the speed of its steel band is 2.5m/min~3.5m/min, and its speed is directly proportional with temperature and body of heater length, and steel band is heated in process furnace, the steel band tapping temperature be 450 ℃~more than 550 ℃, steel band come out of the stove the back natural air cooled.
Advantage of the present invention is, adopt this special steel grade, heat the high-intensity packing steel band that the processing method of turning blue is produced by continuous electric, stable mechanical performance, not only satisfy the performance requriements of high-intensity packing with steel band, required modifier treatment (quenching+tempering) technology when also alternative low alloy steel, structural alloy steel or carbon constructional quality steel are made steel band, its cost is low, and is pollution-free.The steel band of this composition is not less than 880MPa through its tensile strength of mechanical property after its thermal treatment, and elongation meets the requirement of industrial high-intensity packing with steel band fully greater than 8%.
Embodiment
Be specific embodiments of the invention below, a kind of high-intensity packing steel belt, its composition are (weight percent) C:0.25, Si:0.015, and Mn:1.4, P≤0.015, S≤0.010, Als:0.015, Nb:0.012, surplus is Fe.In order to increase the intensity of this steel band, the content of C is 0.25 in this steel grade, Si can improve the intensity and the hardness of steel, but reduce elongation, therefore the content of controlling Si for less than: 0.015, Mn can improve intensity and the hardness after hot rolling, simultaneously can also eliminate the harmful effect of Si in steel, the content that adds Mn in this steel grade is 1.4, in order to improve the unit elongation of steel band, the Als of adding 0.015 in this steel grade is the tensile strength that improves in the steel band, adds 0.012 Nb in the steel grade of this steel band.
Adopting the hot-rolled coil of mentioned component is raw material, through the raw material slitting, pickling, cold rolling, dissect itemize, because cold-rolled process exists the phenomenon of work hardening, make through the steel band after cold rolling and have very high tensile strength, and unit elongation reduces, do not reach the performance requriements of high-intensity packing with steel band, so the processing method that the present invention adopts electrically heated to turn blue is replied it softening, its technological process is such, steel band enters electrical heater through citation roller, and temperature is 630 ℃ in the stove, and the speed of its steel band is 2.5m/min, its speed is directly proportional with temperature and body of heater length, steel band is heated in process furnace, and the steel band tapping temperature is about 520 ℃, and is natural air cooled after steel band is come out of the stove, its finished product is that the surface has blue gloss, and physicals improves.The metallographic structure of experimental determination steel band is iron element+perlite fibrous tissue, and tensile strength reaches 920MPa, and elongation meets the requirement of industrial high-intensity packing with steel band fully greater than 11%.

Claims (4)

1, a kind of high-intensity packing steel belt is characterized in that the composition of this steel band is (weight percent) C:0.22~0.29, Si :≤0.015, and Mn:1.30~1.5, P≤0.015, S≤0.010, Als:0.015, Nb:0.012, surplus is Fe.
2, a kind of high-intensity packing steel belt according to claim 1, its composition is divided into (weight percent) C:0.25, Si:0.015, Mn:1.4, P≤0.015, S≤0.010, Als:0.015, Nb:0.012, surplus is Fe.
3, the thermal treatment process of a kind of high-intensity packing steel belt according to claim 1, it is characterized in that steel band enters electrical heater through citation roller, furnace temperature is 550 ℃~650 ℃, the speed of its steel band operation is 2.5m/min~3.5m/min, its speed is directly proportional with temperature and body of heater length, the steel band tapping temperature is 450 ℃~550 ℃, and is natural air cooled after steel band is come out of the stove.
4, the thermal treatment process of a kind of high-intensity packing steel belt according to claim 3, it is characterized in that steel band enters electrical heater through citation roller, temperature is 630 ℃ in the stove, and the speed of its steel band is 2.5m/min, and steel band is at the process furnace internal heating, the steel band tapping temperature is 520 ℃, natural air cooled after steel band is come out of the stove, its finished product is that the surface has blue gloss, and the metallographic structure of steel band is ferrite+perlite fibrous tissue, tensile strength reaches 920MPa, and elongation reaches 11%.
CN 02109635 2002-04-30 2002-04-30 High-strength packaging steel band and thermal treatment process thereof Active CN1189584C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 02109635 CN1189584C (en) 2002-04-30 2002-04-30 High-strength packaging steel band and thermal treatment process thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 02109635 CN1189584C (en) 2002-04-30 2002-04-30 High-strength packaging steel band and thermal treatment process thereof

Publications (2)

Publication Number Publication Date
CN1463899A CN1463899A (en) 2003-12-31
CN1189584C true CN1189584C (en) 2005-02-16

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Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1318630C (en) * 2004-04-13 2007-05-30 王洪珂 High strength packaging steel strip and its producing process
CN100431776C (en) * 2006-02-11 2008-11-12 鞍山市发蓝钢带有限责任公司 Automatic production line for producing high-strength color coated package steel strip by utilizing non-tempering process
CN102400037B (en) * 2010-09-07 2014-05-07 鞍钢股份有限公司 Ultra high strength steel strip for package, and preparation method thereof
CN103820709B (en) * 2014-03-05 2016-04-20 武汉钢铁(集团)公司 A kind of thickness is high-strength binding band and the production method thereof of 1.0mm
CN104018084B (en) * 2014-06-23 2016-02-24 武汉钢铁(集团)公司 The ornamental tie of a kind of tensile strength >=950MPa and production method thereof

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Address after: Liaoning city of Anshan Province Qianshan old Fort min Street No. 38

Patentee after: Anshan FA FA steel belt Co., Ltd.

Address before: Liaoning city of Anshan Province Qianshan old Fort min Street No. 38

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