CN103361546A - Ultra-high strength strapping raw sheet and manufacturing method thereof - Google Patents

Ultra-high strength strapping raw sheet and manufacturing method thereof Download PDF

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Publication number
CN103361546A
CN103361546A CN2012100921708A CN201210092170A CN103361546A CN 103361546 A CN103361546 A CN 103361546A CN 2012100921708 A CN2012100921708 A CN 2012100921708A CN 201210092170 A CN201210092170 A CN 201210092170A CN 103361546 A CN103361546 A CN 103361546A
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China
Prior art keywords
steel
raw sheet
strength
rolling
tie
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CN2012100921708A
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Chinese (zh)
Inventor
李锋
刘仁东
吕家舜
杨洪刚
李文斌
贾吉祥
黄秋菊
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Angang Steel Co Ltd
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Angang Steel Co Ltd
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Priority to CN2012100921708A priority Critical patent/CN103361546A/en
Publication of CN103361546A publication Critical patent/CN103361546A/en
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Abstract

The invention provides an ultra-high strength strapping raw sheet and a manufacturing method thereof. The raw sheet comprises the following chemical components by weight percent: 0.15-0.60% of C, 0.25-1.80% of Si, 1.0-3.5% of Mn, the balance of Fe and inevitable impurities, wherein one or more of 0.05-1.00% of Cr, 0.05-0.50% of Ni, 0.01-0.50% of Mo, 0.002-0.010% of B, 0.01-0.10% of Ti, 0.01-0.10% of V, and 0.01-0.10% of Nb also can be added to the steel. The manufacturing method of the raw sheet mainly adopts the processes of smelting, casting, hot rolling, pickling and cold rolling; the hot rolling finishing temperature is 850-950 DEG C; the hot-rolling coiling temperature is 550-750 DEG C; and the cold rolling reduction ratio is 50-70%. The tensile strength of the raw sheet disclosed by the invention after the process of isothermal quenching, or quenching and tempering can achieve over 1250 MPa; the extensibility can be up to over 12%; the requirements of wool and cotton packaging on the high strength and high tenacity are met; the section size of the strapping steel is reduced; consumption of steel products is reduced; and the ultra-high strength strapping raw sheet has a broad popularization and application prospect.

Description

The strong tie raw sheet of superelevation and manufacture method thereof
Technical field
The invention belongs to tie and use the rings territory, particularly the strong tie raw sheet of a kind of superelevation and manufacture method thereof.
Background technology
Use the rings territory at tie, in order to improve the service efficiency of steel, guarantee Package Quality, satisfy the requirement of various industries, continually develop out high-strength binding band steel and manufacturing technology thereof, wherein wool, cotton packing etc. are had relatively high expectations to the strength and toughness of tie steel.It is that 0.20%-0.25%, manganese content are that 0.30%-0.60%, boron are the aluminium killed steel of 1.07-1.43 with the ratio of free nitrogen that CN95103707.2 adopts carbon content, 600 ℃ of coiling temperatures, cold rolling draft about 80%, the tie steel tensile strength of making is 880-1090MPa, unit elongation is not more than 4%, and this tie need to carry out zinc-plated processing; It is that 0.22%-0.29%, manganese content are the chill steel band of 1.3%-1.5%, aluminium content 〉=0.015%, content of niobium 〉=0.012% that CN02109635.X adopts carbon content, after 450-550 ℃ of processing, can make the tie steel of tensile strength 〉=920MPa, unit elongation 〉=11%; It is that 0.8%-1.2%, silicone content are that 0.2%-0.4%, titanium content are that 0.025%-0.045%, content of vanadium are the steel of 0.05%-0.07% that US20030034100, CN03104312.7 adopt carbon content<0.2%, manganese content, finishing temperature is 900 ℃, coiling temperature is 570 ℃, be rolled into 0.8mm through 60% cold rolling draft, be quickly cooled to room temperature after being heated to two-phase region, the tie steel tensile strength of making is 970-1070MPa, unit elongation A 50Be 10-14%; , to adopt carbon content be that 0.15%-0.28%, silicone content are that 0.005%-0.07%, manganese content are the chill steel band of 1.2%-1.7% to CN200410031162.8, after 400-600 ℃ of processing, can make the tie steel of tensile strength 〉=930MPa, unit elongation 〉=8%; It is that 0.11%-0.17%, silicone content are that 0%-0.05%, manganese content are the chill steel band of 0.25%-0.55% that CN200910300597 adopts carbon content, after 380-420 ℃ of processing, can make the tie steel of tensile strength 〉=800MPa, unit elongation 〉=10%; It is that 0.25%-0.42%, silicone content are not more than 0.45%, manganese content is the chill steel band of 1.0%-2.0% that CN200910045451.6 adopts carbon content, after 430-580 ℃ of blue annealing, can make the tie steel of tensile strength 〉=1000MPa; It is that 0.25%-0.35%, Mn content are that 1.0-2.0, Si are not more than 0.4% steel that CN200910046229.8 adopts carbon content, through hot rolling, cold rolling after, adopt the thermal treatment process of ferrite+rapid quenching+tempering of austenite two-phase region, can make the tie steel of tensile strength 〉=1100MPa, unit elongation 〉=10%; US20070235112 provides a kind of cold rolling fully hard matter tie steel and manufacture method thereof, the chemical ingredients of steel is: carbon 0.02%-0.25%, manganese 0.15%-1.5%, aluminium 0.01%-0.12%, nitrogen 0.04%-0.03%, copper 0.04%-0.50%, nickel 0.03%-0.25%, molybdenum 0.02%-0.25%, chromium 0.03%-0.25%, silicon are not more than 0.25%, and tie steel tensile strength is about 900MPa; EP14288295 adopts C-Mn-Si steel lead patenting technique, and production tensile strength is 1170-1240MPa, and unit elongation is 6.5% tie steel; US5542995 adopts that C is 0.56%, the AISI1055 bar of Mn0.70%, is rolled into flat tie, and tensile strength can reach 1170MPa, and unit elongation is 5%, and this technology manufacturing process is complicated, and dimensional precision is difficult to guarantee.
Be summed up, the main production of high-strength binding band steel has four kinds at present: the one, adopt the technique of annealing after the cold rolling reinforcement, and take full advantage of cold rolling work hardening, the tie steel toughness that this technique is made is lower, and it is larger that performance is affected by raw material; The 2nd, the bainite reinforcing process of employing lead patenting, but its equipment is complicated, particularly adopts lead bath to process, and can cause serious environmental pollution, and some countries have limited use; The 3rd, the martensite strengthening technique that adopts two-phase region to quench can adopt water as quenchant, non-environmental-pollution; The 4th, adopt rod hot rolling to become flat material technique.Tensile strength reaches 1250MPa, unit elongation reaches 12% the strong tie steel of superelevation and raw sheet thereof but above-mentioned technology can't be made.
Summary of the invention
The object of the present invention is to provide a kind of tensile strength to reach 1250MPa, unit elongation reaches 12% superstrength tie raw sheet and manufacture method thereof.
1250MPa grade super strength tie raw sheet of the present invention adopts smelting, casting, hot rolling, pickling, cold-rolling process to produce, and smelting can be adopted the variety of way deoxidations such as silicon deoxidation, aluminium deoxidation and aluminium silicon complex deoxidization, it is characterized in that:
A) chemical ingredients of steel is C0.15%-0.60%, Si0.25%-1.80%, Mn1.0%-3.5%, and all the other are iron and inevitable impurity.
B) can also add among 0.05%-1.00%Cr, 0.05%-0.50%Ni, 0.01%-0.50%Mo, 0.002%-0.010%B, 0.01%-0.10%Ti, 0.01%-0.10%V, the 0.01%-0.10%Nb one or more in the steel.
C) hot rolling finishing temperature is 850-950 ℃, and the hot rolling reeling temperature is 550-750 ℃, cold rolling draft 50-70%.
D) strand can adopt the hot-loading and hot-conveying mode to enter stove, and charging temperature is not less than 600 ℃.
Carbon is most economical in the steel, topmost alloying element, and is all very large to final tissue and the intensity effect of steel, can obviously improve hardening capacity and the hardenability of steel.If carbon content is excessively low, when becoming martensite, austenitic transformation can not produce enough distortion to strengthen martensite, the undercapacity of steel plate; But too high carbon content has a negative impact to plasticity, toughness, weldability.Therefore its content range is 0.15%-0.60%.
Manganese is displaced type solution strengthening element, can change austenite transformation temperature, is conducive to obtain tiny phase-change product, improves the hardening capacity of steel, and the content range of manganese is 1.0%-3.5%
Silicon is the solution strengthening element, can change austenite transformation temperature, can also suppress cementite and separate out stable austenite; But too high silicon can make the oxide film of surface of steel plate be difficult to remove, and the content range of silicon is 0.25%-1.80%.
In order to improve hardening capacity, can also add chromium and boron, chromium can also play solution strengthening effect and improve the solidity to corrosion of steel.The scope of chromium and boron is respectively 0.05%-1.00% and 0.002%-0.010%.
Effect and the manganese of nickel are similar, can improve in addition the corrosion resisting property of tie steel, but the price of nickel element are higher, and its content range is 0.05%-0.50%.
The adding of molybdenum can improve hardening capacity, improves simultaneously the stability of steel, and its content range is 0.01%-0.50%.
Titanium, vanadium, niobium mainly play the effect of crystal grain thinning and precipitation strength, and its content range is 0.01%-0.10%.
The invention provides a kind of tensile strength and reach 1250MPa, unit elongation reaches 12% superstrength tie raw sheet and manufacture method thereof, this steel after heat treatment can satisfy wool, cotton is packed to the demand of high strength, high tenacity, reduce tie steel sectional dimension, reduce steel consumption, have wide popularizing application prospect.
Embodiment
1250MPa grade super strength tie raw sheet of the present invention adopts smelting, casting, hot rolling, pickling, cold-rolling process production, and its chemical ingredients is as shown in table 1, and manufacturing process is as shown in table 2.The chemical ingredients of sequence number 1~3 is not corresponding with the technique of sequence number 1 in the table 2 in the table 1; The chemical ingredients of sequence number 4~6 is not corresponding with the technique of sequence number 2 in the table 2 in the table 1; The chemical ingredients of sequence number 7~9 is not corresponding with the technique of sequence number 3 in the table 2 in the table 1; Sequence number 10 in the table 1,11 chemical ingredients are not corresponding with the technique of sequence number 4 in the table 2; Sequence number 12 in the table 1,13 chemical ingredients are not corresponding with the technique of sequence number 5 in the table 2; Sequence number 14 in the table 1,15 chemical ingredients are not corresponding with the technique of sequence number 6 in the table 2.
Table 1 chemical ingredients, wt%
Sequence number C Si Mn Cr Ni Mo B Ti V Nb
1 0.15 1 2.5
2 0.25 1.8 2
3 0.35 1.5 2
4 0.45 0.5 2
5 0.45 1 1 0.2 0.04
6 0.60 0.25 1.5
7 0.30 0.50 3.5
8 0.15 1 2.5 0.5 0.2
9 0.25 1 1.8 0.05 0.05 0.01 0.01 0.01
10 0.15 1 2.5 0.5 0.2 0.2
11 0.15 1 2.5 0.5 0.2 0.01
12 0.25 1.6 2 0.1
13 0.25 1.6 2 0.1
14 0.25 1.6 2 0.1
15 0.25 1.6 2 0.1 0.1 0.1 0.002 0.02 0.02 0.02
Table 2 main technologic parameters
Sequence number Charging temperature, ℃ Final rolling temperature ℃ Coiling temperature ℃ Cold rolling draft, %
1 950 650 55
2 900 700 60
3 850 600 65
4 800 850 550 50
5 700 900 750 70
6 600 950 650 55
According to the tie steel raw sheet that table 1, table 2 are made, be heated to the above temperature of two-phase region and keep for some time, its tensile strength can reach more than the 1250MPa behind isothermal quenching or quenching+tempering, and unit elongation can reach more than 12%.

Claims (4)

1. strong tie raw sheet of superelevation is characterized in that the weight percent of the chemical ingredients of steel is: C0.15%-0.60%, Si0.25%-1.80%, Mn1.0%-3.5%, all the other are iron and inevitable impurity.
2. the strong tie raw sheet of superelevation according to claim 1 is characterized in that adding in the steel among 0.05%-1.00%Cr, 0.05%-0.50%Ni, 0.01%-0.50%Mo, 0.002%-0.010%B, 0.01%-0.10%Ti, 0.01%-0.10%V, the 0.01%-0.10%Nb one or more.
3. one kind is used for claim 1 or the former board fabrication method of 2 described superstrength ties, main smelting, casting, hot rolling, pickling, the cold-rolling process of adopting, it is characterized in that: hot rolling finishing temperature is 850-950 ℃, and the hot rolling reeling temperature is 550-750 ℃, cold rolling draft 50%-70%.
4. the former board fabrication method of superstrength tie according to claim 3 is characterized in that: strand adopts the hot-loading and hot-conveying mode to enter stove, and charging temperature is not less than 600 ℃.
CN2012100921708A 2012-03-30 2012-03-30 Ultra-high strength strapping raw sheet and manufacturing method thereof Pending CN103361546A (en)

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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103805852A (en) * 2014-03-05 2014-05-21 武汉钢铁(集团)公司 High-strength aluminum-plated strap and production method thereof
CN103805853A (en) * 2014-03-05 2014-05-21 武汉钢铁(集团)公司 High-strength hot galvanized binding ribbon and production method thereof
CN103805846A (en) * 2014-03-05 2014-05-21 武汉钢铁(集团)公司 High-strength spot welding strapping band and production method thereof
CN103820725A (en) * 2014-03-05 2014-05-28 武汉钢铁(集团)公司 Binding strap with the thickness of 1.2 mm for high-temperature annealing and manufacturing method of binding strap
CN103820724A (en) * 2014-03-05 2014-05-28 武汉钢铁(集团)公司 High-strength anti-corrosion binding belt with thickness of 1.1 mm and production method thereof
CN103938093A (en) * 2014-04-21 2014-07-23 武汉钢铁(集团)公司 Coated and plated bundling belt with thickness of 0.3mm and production method thereof
CN103952624A (en) * 2014-04-21 2014-07-30 武汉钢铁(集团)公司 Ultrahigh-strength painted bundling belt with thickness of 0.2mm and production method thereof
CN104018084A (en) * 2014-06-23 2014-09-03 武汉钢铁(集团)公司 Decorative bundling belt with tensile strength of more than or equal to 950MPa and production method thereof
CN104046905A (en) * 2013-11-29 2014-09-17 攀钢集团攀枝花钢铁研究院有限公司 Continuous hot rolled band steel and preparation method thereof
CN106119722A (en) * 2016-08-12 2016-11-16 山东钢铁股份有限公司 Superelevation strong steel belt for packages hot rolling raw sheet and preparation method thereof
CN106636945A (en) * 2016-10-19 2017-05-10 芜湖孙杨信息咨询有限公司 Production method for high-strength boron-containing steel plate
CN107475622A (en) * 2017-09-05 2017-12-15 武汉钢铁有限公司 Steel plate and its manufacture method with good thermal processability energy
CN108411201A (en) * 2018-04-03 2018-08-17 新兴铸管股份有限公司 A kind of steel belt for packages and its production method of excellent corrosion resistance
CN109207851A (en) * 2018-09-28 2019-01-15 宝山钢铁股份有限公司 A kind of ultra-high strength steel plate and its manufacturing method
CN109457168A (en) * 2018-12-24 2019-03-12 宁波颂杰电器有限公司 Household gas range fuel gas conduit alloy and preparation method thereof and fuel gas conduit

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CN101805870A (en) * 2009-02-17 2010-08-18 宝山钢铁股份有限公司 High strength strapping steel with tensile strength over 1,100 MPa and manufacturing method thereof
CN102383031A (en) * 2011-10-28 2012-03-21 武汉钢铁(集团)公司 High-strength binding band and production method thereof

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US20030034100A1 (en) * 2001-08-02 2003-02-20 Doonan Jeffery W. Steel strapping
CN1521092A (en) * 2003-01-30 2004-08-18 伊利诺斯工具公司 Steel strapping
CN101805870A (en) * 2009-02-17 2010-08-18 宝山钢铁股份有限公司 High strength strapping steel with tensile strength over 1,100 MPa and manufacturing method thereof
CN102383031A (en) * 2011-10-28 2012-03-21 武汉钢铁(集团)公司 High-strength binding band and production method thereof

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CN103805853B (en) * 2014-03-05 2016-03-16 武汉钢铁(集团)公司 A kind of high-strength hot-dip zinc-coated tie and production method thereof
CN103805853A (en) * 2014-03-05 2014-05-21 武汉钢铁(集团)公司 High-strength hot galvanized binding ribbon and production method thereof
CN103820725A (en) * 2014-03-05 2014-05-28 武汉钢铁(集团)公司 Binding strap with the thickness of 1.2 mm for high-temperature annealing and manufacturing method of binding strap
CN103820724A (en) * 2014-03-05 2014-05-28 武汉钢铁(集团)公司 High-strength anti-corrosion binding belt with thickness of 1.1 mm and production method thereof
CN103820725B (en) * 2014-03-05 2016-03-16 武汉钢铁(集团)公司 A kind of thick high temperature annealing tie of 1.2mm and production method thereof
CN103805852B (en) * 2014-03-05 2016-03-16 武汉钢铁(集团)公司 A kind of high strength is aluminized tie and production method thereof
CN103820724B (en) * 2014-03-05 2016-03-16 武汉钢铁(集团)公司 A kind of thickness is high-strength corrosion-resistant tie and the production method thereof of 1.1mm
CN103805846A (en) * 2014-03-05 2014-05-21 武汉钢铁(集团)公司 High-strength spot welding strapping band and production method thereof
CN103805852A (en) * 2014-03-05 2014-05-21 武汉钢铁(集团)公司 High-strength aluminum-plated strap and production method thereof
CN103952624A (en) * 2014-04-21 2014-07-30 武汉钢铁(集团)公司 Ultrahigh-strength painted bundling belt with thickness of 0.2mm and production method thereof
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CN103938093B (en) * 2014-04-21 2016-06-29 武汉钢铁(集团)公司 A kind of thickness is coating tie and the production method thereof of 0.3 mm
CN103952624B (en) * 2014-04-21 2016-08-24 武汉钢铁(集团)公司 A kind of thickness is superhigh intensity japanning tie and the production method thereof of 0.2 mm
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CN106119722A (en) * 2016-08-12 2016-11-16 山东钢铁股份有限公司 Superelevation strong steel belt for packages hot rolling raw sheet and preparation method thereof
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