CN102978512A - High-strength painted bundling belt and manufacturing method thereof - Google Patents
High-strength painted bundling belt and manufacturing method thereof Download PDFInfo
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- CN102978512A CN102978512A CN2012105590190A CN201210559019A CN102978512A CN 102978512 A CN102978512 A CN 102978512A CN 2012105590190 A CN2012105590190 A CN 2012105590190A CN 201210559019 A CN201210559019 A CN 201210559019A CN 102978512 A CN102978512 A CN 102978512A
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Abstract
The invention discloses a high-strength painted bundling belt. The high-strength painted bundling belt comprises the following chemical components by weight percent: 0.12-0.20% of C, 0.2-0.6% of Si, 1.2-2.0% of Mn, less than or equal to 0.025% of P, less than or equal to 0.02% of S and 0.01-0.05% of Nb. The high-strength painted bundling belt is prepared by the steps of smelting, casting a blank, and then carrying out hot-rolling to form coils; carrying out acid cleaning; carrying out cold rolling; uncoiling, splitting and conducting deburring; carrying out tempering treatment in a lead-bismuth furnace; carrying out water cooling; painting by adopting a dip-coating wiping mode and carrying out sectional baking; and waxing and drying by adopting hot air. The high-strength painted bundling belt disclosed by the invention has the advantages that since a proper amount of Nb is added, the influence on crystal lattice distortion caused by overlarge volume mismatching of enhanced element atoms and Fe atoms is overcome, namely a value sigma b is increased, the overhigh yielding-to-tensile ratio can be restrained, and a steel belt with high strength, good elasticity, excellent mechanical property is produced; and the energy consumption is low, the process is simple, the painted surface is uniform, the anti-rusting performance is good and the process is simple.
Description
Technical field
The invention belongs to the steel belt for packages field, specifically a kind of high-strength japanning tie and manufacture method.
Background technology
Steel belt for packages also claims tie or steel band, is a kind of narrow strip wrapping material that have than high-tensile and certain unit elongation.It is widely used in the packing bundling of the products such as Iron And Steel Industry, building industry, non-ferrous metal industry, light textile goods, mechanical industry.
Steel belt for packages can be divided into japanning tie, the tie that turns blue, zinc-plated tie by the condition of surface classification, and the japanning tie is widely used in silicon steel and cold rolled sheet bailing; The tie that turns blue is widely used in rolling up to reheat greatly rolling coiled sheet and section bar bailing; Zinc-plated tie is applied to the bailings such as wooden case, colour coated plate, steel plate.Along with the appearance requirement of market to the packing of product improves constantly, the improving constantly of domestic silicon steel and cold rolling production technology, progressively substituting import one silicon steel and high-precision cold rolling sheets, the demand of japanning tie constantly increases.
From the processing method of Production and Packaging with steel band, the technical process of Production and Packaging steel band is generally: hot rolled coil-pickling-cold rolling-itemize-electrically heated is turned blue-curling finished product.And the technological process of production of producing high-strength steel strip is generally hot rolled coil-pickling-cold rolling-itemize-thermal treatment-coating-finished product packing.
At present, produce high-strength steel strip and need to adopt low-alloy, structural alloy steel or carbon constructional quality steel, just can finish by modifier treatment.There is the technique more complicated in it, the deficiency that production cost is higher; Adopt induction heating mode to dry to japanning at present, it exists Heating temperature to be difficult to control, and maintenance of the equipment is more loaded down with trivial details, the higher deficiency that waits of production cost.
Through retrieval, China Patent Publication No. is that grant number is the patent documentation of CN101886217A, it discloses a kind of middle intensity package steel strip and production method, the composition of its steel band is (weight percent): C:0.05～0.1%, Si0.1～0.15%, Mn:1.0～1.55%, P≤0.05%, S≤0.05%, surplus is Fe, and its technique is cold-rolled steel strip through behind the itemize, adopts the processing of turning blue of the mode of electromagnetic induction coil heating in medium frequency, 420～440 ℃ of the temperature of turning blue, soaking time 20～30S, the steel band rear water-cooled of coming out of the stove, water temperature is kept 30～40 ℃, adopt induction heating mode that coated steel band is dried, 230～260 ℃ of bake out temperatures can be produced tensile strength and be not less than 800Mpa, and unit elongation is not less than 6% middle intensity steel band, the deficiency that exists is steel band tensile strength, unit elongation is lower, can't satisfy all multi-product packing demands, and electromagnetic induction heating in medium frequency working method is complicated, maintenance of the equipment is loaded down with trivial details, and production cost is higher.
China Patent Publication No. is the patent documentation of CN1189584CA, it discloses a kind of high-strength binding band steel and thermal treatment process, its raw material steel grade adopts following design mix: C:0.22～0.29%, Mn:1.3～1.5%, Si≤0.15%, P≤0.15%, S≤0.01%, Als:0.015, Nb:0.12, surplus is Fe, and its production technique is cold-rolled steel strip, through entering electrical heater through citation roller after the uncoiling sub-cut, 550～650 ℃ of furnace temperature, steel belt operating speed 2.5～3.5m/min, 450 ℃～550 ℃ of steel band tapping temperatures, it is rear natural air cooled to come out of the stove, can produce tensile strength by above steel grade and thermal treatment process and be not less than 880Mpa, unit elongation is not less than 8% high-strength binding band, and the deficiency of its existence is tensile strength, the mechanical propertys such as unit elongation are lower, discontented foot portions product packing demand; Steel belt operating speed is slow, and production efficiency is low; Temperature of Electric Heater is higher, and production cost is higher, and the temperature inequality easily causes product performance uneven, and the surface is through the processing of only turning blue, and surperficial rustless property is relatively poor, and surperficial salt-fog test＜2h is unfavorable for long-term storage behind the wrapped product.
Therefore, from production cost, market tie performance and outward appearance demand are considered that the production method of high strength japanning tie and lower cost has larger application prospect in reality is managed.
Summary of the invention
The object of the invention is to overcome rustless property and the relatively poor deficiency of visual appearance that prior art exists, provide a kind of and be not less than 950Mpa satisfying tensile strength, unit elongation A is not less than 9%, and rustless property and visual appearance are good, lower-cost high-strength japanning tie and preparation method thereof.
Realize the measure of above-mentioned purpose:
A kind of high-strength japanning tie, its chemical ingredients and weight percent content are: C:0.12～0.20 %; Si:0.2～0.6 %, Mn:1.2～2.0%; P :≤0.025%; S :≤0.02%, Nb:0.01～0.05%, surplus are Fe and inevitable impurity.
The method for preparing a kind of high-strength japanning tie, its step:
1) is rolled into volume behind smelting and the strand;
2) hot rolled coil is carried out pickling, and control the pickle solution temperature at 65～95 ℃, pickling speed is no more than 120 m/mins;
3) carry out cold rolling, control total reduction 65～80%, the steel plate tensile strength after the cold rolling end is not less than 980Mpa, unit elongation is not less than 5%;
4) carry out uncoiling, itemize, deburring;
5) carry out temper in the plumbous bismuth stove that Pb and the 20～40%Bi of atmosphere ratio 60～80% form, control the interior temperature of plumbous bismuth stove at 400～500 ℃, steel belt operating speed is at 4～6 m/mins;
6) carry out water-cooled, cooling temperature is no more than 200 ℃;
7) adopt dip-coating wiping mode to paint, control paint viscosity 18～35S; And adopt resistance-type heating segmentation baking japanning, and control first paragraph heated baking temperature 280～350oC, storing time are at 50～75S, and control second segment slow cooling storing temperature is at 250-320oC, and storing time is at 50～75S;
8) wax, and adopt hot-air seasoning, drying temperature is controlled at 150～300 oC, and be 60～80 S time of drying.
It is characterized in that: the acid number in the pickle solution is controlled at the 200-250 grams per liter.
The effect of each element and main technique among the present invention:
C: be the general strengthening element in the steel, the content of control C is to guarantee the steel band mechanical property;
Si: also use as a kind of strengthening element in steel, the content of control Si is to guarantee the surface property of product;
Mn: suitably increase the content of Mn, to improve intensity and the hardness of raw material, eliminate the harmful effect of S element;
Nb: add micro-Nb element, can play crystal grain thinning, optimize the effect of steel band performance;
Adopt the reason of resistance-type heating and segmentation baking japanning: why adopt resistance-type type of heating oven dry doped envelope, because it is compared with the induction type type of heating, induction type heating installation more complicated, the cost that once drops into is relatively high, inductive means (induction coil) interchangeability and adaptability are relatively poor, equipment maintenance cost is higher, and temperature control more complicated, and the resistance-type heater nonrecurring cost less input, easy to maintenance, production cost is lower, temperature control is simple to operation, japanning segmentation baking can guarantee the even oven dry of painting, and can guarantee again the continuity of high-speed production.
Adopt electric hot-air oven dry and control drying temperature at 150～300 oC, can guarantee that water-based wax is not perishable, moisture evaporates rapidly in the water-based wax, and wax evenly is attached to steel strip surface, guarantees evenly light of steel strip surface, and operating procedure is simple, and energy consumption cost is lower.
The present invention compared with prior art, the present invention controls Si, the content of Mn is strengthened steel band intensity and hardness, eliminated to greatest extent the harmful effect of S, the content of control Si guarantees the surface property of tie product, the content of control P and S is to improve the purity of steel, the an amount of Nb content that adds, overcome the excessive crystal lattice distortion effects that causes of strengthening element atom and Fe atomic volume mismatch, can improving σ b value, to suppress yield tensile ratio again too high, it is higher to obtain intensity, and elasticity is better, the steel band that the mechanical property each side is more excellent; And energy consumption is lower, and technique is simple, and painted surface is even, good antirust property, and technique is simple.
Embodiment
Embodiment 1
A kind of high-strength japanning tie, its chemical ingredients and weight percent content are: C:0.14%; Si:0.46 %, Mn:1.3%; P:0.023 %; S:0.02 %, Nb:0.019%, surplus is Fe and inevitable impurity.
The preparation measured step is rapid:
1) is rolled into volume behind smelting and the strand;
2) hot rolled coil is carried out pickling, the pickle solution temperature is at 65～68 ℃, and the acid number in the pickle solution is 210 grams per liters, and pickling speed is 115 m/mins;
3) carry out cold rollingly, total reduction is at 70 %, and the steel plate tensile strength after the cold rolling end is at 985Mpa, and unit elongation is 5.5%;
4) carry out uncoiling, itemize, deburring;
5) be to carry out temper in the plumbous bismuth stove that forms of 65%Pb+35%Bi in atmosphere, temperature is at 450～455 ℃ in the plumbous bismuth stove, and steel belt operating speed is at 5.0m/min;
6) carry out water-cooled, cooling temperature is no more than 195 ℃;
7) adopt japanning to adopt dip-coating wiping mode, control paint viscosity 23S; And adopt resistance-type heating segmentation baking japanning, and the first paragraph storing temperature is at 310 oC, and storing time is at 75 S, and the second segment storing temperature is at 265oC, and storing time is at 56 S;
8) wax, and adopt hot-air seasoning, drying temperature is controlled at 245～255 oC, and be 60S time of drying.
After testing, the tensile strength of japanning tie is 965Mpa, and unit elongation A is 9%, and alternating bending frequency 10 times (R=5mm) is without the brittle failure layering, and finish coatings is light evenly; Do butanone wiping experiment 41 times through painted surface, the antirust experiment of salt fog 8 hours finds no corrosion phenomena, reaches the requirement of industrial high-intensity packing steel belt.
Embodiment 2
A kind of high-strength japanning tie, its chemical ingredients and weight percent content are: C:0.16 %; Si:0.29 %, Mn:1.42%; P:0.012 %; S:0.014 %, Nb:0.021%, surplus is Fe and inevitable impurity.
The preparation measured step is rapid:
1) is rolled into volume behind smelting and the strand;
2) hot rolled coil is carried out pickling, the pickle solution temperature is at 70～73 ℃, and the acid number in the pickle solution is 235 grams per liters, and pickling speed is 110 m/mins;
3) carry out cold rollingly, total reduction is 68%, and the steel plate tensile strength after the cold rolling end is at 998Mpa, and unit elongation is 6.0%;
4) carry out uncoiling, itemize, deburring;
5) carry out temper in atmosphere is the plumbous bismuth stove of 70%Pb+30%Bi, temperature is at 482～485 ℃ in the plumbous bismuth stove, and steel belt operating speed is at 5.5m/min;
6) carry out water-cooled, cooling temperature is no more than 198 ℃;
7) adopt japanning to adopt dip-coating wiping mode, control paint viscosity 30S; And adopt resistance-type heating segmentation baking japanning, and the first paragraph storing temperature is at 330 oC, and storing time is at 70 S, and the second segment storing temperature is at 280 oC, and storing time is at 56 S;
8) wax, and adopt hot-air seasoning, drying temperature is controlled at 155～160 oC, and be 80S time of drying.
After testing, the tensile strength of japanning tie is 950Mpa, and unit elongation A is 9.5%, and alternating bending frequency 12 times (R=5mm) is without the brittle failure layering, and finish coatings is light evenly; Do butanone wiping experiment 37 times through painted surface, the antirust experiment of salt fog 5 hours finds no corrosion phenomena, reaches the requirement of industrial high-intensity packing steel belt.
Embodiment 3
A kind of high-strength japanning tie, its chemical ingredients and weight percent content are: C:0.18 %; Si:0.37 %, Mn:1.58%; P:0.018 %; S:0.019 %, Nb:0.014%, surplus is Fe and inevitable impurity.
The preparation measured step is rapid:
1) is rolled into volume behind smelting and the strand;
2) hot rolled coil is carried out pickling, the pickle solution temperature is at 76～79 ℃, and the acid number in the pickle solution is 250 grams per liters, and pickling speed is 113 m/mins;
3) carry out cold rollingly, total reduction is 73%, and the steel plate tensile strength after the cold rolling end is at 1008Mpa, and unit elongation is 6.0%;
4) carry out uncoiling, itemize, deburring;
5) carry out temper in atmosphere is the plumbous bismuth stove of 80%Pb+20%Bi, temperature is at 490～500 ℃ in the plumbous bismuth stove, and steel belt operating speed is at 6.0m/min;
6) carry out water-cooled, cooling temperature is no more than 198 ℃;
7) adopt japanning to adopt dip-coating wiping mode, control paint viscosity 25S; And adopt resistance-type heating segmentation baking japanning, and the first paragraph storing temperature is at 349 oC, and storing time is at 68S, and the second segment storing temperature is at 305 oC, and storing time is at 65 S;
8) wax, and adopt hot-air seasoning, drying temperature is controlled at 285～298 oC, and be 65S time of drying.
After testing, the tensile strength of japanning tie is 980Mpa, and unit elongation A is 10.0%, and alternating bending frequency 13 times (R=5mm) is without the brittle failure layering, and finish coatings is light evenly; Do butanone wiping experiment 35 times through painted surface, the antirust experiment of salt fog 9 hours finds no corrosion phenomena, reaches the requirement of industrial high-intensity packing steel belt.
Embodiment 4
A kind of high-strength japanning tie, its chemical ingredients and weight percent content are: C:0.2 %; Si:0.42 %, Mn:1.65%; P:0.019 %; S:0.017%, Nb:0.027%, surplus is Fe and inevitable impurity.
The preparation measured step is rapid:
1) is rolled into volume behind smelting and the strand;
2) hot rolled coil is carried out pickling, the pickle solution temperature is at 89～94 ℃, and the acid number in the pickle solution is 242 grams per liters, and pickling speed is 117 m/mins;
3) carry out cold rollingly, total reduction is 65%, and the steel plate tensile strength after the cold rolling end is at 1150Mpa, and unit elongation is 5.5%;
4) carry out uncoiling, itemize, deburring;
5) carry out temper in atmosphere is the plumbous bismuth stove of 80%Pb+20%Bi, temperature is at 460～470 ℃ in the plumbous bismuth stove, and steel belt operating speed is at 4.8m/min;
6) carry out water-cooled, cooling temperature is no more than 190 ℃;
7) adopt japanning to adopt dip-coating wiping mode, control paint viscosity 20S; And adopt resistance-type heating segmentation baking japanning, and the first paragraph storing temperature is at 325 oC, and storing time is at 70S, and the second segment storing temperature is at 285 oC, and storing time is at 60 S;
8) wax, and adopt hot-air seasoning, drying temperature is controlled at 195～205 oC, and be 70S time of drying.
After testing, the tensile strength of japanning tie is 996Mpa, and unit elongation A is 9.5%, and alternating bending frequency 11 times (R=5mm) is without the brittle failure layering, and finish coatings is light evenly; Do butanone wiping experiment 38 times through painted surface, the antirust experiment of salt fog 10 hours finds no corrosion phenomena, reaches the requirement of industrial high-intensity packing steel belt.
Embodiment 5
A kind of high-strength japanning tie, its chemical ingredients and weight percent content are: C:0.11 %; Si:0.53 %, Mn:1.70%; P:0.017 %; S:0.0195%, Nb:0.033%, surplus is Fe and inevitable impurity.
The preparation measured step is rapid:
1) is rolled into volume behind smelting and the strand;
2) hot rolled coil is carried out pickling, the pickle solution temperature is at 70～80 ℃, and the acid number in the pickle solution is 232 grams per liters, and pickling speed is 110 m/mins;
3) carry out cold rollingly, total reduction is 80%, and the steel plate tensile strength after the cold rolling end is at 1100Mpa, and unit elongation is 5.0%;
4) carry out uncoiling, itemize, deburring;
5) carry out temper in atmosphere is the plumbous bismuth stove of 80%Pb+20%Bi, temperature is at 470～480 ℃ in the plumbous bismuth stove, and steel belt operating speed is at 4.5m/min;
6) carry out water-cooled, cooling temperature is no more than 190 ℃;
7) adopt japanning to adopt dip-coating wiping mode, control paint viscosity 27S; And adopt resistance-type heating segmentation baking japanning, and the first paragraph storing temperature is at 300 oC, and storing time is at 75S, and the second segment storing temperature is at 260 oC, and storing time is at 63 S;
8) wax, and adopt hot-air seasoning, drying temperature is controlled at 220～230oC, and be 75S time of drying.
After testing, the tensile strength of japanning tie is 1000Mpa, and unit elongation A is 9.0%, and alternating bending frequency 11 times (R=5mm) is without the brittle failure layering, and finish coatings is light evenly; Do butanone wiping experiment 49 times through painted surface, the antirust experiment of salt fog 10 hours finds no corrosion phenomena, reaches the requirement of industrial high-intensity packing steel belt.
Above-described embodiment only exemplifies for the best, and is not to be restriction to embodiments of the present invention.
Claims (3)
1. high-strength japanning tie, its chemical ingredients and weight percent content are: C:0.12～0.20 %; Si:0.2～0.6 %, Mn:1.2～2.0%; P :≤0.025%; S :≤0.02%, Nb:0.01～0.05%, surplus are Fe and inevitable impurity.
2. the method for preparing a kind of high-strength japanning tie claimed in claim 1, its step:
1) is rolled into volume behind smelting and the strand;
2) hot rolled coil is carried out pickling, and control the pickle solution temperature at 65～95 ℃, pickling speed is no more than 120 m/mins;
3) carry out cold rolling, control total reduction 65～80%, the steel plate tensile strength after the cold rolling end is not less than 980Mpa, unit elongation is not less than 5%;
4) carry out uncoiling, itemize, deburring;
5) carry out temper in the plumbous bismuth stove that Pb and the 20～40%Bi of atmosphere ratio 60～80% form, control the interior temperature of plumbous bismuth stove at 400～500 ℃, steel belt operating speed is at 4～6 m/mins;
6) carry out water-cooled, cooling temperature is no more than 200 ℃;
7) adopt dip-coating wiping mode to paint, control paint viscosity 18～35S; And adopt resistance-type heating segmentation baking japanning, and control first paragraph heated baking temperature 280～350oC, storing time are at 50～75S, and control second segment slow cooling storing temperature is at 250-320oC, and storing time is at 50～75S;
8) wax, and adopt hot-air seasoning, drying temperature is controlled at 150～300 oC, and be 60～80 S time of drying.
3. a kind of method of high-strength japanning tie is weighed in preparation as claimed in claim 2, it is characterized in that: the acid number in the pickle solution is controlled at the 200-250 grams per liter.
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| CN201210559019.0A CN102978512B (en) | 2012-12-21 | 2012-12-21 | High-strength painted bundling belt and manufacturing method thereof |
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| CN201210559019.0A CN102978512B (en) | 2012-12-21 | 2012-12-21 | High-strength painted bundling belt and manufacturing method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103451524A (en) * | 2013-09-09 | 2013-12-18 | 武汉钢铁(集团)公司 | Lacquer-coated strapping steel having thickness of 0.5 mm and tensile strength of greater than or equal to 1000 MPa, 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 |
| CN103805845A (en) * | 2014-03-05 | 2014-05-21 | 武汉钢铁(集团)公司 | Production method of high-strength ultrathin painting binding band with thickness of 0.40mm |
| CN111621707A (en) * | 2020-06-28 | 2020-09-04 | 马鞍山钢铁股份有限公司 | Steel for high-ductility cold-rolled steel bar CRB680H and production process thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103451524A (en) * | 2013-09-09 | 2013-12-18 | 武汉钢铁(集团)公司 | Lacquer-coated strapping steel having thickness of 0.5 mm and tensile strength of greater than or equal to 1000 MPa, and production method thereof |
| CN103451524B (en) * | 2013-09-09 | 2015-07-29 | 武汉钢铁(集团)公司 | Thickness is tensile strength >=1000MPa japanning tie steel and the production method of 0.5mm |
| 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 |
| CN103805845A (en) * | 2014-03-05 | 2014-05-21 | 武汉钢铁(集团)公司 | Production method of high-strength ultrathin painting binding band with thickness of 0.40mm |
| 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 |
| CN111621707A (en) * | 2020-06-28 | 2020-09-04 | 马鞍山钢铁股份有限公司 | Steel for high-ductility cold-rolled steel bar CRB680H and production process thereof |
| CN111621707B (en) * | 2020-06-28 | 2022-02-08 | 马鞍山钢铁股份有限公司 | Steel for high-ductility cold-rolled steel bar CRB680H and production process thereof |
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| Publication number | Publication date |
|---|---|
| CN102978512B (en) | 2014-10-29 |
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