CN106513439A - Manufacturing method for hot-rolled high-carbon steel sheet strip with single-face decarburized layer ratio smaller than 0.7% - Google Patents
Manufacturing method for hot-rolled high-carbon steel sheet strip with single-face decarburized layer ratio smaller than 0.7% Download PDFInfo
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- CN106513439A CN106513439A CN201610885124.1A CN201610885124A CN106513439A CN 106513439 A CN106513439 A CN 106513439A CN 201610885124 A CN201610885124 A CN 201610885124A CN 106513439 A CN106513439 A CN 106513439A
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- 229910000677 High-carbon steel Inorganic materials 0.000 title claims abstract description 38
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 22
- 238000002791 soaking Methods 0.000 claims abstract description 33
- 238000001816 cooling Methods 0.000 claims abstract description 29
- 238000010438 heat treatment Methods 0.000 claims abstract description 25
- 238000009749 continuous casting Methods 0.000 claims abstract description 24
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 20
- 239000010959 steel Substances 0.000 claims abstract description 20
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 19
- 239000001301 oxygen Substances 0.000 claims abstract description 19
- 230000006835 compression Effects 0.000 claims abstract description 6
- 238000007906 compression Methods 0.000 claims abstract description 6
- 238000010079 rubber tapping Methods 0.000 claims abstract description 3
- 238000005096 rolling process Methods 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 21
- 238000005266 casting Methods 0.000 claims description 14
- 238000007599 discharging Methods 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 7
- 238000003723 Smelting Methods 0.000 claims description 3
- 238000007670 refining Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000005261 decarburization Methods 0.000 description 20
- 239000000047 product Substances 0.000 description 12
- 229910052799 carbon Inorganic materials 0.000 description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 8
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 230000006872 improvement Effects 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 230000009467 reduction Effects 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 238000005262 decarbonization Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000011253 protective coating Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/46—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting
- B21B1/463—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting in a continuous process, i.e. the cast not being cut before rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
- B21B45/0203—Cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/001—Continuous casting of metals, i.e. casting in indefinite lengths of specific alloys
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
- Heat Treatment Of Sheet Steel (AREA)
Abstract
The invention discloses a manufacturing method for a hot-rolled high-carbon steel sheet strip with the single-face decarburized layer ratio smaller than 0.7%. After continuous casting of a steel billet, the thickness H of the continuous-cast billet is controlled to be 55-90 mm, the thickness h of finish-rolled strip steel is 1.5-6.0 mm, and the compression ratio H/h of the finish-rolled strip steel is larger than or equal to 15. The temperature of the continuous-casting billet before entering a soaking pit is 850-950 DEG C, the tapping temperature is 1100-1150 DEG C, and the inside-furnace time is 18-30 min. The air excess coefficient of a heating section of the soaking pit is 1.26-1.30, the air excess coefficient of a soaking section is 1.30-1.35, the air excess coefficient of a public section is 1.40-1.45, and remaining oxygen quantity in the soaking pit is 1.5-4.0%. The cooling rate of laminar cooling is 10-20 DEG C/s, and thus the single-face decarburized layer ratio of the hot-rolled high-carbon steel sheet strip is smaller than 0.7%. The manufacturing method is simple and low in cost, and the quality of the hot-rolled high-carbon steel sheet strip can be improved.
Description
Technical Field
The invention belongs to the technical field of high-carbon steel plate strip manufacturing, and particularly relates to a manufacturing method of a hot-rolled high-carbon steel plate strip with a single-sided decarburized layer ratio of less than 0.7%.
Background
The high-carbon steel product has high carbon content (more than 0.6 percent), high hardness, good wear resistance, red hardness, good hardenability and the like, and is mainly used in the fields of high-end saw blades, automobiles, hardware and the like. The serious surface decarburization is one of the outstanding quality problems in the manufacturing process of high-carbon steel, and the higher the carbon content is, the more obvious the surface decarburization is, which will cause adverse effects on the service properties of the high-carbon steel, such as surface hardness, wear resistance and fatigue resistance. At present, the single-sided decarburized layer ratio (the single-sided decarburized layer depth/the strip steel thickness) of a high-quality high-carbon steel plate strip is required to be less than 0.8%, but the decarburized layer ratio of the high-carbon steel surface in the prior art is generally 0.8-1.5%.
The high-carbon steel plate strip mainly comprises two production process flows of traditional hot continuous rolling and thin slab continuous casting and continuous rolling. The decarbonization problem of high-carbon steel produced by the traditional hot continuous rolling is particularly outstanding, and the proportion of single-side decarburized layers reaches more than 1.2 percent. The improvement method mainly comprises two methods: the first improvement method is that after the casting blank is cooled off line, the surface of the casting blank is sprayed with the anti-decarbonization coating, and then the high-carbon steel blank is heated. For example, Chinese patent 201310417239.4 proposes a processing method for preventing decarburization of a high-carbon steel billet, which comprises the steps of coating a protective coating on the surface of a continuously rolled billet by using a brushing, rolling or spraying process, wherein the thickness of the coating is 0.6-0.8 mm, and then heating and rolling, so that decarburization can be effectively reduced. In addition, patent publication Nos. CN1127789, CN1510089 and CN102312065A disclose a coating for preventing the decarburization of a steel material by heating, which is effective for reducing the thickness of a decarburized layer. The first improvement method needs to clean the surface of the casting blank, spray coating on the surface of the casting blank and finally heat the casting blank for the second time, so that the production cost is high and the production efficiency is low. The second improvement method is to improve the decarburization depth of the cast slab by controlling the heating condition. For example, chinese patent 201510937456.5 proposes a heating method for reducing the decarburized layer of a heavy rail, which controls the decarburized layer depth of a cast slab by controlling the heating temperature, residence time and air-fuel ratio of each heating zone in a heating furnace. Patent publication No. CN1438334A discloses a heating method for preventing decarburization of a high carbon steel slab or ingot, which heats the slab or ingot with a strong oxidizing atmosphere to inhibit decarburization by forming a thick oxide layer on the surface, which causes a large amount of scale to be generated on the surface of the slab, causes severe burning loss, reduces the yield, and is liable to form surface defects during rolling of the steel sheet. Patent CN101195853A discloses a heating method for preventing decarburization of a high carbon strip billet, which adopts a weak oxidizing atmosphere to shorten the heating time by means of rapid heating, thereby reducing surface decarburization of the billet. The second improvement method has the disadvantages of thick steel billet, low furnace entering temperature, high heating speed and short furnace time, so that the steel billet cannot be uniformly and completely burnt, the rolling process is unstable and the product quality is not high. Compared with the traditional hot continuous rolling process, the thin slab continuous casting and rolling process is adopted to produce high-carbon steel, the surface decarburization problem can be improved to a certain extent by utilizing the characteristic of short-time low-temperature heating of the process, the proportion of a single-side decarburized layer can be controlled to be about 1.0 percent, and the product quality requirement of high-quality high-carbon steel can not be completely met.
Disclosure of Invention
The invention aims to provide a method for manufacturing a hot-rolled high-carbon steel plate strip with a single-side decarburized layer ratio of less than 0.7%, which can control the single-side decarburized layer ratio of the hot-rolled high-carbon steel plate strip to be less than 0.7%, solve the problem of serious surface decarburization in the production of high-carbon steel products in the prior art and improve the product quality.
The technical scheme adopted by the invention is as follows:
a method for manufacturing a hot-rolled high-carbon steel plate strip with a single-side decarburized layer ratio of less than 0.7 percent mainly comprises the following manufacturing processes: smelting → refining → thin slab continuous casting → casting blank soaking → high pressure water descaling → finish rolling → laminar cooling → coiling; wherein,
the thickness H of a continuous casting blank after the continuous casting of the sheet billet is 55-90mm, the thickness H of the strip steel after the finish rolling is 1.5-6.0mm, and the compression ratio H/H of the strip steel after the finish rolling is more than or equal to 15;
the temperature of the continuous casting billet before entering the soaking furnace is 850-950 ℃, the discharging temperature is 1100-1150 ℃, and the furnace time is 18-30 min;
the air surplus coefficient of the heating section of the soaking pit furnace is 1.26-1.30, the air surplus coefficient of the soaking pit furnace is 1.30-1.35, the air surplus coefficient of the public section is 1.40-1.45, and the residual oxygen amount in the soaking pit furnace is 1.5-4.0% through dynamic adjustment;
the laminar cooling adopts a front-section rapid cooling process, and the cooling rate is 10-20 ℃/s.
The further proposal is that the thickness H of the continuous casting billet after the continuous casting of the sheet billet is 60-70mm, the thickness H of the strip steel after the finish rolling is 1.5-2.5mm, and the compression ratio H/H of the strip steel after the finish rolling is more than or equal to 24;
the temperature of the continuous casting billet before entering the soaking furnace is 900-950 ℃, the tapping temperature is 1120-1150 ℃, and the in-furnace time is 20-25 min;
the air surplus coefficient of the heating section of the soaking pit furnace is 1.28-1.30, the air surplus coefficient of the soaking pit furnace is 1.32-1.33, the air surplus coefficient of the public section is 1.42-1.44, and the residual oxygen amount in the soaking pit furnace is determined to be 2.5-3.8% through dynamic adjustment;
the cooling rate of the laminar cooling process is 15-18 ℃/s.
The invention has the beneficial effects that:
(1) the whole manufacturing process does not need to add new equipment and materials for spraying the anti-decarburization coating, has strong operability and obviously reduces the manufacturing cost;
(2) the thickness of the casting blank is only 55-90mm, the charging temperature of the casting blank reaches above 800 ℃, the discharging temperature is only 1100-1150 ℃, the target heating temperature can be reached and the temperature homogenization can be realized only by short-time low-temperature heat supplement, and the surface decarburization phenomenon of the casting blank in the heating process is greatly reduced;
(3) the residual oxygen amount in the furnace and the surface decarburization depth of the casting blank do not show a pure linear relationship, and when the residual oxygen amount is less than 4.0%, the decarburization depth and the residual oxygen amount show a direct proportion relationship; when the residual oxygen amount is 4.0-5.0%, the depth of the decarburization layer reaches the peak value; when the residual oxygen content is more than 5.0 percent, the depth of the decarburization layer is in a descending trend; in addition, the relation between the residual oxygen and the iron scale on the surface of the casting blank is comprehensively considered; when the residual oxygen content is less than 1.5%, the iron oxide skin layer on the surface of the casting blank is thin, the viscosity is high, and the difficulty of descaling is obviously increased; when the residual oxygen content is more than 5.0%, the surface burning loss is large, and the yield is reduced; therefore, the residual oxygen content is controlled within the range of 1.5-4.0%, the proportion of single-sided decarburized layers can be reduced to the maximum extent, and the product quality is improved;
(4) the depth of the high-carbon surface decarburization layer can be further reduced by adopting a laminar cooling method of controlling a compression ratio and a front-stage rapid cooling process;
(5) the proportion of the single-side decarburized layer of the high-carbon steel plate strip can be controlled within the range of less than 0.7 percent.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a decarburized structure of high carbon steel 65Mn in example 1;
FIG. 2 is a decarburized structure of 75Cr1 high carbon steel in example 2;
FIG. 3 is a decarburized structure morphology of high carbon steel SK85 in example 3;
FIG. 4 is a decarburized structure morphology of high carbon steel 9SiCr in example 4;
FIG. 5 shows the decarburized structure morphology of high-carbon steel SK95 in example 5.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
A method for manufacturing a hot-rolled high-carbon steel plate strip with a single-side decarburized layer ratio of less than 0.7 percent mainly comprises the following manufacturing processes: smelting → refining → continuous casting of sheet billet → soaking of casting blank → high-pressure water descaling → finish rolling → laminar cooling → coiling.
Example 1 as shown in fig. 1, the high carbon steel produced in this example was 65Mn, whose chemical composition is shown in table 1, in which the carbon content was 0.65%, the ingot thickness was 60mm, the finished strip thickness (the thickness of the finish-rolled strip) was 4.0mm, and the reduction ratio of the finish-rolled strip was 15. The charging temperature of the continuous casting billet is 850 ℃, the discharging temperature is 1100 ℃, the charging time is 20min, the air surplus coefficient of a heating section in the soaking pit is 1.26, the soaking section is 1.30, the public section is 1.40, the residual oxygen in the pit is 1.5%, the front section is adopted for laminar cooling, and the cooling speed is about 18 ℃/s. The single-sided decarburized layer ratio of the product is shown in Table 2, for example.
Example 2 as shown in fig. 2, the high carbon steel produced in this example was 75Cr1, which had a carbon content of 0.75%, a billet thickness of 90mm, a finished strip thickness (strip thickness after finish rolling) of 6.0mm, and a reduction ratio of 15 after finish rolling, as shown in table 1. The charging temperature of the continuous casting billet is 920 ℃, the discharging temperature is 1140 ℃, the charging time is 23min, the air surplus coefficient of a heating section in the soaking pit is 1.30, the soaking section is 1.35, the public section is 1.45, the residual oxygen in the pit is 3.8 percent, the front section is adopted for laminar cooling, and the cooling speed is about 10 ℃/s. The single-sided decarburized layer ratio of the product is shown in Table 2, for example.
Example 3 as shown in fig. 3, the high carbon steel produced in this example was SK85, which had a chemical composition as shown in table 1, wherein the carbon content was 0.85%, the ingot thickness was 90mm, the finished strip thickness was 5.0mm, and the reduction ratio of the finish rolled strip was 18. The charging temperature of the continuous casting billet is 900 ℃, the discharging temperature is 1140 ℃, the charging time is 25min, the air surplus coefficient of a heating section in the soaking pit is 1.26, the soaking section is 1.32, the public section is 1.40, the residual oxygen in the pit is 1.6 percent, the front section rapid cooling is adopted in laminar cooling, and the cooling speed is about 15 ℃/s. The single-sided decarburized layer ratio of the product is shown in Table 2, for example.
Example 4 as shown in fig. 4, the high carbon steel produced in this example was 9SiCr, whose chemical composition is shown in table 1, in which the carbon content was 0.90%, the ingot thickness was 55mm, the finished strip thickness (the thickness of the finish-rolled strip) was 1.5mm, and the reduction ratio of the finish-rolled strip was 36. The charging temperature of the continuous casting billet is 950 ℃, the discharging temperature is 1150 ℃, the charging time is 30min, the air surplus coefficient of a heating section in the soaking pit is 1.28, the soaking section is 1.32, the public section is 1.42, the residual oxygen in the pit is 2.5 percent, the front section is adopted for laminar cooling, and the cooling speed is about 20 ℃/s. The single-sided decarburized layer ratio of the product is shown in Table 2, for example.
Example 5 As shown in FIG. 5, the high carbon steel produced in this example was SK95, and its chemical composition is shown in Table 1, in which the carbon content was 0.95%, the ingot thickness was 70mm, the finished strip thickness (the thickness of the finish rolled strip) was 3.0mm, and the reduction ratio of the finish rolled strip was 23.3. The charging temperature of the continuous casting billet is 950 ℃, the discharging temperature is 1150 ℃, the charging time is 30min, the air surplus coefficient of the heating section in the soaking pit is 1.30, the soaking section is 1.33, the public section is 1.44, the residual oxygen in the pit is 3.0 percent, the front section is adopted for laminar cooling, and the cooling speed is about 18 ℃/s. The single-sided decarburized layer ratio of the product is shown in Table 2, for example.
TABLE 1 examples relating to the chemical composition of steel grades
| Examples | Steel grade brand | C | Si | Mn | Cr |
| 1 | 65Mn | 0.65 | 0.21 | 1.0 | ≤0.20 |
| 2 | 75Cr1 | 0.75 | 0.23 | 0.70 | 0.40 |
| 3 | SK85 | 0.85 | 0.19 | 0.25 | 0.20 |
| 4 | 9SiCr | 0.90 | 1.20 | 0.40 | 1.0 |
| 5 | SK95 | 0.95 | 0.20 | 0.30 | / |
TABLE 2 examples relating to surface decarburization of steel grades
The invention has realized the online trial production of high-carbon steel of 65Mn, 75Cr1, SK85, 9SiCr, SK95 and other series at present, and the proportion of the surface decarburized layer of the product can be controlled below 0.7%. The annual yield is 10000 tons, and the ton steel benefit is 500 yuan, and the annual benefit is 500 ten thousand yuan.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.
Claims (2)
1. A method for manufacturing a hot-rolled high-carbon steel plate strip with a single-side decarburized layer ratio of less than 0.7 percent mainly comprises the following manufacturing processes: smelting → refining → thin slab continuous casting → casting blank soaking → high pressure water descaling → finish rolling → laminar cooling → coiling, which is characterized in that:
the thickness H of a continuous casting blank after the continuous casting of the sheet billet is 55-90mm, the thickness H of the strip steel after the finish rolling is 1.5-6.0mm, and the compression ratio H/H of the strip steel after the finish rolling is more than or equal to 15;
the temperature of the continuous casting billet before entering the soaking furnace is 850-950 ℃, the discharging temperature is 1100-1150 ℃, and the furnace time is 18-30 min;
the air surplus coefficient of the heating section of the soaking pit furnace is 1.26-1.30, the air surplus coefficient of the soaking pit furnace is 1.30-1.35, the air surplus coefficient of the public section is 1.40-1.45, and the residual oxygen amount in the soaking pit furnace is 1.5-4.0%;
the laminar cooling adopts a front-section rapid cooling process, and the cooling rate is 10-20 ℃/s.
2. The method for manufacturing a hot-rolled high-carbon steel sheet strip with a single-sided decarburized layer ratio of less than 0.7% according to claim 1, wherein:
the thickness H of a continuous casting blank after the continuous casting of the sheet billet is 60-70mm, the thickness H of the strip steel after the finish rolling is 1.5-2.5mm, and the compression ratio H/H of the strip steel after the finish rolling is more than or equal to 24;
the temperature of the continuous casting billet before entering the soaking furnace is 900-950 ℃, the tapping temperature is 1120-1150 ℃, and the in-furnace time is 20-25 min;
the air surplus coefficient of the heating section of the soaking pit furnace is 1.28-1.30, the air surplus coefficient of the soaking pit furnace is 1.32-1.33, the air surplus coefficient of the public section is 1.42-1.44, and the residual oxygen amount in the soaking pit furnace is determined to be 2.5-3.8% through dynamic adjustment;
the laminar cooling adopts a front-section rapid cooling process, and the cooling rate is 15-18 ℃/s.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109174976A (en) * | 2018-08-28 | 2019-01-11 | 武汉钢铁有限公司 | A kind of milling method reducing medium high carbon Strip practical decarburized depth |
| CN109604351A (en) * | 2018-10-24 | 2019-04-12 | 河钢股份有限公司 | A kind of technique reducing spring steel skin decarburization depth |
| CN116479310A (en) * | 2023-05-05 | 2023-07-25 | 江苏省沙钢钢铁研究院有限公司 | Production method of high-carbon steel hot-rolled coil with low edge crack defect and high-carbon steel hot-rolled coil |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101195853A (en) * | 2007-12-19 | 2008-06-11 | 莱芜钢铁集团有限公司 | Heating method for preventing high carbon belt steel bloom decarburization |
| CN102268518A (en) * | 2011-07-25 | 2011-12-07 | 武汉钢铁(集团)公司 | Test method for heating and decarburization of continuous casting blank of high carbon steel |
| KR20120074804A (en) * | 2010-12-28 | 2012-07-06 | 주식회사 포스코 | Method for manufacturing hot rolled steel sheet including high carbon contents using minimill process |
| CN102876983A (en) * | 2012-09-29 | 2013-01-16 | 攀钢集团成都钢钒有限公司 | Production process for 82B wire rod used for high strength prestressed steel wire and wire rod thereof |
| CN103451396A (en) * | 2013-09-13 | 2013-12-18 | 湖州市银鑫轧辊有限公司 | Processing method for preventing decarbonization of high-carbon steel billet |
| CN103506380A (en) * | 2012-06-20 | 2014-01-15 | 鞍钢股份有限公司 | Production method for reducing thickness of high-carbon spring strip steel decarburized layer |
| CN104141039A (en) * | 2014-06-27 | 2014-11-12 | 河北工程大学 | Rolling technology for controlling decarbonization of 42CrMo steel bloom hot-rolled wire rod |
| CN104233073A (en) * | 2013-06-19 | 2014-12-24 | 鞍钢股份有限公司 | Steel rail with surface decarburized layer smaller than 0.3mm and manufacturing method thereof |
| CN104878177A (en) * | 2015-05-07 | 2015-09-02 | 河北钢铁股份有限公司邯郸分公司 | Rolling technique capable of lowering depeth of steel rail decarburized layer |
| CN105132657A (en) * | 2015-09-29 | 2015-12-09 | 邢台钢铁有限责任公司 | Method for decreasing decarburized layers on surfaces of high-carbon-chromium bearing steel wires |
| US20160108494A1 (en) * | 2014-10-15 | 2016-04-21 | Sms Siemag Ag | Process for producing grain-oriented electrical steel strip and grain-oriented electrical steel strip obtained according to said process |
-
2016
- 2016-10-10 CN CN201610885124.1A patent/CN106513439B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101195853A (en) * | 2007-12-19 | 2008-06-11 | 莱芜钢铁集团有限公司 | Heating method for preventing high carbon belt steel bloom decarburization |
| KR20120074804A (en) * | 2010-12-28 | 2012-07-06 | 주식회사 포스코 | Method for manufacturing hot rolled steel sheet including high carbon contents using minimill process |
| CN102268518A (en) * | 2011-07-25 | 2011-12-07 | 武汉钢铁(集团)公司 | Test method for heating and decarburization of continuous casting blank of high carbon steel |
| CN103506380A (en) * | 2012-06-20 | 2014-01-15 | 鞍钢股份有限公司 | Production method for reducing thickness of high-carbon spring strip steel decarburized layer |
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| CN109174976A (en) * | 2018-08-28 | 2019-01-11 | 武汉钢铁有限公司 | A kind of milling method reducing medium high carbon Strip practical decarburized depth |
| CN109604351A (en) * | 2018-10-24 | 2019-04-12 | 河钢股份有限公司 | A kind of technique reducing spring steel skin decarburization depth |
| CN116479310A (en) * | 2023-05-05 | 2023-07-25 | 江苏省沙钢钢铁研究院有限公司 | Production method of high-carbon steel hot-rolled coil with low edge crack defect and high-carbon steel hot-rolled coil |
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