WO2017054427A1 - 连续变厚度带材的热镀锌层厚度控制系统及方法 - Google Patents
连续变厚度带材的热镀锌层厚度控制系统及方法 Download PDFInfo
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- WO2017054427A1 WO2017054427A1 PCT/CN2016/077617 CN2016077617W WO2017054427A1 WO 2017054427 A1 WO2017054427 A1 WO 2017054427A1 CN 2016077617 W CN2016077617 W CN 2016077617W WO 2017054427 A1 WO2017054427 A1 WO 2017054427A1
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/14—Removing excess of molten coatings; Controlling or regulating the coating thickness
- C23C2/16—Removing excess of molten coatings; Controlling or regulating the coating thickness using fluids under pressure, e.g. air knives
- C23C2/18—Removing excess of molten coatings from elongated material
- C23C2/20—Strips; Plates
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/003—Apparatus
- C23C2/0034—Details related to elements immersed in bath
- C23C2/00342—Moving elements, e.g. pumps or mixers
- C23C2/00344—Means for moving substrates, e.g. immersed rollers or immersed bearings
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/003—Apparatus
- C23C2/0038—Apparatus characterised by the pre-treatment chambers located immediately upstream of the bath or occurring locally before the dipping process
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/003—Apparatus
- C23C2/0038—Apparatus characterised by the pre-treatment chambers located immediately upstream of the bath or occurring locally before the dipping process
- C23C2/004—Snouts
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
- C23C2/06—Zinc or cadmium or alloys based thereon
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/14—Removing excess of molten coatings; Controlling or regulating the coating thickness
- C23C2/16—Removing excess of molten coatings; Controlling or regulating the coating thickness using fluids under pressure, e.g. air knives
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/34—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the shape of the material to be treated
- C23C2/36—Elongated material
- C23C2/40—Plates; Strips
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/50—Controlling or regulating the coating processes
- C23C2/51—Computer-controlled implementation
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/50—Controlling or regulating the coating processes
- C23C2/52—Controlling or regulating the coating processes with means for measuring or sensing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
- B32B15/013—Layered products comprising a layer of metal all layers being exclusively metallic one layer being formed of an iron alloy or steel, another layer being formed of a metal other than iron or aluminium
Definitions
- the present invention relates to a cold rolling system and method, and more particularly to a hot dip galvanized layer thickness control system and method for a continuously variable thickness strip.
- the corrosion resistance of the sheet is required. Therefore, some thickened sheets must be supplied in the form of galvanizing.
- Zinc plating has two methods of heat and plating. Hot-dip galvanizing has advantages over electro-galvanizing in terms of cost and environmental impact.
- the production process is: hot-dip galvanizing or hot-dip aluminizing of the hot-rolled strip, followed by continuous variable thickness rolling, and then cutting the sheet required by the user from the steel coil as required Cut it down.
- the method is as follows: after the unequal thickness rolling, the strip is electroplated, and then alloyed, and then submitted to the user for forming treatment.
- the method proposed in the patent US Pat. No. 8,522,586 B2 is to carry out hot-plating or electroplating of hot-rolled or cold-rolled incoming materials, followed by unequal-thick rolling and subsequent processing.
- the patent CN102712961 adopts hot rolling of the unequal thickness rolling, followed by recrystallization annealing, and then electroplating and alloying.
- the object of the present invention is to provide a hot-dip galvanized layer thickness control system and method for continuously variable thickness strip.
- the present invention adopts the following technical solutions:
- a hot-dip galvanizing layer thickness control system for continuously variable thickness strips comprising a strip thickness gauge, a length measuring roller, a hot-dip galvanizing device, an air knife, a cold zinc layer measuring instrument, and a control system.
- a strip thickness gauge and a length measuring roller are arranged in the forward direction of the strip steel in front of the inlet of the hot-dip galvanizing device, and an air knife and a cold zinc layer measuring instrument are sequentially disposed after the outlet of the hot-dip galvanizing device.
- the strip thickness gauge detects the thickness signal of the strip
- the length measuring roller detects the length signal of the strip
- the cold zinc layer gauge detects the thickness of the strip of the strip
- the strip thickness gauge, the length measuring roll and the cold zinc The layer meter sends the measurement data to the control system separately.
- the control system estimates the strip thickness at the air knife based on the length signal and the thickness signal, and adjusts the pressure of the air knife, and further adjusts the air knife pressure according to the thickness of the zinc layer.
- the hot-dip galvanizing device comprises a furnace nose, a zinc pot, a sinking roll, and a stabilizing roll.
- the zinc pot is the main body of the hot-dip galvanizing device
- the furnace nose is the inlet of the zinc pot
- the sinking roller is disposed inside the zinc pot
- the stabilizing roller is disposed at the outlet of the zinc pot.
- the air knife has a pitch of 9-15 mm and is positioned 300-600 mm higher than the hot-dip galvanizing device.
- control system compares the thickness of the zinc layer with the set value and performs a calculation to further adjust the air knife pressure.
- the annealing furnace is placed in the forward direction of the strip, before the strip thickness gauge and the length measuring roll.
- the present invention also adopts the following technical solutions:
- a method for controlling the thickness of a hot-dip galvanized layer of a continuously variable thickness strip comprising the steps of: setting a contour size of a thickened rolling target strip; and setting an air knife corresponding to two equal-thick sections according to the set contour size Pressure; measure the length and thickness of the strip before hot-dip galvanizing; adjust the air knife pressure according to the length and thickness of the strip before hot-dip galvanizing; measure the strip thickness and the thickness of the zinc layer after hot-dip galvanizing; The strip thickness and the thickness of the zinc layer are calculated corresponding to the thickness deviation values of the two equal thickness segments; the air knife pressure adjustment amount corresponding to the two equal thickness segments is calculated according to the thickness deviation value; and the air knife pressure is adjusted.
- the hot-dip galvanizing layer thickness control system and method for the continuous variable thickness strip of the present invention can make the thickness of the continuous thickness of the coiled material uniform, and the process is simple.
- Figure 1 is a schematic view of thickening and rolling
- Figure 2 is a schematic view of the outline of the inlet strip of the hot-dip galvanizing unit
- FIG. 3 is a schematic structural view of a thickness control system for a hot-dip galvanized layer of a continuously variable thickness strip according to the present invention
- FIG. 4 is a flow chart of a method for controlling thickness of a hot-dip galvanized layer of a continuous variable thickness strip according to the present invention
- Figure 5 is a schematic view of unequal thickness samples.
- Figure 2 shows the set continuous thickness outlet profile, which is also an indication of the thickness profile of the inlet strip of the hot dip galvanizing unit.
- the thickness of the zinc layer There are many factors affecting the thickness of the zinc layer, such as strip thickness, width, plate shape, surface roughness, strip temperature, zinc bath temperature and composition.
- strip thickness For continuous variable thickness strip 1, the thickness of the raw material inevitably changes periodically, while the temperature of the strip, the temperature of the zinc bath and the composition of the material are basically unchanged, so only the adjustment of the air knife 5 can control the thickness of the zinc layer. Therefore, the essence of the invention is to control the thickness of the zinc layer by adjusting the parameters of the air knife.
- the main air knife parameters of the present invention are air knife pressure, air knife 5 nozzle and strip 1 surface distance, strip 1 running speed, air knife 5 distance zinc pot 2 liquid level height, nozzle gap, blowing angle Wait.
- the lip gap in the air knife parameter is fixed when the air knife 5 is installed, and can be regarded as a constant, so that the main influence factors of the thickness of the zinc layer are only the knife pressure, the blowing angle, the cutting distance, the knife height and the strip speed.
- Variables, in which the strip speed, air knife pressure, air knife spacing and other variables have the most significant effect on the thickness of the zinc layer.
- the present invention first discloses a hot-dip galvanized layer thickness control system 10 for continuously variable thickness strips, the main structure of which includes a strip thickness gauge 8, a length measuring roller 11, a hot-dip galvanizing device, and an air knife. 5.
- the zinc pot 2 is the main body of the hot-dip galvanizing apparatus
- the furnace nose 9 is the inlet of the zinc pot 2
- the sinking roll 3 is provided inside the zinc pot 2
- the stabilizing roll 4 is provided in the exit of the zinc pot 2.
- the annealing furnace 6 is disposed in the advancing direction of the strip, before the strip thickness gauge 8 and the length measuring roller 11.
- the running speed of the strip 1 is determined by the process before and after the production line, and the speed is used as the disturbance amount in the zinc layer thickness control, and is not used as the adjustment amount.
- the tool distance is generally controlled between 9-15mm, and is not dynamically adjusted.
- the value of the tool height usually depends on the strip 1
- the running speed is generally higher than the zinc pot 2300-600mm.
- the angle of the nozzle is adjusted offline. Therefore, the control of the thickness of the zinc layer is actually achieved by adjusting the air knife pressure.
- a strip thickness gauge 8 and a length measuring roller 11 are disposed in front of the inlet of the hot-dip galvanizing apparatus along the advancing direction of the strip, and the air knife 5 and the cold zinc layer are sequentially disposed after the outlet of the hot-dip galvanizing apparatus.
- Instrument 7. The strip thickness gauge 8 detects the thickness signal of the strip 1, the length measuring roller 11 detects the length signal of the strip 1, the cold zinc layer measuring instrument 7 detects the thickness of the zinc layer of the strip 1, and the strip thickness gauge 8
- the length measuring roller 11 and the cold zinc layer measuring instrument 7 respectively transmit measurement data to the control system 10.
- the control system 10 first pre-sets the pressure of the air knife 5 for the strips 1 of different thickness according to the required thickness of the zinc layer, that is, first estimates the strip thickness at the air knife 5 according to the length signal and the thickness signal, and the air knife 5 Perform pressure adjustment. Specifically, after the strip 1 passes through the annealing furnace 6, it is sequentially passed through the strip thickness gauge 8 and the length measuring roller 11, and the measured thickness and length information is sent to the control system 10, and the control system 10 combines the thickness and length information. The thickness profile information of the strip 1 is obtained. At the same time, the control system 10 will track the strip 1 and calculate the thickness corresponding to the strip 1 at the air knife 5, and adjust it according to the preset pressure.
- the cold zinc layer measuring instrument 7 measures the thickness of the zinc layer of the strip and feeds it into the control system 10, and the control system 10 calculates the difference between the thickness of the galvanized layer of the strip 1 and the set thickness of the pre-set zinc layer.
- the deviation combined with the thickness information of the strip 1 at the measurement position obtained by the tracking calculation, further adjusts the preset air knife pressure.
- the present invention also discloses a method for controlling the thickness of a hot-dip galvanized layer of a continuous variable thickness strip, comprising the following steps:
- S6 Calculate the thickness deviation value corresponding to two equal thickness segments according to the strip thickness and the zinc layer thickness after hot-dip galvanizing.
- a thickened plate sample comprises two equal-thickness segments h1 and h2.
- a sample length and thickness value is set, and then rolling is performed periodically, so that galvanizing is performed.
- the strip thickness at the inlet of the unit changes periodically.
- S2 Set the air knife pressure corresponding to two equal thickness segments according to the set contour size meter.
- the strip size is first input into the control system 10, and the control system 10 calculates the air knife pressures p1, p2 corresponding to the two equal thickness segments according to the speed at which the strip runs and the thickness of the strip.
- the present invention includes a tracking module with input signals provided by length measuring rolls 11 and functions implemented in control system 10.
- the control system 10 adjusts the air knife pressure according to the air knife pressure preset value before the start of the galvanizing, and outputs the set value to the actuator.
- S3 Measure the length and thickness of the strip before hot dip galvanizing. At the time of galvanizing, the thickness gauge 8 and the length measuring roller 11 feed the position and thickness of the measuring strip 1 into the control system 10.
- S4 Adjust the air knife pressure according to the length and thickness of the strip before hot-dip galvanizing. Control system 10 combines them. The distance between the length measuring roller 11 and the air knife 5 is constant, so the tracking function of the control system 10 can calculate the thickness of the strip at the air knife 5 according to the running speed of the strip and adjust the air knife pressure.
- a cold zinc layer gauge 7 is arranged, the coating thickness of the strip 1 will be measured and the measured value will be sent to the control system 10.
- the tracking function of the control system will calculate the thickness of the strip located in the cold zinc layer gauge 7.
- S6 Calculate the thickness deviation value corresponding to two equal thickness segments according to the strip thickness and the zinc layer thickness after hot-dip galvanizing.
- the control system combines the strip thickness value of the cold zinc layer measuring instrument 7 with the coating thickness value to obtain the plating thickness deviation values ⁇ ch1 and ⁇ ch2 corresponding to the two equal thickness sections.
- control system will calculate the air knife pressure adjustment amounts ⁇ p1, ⁇ p2 corresponding to the two equal thickness segments. This is actually a feedback control process.
- control system 10 will output the air knife pressure value p1 + ⁇ p1 or p2 + ⁇ p2 to the actuator according to the thickness of the strip at the air knife 5.
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Abstract
Description
Claims (6)
- 一种连续变厚度带材的热镀锌层厚度控制系统,其特征在于,包括:带钢测厚仪、测长辊、热镀锌装置、气刀、冷态锌层测量仪、控制系统;沿带钢前进方向、位于热镀锌装置的入口前设置所述带钢测厚仪和测长辊,热镀锌装置的出口之后依次设置所述气刀和冷态锌层测量仪;所述带钢测厚仪检测带钢的厚度信号,所述测长辊检测带钢的长度信号,所述冷态锌层测量仪检测带钢的锌层厚度,并且带钢测厚仪、测长辊和冷态锌层测量仪分别将测量数据发送至所述控制系统;所述控制系统根据所述长度信号和厚度信号预估气刀处的带钢厚度,并对气刀进行压力调整,并根据所述锌层厚度对气刀压力进行进一步调整。
- 如权利要求1所述的连续变厚度带材的热镀锌层厚度控制系统,其特征在于,所述热镀锌装置包括炉鼻子、锌锅、沉没辊、稳定辊;所述锌锅为热镀锌装置的主体,所述炉鼻子为所述锌锅的入口,所述沉没辊设置于锌锅内部,所述稳定辊设置于锌锅的出口处。
- 如权利要求1所述的连续变厚度带材的热镀锌层厚度控制系统,其特征在于,所述气刀的间距为9ˉ15mm,其位置高于热镀锌装置300ˉ600mm。
- 如权利要求1所述的连续变厚度带材的热镀锌层厚度控制系统,其特征在于,所述控制系统将锌层厚度与设定值比较并进行计算,从而对气刀压力进行进一步调整。
- 如权利要求1所述的连续变厚度带材的热镀锌层厚度控制系统,其特征在于,沿带钢前进方向、位于带钢测厚仪和测长辊之前设置退火炉。
- 一种连续变厚度带材的热镀锌层厚度控制方法,其特征在于,包括以下步骤:设定变厚轧制目标带钢的轮廓尺寸;根据设定的轮廓尺寸设定对应两个等厚段的气刀压力;测量热镀锌之前带钢的长度和厚度;根据热镀锌之前带钢的长度和厚度调整气刀压力;测量热镀锌之后的带钢厚度和锌层厚度;根据热镀锌之后的带钢厚度和锌层厚度计算对应两个等厚段的厚度偏差值;根据厚度偏差值计算对应两个等厚段的气刀压力调整量;调整气刀压力。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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EP16850054.4A EP3358036B1 (en) | 2015-09-30 | 2016-03-29 | Hot-dip galvanized layer thickness control system and method for continuous thickness-varying strip material |
KR1020187011789A KR102099910B1 (ko) | 2015-09-30 | 2016-03-29 | 연속적인 두께-가변형 스트립 물질을 위한 용융 아연도금 층 두께 조절 시스템 및 방법 |
US15/763,275 US10415131B2 (en) | 2015-09-30 | 2016-03-29 | Hot-dip galvanized layer thickness control system and method for continuous thickness-varying strip material |
ES16850054T ES2877718T3 (es) | 2015-09-30 | 2016-03-29 | Sistema y método de control de grosor de capa galvanizada por inmersión en caliente para material de banda de grosor variable continuo |
JP2018516679A JP6778258B2 (ja) | 2015-09-30 | 2016-03-29 | 厚さが連続的に変化するストリップ材料のための溶融亜鉛めっき層厚さ制御システムおよび方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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CN201510641092.6 | 2015-09-30 | ||
CN201510641092.6A CN106555144B (zh) | 2015-09-30 | 2015-09-30 | 连续变厚度带材的热镀锌层厚度控制系统及方法 |
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WO2017054427A1 true WO2017054427A1 (zh) | 2017-04-06 |
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PCT/CN2016/077617 WO2017054427A1 (zh) | 2015-09-30 | 2016-03-29 | 连续变厚度带材的热镀锌层厚度控制系统及方法 |
Country Status (7)
Country | Link |
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US (1) | US10415131B2 (zh) |
EP (1) | EP3358036B1 (zh) |
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KR20180061275A (ko) | 2018-06-07 |
JP6778258B2 (ja) | 2020-10-28 |
ES2877718T3 (es) | 2021-11-17 |
CN106555144A (zh) | 2017-04-05 |
EP3358036B1 (en) | 2021-04-21 |
KR102099910B1 (ko) | 2020-04-13 |
US20180282850A1 (en) | 2018-10-04 |
EP3358036A4 (en) | 2019-03-06 |
EP3358036A1 (en) | 2018-08-08 |
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US10415131B2 (en) | 2019-09-17 |
JP2018529845A (ja) | 2018-10-11 |
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