WO2017152593A1 - 一种短流程高性能无氧铜带的生产方法 - Google Patents

一种短流程高性能无氧铜带的生产方法 Download PDF

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Publication number
WO2017152593A1
WO2017152593A1 PCT/CN2016/097147 CN2016097147W WO2017152593A1 WO 2017152593 A1 WO2017152593 A1 WO 2017152593A1 CN 2016097147 W CN2016097147 W CN 2016097147W WO 2017152593 A1 WO2017152593 A1 WO 2017152593A1
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Prior art keywords
roll gap
oxygen
force
free copper
speed
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PCT/CN2016/097147
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English (en)
French (fr)
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张洪岩
张达
张利旭
王英华
张晓婷
李晔
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中天合金技术有限公司
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Publication of WO2017152593A1 publication Critical patent/WO2017152593A1/zh

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    • 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
    • B21B1/22—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 plates, strips, bands or sheets of indefinite length
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/08—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of copper or alloys based thereon

Definitions

  • the invention relates to a method for producing a copper strip, in particular to a method for producing a short-flow high-performance oxygen-free copper strip.
  • Copper and copper alloy strip is an important product in copper processing. It is an indispensable metal material in national economic construction. It has excellent electrical conductivity, thermal conductivity, corrosion resistance, electrical connection, electrical contact, elasticity, etc., and is widely used.
  • Various industrial fields, such as machinery, electronics, automobiles, electricity, communications, transportation, etc. In 2014, there were more than 300 copper strip production enterprises in China, with a production capacity of 2.5 million tons, an import volume of 358,200 tons, and an export volume of 189,500 tons. This data is still showing an upward trend every year. China's general products have already appeared excessive, high-end products. Still relying on imports, China's copper strip processing level generally lags behind developed countries and cannot meet the requirements of fast-developing industries.
  • the object of the present invention is to provide a short-flow high-performance oxygen-free copper strip production method, which shortens the processing flow and improves the production efficiency by optimizing the process flow and optimizing the processing pass of the rough rolling and finishing rolling processes.
  • the processing time is reduced, and the performance of the product is improved by optimizing the annealing temperature, the holding time, and the shielding gas flow rate.
  • the technical solution of the invention is: a method for producing a short-flow high-performance oxygen-free copper strip, which comprises the following steps:
  • Electrolytic copper is added into the melting furnace for melting, the melting temperature is controlled at 1150-1200 °C, and 100-150 mm thick charcoal is added as a covering agent to the melting furnace to form electrolytic copper in the melting furnace.
  • the copper liquid flows into the cavity of the holding furnace to control the temperature of the holding furnace to be 1180-1250 °C, and the graphite scale is used as a covering agent in the holding furnace.
  • the copper liquid flows into the graphite mold in the crystallizer to form a copper blank, and
  • the spindle machine continuously pulls through the cycle of pulling, stopping, reverse pushing and stopping, controlling the speed of the spindle machine to be 100-150mm/min, the cooling water temperature in the crystallizer is 20-25°C, and the cooling water pressure is 1.0-1.2.
  • Mpa stone
  • the ink mold size is 450*17mm;
  • Double-sided milling face milling surface the double-sided milling and milling operation of the oxygen-free copper strip produced in the above step a is performed to remove the surface oxide layer, specifically milling the upper and lower sides of the oxygen-free copper strip by 0.3-0.6 mm, Milling speed of 3m / min, to achieve a smooth surface, no defect standards;
  • Reversible rough rolling of copper strip the oxygen-free copper strip blank after step b is passed through a copper strip reversible roughing mill through 10 passes of rough rolling, and the copper strip is processed into a semi-finished product having a thickness of 0.55 mm, wherein each rolling
  • the main parameters of the system are:
  • the first pass inlet roll gap 17.0mm, outlet roll gap 13.0mm, processing rate 23.53%, speed 60m/min, rolling force 260t, front tension 83KN, back tension 80KN, bending roll force 15t;
  • the second pass inlet roll gap 13.0mm, outlet roll gap 9.5mm, processing rate 26.92%, speed 100m/min, rolling force 360t, front tension 83KN, back tension 80KN, bending roll force 15t;
  • the third pass 9.5mm entrance roll gap, 6.8mm outlet roll gap, processing rate 28.42%, speed 150m/min, rolling force 340t, front tension 75KN, back tension 80KN, bending roll force 15t;
  • the fifth pass inlet roll gap 4.7mm, outlet roll gap 3.2mm, processing rate 31.91%, speed 150m/min, rolling force 310t, front tension 50KN, back tension 68KN, bending roll force 25t;
  • the sixth pass 3.2mm entrance roll gap, 2.3mm outlet roll gap, processing rate 28.13%, speed 200m/min, rolling force 260t, front tension 50KN, rear tension 45KN, bending roll force 25t;
  • Seventh pass entrance roll gap 2.3mm, exit roll gap 1.6mm, processing rate 30.43%, speed 250m/min, rolling force 220t, front tension 40KN, rear tension 45KN, bending roll force 28t;
  • the eighth pass inlet roll gap 1.6mm, exit roll gap 1.1mm, processing rate 31.25%, speed 280m/min, rolling force 220t, front tension 40KN, back tension 35KN, bending roll force 27t;
  • the tenth pass inlet roll gap 0.75mm, exit roll gap 0.55mm, processing rate 26.67%, speed 300m/min, rolling force 170t, front tension 28N, back tension 33KN, bending roll force 28t;
  • One-time annealing of bell-type bright annealing furnace the oxygen-free copper coil after trimming in step d is placed in a bell-type bright annealing furnace for annealing treatment under protective gas, wherein the protective gas has a purity of 99.95. % nitrogen, gas flow rate is 3m 3 /h, annealing temperature is controlled to 350 ° C, heating time is controlled to 3h, holding time is controlled to 6h, control furnace temperature is less than 90 ° C;
  • step f thick belt degreasing cleaning line surface cleaning: the oxygen-free copper coil after the initial annealing in step e is subjected to surface cleaning by a thick strip degreasing cleaning line to remove residual water trace lubricating residue remaining on the surface of the oxygen-free copper strip after annealing, so that no The surface of the oxygen copper strip is smooth and has no surface defects;
  • the first pass inlet roll gap 0.55mm, outlet roll gap 0.28mm, processing rate 49.09%, speed 180m/min, rolling force 72t, front tension 13KN, back tension 13.6KN, bending roll force 0-3t;
  • the second pass inlet roll gap 0.28mm, outlet roll gap 0.17mm, processing rate 39.28%, speed 360m/min, rolling force 75t, front tension 8KN, rear tension 8.6KN, bending roll force -2t-3t;
  • the third pass 0.17mm entrance roll gap, 0.10mm outlet roll gap, processing rate 42.35%, speed 360m/min, rolling force 75t, front tension 4KN, rear tension 4.3KN, bending roll force -3-2t;
  • the oxygen-free copper coil after the finish g finishing in step g is placed in a bell-type bright annealing furnace for annealing treatment under a protective gas, wherein the protective gas is pure Up to 99.95% nitrogen, gas flow rate is 7m 3 /h, annealing temperature is controlled to 250 ⁇ 300 ° C, heating time is controlled to 3h, holding time is controlled to 6h, control furnace temperature is less than 90 ° C;
  • the annealed oxygen-free copper coil is subjected to surface cleaning through a thin strip degreasing cleaning line to remove residual water trace lubricating liquid residues and oxides on the surface of the oxygen-free copper strip after annealing.
  • the oxygen-free copper strip has a smooth surface without any surface defects;
  • the oxygen-free copper strip cleaned in step i is slit, inspected, and then packaged into a stock storage.
  • the packaging process is as follows: the tangentially-cut oxygen-free copper strip is sampled for physical and chemical testing, and the oxygen-free copper strip has an oxygen content of less than 5 ppm, a conductivity greater than 101 IACS, a thickness tolerance of 0.10 ⁇ 0.001 mm, and a tensile strength. The strength is greater than 240Mpa, the elongation is greater than 25%, and the package is qualified.
  • the method for producing a short-flow high-performance oxygen-free copper strip disclosed by the present invention reduces the two loose rolls, one work-off and one cleaning process, compared with the original processing process by optimizing the process flow. It effectively reduces the processing time and improves the production efficiency.
  • the copper strip can be rolled 0.55mm in only 10 passes, and the machining accuracy is improved not only with respect to the original process.
  • the annealing temperature was reduced by 30 ° C compared to the original process, the holding time was reduced by 1 h, and the nitrogen gas flow was also reduced by 6 m 3 /h.
  • the finishing rolling only three passes are required to achieve a processing precision of 0.1 mm.
  • the annealing temperature is lowered by 30 ° C, the holding time is reduced by 1 h, and the nitrogen gas flow is reduced by 8 m 3 /h.
  • the present invention passes the production process.
  • the optimization not only shortens the processing flow, improves the production efficiency, reduces the processing time, and the conductivity of the processed copper strip products is greater than 101IACS, and the thickness tolerance is 0.10 ⁇ 0.001mm.
  • Tensile strength greater than 240MPa, elongation more than 25%, performance is greatly enhanced, in addition to lowering the annealing temperature, reduce the amount of nitrogen gas flow also reduces the production cost.
  • the method for producing a short-flow high-performance oxygen-free copper strip disclosed by the invention comprises the following steps:
  • Double-sided milling face milling surface the oxygen-free copper strip produced in the above melting section, the residual copper oxide on the surface, must be milled, remove the surface oxide layer, and pass the oxygen-free copper strip through the double-sided milling surface and In the milling process, the upper and lower sides of the oxygen-free copper strip are milled 0.3-0.6mm, the milling speed is 3m/min, and the surface is smooth and flawless;
  • Reversible rough rolling of copper strip After milling, the oxygen-free copper strip blank is processed into a semi-finished product with a thickness of 0.55mm through 10 times of copper strip reversible roughing mill.
  • the main parameters of each rolling are :
  • the first pass entrance roll seam 17.0mm, exit roll gap 13.0mm, processing rate 23.53%, speed 60m/min, rolling force 260t, front tension 83KN, rear tension 80KN, bending roller force 15t;
  • the second pass inlet roll gap 13.0mm, outlet roll gap 9.5mm, processing rate 26.92%, speed 100m/min, rolling force 360t, front tension 83KN, back tension 80KN, bending roll force 15t;
  • the third pass 9.5mm entrance roll gap, 6.8mm outlet roll gap, processing rate 28.42%, speed 150m/min, rolling force 340t, front tension 75KN, back tension 80KN, bending roll force 15t;
  • the fifth pass inlet roll gap 4.7mm, outlet roll gap 3.2mm, processing rate 31.91%, speed 150m/min, rolling force 310t, front tension 50KN, back tension 68KN, bending roll force 25t;
  • the sixth pass 3.2mm entrance roll gap, 2.3mm outlet roll gap, processing rate 28.13%, speed 200m/min, rolling force 260t, front tension 50KN, rear tension 45KN, bending roll force 25t;
  • Seventh pass entrance roll gap 2.3mm, exit roll gap 1.6mm, processing rate 30.43%, speed 250m/min, rolling force 220t, front tension 40KN, rear tension 45KN, bending roll force 28t;
  • the eighth pass inlet roll gap 1.6mm, exit roll gap 1.1mm, processing rate 31.25%, speed 280m/min, rolling force 220t, front tension 40KN, back tension 35KN, bending roll force 27t;
  • the tenth pass inlet roll gap 0.75mm, exit roll gap 0.55mm, processing rate 26.67%, speed 300m/min, rolling force 170t, front tension 28N, back tension 33KN, bending roll force 28t;
  • the initial shearing edge of the thick strip slitting unit After 10 passes of the roughing mill, the edge of the oxygen-free copper strip blank has a fine zigzag crack under the action of pressure rolling, in order to prevent no The oxidized copper strip blank is pulled apart in the subsequent process, and the oxygen-free copper strip must be trimmed with a thick strip, and the sides are cut 10 mm, and the fine cracks at the edges are all cut off, and the edges are perfectly tidy;
  • Bell-type bright annealing furnace annealing the oxygen-free copper coil after trimming is placed in a bell-type bright annealing furnace for annealing treatment under protective gas, wherein the protective gas is nitrogen with a purity of 99.95%.
  • the gas flow rate is 3m 3 /h
  • the annealing temperature is controlled to 350°C
  • the heating time is controlled to 3h
  • the holding time is controlled to 6h
  • the controlled tapping temperature is less than 90°C, because the total processing rate is after 10 passes through the roughing mill. 96%
  • the processing hardness of the copper strip can reach more than 500 Rockwell, and it must be annealed to carry out the subsequent operation. Since the oxygen-free copper thick strip is annealed in a protective atmosphere of nitrogen, no oxidation reaction occurs, and oxygen-free copper can be made. After annealing, the surface is bright and has no oxidation;
  • thick belt degreasing cleaning line surface cleaning after annealing, the oxygen-free copper coil is subjected to surface cleaning through a thick strip degreasing cleaning line to remove residual water trace lubricating residue on the surface of the oxygen-free copper strip after annealing, so that the surface of the oxygen-free copper strip Smooth, no surface defects;
  • the first pass inlet roll gap 0.55mm, outlet roll gap 0.28mm, processing rate 49.09%, speed 180m/min, rolling force 72t, front tension 13KN, back tension 13.6KN, bending roll force 0-3t;
  • the second pass inlet roll gap 0.28mm, outlet roll gap 0.17mm, processing rate 39.28%, speed 360m/min, rolling force 75t, front tension 8KN, rear tension 8.6KN, bending roll force -2t-3t;
  • the third pass 0.17mm entrance roll gap, 0.10mm outlet roll gap, processing rate 42.35%, speed 360m/min, rolling force 75t, front tension 4KN, rear tension 4.3KN, bending roll force -3-2t;
  • the rolled-free oxygen-free copper coil is placed in a bell-type bright annealing furnace for annealing treatment under a protective gas, wherein the protective gas has a purity of 99.95. % nitrogen, gas flow rate is 7m 3 /h, annealing temperature is controlled to 250 ⁇ 300°C, heating time is controlled to 3h, holding time is controlled to 6h, control furnace temperature is less than 90°C, and hardness of copper strip after finishing rolling mill is processed. For 350HV, it needs to be annealed to meet the performance requirements of the finished product;
  • the annealed oxygen-free copper coil is subjected to surface cleaning through a thin strip degreasing cleaning line to remove residual water trace lubricating liquid residues and oxides on the surface of the oxygen-free copper strip after annealing.
  • the oxygen-free copper strip has a smooth surface without any surface defects;
  • thin strip slitting unit finished product slitting thin strip slitting unit is the process of slitting a wide strip of oxygen-free copper strip into the narrow strip width required by the finished product;
  • Packaging unit packaging and physical and chemical inspection Physical and chemical testing of the cut oxygen-free copper strip is carried out.
  • the oxygen content of the oxygen-free copper strip is less than 5ppm, the conductivity is greater than 101IACS, the thickness tolerance is 0.10 ⁇ 0.001mm, and the tensile strength is More than 240Mpa, the elongation is more than 25%, after packaging, it is packaged to prevent oxidation and surface contamination;
  • Storage inspection and storage Detect the weight, thickness and width of the oxygen-free copper strip, and the density of the oxygen-free copper strip is 8.9g/cm 3 , and then store it in the warehouse.

Abstract

一种短流程高性能无氧铜带的生产方法，包括如下步骤：水平连铸引锭拉坯、双面铣削面铣面、铜带可逆粗中轧、厚带纵剪机组初剪边、钟罩式光亮退火炉一次退火、厚带脱脂清洗线表面清洗、四辊可逆精轧机精轧、钟罩式光亮退火炉成品二次退火、薄带脱脂清洗线表面清洗、后处理。上述生产方法通过对工艺流程的优化以及粗轧和精轧工序的加工道次的优化，缩短了加工流程，提高了生产效率，减少了加工时间；通过对退火温度、保温时间、保护气流量的优化，提升了产品的性能。

Description

一种短流程高性能无氧铜带的生产方法 技术领域
本发明涉及一种铜带的生产方法，尤其涉及一种短流程高性能无氧铜带的生产方法。
背景技术
铜及铜合金板带材是铜加工中的重要产品，是国民经济建设中不可或缺的金属材料，具有优良的导电、导热、耐蚀、电连接、电接触、弹性等，被广泛应用于各工业领域，如机械、电子、汽车、电力、通信、交通等。2014年，我国铜板带生产企业有300余家，产量为250万吨，进口量为35.82万吨，出口量为18.95万吨，此数据每年还呈现上升趋势，我国一般产品已经出现过剩，高档产品仍依赖进口，我国铜板带加工水平普遍落后于发达国家，不能满足飞速发展的行业要求。近年来，具有高导热、高导电、高致密度、高延伸率等特性的高性能铜带是真空电子等间断领域的基本材料，我国大部分铜加工企业采用的生产方法存在工艺流程长、成材率低、性能差等缺点，很难满足我国配套行业的要求。因此，流程短、性能高的无氧铜带成了国内诸多铜加工工作的重点。
发明内容
本发明的目的在于提供一种短流程高性能无氧铜带的生产方法，通过对工艺流程的优化以及粗轧和精轧工序的加工道次的优化，缩短了加工流程，提高了生产效率，减少了加工时间，通过对退火温度、保温时间、保护气流量的优化，提升产品的性能。
本发明的技术方案为：一种短流程高性能无氧铜带的生产方法，具体包括如下步骤：
a、水平连铸引锭拉坯：将电解铜加入熔化炉内熔炼，控制熔炼温度1150-1200℃，并向熔化炉内加入100-150mm厚度的木炭作为覆盖剂，熔化炉内电解铜形成的铜液潜流到保温炉腔内，控制保温炉温度为1180-1250℃，且保温炉内使用石墨鳞片作为覆盖剂，铜液在重力作用下，流入结晶器内石墨模具中形成铜坯，并由引锭机通过拉、停、反推、停的循环动作连续引拉，控制引锭机速度为100-150mm/min，所述结晶器内冷却水温为20-25℃，冷却水压1.0-1.2Mpa，石 墨模具尺寸为450*17mm；
b、双面铣削面铣面：将上述步骤a生产的无氧铜带坯进行双面铣面及铣削作业，去除表面氧化层，具体为将无氧铜带上下两面各铣削0.3-0.6mm，铣削速度3m/min，达到表面光洁，无缺陷的标准；
c、铜带可逆粗中轧：将步骤b铣削后的无氧铜带坯通过铜带可逆粗轧机经过10个道次粗轧，将铜带加工成厚度为0.55mm的半成品，其中每道轧制的主要参数为：
第一道次：入口辊缝17.0mm，出口辊缝13.0mm，加工率23.53％，速度60m/min，轧制力260t，前张力83KN，后张力80KN，弯辊力15t；
第二道次：入口辊缝13.0mm，出口辊缝9.5mm，加工率26.92％，速度100m/min，轧制力360t，前张力83KN，后张力80KN，弯辊力15t；
第三道次：入口辊缝9.5mm，出口辊缝6.8mm，加工率28.42％，速度150m/min，轧制力340t，前张力75KN，后张力80KN，弯辊力15t；
第四道次：入口辊缝6.8mm，出口辊缝4.7mm，加工率30.88％，速度150m/min，轧制力320t，前张力75KN，后张力68KN，弯辊力20t；
第五道次：入口辊缝4.7mm，出口辊缝3.2mm，加工率31.91％，速度150m/min，轧制力310t，前张力50KN，后张力68KN，弯辊力25t；
第六道次：入口辊缝3.2mm，出口辊缝2.3mm，加工率28.13％，速度200m/min，轧制力260t，前张力50KN，后张力45KN，弯辊力25t；
第七道次：入口辊缝2.3mm，出口辊缝1.6mm，加工率30.43％，速度250m/min，轧制力220t，前张力40KN，后张力45KN，弯辊力28t；
第八道次：入口辊缝1.6mm，出口辊缝1.1mm，加工率31.25％，速度280m/min，轧制力220t，前张力40KN，后张力35KN，弯辊力27t；
第九道次：入口辊缝1.1mm，出口辊缝0.75mm，加工率31.82％，速度300m/min，轧制力180t，前张力33N，后张力35KN，弯辊力30t；
第十道次：入口辊缝0.75mm，出口辊缝0.55mm，加工率26.67％，速度300m/min，轧制力170t，前张力28N，后张力33KN，弯辊力28t；
d、厚带纵剪机组初剪边：将步骤c粗轧后的无氧铜带厚带剪边处理，两边各剪掉10mm，边部的细微裂口全部被切除，边部完好整齐；
e、钟罩式光亮退火炉一次退火：将步骤d剪边后的无氧铜带卷放入钟罩式光亮退火炉中在保护性气体下进行退火作业处理，其中保护性气体为纯度达99.95％的氮气，气体流量为3m3/h，退火温度控制为350℃，加热时间控制为3h，保温时间控制为6h，控制出炉温度小于90℃；
f、厚带脱脂清洗线表面清洗：将步骤e一次退火后的无氧铜带卷经过厚带脱脂清洗线进行表面清洗，去除退火后无氧铜带表面残留的水迹润滑液残留，使无氧铜带表面光洁，无表面缺陷；
g、四辊可逆精轧机精轧：经过步骤f厚带脱脂清洗线清洗的无氧铜带卷，经过四辊可逆精轧机3个道次的加工，制备成厚度为0.1mm的成品，其中轧制的参数如下：
第一道次：入口辊缝0.55mm，出口辊缝0.28mm，加工率49.09％，速度180m/min，轧制力72t，前张力13KN，后张力13.6KN，弯辊力0-3t；
第二道次：入口辊缝0.28mm，出口辊缝0.17mm，加工率39.28％，速度360m/min，轧制力75t，前张力8KN，后张力8.6KN，弯辊力-2t-3t；
第三道次：入口辊缝0.17mm，出口辊缝0.10mm，加工率42.35％，速度360m/min，轧制力75t，前张力4KN，后张力4.3KN，弯辊力-3-2t；
h、钟罩式光亮退火炉成品二次退火：将步骤g精轧后的无氧铜带卷放入钟罩式光亮退火炉中在保护性气体下进行退火作业处理，其中保护性气体为纯度达99.95％的氮气，气体流量为7m3/h，退火温度控制为250～300℃，加热时间控制为3h，保温时间控制为6h，控制出炉温度小于90℃；
i、薄带脱脂清洗线表面清洗：将退火后的无氧铜带卷经过薄带脱脂清洗线进行表面清洗，去除退火后无氧铜带坯表面残留的水迹润滑液残留和氧化物，使无氧铜带表面光洁，无任何表面缺陷；
j、后处理，将步骤i中清洗完的无氧铜带进行分切，检验，然后包装入库存储。
所述步骤l中检验包装工序为：将分切好的无氧铜带抽样进行理化检验，测试无氧铜带的含氧量小于5ppm，导电率大于101IACS，厚度公差0.10±0.001mm，抗拉强度大于240Mpa，延伸率大于25％，合格后进行包装。
有益效果：本发明所揭示的一种短流程高性能无氧铜带的生产方法，通过对 工艺流程的优化，相对于原先的加工工序减少了两道松卷，一道退工及一道清洗工序，有效减少了加工时间，提高了生产效率，同时在粗轧工序中通过控制各个道次的参数，只需10道次就可以将铜带轧制0.55mm，相对于原先的工艺不仅加工精度提高，还减少了一个道次，同时在一次退火处理中，通过采用钟罩式光亮退火炉相对于原有工艺退火温度降低了30℃，保温时间降低了1h，氮气气流也减少了6m3/h，精轧中只需要三个道次就可实现0.1mm的加工精度，二次退火处理中，退火温度降低了30℃，保温时间减少1h，氮气气流减少8m3/h，本发明通过对生产工艺的优化，不仅缩短了加工流程，提高了生产效率，减少了加工时间，加工后的铜带产品导电率大于101IACS，厚度公差0.10±0.001mm，抗拉强度大于240Mpa，延伸率大于25％，性能得到大大的提升，此外退火温度的降低，氮气气流用量减少也降低了生产成本。
具体实施方式
下面将结合具体实施例，对本发明的技术方案进行清楚、完整的描述。
本发明所揭示的一种短流程高性能无氧铜带的生产方法，具体包括如下步骤：
a、水平连铸引锭拉坯：以电解铜为原料，加入熔化炉内熔炼，熔炼温度保持在1150-1200℃，向熔化炉内加入100-150mm厚度的木炭作为覆盖剂，熔化炉内铜液通过炉膛底部的流槽潜流到保温炉腔内，保温炉温度保持在1180-1250℃，且保温炉使用石墨鳞片作为覆盖剂，所述保温炉内铜液液位高度为50-70mm，铜液在重力作用下，流入结晶器内石墨模具中形成铜坯，并由引锭机通过拉、停、反推、停的循环动作连续引拉，控制引锭机速度为100-150mm/min，所述结晶器内冷却水温为20-25℃，冷却水压1.0-1.2Mpa，石墨模具尺寸为450*17mm；
b、双面铣削面铣面：上述熔炼工段生产的无氧铜带坯，表面残留的铜氧化物，必须进行铣面作业，去除表面氧化层，将无氧铜带坯经过双面铣面及铣削工序，将无氧铜带上下两面各铣削0.3-0.6mm，铣削速度3m/min，达到表面光洁，无缺陷的标准；
c、铜带可逆粗中轧：铣削后的无氧铜带坯经铜带可逆粗轧机经过10个道次，将铜带加工成厚度为0.55mm的半成品，其中每道轧制的主要参数为：
第一道次：入口辊缝17.0mm，出口辊缝13.0mm，加工率23.53％，速度 60m/min，轧制力260t，前张力83KN，后张力80KN，弯辊力15t；
第二道次：入口辊缝13.0mm，出口辊缝9.5mm，加工率26.92％，速度100m/min，轧制力360t，前张力83KN，后张力80KN，弯辊力15t；
第三道次：入口辊缝9.5mm，出口辊缝6.8mm，加工率28.42％，速度150m/min，轧制力340t，前张力75KN，后张力80KN，弯辊力15t；
第四道次：入口辊缝6.8mm，出口辊缝4.7mm，加工率30.88％，速度150m/min，轧制力320t，前张力75KN，后张力68KN，弯辊力20t；
第五道次：入口辊缝4.7mm，出口辊缝3.2mm，加工率31.91％，速度150m/min，轧制力310t，前张力50KN，后张力68KN，弯辊力25t；
第六道次：入口辊缝3.2mm，出口辊缝2.3mm，加工率28.13％，速度200m/min，轧制力260t，前张力50KN，后张力45KN，弯辊力25t；
第七道次：入口辊缝2.3mm，出口辊缝1.6mm，加工率30.43％，速度250m/min，轧制力220t，前张力40KN，后张力45KN，弯辊力28t；
第八道次：入口辊缝1.6mm，出口辊缝1.1mm，加工率31.25％，速度280m/min，轧制力220t，前张力40KN，后张力35KN，弯辊力27t；
第九道次：入口辊缝1.1mm，出口辊缝0.75mm，加工率31.82％，速度300m/min，轧制力180t，前张力33N，后张力35KN，弯辊力30t；
第十道次：入口辊缝0.75mm，出口辊缝0.55mm，加工率26.67％，速度300m/min，轧制力170t，前张力28N，后张力33KN，弯辊力28t；
d、厚带纵剪机组初剪边：经过粗轧机10个道次的轧制，无氧铜带坯的边部在压力轧制的作用下，已经出现细微的锯齿形的裂口，为了防止无氧铜带坯在后续工序中拉力拉断，必须进行无氧铜带厚带剪边处理，将两边各剪掉10mm，边部的细微裂口全部被切除，边部完好整齐；
e、钟罩式光亮退火炉退火：将剪边后的无氧铜带卷放入钟罩式光亮退火炉中在保护性气体下进行退火作业处理，其中保护性气体为纯度达99.95％的氮气，气体流量为3m3/h，退火温度控制为350℃，加热时间控制为3h，保温时间控制为6h，控制出炉温度小于90℃，因为经过粗轧机轧制10道次后，总加工率为96％，铜带的加工硬度可达洛氏500以上，必须进行退火作业才能进行后续作业，由于无氧铜厚带在氮气的保护性气氛中进行退火，没有发生氧化反应，可以使得 无氧铜带退火后表面光亮无氧化现象；
f、厚带脱脂清洗线表面清洗：将退火后无氧铜带卷经过厚带脱脂清洗线进行表面清洗，去除退火后无氧铜带表面残留的水迹润滑液残留，使无氧铜带表面光洁，无表面缺陷；
g、四辊可逆精轧机精轧：经过厚带脱脂清洗线清洗的无氧铜带卷，经过四辊可逆精轧机3个道次的加工，将无氧铜带卷加工成厚度为0.1mm的成品要求，其中轧制的参数如下：
第一道次：入口辊缝0.55mm，出口辊缝0.28mm，加工率49.09％，速度180m/min，轧制力72t，前张力13KN，后张力13.6KN，弯辊力0-3t；
第二道次：入口辊缝0.28mm，出口辊缝0.17mm，加工率39.28％，速度360m/min，轧制力75t，前张力8KN，后张力8.6KN，弯辊力-2t-3t；
第三道次：入口辊缝0.17mm，出口辊缝0.10mm，加工率42.35％，速度360m/min，轧制力75t，前张力4KN，后张力4.3KN，弯辊力-3-2t；
h、钟罩式光亮退火炉成品二次退火：将精轧后的无氧铜带卷放入钟罩式光亮退火炉中在保护性气体下进行退火作业处理，其中保护性气体为纯度达99.95％的氮气，气体流量为7m3/h，退火温度控制为250～300℃，加热时间控制为3h，保温时间控制为6h，控制出炉温度小于90℃，经过精轧机轧制的铜带加工硬度为350HV，需经过退火后才可达到成品性能要求；
i、薄带脱脂清洗线表面清洗：将退火后的无氧铜带卷经过薄带脱脂清洗线进行表面清洗，去除退火后无氧铜带坯表面残留的水迹润滑液残留和氧化物，使无氧铜带表面光洁，无任何表面缺陷；
j、薄带纵剪机组成品分切：薄带纵剪机组就是将宽幅的无氧铜带分切成成品要求的窄带宽度的过程；
k、包装机组包装和理化检验：将分切好的无氧铜带抽样进行理化检验，测试无氧铜带的含氧量小于5ppm，导电率大于101IACS，厚度公差0.10±0.001mm，抗拉强度大于240Mpa，延伸率大于25％，合格后进行包装，以防止氧化和表面污染；
l、入库检验、存储：检测无氧铜带的重量、厚度、宽度，无氧铜带的密度8.9g/cm3，然后进行仓库存储。
以上对本发明创造的一个实施例进行了详细说明，但所述内容仅为本发明创造的较佳实施例，不能被认为用于限定本发明创造的实施范围。凡依本发明创造申请范围所作的均等变化与改进等，均归属于本发明创造的专利涵盖范围之内。

Claims (2)

  1. 一种短流程高性能无氧铜带的生产方法，其特征在于包括如下步骤：
    a、水平连铸引锭拉坯：将电解铜加入熔化炉内熔炼，控制熔炼温度1150-1200℃，并向熔化炉内加入100-150mm厚度的木炭作为覆盖剂，熔化炉内电解铜形成的铜液潜流到保温炉腔内，控制保温炉温度为1180-1250℃，且保温炉内使用石墨鳞片作为覆盖剂，铜液在重力作用下，流入结晶器内石墨模具中形成铜坯，并由引锭机通过拉、停、反推、停的循环动作连续引拉，控制引锭机速度为100-150mm/min，所述结晶器内冷却水温为20-25℃，冷却水压1.0-1.2Mpa，石墨模具尺寸为450*17mm；
    b、双面铣削面铣面：将上述步骤a生产的无氧铜带坯进行双面铣面及铣削作业，去除表面氧化层，具体为将无氧铜带上下两面各铣削0.3-0.6mm，铣削速度3m/min，达到表面光洁，无缺陷的标准；
    c、铜带可逆粗中轧：将步骤b铣削后的无氧铜带坯通过铜带可逆粗轧机经过10个道次粗轧，将铜带加工成厚度为0.55mm的半成品，其中每道轧制的主要参数为：
    第一道次：入口辊缝17.0mm，出口辊缝13.0mm，加工率23.53％，速度60m/min，轧制力260t，前张力83KN，后张力80KN，弯辊力15t；
    第二道次：入口辊缝13.0mm，出口辊缝9.5mm，加工率26.92％，速度100m/min，轧制力360t，前张力83KN，后张力80KN，弯辊力15t；
    第三道次：入口辊缝9.5mm，出口辊缝6.8mm，加工率28.42％，速度150m/min，轧制力340t，前张力75KN，后张力80KN，弯辊力15t；
    第四道次：入口辊缝6.8mm，出口辊缝4.7mm，加工率30.88％，速度150m/min，轧制力320t，前张力75KN，后张力68KN，弯辊力20t；
    第五道次：入口辊缝4.7mm，出口辊缝3.2mm，加工率31.91％，速度150m/min，轧制力310t，前张力50KN，后张力68KN，弯辊力25t；
    第六道次：入口辊缝3.2mm，出口辊缝2.3mm，加工率28.13％，速度200m/min，轧制力260t，前张力50KN，后张力45KN，弯辊力25t；
    第七道次：入口辊缝2.3mm，出口辊缝1.6mm，加工率30.43％，速度250m/min，轧制力220t，前张力40KN，后张力45KN，弯辊力28t；
    第八道次：入口辊缝1.6mm，出口辊缝1.1mm，加工率31.25％，速度280m/min，轧制力220t，前张力40KN，后张力35KN，弯辊力27t；
    第九道次：入口辊缝1.1mm，出口辊缝0.75mm，加工率31.82％，速度300m/min，轧制力180t，前张力33N，后张力35KN，弯辊力30t；
    第十道次：入口辊缝0.75mm，出口辊缝0.55mm，加工率26.67％，速度300m/min，轧制力170t，前张力28N，后张力33KN，弯辊力28t；
    d、厚带纵剪机组初剪边：将步骤c粗轧后的无氧铜带厚带剪边处理，两边各剪掉10mm，边部的细微裂口全部被切除，边部完好整齐；
    e、钟罩式光亮退火炉一次退火：将步骤d剪边后的无氧铜带卷放入钟罩式光亮退火炉中在保护性气体下进行退火作业处理，其中保护性气体为纯度达99.95％的氮气，气体流量为3m3/h，退火温度控制为350℃，加热时间控制为3h，保温时间控制为6h，控制出炉温度小于90℃；
    f、厚带脱脂清洗线表面清洗：将步骤e一次退火后的无氧铜带卷经过厚带脱脂清洗线进行表面清洗，去除退火后无氧铜带表面残留的水迹润滑液残留，使无氧铜带表面光洁，无表面缺陷；
    g、四辊可逆精轧机精轧：经过步骤f厚带脱脂清洗线清洗的无氧铜带卷，经过四辊可逆精轧机3个道次的加工，制备成厚度为0.1mm的成品，其中轧制的参数如下：
    第一道次：入口辊缝0.55mm，出口辊缝0.28mm，加工率49.09％，速度180m/min，轧制力72t，前张力13KN，后张力13.6KN，弯辊力0-3t；
    第二道次：入口辊缝0.28mm，出口辊缝0.17mm，加工率39.28％，速度360m/min，轧制力75t，前张力8KN，后张力8.6KN，弯辊力-2t-3t；
    第三道次：入口辊缝0.17mm，出口辊缝0.10mm，加工率42.35％，速度360m/min，轧制力75t，前张力4KN，后张力4.3KN，弯辊力-3-2t；
    h、钟罩式光亮退火炉成品二次退火：将步骤g精轧后的无氧铜带卷放入钟罩式光亮退火炉中在保护性气体下进行退火作业处理，其中保护性气体为纯度达99.95％的氮气，气体流量为7m3/h，退火温度控制为250～300℃，加热时间控制为3h，保温时间控制为6h，控制出炉温度小于90℃；
    i、薄带脱脂清洗线表面清洗：将退火后的无氧铜带卷经过薄带脱脂清洗线 进行表面清洗，去除退火后无氧铜带坯表面残留的水迹润滑液残留和氧化物，使无氧铜带表面光洁，无任何表面缺陷；
    j、后处理，将步骤i中清洗完的无氧铜带进行分切，检验，然后包装入库存储。
  2. 根据权利要求1所述的短流程高性能无氧铜带的生产方法，其特征在于：所述步骤l中检验包装工序为：将分切好的无氧铜带抽样进行理化检验，测试无氧铜带的含氧量小于5ppm，导电率大于101IACS，厚度公差0.10±0.001mm，抗拉强度大于240Mpa，延伸率大于25％，合格后进行包装。
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