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    • 42. 发明公开
    • 열연소재의 산세효율 향상장치
    • 提高热轧工作效率的装置
    • KR1020040011186A
    • 2004-02-05
    • KR1020020044643
    • 2002-07-29
    • 주식회사 포스코
    • 박재찬박순복
    • C23G3/02
    • C23G3/025C23G1/081
    • PURPOSE: A device for improving pickling efficiency of hot rolling workpiece is provided to improve degreasing power when cleaning the workpiece by vertically moving the hot rolling workpiece passing through pickling tank, thereby varying a looper quantity and improve pickling efficiency by minimizing settlement quantity of various sludge. CONSTITUTION: In a hot rolling workpiece pickling facility comprising a pickling tank in which sulfuric acid for pickling a hot rolling workpiece(120) is filled, the device for improving pickling efficiency of the hot rolling workpiece comprises a driving part(10) comprising inclined rotational shafts(16,18) installed at both sides of fixed stand(22) installed inside the pickling tank in such a manner that the inclined rotational shafts(16,18) are rotated by motors(12,14), and an inclined rotational plate(20) integrally fixed to an upper part of the inclined rotational shafts(16,18); and a workpiece looper varying part comprising a sliding shaft(34) connected to the inclined rotational plate(20) in a universal joint shape, and a roll(36) into both end parts of which the sliding shaft(34) is rotationally and slidingly inserted, and through an upper part of which the hot rolling workpiece(120) passes with being closely adhered to the roll(36), wherein a linear stroke bearing(38) is mounted on both end parts of the sliding shaft(34) inserted the roll(36) so that the sliding shaft(34) is rotated and slid by the linear stroke bearing(38).
    • 目的:提供一种提高热轧工件酸洗效率的装置,通过垂直移动通过​​酸洗槽的热轧工件清洗工件,提高脱脂能力,通过最大限度地减少各种污泥的沉淀量,改变浇口量,提高酸洗效率 。 构成:在热轧工件酸洗设备中,包括一个其中填充用于酸洗热轧工件(120)的硫酸的酸洗槽,用于提高热轧工件的酸洗效率的装置包括驱动部分(10),其包括倾斜旋转 安装在酸洗槽内侧的固定支架(22)的两侧的轴(​​16,18)以倾斜的旋转轴(16,18)由马达(12,14)旋转的方式安装,以及倾斜的旋转板 (20)一体地固定到倾斜旋转轴(16,18)的上部; 以及工件弯针变化部,其包括以万向接头形状连接到所述倾斜旋转板(20)的滑动轴(34),并且在所述滑动轴(34)的两端部旋转滑动的辊(36) 并且通过其热轧工件(120)的上部与密封件(36)紧密地粘合在一起,其中一个直线行程轴承(38)安装在插入的滑动轴(34)的两个端部上 所述辊(36)使得所述滑动轴(34)由所述直线行程轴承(38)旋转和滑动。
    • 43. 发明公开
    • 무소둔 오스테나이트계 스테인레스강의 산세 방법
    • 非退火奥氏体不锈钢的制取工艺
    • KR1020020049739A
    • 2002-06-26
    • KR1020000079020
    • 2000-12-20
    • 주식회사 포스코
    • 류승기하헌재
    • C23G1/00
    • C23G1/086C21D2211/001C23G1/081C23G1/085
    • PURPOSE: Provided is a pickling process of a non-annealing austenite stainless steel which lowers the quantity of metal eluted in solution and the concentration of acid so that it secures pickling speed and pickling property. CONSTITUTION: In the pickling process which pretreats non-annealing austenite stainless steel at a sulfuric acid bath and then pickles at a mixed acid bath, the pickling process of the non-annealing austenite stainless steel is characterized by keeping conditions of the mixed acid bath to be 120-150g/L for nitric acid, 40-140g/L for fluoric acid, 60-65 deg.C at temperature, 30-60 seconds for pickling duration and less than 20g/L at metal ion concentration among acid solutions.
    • 目的:提供一种非退火奥氏体不锈钢的酸洗工艺,降低溶液中洗脱的金属数量和酸浓度,从而确保酸洗速度和酸洗性能。 构成:在硫酸浴中预处理非退火奥氏体不锈钢,然后在混合酸浴中腌制的酸洗过程中,非退火奥氏体不锈钢的酸洗工艺的特征在于将混合酸浴的条件保持在 硝酸为120-150g / L,氟酸为40-140g / L,温度为60-65℃,酸洗时间为30-60秒,酸溶液中金属离子浓度小于20g / L。
    • 44. 发明公开
    • 페라이트계스테인레스강의청정산세방법
    • 铁素体不锈钢清洁方法
    • KR1020000045524A
    • 2000-07-15
    • KR1019980062083
    • 1998-12-30
    • 주식회사 포스코
    • 류승기하헌재
    • C23G1/02
    • C23G1/081C21D2211/005
    • PURPOSE: A clean acid cleansing method of ferrite stainless steel is provided to clean a ferrite stainless steel by using only a sulfuric acid tub without using a mixed acid tub causing environmental pollution due to generation of NOx. CONSTITUTION: A portion of scales on a steel sheet passing through an annealing blaster or a shot blaster is removed mechanically by using a device(18) such as a grinding brush. To eliminate generation of NOx due to use of a mixed acid tub originally, 15-25g/l of Fe(NO3)3*9H2O is added to perform as a mixed acid tub in a sulfuric acid tub(4) and to secure the speed of a general acid cleansing. The acid cleansing is performed under the condition of the temperature of the sulfuric acid tub is 90-100°C and the concentration is 150-200g/l. By performing acid cleansing by using only the sulfuric acid tub, the concentration is set up higher than a general cleansing method. The amount of metal molten in a solution is reduced and the use amount of acid is reduced thereby.
    • 目的:提供一种铁酸盐不锈钢的清洁酸洗方法,仅使用硫酸桶来清洁铁素体不锈钢,而不使用由于产生NOx而引起环境污染的混合酸槽。 构成:通过使用诸如研磨刷的装置(18)机械地去除通过退火喷射器或喷丸机的钢板上的一部分鳞片。 为了消除由于使用混合酸槽而产生的NOx,首先加入15-25g / l的Fe(NO 3)3·9H 2 O作为硫酸桶(4)中的混合酸浴,并确保速度 的一般酸性清洗。 在硫酸桶温度为90-100℃,浓度为150-200g / l的条件下进行酸洗。 通过仅使用硫酸浴进行酸洗,浓度比普通清洗方法高。 溶液中熔融的金属的量减少,酸的使用量降低。
    • 47. 发明公开
    • 초고강도 탄소강 합금들을 위한 스케일 컨디셔닝 공정
    • 超高强度碳钢合金的调质工艺
    • KR20180031018A
    • 2018-03-27
    • KR20187004175
    • 2016-07-22
    • KOLENE CORP
    • MALLOY JAMES CPIGNOTTI LOUIS
    • C23G1/08B21B45/06C23G1/32C23G3/02
    • C23G1/32C23G1/08C23G1/081C23G3/02
    • 양태들은적어도 2중량%의합금을포함하는초고강도금속표면상에형성된산화철및 합금원소산화물들을포함하는스케일층을처리및 제거한다. 제 1 컨디셔닝공정은스케일층 내의산화철의구조적완전성을손상시키거나산화철을제거하여, 배치된용액내의하나이상의알칼리염들을준-용융형태로변형시키기위해가열되는배치된알칼리염 수용액과의화학적결합에합금산화물을노출시킨다. 합금산화물은준 용융된알칼리염(들) 및물의용액과의반응을통해산화되어하나이상의수용성알칼리합금화합물들을형성한다. 물린스는초고강도의강 제품표면으로부터수용성화합물(들)을용해시키고린스하여표면상에산화철의막을남기며, 이는최종피클링공정을통해제거된다.
    • 实施例处理和去除包含在包含至少2重量%合金的超高强度金属表面上形成的氧化铁和合金元素氧化物的氧化皮。 第一调节过程,结构完整性地损害减少或去除氧化铁,在尺度层中的铁氧化物的批量溶液与碱性盐溶液给予的一种或多种碱金属盐,在化学组合设置被加热到转变为熔融形式 从而暴露合金氧化物。 合金氧化物通过与准熔融碱金属盐和水溶液反应而被氧化以形成一种或多种水溶性碱金属化合物。 Mullins从超高强度钢产品表面溶解并冲洗水溶性化合物,在表面留下氧化铁膜,通过最终的酸洗工艺去除氧化铁膜。