WO2021217952A1 - Steel wire pickling process - Google Patents
Steel wire pickling process Download PDFInfo
- Publication number
- WO2021217952A1 WO2021217952A1 PCT/CN2020/108797 CN2020108797W WO2021217952A1 WO 2021217952 A1 WO2021217952 A1 WO 2021217952A1 CN 2020108797 W CN2020108797 W CN 2020108797W WO 2021217952 A1 WO2021217952 A1 WO 2021217952A1
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- WO
- WIPO (PCT)
- Prior art keywords
- pickling
- hydrochloric acid
- temperature
- wire
- carrying
- Prior art date
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Classifications
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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
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/08—Iron or steel
Definitions
- the invention relates to a pickling process for steel wire rods.
- the traditional process is to use hydrochloric acid or sulfuric acid when pickling the wire after heat treatment. Because sulfuric acid is used for cleaning, it needs to be heated and maintained at a high temperature, and sulfuric acid is highly corrosive and has a high risk factor. Therefore, it is used in the traditional wire cleaning industry. Hydrochloric acid is often used for cleaning. Because hydrochloric acid is volatile, less corrosive than sulfuric acid, and the waste cycle is short, it is basically at room temperature during use, and there is no temperature control. However, as customers have The demand for waste is getting higher and higher. How to improve the use efficiency of hydrochloric acid and reduce the amount of waste is the focus of research, so that under the same conditions such as the same concentration and specific gravity, the temperature is adjusted and controlled to improve the cleaning efficiency of pickling, and Reduce the output of hazardous waste.
- the present invention aims to provide a pickling process for steel wire rods.
- By controlling the use temperature of pickling hydrochloric acid different temperatures are used under different working conditions to improve the use efficiency and use time of hydrochloric acid.
- a steel wire pickling process the production process is as follows:
- the first step is the wire coil
- the second step is the preliminary wire drawing
- the third step is heat treatment
- the fourth step is to preheat the pickling tank
- the conveying wire is pickled, and the temperature of hydrochloric acid is controlled at the same time, and the temperature is kept at 40°C continuously;
- the seventh step is to draw the finished product.
- a Teflon heating tube row is used for heating, and steam is used to reduce the heat of the hydrochloric acid.
- a temperature sensor is used for real-time monitoring, and the temperature of the hydrochloric acid is maintained at 40°C.
- the steel wire pickling process provided by the present invention can improve the production cleaning efficiency, reduce the output of hazardous waste, improve the use efficiency of hydrochloric acid, and reduce the surface quality under the premise of guaranteeing the surface quality. Abandonment rate.
- the pickling process for steel wire rod provided by the present invention is as follows:
- the first step is the wire coil
- the second step is the preliminary wire drawing
- the third step is heat treatment
- the fourth step is to preheat the pickling tank
- the conveying wire is pickled, and the temperature of hydrochloric acid is controlled at the same time, and the temperature is kept at 40°C continuously;
- the seventh step is to draw the finished product.
- a Teflon heating tube row is used for heating, and steam is used to reduce the heat of the hydrochloric acid.
- a temperature sensor is used for real-time monitoring, and the temperature of the hydrochloric acid is maintained at 40°C.
- the original cleaning time can be reduced by about 10% under the condition that the concentration, specific gravity, iron ion, etc. remain unchanged.
- the original waste cycle is maintained at a constant temperature of 40°C ⁇ 2 under the same conditions, and the waste cycle can be The delay is about 20%.
Abstract
A steel wire pickling process, the production process being as follows: step 1, carrying out wire coiling; step 2, carrying out preliminary wire drawing; step 3, carrying out heat treatment; step 4, preheating and heating a pickling tank; step 5, conveying a wire rod for pickling, controlling the temperature of hydrochloric acid, and continuously keeping the temperature at 40°C; step 6, carrying out phosphorus saponification once pickling is complete; and step 7, carrying out finished product wire drawing. On the premise that the surface quality is guaranteed, the production and cleaning efficiency may be improved, output of hazardous waste is reduced, the usage efficiency of the hydrochloric acid is improved, and the waste rate is reduced.
Description
本发明涉及一种钢类线材酸洗工艺。The invention relates to a pickling process for steel wire rods.
传统工艺为热处理后线材在进行酸洗时，有使用盐酸或硫酸等方式，因使用硫酸进行清洗需要进行加热且维持温度较高，并且硫酸腐蚀性强烈，危险系数高，故在传统线材清洗行业内较多采用盐酸进行清洗，因盐酸易挥发、侵蚀性较弱于硫酸，废弃周期短等因素，在使用中基本处于常温状态，不进行管制温度，但随着客户对线材表面品质以及环保危废等的要求愈来愈高，怎样提高盐酸的使用效率降低废弃量作为重点进行研究，从而在相同浓度比重等条件不变的情况下，调整温度进行管制，来提高酸洗的清洗效率，并降低危废的产出量。The traditional process is to use hydrochloric acid or sulfuric acid when pickling the wire after heat treatment. Because sulfuric acid is used for cleaning, it needs to be heated and maintained at a high temperature, and sulfuric acid is highly corrosive and has a high risk factor. Therefore, it is used in the traditional wire cleaning industry. Hydrochloric acid is often used for cleaning. Because hydrochloric acid is volatile, less corrosive than sulfuric acid, and the waste cycle is short, it is basically at room temperature during use, and there is no temperature control. However, as customers have The demand for waste is getting higher and higher. How to improve the use efficiency of hydrochloric acid and reduce the amount of waste is the focus of research, so that under the same conditions such as the same concentration and specific gravity, the temperature is adjusted and controlled to improve the cleaning efficiency of pickling, and Reduce the output of hazardous waste.
发明内容Summary of the invention
本发明旨在提供一种钢类线材酸洗工艺，通过控制酸洗盐酸的使用温度，在不同的工况下采用不同的温度，提高盐酸的使用效率和使用时间。The present invention aims to provide a pickling process for steel wire rods. By controlling the use temperature of pickling hydrochloric acid, different temperatures are used under different working conditions to improve the use efficiency and use time of hydrochloric acid.
为解决上述问题，本发明提供的一种钢类线材酸洗工艺采用了如下技术方案：In order to solve the above-mentioned problems, a steel wire pickling process provided by the present invention adopts the following technical solutions:
一种钢类线材酸洗工艺，生产工艺如下：A steel wire pickling process, the production process is as follows:
第一步，线材盘元；The first step is the wire coil;
第二步，初步伸线；The second step is the preliminary wire drawing;
第三步，进行热处理；The third step is heat treatment;
第四步，对酸洗池进行预热加温；The fourth step is to preheat the pickling tank;
第五步，输送线材进行酸洗，同时控制盐酸温度，持续保温在40℃；In the fifth step, the conveying wire is pickled, and the temperature of hydrochloric acid is controlled at the same time, and the temperature is kept at 40°C continuously;
第六步，酸洗完毕后进行磷皂化；In the sixth step, phosphorous saponification is carried out after the pickling is completed;
第七步，进行成品伸线。The seventh step is to draw the finished product.
进一步的，在第四步中，采用特氟龙加热管排进行加热，利用蒸汽降热盐酸。Further, in the fourth step, a Teflon heating tube row is used for heating, and steam is used to reduce the heat of the hydrochloric acid.
进一步的，在第五步中，利用温度传感器进行实时监控，保持盐酸温度在40℃。Further, in the fifth step, a temperature sensor is used for real-time monitoring, and the temperature of the hydrochloric acid is maintained at 40°C.
本发明的有益效果在于：本发明提供的一种钢类线材酸洗工艺，在表面品质得到保障的前提下，可提高生产清洗效率，降低危险废弃物的产出量，提高盐酸使用效率，降低废弃率。The beneficial effects of the present invention are: the steel wire pickling process provided by the present invention can improve the production cleaning efficiency, reduce the output of hazardous waste, improve the use efficiency of hydrochloric acid, and reduce the surface quality under the premise of guaranteeing the surface quality. Abandonment rate.
为了更清楚的了解本发明提供的技术方案，下面结合具体的实施例对本发明做进一步的说明。In order to have a clearer understanding of the technical solutions provided by the present invention, the present invention will be further described below in conjunction with specific embodiments.
本发明提供的一种钢类线材酸洗工艺，生产工艺如下：The pickling process for steel wire rod provided by the present invention, the production process is as follows:
第一步，线材盘元；The first step is the wire coil;
第二步，初步伸线；The second step is the preliminary wire drawing;
第三步，进行热处理；The third step is heat treatment;
第四步，对酸洗池进行预热加温；The fourth step is to preheat the pickling tank;
第五步，输送线材进行酸洗，同时控制盐酸温度，持续保温在40℃；In the fifth step, the conveying wire is pickled, and the temperature of hydrochloric acid is controlled at the same time, and the temperature is kept at 40°C continuously;
第六步，酸洗完毕后进行磷皂化；In the sixth step, phosphorous saponification is carried out after the pickling is completed;
第七步，进行成品伸线。The seventh step is to draw the finished product.
进一步的，在第四步中，采用特氟龙加热管排进行加热，利用蒸汽降热盐酸。Further, in the fourth step, a Teflon heating tube row is used for heating, and steam is used to reduce the heat of the hydrochloric acid.
进一步的，在第五步中，利用温度传感器进行实时监控，保持盐酸温度在40℃。Further, in the fifth step, a temperature sensor is used for real-time monitoring, and the temperature of the hydrochloric acid is maintained at 40°C.
在盐酸加热至40℃±2时，在浓度、比重、铁离子等不变的情况下，原清洗时间可降低10％左右，原废弃周期在同等情况下维持恒温40℃±2，废弃周期可延迟20％左右。When the hydrochloric acid is heated to 40℃±2, the original cleaning time can be reduced by about 10% under the condition that the concentration, specific gravity, iron ion, etc. remain unchanged. The original waste cycle is maintained at a constant temperature of 40℃±2 under the same conditions, and the waste cycle can be The delay is about 20%.
本发明不局限于上述具体的实施方式，本领域的普通技术人员从The present invention is not limited to the above-mentioned specific embodiments, and those of ordinary skill in the art will learn from
上述构思出发，不经过创造性的劳动，所作出的种种变换，均落在本发明的保护范围之内。Starting from the above conception, all the changes made without creative work fall within the protection scope of the present invention.
Claims (3)
- 一种钢类线材酸洗工艺，其特征在于，生产工艺如下：A steel wire pickling process, which is characterized in that the production process is as follows:第一步，线材盘元；The first step is the wire coil;第二步，初步伸线；The second step is the preliminary wire drawing;第三步，进行热处理；The third step is heat treatment;第四步，对酸洗池进行预热加温；The fourth step is to preheat the pickling tank;第五步，输送线材进行酸洗，同时控制盐酸温度，持续保温在40℃；In the fifth step, the conveying wire is pickled, and the temperature of hydrochloric acid is controlled at the same time, and the temperature is kept at 40°C continuously;第六步，酸洗完毕后进行磷皂化；In the sixth step, phosphorous saponification is carried out after the pickling is completed;第七步，进行成品伸线。The seventh step is to draw the finished product.
- 根据权利要求1所述的一种钢类线材酸洗工艺，其特征在于，在第四步中，采用特氟龙加热管排进行加热，利用蒸汽降热盐酸。A steel wire pickling process according to claim 1, characterized in that, in the fourth step, a Teflon heating tube row is used for heating, and steam is used to reduce the heat of hydrochloric acid.
- 根据权利要求1所述的一种钢类线材酸洗工艺，其特征在于，在第五步中，利用温度传感器进行实时监控，保持盐酸温度在40℃。A steel wire pickling process according to claim 1, characterized in that, in the fifth step, a temperature sensor is used for real-time monitoring, and the temperature of the hydrochloric acid is maintained at 40°C.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010364771.4A CN111424283A (en) | 2020-04-30 | 2020-04-30 | Pickling process for steel wire |
| CN202010364771.4 | 2020-04-30 |
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| Publication Number | Publication Date |
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| WO2021217952A1 true WO2021217952A1 (en) | 2021-11-04 |
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| PCT/CN2020/108797 WO2021217952A1 (en) | 2020-04-30 | 2020-08-13 | Steel wire pickling process |
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| CN (1) | CN111424283A (en) |
| WO (1) | WO2021217952A1 (en) |
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| JP2000263229A (en) * | 1999-03-17 | 2000-09-26 | Nippon Steel Weld Prod & Eng Co Ltd | Production of steel wire for gas shield arc welding |
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| CN108913849A (en) * | 2018-06-29 | 2018-11-30 | 柳州市横阳机械有限公司 | A kind of processing method of tempered bead steel wire |
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| JPS5550468A (en) * | 1978-10-11 | 1980-04-12 | Kawasaki Steel Corp | Pickling method for cr base stainless steel |
| JPS5873777A (en) * | 1981-10-26 | 1983-05-04 | Kawasaki Steel Corp | Pickling method for stainless steel |
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| CN108085704B (en) * | 2017-11-01 | 2020-07-10 | 海盐哈特惠机械五金制品有限公司 | Wire acid pickling process |
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2020
- 2020-04-30 CN CN202010364771.4A patent/CN111424283A/en active Pending
- 2020-08-13 WO PCT/CN2020/108797 patent/WO2021217952A1/en active Application Filing
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| JP2000263229A (en) * | 1999-03-17 | 2000-09-26 | Nippon Steel Weld Prod & Eng Co Ltd | Production of steel wire for gas shield arc welding |
| CN101890439A (en) * | 2010-08-06 | 2010-11-24 | 天津润德中天钢管有限公司 | Manufacturing process of cold-drawing seamless pipe for vehicular wrapped gas bottle |
| CN102277586A (en) * | 2011-08-15 | 2011-12-14 | 贵州钢绳股份有限公司 | Process method for cleaning high-carbon steel wire with hydrochloric acid |
| JP2013237890A (en) * | 2012-05-14 | 2013-11-28 | Nippon Steel & Sumikin Welding Co Ltd | Pretreatment method for plating of steel wire for arc welding |
| JP2016132780A (en) * | 2015-01-15 | 2016-07-25 | 日本精工株式会社 | Acid cleaning method of steel wire material for bearing |
| CN206273840U (en) * | 2016-12-22 | 2017-06-23 | 宝钢集团南通线材制品有限公司 | A kind of external hydrochloric acid heating unit |
| CN109576623A (en) * | 2017-09-29 | 2019-04-05 | 高征 | A kind of wire galvanization method with good twisting property |
| CN108913849A (en) * | 2018-06-29 | 2018-11-30 | 柳州市横阳机械有限公司 | A kind of processing method of tempered bead steel wire |
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| CN111424283A (en) | 2020-07-17 |
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