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Pickling roll manufacturing process

A manufacturing process and pickling technology, which is applied in the field of metal material processing, can solve the problems of increasing process control difficulty, energy consumption, and long pickling roll manufacturing process, so as to reduce process complexity and production and processing energy consumption, and improve pickling Processing quality, effect of reducing energy consumption

Active Publication Date: 2020-10-13
浙江协和薄钢科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, this kind of process needs to go through multi-stage pickling process and multi-stage water washing process, which makes the entire manufacturing process of pickled rolls longer, which increases the difficulty of process control and the energy consumption in the process.

Method used

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  • Pickling roll manufacturing process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] A kind of pickling roll manufacturing process, its technological process is as figure 1 As shown, specifically include the following steps,

[0056] Uncoiling: Uncoil the hot-rolled steel coil through uncoiling equipment, and then straighten it to obtain straightened strip steel.

[0057] One-time pickling: pickling the pretreated straightened steel strip with pickling solution at 30°C, after pickling for 10 minutes, wash off the residual pickling solution with clean water.

[0058] Second pickling: pickling the pretreated straightened steel strip with pickling solution at 30°C, after pickling for 10 minutes, wash off the residual pickling solution with water; repeat the washing three times, the cleaning water temperature is 50°C , wash 10min each time.

[0059] Post-treatment: After drying the surface moisture of the straightened steel strip that has undergone first pickling and second pickling with hot air, spray anti-rust oil evenly on the surface of the straighten...

Embodiment 2

[0073] A kind of pickling roll manufacturing process, its technological process is as figure 1 As shown, specifically include the following steps,

[0074] Uncoiling: Uncoil the hot-rolled steel coil through uncoiling equipment, and then straighten it to obtain straightened strip steel.

[0075] One-time pickling: Pickling the pretreated straightened steel strip with pickling solution at 40°C, after pickling for 8 minutes, wash off the residual pickling solution with clean water.

[0076] Second pickling: pickling the pretreated straightened steel strip with pickling solution at 35°C, after pickling for 8 minutes, wash off the residual pickling solution with water; repeat the washing three times, the cleaning water temperature is 40°C , wash 12min each time.

[0077] Post-treatment: After drying the surface moisture of the straightened steel strip that has undergone first pickling and second pickling with hot air, spray anti-rust oil evenly on the surface of the straightened...

Embodiment 3

[0091] A kind of pickling roll manufacturing process, its technological process is as figure 1 As shown, specifically include the following steps,

[0092] Uncoiling: Uncoil the hot-rolled steel coil through uncoiling equipment, and then straighten it to obtain straightened strip steel.

[0093] One-time pickling: Pickling the pretreated straightened steel strip with pickling solution at 40°C, after pickling for 8 minutes, wash off the residual pickling solution with clean water.

[0094] Second pickling: pickling the pretreated straightened steel strip with pickling solution at 40°C, after pickling for 7 minutes, wash off the residual pickling solution with water; repeat the washing three times, the washing water temperature is 35°C , wash 13min each time.

[0095] Post-treatment: After drying the surface moisture of the straightened steel strip that has undergone first pickling and second pickling with hot air, spray anti-rust oil evenly on the surface of the straightened ...

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Abstract

The invention discloses a pickling coil preparation technology, and belongs to the technical field of metal material processing. According to points of the technical scheme, the preparation technologycomprises the following steps that uncoiling is conducted; primary pickling is conducted, specifically, a pickling solution is used for pickling for a preprocessed straightening steel strip at 30-50DEG C for 5-10min, and then residual pickling solution is cleared with clear water; secondary pickling is conducted, specifically, the pickling solution is used for pickling for the preprocessed straightening steel strip at 30-50 DEG C for 5-10min, and then residual pickling solution is cleared with clear water; and post-processing is conducted, specifically, moisture on the surface of the straightening steel strip sequentially subjected to primary acid pickling and secondary acid pickling is dried by hot air, and rust preventing oil is sprayed onto the surface of the straightening steel strip. According to the preferred scheme, after uncoiling, the preprocessing step is included before primary acid pickling, specifically, a preprocessing solution is used for soaking processing to the straightening steel strip at 15-30 DEG C for 15-30min, and then cold water clearing is conducted. The preparation technology has the advantages of being short in processing procedures, low in energy consumption, and high in pickling processing quality.

Description

technical field [0001] The invention relates to the technical field of metal material processing, more specifically, it relates to a pickling roll manufacturing process. Background technique [0002] Pickling is a very important process in the production process of cold-rolled strip steel. Its purpose is to remove the iron oxide on the surface of the strip steel, adjust the coil weight, cut off the cracked edge, and provide qualified billets for the rolling mill to ensure the smooth production of the cold-rolling mill. Qualified strip steel products. Among them, the push-pull pickling production line is a discontinuous pickling unit. Compared with the continuous pickling production line, it has the advantages of less investment, simple unit equipment, strong adaptability to strip steel varieties, simple operation, and easy maintenance. , suitable for small and medium cold rolling mills. [0003] In the whole push-pull pickling group, pickling treatment is more critical. F...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23G1/08C23G1/06
CPCC23G1/068C23G1/088
Inventor 谢建芳
Owner 浙江协和薄钢科技有限公司
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