Production method for low acid consumption and corrosion resistant hot-rolled pickling product

A hot-rolled pickling and production method technology, which is applied in the field of deep processing of ordinary hot-rolled flat products, can solve the problems of accelerating the diffusion of acid solution, increasing the energy consumption in the production process, etc., achieving low residual amount, shortening acid reaction time, and surface residual amount low effect

CN104128382AActive Publication Date: 2014-11-05WISDRI ENG & RES INC LTD
5 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2014-11-05

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention relates to a production method for a low acid consumption and corrosion resistant hot-rolled pickling product. The method specifically includes the steps of: performing uncoiling by an uncoiler; breaking and peeling oxides on a strip steel surface by a levelling machine; further breaking and peeling the oxides on the strip steel surface by a multi-roll straightener; clearing the shedding and loose oxides from the strip steel surface by a brushing device; carrying out pickling and rinsing on the treated strip steel; then clearing residue on the strip steel surface by a mechanical means; and performing reeling by a reeling machine. The technical scheme involved in the invention has the advantages that: 1. oxide cracks on the strip steel surface are numerous and have large gaps, thus facilitating fast penetration of an acid liquid, and the pickling efficiency is high; 2. at the same time of breaking phosphorus, part of the oxides can be removed, the pickling reaction dose is reduced, and the acid consumption is low; 3. after processing, the strip steel yield strength added value is low, and the strip properties are almost not affected; 4. leveling processing eliminates the yield platform of strip steel, and the formation of a Luders band on an ordinary hot-rolled product surface can be avoided; and 5. chlorine ion residue on the product surface is reduced, and the product has good corrosion resistance.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the field of deep processing of ordinary hot-rolled flat materials, and in particular relates to a production method of low-acid-consumption, corrosion-resistant, hot-rolled pickled products. Background technique

[0002] In the existing technology, such as figure 1 As shown, the traditional pickling unit consists of an uncoiler 1, an inlet looper 2, a tension leveler 3, pickling 4, a rinse 30, an exit looper 5, and a coiler 6. The tension leveler 3 is configured at the entrance for mechanical breaking Phosphorus, after the phosphorus is broken, the strip steel becomes a hot-rolled pickling product after pickling 4 and rinsing for 20 minutes. This production process has the following defects. The unsatisfactory phosphorus breaking effect leads to low pickling efficiency; Seriously, reduce the corrosion resistance of the product.

[0003] Such as figure 2 As shown, the main reason for the low efficiency and high acid consump...

Examples

Embodiment Construction

[0033] The specific embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0034] Such as Figure 4 , Figure 5 and Figure 6 As shown, a kind of production method of low-acid-consumption corrosion-resistant hot-rolled pickling product that the present invention relates to specifically comprises the following steps:

[0035] A. Uncoiler 1 uncoils;

[0036] B. The tempering machine 11 crushes and peels off the oxide 8 on the surface of the steel strip 7;

[0037] C. The multi-roller straightener 12 further breaks and peels off the oxide 8 on the surface of the strip 7;

[0038] D. the scrubbing roller 16 in the scrubbing device 15 removes the oxide 8 that comes off and loosens on the surface of the strip steel 7;

[0039] E. Pickling 4 and rinsing 30 the strip steel 7 after smoothing, straightening and scrubbing;

[0040] F. The strip steel 7 that has been pickled 4 enters the mechanical plate surfac...