Method for improving rolled hard coiled strip steel surface reflectivity

A surface reflectivity and strip steel technology, applied in the field of cold-rolled pickling and rolling of hard-rolled strip steel, can solve the problem of low cleanliness, easy formation of zinc particles and zinc scars, and removal of residual oil and residue on the surface of cold-rolled strip steel. Solve problems such as lack of iron technology, achieve the effect of reducing surface residues, increasing reflectivity, and ensuring quality

Active Publication Date: 2020-04-17
马钢(合肥)钢铁有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In view of the low cleanliness of the existing strip surface, the lack of residual oil and residual iron technology on the cold-rolled strip surface, and the low reflectivity of the cold-rolled strip surface, it is easy to form defects such as zinc particles and zinc scars in subsequent galvanized products question

Method used

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  • Method for improving rolled hard coiled strip steel surface reflectivity
  • Method for improving rolled hard coiled strip steel surface reflectivity
  • Method for improving rolled hard coiled strip steel surface reflectivity

Examples

Experimental program
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Effect test

Embodiment 1

[0035] In this embodiment, the steel grade group arrangement plan is 2200 tons.

[0036] Rolling oil brand: Quakerol. Rolling oil type: MHS 1.0. The emulsion is obtained after the rolling oil is diluted. Rolling Oil Type: Non-ionic steady state rolling oil. The composition of rolling oil is shown in Table 1. The physical and chemical indicators of rolling oil are shown in Table 2.

[0037] Cleaning agent brand: Quakerol. The cleaning agent model is: CLEAN-1.0, and the parameters are shown in Table 3. Part of the process flow chart of the acid rolling unit in strip steel production is as follows figure 1 shown.

[0038] (1) The elongation setting value of the stretching and straightening phosphorus breaking machine is set according to the maximum value of 3%; the temperature of the pickling section is set at 80°C, and the three-stage pickling concentration control requirements are respectively 40 ± 20g / L, 120±20g / L and l60±20g / L; the rinse water temperature is set at 60...

Embodiment 2

[0045] In this embodiment, the steel grade group arrangement plan is 2200 tons.

[0046] Rolling oil brand: BONDERITE. Rolling oil type: L-RO 6021-HS. The emulsion is obtained after the rolling oil is diluted. Rolling Oil Type: Non-ionic steady state rolling oil. The composition of rolling oil is shown in Table 1. The physical and chemical indicators of rolling oil are shown in Table 2.

[0047] Cleaning agent brand: BONDERITE. The cleaning agent model is: L-AD 391, and the parameters are shown in Table 3. Part of the process flow chart of the acid rolling unit in strip steel production is as follows figure 1 shown.

[0048] (1) The elongation setting value of the stretching and straightening phosphorus breaking machine is set according to the maximum value of 3%; the temperature of the pickling section is set at 80°C, and the three-stage pickling concentration control requirements are respectively 40 ± 20g / L, 120±20g / L and l60±20g / L; the rinse water temperature is set...

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Abstract

The invention belongs to the technical field of cold rolling acid pickling rolling, and relates to a method for rolled hard coiled strip steel cold rolling acid pickling rolling. The method comprisesthe following steps that acid pickling is carried out, specifically strip steel is placed into an acid pickling tank for acid pickling; rinsing is carried out, specifically the strip steel is placed in a rinsing tank for rinsing; emulsification cleaning is carried out, specifically the strip steel is placed on a frame rolling machine for emulsifying and cleaning the strip steel to obtain cold hardcoiled strip steel, and degreasing cleaning is carried out, specifically a cleaning agent is added, and emulsion and the cleaning agent are pre-mixed to be used for strip steel cleaning, wherein thefinal volume concentration of the cleaning agent added in an emulsion tank S3 is 0.2%, and a partition plate is arranged between frame rolling machines. The surface reflectivity of the rolled hard coiled strip steel produced through the method can be stably controlled to be about 75%, and higher-quality raw materials are provided for production of subsequent galvanized steel materials and the like.

Description

technical field [0001] The invention relates to the technical field of cold-rolling and pickling rolling, and more specifically, relates to a method for cold-rolling and pickling-rolling of hard coil strips. Background technique [0002] The growth of computer, home appliances, and canning industry markets has promoted the rapid development of the galvanized sheet and strip industry. While the traditional galvanized sheet production process is developing, new production methods are also gradually developed in order to adapt to changes in customer demand for galvanized raw sheet product specifications (thinner specifications) and performance (stronger strength). Cold-rolled steel strip is used as raw material for hot-dip galvanizing, and its surface cleanliness directly affects the quality of subsequent galvanized products. If the surface cleanliness of the strip steel is low, galvanized products are likely to form defects such as zinc grains and zinc scars, so the surface c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B45/02C23G1/02C23G5/06
CPCB21B45/0269B21B45/0272C23G1/02C23G5/06
Inventor 屈博文胡平
Owner 马钢(合肥)钢铁有限责任公司
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