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Process for performing steel-strip film coating by using pulse laser evaporation ablation in vacuum

A pulsed laser, strip steel technology, applied in vacuum evaporation coating, metal material coating process, sputtering coating and other directions, can solve problems such as inability to meet, and achieve high production efficiency, good product quality, and fast response speed. Effect

Inactive Publication Date: 2009-10-28
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The main purpose of these systems is the intermittent coating treatment of small-area objects, and their system design cannot meet the requirements for continuous strip steel (uninterrupted operation for more than 1 week), air-to-air mode (substrate enters from the air) Vacuum system, then return to air

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Deposition of antibacterial TiO on 100mm wide stainless steel plate 2 film.

[0038] In the present embodiment, select the TiO that only contains pure anatase phase for use 2 As a target, TiO is deposited on the surface of stainless steel coils 2 plating.

[0039] Use a KrF excitation source laser with a wavelength of 248nm, a repetition rate of 10Hz, an incident angle of 45 degrees, and a vacuum degree of 3.5×10 -5 mbar. A laser can be placed on both sides of the steel plate, and a 100mm rectangular target can be used in the vacuum chamber.

[0040] The cold-rolled sheet passes through at 0.1mm / min, which can achieve 20nm anatase phase TiO2 coating. XRD analysis shows that the sample coating is pure anatase phase, which has good antibacterial properties. The error of thickness from the surface analyzed by ellipsometer is within 1%.

Embodiment 2

[0042] A wear-resistant Fe-V 10nm thick alloy coating was prepared on a stainless steel plate.

[0043]In this embodiment, a Fe-V alloy with a Fe content of 48% is selected as the target material, and Fe-V alloy with the same composition is deposited on the surface of the stainless steel coil to improve its wear resistance.

[0044] Use Nd:YAG laser with a wavelength of 532nm, a repetition rate of 10Hz, an incident angle of 45 degrees, and a vacuum degree of 3.5×10 -5 mbar; pulse interval is 10ns; laser energy is 5.3J / cm 2 . A laser can be placed on both sides of the steel plate, and a 100mm rectangular target can be used in the vacuum chamber.

[0045] The stainless steel passes through at 0.5m / min, which can realize the coating preparation of 10nm Fe-V alloy. EDX results show that the content of Fe on the surface varies between 43-58%, which is very similar to the composition of the target.

Embodiment 3

[0047] Preparation of stainless steel coatings on cold-rolled panels.

[0048] In this embodiment, block 304 stainless steel is selected as the target material, and a stainless steel coating with the same composition is deposited on the surface of the cold-rolled plate to improve corrosion resistance.

[0049] Use a pulsed ruby ​​laser with a wavelength of 694nm, a repetition rate of 5Hz, an incident angle of 45 degrees, and a vacuum of 3.5×10 -5 mbar; the pulse interval is 30ns; after the steel plate is preheated by the laser beam, it enters the pulse laser coating unit. Laser energy at 10J / cm 2 . A laser can be placed on both sides of the steel plate, and three sets of targets and lasers can be placed in the running direction of the steel strip to increase the coating speed.

[0050] The stainless steel passes through at 5m / min, which can realize the coating preparation of 30nm Fe-V alloy. EDX analysis shows that the surface is similar to the original target material. SE...

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Abstract

The invention discloses a process for performing steel-strip film coating by using pulse laser evaporation ablation in vacuum. The surface quality of a coil strip substrate material is at least at the 05 level; the coil strip enters a vacuum lock after being uncoiled, and the operation velocity of the steel strip is between 0.1 mm / min and 10 m / min; and the coil strip enters a pulse laser film coating unit, reactant gas or inert gas is led into the film coating unit so as to cause a laser beam to irradiate targets in a certain mode to produce target steam, and the film coating is performed when a steel plate passes through the area. The invention has environment-friendly process to realize a plurality of film coating products, rapid system response system and high control precision of a coating layer.

Description

technical field [0001] The invention relates to a steel strip coating process, in particular to a process for strip steel coating by using pulsed laser evaporation and ablation under vacuum. Background technique [0002] Existing strip steel coating technologies mainly include hot-dip galvanizing, electro-galvanizing, electro-tinning, color coating and other coating processes. It usually also includes chemical pretreatment and phosphating, passivation, anti-fingerprint coating and other pre- and post-treatment processes. [0003] In recent years, the market's demand for steel plates with better surface properties has been increasing. At the same time, users have higher and higher performance requirements for coated products. Users hope that coated products can not only meet corrosion resistance, environmental compatibility, excellent processability and surface optical properties, but also have decoration, graffiti resistance, easy cleaning, wear resistance, fingerprint resi...

Claims

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Application Information

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IPC IPC(8): C23C14/28C23C14/54
Inventor 杨立红
Owner BAOSHAN IRON & STEEL CO LTD
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