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An industrialized fully continuous PVD production process for zinc-magnesium alloy coated steel strip

A technology of alloy coating and production process, which is applied in the direction of metal material coating process, coating, sputtering coating, etc., can solve the problems of poor production continuity and poor product uniformity, and achieve excellent corrosion resistance.

Active Publication Date: 2017-07-25
CHINA IRON & STEEL RES INST GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Usually, the PVD coating deposition is carried out in a closed vacuum chamber. The coating deposition is batch production, the production continuity is poor, and the uniformity of each batch of products is poor; due to the active chemical and electrochemical properties of magnesium, thermal There are great technical difficulties in plating or electroplating

Method used

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  • An industrialized fully continuous PVD production process for zinc-magnesium alloy coated steel strip
  • An industrialized fully continuous PVD production process for zinc-magnesium alloy coated steel strip
  • An industrialized fully continuous PVD production process for zinc-magnesium alloy coated steel strip

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Embodiment

[0066] By adopting the process of the invention, zinc-magnesium alloy coated steel strips are produced with hot-dip galvanized GI coating base strips (skinned and oiled, not passivated). The base belt is DX56D+Z (cold-rolled IF steel), the plate thickness is 0.8mm, and the double-sided galvanizing is 100g / m 2 , (about 7μm), Table 1 is the chemical composition of IF steel.

[0067] Table 1IF steel chemical composition (%wt.)

[0068]

[0069] The process conditions of sputtering magnesium are: substrate temperature Ts=110°C, working pressure P=0.10Pa, target power density 3w / cm 2 , the GI substrate is biased at -200V with a duty cycle of 50%. The annealing process conditions are: 415°C-10s annealing, and the post-treatment is to apply a 5 μm thick TOC coating. figure 2 XRD image of zinc-magnesium alloy coating annealed at 415°C-10s (Ts=110°C).

[0070] From figure 2 It can be seen that after alloying, the alloy phase is mainly located on the surface, interface and zin...

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Abstract

The present invention belongs to the field of coat plating in steel surface engineering, and relates to an industrialized whole continuous PVD production process of zinc magnesium alloy coating steel strip. The baseband of the zinc magnesium alloy coating steel strip is hot-dipped / electro-galvanized steel; a continuous PVD zone is arranged; in the zone, the steel strip enter into an inlet multi-stage differential pressure chamber (3); a baking degassing device (4) conducts vacuum degassing on the steel strip surface; a plasma bombardment device (5) conducts plasma bombardment on the steel strip surface; the steel strip enters into a DC magnetron sputtering unit (6), which is provided with a plurality of DC magnetron sputtering modules; the steel strip passes through an outlet multi-stage differential pressure chamber (7); the steel strip passing passed through to the continuous PVD zone is subjected to rapid diffusion annealing for 10-20s at 410-418 DEG C, so that zinc and magnesium generate reaction diffusion to obtain zinc magnesium alloy coating. The zinc magnesium alloy coating obtained by the whole continuous PVD production process provided by the invention has excellent corrosion resistance and comprehensive application performance.

Description

technical field [0001] The invention belongs to the field of coating and plating of steel strip surface engineering, and relates to an industrial atmosphere-to-atmosphere (referred to as "empty-to-empty") fully continuous PVD (Physical Vapor Deposition, PVD for short, physical vapor deposition) of a zinc-magnesium alloy coated steel strip. )Production Process. Background technique [0002] Zinc-magnesium alloy coating is considered to be the next-generation intelligent steel strip coating material in Europe. Zinc-magnesium alloy coated steel strip with the same thickness has significantly better corrosion resistance than hot-dip / electro-galvanized steel strip, and it can be used in trimming and coating The damaged part has excellent self-healing ability, and has good weldability, paintability and formability. It can be used in the fields of automobile, construction, home appliances and electric power. If the zinc-magnesium alloy coated steel strip is used to make the car bo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C14/35C23C14/16C23C14/56
Inventor 习中革张启富刘昕仲海峰陈斌锴江社明俞钢强
Owner CHINA IRON & STEEL RES INST GRP
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