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Method for controlling thickness of Al-based alloy coating of plate strip

A coating thickness and base alloy technology, applied in the direction of rolling force/roll gap control, metal rolling, etc., can solve the problems of inability to customize production and meet the needs of coating thickness differentiation, and achieve low cost and good corrosion resistance Excellent performance and corrosion resistance

Pending Publication Date: 2022-03-25
苏州东宝海星金属材料科技有限公司
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Problems solved by technology

Due to the changing needs of downstream customers, upstream raw material manufacturers are often unable to customize production according to the needs of downstream customers, thus failing to meet the differentiated needs for controllable coating thickness

Method used

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  • Method for controlling thickness of Al-based alloy coating of plate strip
  • Method for controlling thickness of Al-based alloy coating of plate strip
  • Method for controlling thickness of Al-based alloy coating of plate strip

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Embodiment Construction

[0038] The present invention will be described in detail below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited by the accompanying drawings.

[0039] The method for controlling the thickness of the Al-based alloy coating of the plate and strip in the present invention uses the Al-based alloy coating coil of the plate and strip processed by the hot-dip plating process as a raw material, and the Al-based alloy coating of the plate and strip is divided into two layers, one layer is due to the metal Diffusion is a thin layer of alloy diffusion layer that exists at the interface, and the other layer is an Al alloy coating on the outer layer of the alloy diffusion layer, which specifically includes the following steps:

[0040] (1) Carry out raw material thickness design, and calculate the raw material thickness of the Al-based alloy coating coil of the upstream raw material manufacturer according to the final product ta...

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Abstract

The invention belongs to the technical field of rolling, and particularly relates to a method for controlling the thickness of an Al-based alloy coating of a plate strip, which comprises the following steps: by taking a plate strip Al-based alloy coating coil stock processed by a hot dipping process as a raw material, firstly, designing the thickness of the raw material, and then, carrying out single-pass or multi-pass cold rolling by adopting a single-stand or multi-stand cold rolling mill, and finally, slitting transverse shearing or roughness machining is carried out according to requirements. According to the method, the thickness of the Al-based alloy coating is controllable through rolling, and due to the fact that Al is a face-centered cubic lattice, the ductility of the Al-based alloy coating is good. The process has the advantages that the process is simple, the cost is low, the continuity and corrosion resistance of the Al-based alloy coating are not damaged, and the process is suitable for products which have strict requirements on the thickness of the coating and are insensitive to the hardening state of a matrix in the subsequent preparation process.

Description

technical field [0001] The invention belongs to the technical field of rolling, and in particular relates to a method for controlling the thickness of an Al-based alloy coating on a plate and strip. Background technique [0002] At present, the development of steel plate surface coating technology is changing with each passing day. Galvanized, tin-plated, Cr-plated, Al-plated plates, and galvanized aluminum-magnesium alloy steel strips have been effectively developed and applied. These coatings can effectively protect the matrix structure of steel plates and avoid damage during use. oxidation and corrosion. Taking galvanizing as an example, there are two existing steel strip coating processes: electroplating process and continuous hot-dip plating process. Among them, in the electrolytic galvanizing process, the steel plate is used as the cathode, and the zinc ions in the electrolyte are used as the anode, so that the zinc atoms are gradually deposited on the surface of the ...

Claims

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Application Information

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IPC IPC(8): B21B1/38B21B37/58
CPCB21B1/38B21B37/58B21B2001/383B21B2001/386
Inventor 张广基刘洪杰
Owner 苏州东宝海星金属材料科技有限公司
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