Method and apparatus for producing film-coated metal plate

Patent metadata

Field	Value
Publication number	US-11225054-B2
Application number	US-201716311942-A
Country	US
Kind code	B2
Filing date	Jun 23, 2017
Priority date	Jun 28, 2016
Publication date	Jan 18, 2022
Grant date	Jan 18, 2022

Abstract

Provided is a method for producing a film-coated metal plate, comprising the steps of: (1) pre-heating and soaking a metal plate; (2) laminating a film on the metal plate, with a deflector roller configured to be movable in a horizontal direction to adjust an angle α between the metal plate and a vertical direction; (3) cooling the metal plate; (4) compressing the metal plate to dry it; (5) reheating and post-processing the metal plate. A device for producing a film-coated metal plate is also provided, which comprises: an induction heating apparatus, a deflector roller ( 4 ) configured to be movable in a horizontal direction to adjust an angle α between the metal plate and a vertical direction, a thin film guide roller ( 6 ), a film-coating roller ( 7 ), a cooling apparatus ( 9 ), a compressing and drying roller ( 12 ), a reheating apparatus ( 14 ) and an air cooling apparatus ( 15 ).

First claim

What is claimed is:

1. A production method for a film-laminated metal plate, comprising:
(1) preheating and soaking a metal plate;
(2) laminating a film on the metal plate using film-laminating rolls, comprising controlling an angle β to be in a range of 30-70°, wherein said angle β is an angle between the film and a vertical direction, and the film enters a roll gap between film-laminating rolls at said angle β; controlling an angle α to be in a range of >0 to 20° with a deflector roll configured to be movable in a horizontal direction to adjust the angle α between the metal plate and a vertical direction, wherein the metal plate enters the roll gap at said angle α; and then laminating the film on the metal plate using the film-laminating rolls, while controlling a temperature of the film-laminating rolls to be in a range of 50-130° C.;
(3) cooling a surface of a resulting film-laminated metal plate rapidly to a temperature equal to or less than 50° C. at first by water spray cooling, followed by water quenching in a water quenching tank;
(4) squeezing the film-laminated metal plate to remove most water from the surface of the film-laminated metal plate; and
(5) heating the film-laminated metal plate to a temperature in the range of 50-130° C., holding for 5-40 s, and then air cooling the film-laminated metal plate to room temperature quickly.

2. The production method according to claim 1 , wherein there is a time interval of 0.5-5 s after step (2) and before step (3).

3. The production method according to claim 1 , wherein in step (1), the preheating increases a temperature of the metal plate to 60-80% of a target temperature of the metal plate, and the soaking increases the temperature of the metal plate to the target temperature.

4. The production method according to claim 1 , wherein the water spray cooling in step (3) is carried out at a cooling rate ≥150° C./s.

5. The production method according to claim 1 , wherein the air cooling in step (5) is carried out at a cooling rate ≥80° C./s.

6. The production method according to claim 1 , wherein α:β is 1:3-1:8 when the angle α is greater than 5 degrees in step (2).

Assignees

• Baoshan Iron & Steel

Inventors

• Li Peng
• Chen Hongxing
• Wang Zhangwei
• Ni Hua

Classifications

• B32B27/36

  comprising polyesters · CPC title

• B32B2307/714

  Inert, i.e. inert to chemical degradation, corrosion · CPC title

• B32B15/09 Primary

  comprising polyesters · CPC title

• B32B37/10

  characterised by the pressing technique, e.g. using action of vacuum or fluid pressure · CPC title

• B32B37/06

  characterised by the heating method · CPC title