WO2018030973A2

WO2018030973A2 - Copper-coated steel sheet production assembly and method

Info

Publication number: WO2018030973A2
Application number: PCT/TR2017/050379
Authority: WO
Inventors: Ekrem SOYLU
Original assignee: Net Boru Sanayi Ve Dis Ticaret Kollektif Sirketi Bora Saman Ve Ortagi
Priority date: 2016-08-08
Filing date: 2017-08-08
Publication date: 2018-02-15
Also published as: WO2018030973A3

Abstract

The invention relates to a method of production of a copper-coated steel sheet (50) having at least one electrolytic tank (60) in which the steel sheets (50) are coated with copper in producing copper-coated double-layered steel pipes. A production assembly comprises at least one cleaning container (10) in which a predefined amount of liquid and at least one ultrasonic probe (20) through which the steel sheet (50) passes before the electrolysis container (60) is provided.

Description

SPECIFICATION

COPPER-COATED STEEL SHEET PRODUCTION ASSEMBLY AND METHOD TECHNICAL FIELD

The invention relates to a method of producing a copper-coated steel sheet for use in producing copper-coated double-layered steel pipes and a production assembly for implementing this method.

THE PRIOR ART

In prior art, copper-coated double-layered steel pipes can be used as brake and fuel pipes in the automotive industry.

US2003041912 discloses a method of production of a pipe of copper-coated steel sheet. The surface of said copper-coated sheet is galvanized using a copper pyrophosphate coating solution. In CN2618025Y application, environmentally friendly, protective, consisting of a composite of steel and copper pipe is disclosed.

Copper coating process of steel sheets is done by conventional horizontal stepless systems. During the process, steel sheets are cleaned by entering into bath or bathes containing various chemicals. While the used chemicals determine the cleaning quality, the use of chemicals continuously increases the costs.

In TR200802945 application also discloses a process for copper coating steel sheets to be used in the production of copper-coated double-layer steel pipes. Said process includes these process steps; partial removal of the oil particles using an alkaline degreasing solution from the steel sheet, surface cleaning process using an electrolytic degreasing solution, removal of rust and / or oxides using acid solution, acid removal with water, subject to pre-coating process using a cyanide pre-coating solution, copper coating using cyanide copper coating solution and cyanide electrolysis system, removal of the coating solution with water, subject to lacquering process to increase its resistance to corrosion and hot air drying. BRIEF DESCRIPTION OF THE INVENTION

The object of the invention is to provide a copper-coated steel sheet production process in which the cleaning performance of copper-coated steel sheets is increased for use in the production of copper-coated double-layered steel pipes, and a production assembly for implementing this.

Another object of the invention is to provide a process for producing a copper-coated steel sheet in which the quality of the copper coating is enhanced and a production assembly for implementing this.

The present invention is a copper-coated steel sheet production assembly having at least one electrolytic tank in which steel sheets coated with copper for use in producing copper-coated double-layered steel pipes. Accordingly, that comprises at least one cleaning container in which there is a predefined amount of liquid and at least one ultrasonic probe through which the steel sheet passes before the electrolysis container. Thus, it is ensured that undesirable substances such as oil, dirt and rust on the steel sheet are separated from the steel sheet and therefore the steel sheet is cleaned.

A possible embodiment of the invention is the provision of a plurality of ultrasonic probes consecutively. Thus, it is possible to further clean the steel sheet as it passes through the cleaning container.

A possible embodiment of the invention is that the ultrasonic probe is substantially parallel to one side of the steel sheet. Thus, the waves generated by the ultrasonic probe can be efficiently delivered to the steel sheet. A possible embodiment of the invention is that it comprises at least one roll provided on both sides of the steel sheet to provide movement to steel sheet in a vertical position in the cleaning container. Thus, the steel sheet is allowed to move vertically. In this way, during the movement of the steel sheet in the cleaning container, it is prevented to remain the undesired materials separated from the steel sheet on the steel sheet surface. Therefore, as the steel sheet forwards, the waves come to a cleaner surface and it is possible to clean the remaining unwanted materials.

A possible embodiment of the invention is that, the ultrasonic probe is provided with at least one on both sides of the steel sheet. Thus, waves are sent from both sides of the steel sheet.

A possible embodiment of the invention is that, the steel sheet comprises at least one reflector positioned opposite to the face of the ultrasonic probe. Thus, it is possible to clean both sides of the steel sheet using fewer ultrasonic probes.

A possible embodiment of the invention is that the cleaning container comprises at least one sheet passage gap to allow passage of the steel sheet through it. Thus, the entrance and output of the steel sheet of the cleaning container can be provided.

A possible embodiment of the invention is that it comprises at least one sealing member provided in the sheet passage gap wall to prevent liquid passage between the sheet passage gap and the steel sheet. Thus, at least partially leakage of the liquid provided in the cleaning container is prevented.

A possible embodiment of the invention is that the ultrasonic probe comprises at least one joint lug to provide contact with the cleaning container. Thus, the ultrasonic probe can be fixed in the cleaning container. A possible embodiment of the invention is that the cleaning container contains at least one joint member to provide contact with the joint lug. In addition, another possible embodiment of the invention comprises at least one body provided with at least two stands connected to the inner surface of the cleaning container the joint member and a predetermined distance extending from said stands to a predetermined distance from the inner surface of the cleaning container. Thus, the ultrasonic probe can be mounted to the cleaning chamber with bolt-like mounting members and the cleaning chamber is prevented from being damaged by the mounting members. A possible embodiment of the invention is that at least one generator is associated with each ultrasonic probe. Thus, the wave generation of each ultrasonic probe is provided. A possible embodiment of the invention is that it comprises at least one joint pipe extending from the ultrasonic probe to the generator. Thus, the cables extending between the ultrasonic probe and the generator are passed through the joint pipe and are prevented from being affected by the liquid in the cleaning container. The present invention, to be used for production double-layered copper-coated steel tube, relates to a method of producing a copper-coated steel sheet having a step of copper coating of the steel sheets in an electrolytic tank. Accordingly, prior to the step of copper coating of the steel sheet in the electrolysis container, involves a cleaning step in a cleaning container containing a predetermined amount of liquid and at least one ultrasonic probe before the step.

A possible embodiment of the invention is a vertical position in the cleaning container, allowing the rolls being provided on both sides of the steel sheet. Thus, during the passing of the steel sheet in the cleaning container, unwanted materials separated on steel sheet are prevented from staying on steel sheet surface. Therefore, as the steel sheet passes, the waves come to a cleaner surface and it is possible to clean the remaining unwanted materials.

A possible embodiment of the invention is to clean the waves sent by ultrasonic probes located on both sides of the steel sheet. Thus, it is ensured that both sides of the steel sheet are effectively cleaned.

A possible embodiment of the invention is to clean the waves sent by the ultrasonic probes located on one side of the steel sheet with the waves transmitted by the at least one reflector reflecting the waves coming from the ultrasonic probes on the other side. Thus, it is possible to clean both sides of the steel sheet using fewer ultrasonic probes.

DESCRIPTION OF THE FIGURES Figure 1 a shows a top view of the copper-coated steel sheet production assemblys according to the invention. In figure 1 b, a top view of an alternative embodiment of the copper-coated steel sheet production assembly of the invention is given.

Figure 2 shows a sectional view of the cleaning container of the copper-coated steel sheet production assembly according to the invention.

DETAILED DESCRIPTION OF THE INVENTION

In this detailed description, a method of producing a copper-coated steel sheet (50) for use in the production of copper-coated double-layered steel pipes and a production assembly for implementing this method are described only as examples that will not have any limiting effect for better understanding of the subject matter.

Referring to Figures 1 a and 2; at least one cleaning pond (10) provided before the electrolytic tank (60) where the copper coating plating is performed on the steel sheet (50) in the inventive copper coated steel sheet (50) production facility. Steel sheets (50) pass through the rolls (40) and enter the cleaning container (10). There is at least one sheet passage gap (12) provided preferably in the opposite two walls of the cleaning container (10). The sheet passage gaps (12) are provided in a size through which the steel sheet (50) can pass. At least one sealing member (13) is provided in the wall of the sheet passage gap (12) to prevent liquid leakage from the periphery of the steel sheet (50) in the sheet passage gap (12).

The rolls (40) are positioned vertically such that they are a distance over which the steel sheet (50) can pass. In other words, the steel sheets (50) are positioned not vertically but horizontally, unlike the prior art. Accordingly, the steel sheet (50) passing between the rolls (40) having a distance of about the thickness of the steel sheet (50) is moved vertically. At least one ultrasonic probe (20) is located in the cleaning container(10). In addition, there is a predefined amount of liquid in the cleaning container pool (10). The said liquid may be water or a solution in which various additives are present. The ultrasonic probe (20) is positioned substantially parallel to at least one face of the steel sheet (50). In a possible embodiment of the invention, the ultrasonic probes (20) are provided on the two sides of the steel sheet (50) at least one. At least one joint lug (21 ) is provided on the ultrasonic probe (20) in order to connect the ultrasonic probe (20) to the cleaning container(10). The joint lug (21 ) substantially extends outwardly from at least one side edge of the ultrasonic probe (20). The joint lug (21 ) is preferably provided on the upper and lower sides of the ultrasonic probe (20). At least one joint member (1 1 ) is provided on the inner wall of the cleaning container(10) to provide contact with the ultrasonic probe (20). The joint member (1 1 ) has a bridgelike form. The joint member (1 1 ) with a detailed description has a body (1 12) extending between the two stand (1 1 1 ) and the stands (1 1 1 ) and having a predetermined distance from the inner surface of the cleaning container (10). The ultrasonic probe (20) is connected to the body (1 12) from the joint lugs (21 ). The engagement of the joint lugs (21 ) with the body (1 12) can be accomplished with boltlike mounting members. Due to the distance between the body (1 12) and the inner surface of the cleaning container (10), the mounting members are prevented from contacting and damaging the cleaning container (10). There is a generator (23) associated with each ultrasonic probe (20). The cables (not shown in figures) extending between the generator (23) and the ultrasonic probe (20) are located in at least one joint pipe (22), at least in the remaining part of the cleaning container (10). Said joint pipe (22) prevents liquid contact with wires. At least the portions of the joint pipes (22) and the ultrasonic probes (20) which are in contact with the liquid in the cleaning container (10) are preferably made of stainless material.

The steel sheet (50) entering the cleaning container (10) vertically through the rolls (40) is cleaned by the waves generated by the ultrasonic probe (20). Accordingly, the waves sent by the ultrasonic probe (20) provide bubbles in the liquid in the cleaning container (10). The resulting bubbles burst when they strike against the surface of the steel sheet (50), so that the unwanted materials on the steel sheet (50) are separated from the steel sheet (50). In other words, the ultrasonic waves ensure that the bonds between the undesirable materials and the steel sheet (50) and the bonds between the unwanted materials are broken. Thus, the unwanted materials on the steel sheet (50) are cleaned. Due to the fact that the steel sheet (50) is in a vertical position, the materials separated from the surface of the steel sheet (50) are moved away from the steel sheet (50) by the gravitational effect. In this way, it is possible to make a more effective cleaning. In an alternative embodiment of the invention, the steel sheet (50) can be provided in a horizontal position.

Each ultrasonic probe produces 1000 watts of ultrasonic power. In addition, there are 15 transducers and 30 piezoelectric crystals on each ultrasonic probe and operate at 28 kHz.

Referring to Figures 1 b; in another possible embodiment of the invention, the ultrasonic probe (20) is disposed on one side of the steel sheet (50) while at least one reflector (30) is provided on the other side. Thus, the waves generated by the ultrasonic probe (20) are reflected from the reflector (30) and reach the other face of the steel sheet (50). Thus, fewer ultrasonic probes (20) are used in the cleaning unit and the cost is reduced.

In the copper-coated steel sheet (50) production assembly of the invention, chemical cleaning containers (not shown) may be located before and / or after the cleaning container (10).

In one embodiment of the copper-coated steel sheet (50) production method with copper-coated steel sheet (50) production assembly of the invention, the steel sheet (50) is passed through a cleaning container (10) in which the ultrasonic probes (20) are located.

In another step of the copper-coated steel sheet (50) production method, the steel sheet (50), which is cleaned by ultrasonic waves in the cleaning container (10) is copper coated in the electrolysis container (60). The method of producing the copper coated steel sheet (50) may also be carried out before or after the step of passing the steel sheet (50) through the cleaning container (10) through at least one chemical cleaning container in which at least one chemical material is present. REFERANCE NUMBERS

10 Cleaning container

1 1 Joint member

1 1 1 Stand

1 12 Body

12 Sheet passage gap

13 Sealing member

20 Ultrasonic probe

21 Joint lug

22 Joint pipe

23 Generator

30 Reflector 40 Roll

50 Steel sheet

60 Electrolytic tank

Claims

CLAIM

1 . A copper-coated steel sheet (50) production assembly having at least one electrolytic tank (60) in which the steel sheets (50) are coated with copper for use in producing copper-coated double-layered steel pipes characterized in that; at least one cleaning container (10) is comprising a predefined amount of liquid and at least one ultrasonic probe (20) through which the steel sheet (50) passes before being fed to the electrolysis container.

2. A copper-coated steel sheet (50) production assembly according to Claim 1 , wherein the ultrasonic probes (20) are provided in multiple numbers one after other.

3. A copper-coated steel sheet (50) production assembly according to any one of the preceding claims, wherein the ultrasonic probe (20) is substantially parallel to one side of the steel sheet (50).

4. A copper-coated steel sheet (50) production assembly according to any one of the preceding claims, wherein it comprises at least one roll (40) provided on both sides of the steel sheet (50) to provide movement to steel sheet (50) in a vertical position in the cleaning container (10).

5. A copper-coated steel sheet (50) production assembly according to any one of the preceding claims, wherein the ultrasonic probe (20) is provided with at least one on both sides of the steel sheet (50).

6. A copper-coated steel sheet (50) production assembly according to any claim between 1 and 5, wherein the steel sheet (50) comprises at least one reflector (30) positioned opposite to the face of the ultrasonic probe (20).

7. A copper-coated steel sheet (50) production assembly according to any one of the preceding claims, wherein the cleaning container (10) comprises at least one sheet passage gap (12) to allow passage of the steel sheet (50) through it.

8. A copper-coated steel sheet (50) production assembly according to Claim 7, wherein it comprises at least one sealing member (13) provided in the sheet passage gap (12) wall to prevent liquid leakage between the sheet passage gap (12) and the steel sheet (50).

9. A copper-coated steel sheet (50) production assembly according to any one of the preceding claims, wherein the ultrasonic probe (20) comprises at least one joint lug (21 ) to provide contact with the cleaning container (10).

10. A copper-coated steel sheet (50) production assembly according to Claim 9, wherein the cleaning container (10) contains at least one joint member (1 1 ) to provide contact with the joint lug (21 ).

1 1 . A copper-coated steel sheet (50) production assembly according to Claim 10, wherein comprises at least one body (1 12) provided with at least two stands (1 1 1 ) connected to the inner surface of the cleaning container (10) the joint member (1 1 ) and a predetermined distance extending from said stands (111) to a predetermined distance from the inner surface of the cleaning container (10).

12. A copper-coated steel sheet (50) production assembly according to any one of the preceding claims, wherein at least one generator (23) is associated with each ultrasonic probe (20).

13. A copper-coated steel sheet (50) production assembly according to Claim 12, wherein it comprises at least one joint pipe (22) extending from the ultrasonic probe (20) to the generator (23).

14. A copper-covered steel sheet (50) production assembly having an electrolytic tank (60) in which the steel sheets (50) are coated with copper for use in producing copper-coated double-layered steel pipes wherein; prior to the step of copper coating of the steel sheet (50) in the electrolysis container (60), involves a cleaning step in a cleaning container (10) containing a predetermined amount of liquid and at least one ultrasonic probe (20) before the step.

15. A copper-coated steel sheet (50) production assembly according to Claim 14, wherein a vertical position in the cleaning container (10), allow rolls (40) being provided on both sides of the steel sheet (50).

16. A copper-coated steel sheet (50) production assembly according to Claim 14 or 15, wherein to clean the waves sent by ultrasonic probes (20) located on both sides of the steel sheet (50).

17. A copper-coated steel sheet (50) production assembly according to Claim 14 or 15, wherein to clean the waves sent by the ultrasonic probes (20) located on one side of the steel sheet (50) with the waves transmitted by the at least one reflector (30) reflecting the waves coming from the ultrasonic probes (20) on the other side.