WO2014139604A1

WO2014139604A1 - Metallic product finishing line

Info

Publication number: WO2014139604A1
Application number: PCT/EP2013/075037
Authority: WO
Inventors: Emmanuel Auger; Philippe Podda
Original assignee: Siemens Vai Metals Technologies Gmbh
Priority date: 2013-03-14
Filing date: 2013-11-29
Publication date: 2014-09-18
Also published as: PL2969389T3; CN105050769A; EP2969389B1; CN105050769B; EP2777877A1; ES2869949T3; EP2969389A1

Abstract

The present invention describes a finishing line for a metallic product comprising a stripping system (DECA), said system being positioned at a periphery of at least one product inlet or product outlet (1, 2) of at least one of the finishing devices making up the finishing line. In particular, said finishing line may provide a finishing line inlet that receives mixed products of oxidized or stripped type, said type being identified in order to switch the stripping system to a stripping activation or inactivation mode. Also, the stripping system may advantageously be free of acid, base or salts of acid or base dedicated to stripping. Finally, the finishing line according to the invention may make provision for the stripping system to comprise an interruptible stripping means based on at least one mechanical, vibratory or electromagnetic stripper such as an optical stripper.

Description

The present invention relates to a finishing line of a metal product according to the preamble of claim 1.

A finishing line of metal product (such as strips or scrolling plates) customary can receive at its entrance a mix of oxidized products or pickled, but do not transform the oxidation state of said products such as a line stripping would do it. Indeed, a skin pass mill or a planeuse of which are generally integrated equipment on the finishing line resorb only partially a layer of oxide of a product and can not replace a real process of complete stripping on a line s dedicating to it.

This is why, in the case of oxidation to be completely absorbed, stripping of an oxidized product is carried out in a pickling line that is distinct from the finishing line. For a company with a metal product finishing line (eg for planing operations, skin pass mill, shearing various - shorelines / lengths / etc -, slitting, inspection, winding / unwinding, reel division, etc.) , a stripping line installed complementarily to its finishing line involves a considerable additional cost and means winding / unwinding, transport logistics and operating considerable between the two lines. Said pickling lines generally comprise acid or base tanks dedicated to the pickling process and which are brought into contact with the product in scrolling in said bins. Even if these installations are performing at the level of quality and productivity, they remain expensive, of great size, particularly in terms of length and quite complex to exploit because their maintenance is not very conducive to the environment, expensive and potentially dangerous with regard to the chemical process used therefore implies complicated, expensive protection, treatment, storage and recycling measures.

Other lines and pickling methods include stripping means by mechanical, vibratory or optical abrasion. Several mechanical abrasion systems are known and described under KR20120074154A, US7601226B2, US8062095B2. A vibratory ultrasonic abrasion system is known and described by KR20030017013A. A laser abrasion system is known and described by EP0927595A1.

In all cases, it is necessary to transport the product of such stripping lines to a finishing line or vice versa, which implies a very heavy logistics and redundancies of coupling / winding and civil engineering means, an additional cost of term of exploitation, energy consumption and a decrease in productivity.

The aim of the present invention is to make it possible to simplify logistics and to minimize or even eliminate transit, storage and coupling installations between a finishing line and a pickling line, given that a finishing line does not have any on the other hand, there is no obligation to strip if the incoming product is stripped.

A metal product finishing line is thus proposed through the features of claim 1.

A set of subclaims also has advantages of the invention.

Starting from a finishing line of a metallic product, which can be either oxidized or partially or even completely etched such as a strip or a plate in course, the finishing line comprises:

- finishing equipment composing the finishing line;

a stripping system, said system being disposed at a periphery of least one input or output of the product of at least one of the finishing equipment composing the finishing line.

In this way, a finishing line operator can thus, for products having an obvious oxidation, allow his product to pass through the inserted and activated pickling system in the finish line so as to avoid the so-called problems of operation, logistics, transit, coupling of the aforementioned lines. In the case of product already stripped at the finish line entry, that is to say not requiring stripping, a simple bypass circuit or even a stopping of the active stripping function of the product in transit through the control system. stripping can be initiated.

For this purpose and knowing that a finishing line entry can receive mixed products of the oxidized or pickled type, said type can be identified in order to switch the pickling system in an activation or inactivation mode. Thus, it is advantageously possible to supply a finish line according to the invention with untracked products and to output a finished finished product downstream of the line by the means of the said line, that is to say with a pickled or unpeeled surface according to the request of the operator. In particular, a finishing line comprising a stripping system being free of acid, base or salts (salts of acid or base) dedicated to stripping is found to be a preferred embodiment, if this class of The stripping system includes an interruptible pickling means, such as systems based on at least one mechanical, vibratory or optical stripper. Indeed, unlike acid trays for example, such mechanical stripping systems, vibratory or optical present a start or a stop predictably and more quickly or instantaneously and are more compact and economical to be installed in insertion in a finishing line. Thus, if a strong mix of product oxidation type is fed into the finish line, the stripping system can be easily and frequently switched operationally according to the flexibility requirements related to a control book to produce, in mode active or inactive without a transitional phase linked to the flow of products entering or even stopping products of various types in successive scrolling. In this way, productivity can be greatly increased and the type of product processed by a single finishing line will be considerably extended, allowing a much greater and faster return on investment than on previously proposed finishing lines without pickling. For example, the pickling system can be activated or inactivated depending on information (by operator / file / recognition / etc.) on the oxidation state of the product at the beginning of the finishing line. , said information being delivered to a control module of the pickling system.

Advantageous provisions of the stripping system in a finishing line consists in arranging it downstream or upstream of a leveling equipment of a finishing line such as a decontamination pre-planer, a skin pass mill and / or a planeuse.

More generally, examples of finishing lines according to the invention provide that the finishing equipment (the stripping system is disposed at their periphery) correspond to at least one of the following installations:

- a skin pass mill installation adapted for coil to coil or coil plate,

- a cut-to-length installation with or without a skin pass,

- a coil splitting installation,

- an inspection facility,

- a leveling installation,

- a coil division plant,

- and / or shear shearing plant, etc.

The finishing line according to the invention provides that the pickling system is preferably free of acid, base or salts (acid or base salts) dedicated to pickling, ideally by a projection system on the product. a stripping compound such as by means of an abrasive solid material and, if necessary, a deputy liquid. In particular, the abrasive solid material may comprise cules and / or solid grains (such as metal shot, sand, etc.) and the liquid, if necessary, comprises at least water. The liquid may also or alternatively comprise at least one oxidation inhibitor. For such a stripping compound, the projection system on the product may then comprise at least one ejection turbine of the stripping compound. Alternatively, the product projection system may comprise at least one spray nozzle or nozzle / injector fed by the pressurized liquid and the abrasive solid material.

Said projection systems are arranged by local insertion in the finishing line at at least one single location or several successive locations, or even relocated around the initial finishing line equipment, so that their arrangement is as compact as possible so maintain the size of the minimum / original finish line. On the same principle of compact finishing line, the pickling system is free of acid, base or salts (acid or base salts) dedicated to pickling, ideally by at least one electromagnetic emission system such as in the optical field of laser radiation scanning by continuous vaporization impact product surface and / or electromagnetic radiation can also be generated by the effect of high power laser radiation as described in EP0927595A1. Such a system is very compact and can be easily inserted, disposed at many points of entry and / or exit of finishing equipment. High stripping power is achieved by multiplying the number of these highly compact stripping systems along the finishing line.

Also, the finish line according to the invention can provide that the pickling system is free of acid, base or salts (acid or base salts) dedicated to pickling, ideally by at least one generator vibratory system. ultrasonic waves acting in a suitable liquid tank such as water in which the product runs. Knowing that a finishing line allows a scrolling product (strip, plate, etc.) to reach scrolling speeds of at least 10Om / min, the stripping system, ideally free of acid, base or of salts (acid or base salts) dedicated to the stripping, inserted requires only a few meters in length and can also be inserted easily between the equipments of the finish line (unlike the acid tank of several tens of meters in a line of stripping scrolling comparable scroll speed).

Finally, the finishing line according to the invention provides that an introduction of an oxidation inhibitor on the pickling system can be activated, modulated or inactivated depending on information on the desired duration of maintenance of the the oxidation state of the product, such as a strip or a plate, coming out of the finishing line, said information being delivered to a control module of the pickling system.

Exemplary embodiments and applications related to the finish line according to the invention are provided using the figures described:

Figure 1 Finishing line including a skin pass mill installation in coil-to-reel production,

Figure 2 Finishing line including a skin pass mill installation and live planing in coil-to-coil or plate-coil production

Finishing line including a cut-to-length installation with an optional skin pass mill and planing with plate coil production, Figure 4 Finishing line including a slitting installation with coil-to-coil production planing, Figure 5 Finishing line including a coil-to-coil or plate-coil production inspection facility

Figure 6 Finishing line including a live planing system in coil-to-reel production,

Figure 7 Finishing line including a planing installation of sheet metal plates.

Mainly, for all the figures, examples of finishing lines of a moving metal product include:

a stripping system (DEÇA), said system being disposed at a periphery of at least one input or an outlet of the product (1, 2) of at least one of the finishing installations comprising the finishing line,

a finish line entry receiving mixed products of oxidized or pickled type,

the said type being identified in order to deliver an activation or inactivation signal of the pickling system.

the pickling system is ideally free of acid, base or salts (acid or base salts) and comprises an interruptible pickling means based on at least one mechanical or optical pickling agent.

All the equipment composing the finishing lines are not shown in detail in the following figures in order to give clear and simple examples of various main types of finishing lines required on the market according to the invention. Only the main equipment therefore appears, because the person skilled in the art knows that it is necessary to associate ancillary equipment such as, for example, preparations of coil tape heads, pinch rollers for belt drive, spinning, brushing, drying of Tape, waste disposal systems, feed trolley and output of reels and pack of plates, etc. In addition, the composition of equipment of the line may vary depending on the optional finishing types or not according to the wishes of the user. Figure 1 shows a finishing line comprising a skin pass mill (SPM) installation adapted for a coil-to-reel production transfer between the input and the line output. At the line input, the product (1) such as a metal strip is unwound on a roll-off machine (DER), then successively passes a pre-planer for head tape decoupling (PrPI), the skin pass mill (SPM), the stripping system (DEÇA) being ideally free of acid, base or salts (acid or base salts) dedicated to a stripping of the product, a shear cross section and sampling (CIS) and finally the product (2) transformed leaving the line is re-wound on a winder (BOB).

Figure 2 shows a finishing line comprising a skin pass mill (SPM) and live planing installation adapted for producing a coil to coil or plate coil transfer between the line input and the line output. At the line input, the product (1) such as a metal strip is uncoiled on a reel (DER) and then successively passes a pre-debonding planer (PrPI) of the tape head, the skin pass mill (SPM), optionally a stretcher under tension (PlaST), a shear of banks (CIS), the stripping system (DEÇA) being ideally free of acid, base or salts (salts of acid or base) dedicated to a stripping of the product , a cross-section shear (CIS), sampling and dividing coil or cutting plates to length and finally the product (2) transformed outgoing line is either re-wound on a winder (BOB) is stacked in packets of plates on a stacker (EMP).

In a simpler variant of FIG. 2, FIG. 3 shows a finishing line comprising an optional skin pass mill length cutter (SPM) suitable for producing a plate coil transfer between the inlet and the outlet. line. At the line input, the product (1) such as a metal strip is unwound on a unrolling machine (DER), then passes successively a precut pre-planer (PrPI) band head, optionally the skin pass mill (SPM) , a planing machine (Pla), the pickling system (DEÇA) being ideally free of acid, base or salts (acid or base salts), dedicated to a stripping of the product, a shear (CIS) cutting transversal length that cuts the plate strip (3), said plates being then stacked in packages on a stacker (EMP).

Figure 4 shows a finishing line including a slitting installation (REFD) of coils. At the line inlet, the product (1) such as a metal strip is unwound on a unrolling machine (DER) and successively passes a planer (Pla), a shear (CIS) cross-section, the stripping system (DEÇA) being ideally free of acid, base or salts (acid or base salts) dedicated to a stripping of the product, then a longitudinal strip slitter (REFD), a stripper (BOUC) adaptation of scrolling speed of the web, a belt tensioner (TENS) providing the web tension necessary for its re-winding of the product (2) on a winder (BOB).

Figure 5 shows a finish line inspection facility (INSP), comprising: at the line entry, the product (1) such as a metal strip which is unwound on a unrolling machine (DER) and then passes successively a planer (Pla), a shear shear (IRB), the stripping system (DEÇA) being ideally free of acid, base or salts (acid or base salts) dedicated to a stripping of the product, then a station inspection (INSP), a cross-sectional shear (CIS) and sampling and finally the product (2) transformed out of line is re-wound on a winder (BOB) or optional is stacked in packets of plates on a stacker (EMP), the plates being cut to length by the shears (CIS). Figure 6 shows a finish line including a leveling installation.

At the line inlet, the product (1) such as a metal strip is unwound on a unrolling machine (DER), then passes successively a pre-leveling machine (PrPla) of the tape head, a shear (CIS) a shear of transverse section, a welder (SOUD) of incoming band head continuity (1) with the tail of a previous strip running downstream, a planer under tension (PlaST), the stripping system (DEÇA) being ideally free of acid, base or salts (acid or base salts) dedicated to stripping of the product, a shear (CIS) of continuous strip division cross section, and finally the product (2)) transformed, leaving the line is re-wound on a winder (BOB). Figure 7 shows a finishing line comprising a planing installation of incoming plates (1 ') such as heavy plate for example. At the line inlet, the product (1 ') such as a strong metal plate, is moved over the entire line on roller table transfer means (TTR), then passes successively, a shear (CIS) in cross section, a planing machine (Pla), the pickling system (DEÇA) being ideally free of acid, base or salts (acid or base salts) dedicated to stripping the product, and is then discharged out of line per plate or stacked in packs of plates on a stacker (EMP). As an option, the line input can be connected to a shearing line (LCIS) dedicated to the formatting of cut-out motherboards by a set of cross-cutting and longitudinal cutting edges with respect to the direction of travel of the product. this shearing line replaces the simple shear (CIS) mentioned above.

Claims

claims

1. Finishing line of a metal product comprising a stripping system (DEÇA), said system being disposed at a periphery of at least one inlet or outlet of the product (1, 2) of at least one of the finishing equipment composing the finishing line.

2. finishing line according to claim 1 for which:

a finish line entry receiving mixed products of oxidized or pickled type,

the said type being identified in order to switch the stripping system under an activation or inactivation stripping mode.

3. finishing line according to claim 1 or 2 for which the pickling system is free of acid, base, or acid or base salts dedicated to pickling.

4. Finishing line according to one of the preceding claims wherein the stripping system comprises an interruptible pickling means based on at least one mechanical stripper, vibratory or electromagnetic such as optical.

5. finishing line according to one of the preceding claims wherein the stripping system is disposed downstream or upstream of a planing equipment of a finishing line such as a skin pass mill (SPM) and / or a planing machine (PrePI, Pla, PlaST).

6. finishing line according to claim 1 or 2 for which the finishing equipment corresponds to at least one of the following installations:

- a skin pass mill (SPM) installation adapted for coil to coil (2) or coil plate (3, EMP),

- a cutting system with length (EMP) with or without skin pass, - a slitting installation (REFD) of coils,

- an inspection facility (INSP),

- a leveling installation,

a coil division plant,

and / or a shearing plant.

7. finishing line according to one of the preceding claims for which the etching system is free of acid, base, or acid or base salts dedicated to pickling, ideally by a projection system on the product of a stripping compound such as by means of an abrasive solid material and, if necessary, a liquid.

8. finishing line according to claim 4 for which the solid material

abrasive material comprises particles and / or solid grains and the liquid, if necessary, comprises at least water.

9. finishing line according to claim 4 or 5 for which the liquid comprises at least one oxidation inhibitor.

10. Finishing line according to one of claims 4 to 7 for which a projection system on the product comprises at least one ejection turbine stripping compound.

1 1. Finishing line according to one of claims 4 to 7 for which a projection system on the product comprises at least one jet nozzle fed by the pressurized liquid and the abrasive solid material.

12. Finishing line according to one of the preceding claims for which the etching system is free of acid, base, or salts of acid or base dedicated to pickling, ideally by at least one laser system scanning by impact continuous product surface.

13. Finishing line according to one of the preceding claims for which the etching system is free of acid, base, or salts of acid or base dedicated to pickling, ideally by at least one ultrasonic wave generator system. sweeping on product surface.

14. finishing line according to one of the preceding claims wherein the scrolling product reaches scrolling speeds of at least up to 100m / min.

Finishing line according to one of the preceding claims for which an introduction of an oxidation inhibitor onto the pickling system can be activated, modulated or inactivated according to information on the desired duration of maintaining the oxidation-free state of the product, such as a strip or a plate, emerging from the finishing line, said information being delivered to a control module of the pickling system.