CN111788017A

CN111788017A - Method for manufacturing metal thin strip coil and metal thin strip coil

Info

Publication number: CN111788017A
Application number: CN201980013292.3A
Authority: CN
Inventors: 冈本拓也; 伊佐俊宏
Original assignee: Hitachi Metals Ltd
Current assignee: Proterial Ltd
Priority date: 2018-02-16
Filing date: 2019-02-13
Publication date: 2020-10-16
Anticipated expiration: 2039-02-13
Also published as: PL3753643T3; SG11202007695YA; WO2019159970A1; JPWO2019159970A1; JP7248006B2; EP3753643A1; EP3753643B1; CN111788017B; EP3753643A4

Abstract

The invention provides a metal thin strip coil and a manufacturing method thereof, which can restrain the flaw or deformation when coiling the metal thin strip with thin plate thickness on a coiling ring, and restrain the manufacturing cost to be low, and the operation and maintenance are good. A method for manufacturing a metal thin strip coil, which includes winding a metal thin strip around a winding ring to obtain a metal thin strip coil, and winding a metal thin strip having a thickness of 0.3mm or less around the winding ring, wherein a high friction resistance material including a rubber strip is attached to at least a part of an outer peripheral surface of the winding ring.

Description

Method for manufacturing metal thin strip coil and metal thin strip coil

Technical Field

The present invention relates to a method for manufacturing a metal thin strip coil manufactured by winding a metal thin strip around a winding ring, and a metal thin strip coil.

Background

A metal thin plate (metal thin strip) rolled into a strip shape with a predetermined thickness by a rolling machine or the like is rarely used as a final product as it is, and is subjected to secondary processing such as press working, bending/drawing working, etching working, and the like, for example, and is molded into a final product in all industrial fields and then used. The metal strip is usually wound around an annular winding frame (hereinafter also referred to as a winding ring) and transported as a metal strip coil to a subsequent process. Typical methods for fixing the metal thin strip to the winding ring include: a method of directly attaching and fixing the tip end portion of the thin metal strip to the winding ring using a tape, a method of roughening the outer peripheral surface of the winding ring by knurling or shot blasting, a method of providing a slit groove in the winding ring and inserting the tip end portion of the thin metal strip, or the like.

Further, patent document 1 discloses a method of winding a steel strip, which includes: in order to reduce the folding-in of the tip end portion of the steel band (also referred to as providing a bend or a top mark), a rubber sleeve is used in which a substantially strip-shaped soft layer including an elastic body softer than the rubber sleeve body is provided in the outer circumferential longitudinal direction of the rubber sleeve (rubber sleeve), and the tip end portion of the steel band is positioned within the soft layer of the rubber sleeve. Patent document 2 discloses a long material winding frame having a metal cylinder as a core and a resin layer coated on the outer peripheral surface thereof, in order to wind a metal sheet in a coil shape without damaging the surface and without slipping.

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open No. Hei 7-16648

Patent document 2: japanese patent laid-open No. Hei 11-165955

Disclosure of Invention

Problems to be solved by the invention

Such a thin metal strip is naturally required to have a good surface quality so as not to cause a problem in secondary processing and to be usable as a leading end portion of a thin metal strip wound into a coil shape. However, in the conventional winding method, a flaw, deformation, or the like may occur in the innermost peripheral portion of the wound metal strip, and the metal strip may not be used up to the tip end portion. Such a flaw or deformation is likely to occur as the sheet becomes thinner, and in patent document 1, the sheet thickness of the example is also 0.8mm, and no study has been made on a thin metal strip having a sheet thickness of, for example, 0.3mm or less, and no proposal has been made on a method for suppressing the flaw or deformation occurring in the innermost peripheral portion of the metal strip wound into a coil shape. Further, even if there is a proposal, there is a problem that the structure and method become complicated as in patent document 2, which increases the manufacturing cost and deteriorates workability and maintainability.

The invention aims to provide a method for manufacturing a metal thin strip coil and a metal thin strip coil, which can restrain the scratch and the deformation when winding the metal thin strip with the thickness of 0.3mm or less on a winding ring, and can restrain the manufacturing cost to be low, and has good operation and maintenance.

Means for solving the problems

One embodiment of the present invention is a method of manufacturing a metal thin strip coil, in which a metal thin strip is wound around a winding ring to obtain a metal thin strip coil, and

a thin metal strip having a thickness of 0.3mm or less is wound around a winding ring,

wherein a high friction resistance material including a rubber tape is attached to at least a part of an outer peripheral surface of the winding ring.

The rubber tape preferably has a static friction coefficient of 3.0 or more.

Preferably, the rubber-made base material of the rubber tape comprises silicone rubber.

Preferably, the rubber tape has a rubber base material and an adhesive layer formed on one surface of the base material, and the rubber tape has a side to be attached to the winding ring on the adhesive layer side and a surface to be in contact with the metal thin tape as the rubber base material.

Preferably, the thickness of the rubber belt is 0.05 mm-0.5 mm.

Preferably, the thin metal strip is wound so that the periphery of the tip end portion of the thin metal strip contacts the rubber belt.

Another embodiment of the present invention is a metal strip coil, which is formed by winding a metal strip around a winding ring, and

the thickness of the metal thin strip is less than 0.3mm,

a high friction resistance material including a rubber tape is attached to at least a part of the outer peripheral surface of the winding ring.

The rubber tape preferably has a static friction coefficient of 3.0 or more.

Preferably, the thickness of the rubber belt is 0.05 mm-0.5 mm.

Preferably, a high friction resistance material including the rubber tape is attached to at least a part of an outer peripheral surface of the winding ring within a half circumference of the winding ring from a leading end portion of the thin metal strip at which winding is started.

ADVANTAGEOUS EFFECTS OF INVENTION

According to the present invention, when a metal strip having a thickness of 0.3mm or less is wound into a coil shape, it is possible to suppress the occurrence of scratches and deformation in the innermost periphery of the coil, suppress the manufacturing cost, and obtain a metal strip coil having good quality.

Drawings

Fig. 1 is a schematic side view for explaining the manufacturing method of the present invention.

Fig. 2 is an enlarged view of the front end periphery of the thin strip of fig. 1.

Detailed Description

Embodiments of the present invention will be described below.

The thickness of the thin metal strip to be used in the present embodiment is set to 0.3mm or less. By adjusting the thickness of the metal thin strip to the above range, the metal thin strip can be stably wound around the winding ring by the frictional force of the rubber strip described later. The thickness is preferably 0.2mm or less, more preferably 0.1mm or less. The lower limit is not particularly limited, but if the sheet thickness is extremely thin, the bending of the tip portion cannot be reduced, and the possibility of deformation of the metal strip becomes high, and therefore, the lower limit is preferably set to 0.03mm or more. When the thickness of the thin metal strip exceeds 0.3mm, the thin metal strip tends to be difficult to wind around the winding ring due to the elastic force of the thin metal strip depending on the material of the thin metal strip when the thin metal strip is wound around the winding ring to which the high friction resistance material is attached. The surface roughness of the metal strip is preferably set to 0.6 μm or less by the arithmetic average roughness Ra specified in Japanese Industrial Standards (JIS) -B-0601. If the surface roughness of the metal thin strip is too high, the contact area with the rubber strip is reduced, and the frictional force tends to be reduced. The lower the surface roughness, the larger the contact area with the rubber belt, the higher the friction force, and the effect of the invention tends to be exhibited more easily. Therefore, Ra is more preferably 0.3 μm or less, and still more preferably 0.2 μm or less. The lower limit of the surface roughness is not particularly limited, and Ra may be 0.001 μm or more, for example. The "metal" applicable in the present invention may be selected from steel such as carbon steel, stainless steel, and alloy steel, nonferrous metals such as aluminum, titanium, copper, and zinc, and alloys of these metals, as exemplified. The manufacturing method of the present invention may be applied to a material obtained by joining (pressure welding, brazing) a first metal and a different material other than the first metal.

In the present embodiment, a high friction resistance material including a rubber tape is attached to the outer peripheral surface of the winding ring (the surface on which the thin metal strip is wound). Fig. 1 is a schematic side view for explaining the manufacturing method of the present embodiment. As shown in fig. 1, in the present embodiment, a rubber ribbon 3 is attached to a winding ring 2, and a metal thin ribbon 1 is wound. The reason why the rubber tape is used in the present embodiment is that the metal thin tape to be wound is fixed by the frictional force of the rubber tape so as not to slip on the winding ring. Here, the rubber belt applicable to the present embodiment preferably has a static friction coefficient of 3.0 or more, and is used as a high friction resistance material. The static friction coefficient is more preferably 4.0 or more, and still more preferably 5.0 or more. The friction force of the rubber tape can be used to suppress generation of scratches caused by slipping of the metal thin tape, or bending (deformation) of the metal thin tape when the metal thin tape is wound around the winding ring. Further, the rubber tape is merely adhered to the outer peripheral surface of the winding ring without a complicated mechanism, and an effect of fixing the metal thin tape is obtained, so that the workability is excellent. Further, in terms of maintenance, the winding ring can be reused by replacing the rubber belt, and therefore, the winding ring can be used up to the tip end portion with good quality while suppressing an increase in cost. Further, since the fixing is performed by the frictional force of the rubber tape, the adhesive is not present on the surface where the metal thin strip contacts, and damage or etching failure of the stamper due to the adhesive remaining in the metal thin strip, or line trouble (line pipe) due to the metal thin strip not being detached from the winding ring can be prevented. The rubber tape used in the present embodiment can be applied to a generally used winding ring regardless of the material and surface roughness of the winding ring, as long as the winding ring is to which the rubber tape is attached. The present invention is particularly effective for a metal roll having no step or unevenness of a thin plate thickness or more to which the present invention is applied.

The rubber tape of the present embodiment has a base material made of rubber and an adhesive layer formed on one surface of the base material. As the material of the base material, natural rubber, nitrile rubber, fluorine rubber, urethane rubber, silicone rubber, or the like can be used as long as the static friction coefficient is satisfied. It is preferable to use silicone rubber which exhibits an adhesive effect without causing a slip defect or the like even if a metal thin strip is coated with a processing oil or a rust preventive oil, has a moderate elastic force to such an extent that the metal thin strip is not deformed, and can be obtained at low cost. Further, when a material other than a rubber tape such as paper, cloth, various plastic films (Polyethylene (PE), Polyethylene terephthalate (PET), Polyvinyl chloride (PVC), or a metal tape is used as a base material of the adhesive tape, the friction force with the metal tape is low, and the adhesive tape tends to slip.

The rubber tape used in the present embodiment is preferably set to a thickness of 0.5mm or less because the wound metal thin tape may be deformed if the tape thickness is too thick. More preferably 0.2mm or less, whereby the effect of suppressing deformation can be further improved. Further preferably 0.1mm or less. Further, it is preferable to set the thickness of the rubber tape to 0.05mm or more because sufficient rigidity can be given to the tape and the deformation resistance can be improved. Therefore, the tape thickness is preferably 0.05mm to 0.5 mm. The thickness of the strip may vary depending on the type of the material of the thin metal strip, and for example, in the case of a thin metal strip having high hardness (for example, 200HV or more), the thickness of the strip is preferably increased within a range of 0.05mm to 0.5mm (more than 0.2mm and 0.5mm or less). The rubber tape is preferably configured such that the adhesive is applied to the winding ring and the surface in contact with the thin metal tape contains rubber. Further, a composite tape or a self-fusible rubber tape using a film or the like as an intermediate layer may be used.

The length of the rubber tape used in the present embodiment in the width direction (corresponding to the width direction of the metal thin tape) can be appropriately adjusted according to the width of the metal thin tape to be wound. The rubber strip of the present embodiment exerts its effect by utilizing the frictional force regardless of the width of the metal strip to be wound, but may cause a tape mark depending on the material of the metal strip, and therefore, it is preferable to have a width as close as possible to the width of the metal strip to be wound. Specifically, when the width of the metal thin strip to be wound is set to Xmm, the effect of the present invention can be sufficiently exhibited if the length of the rubber strip in the width direction is set to 0.7Xmm to Xmm. Further, the lower limit of the width-direction length is preferably 0.8 Xmm.

The circumferential length of the rubber tape (corresponding to the longitudinal direction of the metal thin tape) in the present embodiment can be appropriately adjusted according to the size of the rubber tape or the type of material of the metal thin tape so as to be fixed by the frictional force generated at the contact surface between the rubber tape and the metal thin tape. On the other hand, when the rubber tape is adhered over the entire circumference of the winding ring, although the frictional force is sufficiently ensured, the restraining force for the thin metal tape may become excessively strong. Therefore, when the thin metal strip is provided on the winding ring, if the thin metal strip and the winding ring are slightly displaced in the width direction, the thin metal strip may be wound in a state where the width deviation of the innermost circumference cannot be corrected due to an excessively strong restraining force, and a winding failure or deformation may occur. Therefore, the length of the rubber tape is preferably set to less than 10% of the outer circumference of the winding ring. More preferably 5% or less, still more preferably 3% or less of the outer circumference of the ring.

In the present embodiment, it is preferable that the metal thin strip to be wound is wound while being adjusted so that the periphery of the leading end portion of the metal thin strip comes into contact with the rubber tape. Fig. 2 is a schematic view showing the vicinity of the tip of the thin metal strip according to the present embodiment. In fig. 2, a portion indicated by reference numeral 4 is a tip end portion of the thin metal strip of the present embodiment. The leading end portion of the thin metal strip is appropriately positioned close to the rubber strip, so that the bending resistance of the leading end portion can be improved, and the winding operation can be facilitated. Here, the periphery of the leading end of the thin metal strip indicates a range from the leading end of the thin metal strip wound around the winding ring (point P in fig. 1) to a position (point Q in fig. 1) that is advanced by half the outer periphery of the winding ring in the winding direction of the thin metal strip (direction R in fig. 1). That is, in fig. 1, arc PQ tracing the first metal strip in the R direction (clockwise direction) is "the periphery of the leading end of the metal strip", and is preferably arranged so that at least a part of arc PQ (the periphery of the leading end of the metal strip) contacts rubber strip 3. Thus, the metal strip coil can be produced by winding the metal strip adjusted to the predetermined thickness range, so that the flaw or the bend generated at the innermost circumference of the coil can be suppressed, the production cost can be suppressed, and the metal strip coil with good quality can be obtained. The position of the point Q is more preferably in the range from the point P to 1/4 cycles (90 °), and still more preferably in the range from the point P to 1/5 cycles (72 °). As described above, the rubber tape is in contact with the distal end portion of the thin metal strip, and the effects of the present invention can be exhibited, but it is more preferable to arrange the rubber tape so that the entire rubber tape is included in the periphery of the distal end portion.

Examples

(example 1)

The present invention will be described in more detail with reference to the following examples.

First, various kinds of tape materials shown in table 1 were prepared, the tapes were attached to the outer peripheral surface of a winding ring, a thin metal strip was wound around the winding ring, and winding evaluation was performed by observing the presence or absence of slippage of the thin metal strip. For the winding evaluation of each strip material, the strip size (0.1mm thickness. times.20 mm width), the winding ring (iron ring: outer circumference. phi.280 mm), and the thin metal strip to be wound (martensite stainless steel: 0.1mm thickness. times.25 mm width) were set. The strip was 20mm long, and the strip was wound around the winding ring so that the leading end of the strip was located 10mm away from the leading end of the thin metal strip to be wound in the winding direction (R direction in fig. 1). After the winding ring was installed in the winding apparatus, the metal thin strip was manually wound around two circles in advance, and the metal thin strip was wound around 30m with the set winding tension value set to 20N. Further, the static friction coefficient of each belt was measured in advance by a method in accordance with JIS-K-7125. The measurement results are also shown in Table 1. The results of the winding evaluation performed 3 times are shown in table 1. It was confirmed that, when the silicon ribbon as an example of the present invention was applied, no slippage occurred in all three times, and good winding was possible, and the effect obtained by the high friction resistance material was exhibited. In contrast, in the examples other than the present invention, slipping occurred three times, and the thin metal strip could not be fixed to the winding ring.

[ Table 1]

(example 2)

Next, using a silicon ribbon, the thickness of the ribbon, the material of the metal ribbon, the thickness of the metal ribbon, the presence or absence of rust preventive oil, the material of the winding loop, and the method of attaching the ribbon were changed, and conditions for winding the metal ribbon satisfactorily were confirmed. The arithmetic average roughness Ra of the metal strip was previously confirmed in accordance with the measurement method shown in JIS-B-0601 at an evaluation length of 4 mm. As a result, it was confirmed that all sheets had Ra of 0.6 μm or less. The length of the strip was set to 20mm, the above-described winding apparatus was used for winding, and after the winding ring was provided, the thin metal strip was manually wound around two circles in advance, and 4000m was wound with the set value of the winding tension set to 20N. As the evaluation, a winding evaluation for confirming the presence or absence of a slip and a quality evaluation for confirming the winding quality and whether or not a defect occurs in the metal strip at the innermost peripheral portion by rewinding the wound metal strip were performed. The conditions and the evaluation results are shown in table 2. Further, the hardness of each metal strip was measured in advance, and as a result, the stainless steel was 300HV, the iron-nickel (Fe-Ni) alloy was 190HV, and the copper (Cu) alloy was 160 HV. Further, the "tip end periphery" of the "sticking position" in table 2 indicates a position 10mm from the tip end of the thin metal strip to be wound, as in example 1, and the "position 180 ° from the tip end" of the sticking position in examples 2 to 17 of the present invention indicates a position which is advanced from the tip end of the thin metal strip by a length of half a circumference of the winding ring in the winding direction (R direction).

[ Table 2]

When the strip thickness was compared, the winding evaluation and the quality evaluation were good regardless of the material of the metal strip as shown in invention example 2-1 to invention example 2-5. In the case of the stainless steels of inventive examples 2 to 13, the winding evaluation and the quality evaluation were good even if the strip thickness was set to 0.4 mm. In the case of a metal thin strip having a hardness of 200HV or less as shown in invention examples 2 to 14 and invention examples 2 to 15, when the strip thickness was set to 0.4mm, winding was possible without slippage and winding evaluation was good, but unevenness of the strip occurred. From the results of other invention examples, it is thought that when the hardness is 200HV or less, the quality can be further improved by setting the thickness of the belt to 0.2mm or less.

The sheet thickness of the metal strip was good in the winding evaluation and the quality evaluation even for the products having a large sheet thickness as shown in invention examples 2 to 6 or the metal strips having a small sheet thickness as shown in invention examples 2 to 7 and invention examples 2 to 8. However, in comparative example 2-1, in which the thickness was 0.38mm, the elastic force of the metal strip was strong, and the metal strip repelled, and it was difficult to wind the metal strip.

The evaluation was also made on the metal strips having the rust preventive oil on the surface (inventive examples 2 to 9, inventive examples 2 to 10), and as a result, the winding evaluation and the quality evaluation were good even in the case where the rust preventive oil was present on the surface of the metal strips. In addition, in invention examples 2 to 11 and invention examples 2 to 12 in which the ring material was changed, a silicon tape was attached and the evaluation was good.

In the tape application methods, in inventive examples 2 to 16 in which the silicon tape was applied over the entire circumference, it was confirmed that winding could be performed well, and the tape application methods were improved as compared with comparative example 2 to 1. On the other hand, when the thin metal strip is wound, the width of the thin metal strip is shifted in the vicinity of the inner periphery. Then, the wound metal strip is rewound to confirm the metal strip on the innermost peripheral portion, and as a result, the metal strip on the inner periphery is deformed by the width deviation. Next, in the present invention examples 2-17 in which the tape sticking position was stuck at a position 180 ° from the tip end portion of the thin metal tape in the circumferential direction, it was confirmed that the winding could be performed well and the improvement was improved as compared with the comparative example 2-1, but the protrusion of the tip end portion occurred.

As described above, it was confirmed that the present invention can be applied to the production of a metal strip coil of a wide variety of materials, in which the scratch caused by the slip of the metal strip occurring in the innermost periphery of the coil can be prevented only by sticking the rubber tape to the outer peripheral surface of the coil ring without requiring a complicated structure, and the cushion property of the rubber tape can be utilized to suppress the installation and bending of the metal strip.

Description of the symbols

1: metal thin strip

2: coiling ring

3: rubber belt

4: front end of thin metal strip

Claims

1. A method for manufacturing a metal thin strip coil, wherein a metal thin strip coil is obtained by winding a metal thin strip around a winding ring, and

2. The method of manufacturing thin strip of metal coil as claimed in claim 1, wherein,

the static friction coefficient of the rubber belt is more than 3.0.

3. The method of manufacturing metallic thin strip coil of claim 1 or 2, wherein,

the rubber base material of the rubber belt comprises silicone rubber.

4. The method of manufacturing thin metal strip coil according to any one of claims 1 to 3, wherein,

the rubber belt is provided with a base material made of rubber and an adhesive layer formed on one surface of the base material, one side of the rubber belt attached to the winding ring is the adhesive layer side, and the surface of the rubber belt in contact with the metal thin belt is the rubber base material.

5. The method of manufacturing thin metal strip coil according to any one of claims 1 to 4, wherein,

the thickness of the rubber belt is 0.05 mm-0.5 mm.

6. The method of manufacturing thin metal strip coil according to any one of claims 1 to 5, wherein,

the metal thin strip is wound in such a manner that the periphery of the front end portion of the metal thin strip contacts the rubber belt.

7. A metal thin strip coiled material is formed by coiling a metal thin strip on a coiling ring, and

the thickness of the metal thin strip is less than 0.3mm,

8. The metallic thin strip coil of claim 7,

the static friction coefficient of the rubber belt is more than 3.0.

9. The metallic thin strip coil of claim 7 or 8,

the rubber base material of the rubber belt comprises silicone rubber.

10. The metallic thin strip coil of any one of claims 7 to 9,

11. The metallic thin strip coil of any one of claims 7 to 10,

the thickness of the rubber belt is 0.05 mm-0.5 mm.

12. The metallic thin strip coil of any one of claims 7 to 11,

a high friction resistance material including the rubber tape is attached to at least a part of an outer peripheral surface of the winding ring within a half circumference of the winding ring from a leading end portion of the thin metal strip at which winding is started.