JP3892640B2 - Method for continuous shear deformation processing of metal plate and apparatus for the method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a processing method for continuously applying shear deformation to a long workpiece metal plate to form a shear deformation structure and / or a shear texture on the metal plate, and a long length for carrying out the method. The present invention relates to an apparatus for processing a metal sheet to be processed. Here, the metal plate means a thin plate having a thickness of about 10 mm or less wound in a coil shape.
[0002]
[Prior art]
It is known that the following Hall-Petch (Formula 1) relationship holds between the strength σ of the metal material and the crystal grain size d. σ = σo + ky (1 / √d) Formula 1 where σo and ky are material constants. That is, the strength of the material increases as the crystal grain size decreases. The strengthening of the metal material by refining crystal grains does not require the addition of an alloy element, and is therefore an advantageous method of strengthening the metal material from the viewpoint of recyclability. Therefore, attempts to reduce the crystal grain size to 1 μm or less, that is, research on ultra-miniaturization, has been actively conducted recently. Various methods of crystal grain ultrafine refinement have been proposed, but the most promising method for practical use is a method using high strain processing. However, when a normal plastic working method is used, the dimensions of the material change with deformation (the cross-sectional area becomes small), so there is a limit to the strain that can actually be reached. For example, in the case of rolling, since the plate thickness of the material decreases as the rolling reduction, that is, the degree of processing increases, further processing becomes impossible when the minimum plate thickness that can be rolled is reached. Therefore, there is a need for a new processing method that can introduce a large equivalent strain (ε) of at least 5 or more without changing the dimensions of the material.
[0003]
As such a processing method, there is an extrusion method using a die having a bent passage shown in FIG. 6, which is called an ECAE (Equal Channel Angular Extrusion) method or an ECAP (Equal Channel Angular Pressing) method. This method was originally invented as a texture control method by Segal et al. (See VMSegal: Mater. Sci. Eng., A271 (1999), 322, etc.), and then Valiev et al. [Phys. Stat. Sol., (A) 115 (1989), 451-457], Hotta et al. [Materia Vol. 37, No. 9 (1999), 767-774] have been proposed as a high strain processing method applied as a grain refinement method. Yes. This method is characterized in that simple shear deformation can be introduced without changing the cross-sectional area of the material, and a large equivalent strain (ε> 5) can be added by repeating this processing. At present, it has been confirmed that the aluminum alloy obtained by this method exhibits an extremely fine structure having a particle size of 1 μm or less and extremely high strength. However, since this ECAE method or ECAP method uses a piston, the length of the material to be processed is limited, and buckling tends to occur, so that a thin plate material cannot be processed. Therefore, the shearing method cannot be applied to continuous processing of a practical long material such as a coil material.
[0004]
As an attempt to solve this problem, Chakkingal et al. Proposed an ECAD (Equal Channel Angular Drawing) method, which is a drawing method using a similar die (U Chakkingal et al: Mater. Sci. Eng., A266 (1999)). 241-249). However, in the drawing process, thinning occurs and uniform shear deformation does not easily occur throughout the plate thickness, the applicable refraction angle θ has a mechanical limit, and the increase in the number of passes is the work hardening of the material, that is, ductility. It is practically impossible to add a large strain because it causes a decrease in the thickness and leads to breakage.
[0005]
By the way, there is a deep drawing method as a method for forming a metal product. This method is a processing method in which a thin plate is formed into a cup shape using a punch and a die, but the ratio of the maximum diameter and punch diameter of a material blank that can be processed without breaking by this method (limit drawing ratio) Depends on the deep drawability of the material. The deep drawability is better as the metal material (plate material) has a larger limit drawing ratio. This deep drawability depends on the ratio between the width strain and the thickness strain in the tensile test of a thin plate, that is, the r value (Lankford value). The larger the r value, the better the deep drawability. The r value of the metal plate has a strong correlation with the crystallographic texture of the plate. That is, in the case of cubic metal, the r value increases as the component of <111> // ND (ND is the normal direction of the plate surface) is stronger and as the component of <100> // ND is weaker.
[0006]
When face-centered cubic (FCC) metal sheets such as aluminum and copper are manufactured by a normal rolling-annealing process, a cubic texture (<100> // ND) develops and deep drawability is poor. . Therefore, it is known that if the shear texture is developed during rolling, the <111> // ND component will be strengthened and the <100> // ND component will be weakened to improve deep drawability. In this case, the shear texture is formed only on the surface layer of the material on which the frictional force acts from the roll. Therefore, recently, a method of actively developing a shear texture using asymmetric rolling such as single roll driven rolling or different peripheral speed rolling has been tried. However, it is extremely difficult to add a large shear deformation to the center of the plate thickness.
[0007]
Therefore, by continuously adding a large shear deformation to the center of the plate pressure to the metal plate material, a new texture can be developed to greatly improve the deep drawability of face centered cubic (FCC) metal. Development is desired. Furthermore, by forming a strong shear deformation structure and / or a strong shear texture, the crystal grains are refined to improve the strength and toughness, and / or at the same time, and / or the drawing processability and magnetic anisotropy are improved. Materials, in particular, materials produced through rolling processes such as steel, aluminum, aluminum alloys, copper and copper alloys, titanium and titanium alloys are desired.
[0008]
[Problems to be solved by the invention]
Accordingly, an object of the present invention is to form a strong shear deformation structure and / or a strong shear texture in a metal plate material to improve strength, toughness, and touch resistance, and / or excellent drawing workability and magnetic anisotropy. For producing a long structural metal material having a property and a device for carrying out the method, in particular, it is manufactured through a rolling process of steel, aluminum, aluminum alloy, copper and copper alloy, titanium and titanium alloy, etc. It is an object of the present invention to provide a method for producing a long material with improved properties and a device for carrying out the method. Since the principle of the formation of the desired shear deformation structure and the method of developing the shear texture is known as described in the prior art, the shear deformation forming such shear deformation structure and / or shear texture It is possible to solve the above problem by finding out how can be continuously applied to a long metal plate. Therefore, by modifying the technology of the conventional satellite mill, the function of generating a compressive force to advance the long metal plate material in the length direction is increased, and the means having the bent passage for imparting the shear deformation is formed in the long metal. By making it possible to use as a means for advancing the plate material, it has been found that the processing of the long metal plate material can be performed continuously, and the problems of the present invention can be solved.
[0009]
[Means for Solving the Problems]
The first aspect of the present invention is based on a configuration in which a plurality of small-diameter rolls are arranged along the peripheral surface of a large-diameter roll whose surface arranged at the center is roughened to a friction coefficient (μ) of 0.1 or more. A pressing force P for propelling the long metal plate PD [where √3 ktw>P> 2 kttan (θ / 2) (where k, t and w are the yield shear stress, thickness and width of the metal plate PD to be processed) Θ is arranged on the most downstream side by the feeding device of the metal plate material that generates an angle formed by a path refracted in a direction intersecting the tangential direction of the large diameter roll and the tangential direction). The metal plate material is advanced through a passage in a die having a uniform cross section in the traveling direction provided at the outlet of the small-diameter roll and forming a passage refracted in a direction intersecting the tangential direction of the large-diameter roll. To continuously apply shear deformation to the metal plate. By a method of processing a long workpiece metal plate material and forming a shear deformation tissue and / or shear texture of the metal sheet. Preferably, the passage in the die having a uniform section in the traveling direction and having a passage refracted in a direction intersecting the tangential direction of the large-diameter roll is refracted in a direction of 80 ° or less with respect to the tangential direction. The long processed metal plate material processing method is characterized in that it is arranged so as to prevent buckling of the long processed metal plate material that proceeds between a plurality of small diameter rolls. The guide shoe has a surface parallel to the peripheral surface of the large-diameter roll and is disposed with a distance of t × (1.05 to 1.20) of the metal plate material with respect to the surface of the large-diameter roll. Is disposed in the die, and more preferably, a uniform path in the advancing direction in which the long metal plate provided in the die advances. The cross section is in contact with the upper surface of the long workpiece metal sheet The method of processing a long processed metal sheet, characterized by being adjustable by a replaceable upper insert (UI) and / or a replaceable lower insert (LI) in contact with the lower surface of the long metal sheet. .
[0010]
The second aspect of the present invention is a large-diameter roll (CR) whose surface disposed in the center is roughened to a friction coefficient (μ) of 0.1 or more, a rough surface of the large-diameter roll, and a long metal plate A pressing force P that causes the metal plate to advance by frictional force with the PD [where √3 ktw>P> 2 kttan (θ / 2) (where k, t, and w are the yield shear stress and thickness of the metal plate PD to be processed) In order to generate a rolling force Q = P / μ for generating a refraction angle)], a gap smaller than the thickness of the long metal plate material PD is formed on the peripheral surface of the large-diameter roll. A plurality of small-diameter rolls (SR) provided and attached with elasticity, and a thickness t × (1.05 to 1.05) of the large-diameter roll circumferential surface disposed between the small-diameter rolls 1.20) Guide shoe (GS) having curved surfaces facing each other with a gap, and the small diameter An apparatus for continuously processing the metal plate by applying shear deformation to the metal plate made of a die disposed on the outlet side of the most downstream roll of the roll. The upstream end is substantially in contact with the peripheral surface, the curved surface facing the large-diameter roll peripheral surface with a gap of thickness t × (1.05-1.20) of the metal plate, and the curved surface and the corner radius are A cover (C) having a recess for forming a linear passage for allowing the continuous metal plate material to travel through a bent portion having a thickness t or less of the metal plate material, and a curved surface substantially in contact with the peripheral surface of the large-diameter roll The metal plate material having a thickness t × (1.05 to 1.20) in combination with a concave portion that forms a passage for the metal plate material of the cover to advance, which is bent and continuous with the upstream end portion of the curved surface. An cover having a convex portion that forms a gap through which the metal plate passes. A refraction angle θ formed by an upstream end portion of a curved surface that is substantially in contact with the circumferential surface of the large-diameter roll and a flat surface of the convex portion of the abutment that is bent with respect to the tangent line of the curved surface. Is arranged to be 80 ° or less, and thereby, the metal plate material passes through the passage bent at the refraction angle, so that shear deformation is formed to form a shear deformation structure and / or a shear texture. Is a processing apparatus for a long workpiece metal sheet. Preferably, the gap that becomes the passage through which the metal plate material to be processed passes is removable in the recess formed in the upper insert (UI) and the abutment made of wear-resistant material removably provided in the recess of the cover. The long work piece, characterized in that the gap is adjustable by a lower insert (LI) that is formed of a provided wear-resistant material and forms a convex part that partially fits into the concave part of the cover. It is a processing apparatus for a metal plate material, and more preferably, the surface of the long work metal plate material PD is provided on the surface of the small diameter roll (SR) and the surface of the guide shoe (GS) and the cover (C) with respect to the large diameter roll. A concave portion having a thickness t- (0.1 to 0.3) mm and a width w + (0.3 to 0.7) mm of the metal plate is formed. Long processing A processing apparatus genus plate.
[0011]
[Embodiments of the present invention]
The present invention will be described in more detail. A. The processing apparatus for a long workpiece metal plate that performs continuous shear deformation processing of the present invention has the configuration shown in FIG. Although based on a satellite mill rolling apparatus (FIG. 7), in order to ensure the extruding of a long workpiece metal sheet in the longitudinal direction, the surface of a large diameter roll is made of, for example, an SiC sandpaper having an average particle diameter of 65 μm. Thus, a device for polishing in the circumferential direction to roughen the surface is devised. In addition, a die (ECA die) is disposed at the outlet of the most downstream satellite roll so as to form a bent passage that imparts a shear deformation structure and / or a shear texture structure to the long workpiece metal sheet. Yes. Each small-diameter roll (satellite roll) does not have a rolling function (rolling rate <5%), and is substantially reduced by the rolling force applied by the small-diameter roll and the rough surface friction between the metal plate to be processed and the large-diameter roll surface. In particular, it has a function as a means for generating a pressing force for advancing the long workpiece metal plate material to the shear deformation applying means. As a mechanism for stably applying the reduction force, a conventionally used spring-type reduction device, hydraulic-type reduction device, or a combination of a rigid housing and a screw-type reduction device can be used.
[0012]
Incidentally, if the pressing force is P, it can be expressed as P = μQ (Equation 1). In Equation 1, μ is the coefficient of friction between the surface of the large-diameter roll and the metal plate to be processed, Q is the sum of the rolling forces (Q1, Q2,...) Of each small-diameter roll, that is, Q = Q1 + Q2 +. The friction between the rough surface large-diameter roll (CR) and the processed metal plate (PD) is large, and the small-diameter roll (satellite roll, SR has a smooth surface) and the processed metal plate (PD). It is assumed that the friction between is negligible. On the other hand, when the extrusion pressure required to allow the metal plate to be processed to pass through the bent portion in the die passage is Pe, it can be expressed as Pe = 2ktwtan (θ / 2) (Equation 2). In Equation 2, k, t, and w are the yield shear stress, thickness, and width of the workpiece metal sheet PD, and θ is the refraction angle. Equation 2 is derived on the assumption that there is no friction between the die passage and the workpiece metal plate. Accordingly, by adjusting the degree Q of the rough surface of the large-diameter roll and the total rolling force Q of the small-diameter roll in consideration of the yield shear stress k, thickness t and width w of the metal plate to be processed, the metal to be processed It is possible to generate a pressing force P that exceeds the extrusion pressure Pe required to pass the plate material through the bent portion in the die passage that imparts shear deformation. That is, the conditions under which extrusion can be performed can be expressed as P> Pe (Formula 3). On the other hand, in order for the metal plate to be processed to pass through the die passage, the metal plate must not be plastically deformed (compressed) before being refracted at the bent portion in the die passage. This condition can be expressed as P <√3 ktw (Formula 4). From Formula 2, Formula 3, and Formula 4, the pressing force P needs to satisfy √3ktw>P> 2ktwtan (θ / 2) (Formula 5). From Equation 5, θ <81.8 ° must be satisfied.
[0013]
B. Accordingly, a large diameter roll (CR) arranged at the center and a plurality of small diameter rolls (SR: satellite rolls) arranged along the peripheral surface of the large diameter roll can be used in the longitudinal direction of the long metal plate material to be processed. 5 is required to generate the pressing force satisfying 5 reliably and stably. Although not shown in the drawing, the small-diameter roll has a thickness t- (0.1 to 0.3) mm of the long metal plate and a width w + (0.3 of the long metal plate). It may be configured such that a recess having a width of .about.0.7) mm is formed so that the metal plate material can be stably advanced (no meandering or buckling occurs).
[0014]
C. Between each of the small diameter rolls, a guide shoe (GS) made of a material having wear resistance and seizure resistance is provided in order to prevent buckling of the workpiece metal plate. The guide shoe may be configured to be supported by a roll or roll chock using a spring (SP) that stably holds the guide shoe. In order to prevent buckling of the metal plate to be processed, the gap between the bottom surface of the guide shoe (the curved surface facing the large-diameter roll and in contact with the metal plate to be processed) and the peripheral surface of the large-diameter roll is the metal plate thickness t × (1. 05 to 1.20). Although not shown, the surface of the guide shoe with respect to the circumferential surface of the large-diameter roll has a depth t- (0.1 to 0.3 mm) of the long processed metal plate and the width of the metal plate. A recess having a width of w + (0.3 to 0.7) mm may be provided so that the metal plate material can be stably advanced (no meandering or buckling occurs).
[0015]
D. An example of the specific configuration of the dice is shown in FIG. The die is composed of a cover (C) and an abutment (AB), and a passage having an equal cross-sectional area through which the workpiece metal plate proceeds is formed by a recess formed in the lower center of the cover (C) and the abutment (AB). It is formed by a convex part that partially fits into the concave part of the cover at the upper center. The gap (depth) of the passage is a convex part that fits partly in the concave part formed in the cover (C) in the concave part of the upper insert (UI) and / or abutment that is removably attached to the concave part of the cover. by forming the removably mounted is wax ah insert (LI), it is adjusted to the thickness t × of the processed metal sheet (1.05 to 1.20). Since the UI and LI, especially the vicinity of the UI bent portion (corner portion), are easily rubbed and worn by the metal sheet to be processed, the tool material particularly excellent in wear resistance, such as cemented carbide, CVD surface treatment, etc. Made of tool steel. The processed metal plate material is suddenly changed in the traveling direction at the bent portion at the tip of the upper insert, and is extruded in the horizontal direction into the passage in the die. The smaller the corner radius of the bent portion, the better. However, it is acceptable up to the maximum thickness t of the metal plate to be processed. Further, the refraction angle θ of the die must be approximately 80 ° or less depending on the condition that the metal plate to be processed does not undergo plastic deformation between the most downstream small-diameter roll and the bent portion. In order to minimize the friction between the metal plate to be processed and the guide shoe and cover, and to prevent wear of the bent portion of the upper insert, a solid lubricant such as polytetra Fluoroethylene (Teflon) fine powder is designed to be supplied. Further, the metal plate material to be processed that passes through the passage of the die may be provided with a hole (LH) through which a liquid lubricant such as rolling oil can be supplied from the cover (C) to the surface of the metal plate material. (FIG. 2). Further, the surface of the cover (C) with respect to the peripheral surface of the large-diameter roll has a thickness t− (0.1 to 0.3) mm of the metal plate material to be processed and a width w + (0. A concave portion having a width of 3 to 0.7) mm is provided to realize a stable progress of the metal plate material.
[0016]
【Example】
The part where the metal plate material to be processed on the surface of the example is roughened to Rmax ≧ 1.5 μm by sandpaper (corresponding to a friction coefficient μ ≧ 0.1 when using rolling oil described later), a large diameter of 350 mm A processing device comprising four rolls, a small diameter roll having a diameter of 76 mm, and an ECA die shown in FIG. 2 having a refraction angle θ = 55 ° was used. As a material to be processed, an industrial pure aluminum annealing material JIS-A1100P-O having a thickness of 1 mm and a width of 20 mm was used. The yield shear stress in the first pass of the aluminum is approximately k = 60 MPa. The processing conditions are such that the peripheral speed of all the rolls is 1.3 m / min, and the friction coefficient between the plate material to be processed and the guide shoe and cover is made small. Fluoroethylene (NEW-TFE coat manufactured by Fine Chemical Japan Co., Ltd.) was sprayed. Further, non-ferrous rolling oil (CU-50) manufactured by Idemitsu Kosan Co., Ltd. was supplied as rolling oil to all roll surfaces, guide shoes and cover lubricating holes. The pressing force corresponding to the refraction angle θ is Pe = 2 ktwtan θ / 2 = 2 (60 MPa) (1 mm) (20 mm) tan 27.5 ° = 1.25 kN according to the equation 2. Therefore, the rolling force of each small-diameter roll was set to Q1 = 2 kN and Q2 = Q3 = Q4 = 4 kN. At this time, from Equation 1, the pressing force at this time is P = μ (Q1 + Q2 + Q3 + Q4) = 0.1 × (2 + 4 + 4 + 4) = 1.4 kN, which satisfies P> Pe in Equation 3. The rolling force Q was adjusted so as to satisfy Equation 3 in the same manner after the second pass. In this way, up to 4 passes were carried out. In order to uniformly introduce shear deformation in the thickness direction of the metal plate to be processed, the front and back sides and the front and rear ends of the metal plate to be processed were inverted every pass.
[0017]
Various characteristics of the processed metal sheet after the processing. The mechanical properties of the aluminum material before processing and after each pass processing were examined using an Instron type material testing machine IS-5OOO manufactured by Shimadzu Corporation. The size of the test piece was 1/10 the size of the JIS No. 5 test piece (parallel portion width 2.5 mm, distance between gauge points 4.5 mm). The tensile speed was 1.5 m / min. In order to investigate the in-plane anisotropy, the test piece was cut out with a wire electric discharge machine so that there were three types of angles of 0 °, 45 ° and 90 ° between the tensile direction and the rolling direction. Moreover, the structure of the metal plate after each pass processing was observed and photographed with an optical microscope, and the texture was measured with an X-ray diffractometer RAD-2B manufactured by Rigaku Corporation. At that time, Cu-Kα characteristic X-rays were used. As the texture, the ratio of the diffraction intensity of <111>, <100>, <110>, <311> // ND to the intensity of the non-directional standard sample, that is, the relative axial density, was obtained by chemical polishing with sodium hydroxide. It was measured over the entire plate thickness with decreasing thickness.
[0018]
3A to 3E show optical micrographs of a cross section perpendicular to the plate width direction of the metal plate before the test result processing and after each pass processing. Since the material is an annealed material, it exhibits equiaxed grains with a crystal grain size of about 30 μm. The processed material is a processed structure extending in a direction inclined with respect to the longitudinal direction (RD) except for the vicinity of the surface. This indicates that the desired shear deformation could be introduced into the material. In addition, it can be seen that the extending direction rotates in the longitudinal direction as the number of passes increases, and shear deformation is superimposed.
[0019]
FIG. 4 is a plot of the tensile strength and elongation of the metal plate before and after each pass processing obtained in the tensile test. Up to two passes, the strength increases and the elongation decreases, but it does not change much thereafter. The strength of the metal plate shows a strong anisotropy of a reverse V-shaped distribution having a high 45 ° direction, but the anisotropy decreases as the number of passes increases.
[0020]
FIG. 5 shows the transition of the axial density distribution. The horizontal axis in the figure is the relative position in the thickness direction of the metal plate, with the left end corresponding to the upper surface of each path and the right end corresponding to the lower surface. Since the metal plate material before the processing is an annealed material, the <100> // ND component (□ mark) is high throughout the thickness. After one pass, the component of <100> // ND is reduced compared to the metal plate material before processing, except for a part near the surface (indicated by ↑) on the upper surface side from the thickness center of the metal plate material. <111> // ND component (Δ mark) is increased. After two passes, the asymmetry of the axial density is improved by turning the metal plate upside down. As the number of passes increases, that is, as shear deformation increases, the <100> // ND component, which is harmful to deep drawability, decreases, while the <111> // ND component, which is effective in improving deep drawability, increases. Yes.
[0021]
As a modification of the device, a member (for example, a nip roll) for applying a tension may be provided on the outlet side of the die in order to ensure a certain advance of the long metal plate.
[0022]
By combining the processing apparatus of the present invention with an existing plastic processing apparatus such as rolling, (1) giving high strain processing, (2) refining crystal grains, (3) industrially useful physical properties (machine Texture, magnetic property, chemical property, etc.) can be controlled. In addition, when passing through this processing apparatus several times, it can be reversed, and the inversion method can be changed suitably and can be passed. Further, an appropriate heat treatment may be performed in the middle.
[0023]
【The invention's effect】
As described above, when the thin plate continuous shear deformation processing apparatus of the present invention is used, a crystal grain can be formed by forming a shear deformation structure and / or a shear texture without changing the size of a long metal plate material. As a result, the strength and toughness are improved, and a structural metal material having excellent drawing workability and magnetic anisotropy can be produced.
[Brief description of the drawings]
1 is an example of a thin plate continuous shear deformation processing apparatus according to the present invention. FIG. 2 is an example of a specific configuration of a die structure in FIG. 1. FIG. 3 is an aluminum material (a) before processing and the processing apparatus of FIG. The optical micrograph of the structure | tissue of the said material (b: 1 pass, c: 2 pass, d: 3 pass, e: 4 pass) after passing through.
FIG. 4 shows tensile strength and elongation characteristics of the material corresponding to (a) to (e) of FIG. 3. FIG. 5 shows material axial density distribution (X-ray) corresponding to (a) to (e) of FIG. diffraction)
[Fig. 6] Conventional batch type shear deformation processing device [Fig. 7] Prior art showing a satellite mill rolling device [Explanation of symbols]
CR Large-diameter roll SR Satellite roll GS Guide shoe SP Spring C Cover AB Abutment UI Upper insert LI Lower insert LH Lubrication hole PD Work material (long work metal plate)

Claims (7)

A feeding device having a configuration in which a plurality of small-diameter rolls (SR) are arranged along the peripheral surface of a large-diameter roll (CR) whose surface arranged at the center is roughened to a friction coefficient (μ) of 0.1 or more. Pressure P for advancing a long processed metal plate (PD) [where √3 ktw>P> 2 kttan (θ / 2) (where k, t and w are the yield shear stresses of the processed metal plate (PD)) The angle θ is the angle between the tangential direction of the passage refracted in the direction intersecting the tangential direction of the large-diameter roll and the refracted angle)). A passage in the die having a uniform cross section in the traveling direction provided at the outlet of the small-diameter roll disposed downstream and forming a passage refracted in a direction intersecting the tangential direction of the large-diameter roll; A metal plate is advanced and continuously sheared into the metal plate Method of processing a long workpiece metal plate material and forming a shear deformation tissue and / or shear texture into the sheet metal material by applying.  A passage in a die having a uniform cross section in the traveling direction and having a passage refracted in a direction intersecting the tangential direction of the large-diameter roll is refracted in a direction of 80 ° or less with respect to the tangential direction. 2. The method for processing a long metal plate material according to claim 1, wherein the metal plate material is disposed.  In order to prevent the buckling of the long processed metal plate that proceeds between a plurality of small-diameter rolls, it has a surface parallel to the circumferential surface of the large-diameter roll, and the thickness of the metal plate relative to the surface of the large-diameter roll 3. The method for processing a long metal plate material according to claim 1 or 2, wherein guide shoes installed at intervals of t * (1.05-1.20) are arranged.  The cross section of the passage that is uniform in the direction of travel of the long workpiece metal plate provided in the die has a replaceable upper insert (UI) that contacts the upper surface of the long workpiece metal plate and / or the length. 4. The method of processing a long metal plate material according to claim 1, wherein the metal plate material can be adjusted by a replaceable lower insert (LI) in contact with a lower surface of the metal plate material. Large diameter roll (CR) whose surface arranged at the center is roughened to a coefficient of friction (μ) of 0.1 or more, and the frictional force between the rough surface of the large diameter roll and the long metal plate (PD) The pressing force P that advances the metal plate material [where √3ktw>P> 2ktwtan (θ / 2) (where k, t, and w are the yield shear stress, thickness, and width of the metal plate material to be processed (PD)). In order to generate a rolling force Q = P / μ for generating a refraction angle)], a gap smaller than the thickness of the long metal plate PD is provided on the peripheral surface of the large-diameter roll, A plurality of small-diameter rolls (SR) attached with elasticity, and the thickness t × (1.05-1.1 of the metal plate material with respect to the peripheral surface of the large-diameter roll disposed between the small-diameter rolls. 20) A guide shoe (GS) having curved surfaces facing each other with a gap, and the small diameter low An apparatus for processing the metal plate by continuously applying shear deformation to the metal plate made of a die composed of an abutment and a cover, which is disposed on the outlet side of the most downstream roll of the steel plate. Inside, the upstream end is almost in contact with the peripheral surface of the most downstream small-diameter roll, and faces the peripheral surface of the large-diameter roll with a gap of thickness t × (1.05 to 1.20) of the metal plate. A cover (C) having a curved surface, and a concave portion forming a straight passage for allowing the metal plate material to travel continuously through a bent portion having a curved surface and a corner radius not greater than the thickness t of the metal plate material; A thickness t × (1) of the metal plate in cooperation with a curved surface that is substantially in contact with the peripheral surface, and a concave portion that forms a linear path that advances the metal plate of the cover that is bent and continuous with the upstream end of the curved surface that contacts the peripheral surface. .05 to 1.20) and a passage through which the metal plate material passes. The abutment (AB) having a convex portion that forms a gap, and the convex portion of the abutment that is bent and continuous with respect to the upstream end portion of the curved surface substantially in contact with the peripheral surface of the large-diameter roll and the tangent to the curved surface Are arranged so that the refraction angle θ formed with the flat surface of the metal plate is 80 ° or less, whereby the metal plate material passes through the passage bent at the refraction angle, thereby causing a shear deformation structure and / or a shear texture. An apparatus for processing a long processed metal sheet material, characterized by being provided with a shear deformation to form a film. The gap that becomes the passage through which the metal plate material to be processed passes is detachably provided in the recess formed in the abutment and the upper insert (UI) made of wear-resistant material provided in the recess in the cover. made wear-resistant material, the length of the placing serial to claim 5, characterized in that the gap by a row Lower insert (LI) to form a convex portion fitted portion in the recess of the cover is adjustable A processing device for shaved metal sheet materials.  On the surface of the small diameter roll (SR) and the surface of the guide shoe (GS) and the cover (C) with respect to the large diameter roll, the thickness t- (0.1 to 0.3) of the long metal plate PD is processed. A long processed metal according to claim 5 or 6, wherein a recess having a depth of mm and a width w + (0.3 to 0.7) mm of the metal plate is formed. Plate material processing equipment.

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