JP6086483B2 - Magnesium alloy manufacturing apparatus and magnesium alloy manufacturing method used in the apparatus - Google Patents

Description

  The present invention relates to a magnesium alloy manufacturing apparatus and a magnesium alloy manufacturing method used in the apparatus.

  Since the magnesium alloy is lightweight, energy saving can be realized by using the magnesium alloy as a raw material for processing as compared with an iron-based material during processing. Magnesium is present in nature such as in seawater and has abundant resources. Furthermore, it is known that magnesium alloys are easier to recycle than plastics.

  Magnesium alloys are known to have low ductility at room temperature. This is due to the crystal structure of magnesium having a hexagonal close-packed structure. Therefore, a magnesium alloy having a desired shape is produced by casting or rolling with heating. For example, Patent Document 1 below describes a metal material manufacturing apparatus by casting.

JP 2007-237208 A JP 2010-116618 A JP 2011-121118 A

  When a magnesium alloy is produced by rolling, when the rolling process is repeated on the magnesium alloy, the magnesium crystals are oriented in a direction parallel to the rolling direction, and a strong bottom texture is formed. This strong bottom texture of the magnesium crystal is a factor that makes it difficult to deform the magnesium alloy. Therefore, there has been a problem of suppressing the formation of the bottom texture of the magnesium crystal and improving the workability and plastic workability.

  By the way, about the thick magnesium alloy, the multi-axis forging process is performed with respect to the subject mentioned above (for example, refer patent document 2, patent document 3, etc.).

  However, the multi-axis forging process described in Patent Document 2 and Patent Document 3 is not suitable for manufacturing a plate-like magnesium alloy.

  Therefore, the present invention has been made in view of the above-described problems, and its purpose is to suppress the formation of the bottom texture of the magnesium crystal, improve the plastic workability, and improve the mechanical properties. An object of the present invention is to provide a magnesium alloy manufacturing method and a magnesium alloy manufacturing method used in the apparatus.

A magnesium alloy manufacturing apparatus according to the present invention includes: a rolling mill that reciprocally rolls a magnesium alloy plate with a rolling roll ; a deformation processing unit that performs deformation processing for each pass of the magnesium alloy plate; and the magnesium alloy plate magnesium alloy sheet heating section for heating the magnesium alloy sheet before entering the rolling mill, a magnesium alloy manufacturing apparatus Ru wherein the deformation portion, the rolling mill end the magnesium alloy is placed in the A support roll that supports the plate, an adjustment roll that is installed on a side opposite to the support roll and the magnesium alloy plate, and is installed in an oblique direction away from the rolling mill than the support roll; the adjustment roll and the magnesium On the opposite side across the alloy plate, an induction roll installed in an oblique direction away from the rolling mill than the adjusting roll is provided. The magnesium alloy sheet rolled by the rolling mill is subjected to deformation processing when passing through the deformation processing portion, and a pair of deformation processing portions are opposed to each other across the rolling mill on both sides of the rolling mill. By being installed, the direction in which the magnesium alloy sheet is bent is different on both sides of the rolling mill .

Furthermore, the magnesium alloy manufacturing apparatus according to the present invention includes a rolling mill that reciprocally rolls a magnesium alloy plate with a rolling roll, a deformation processing unit that performs deformation processing for each pass of the magnesium alloy plate , and the magnesium alloy. a magnesium alloy manufacturing apparatus Ru and a magnesium alloy sheet heating section for heating the magnesium alloy sheet before the sheet enters the rolling mill, the deformation portion, the installed in an end of said rolling mill A support roll that supports the magnesium alloy plate, an adjustment roll that is installed on an opposite side across the support roll and the magnesium alloy plate in an oblique direction away from the rolling mill than the support roll, and the adjustment roll; On the opposite side across the magnesium alloy plate, an induction roll installed in an oblique direction away from the rolling mill than the adjustment roll , Wherein the magnesium alloy plate is rolled by the rolling machine, subjected to deformation as it passes through the deformation portion, the one end side of the rolling mill provided with a said deformation portion, of the rolling mill A reversing means for reversing the front and back of the magnesium alloy plate can be provided on the other end side.

Magnesium alloy production method according to the present invention, in the rolling mill magnesium alloy manufacturing methods used for reciprocating rolling by rolling rolls magnesium alloy sheet, deforming means for performing deformation processing on rolling 1 per pass with respect to the magnesium alloy plate However, the magnesium alloy plate is bent by the deformation processing means , the compressive stress acts on the inside of the curved surface of the magnesium alloy plate, and the outside of the curved surface of the magnesium alloy plate. In addition to acting on the tensile stress, the bent magnesium alloy plate is drawn into the rolling mill and stretched by reversing the rolling direction, and the surface outside the curved surface of the magnesium alloy plate is compressed. Stress acts, and tensile stress acts on the inner surface of the magnesium alloy plate. And it is characterized in and.

  According to the present invention, there is provided a magnesium alloy manufacturing apparatus and a magnesium alloy manufacturing method used in the apparatus capable of suppressing the formation of the bottom texture of the magnesium crystal, improving the plastic workability, and improving the mechanical properties. Will be able to provide.

  In addition, according to the present invention, it is possible to provide a magnesium alloy manufacturing apparatus that can add a larger deformation, improve the internal structure of the magnesium alloy plate, and refine the crystal grains.

It is a figure which shows the structural example of the magnesium alloy manufacturing apparatus which concerns on this embodiment. It is a figure which shows the force which acts when a magnesium alloy board is bent and extended by the deformation | transformation process means of the magnesium alloy manufacturing apparatus which concerns on this embodiment. It is a figure which shows the 1st Example of the magnesium alloy manufacturing apparatus which concerns on this invention. It is a figure which shows the force which acts when a magnesium alloy board is bent and extended by the magnesium alloy manufacturing apparatus which concerns on a 1st Example. It is a figure which shows the 2nd Example of the magnesium alloy manufacturing apparatus based on this invention. It is a figure which shows the force which acts when a magnesium alloy board is bent and extended by the magnesium alloy manufacturing apparatus which concerns on a 2nd Example. It is a figure which shows the 3rd Example of the magnesium alloy manufacturing apparatus which concerns on this invention. It is a figure which shows the specific example of the magnesium alloy heating part which the magnesium alloy manufacturing apparatus which concerns on a 3rd Example has. It is a figure which shows another example of a magnesium alloy heating part applicable to this invention.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments for carrying out the invention will be described with reference to the drawings. The following embodiments and examples do not limit the invention according to each claim, and all combinations of features described in the embodiments and examples are essential to the means for solving the invention. Not necessarily.

  FIG. 1 is a diagram illustrating a configuration example of a magnesium alloy manufacturing apparatus 10 according to the present embodiment.

  As shown in FIG. 1, a magnesium alloy manufacturing apparatus 10 according to the present embodiment includes a rolling mill 11 and a deformation processing unit 13 as deformation processing means. The deformation processing unit 13 includes a support roll 15, an adjustment roll 17, and a guide roll 19. The deformation processing means is not limited to the support roll 15, the adjustment roll 17, and the induction roll 19 as the deformation processing section 13, and any deformation processing means may be used as long as it can bend and stretch the magnesium alloy plate.

  The rolling mill 11 reciprocally rolls a magnesium alloy plate with a rolling roll 12.

  The support roll 15 is installed at the end of the rolling mill 11 and supports the magnesium alloy plate. And the adjustment roll 17 is installed in the other side which separated the support roll 15 and the magnesium alloy board.

  The adjustment roll 17 is for bending a magnesium alloy plate. When the adjusting roll 17 contacts the magnesium alloy plate and applies a force, the magnesium alloy plate is bent. The adjustment roll 17 is installed so that the distance from the support roll 15 and the guide roll 19 can be freely adjusted. And by changing the position of the adjustment roll 17, the curvature of the magnesium alloy plate to be bent can be changed.

  An induction roll 19 is installed on the opposite side across the adjustment roll 17 and the magnesium alloy plate. The induction roll 19 is for inducing a bent magnesium alloy plate by the adjusting roll 17.

  The configuration example of the magnesium alloy manufacturing apparatus 10 according to this embodiment has been described above. Next, the force which acts on a magnesium alloy plate by a deformation | transformation process means is demonstrated using FIG.

  FIG. 2 is a diagram showing forces acting when a magnesium alloy plate is bent and stretched by the deformation processing means of the magnesium alloy manufacturing apparatus 10 according to the present embodiment. 2, in the following description using FIG. 2, for convenience of explanation, the portion of the magnesium alloy plate that is first positioned above the magnesium alloy plate on the paper surface. Is denoted as A-side, and on the other hand, the portion of the magnesium alloy plate that is first located on the lower side of the magnesium alloy plate on the paper surface is denoted as B-side. In the following description using FIG. 2, the portion where the compressive stress is acting is represented by cross-hatching, and the portion where the tensile stress is acting is represented by whitening. .

  As shown in the partial diagram (b) of FIG. 2, for example, when the magnesium alloy plate is bent by receiving the force on the A surface of the magnesium alloy plate by the adjusting roll 17, the curved surface of the bent magnesium alloy plate is shown. Compressive stress (cross-hatched portion) acts on the inside, that is, the A surface, and tensile stress (white portion) acts on the outside of the curved surface of the bent magnesium alloy plate, that is, the B surface. .

  Here, when the magnesium alloy plate is squeezed, a compressive stress acts on the surface of the magnesium alloy plate. In general, many metal crystals have a close-packed structure, the magnesium alloy sheet is rolled down, and the texture of the manufactured magnesium alloy sheet is oriented parallel to the rolling direction and deformed in the thickness direction of the sheet. Is less likely to occur.

  However, as described above, by bending the magnesium alloy plate, a force acts on the B surface in the direction opposite to the direction of rolling down, and a shear stress can be applied.

  And, when extending the bent magnesium alloy plate with the rolling direction reversed, as shown in the partial diagram (c) of FIG. 2, the tensile stress acts on the A surface where the compressive stress was acting, On the other hand, the compressive stress acts on the B surface where the tensile stress was acting. Accordingly, as described above, a force in the direction opposite to that of the reduction is exerted on the A surface, and a shear stress can be applied.

  Therefore, as described above, by bending and stretching the magnesium alloy plate, compressive stress and tensile stress act, and a force opposite to that when it is crushed acts to impart shear stress to the magnesium crystal. be able to. In the magnesium alloy plate, the formation of the bottom texture of the magnesium crystal can be suppressed by applying a shear stress, that is, a shift force, to the magnesium crystal. Therefore, plastic workability can be improved and mechanical properties can be improved.

  That is, by bending and stretching the magnesium alloy plate by the deformation processing means, the formation of the bottom texture of the magnesium crystal can be suppressed, the plastic workability can be improved, and the mechanical properties can be improved.

  As described above, the force acting when the magnesium alloy sheet is bent and stretched by the magnesium alloy manufacturing apparatus 10 according to the present embodiment has been described. Next, the magnesium alloy manufacturing apparatus 20 of the first embodiment according to the present invention will be described. In addition, about the structure which is the same as that of embodiment mentioned above, or similar, the same code | symbol is attached | subjected and description is abbreviate | omitted.

[First embodiment]
FIG. 3 is a view showing a first embodiment of the magnesium alloy manufacturing apparatus according to the present invention. Moreover, FIG. 4 is a figure which shows the force which acts when a magnesium alloy board is bent and extended by the magnesium alloy manufacturing apparatus based on a 1st Example. In the following description using FIG. 3 and FIG. 4, for convenience of explanation, the left deformation processing means on the paper surface of FIG. The means is a deformation processing unit 23. In addition, this does not limit right and left, and may be installed in any position, such as up and down, left and right, and diagonally.

  As shown in FIG. 3, the magnesium alloy manufacturing apparatus 20 according to the first embodiment includes a rolling mill 11, a support roll 15 (25) as a deformation processing section 13 (23), an adjustment roll 17 (27), and an induction. Roll 19 (29).

  And the support rolls 15 and 25 as the deformation process parts 13 and 23, the adjustment rolls 17 and 27, and the induction | guidance | derivation rolls 19 and 29 are installed in the right and left of the both ends of the rolling mill 11, respectively.

  Here, FIG. 4 is a diagram showing the force acting when a magnesium alloy plate is bent and stretched by the magnesium alloy manufacturing apparatus 20 according to the first embodiment, but in FIG. 4, for convenience of explanation. For example, as shown in a partial diagram (a) in FIG. 4, the portion of the magnesium alloy plate that is first positioned on the upper side of the magnesium alloy plate on the paper surface is denoted as A surface, while the magnesium alloy is first displayed on the paper surface. A portion of the magnesium alloy plate located on the lower side of the plate is referred to as a B surface. The portion where the compressive stress is acting is represented by cross-hatching, and the portion where the tensile stress is acting is represented by whitening.

  First, a case where the rolling direction is set to the left side and the magnesium alloy plate is passed through the deformed portion 13 will be described. As described above, the magnesium alloy plate is bent by the adjusting roll 17, and compressive stress acts on the A surface and tensile stress acts on the B surface as shown in the partial diagram (b) in FIG. 4. Therefore, a force acts on the B surface in the direction opposite to that when rolling down, and a shear stress can be applied.

  Next, a case where the rolling direction is set to the right side and the magnesium alloy plate passes through the deformation processing portion 13 and passes through the rolling roll 12 and the deformation processing portion 23 will be described. That is, the bent magnesium alloy sheet passes through the deformed portion 13, passes through the rolling roll 12, and is stretched. As described above, when the bent magnesium alloy plate is stretched, as shown in the partial diagram (c) in FIG. 4, the tensile stress acts on the A surface where the compressive stress acts, The compressive stress acts on the B surface where the tensile stress was acting.

  Thereafter, the stretched magnesium alloy plate is bent by the adjusting roll 27. As shown in the partial diagram (d) in FIG. 4, compressive stress acts on the inside of the curved surface of the bent magnesium alloy plate, that is, the B surface, that is, the outside of the curved surface of the bent magnesium alloy plate, A tensile stress acts on the A surface. Therefore, a force acts on the A surface in the direction opposite to that when rolling down, and a shear stress can be applied.

  Furthermore, the case where the magnesium alloy plate is stretched with the rolling direction being the opposite left direction will be described. As shown in the partial diagram (e) in FIG. 4, tensile stress acts on the B surface where the compressive stress was applied, while compressive stress acts on the A surface where the tensile stress was applied. To do.

  Therefore, a force in the direction opposite to that when rolling down is exerted on the A surface and the B surface, so that shear stress can be applied, and formation of a bottom texture of magnesium crystals can be suppressed in the magnesium alloy plate. Therefore, plastic workability can be improved and mechanical properties can be improved.

  In addition, if the process mentioned above is repeated, the state of the partial diagram (b)-> partial diagram (c)-> partial diagram (d)-> partial diagram (e) in FIG. 4 will be repeated.

  The magnesium alloy manufacturing apparatus 20 according to the first embodiment has been described above. Next, the magnesium alloy manufacturing apparatus 30 according to the second embodiment will be described. In addition, about the structure which is the same as that of embodiment mentioned above, or similar, the same code | symbol is attached | subjected and description is abbreviate | omitted.

[Second Example]
FIG. 5 is a view showing a second embodiment of the magnesium alloy manufacturing apparatus according to the present invention.

  As shown in FIG. 5, the magnesium alloy manufacturing apparatus 30 according to the second embodiment includes a rolling mill 11, a support roll 15, an adjustment roll 17, an induction roll 19 as a deformation processing unit 13, a reversing unit 31, including.

  The reversing means 31 is for reversing the magnesium alloy plate.

  FIG. 6 is a diagram showing forces acting when a magnesium alloy plate is bent and stretched by the magnesium alloy manufacturing apparatus 30 according to the second embodiment. In FIG. 6, for convenience of explanation, for example, as shown in a partial diagram (a) in FIG. 6, the portion of the magnesium alloy plate that is first positioned on the upper side of the magnesium alloy plate on the paper surface is referred to as the A plane. On the other hand, the portion of the magnesium alloy plate that is first located on the lower side of the magnesium alloy plate on the paper surface is referred to as the B surface. The portion where the compressive stress is acting is represented by cross-hatching, and the portion where the tensile stress is acting is represented by whitening.

  First, the case where the rolling direction is set to the left side on the paper surface and the magnesium alloy plate is passed through the deformed portion 13 will be described. As described above, the magnesium alloy plate is bent by the adjusting roll 17, and compressive stress acts on the A surface and tensile stress acts on the B surface as shown in a partial diagram (b) in FIG. 6. Therefore, a force acts on the B surface in the direction opposite to that when rolling down, and a shear stress can be applied.

  Next, a case where the magnesium alloy plate is stretched with the rolling direction set to the right side on the paper surface will be described. The magnesium alloy plate passes through the deformed portion 13, passes through the rolling roll 12, and is stretched. As described above, when the bent magnesium alloy plate is stretched, as shown in the partial diagram (c) in FIG. 6, tensile stress acts on the A surface where compressive stress acts, The compressive stress acts on the B surface where the tensile stress was acting. Therefore, a force acts on the A surface in the direction opposite to that when rolling down, and a shear stress can be applied.

  Then, the stretched magnesium alloy plate is turned over by the reversing means 31 for reversing the magnesium alloy plate, and as shown in the partial diagram (d) in FIG. The lower side is the A plane.

  Thereafter, when the rolling direction is further leftward on the paper surface, the magnesium alloy sheet is rolled down by the rolling roll 12. The pressed magnesium alloy plate is bent by the adjusting roll 17, and compressive stress acts on the B surface and tensile stress acts on the A surface, as shown in a partial diagram (e) in FIG. 6.

  Further, when the rolling direction is opposite, that is, in the right direction on the paper surface, the bent magnesium alloy sheet passes through the deformed portion 13 and passes through the rolling roll 12 and is stretched. As shown in the partial diagram (f) in FIG. 6, tensile stress acts on the B surface where the compressive stress was applied, and compressive stress acts on the A surface where the tensile stress was applied.

  Then, the stretched magnesium alloy plate is further turned over by the reversing means 31, and as shown in the partial diagram (g) in FIG. 6, the upper side becomes the A plane on the paper surface, and the lower side becomes the B surface on the paper surface. . That is, it returns to the upper and lower positional relationship of the first magnesium alloy plate on the paper surface.

  With such a configuration, a force opposite to that when rolling down is applied to the A and B surfaces of the magnesium alloy plate, and shear stress can be applied. Therefore, in the magnesium alloy plate, the bottom surface of the magnesium crystal Formation of texture can be suppressed. Therefore, plastic workability can be improved and mechanical properties can be improved.

  In addition, if the above-mentioned process is repeated, the state of the fraction (b) → minute (c) → minute (d) → minute (e) → minute (f) → minute (g) in FIG. Will be repeated.

  The magnesium alloy manufacturing apparatus 30 according to the second embodiment has been described above. Next, a magnesium alloy manufacturing apparatus 40 according to a third embodiment of the present invention will be described. Here, FIG. 7 is a figure which shows the 3rd Example of the magnesium alloy manufacturing apparatus based on this invention. Moreover, FIG. 8 is a figure which shows the specific example of the magnesium alloy heating part which the magnesium alloy manufacturing apparatus concerning a 3rd Example has. In addition, about the structure which is the same as that of embodiment mentioned above, or similar, the same code | symbol is attached | subjected and description is abbreviate | omitted.

[Third embodiment]
The magnesium alloy manufacturing apparatus 40 according to the third embodiment includes a rolling mill 11, a support roll 15, an adjustment roll 17, an induction roll 19, and a magnesium alloy heating unit 41 as the deformation processing unit 13.

  The magnesium alloy heating unit 41 is for rapidly heating the magnesium alloy plate. For example, it is preferable to use an induction heating coil 43 as exemplified in FIG.

  The heating coil 43 as the magnesium alloy heating unit 41 is installed in the vicinity of one surface side (for example, the upper surface side) of the magnesium alloy plate. The heating coil 43 is installed in the vicinity of the rolling mill 11. The magnesium alloy plate is heated by the magnesium alloy heating unit 41 immediately before entering the rolling mill 11.

  By heating the magnesium alloy plate, the deformation performance of the magnesium alloy plate deformed by the deformation processing portion 13 can be improved by the temperature rising effect, and deformation can be applied more greatly. Therefore, the internal structure of the magnesium alloy plate can be improved and the crystal grains can be refined.

  The magnesium alloy manufacturing apparatus 40 according to the third embodiment has been described above.

  In addition, about the specific manufacturing conditions of a rolled product, in the range which does not deviate from the claim showing the present invention, it can select and change suitably. Further, it is apparent from the scope of the claims that embodiments with such changes or improvements can also be included in the technical scope of the present invention.

  For example, about the magnesium alloy heating part 41 which concerns on a 3rd Example, only the one surface side (upper surface side) of a magnesium alloy plate was heated. However, the magnesium alloy heating part according to the present invention is not limited to such a form. For example, as shown in FIG. 9, a magnesium alloy heating unit having a heating coil 53 installed so as to be substantially U-shaped with the magnesium alloy plate interposed therebetween so that the magnesium alloy plate can be heated from both sides. You may comprise as 51.

  Moreover, you may comprise so that both upper and lower surfaces of a magnesium alloy board may be heated by making the rolling roll 12 itself into a heating roll, or installing a heating roll before and behind the rolling roll 12. In addition, about this heating roll, for example, the roll itself has a heat generating device so that the roll surface is heated and the temperature of the member in contact with the roll surface is increased. Accordingly, the magnesium alloy plate can be heated by the heating roll sandwiching the magnesium alloy plate.

  Furthermore, about the magnesium alloy heating part 41 which concerns on a 3rd Example, it is good also as a structure which provides a heating furnace. As a heating method of the heating furnace, a gas furnace, an electric furnace or the like can be adopted.

  Further, the magnesium alloy heating unit 41 according to the third embodiment described above was installed on the opposite side of the rolling mill 11 from the deformation processing unit 13 installation side, but the magnesium alloy applied to the present invention. About the installation position of a heating part, what kind of position may be sufficient. For example, a magnesium alloy heating part may be installed between passing through the rolling mill 11 and being bent by the deformation processing part 13, or by adopting a heating roll, the magnesium alloy heating part is placed at the position of the rolling mill 11. It may be provided.

  Further, the rolling mill 11 of the above-described embodiment has been described with simplification of illustration, but for example, other auxiliary equipment such as a feeding device for inserting a magnesium alloy plate into the rolling mill 11 may be provided. Good.

  Furthermore, since the magnesium alloy plate in a curved state is inserted into the rolling mill 11 of the above-described embodiment, an apparatus for suitably inserting the magnesium alloy plate into the rolling mill 11, for example, a leveler or the like Equipment can also be provided.

  10, 20, 30, 40 Magnesium alloy production apparatus, 11 rolling mill, 12 rolling roll, 13, 23 deformation processing section, 15, 25 support roll, 17, 27 adjustment roll, 19, 29 induction roll, 31 reversing means, 41 , 51 Magnesium alloy heating part, 43, 53 Heating coil.

Claims (3)

A rolling mill for reciprocally rolling a magnesium alloy sheet with a rolling roll;
A deformation processing portion for performing deformation processing for each pass of rolling with respect to the magnesium alloy plate;
A magnesium alloy plate heating section for heating the magnesium alloy plate before the magnesium alloy plate enters the rolling mill;
A magnesium alloy manufacturing apparatus Ru provided with,
The deformation processing part is
A support roll installed at the end of the rolling mill to support the magnesium alloy plate;
On the opposite side across the support roll and the magnesium alloy plate, an adjustment roll installed in an oblique direction away from the rolling mill than the support roll;
On the opposite side across the adjustment roll and the magnesium alloy plate, an induction roll installed in an oblique direction away from the rolling mill than the adjustment roll,
With
The magnesium alloy plate rolled by the rolling mill undergoes deformation processing when passing through the deformation processing portion,
A pair of the deformed portions are installed on both sides of the rolling mill so as to face each other across the rolling mill, whereby the direction in which the magnesium alloy plate is bent on both sides of the rolling mill is different. Magnesium alloy production equipment. A rolling mill for reciprocally rolling a magnesium alloy sheet with a rolling roll;
A deformation processing portion for performing deformation processing for each pass of rolling with respect to the magnesium alloy plate;
A magnesium alloy plate heating section for heating the magnesium alloy plate before the magnesium alloy plate enters the rolling mill;
A magnesium alloy manufacturing apparatus Ru provided with,
The deformation processing part is
A support roll installed at the end of the rolling mill to support the magnesium alloy plate;
On the opposite side across the support roll and the magnesium alloy plate, an adjustment roll installed in an oblique direction away from the rolling mill than the support roll;
On the opposite side across the adjustment roll and the magnesium alloy plate, an induction roll installed in an oblique direction away from the rolling mill than the adjustment roll,
With
The magnesium alloy plate rolled by the rolling mill undergoes deformation processing when passing through the deformation processing portion,
An apparatus for producing a magnesium alloy, comprising the deforming portion on one end side of the rolling mill and reversing means for reversing the front and back of the magnesium alloy plate on the other end side of the rolling mill . In a magnesium alloy manufacturing method in which a rolling mill that reciprocally rolls a magnesium alloy plate with a rolling roll is used,
Deformation processing means for performing deformation processing for each pass of rolling with respect to the magnesium alloy plate is disposed on the line on the exit side of the rolling mill,
The magnesium alloy plate is bent by the deformation processing means , compressive stress acts on the inside of the curved surface of the magnesium alloy plate, and tensile stress acts on the outside of the curved surface of the magnesium alloy plate,
By reversing the rolling direction, the bent magnesium alloy plate is drawn into the rolling mill and stretched, and a compressive stress acts on the outer surface of the curved surface of the magnesium alloy plate. A method for producing a magnesium alloy, characterized in that a tensile stress acts on the inner surface of the curved surface.

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