JPH0696165B2 - Method and apparatus for manufacturing reinforced metal - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a method for producing a reinforced metal and an apparatus for producing a reinforced metal by the method.

[Conventional technology]

As a method for producing a reinforced metal, the applicant of the present invention has filed Japanese Patent Application No.
No. 697 presents an invented method of obtaining a powder compact of an amorphous metal or a microcrystalline metal having excellent physical properties obtained by the rapid solidification method while maintaining the original properties of these metal powders while maintaining a strong characteristic. .

In the method described above, a powder of amorphous metal or microcrystalline metal is extruded by an extruding member and a pressing member is rotated to impart a shearing force to the metal powder to crush it into a green compact. To do. According to this method, it is possible to form a molded body without heating these metals while maintaining their excellent characteristics.

[Problems to be Solved by the Invention]

The present invention is a further improvement of the above method, and not only the above-mentioned amorphous metal and microcrystalline metal powder, but also other metal powders, various metal materials such as metal solids and metal melts are more preferable. It is intended to provide a method and an apparatus for manufacturing a reinforced metal that can be highly processed and strengthened.

[Means for Solving the Problems]

In order to achieve the above object, the method for producing a reinforced metal according to the present invention applies a shearing force in a rotational direction from one side end surface of the metal material while axially pressing the metal material from both end surfaces in a cylindrical container. While applying, the metal material is extrusion-molded from an extrusion port provided on the outer peripheral surface of the cylindrical container in a direction orthogonal to the rotation axis. Further, the extrusion molding of the metal material can be simultaneously performed from a plurality of extrusion ports provided on the outer peripheral surface of the cylindrical container.

When a metal powder or a metal solid is used as the metal material, it is preferable to carry out extrusion molding with the internal pressure of the material being 0.5 times or more the yield pressure of the material at the pressurizing temperature.

Also, an apparatus for producing a reinforced metal by the above method,
At one end of a cylinder container with both ends opened, a rotary punch having a rotation surface that rotates around an axis is closed by closing the opening of the container, and a pressure punch movable from the other end of the container in the axial direction is provided. By being fitted into the container, a processing space having a circular cross section is formed inside the cylinder container, and an extrusion port is provided on the outer peripheral surface of the processing space.

Further, a plurality of the extrusion ports can be provided on the same circumference of the outer peripheral surface in the processing space.

It is preferable that a plurality of extrusion ports in the apparatus be provided at equal intervals on the same circumference.

Further, in the above-mentioned device of the present invention, a material supply port is provided within the range of movement of the pressure punch in the peripheral wall portion of the cylinder container, and the metal material can be supplied or additionally supplied from the supply port, and a large number of pressure surfaces of the pressure punch are provided. Protrusions or recesses are provided, conical protrusions are provided on the rotating surface of the rotary punch, and pressure means for applying hydraulic pressure or hydrostatic pressure is provided on the outside of the extrusion port. Various modes such as arranging molds outside the outlet may be considered.

[Work]

The configuration of the present invention is as described above, and when the metal material is subjected to a shearing force in the rotational direction from the end of the metal material under pressure in the container, for example, when metal powder is used as the material, The positions of the particles change and the material density of the material increases, and the crystal particles are plastically deformed and the particles are bonded and solidified. The metal material is reinforced by the work hardening and homogenization of the internal structure. Further, in the case of a metal solid material, it is strengthened by the effects of fragmentation and refinement due to plastic deformation of crystal grains inside the material, work hardening, and refinement of precipitates and homogenization of internal structure. Even when the material is a metal melt, the same effect can be obtained by controlling the temperature so that the region that undergoes shear deformation is in a semi-solidified state. Then, in the method of the present invention, the material that has been reinforced by being pressed and sheared as described above is extruded from the extrusion port to be further extruded into the metal material that has been reinforced by pressing and shearing. A large plastic deformation is applied by processing, and the extrusion position is used as the outer peripheral surface of the processing space so as to extrude in the direction orthogonal to the rotation axis of the shearing force, that is, the pressing direction. Extremely high, the metal material is more highly reinforced. In normal extrusion molding, this is
The material is extruded in a direction parallel to the pressing direction from the extrusion port provided on the pressing shaft. In the pressing and shearing process of the present invention, the metal material is subjected to the shearing force in the rotational direction acting on the metal material. The amount of plastic deformation of is the smallest in the rotating shaft portion and increases as it decenters from the rotating shaft and moves away from the rotating shaft, and the workability of the material becomes highest on the outer peripheral surface of the working space. The extrusion molding is performed from the surface. And in this case, if the extrusion efficiency is improved by performing extrusion molding from a plurality of positions on the outer peripheral surface at the same time, in addition, if each extrusion port is provided on the same circumference of the outer peripheral surface of the processing space having a circular cross section, The processing conditions received by the metal material at the extrusion port become equal, there is no quality variation between the reinforced metal extruded from each extrusion port, and it is possible to manufacture products of constant quality at the same time. By forming it, a molded product having a desired cross-sectional shape can be obtained.

In the above-mentioned manufacturing method, when using a metal powder or a metal solid body as the metal material, the internal pressure of the material at the time of extrusion is 0.5 times or more the yield pressure of the material to plastically deform the crystal particles in the material. Thus, the crystal particles can be more firmly adhered to each other.

As an apparatus for producing a reinforced metal by the above method, one end opening of a cylinder container is closed by a rotary punch and a pressure punch is fitted from the other end, so that a metal material is reliably pressed in an internal processing space. In addition, the shearing force by the rotary punch can be reliably transmitted to the metal material, and when a plurality of extrusion ports are provided on the same outer circumference of the pressurizing space having the circular cross section, It is possible to manufacture a plurality of products of the same quality with the same material processing conditions at the same time. Furthermore, by making the positions of the extrusion ports equidistant, the processing conditions at each extrusion port can be made more uniform.

〔Example〕

 Hereinafter, the present invention will be further described with reference to the accompanying drawings.

FIG. 1 is an embodiment of an apparatus using the method for producing a reinforced metal according to the present invention, in which a rotary punch capable of being container around the axis of the cylinder container 1 is provided at one end opening of the cylinder container 1 having both end openings. 2 in series to close the opening,
From the other end opening of the cylinder container 1, the cylinder container 1
The pressure punch 3 which is movable in the axial direction inside is fitted,
A processing space S is formed in the cylinder container 1, and an extrusion port 4 communicating with the outside is provided in a peripheral wall portion of the cylinder container 1 forming the processing space S. The manufacturing of the reinforced metal by the above apparatus is performed in the processing space S in the cylinder container 1.
Is filled with metal material M, and the processing space S is formed by the pressure punch 3.
Rotating punch 2 at the same time as metal material M is highly pressurized inside
By applying a shearing force in the rotational direction to the metal material M under pressure by rotating the metal material M, the material strength of the metal material M is increased by the action of plastic deformation of the crystal particles in the metal material M, miniaturization of the crystal particles, and the like. To be enhanced. Then, the metal material M after being strengthened in this way is further orthogonal to the action direction of the pressure and shear force from the extrusion port 4 provided in the peripheral wall portion of the cylinder container 1 by the pressing force of the pressure punch 3 by the extrusion operation. Is extruded in the direction of
The metal material M, which has been strengthened by shearing, is further plastically deformed and is carried out of the apparatus as a highly reinforced molded product.

In the reinforced metal manufacturing apparatus, if the material supply port 5 is provided within the moving range of the pressure punch 3 on the peripheral wall portion of the cylinder container 1 as shown in FIG. Metal material M being processed by moving to the rear of
A space is provided between the pressure punch 3 and the cylinder container 1
The metal material M can be newly supplied into the processing space S in the cylinder container 1 without removing it from the inside, and a new metal material can be further added depending on the amount of the metal material M extruded from each extrusion port 4 and consumed. It is possible to continuously supply M to successively form the reinforced metal product.

As described above, when the metal material is newly supplied during the extrusion process to continuously produce the reinforcing material, as shown in FIG. 3, a large number of protrusions are formed on the pressure surface 3a of the pressure punch 3 as shown in the figure. If the pressure surface 3a is made uneven by providing 6 or a recessed portion, the processing space S
The end faces of the metal material M in the inside are uneven, and due to the action of the shearing force in the rotational direction given to the metal material M by the rotation of the rotary punch 2, they slip at the boundary surface A between the metal materials M supplied separately. Integrated without
No boundary surface is formed on the extruded product.

Further, as shown in FIG. 4, by providing a pressurizing means 7 such as hydraulic pressure or hydrostatic pressure on the outside of the extrusion port 4, the reinforced metal molded product is extruded from the extrusion port 4 so that the metal material M in the container 1 is extruded. The internal pressure of is prevented from dropping sharply, and the pressure and shearing force on the metal material M in the container 1 are maintained.

Further, as shown in the figure, the processing space S is formed on the rotation surface of the rotary punch 2.
When the projection 8 having a conical shape protruding inward is provided, the molded body is extruded from the extrusion port 4 more promptly.

As for the installation position of the extrusion port 4 in the apparatus of the present invention as described above, it may be provided on the peripheral wall portion of the cylinder container 1 as in the apparatus of FIG. 1 or 4, or as shown in FIG. 2 or 3. The rotary punch 2 may be provided at the boundary between the cylinder container 1 and the rotary punch 2 or, as shown in FIG. 5, the rotary punch 2 may be formed in a bottomed cylindrical shape and provided on the peripheral wall portion thereof. In this case, the boundary surface B between the rotary punch 2 and the cylinder container 1
In, the shearing force is applied to the metal material M. Further, as shown in FIG. 6, the extrusion ports 4 are extruded from the extrusion ports 4 by providing a constant space between the extrusion ports 4 on the same circumference in the processing space S in the apparatus. The quality of the reinforced metal molded product extruded from each extrusion port 4 can be made constant by making the processing conditions received by the metal material M the same.

Further, in the structure shown in FIG. 7, a mold body 9 having an internal space C having a desired shape is continuously provided outside the extrusion port 4,
In the cylinder container 1, the metal material M that has been reinforced by pressure and shearing force and extruded from the extrusion port 4 is
Is directly filled into the molding space C inside the mold body 9 so that a reinforced metal product having a desired shape can be pressure-molded. This is because the crystal grain is made fine by applying a shearing force to the metal material M while being highly pressurized in the pressure space S, and the material is superplastic by controlling the processing temperature appropriately. As a result, the space C in the mold body 9 can be filled and can be molded into a desired shape.

[Effect of the Invention] As described above, according to the method for producing a reinforced metal according to the present invention, by applying a shearing force to a metal material such as a metal powder, a solid or a melt under pressure. In addition to plastically deforming and strengthening, this is further extruded to give a higher degree of processing to the metal material and strengthen the material to a higher degree. By making the outer peripheral surface of the processing space that receives the greatest shearing force due to rotation, it is possible to further process and strengthen the metal material at the same time, and it is possible to extrude from multiple positions on the outer peripheral surface at the same time, so that multiple molded products can be kept constant It can be efficiently manufactured with the following quality.

[Brief description of drawings]

FIG. 1 is a side sectional view of an embodiment of an apparatus for carrying out the method of the present invention, FIGS. 2 to 5 are side sectional explanatory views showing another embodiment of the apparatus, and FIG. FIG. 7 is a side cross-sectional explanatory view showing a state where the extrusion port is installed in the apparatus, and FIG. 7 is a further embodiment of the apparatus according to the present invention. 1: Cylinder container, 2: Rotary punch, 3: Press punch, 4: Extrusion port, 5: Supply port, 6: Protrusion, 7: Pressing means, 9: Mold.

Claims (11)

[Claims] 1. A metal material in a cylindrical container is pressurized axially from both end surfaces of the metal material, and a shearing force is applied in a rotational direction from one end surface of the metal material while the metal material is kept in the cylindrical container. A method for producing a reinforced metal, comprising extruding in a direction orthogonal to a rotation axis from an extrusion port provided on an outer peripheral surface. 2. The method for producing a reinforced metal according to claim 1, wherein the metal material is simultaneously extrusion-molded through a plurality of extrusion ports provided on the outer peripheral surface of the cylindrical container. 3. The extrusion molding according to claim 1, wherein a metal powder or a metal solid body is used as the metal material, and the internal pressure of the material is 0.5 times or more the yield pressure of the material at the processing temperature. Reinforced metal manufacturing method. 4. A cylinder punch having both ends opened is provided with a rotary punch having a rotation surface that rotates around an axis and closes the opening of the container, and is movable in the axial direction from the other end of the container. Reinforcing metal, characterized in that a processing space having a circular cross section is formed inside a cylinder container by fitting a pressure punch into the container, and an extrusion port is provided on the outer peripheral surface of the processing space. Manufacturing equipment. 5. The reinforced metal manufacturing apparatus according to claim 4, wherein a plurality of extrusion ports are provided on the same circumference of the outer peripheral surface in the processing space. 6. The reinforced metal manufacturing apparatus according to claim 4, wherein a plurality of extrusion openings are provided at equal intervals on the same circumference. 7. A material supply port is provided within a moving range of a pressure punch on a peripheral wall portion of a cylinder container.
The reinforced metal manufacturing apparatus as described in the paragraph. 8. The reinforced metal manufacturing apparatus according to claim 4, wherein a large number of protrusions or recesses are provided on the pressing surface of the pressing punch which faces the processing space. 9. The reinforced metal manufacturing apparatus according to claim 4, wherein a pressurizing means such as hydraulic pressure or hydrostatic pressure is provided outside the extrusion port. 10. The apparatus for manufacturing a reinforced metal according to claim 4, wherein a conical protrusion protruding into the processing space is provided on the rotating surface of the rotary punch. 11. The reinforced metal manufacturing apparatus according to claim 4, wherein a mold body is continuously provided outside the extrusion port.