JPS58500131A - Method for manufacturing products from iron magnetic powder and its manufacturing device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Method for manufacturing iron magnetic powder products and its manufacturing equipment Technical field The present invention relates to powder metallurgy, and in particular to a method and apparatus for manufacturing products from iron ore powder materials. It is related to.

Background technology Uniform structure and material properties for manufacturing products with non-uniform powder materials The following problems regarding the allosomal phenomenon have not yet been adequately resolved.

A method of manufacturing products from metal powder, in which the particle size distribution of the powder is averaged. mixing the powder, filling the container with the powder, sealing the container, heating and compressing the container. Techniques related to the above are well known.

Mixing the above powders makes the distribution of both large and small particles relatively uniform. do. This method tl! Although the material structure of the product has been made relatively uniform, there are still some problems. There is. In particular, powder in a fluffy state has low thermal conductivity, so KFi, which sinters it, A slightly longer heating time is required. In addition, in this method, the inside of the container Space cannot be used effectively.

It is also a method for making products from ferromagnetic powder, and is used to make the particle size distribution of the powder uniform. mixing, filling the powder into a container, vibratory compaction of the powder, and bringing the powder to sintering temperature. techniques involving heating the container, sealing the container, and compressing the container to It has become publicly known.

The above-mentioned method has been put to practical use in an apparatus having a mixing tank provided with a weir in the discharge section. child The mixing tank is drum-shaped and made of structural steel, and this material is a magnetic material. . There is a shaker below the weir, and the shaker has a flat platform to support the container. 0 This device also has a heater and a drawing press device for the container.

A clear advantage of the above method and its equipment is the increased heating time in the sintering process. The goal is to reduce the length. However, when filling the above container, especially vibration compression When carrying out this process, partial separation of the powder occurs. This ultimately results in This causes non-uniformity in the material structure and properties, which significantly reduces the mechanical properties of the product. let

Disclosure of invention The present invention is not intended to provide a method of apparatus for manufacturing products from iron ore powder material. The manufacturing and structural characteristics are that the powder is filled into the container. This prevents partial separation of the powder during filling and vibratory compaction, thereby improving the mechanical properties of the product. Provides properties that improve mechanical properties.

In order to achieve the above object of the present invention, there is provided a method for producing a product from ferromagnetic powder. The above powders are mixed to average the particle size distribution, filled into a container, and the powder is subjected to vibration. The powder is compressed, the container is heated until the powder reaches the sintering temperature, and the container is sealed. In a method involving compaction, the particle size-average powder is filled into the container. It is magnetized before it is applied. During the magnetization process, the small particles of the powder are agglomerated together with the large particles.

The magnetic effect is due to the filling of the agglomerated material into the container and the vibration compression. It is maintained even when it is performed. As a result of this effect, the partial fractionation of the powder Separation is prevented and a uniform texture of the product material is guaranteed.

When magnetizing the above powder, a fixed magnetic field with an intensity range of /X10 to xIOA/m Preferably, the exposure is performed at a time interval of 0.6 minutes. like this The conditions are the most economical as well as clearly improving the quality of materials for the above products. It is something.

In addition, the above-mentioned object of the present invention is to provide a device for manufacturing products from ferromagnetic material with a weir in the discharge part. A vertical mixing tank and a stand for supporting the container are provided below the discharge part of the mixing tank. At the same time, a vibrator is provided which is also located below the container heater and the press device. An electromagnet is installed adjacent to the mixing tank, and the mixing tank and its weir are made of non-magnetic material. This can also be achieved by creating.

The above device magnetizes the powder in the mixing tank without directly contacting the electromagnet. let The filling of the container is not disturbed after magnetization. Mixing tank and weir are non-magnetic This is because it is made of materials.

Preferably, the electromagnet is placed below the mixing tank. The weir between the magnet and the powder is the smallest, and correspondingly the weir when magnetizing the powder is the smallest. Energy consumption is minimal.

A device for moving the electromagnet closer to or away from the charging end and discharge end of the mixing tank. It is necessary to provide a

In such an arrangement, the electromagnet is connected to the mixing tank to maximize the magnetization effect. Let me touch it.

In an improved device, the electromagnetic perspective device can be configured like a vertical guide device. This is equipped with a carrier supporting the electromagnet and a reciprocating drive device. combined with the position.

Further, the electromagnetic perspective device can be configured like a rotating horizontal arm, An electromagnet is held at its end.

Brief description of the drawing IE/Diagram is a side view of a device for manufacturing products from ferromagnetic powder, showing a mixing tank and a partial cross section. ] The press device, the electromagnetic perspective device, the support stand, and the heater are shown in longitudinal section. The drawing, Figure 2, is an enlarged side view of an improved device that allows the electromagnet to move vertically. Partial cross section with mixing tank.

Drawings showing the electromagnetic perspective device and the support stand in longitudinal section, FIG. 3 is the electromagnetic perspective device A side view of the device, which has been improved to have a rotating arm-like structure. FIG. 2 is a side view of a device whose structure has been improved to resemble a carrier.

BEST MODE FOR CARRYING OUT THE INVENTION For carrying out the invention of the method, a mixing tank in the form of a drum is connected to a rotary drive. A device with 1 is used (see FIG. 1). This mixing tank 1 has a charging section 3 and a discharging section. It has μ. This discharge part Hiroshi has a weir j, and below this weir there is a support stand 7 for the capsule r. There is a vibrator t with 0 this mixing tank l and the weir of this tank! is a non-magnetic material (e.g. Made of rust steel). The container r is made of structural steel.

Heater for container r? and the press device 10 are placed next to the container support stand 7 according to the flow of the process. are placed adjacent to each other.

The device has an electromagnet ti arranged adjacent to the mixing tank l. this electromagnet can be installed either above or below the mixing tank 1.

In a preferred embodiment of the invention described below, an electromagnet is disposed below the mixing tank l. do. In this case (irrespective of the above powder in mixing tank l), the above powder and electromagnet are placed as close as possible to each other, with the exception of the walls of the mixing tank mentioned above, and correspondingly The consumption of this powder during the powder magnetization is also small.

The electromagnet 1 can be held directly in the mixing tank 1 (illustration of this modification is omitted). oL) However, a more preferable device is a device that makes the electromagnet move closer and closer. It is something. This is due to the adverse effects of vibration due to contact and the power line to the coil of electromagnet II. This is convenient for charging and discharging the tank 1. Figure 2.

FIG. 3 and the accompanying drawings show a device modified to include an electromagnetic perspective device.

FIG. 2 shows an improved device in which the device l- consists of a vertical guide device 13, and a support for supporting the electromagnet ii is provided on this vertical guide device 13. Transport! The mount is attached. This carrier ia is coupled to a reciprocating drive.

FIG. 3 shows an improved device in which an electromagnet 71 is moved near and far. is constructed like a columnar member /A having a rotating horizontal arm member 17, and the electromagnet // is It is held at the end of this columnar member /j.

Figure 1 shows an improved device in which the device for moving the electromagnet 1/ It is constructed like a flat guide device/l, and this guide device is equipped with a carrier l. Support electromagnet it. The carrier is coupled to a reciprocating drive.

The method of making a product from iron ore powder material is carried out as follows.

Iron ore powder material (e.g. steel powder for tools) Powder with a particle size of 100 ppm or more Can be sieved. Powders with a particle size of 100 μm or less are mixed through the preparation section 3 (Figure 1). This mixing tank is rotated to average the particle size distribution of the entire initial bed. be done. The above powder with an averaged particle size distribution has a strength range of 1Xlo to Coxio. If placed in the fixed magnetic field of A7'n at time intervals of o, l to O0S, then K. Become magnetized. Until this end electromagnet /I is used and this electromagnet //fi the above mixture It is brought close to the tank l by an electromagnetic perspective device lλ (see Figures 2, 3, and Hiro). )0 Next, the magnetized powder passes through the discharge port 4L of the mixing tank L (see Figure 1) and is subjected to vibration. It is poured into a container l supported on a support 7 of the machine 6. Container J (the above magnetized poured The resulting powder is compressed by vibration with a vibration output of frequency soH, vibration width o, and j. be done.

The sintering temperature of this powder is controlled by the tFi heater in a container filled with this compressed powder. heated to a degree. Deaeration work is done at the same time as this heating work, and then the powder The final container is sealed.

Next, the container r containing this sintered powder is pulled out by the press device 10 and pre-filled. It is made into a keyaki of a specified size.

This sintered and compacted powder (product) is removed from the deformed container.

This product is subjected to the above treatment after preheating treatment (hardening, tempering). Afterwards, microstructure analysis and physical tests are conducted to determine bending strength, Rockfel hardness and impact strength. and chemical tests.

For bending strength testing, the above products were heat treated (hardening, 3-stage baking) The specimen is then machined into a bar-shaped specimen. This rod-shaped test piece is bent using a special device. I get kicked. This device is placed between two supports spaced apart from the UO bar. and a punch connected to a hydraulic press device. This support and the The end of the punch has a rounded shape, and the rounded end of this support has a radius /1m, and the rounded end of the punch has a round shape. The end has a radius of 7. ! txj/- is made.

The specimen is bent by the punch on the support until it breaks. this The moving speed of the punch is 0°/W/sec. The bending strength of this test piece at fracture is It is read on the dial of the press device.

This bending strength is calculated by the formula %formula% Mu is bending motion, unit beam vt=bb　/b is a parrot.In this song, resistance P is the bending force applied to the above test piece at the time of failure. , the unit is the distance between the opposite IFi supports, the unit is the 〇 is the width of the above test piece after destruction, the unit is 〇 is the height of the above test piece after destruction, the unit is It's a blessing.

In order to test the impact strength of this material, the above product was tested for IO×IOX/! m heat treatment (hardening, three-step tempering) and machined into rod-shaped specimens.

The specimen is subjected to a pendulum impact tester with an impact force of jOmgm. this The pendulum hits the above test piece until it breaks, and after it breaks, the area of the fracture surface is measured. The above-mentioned impact force at the time of failure is measured by the above-mentioned dial.

The above impact strength is calculated by the formula I was drawn to this place. A is the impact force of the pendulum at the time of breaking the above test piece, and the unit is 4 m F is the cross-sectional area of the above test piece after fracture, and the unit is country 2.

Hereinafter, 0 Example 1 to explain a specific example of the present invention The above product is made from tool steel powder according to the present invention and has a composition of 1 carbon by weight. ．． 3. Silicon O,a, Magnesium O,a, Vanadium 0. #, cobalt 10゜0 , sulfur 0.0J, phosphorus 0. OJ, the remaining amount is iron.

In line with this result, powder grains with a particle size exceeding 100 μm were removed by sieving. 100 Powder particles with a particle size of μm or less are mixed for 30 minutes in the mixing tank above to make the particle size distribution uniform. combined. The powder with an averaged particle size distribution has a strength of /X/□A/EEL. magnetized by being exposed to the action of a constant magnetic field. This magnetization work Fio was continued for λj minutes This magnetized powder was poured into a container made of carbon O, flathead structural steel. The container 0 has a cylindrical shape with a diameter of J00ws and a depth of 60Qws. in this container The above powder frequency this container! OHz, amplitude 0. By vibrating with jKM After 3 minutes of densified zero vibration compression work, the vibration of this powder is stopped and the container is opened. The open end is closed by welding a lid with a connecting member. This connecting member is connected to the vacuum port 2. The inside of the container was evacuated to 10 us of mercury. At the same time this container was heated to 1160°C, maintained at this temperature for 3 hours, and degassed.

After the degassing operation is completed, the connection member of the container is closed.

A container whose closed part is sealed and which contains the above-mentioned powder and is heated to the above-mentioned temperature. was drawn into a cylindrical rod with a diameter of 100 m5.

The powdered metal (product) for the rod-shaped test piece above acts as a core, and the deformed container above acts as an outer shell. This rod-like specimen was tempered at FirjO℃ for a period of time to act as 0. It was then cooled to 200°C at a rate of λO°C/min, and then air cooled to room temperature. this The outer shell was removed from the core by turning the lathe.

The above products manufactured as described above after preheating treatment (hardening and tempering) were subjected to microstructural analysis, Subjected to physical and mechanical tests to determine bending strength, Rockwell hardness, and impact strength. was measured.

The test results are as follows.

Bending strength Shizuka/Fight ・・・・・・－・・・・・・・・・ Coro 0 Rockquel hardness C････････Impact strength Kpm/α･･･････ ・・１． Products made from non-magnetized powders with the same composition can also be made using the method described above. Ta.

Comparing the mechanical properties of the above products, the unit strength is 20 to 100% and the impact strength is 30%. It was found that the amount increased to -. Products made based on the present invention as a result of structural analysis The example sample revealed that the grain structure is more uniform. The product has a composition by weight of 1. Co, chromium ginseng, co, nickel O0, manganese 0. 3.01 vanadium, ago, tungsten, λ, 0, molybdenum , co, cobalt t, λ, sulfur 0.03, phosphorus 0.03, residual amount iron tool steel powder was made in accordance with the present invention using. Based on this result, powder with a particle size of 100 or less The grains were mixed for 30 minutes in the mixing tank described above for uniform particle size distribution. averaged grain The above powder has a strength/XIOA/I! magnetized by exposing it to a fixed field of l It was. This magnetization work was continued for 0.2 J. This magnetized powder contains carbon O, co A container made of structural steel (the o'ller in which it was poured is 300 m in diameter and has a depth of It has a 400m cylindrical shape. The magnetized powder in this container has a frequency j of this container OHz, swing width 0. It was made denser by the vibration of jsaa. Vibratory compression of this powder is stopped for 3 minutes and the open end of this container is welded with a lid with pipe fittings. More closed. Vacuum pump 2 to this pipe connector The inside of the container was evacuated to iom of mercury. At the same time, this The vessel was heated to l/jtO°C and held at this temperature for 3 hours to allow sintering and degassing. It was done.

After the deaeration is completed, the container is closed by closing the pipe fitting and sealing this closed part. The sealed container containing the powder and heated to the temperature can be immediately removed by pulling it out. It was made into a cylindrical rod with a diameter of 100wm.

The above powdered metal (product) for the above rod is used as the core, and the above deformed container is used as the outer shell. It works. The above-prepared bar was annealed at tSO℃ for a required time and then heated at λO℃/min. It was cooled to SOO° C. and then air cooled to room temperature. This outer shell is rotated by a lathe. Therefore, it was excluded from the above core.

After preheating treatment (hardening, tempering), the products made as described above are subjected to microstructural analysis. The above materials were subjected to physical tests to determine bending strength, Rockwell hardness and impact strength. The results of the test are as follows.

The song is strength　KP／■　・・・・・・－・・・・・・・・・Core 0 Rockwell hardness C・・・・・・・・・Tr technique attack strength time m/am・・・・・・・・・・・・ .../J From this fact, it follows that the products made by the method according to the invention are superior to the prior art. Compared to products made based on the technique, the average strength is 0.5% by weight and the impact strength is It can be seen that the average increase was 3°.

Example 3 The product is made of tool steel powder according to the invention, and the composition of this tool steel is - by weight - carbon Element /, 0, manganese 0゜hiro, silicon o, a% pctm3. ? , Sulfur 0.0! ,Rin 0.0! , the remaining amount is iron. In line with this result, powder particles with a particle size of 100 μm or less The mixture was mixed for 0 minutes in the mixing tank for the purpose of averaging the powder distribution. The average of this particle size distribution The powder is magnetically exposed to the action of a fixed field with a strength of /X/OA/nl. was made into This magnetization work Fio, Ko! It continued for minutes. This magnetized powder is carbon It was poured into a container made of O. flathead structural steel. The container is cylindrical and has a diameter of 300 mm. tm, depth 600ts. The magnetized powder is placed inside this container. frequency 701 (,.

Width 0. ! Vibration compression was performed by excitation at 1.

The excitation work on this powder was stopped in 3 minutes, and the open end pipe connector of the container was It was forced closed by welding the lid. This pipe fitting is connected to the vacuum pump te 2 The inside of the container was evacuated to 10 W of mercury. At the same time, this container 1-4/1 It is heated to 30° C. and kept at this temperature for one hour to proceed with sintering and degassing.

After deaeration is complete, this container is closed by closing the pipe fitting and sealing this closed part. Sealed. The container containing the powder and heated to the temperature is pulled out. It was made into a cylindrical keyaki tree with a diameter of 100cm.

The powdered metal (product) for this rod serves as the core, and the deformed container above serves as the outer shell. , act. This rod f”Jtjθ℃ is tempered for μ hours and S is heated at a rate of 20℃/min. It was cooled to OO°C and then air cooled to room temperature. The above outer shell is raised by the rotation of the lathe. removed from the record.

In this way, the products made after preheating treatment (hardening, tempering) can be analyzed by microstructure analysis. Subjected to physical and mechanical tests for bending strength, Rockwell hardness and impact strength was measured.

This test was conducted in the same manner as described above.

The results of this test are as follows.

Bending strength KP/-・・・・・・・・・・・・・・・300 Rockquel hardness C・・・・・・・・・11 Impact strength Thin Ill 1 country・・・・・・・・・・・・ ・1. This fact shows that the powder made by the method according to the invention is superior to that according to the prior art. Compared to the powder made by the method, the strength is on average 5% by weight and the impact strength is on average It can be seen that it has increased by 30%.

Example Hiroshi The product is made of tool steel according to the invention, the composition of which is in weight percent carbon/ ,0. Emesis O0hiro, manganese 0. Me, Chrome 3. Ko, nibkel 0. Q, Tangs Ten 2.01 Molybdenum a, O, Vanadium λ, 3, Cobalt 1.0, Sulfur 0. O.J., Lin 0. OJ, the remaining amount was iron. As a result, the particle size exceeds 100 μm. The sieve was removed into powder particles. For particles with a particle size of 100 μm or less, mix them in the above mixing tank for 30 minutes. degree distribution was mixed for averaging. Powder with an averaged particle size distribution has a strength of It was magnetized by exposing it to the action of a fixed field of ×loh/m. This magnetization work is repeated for 25 minutes. continued. This magnetized powder is poured into a container made of carbon O, flathead structural steel. It was. The container is cylindrical, with a diameter of J00wx and a depth of 600m. This capacity The magnetized powder in the container is shaken at a frequency of soH, an amplitude of o, and zm. It was made denser by doing so. This vibration compression work was stopped in 3 minutes, and the container was The open end was closed by welding a lid with a tube fitting. This pipe fitting is a vacuum pump Close to 2 Subsequently, the inside of the container was evacuated to /OM Hl. At the same time, this capacity The vessel was heated to 1110°C and held at this temperature for λ hours to perform sintering and degassing. Ta. After completing the degassing operation, the container is closed by closing the pipe fitting and sealing this blockage. Sealed. This container containing the above powder and heated to the above temperature has a diameter of 700 mm. It was pulled out by a cylindrical rod.

The powdered metal (product) for this rod is used as the core, and the above deformed container is used as the outer shell. It works. This produced rod was tempered at rso℃ for a required time, -0℃/min. The mixture was cooled to 5oor2 at a rate of 100.degree., and then air-cooled to room temperature.

This shell was removed from the core by rotation of the lathe.

In this way, products made after preheating treatment (hardening, tempering) are subjected to structural analysis and physical examination. Subjected to physical and mechanical tests to determine bending strength, Rockwell hardness, and impact strength was measured.

The results of this test are as follows.

Bending strength ~/n ・・・・・・・・・・・・・・・3 O rock sea urchin #hard-g G・・・・・・・・・67 Impact strength Kp m/3・・・・・・・・・ ...i,r From this fact, products made by the method based on the present invention are superior to the prior art. The strength is increased by an average of 10% and the impact strength is increased by an average of 30% compared to products made by the same method. Kotogawaru0 Example! The product is made according to the invention from tool steel powder, the composition of which is - by weight - carbon 1. 0, manganese O1, silicon O9, chromium 3. ri, tungsten≦, o, molyb Ten Hiroshi, f. Vanadium Jin 75 Cobalt Hiroshi, r.

Sulfur o, o3. yin0. OJ, the remaining amount is iron.

In line with this result, the sieve content was removed from the particles with a particle size exceeding 100 μm in the above powder. . Particles with a particle size of too μm or less are mixed in the above mixing tank for 30 minutes to make the particle size distribution uniform. combined. The powder with this uniform particle size distribution has a hardness of 1×10 A/m. Magnetized by exposure to the action of a fixed field. This magnetization work continues for 1ltO,/min. Ta. This magnetized powder is poured into a container made of structural steel with 0.2% carbon. It was done. The container is cylindrical, with a diameter of J00ws and a depth of AOOts. this The magnetized powder in the container excites the container at frequency j (7 Hz, amplitude O0j). It was densified by This vibration compression work is stopped after 3 minutes, and the container is opened. The open end was closed by welding a lid with pipe fittings. This pipe fitting is true It was connected to an empty pump and the inside of the container was evacuated to -2W fl H. With this At the same time, the above container Fil is heated to 130℃ and kept at this temperature for λ hours to perform sintering and desorption. Qi is done. Once deaeration is complete, this container will be free from occlusion of the pipe fittings and this Sealed by sealing the occlusion.

The container containing the powder and heated to the above temperature is pulled out and becomes a cylinder with a diameter of 100 m. was made into a stick.

This rod each acts as a core and the container as an outer shell. This rod is rs Tempered at 0°C for 3 hours, cooled to SOO°C at a rate of -0°C/min, then emptied to room temperature. Chilled. This shell was removed from the core by turning the lathe.

Products made in this way after preheating treatment (hardening, tempering) can be used for structural analysis and physical examination. The bending strength, Rockfel hardness, and impact strength were determined by physical and mechanical tests. Measured.

The results of this test were as follows.

Bending strength Kp/m 310 Rockwell hardness C・・・・・・・・・6r Impact strength Kp m/tx・・・・・・・・・ ...1.1 A product is made from the same powder as above with a reduced degree of magnetization, and this is Tested. Comparing the above products to this product, the strength is on average 20-27%, It can be seen that the impact strength is 30-larger on average.

Textural analysis shows that the grain structure of the material forming the product according to the invention is more uniform. It was revealed that it was a bite 0 Example The product is made of tool steel according to the invention, the composition of which is by weight, carbon/ ,0. Manganese 0.4E, silicon 0. *, chrome 3. , tungsten t, 0, mo ! J F7 a, z, (Nashikum 1.7, Kobal) s, 1, sulfur 0. O.J., Lin 0. OJ, the remaining amount was iron.

In accordance with this result, particles with a particle size exceeding 100 μm were removed by sieving. particle size 10 Particles of 0 μm or less were mixed in the mixing tank for 1 minute to make the particle size distribution uniform. This uniformly sized powder is exposed to the action of a fixed field of intensity l×IO^/m. It was magnetized by this. This magnetization work was continued for FiO,j minutes. This magnetized powder is carbon 0. It was poured into a container made from flathead structural material. The container is cylindrical and straight. The diameter is JOO■ and the depth is 600m5. Add this magnetized powder to the magnetized powder in this container. Frequency the container! It was densified by shaking it with OHt and a vibration width of 0.311M.

The vibratory compression operation was stopped after 3 minutes, and the open end of the container was closed with a lid with a pipe fitting. Closed by welding. Vacuum pump 2 to this pipe connector The inside of the container was evacuated to a pressure of 10 mm. At the same time, the above contents The vessel was heated to 1130°C and maintained at this temperature Vr for a time λ to perform sintering and degassing. I was disappointed.

Once the air has been degassed, the pipe fittings in this container are closed, and this closed part is sealed. sealed by being A container containing the above powder and heated to the above temperature. The vessel was made into a cylindrical rod with a diameter of 100 m by drawing.

The powdered metal for each rod above acts as the core and the deformed container above acts as the outer shell. Ru. The produced bar was heated at 110°C for an hour and then heated at a rate of 0°C/min. After being cooled to OO°C, it was air cooled to room temperature. The above outer shell is turned into the above core by lathe rotation. 0Products made in this way after preheating treatment (hardening, tempering) is subjected to structural analysis, physical test and mechanical test to determine the strength, Rockfel hardness and impact strength were measured.

The results of this test are as follows.

The song is strength / parrot ・・・・・・・・・・・・・・・・・・3 C・・・・・・・・・tr Impact strength Kp m/cm・・・・・・・・・ ...λ, O From this fact, products made by the method based on the present invention are not based on the prior art. Compared to products made using this method, the unit strength is on average 2! On the other hand, the impact strength increases It can be seen that the number has increased by 30% on average.

Example 7 (negative) The product was made in much the same manner as in Example 1 and of similar materials. However, the above powder In the magnetization process, the strength of the fixed magnetic field is txtoh/mc, which is below the minimum value).

The test results of the manufactured products are as follows.

Bending strength Q / W 210 Rockquel hardness C・・・・・・・・・timpact strength KIN/6m・・・・・・・・・・・・ ・・１． / From this fact, at the above strength of the above fixed field, the above powder is within the required range. is not magnetized until This powder deteriorates the properties of the product when poured into the container (manufactured in Example 1). In particular, the bending strength is only 1 inch greater than that of non-magnetized products. Unsatisfactory example t (negative) The product is almost the same as the example, made of similar materials, but the magnetization process of the powder described above is The strength of the solid scaffold is j x 10 A/m (i.e., this value falls within the range of claim 1). outside the range, greater than the maximum value above) changed to 0 The test results of the manufactured products are as follows.

The song is strength KP/m・・・・・・・・・・・・・・・3λO Rockwell hardness C・・・・・・・・・t7 Impact strength Kp m/cs・・・・・・・・・ ...1. f From this fact, at this strength of the above fixed field, the strength according to the present invention is It can be seen that the characteristics of the product are not improved by comparison. At the same time, in this case Energy consumption becomes greater and it becomes unreliable to use.

Examples The product was much the same as Example 3 and was made from similar materials. However, the magnetization process of the above powder When the magnetization time is 0. Q participation (i.e., this value is outside the scope of claim 2) , smaller than the above minimum value).

The manufactured products were subjected to testing, and the results are as follows.

Bending strength Edge/Parrot・・・・・・・・・・・・・・・2JO Robkwell hardness C・・・・・・・・・TR Impact strength noodles Ill/cm・・・・・・・・・・・・ ...1. From this fact, the above powder is required at the above specific magnetization time. It can be said that it is not sufficient to magnetize to a certain extent. This means that the above powder is placed in the above container. Due to the particle size of the powder when poured, it may lead to partial separation of the powder, resulting in product characteristics. (compared to products made according to the claims of the present invention) If) 0 Example 10 The product was made much like Example λ and from similar materials. However, if the above powder is In the magnetization step, the magnetization time was changed to 1 minute (i.e., this value was changed to 1 minute). If the manufactured product is outside the range stated in the section and exceeds the maximum value, The results are as follows.

Bending strength KP/■・・・・・・・・・・・・・・・270 Rockwell hardness C・・・・・・・・・tr Impact strength Kp m/x・・・・・・・・・ .../,j From this fact, the specific magnetization time is compared to the magnetization time based on the present invention. It can be said that the characteristics of the product are improved. At the same time, in this case, energy consumption is even higher. There will be a lot of them, and you won't be able to use them.

Industrial applicability The invention relates to cylindrical or shaped semi-finished products, e.g. structures, in the field of metallurgy and mechanical engineering. It can be applied to making steel materials etc. with magnetic iron powder, and it can also be applied to making materials such as cermet materials. It can also be applied to fabrication from materials with poor malleability. Also, one more thing after leaving the base. It can also be applied to the production of composite semi-finished products that combine various metals. These half The product can also be applied to the production of strong cutting tools and punching dies.

E1 f/12 1lII#ffll116MIAIllbCJWMva, PCTISL:80I 00194 Continuation of page 1 @Inventor Artamonov Yuri Viktorovich Soviet Union 330009 Zaporozhye Uritsutsa Ushakova Day 22 6 0 shots clear by Klimenko Aleksandr Fyodorovich Soviet Union 330059 Zaporozhye Uritsutsa Komarova Day 5 Rikiichi V Koichi 6

Claims (1)

[Claims] 1. Mixing of powder for uniform particle size distribution, filling of this powder into a container, this powder Vibratory compression of the powder, followed by heating the powder in the container to the sintering temperature, and In the method of manufacturing products with ferromagnetic powder, including the sealing of the container and its compression, the above-mentioned uniform The powder with uniform particle size distribution is magnetized before being filled into the container. Method for manufacturing products from iron magnetic powder characterized by the above powder to be magnetized has a strength of 1 xlO to x10 A/m of fixed magnetic field. / to 0°5 minute time interval For manufacturing a product from the ferromagnetic powder according to claim 1, which is exposed to How to J. A mixing tank with a weir at the discharge part, and a support for the container to support the discharge of the mixing tank. Vibrator installed below the weir at the exit, and also below the heater and press machine of the container mentioned above. In the apparatus having an electromagnet (/ /), the mixing tank (1), and the weir (j) of this mixing tank may be made of non-magnetic material. A device for manufacturing products from ferromagnetic powder, characterized by: The electromagnet (ll) is arranged below the mixing tank (1). An apparatus for manufacturing products from ferromagnetic powder according to claim 3. A device (1) is installed inside to approach and separate the electromagnet (//) above. A product made from the ferromagnetic powder according to claim 3 or reference item 3, characterized in that Equipment to manufacture. 6. The device (ll) for approaching and separating the electromagnet (//) is a vertical guide device. The electromagnet (//) is supported by the electromagnet (//), and the reciprocating movement is characterized in that it is equipped with a carrier (l#) coupled to a moving drive device (11). An apparatus for manufacturing products from ferromagnetic powder according to claim 5. 2 The device (/J) for bringing the electromagnet (//) closer together and separating it is a horizontal rotating The pillar <11> has an arm member (17) which is attached to the pillar (14). Manufacture a product from the ferromagnetic powder according to claim 5, characterized in that a stone is attached. device to do.