TWI721692B

TWI721692B - Device and method for manufacturing metal powder

Info

Publication number: TWI721692B
Application number: TW108144900A
Authority: TW
Inventors: 許傳仁; 許竣享
Original assignee: 財團法人金屬工業研究發展中心
Priority date: 2019-12-09
Filing date: 2019-12-09
Publication date: 2021-03-11
Also published as: TW202122181A

Abstract

A device for manufacturing metal powder comprises a liquid supply unit, a control unit, and a nozzle unit disposed below said liquid supply unit. Said liquid supply unit includes a diversion tube for conveying high-temperature metal liquid. Said control unit includes a core rod extending through said diversion tube and spaced from the tube wall to define a ring-shaped heating space, and a heating element mounted in said core rod. Said nozzle unit is adapted to spray the inert gas to said metal liquid to form a plurality of metal powders. By operating said core rod, said metal liquid flows in an annular cross section in said heating space. Said heating element uniformly heats said metal liquid from the inside to the outside, so as toavoid blockage in said diversion tube.

Description

金屬粉末製造裝置及方法Metal powder manufacturing device and method

本發明是有關於一種粉末製造裝置，特別是指一種金屬粉末製造裝置及方法。The present invention relates to a powder manufacturing device, in particular to a metal powder manufacturing device and method.

近代金屬粉末的應用因為科技的進步而快速發展，不只施用於重工業領域、也帶來了零組件加工技術的突破。因此，如何製造高純度、高圓度，且粒徑均勻的金屬粉末，已是工業領域亟欲改善的方向。The application of metal powder in modern times has developed rapidly due to the advancement of science and technology. It is not only applied to the field of heavy industry, but also brings breakthroughs in component processing technology. Therefore, how to produce high-purity, high-roundness, and uniform particle size metal powder has become an urgent improvement direction in the industrial field.

而製造金屬粉末的方法，目前主要有機械法、化學還原法、水霧化製程、離心力霧化製程，以及氣體霧化製程。其中，該氣體霧化製程以惰性氣體為霧化媒介，配合高壓氣體及噴嘴設計，形成高速氣體衝擊高溫金屬液而產生多個微小金屬液滴，該等金屬液滴則會內聚成球狀並冷卻形成金屬粉末。因為霧化媒介是反應活性低而不會與該等金屬液滴產生化學反應的惰性氣體，並且氣體冷卻速率遠比水霧化的速度慢而使該等金屬液滴有充足時間能夠內聚凝結，所以相較於其他製程而言，氣體霧化製程具有高純度、高圓度，且粒徑小的優點。The methods for manufacturing metal powder currently mainly include mechanical methods, chemical reduction methods, water atomization processes, centrifugal force atomization processes, and gas atomization processes. Among them, the gas atomization process uses inert gas as the atomization medium, with high-pressure gas and nozzle design, to form a high-speed gas that impacts the high-temperature molten metal to generate a number of tiny metal droplets, and the metal droplets will cohesively into a spherical shape And cooling to form metal powder. Because the atomizing medium is an inert gas that has low reactivity and will not chemically react with the metal droplets, and the gas cooling rate is much slower than the water atomization speed, so that the metal droplets have sufficient time to coalesce and condense. Therefore, compared with other processes, the gas atomization process has the advantages of high purity, high roundness, and small particle size.

參閱圖1，現有之一金屬粉末製造裝置，包含一適用於連接一熔爐90並用以輸送高溫金屬液I的導流單元91、一環繞設置於該導流單元91並持續加熱該金屬液I的加熱單元92，及一設置於該導流單元91下方，用以噴射惰性氣體J衝碎該金屬液I並凝結而形成多個金屬粉末K的霧化單元93。現有之該金屬粉末製造裝置確實能藉由該導流單元91持續輸送熔融狀態的高溫金屬液I，並結合該加熱單元92持續控制該金屬液I的相態及黏度，當該金屬液I受到萬有引力而自由下落至該金屬液I時，將會被高壓之該惰性氣體J衝碎成多個金屬液滴，並被氣體冷卻而內聚凝結形成金屬粉末K，此時該金屬粉末K再受到萬有引力影響而下落，使用者僅須在下方收集該等金屬粉末K即可。Referring to FIG. 1, an existing metal powder manufacturing device includes a guide unit 91 suitable for connecting to a furnace 90 and used for conveying high-temperature molten metal I, and a guide unit 91 that is arranged around the guide unit 91 and continuously heats the molten metal I The heating unit 92 and an atomizing unit 93 arranged below the guiding unit 91 are used to spray the inert gas J to smash the molten metal I and condense to form a plurality of metal powders K. The existing metal powder manufacturing device can indeed continuously deliver molten high-temperature molten metal I through the guiding unit 91, and combine with the heating unit 92 to continuously control the phase state and viscosity of the molten metal I. When the molten metal I is subjected to When falling freely to the molten metal I due to gravity, it will be crushed by the high-pressure inert gas J into multiple metal droplets, and cooled by the gas to condense and form metal powder K. At this time, the metal powder K is subjected to When falling under the influence of gravity, the user only needs to collect the metal powder K below.

現有之該金屬粉末製造裝置確實能達成功效，然而考量到金屬粉末K製程效率，該導流單元91出口處的直徑大多為2~8毫米，若是為了該金屬液I的流量而增加該導流單元91出口處的直徑，則會因為流量過大而來不及被該霧化單元93衝碎便直接下落，進而混合下方之該等金屬粉末K，使得金屬粉末製程功虧一簣。The existing metal powder manufacturing device can indeed achieve the effect. However, considering the efficiency of the metal powder K process, the diameter of the outlet of the diversion unit 91 is mostly 2-8 mm. If the flow of the molten metal I is increased, the diversion The diameter at the outlet of the unit 91 will fall directly before being crushed by the atomizing unit 93 due to the excessive flow rate, and then mix the metal powders K below, making the metal powder manufacturing process fail.

除了直徑過大會造成問題以外，若是該導流單元91出口處的直徑過小，金屬液I會因為出口處直徑過小而流量下降，容易直接在出口處便遇冷凝結，進而阻塞該導流單元91而使得金屬粉末製程停擺，此時便需要進行該導流單元91的替換作業，耗時且耗費零件，使得製程的成本上升，因此，產業界亟欲找出兼顧霧化效率高且不易凝結並阻塞的金屬粉末製造裝置及方法。In addition to the problem caused by the excessive diameter, if the diameter at the outlet of the diversion unit 91 is too small, the flow rate of the molten metal I will decrease due to the too small diameter at the outlet, and it is easy to directly condense at the outlet and block the diversion unit 91. As a result, the metal powder manufacturing process is shut down. At this time, the diversion unit 91 needs to be replaced, which is time-consuming and costly in parts, which increases the cost of the manufacturing process. Therefore, the industry is eager to find a combination of high atomization efficiency and low condensation Clogged metal powder manufacturing device and method.

因此，本發明之目的，即在提供一種霧化效率高且不易凝結並阻塞的金屬粉末製造裝置及方法。Therefore, the object of the present invention is to provide a metal powder manufacturing device and method that has high atomization efficiency and is not easy to condense and block.

於是，本發明金屬粉末製造裝置，包含一適用於連接一適用於熔融金屬而提供金屬液之熔爐的供液單元、一設置於該供液單元中的控制單元，及一設置於該供液單元下方的霧化單元。Therefore, the metal powder manufacturing device of the present invention includes a liquid supply unit suitable for connecting to a melting furnace suitable for supplying molten metal, a control unit provided in the liquid supply unit, and a liquid supply unit provided in the liquid supply unit The atomization unit below.

該供液單元包括一用以輸送金屬液的導流管。The liquid supply unit includes a guide tube for conveying molten metal.

該控制單元包括一穿伸於該導流管並與管壁間隔而界定出一環狀之加熱空間的芯棒，及一設置於該芯棒中並用以加熱該金屬液的加熱件。The control unit includes a core rod extending through the guide tube and spaced from the tube wall to define an annular heating space, and a heating element arranged in the core rod and used for heating the molten metal.

該霧化單元用以向該金屬液噴射惰性氣體而形成多個金屬粉末，並與該供液單元及該控制單元相配合形成一連通該加熱空間的製粉空間。The atomization unit is used for spraying inert gas to the molten metal to form a plurality of metal powders, and cooperates with the liquid supply unit and the control unit to form a powder making space connected to the heating space.

而本發明之一另一目的，即在提供一種金屬粉末製造方法，包含一輸送來自一熔爐之高溫的金屬液的供液步驟、一改變該金屬液流動的控制步驟，及一向該金屬液噴射惰性氣體而形成多個金屬粉末的霧化步驟。Another object of the present invention is to provide a method for manufacturing metal powder, which includes a step of supplying molten metal with a high temperature from a furnace, a step of controlling the flow of the molten metal, and a step of spraying the molten metal. Inert gas to form a plurality of metal powder atomization steps.

該控制步驟包括一利用前述之芯棒使該金屬液以環狀截面流動的環流流程，及一由內而外加熱該金屬液的加熱流程。The control step includes a circulating flow process that uses the aforementioned core rod to make the molten metal flow in an annular section, and a heating process that heats the molten metal from the inside to the outside.

本發明之功效在於：藉由控制步驟之環流流程操縱該芯棒，能於該加熱空間中使該金屬液以環狀截面流動，配合該加熱流程使用該加熱件由內而外均勻加熱該金屬液，即可達成兼顧流量且加熱均勻的效果，避免製程因該金屬液凝結或阻塞而停止，使得進行該霧化步驟時能以更高的效率產出該等金屬粉末。The effect of the present invention is that the mandrel can be made to flow in the heating space with an annular cross-section through the circulation process of the control step, and the heating element is used to uniformly heat the metal from the inside to the outside in conjunction with the heating process. The liquid can achieve the effect of taking into account the flow rate and heating uniformly, avoiding the stopping of the manufacturing process due to the condensation or blockage of the molten metal, so that the metal powder can be produced with higher efficiency during the atomization step.

在本發明被詳細描述之前，應當注意在以下的說明內容中，類似的元件是以相同的編號來表示。Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same numbers.

參閱圖2，本發明金屬粉末製造裝置之第一實施例，包含一適用於連接一用於熔融金屬而提供金屬液L之熔爐的供液單元1、一設置於該供液單元1中的控制單元2、一設置於該供液單元1下方的霧化單元3，及一資訊連接於該控制單元2，並用以驅動該控制單元2在該供液單元1中移動的驅動單元4。Referring to FIG. 2, the first embodiment of the metal powder manufacturing device of the present invention includes a liquid supply unit 1 suitable for connecting to a furnace for molten metal to provide molten metal L, and a control set in the liquid supply unit 1 Unit 2, an atomizing unit 3 arranged below the liquid supply unit 1, and a drive unit 4 that is connected to the control unit 2 and used to drive the control unit 2 to move in the liquid supply unit 1.

該供液單元1包括一用以輸送金屬液L的導流管11。該供液單元1為所屬技術領域常用的導流管11，具有一定機械強度，高耐熱性，以及不易與金屬液L產生化學反應的特性。而如上所述，為了供該控制單元2設置，該導流管11的管徑較佳應大於該控制單元2。The liquid supply unit 1 includes a draft tube 11 for conveying molten metal L. As shown in FIG. The liquid supply unit 1 is a guide tube 11 commonly used in the technical field, which has certain mechanical strength, high heat resistance, and is not easy to chemically react with the molten metal L. As mentioned above, in order for the control unit 2 to be installed, the diameter of the guide tube 11 should preferably be larger than the control unit 2.

該控制單元2設置於該導流管11中，並包括一穿伸於該導流管11並與管內壁面間隔而界定出一截面呈環狀之加熱空間20的芯棒21，及一設置於該芯棒21中並用以加熱該金屬液L的加熱件22。其中，該芯棒21具有一呈縱向貫穿狀並適用於噴射惰性氣體G或是混合製備複合材料粉末之惰性氣體G的噴氣孔23，及多個軸向延伸且自外表面徑向往內凹設而呈長條狀並與該加熱空間20連通之加速流道24。需要特別說明的是，該加熱件22較佳為感應加熱線圈，且由於金屬液L處於高溫狀態，因此該控制單元2之材質應具有耐高溫、一定機械強度，且不會與該金屬液L產生化學反應之特性，如鎂合金、鋁，或是鐵基合金。The control unit 2 is arranged in the draft tube 11, and includes a core rod 21 extending through the draft tube 11 and spaced from the inner wall surface of the tube to define a heating space 20 with an annular cross section, and a setting The heating element 22 in the core rod 21 and used to heat the molten metal L. Wherein, the core rod 21 has a longitudinally penetrating jet hole 23 suitable for injecting inert gas G or mixing inert gas G for preparing composite material powder, and a plurality of axially extending and radially inwardly recessed from the outer surface The accelerating flow channel 24 is a long strip and communicates with the heating space 20. It should be particularly noted that the heating element 22 is preferably an induction heating coil, and since the molten metal L is in a high temperature state, the material of the control unit 2 should have high temperature resistance, a certain mechanical strength, and will not interact with the molten metal L. Features that produce chemical reactions, such as magnesium alloys, aluminum, or iron-based alloys.

具體而言，該複合材料粉末可為功能性金屬粉末，如抗菌銅、準晶粉體、磁性粉體、靶材，及熱電材料；或是生醫用金屬粉末，如降解非晶鎂、降解高熵鎂；結構耐磨用金屬粉末，高熵研磨粉、高矽鋁粉、焊覆粉末；以及積層製造金屬粉末，如鋁粉或鎂粉。使用者可依照自身複合材料粉末之製程需求來調整金屬液的選用，或是上述複合材料粉末的種類。Specifically, the composite material powder can be functional metal powder, such as antibacterial copper, quasicrystalline powder, magnetic powder, target material, and thermoelectric material; or biomedical metal powder, such as degradation of amorphous magnesium, degradation High-entropy magnesium; metal powder for structural wear resistance, high-entropy grinding powder, high-silica aluminum powder, welding coating powder; and layered manufacturing metal powder, such as aluminum powder or magnesium powder. The user can adjust the selection of the molten metal or the type of the above-mentioned composite powder according to the requirements of the manufacturing process of the composite powder.

該霧化單元3用以向該金屬液L噴射惰性氣體G，而將該金屬液L衝碎成多個金屬液滴，再將該等金屬液滴氣化冷卻而內聚凝結形成多個金屬粉末P，並與該供液單元1及該控制單元2相配合形成一連通該加熱空間20的製粉空間31。The atomization unit 3 is used to spray an inert gas G to the molten metal L, and crush the molten metal L into a plurality of metal droplets, and then the metal droplets are vaporized and cooled to internally condense and form a plurality of metals. The powder P cooperates with the liquid supply unit 1 and the control unit 2 to form a powder making space 31 communicating with the heating space 20.

該驅動單元4包括一驅動該芯棒21上下移動的上下驅動件41、一驅動該芯棒21旋轉的旋轉驅動件42，及一藉由超音波驅動該芯棒21震盪的震盪驅動件43。具體來說，該上下驅動件41及該旋轉驅動件42為一可驅動該芯棒21上下移動或是旋轉的伺服馬達或是線性馬達；而該震盪驅動件43則是一超音波震盪器。The driving unit 4 includes an upper and lower driving member 41 for driving the core rod 21 to move up and down, a rotating driving member 42 for driving the core rod 21 to rotate, and an oscillating driving member 43 for driving the core rod 21 to oscillate by ultrasonic waves. Specifically, the upper and lower driving member 41 and the rotation driving member 42 are a servo motor or a linear motor that can drive the mandrel 21 to move up and down or to rotate; and the oscillating driving member 43 is an ultrasonic oscillator.

參閱圖2、3，以下將進一步說明使用該第一實施例執行本發明金屬粉末製造方法的一方法實施例，包含一藉由該導流管11輸送來自一熔爐之高溫的該金屬液L至該加熱空間20中的供液步驟5、一改變該金屬液L流動形狀的控制步驟6，及一利用前述之該霧化單元3向該金屬液L噴射惰性氣體G的霧化步驟7。Referring to FIGS. 2 and 3, the following will further describe an embodiment of a method for implementing the metal powder manufacturing method of the present invention using the first embodiment, including a method of transporting the high-temperature molten metal L from a furnace through the draft tube 11 to A liquid supply step 5 in the heating space 20, a control step 6 of changing the flow shape of the molten metal L, and an atomization step 7 of spraying an inert gas G to the molten metal L using the aforementioned atomizing unit 3.

其中，該控制步驟6包括一利用該芯棒21改變流體形狀而使該金屬液L呈環狀截面地向下流動的環流流程61、一利用前述之該加熱件22由內而外持續加熱該金屬液L而不致遇冷凝結的加熱流程62，及一利用來自該芯棒21鄰近該加速流道24之表面的摩擦力，結合受該驅動單元4驅動而上下旋轉移動或超音波震盪的該芯棒21的驅動流程63。此外，藉由該加速流道24的設計可增加金屬液L與該芯棒21的接觸面積，進而提升對該金屬液L的加熱效果。該金屬液L將會受到該加熱件22加熱而保持熱度，並受到該芯棒21表面的摩擦力帶動並提升動能而加速通過該加速流道24，再被該霧化單元3及該噴氣孔23所噴出的惰性氣體G衝碎成該等金屬液滴或是複合材料金屬液滴，並氣化而內聚凝結成該等金屬粉末P。Wherein, the control step 6 includes a circulation process 61 that uses the mandrel 21 to change the fluid shape so that the molten metal L flows downward in an annular section, and uses the aforementioned heating element 22 to continuously heat the molten metal from the inside to the outside. The heating process 62 of the molten metal L without encountering condensation, and the use of friction from the surface of the mandrel 21 adjacent to the acceleration channel 24, combined with the driving unit 4 to rotate up and down or ultrasonically oscillate. The driving process 63 of the core rod 21. In addition, the design of the accelerating flow channel 24 can increase the contact area between the molten metal L and the core rod 21, thereby improving the heating effect of the molten metal L. The molten metal L will be heated by the heating element 22 to maintain heat, and will be driven by the frictional force on the surface of the mandrel 21 and increase kinetic energy to accelerate through the accelerating flow channel 24, and then by the atomization unit 3 and the jet hole The inert gas G sprayed by 23 is broken into the metal droplets or composite metal droplets, and vaporized and internally condensed to form the metal powders P.

值得一提的是，該第一實施例相較於現有之該金屬粉末製造裝置，除了藉由該芯棒21調整該金屬液L的形狀以及保持熱度跟動能而不致凝結，還能夠藉由該噴氣孔23增加噴射該惰性氣體G的管道，進一步增加該惰性氣體G衝碎該金屬液L的效率，且配合調整該惰性氣體G中複合金屬材料粉末的含量，還能夠藉由該等複合金屬材料粉末與該等金屬液滴結合，而產生不同性質及功能的金屬粉末P，提升製造該金屬粉末P種類的多樣性。最重要的是，該霧化單元3只要持續運作而不需在過程中執行任何調整，僅需調整該控制單元2即可達成所述功效，使得調整的機制更加單純且易於操作。It is worth mentioning that, compared with the existing metal powder manufacturing device, the first embodiment can not only adjust the shape of the molten metal L by the mandrel 21 and maintain the heat and kinetic energy without condensation, but also can use the The gas injection hole 23 increases the pipe for injecting the inert gas G to further increase the efficiency of the inert gas G to smash the molten metal L, and adjust the content of the composite metal material powder in the inert gas G. The material powder is combined with the metal droplets to produce metal powders P with different properties and functions, which enhances the variety of types of metal powders P produced. The most important thing is that as long as the atomization unit 3 continues to operate without performing any adjustments in the process, only the control unit 2 needs to be adjusted to achieve the effect, making the adjustment mechanism simpler and easier to operate.

參閱圖4，本發明金屬粉末製造裝置之一第二實施例，該第二實施例之結構與機制實質上與該第一實施例相近，差別在於該加速流道24的態樣，該第二實施例之該芯棒21的該加速流道24是軸向圍繞且自外表面徑向往內凹設該芯棒21而呈螺旋延伸狀並與該加熱空間20連通，也因為該加速流道24使該芯棒21表面產生起伏段差面，進一步提升該芯棒21整體相對於該金屬液L的摩擦力，當該驅動單元4驅使該芯棒21移動時，該芯棒21表面也會進一步帶動該金屬液L加速流動，達成與該第一實施例相同的效果，並提供給使用者另一種選擇的態樣。4, a second embodiment of the metal powder manufacturing apparatus of the present invention. The structure and mechanism of the second embodiment are substantially similar to those of the first embodiment. The difference lies in the state of the accelerating flow channel 24 and the second embodiment. In the embodiment, the acceleration flow passage 24 of the mandrel 21 is axially surrounded and the mandrel 21 is recessed radially inward from the outer surface to form a spiral extending shape and communicate with the heating space 20, also because the acceleration flow passage 24 The surface of the mandrel 21 is caused to produce undulating sections to further increase the friction force of the mandrel 21 with respect to the molten metal L. When the drive unit 4 drives the mandrel 21 to move, the surface of the mandrel 21 will also further drive The molten metal L accelerates the flow, achieving the same effect as the first embodiment, and providing the user with an alternative aspect.

綜上所述，本發明金屬粉末製造裝置及方法，藉由控制步驟6之環流流程61操縱該芯棒21於該加熱空間20使該金屬液L以環狀截面流動，並配合該加熱流程62使用該加熱件22由內而外均勻加熱該金屬液L，再結合該加速流道24及該驅動單元4，在該驅動步驟中提升該芯棒21相對於金屬液L的摩擦力，達成兼顧金屬液L流量且受熱均勻而不致凝結的效果，此外，藉由該加速流道24的設計可增加金屬液L與該芯棒21的接觸面積，進而提升對該金屬液L的加熱效果。除此以外，結合該噴氣孔23以及複合金屬粉末的設置，不只能提升該霧化步驟7產出金屬粉末P的效率，還能夠提升產出金屬粉末的種類。故確實能達成本發明之目的。In summary, the metal powder manufacturing device and method of the present invention controls the circulation process 61 of step 6 to manipulate the mandrel 21 in the heating space 20 to make the molten metal L flow in an annular section, and cooperate with the heating process 62 The heating element 22 is used to uniformly heat the molten metal L from the inside to the outside, and combined with the acceleration flow channel 24 and the driving unit 4, the friction force of the core rod 21 with respect to the molten metal L is increased during the driving step to achieve a balance The flow rate of the molten metal L is uniform without condensation. In addition, the design of the accelerating flow channel 24 can increase the contact area between the molten metal L and the core rod 21, thereby improving the heating effect of the molten metal L. In addition, the combination of the air injection hole 23 and the composite metal powder can not only improve the efficiency of the metal powder P produced in the atomization step 7, but also increase the type of metal powder produced. So it can indeed achieve the purpose of the invention.

惟以上所述者，僅為本發明之實施例而已，當不能以此限定本發明實施之範圍，凡是依本發明申請專利範圍及專利說明書內容所作之簡單的等效變化與修飾，皆仍屬本發明專利涵蓋之範圍內。However, the above are only examples of the present invention. When the scope of implementation of the present invention cannot be limited by this, all simple equivalent changes and modifications made in accordance with the scope of the patent application of the present invention and the content of the patent specification still belong to This invention patent covers the scope.

G:惰性氣體 P:金屬粉末 L:金屬液 1:供液單元 11:導流管 2:控制單元 20:加熱空間 21:芯棒 22:加熱件 23:噴氣孔 24:加速流道 3:霧化單元 31:製粉空間 4:驅動單元 41:上下驅動件 42:旋轉驅動件 43:震盪驅動件 5:供液步驟 6:控制步驟 61:環流流程 62:加熱流程 63:驅動流程 7:霧化步驟G: inert gas P: Metal powder L: molten metal 1: Liquid supply unit 11: Draft tube 2: control unit 20: Heating space 21: Mandrel 22: heating element 23: Fumarole 24: Accelerate the runner 3: Atomization unit 31: Flour milling space 4: drive unit 41: Up and down drive 42: Rotary drive 43: Oscillation drive 5: Liquid supply step 6: Control steps 61: Circulation process 62: Heating process 63: drive process 7: Atomization step

本發明之其他的特徵及功效，將於參照圖式的實施方式中清楚地呈現，其中：圖1是一示意圖，說明現有之一金屬粉末製造裝置；圖2是一示意圖，說明本發明金屬粉末製造裝置之第一實施例；圖3是一方塊流程圖，說明本發明金屬粉末製造方法之一方法實施例；及圖4是一示意圖，說明本發明金屬粉末製造裝置之第二實施例。 Other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, in which: Figure 1 is a schematic diagram illustrating an existing metal powder manufacturing device; Figure 2 is a schematic diagram illustrating the first embodiment of the metal powder manufacturing apparatus of the present invention; Figure 3 is a block flow diagram illustrating one method embodiment of the method of manufacturing metal powder of the present invention; and Fig. 4 is a schematic diagram illustrating the second embodiment of the metal powder manufacturing apparatus of the present invention.

G:惰性氣體 G: inert gas

P:金屬粉末 P: Metal powder

L:金屬液 L: molten metal

1:供液單元 1: Liquid supply unit

11:導流管 11: Draft tube

2:控制單元 2: control unit

20:加熱空間 20: Heating space

21:芯棒 21: Mandrel

22:加熱件 22: heating element

23:噴氣孔 23: Fumarole

24:加速流道 24: Accelerate the runner

3:霧化單元 3: Atomization unit

31:製粉空間 31: Flour milling space

4:驅動單元 4: drive unit

41:上下驅動件 41: Up and down drive

42:旋轉驅動件 42: Rotary drive

43:震盪驅動件 43: Oscillation drive

Claims

一種金屬粉末製造裝置，包含：一供液單元，適用於連接一適用於熔融金屬而提供金屬液的熔爐，並包括一用以輸送金屬液的導流管；一控制單元，設置於該導流管中，包括一穿伸於該導流管並與管壁間隔而界定出一環狀之加熱空間的芯棒，及一設置於該芯棒中並用以加熱該金屬液的加熱件；及一霧化單元，設置於該供液單元下方，並與該供液單元及該控制單元相配合形成一連通該加熱空間的製粉空間，用以向該金屬液噴射惰性氣體而形成多個金屬粉末。 A metal powder manufacturing device, including: A liquid supply unit, suitable for connecting to a melting furnace suitable for molten metal to provide molten metal, and including a draft tube for conveying molten metal; A control unit is arranged in the draft tube, including a core rod extending through the draft tube and spaced from the tube wall to define an annular heating space, and a core rod arranged in the core rod for heating The heating element of the molten metal; and An atomizing unit is arranged below the liquid supply unit and cooperates with the liquid supply unit and the control unit to form a powder-making space connected to the heating space for spraying inert gas to the molten metal to form a plurality of metal powders .

如請求項1所述的金屬粉末製造裝置，該控制單元之該芯棒還具有一呈縱向貫穿狀並連通該製粉空間且適用於噴射惰性氣體的噴氣孔。In the metal powder manufacturing device according to claim 1, the core rod of the control unit further has a jet hole that is longitudinally penetrating and communicates with the powder making space and is suitable for injecting inert gas.

如請求項1所述的金屬粉末製造裝置，該控制單元之該芯棒還具有一呈縱向貫穿狀並連通該製粉空間且適用於噴射混合製備複合材料粉末之惰性氣體的噴氣孔。In the metal powder manufacturing device according to claim 1, the core rod of the control unit further has a jet hole that is longitudinally penetrating and communicates with the powder making space and is suitable for spraying and mixing inert gas for preparing composite material powder.

如請求項1所述的金屬粉末製造裝置，還包含一資訊連接於該控制單元，並用以驅動該控制單元在該供液單元中移動的驅動單元，該驅動單元包括一用以驅動該芯棒上下移動的上下驅動件。The metal powder manufacturing device according to claim 1, further comprising a drive unit connected to the control unit and used to drive the control unit to move in the liquid supply unit, and the drive unit includes a drive unit for driving the mandrel Up and down driving parts that move up and down.

如請求項1所述的金屬粉末製造裝置，還包含一資訊連接於該控制單元，並用以驅動該控制單元在該供液單元中移動的驅動單元，該驅動單元包括一驅動該芯棒旋轉的旋轉驅動件。The metal powder manufacturing device according to claim 1, further comprising a drive unit connected to the control unit and used to drive the control unit to move in the liquid supply unit, and the drive unit includes a drive unit for driving the mandrel to rotate Rotation drive.

如請求項1所述的金屬粉末製造裝置，還包含一資訊連接於該控制單元，並用以驅動該控制單元在該供液單元中移動的驅動單元，該驅動單元包括一藉由超音波驅動該芯棒震盪的震盪驅動件。The metal powder manufacturing device according to claim 1, further comprising a drive unit connected to the control unit and used to drive the control unit to move in the liquid supply unit, and the drive unit includes a drive unit driven by ultrasonic waves. The oscillating driving part of the core rod oscillating.

如請求項4~6中任一項所述的金屬粉末製造裝置，其中，該控制單元之該芯棒具有至少一軸向延伸且自外表面徑向往內凹設而呈長條狀並與該加熱空間連通之加速流道。The metal powder manufacturing device according to any one of claims 4 to 6, wherein the mandrel of the control unit has at least one axial extension and is recessed radially inward from the outer surface to form a long strip and connect with the The accelerating flow channel connected to the heating space.

如請求項4~6中任一項所述的金屬粉末製造裝置，其中，該控制單元之該芯棒具有一軸向圍繞且自外表面徑向往內凹設該芯棒而呈螺旋延伸狀並與該加熱空間連通之加速流道。The metal powder manufacturing device according to any one of claims 4 to 6, wherein the core rod of the control unit has an axially surrounding and the core rod is recessed radially inward from the outer surface to form a spirally extending shape and An acceleration flow channel connected to the heating space.

一種金屬粉末製造方法，包含：一供液步驟，輸送來自一熔爐之高溫金屬液；一控制步驟，包括一利用一芯棒使該金屬液以環狀截面流動的環流流程，及一由內而外加熱該金屬液的加熱流程；及一霧化步驟，向該金屬液噴射惰性氣體而形成多個金屬粉末。 A method for manufacturing metal powder, including: A liquid supply step, conveying high-temperature molten metal from a furnace; A control step includes a circulating flow process that uses a core rod to make the molten metal flow in an annular section, and a heating process that heats the molten metal from the inside out; and In an atomization step, an inert gas is sprayed to the molten metal to form a plurality of metal powders.

如請求項9所述的金屬粉末製造方法，其中，該控制步驟還包括一驅動該芯棒移動的驅動流程。The metal powder manufacturing method according to claim 9, wherein the control step further includes a driving process for driving the mandrel to move.