WO2023115673A1 - 一种电预热式等离子体雾化装置 - Google Patents

一种电预热式等离子体雾化装置 Download PDF

Info

Publication number
WO2023115673A1
WO2023115673A1 PCT/CN2022/072432 CN2022072432W WO2023115673A1 WO 2023115673 A1 WO2023115673 A1 WO 2023115673A1 CN 2022072432 W CN2022072432 W CN 2022072432W WO 2023115673 A1 WO2023115673 A1 WO 2023115673A1
Authority
WO
WIPO (PCT)
Prior art keywords
wire
straightening
wire feeding
hook
wires
Prior art date
Application number
PCT/CN2022/072432
Other languages
English (en)
French (fr)
Inventor
严圣军
李要建
范晨颖
孙钟华
钟雷
裴思鲁
Original Assignee
江苏天楹等离子体科技有限公司
中国天楹股份有限公司
江苏天楹环保能源成套设备有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 江苏天楹等离子体科技有限公司, 中国天楹股份有限公司, 江苏天楹环保能源成套设备有限公司 filed Critical 江苏天楹等离子体科技有限公司
Publication of WO2023115673A1 publication Critical patent/WO2023115673A1/zh

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/02—Making metallic powder or suspensions thereof using physical processes
    • B22F9/14—Making metallic powder or suspensions thereof using physical processes using electric discharge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y40/00—Auxiliary operations or equipment, e.g. for material handling

Definitions

  • the invention relates to a plasma atomization device, in particular to an electric preheating plasma atomization device, which belongs to the technical field of 3D additive manufacturing.
  • 3D printing metal materials are widely used in aerospace, chemical industry, medical equipment and other fields.
  • the main methods for domestic enterprises to produce metal powder are vacuum gas atomization (VIGA), electrode induction melting gas atomization (EIGA), plasma rotating electrode method (PREP) and plasma atomization method (PA).
  • VGA vacuum gas atomization
  • EIGA electrode induction melting gas atomization
  • PREP plasma rotating electrode method
  • PA plasma atomization method
  • the production efficiency of the gas atomization method is high, but the obtained powder product has a wide particle size distribution range and poor sphericity; the powder product obtained by the plasma rotating electrode atomization method has a high sphericity and a smooth surface, but the average particle size is large, and the fine powder is collected The yield is low.
  • the plasma atomization method uses the thermal energy of the high-temperature and high-speed plasma jet to melt the metal material, and then uses the mechanical energy of the jet to break and atomize the molten metal, and the atomized droplets are finally condensed into spherical particles under the action of surface tension during the falling process.
  • the produced powder has the advantages of concentrated particle size distribution, good fluidity and high purity.
  • the plasma atomization method has low energy efficiency. The reason is that the melting of metal materials requires a lot of heat, and the contact time between the material and the plasma jet is extremely short. The heat energy of the plasma jet cannot be fully used to heat the material, but an additional auxiliary heat source is required.
  • Patent CN108025364A adopts the structure of one torch and three torches, and uses induction heating to preheat the metal wire, and the unit energy consumption is 31.2kWh/kg; Preheating, the unit energy consumption is reduced to 4kWh/kg.
  • Titanium alloys are generally non-magnetic or weakly magnetic. The use of electromagnetic induction heating can only rely on eddy current loss to generate heat. Therefore, compared with magnetic materials, the heating efficiency is low, the power consumption is large, and the equipment is more complicated; while the arc heating speed is fast and the efficiency is high, but it will increase Instability of the plasma jet and arc in the contact zone.
  • the technical problem to be solved by the present invention is to provide an electric preheating plasma atomization device, which improves the preheating efficiency of the metal wire and the overall energy consumption utilization rate of the wire gas atomization.
  • An electric preheating plasma atomization device is characterized in that it includes at least two groups of wires, a power supply and at least one plasma jet generator, and one end of the two groups of wires intersects at the nozzle of the plasma jet generator , each group of wires is continuously fed to the nozzle of the plasma jet generator through the wire feeding mechanism, and the two poles of a power supply are respectively connected to the two groups of wires by sliding contact.
  • the wire feeding mechanism includes a wire unwinding device and a wire feeding device
  • the wire unwinding device includes a wire disc, an unwinding bracket, and an unwinding shaft, and one end of the unwinding shaft is rotatably arranged on the unwinding bracket,
  • the through hole in the center of the wire disc is set on the unwinding shaft and the other end of the unwinding shaft is provided with an external thread
  • the nut is set on the other end of the unwinding shaft and threadedly connected with the unwinding shaft to lock and fix the wire disc .
  • the wire feeding device includes a wire feeding base, a lifting pressure block, a first wire feeding wheel, a second wire feeding wheel, a wire feeding motor, a first pressing wheel, a second pressing wheel, a first sliding rod, a second
  • the lifting pressure block is slidably arranged in the chute of the wire feeding base
  • the first wire feeding wheel and the second wire feeding The wheels are arranged side by side on the wire feeding base, and both the first wire feeding wheel and the second wire feeding wheel are connected with the wire feeding motor fixed on the lower side of the wire feeding base through a belt.
  • the second pressure roller On the step-down block and the first pressure roller is located on the upper side of the first wire feed roller, the second pressure roller is located on the upper side of the second wire feed roller, the lower ends of the first sliding rod and the second sliding rod are fixed on the upper side of the lifting pressure block and the second
  • the upper ends of the first sliding rod and the second sliding rod pass through the upper end of the wire feeding base and are slidably arranged on the wire feeding base, the first spring is sleeved on the first sliding rod, and the second spring is sleeved on the second sliding rod.
  • the wire feeding mechanism also includes a wire straightening mechanism
  • the wire straightening mechanism includes a straightening bracket, a plurality of upper side straightening wheels, a plurality of lower side straightening wheels, and a plurality of upper side straightening wheels along the The horizontal direction is equally spaced on the straightening bracket, and the multiple lower side straightening wheels are arranged on the straightening bracket at equal intervals along the horizontal direction, and the multiple lower side straightening wheels and the multiple upper side straightening wheels are staggered from each other, and the multiple Each of the upper straightening wheel and the plurality of lower straightening wheels is provided with a screw adjustment mechanism.
  • the screw adjustment mechanism includes a straightening wheel slider, a vertical screw and a screw knob
  • the rear side of the straightening bracket is provided with a chute along the vertical direction
  • the straightening wheel slider is slidably arranged in the chute
  • One end of the vertical screw rod is rotated and arranged on the upper side of the straightening wheel slider, and the other end of the vertical screw rod passes through the end face of the straightening bracket and is threadedly connected with the straightening bracket, and the screw knob is fixed on the other end of the vertical screw rod.
  • the power supply includes a low-voltage high-current transformer and conductive terminals, the two ends of the primary coil of the low-voltage high-current transformer are respectively connected to the neutral wire and live wire of 220V mains, and the two ends of the secondary coil of the low-voltage high-current transformer are respectively connected to a
  • the conductive terminal is slidably arranged on two groups of wire materials.
  • the conductive terminal includes a hook-shaped main body, the inner diameter of the hook body at the upper end of the hook-shaped main body matches the diameter of the wire material, the upper end of the hook-shaped main body is hooked on the outside of the wire material, and the lower end of the hook-shaped main body passes through a thick copper strip or copper strip It is connected to both ends of the secondary coil of the low-voltage high-current transformer.
  • the upper end of the hook-shaped main body is also provided with a hook tooth, one end of the hook tooth is hinged on the upper end of the hook-shaped main body, and a torsion spring is arranged on the hinge shaft between the hook tooth and the hook-shaped main body.
  • an ammeter and a power indicator light are also provided on the circuit between the power supply and the conductive terminal.
  • the corundum sleeves also includes two corundum sleeves, the two corundum sleeves are arranged along the conveying direction of the two groups of wires, and the corundum sleeves are fixed on the housing of the atomizing device.
  • the present invention has the following advantages and effects:
  • the present invention utilizes the characteristics of poor thermal conductivity and high resistivity of titanium alloy wire, and uses two groups of wires to cooperate with power supply for short-circuit heating.
  • the heating speed of the wire is fast, and the heat loss is small, which improves the utilization rate of energy;
  • the power supply of the present invention only needs to use a power frequency power supply, the heating structure is simple, and the heating temperature is easy to control;
  • the end of the wire can be closer to the center of the plasma jet generator, the heat utilization rate is better, and the contact area of the wire is small, and the contact resistance is at least 50 times that under normal conditions.
  • the contact area heats up faster and more seriously, which can achieve the goal of preheating first, and improve the heating efficiency; and the current is large and the contact area is small, the surface charge density is high, and the repulsive force of the charge interaction when the droplet is formed can offset part of the surface Tension can reduce the atomization resistance, and at the same time, it can also reduce the particle size of the powder to obtain a finer atomized powder.
  • Fig. 1 is a schematic diagram of an electric preheating plasma atomization device of the present invention.
  • Fig. 2 is a top view of an electric preheating plasma atomization device of the present invention.
  • Fig. 3 is a schematic diagram of the wire feeding device of the present invention.
  • Fig. 4 is a schematic diagram of the wire feeding mechanism and the wire straightening mechanism of the present invention.
  • Fig. 5 is a schematic diagram of the power supply of the present invention.
  • Fig. 6 is a schematic diagram of the conductive terminal of the present invention.
  • an electric preheating plasma atomization device of the present invention comprises at least two groups of wire materials 1, a power supply 2 and at least one plasma jet generator 3, and the two groups of wire materials 1 One end intersects at the nozzle of the plasma jet generator 3, and each group of wire materials 1 is continuously fed to the nozzle of the plasma jet generator 3 through the wire feeding mechanism, and the two poles of a power supply 2 slide with the two groups of wire materials 1 respectively. Touch to connect.
  • the power supply 2 and the two groups of wires 1 form a complete circuit. Due to the poor thermal conductivity and high resistivity of the titanium alloy wire itself, the circuit formed by the wire 1 can be directly regarded as a resistance, and the power supply energizes the resistance. Heating, and this heating method has a very high utilization rate of electric energy, fast heating speed, high energy utilization rate, and the overall structure is extremely simple. Compared with electromagnetic heating and other methods, the cost is greatly reduced and the effect of preheating is better. good.
  • the wire feeding mechanism includes a wire unwinding device 4 and a wire feeding device 5, and the wire unwinding device 4 includes a wire disc 6, an unwinding bracket 7, an unwinding shaft 8, and one end of the unwinding shaft 8
  • the rotation is arranged on the unwinding support 7, the through hole in the center of the wire disc 6 is sleeved on the unwinding shaft 8 and the other end of the unwinding shaft 8 is provided with an external thread, and the nut is sleeved on the other end of the unwinding shaft 8 It is threadedly connected with the unwinding rotating shaft 8 and the wire material disc 6 is locked and fixed.
  • the wire feeding device 5 includes a wire feeding base 9, a lifting pressure block 10, a first wire feeding wheel 11, a second wire feeding wheel 12, a wire feeding motor 13, a first pressing wheel 14, a second pressing wheel Wheel 15, the first slide rod 16, the second slide rod 17, the first spring 18 and the second spring 19, the upper end of the wire feeding base 9 is provided with a chute along the vertical direction, and the lifting pressure block 10 is slidably arranged on the wire feeding base 9, the first wire feed roll 11 and the second wire feed roll 12 are arranged side by side on the wire feed base 9 and both the first wire feed roll 11 and the second wire feed roll 12 are fixed on the wire feed base 9 through a belt.
  • the wire feeding motor 13 on the lower side is connected, the first pressure roller 14 and the second pressure roller 15 are rotated and arranged on the lifting pressure block 10 and the first pressure roller 14 is located on the upper side of the first wire feeding roller 11, and the second pressure roller 15 is located on the upper side of the second wire feed roller 12, the lower ends of the first sliding rod 16 and the second sliding rod 17 are fixed on the upper side of the lift block 10 and the upper ends of the first sliding rod 16 and the second sliding rod 17 pass through the upper end of the wire feeding base 9 Slidingly arranged with the wire feeding base 9 , the first spring 18 is sleeved on the first sliding rod 16 , and the second spring 19 is sleeved on the second sliding rod 17 .
  • the first spring 18 and the second spring 19 exert downward elastic force on the lifting pressure block 10, so that the first pressure roller 14 and the second pressure roller 15 are respectively pressed against the first wire feed roller 11 and the second wire feed roller 12, to ensure that the wire feeding does not slip.
  • the wire feeding mechanism also includes a wire straightening mechanism 20, and the wire straightening mechanism 20 includes a straightening bracket 21, a plurality of upper side straightening wheels 22, a plurality of lower side straightening wheels 23, and a plurality of upper side straightening wheels 22 Arranged on the straightening support 21 at equal intervals along the horizontal direction, a plurality of lower side straightening wheels 23 are arranged on the straightening support 32 at equal intervals along the horizontal direction, and the plurality of lower side straightening wheels 23 and the plurality of upper side straightening wheels 22 are mutually staggered, and each of the multiple upper side straightening wheels 22 and the multiple lower side straightening wheels 23 is provided with a screw adjustment mechanism.
  • the screw adjustment mechanism comprises a straightening wheel slide block 24, a vertical screw rod 25 and a screw knob 26, and the rear side of the straightening support 21 has a chute along the vertical direction, and the straightening wheel slide block 24 is slidably arranged in the chute, One end of the vertical screw rod 25 is rotated and arranged on the upper side of the straightening wheel slider 24, the other end of the vertical screw rod 25 passes through the end face of the straightening bracket 21 and is threadedly connected with the straightening bracket 21, and the screw knob 26 is fixed on the other end of the vertical screw rod 25 Ends.
  • the wires are straightened through the upper and lower two sets of straightening wheels 22, and the height of each straightening wheel is adjusted at any time through the screw adjustment mechanism, so as to ensure the final straightening effect.
  • the power supply 2 includes a low-voltage high-current transformer 27 and a conductive terminal 28.
  • the two ends of the primary coil of the low-voltage high-current transformer 27 are respectively connected to the zero line and the live wire of the 220V commercial power, and the low-voltage high-current transformer 27
  • Both ends of the secondary coil are respectively connected to a conductive terminal 28
  • the conductive terminal 28 is slidably arranged on the two sets of wires 1 .
  • the conductive terminal 28 includes a hook-shaped main body 29.
  • the inner diameter of the hook body at the upper end of the hook-shaped main body 29 matches the diameter of the wire material 1.
  • the upper end of the hook-shaped main body 29 is hooked on the outside of the wire material 1.
  • the lower end of the hook-shaped main body 29 passes through a thick copper strip or The copper strips are connected to both ends of the secondary coil of the low-voltage high-current transformer.
  • the upper end of the hooked main body 29 is also provided with a hook tooth 30, one end of the hook tooth 30 is hinged on the upper end of the hooked main body 29 and the hinge shaft of the hook tooth 30 and the hooked main body 29 is provided with a torsion spring.
  • An ammeter 31 and a power indicator light 32 are also arranged on the circuit between the power supply 2 and the conductive terminal 28, and the current intensity can be monitored in real time by the ammeter 31, so as to facilitate the control of the power supply, thereby controlling the temperature of preheating, and the power indicator light 32 Then you can intuitively see whether the power supply forms a circuit. If the indicator light is not on, it means that the end of the wire is not in contact or the terminal is not in contact with the wire, and it needs to be adjusted in time.
  • An electric preheating plasma atomization device of the present invention also includes two corundum sleeves 33, the two corundum sleeves 33 are arranged along the conveying direction of the two groups of wires and the corundum sleeves 33 are fixed on the shell of the atomization device physically.
  • the angle ⁇ between the two corundum sleeves 33 is 30-90°, and the wire 1 is fixed by the corundum sleeves 33 so that the warp of the wire 1 will not be displaced or bent.
  • the corundum sleeve 33 extends from the outside of the furnace to the inside of the furnace.
  • the outside of the furnace is about 1m long, and the middle is sealed and fixed on the furnace cover of the atomization device shell with a flange, and it is ensured that the intersecting contact of the two wires 1 is located at the point where the plasma jet occurs. within 50mm directly below the nozzle of the device.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Plasma Technology (AREA)

Abstract

一种电预热式等离子体雾化装置，包含至少两组丝材（1）、一个电源（2）和至少一个等离子体射流发生器（3），两组丝材（1）的一端相交于等离子体射流发生器（3）的喷口处，每组丝材（1）分别通过送丝机构向等离子体射流发生器（3）的喷口处不间断送料，一个电源（2）的两极分别与两组丝材（1）滑触连接。电预热式等离子体雾化装置利用钛合金丝材导热性差、电阻率高的特性，采用两组丝材（1）配合电源（2）进行短路加热，丝材（1）加热速度快、热损耗小，提高了能量的利用率。

Description

一种电预热式等离子体雾化装置 技术领域
本发明涉及一种等离子体雾化装置，特别是一种电预热式等离子体雾化装置，属于3D增材制造技术领域。
背景技术
3D打印金属材料被广泛应用于航空航天、化工、医疗器械等领域。目前国内企业生产金属粉末的主要方法有真空气雾化(VIGA)、电极感应熔炼气雾化法(EIGA)、等离子旋转电极法(PREP)和等离子体雾化法(PA)。气雾化法生产效率高，但制得的粉末产品粒度分布范围宽，球形度差；等离子旋转电极雾化法制得的粉末产品球形度高，表面光滑，但平均粒径较大，细粉收得率低。
等离子体雾化法利用高温高速等离子体射流的热能将金属材料熔融，随后利用射流的机械能将熔融金属破碎、雾化，雾化液滴下落过程中在表面张力的作用下最终冷凝成球形颗粒。所产粉末具有粒径分布集中、流动性好、纯净度高等优点。但等离子体雾化法能效较低。原因在于金属材料熔融需要大量热量，而材料与等离子体射流接触时间极短，等离子体射流的热能未能被充分用于材料加热，反而需要额外的辅助热源。
专利CN108025364A采用一丝三炬的炬一丝结构，利用感应加热对金属丝材进行预加热，单位能耗31.2kWh/kg；专利TW202012074A采用一炬双丝的炬一丝结构，利用电弧加热对金属丝材进行预加热，单位能耗降低至4kWh/kg。钛合金一般无磁或弱磁，利用电磁感应加热只能依靠涡流损耗发热，因此对比磁性材料加热效率低、功耗大，且设备较复杂；而电弧加热速度快，效率较高，但会增加接触区域等离子体射流与电弧的不稳定性。
发明内容
本发明所要解决的技术问题是提供一种电预热式等离子体雾化装置，提高金属丝材预热效率和丝材气雾化整体的能耗利用率。
为解决上述技术问题，本发明所采用的技术方案是：
一种电预热式等离子体雾化装置，其特征在于：包含至少两组丝材、一个电源和至少一个等离子体射流发生器，两组丝材的一端相交于等离子体射流发生器的喷口处，每组丝材分别通过送丝机构向等离子体射流发生器的喷口处不间断送料，一个电源的两极分别与两组丝材滑触连接。
进一步地，所述送丝机构包含丝材放卷装置和送丝装置，丝材放卷装置包含丝材盘、放卷支架、放卷转轴，放卷转轴的一端转动设置在放卷支架上，丝材盘中心通孔套设在放卷转 轴上且放卷转轴的另一端端部设置有外螺纹，螺母套设在放卷转轴的另一端与放卷转轴螺纹连接将丝材盘锁紧固定。
进一步地，所述送丝装置包含送丝底座、升降压块、第一送丝轮、第二送丝轮、送丝电机、第一压轮、第二压轮、第一滑竿、第二滑竿、第一弹簧和第二弹簧，送丝底座的上端开有沿竖直方向的滑槽，升降压块滑动设置在送丝底座的滑槽内，第一送丝轮和第二送丝轮并列设置在送丝底座上并且第一送丝轮和第二送丝轮均通过皮带与固定在送丝底座下侧的送丝电机连接，第一压轮和第二压轮转动设置在升降压块上且第一压轮位于第一送丝轮上侧，第二压轮位于第二送丝轮上侧，第一滑竿和第二滑竿的下端固定在升降压块上侧且第一滑竿和第二滑竿的上端穿过送丝底座上端与送丝底座滑动设置，第一弹簧套设在第一滑竿上，第二弹簧套设在第二滑竿上。
进一步地，所述送丝机构还包含丝材校直机构，丝材校直机构包含校直支架、多个上侧校直轮、多个下侧校直轮，多个上侧校直轮沿水平方向等间距设置在校直支架上，多个下侧校直轮沿水平方向等间距设置在校直支架上且多个下侧校直轮与多个上侧校直轮相互错开，多个上侧校直轮和多个下侧校直轮的每个校直轮上均设置有螺杆调节机构。
进一步地，所述螺杆调节机构包含校直轮滑块、竖直螺杆和螺杆旋钮，校直支架的后侧开有沿竖直方向的滑槽，校直轮滑块滑动设置在滑槽内，竖直螺杆的一端转动设置在校直轮滑块上侧，竖直螺杆另一端穿过校直支架端面与校直支架螺纹连接，螺杆旋钮固定在竖直螺杆另一端端部。
进一步地，所述电源包含低压大电流变压器和导电端子，低压大电流变压器的初级线圈的两端分别连接220V市电的零线和火线，低压大电流变压器的次级线圈的两端分别连接一个导电端子，导电端子滑动设置在两组丝材上。
进一步地，所述导电端子包含钩状主体，钩状主体上端钩体的内径与丝材的直径匹配，钩状主体上端钩设在丝材的外侧，钩状主体下端通过粗铜带或者铜条与低压大电流变压器的次级线圈的两端连接。
进一步地，所述钩状主体上端端部还设置有一个钩牙，钩牙的一端铰接在钩状主体上端端部并且钩牙与钩状主体的铰轴上设置有扭簧。
进一步地，所述电源与导电端子之间回路上还设置有电流表和电源指示灯。
进一步地，还包含两根刚玉套管，两根刚玉套管沿两组丝材的输送方向设置且刚玉套管固定在雾化装置的壳体上。
本发明与现有技术相比，具有以下优点和效果：
1、本发明利用钛合金丝材导热性差、电阻率高的特性，采用两组丝材配合电源进行短 路加热，丝材加热速度快、热损耗小，提高了能量的利用率；
2、本发明电源只需要采用工频电源，加热结构简单，而且加热的温度容易控制；
3、本发明丝材端部你能够更加靠近等离子体射流发生器的中心，热利用率更好，而且丝材接触面积小，接触电阻至少为正常情况下的50倍，通入大电流时，接触区域发热更快更严重，能最先达到预热的目标问题，提高加热效率；而且电流大而接触面积小时，面电荷密度较高，液滴形成时电荷相互作用的排斥力能抵消一部分表面张力，减小雾化阻力，同时还能够减小粉末粒径，得到更细的雾化粉末。
附图说明
图1是本发明的一种电预热式等离子体雾化装置的示意图。
图2是本发明的一种电预热式等离子体雾化装置的俯视图。
图3是本发明的送丝装置的示意图。
图4是本发明的送丝机构和丝材校直机构的示意图。
图5是本发明的电源的示意图。
图6是本发明的导电端子的示意图。
具体实施方式
为了详细阐述本发明为达到预定技术目的而所采取的技术方案，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清晰、完整地描述，显然，所描述的实施例仅仅是本发明的部分实施例，而不是全部的实施例，并且，在不付出创造性劳动的前提下，本发明的实施例中的技术手段或技术特征可以替换，下面将参考附图并结合实施例来详细说明本发明。
如图1和2所示，本发明的一种电预热式等离子体雾化装置，包含至少两组丝材1、一个电源2和至少一个等离子体射流发生器3，两组丝材1的一端相交于等离子体射流发生器3的喷口处，每组丝材1分别通过送丝机构向等离子体射流发生器3的喷口处不间断送料，一个电源2的两极分别与两组丝材1滑触连接。这样，电源2与两组丝材1构成了一个完整的回路，由于钛合金丝材本身的导热性能差、电阻率高，这样可以直接将丝材1构成的回路视为电阻，电源对电阻通电进行加热，而这样的加热方式对电能的利用率极高，加热速度快，能量利用率高，而且整体的结构及其简单，相对于电磁加热等方式，大大降低了成本而且预热的效果更好。
如图3所示，送丝机构包含丝材放卷装置4和送丝装置5，丝材放卷装置4包含丝材盘6、放卷支架7、放卷转轴8，放卷转轴8的一端转动设置在放卷支架7上，丝材盘6中心通孔套 设在放卷转轴8上且放卷转轴8的另一端端部设置有外螺纹，螺母套设在放卷转轴8的另一端与放卷转轴8螺纹连接将丝材盘6锁紧固定。
如图4所示，送丝装置5包含送丝底座9、升降压块10、第一送丝轮11、第二送丝轮12、送丝电机13、第一压轮14、第二压轮15、第一滑竿16、第二滑竿17、第一弹簧18和第二弹簧19，送丝底座9的上端开有沿竖直方向的滑槽，升降压块10滑动设置在送丝底座9的滑槽内，第一送丝轮11和第二送丝轮12并列设置在送丝底座9上并且第一送丝轮11和第二送丝轮12均通过皮带与固定在送丝底座9下侧的送丝电机13连接，第一压轮14和第二压轮15转动设置在升降压块10上且第一压轮14位于第一送丝轮11上侧，第二压轮15位于第二送丝轮12上侧，第一滑竿16和第二滑竿17的下端固定在升降压块10上侧且第一滑竿16和第二滑竿17的上端穿过送丝底座9上端与送丝底座9滑动设置，第一弹簧18套设在第一滑竿16上，第二弹簧19套设在第二滑竿17上。通过第一弹簧18和第二弹簧19对升降压块10施加向下的弹力，从而使第一压轮14和第二压轮15分别压在第一送丝轮11和第二送丝轮12上，保证送丝不打滑。
送丝机构还包含丝材校直机构20，丝材校直机构20包含校直支架21、多个上侧校直轮22、多个下侧校直轮23，多个上侧校直轮22沿水平方向等间距设置在校直支架21上，多个下侧校直轮23沿水平方向等间距设置在校直支架32上且多个下侧校直轮23与多个上侧校直轮22相互错开，多个上侧校直轮22和多个下侧校直轮23的每个校直轮上均设置有螺杆调节机构。螺杆调节机构包含校直轮滑块24、竖直螺杆25和螺杆旋钮26，校直支架21的后侧开有沿竖直方向的滑槽，校直轮滑块24滑动设置在滑槽内，竖直螺杆25的一端转动设置在校直轮滑块24上侧，竖直螺杆25另一端穿过校直支架21端面与校直支架21螺纹连接，螺杆旋钮26固定在竖直螺杆25另一端端部。通过上下两组校直轮22对丝材进行校直，并且通过螺杆调节机构随时调整每个校直轮的高度，从而保证最终的校直效果。
如图5和图6所示，电源2包含低压大电流变压器27和导电端子28，低压大电流变压器27的初级线圈的两端分别连接220V市电的零线和火线，低压大电流变压器27的次级线圈的两端分别连接一个导电端子28，导电端子28滑动设置在两组丝材1上。导电端子28包含钩状主体29，钩状主体29上端钩体的内径与丝材1的直径匹配，钩状主体29上端钩设在丝材1的外侧，钩状主体29下端通过粗铜带或者铜条与低压大电流变压器的次级线圈的两端连接。钩状主体29上端端部还设置有一个钩牙30，钩牙30的一端铰接在钩状主体29上端端部并且钩牙30与钩状主体29的铰轴上设置有扭簧。电源2与导电端子28之间回路上还设置有电流表31和电源指示灯32，可以通过电流表31实时监测电流强度，从而方便对电源功率进行控制，从而控制预热加热的温度，电源指示灯32则可以直观地看到电源知否构成回路， 若指示灯不亮，则说明丝材端部不接触或者端子与丝材接触不亮，需要及时进行调整。
本发明的一种电预热式等离子体雾化装置还包含两根刚玉套管33，两根刚玉套管33沿两组丝材的输送方向设置且刚玉套管33固定在雾化装置的壳体上。两根刚玉套管33之间的夹角α为30-90°，通过刚玉套管33将丝材1固定住，使丝材1不发生经线的位移和弯曲。刚玉套管33由炉外伸到炉内，炉外长约1m，中间用法兰密封固定在雾化装置壳体的炉盖上，并保证两根丝材1的相交的触点位于等离子体射流发生器喷口的正下方50mm以内。
以上所述，仅是本发明的较佳实施例而已，并非对本发明作任何形式上的限制，虽然本发明已以较佳实施例揭露如上，然而并非用以限定本发明，任何熟悉本专业的技术人员，在不脱离本发明技术方案范围内，当可利用上述揭示的技术内容做出些许更动或修饰为等同变化的等效实施例，但凡是未脱离本发明技术方案内容，依据本发明的技术实质，在本发明的精神和原则之内，对以上实施例所作的任何简单的修改、等同替换与改进等，均仍属于本发明技术方案的保护范围之内。

Claims (10)

  1. 一种电预热式等离子体雾化装置，其特征在于：包含至少两组丝材、一个电源和至少一个等离子体射流发生器，两组丝材的一端相交于等离子体射流发生器的喷口处，每组丝材分别通过送丝机构向等离子体射流发生器的喷口处不间断送料，一个电源的两极分别与两组丝材滑触连接。
  2. 根据权利要求1所述的一种电预热式等离子体雾化装置，其特征在于：所述送丝机构包含丝材放卷装置和送丝装置，丝材放卷装置包含丝材盘、放卷支架、放卷转轴，放卷转轴的一端转动设置在放卷支架上，丝材盘中心通孔套设在放卷转轴上且放卷转轴的另一端端部设置有外螺纹，螺母套设在放卷转轴的另一端与放卷转轴螺纹连接将丝材盘锁紧固定。
  3. 根据权利要求2所述的一种电预热式等离子体雾化装置，其特征在于：所述送丝装置包含送丝底座、升降压块、第一送丝轮、第二送丝轮、送丝电机、第一压轮、第二压轮、第一滑竿、第二滑竿、第一弹簧和第二弹簧，送丝底座的上端开有沿竖直方向的滑槽，升降压块滑动设置在送丝底座的滑槽内，第一送丝轮和第二送丝轮并列设置在送丝底座上并且第一送丝轮和第二送丝轮均通过皮带与固定在送丝底座下侧的送丝电机连接，第一压轮和第二压轮转动设置在升降压块上且第一压轮位于第一送丝轮上侧，第二压轮位于第二送丝轮上侧，第一滑竿和第二滑竿的下端固定在升降压块上侧且第一滑竿和第二滑竿的上端穿过送丝底座上端与送丝底座滑动设置，第一弹簧套设在第一滑竿上，第二弹簧套设在第二滑竿上。
  4. 根据权利要求3所述的一种电预热式等离子体雾化装置，其特征在于：所述送丝机构还包含丝材校直机构，丝材校直机构包含校直支架、多个上侧校直轮、多个下侧校直轮，多个上侧校直轮沿水平方向等间距设置在校直支架上，多个下侧校直轮沿水平方向等间距设置在校直支架上且多个下侧校直轮与多个上侧校直轮相互错开，多个上侧校直轮和多个下侧校直轮的每个校直轮上均设置有螺杆调节机构。
  5. 根据权利要求4所述的一种电预热式等离子体雾化装置，其特征在于：所述螺杆调节机构包含校直轮滑块、竖直螺杆和螺杆旋钮，校直支架的后侧开有沿竖直方向的滑槽，校直轮滑块滑动设置在滑槽内，竖直螺杆的一端转动设置在校直轮滑块上侧，竖直螺杆另一端穿过校直支架端面与校直支架螺纹连接，螺杆旋钮固定在竖直螺杆另一端端部。
  6. 根据权利要求1所述的一种电预热式等离子体雾化装置，其特征在于：所述电源包含低压大电流变压器和导电端子，低压大电流变压器的初级线圈的两端分别连接220V市电的零线和火线，低压大电流变压器的次级线圈的两端分别连接一个导电端子，导电端子滑动设置在两组丝材上。
  7. 根据权利要求6所述的一种电预热式等离子体雾化装置，其特征在于：所述导电端子包含钩状主体，钩状主体上端钩体的内径与丝材的直径匹配，钩状主体上端钩设在丝材的外侧， 钩状主体下端通过粗铜带或者铜条与低压大电流变压器的次级线圈的两端连接。
  8. 根据权利要求7所述的一种电预热式等离子体雾化装置，其特征在于：所述钩状主体上端端部还设置有一个钩牙，钩牙的一端铰接在钩状主体上端端部并且钩牙与钩状主体的铰轴上设置有扭簧。
  9. 根据权利要求6所述的一种电预热式等离子体雾化装置，其特征在于：所述电源与导电端子之间回路上还设置有电流表和电源指示灯。
  10. 根据权利要求1所述的一种电预热式等离子体雾化装置，其特征在于：还包含两根刚玉套管，两根刚玉套管沿两组丝材的输送方向设置且刚玉套管固定在雾化装置的壳体上。
PCT/CN2022/072432 2021-12-22 2022-01-18 一种电预热式等离子体雾化装置 WO2023115673A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202111575510.8A CN114226741B (zh) 2021-12-22 2021-12-22 一种电预热式等离子体雾化装置
CN202111575510.8 2021-12-22

Publications (1)

Publication Number Publication Date
WO2023115673A1 true WO2023115673A1 (zh) 2023-06-29

Family

ID=80760811

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2022/072432 WO2023115673A1 (zh) 2021-12-22 2022-01-18 一种电预热式等离子体雾化装置

Country Status (2)

Country Link
CN (1) CN114226741B (zh)
WO (1) WO2023115673A1 (zh)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5707419A (en) * 1995-08-15 1998-01-13 Pegasus Refractory Materials, Inc. Method of production of metal and ceramic powders by plasma atomization
CN107096925A (zh) * 2017-05-10 2017-08-29 江苏天楹环保能源成套设备有限公司 一种新型的等离子体雾化制备球型粉末系统
CN107175337A (zh) * 2017-05-22 2017-09-19 加拿大艾浦莱斯有限公司 一种基于等离子体雾化技术的金属粉末制备方法及其装置
CN108025365A (zh) * 2015-07-17 2018-05-11 Ap&C高端粉末涂料公司 等离子体雾化金属粉末制造工艺及其系统
CN110919017A (zh) * 2019-12-20 2020-03-27 北京工业大学 一种热丝辅助等离子弧制备球形金属粉末的方法及装置
CN113290249A (zh) * 2021-04-19 2021-08-24 北京工业大学 一种电弧辅助的等离子雾化制备球形金属粉末的方法及设备
CN113414398A (zh) * 2021-06-21 2021-09-21 江苏天楹等离子体科技有限公司 一种等离子体制备金属粉末的设备及其方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011054113A1 (en) * 2009-11-05 2011-05-12 Ap&C Advanced Powders & Coatings Inc. Methods and apparatuses for preparing spheroidal powders
RU2751609C1 (ru) * 2020-05-06 2021-07-15 Общество С Ограниченной Ответственностью "Новые Дисперсные Материалы" Способ и устройство для получения порошков для аддитивных технологий

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5707419A (en) * 1995-08-15 1998-01-13 Pegasus Refractory Materials, Inc. Method of production of metal and ceramic powders by plasma atomization
CN108025365A (zh) * 2015-07-17 2018-05-11 Ap&C高端粉末涂料公司 等离子体雾化金属粉末制造工艺及其系统
CN107096925A (zh) * 2017-05-10 2017-08-29 江苏天楹环保能源成套设备有限公司 一种新型的等离子体雾化制备球型粉末系统
CN107175337A (zh) * 2017-05-22 2017-09-19 加拿大艾浦莱斯有限公司 一种基于等离子体雾化技术的金属粉末制备方法及其装置
CN110919017A (zh) * 2019-12-20 2020-03-27 北京工业大学 一种热丝辅助等离子弧制备球形金属粉末的方法及装置
CN113290249A (zh) * 2021-04-19 2021-08-24 北京工业大学 一种电弧辅助的等离子雾化制备球形金属粉末的方法及设备
CN113414398A (zh) * 2021-06-21 2021-09-21 江苏天楹等离子体科技有限公司 一种等离子体制备金属粉末的设备及其方法

Also Published As

Publication number Publication date
CN114226741A (zh) 2022-03-25
CN114226741B (zh) 2024-06-25

Similar Documents

Publication Publication Date Title
CN101391306A (zh) 一种制备球形钛微粉或超微粉的装置和方法
CA3054191A1 (en) Plasma atomization metal powder manufacturing processes and systems therefor
CN106001528B (zh) 用多石墨中空棒做电极的连铸中间包直流等离子加热装置
CN102615289A (zh) 蒸发-冷凝制备超细金属粉末的方法
CN113145855B (zh) 一种电弧制备高熔点合金粉末的装置和方法
CN108031855A (zh) 一种感应加热与射频等离子联合雾化制粉系统
TW201600471A (zh) 用於使用雙源氣旋電漿反應器來進行材料處理的方法與裝置
CN110091035A (zh) 一种高熵合金增材制造装置及增材制造方法
Ye et al. Research on arc interference and welding operating point change of twin wire MIG welding
WO2023115673A1 (zh) 一种电预热式等离子体雾化装置
CN101250683A (zh) 一种用电弧喷涂制备异种金属涂层的方法
WO2019091084A1 (zh) 双电极直流电熔镁炉操作电阻计算方法
CN102126746A (zh) 以高频等离子体为热源制备纳米二氧化锡的方法及装置
CN215392473U (zh) 一种射频等离子旋转雾化制粉设备
CN209303718U (zh) Icp等离子制粉设备
CN107309433A (zh) 一种亚微米及纳米金属粉体的生产设备
CN105345019B (zh) 3d打印用金属粉末高效电弧放电制备装置
CN113145853B (zh) 一种球状金属粉的气雾化制备装置及方法
CN103042222B (zh) 一种基于静电喷射的细晶粉末制备装置及其使用方法
CN110871274B (zh) 一种钛合金粉末加工设备及制备工艺
CN211588527U (zh) 一种真空无坩埚熔炼等离子体制备高纯纳米材料的装置
CN1020953C (zh) 控弧式磁镜直流电弧炉
CN111069617A (zh) 一种制备3d打印用金属粉末的离心雾化机
CN115740471A (zh) 一种超声辅助等离子-电弧复合雾化制粉设备与制粉方法
CN203044900U (zh) 一种非晶/纳米晶金属粉末的制备装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22909019

Country of ref document: EP

Kind code of ref document: A1