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WO2014198009A1 - Electrospark deposition welding method - Google Patents

Electrospark deposition welding method Download PDF

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Publication number
WO2014198009A1
WO2014198009A1 PCT/CN2013/000929 CN2013000929W WO2014198009A1 WO 2014198009 A1 WO2014198009 A1 WO 2014198009A1 CN 2013000929 W CN2013000929 W CN 2013000929W WO 2014198009 A1 WO2014198009 A1 WO 2014198009A1
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WO
WIPO (PCT)
Prior art keywords
repair material
metal repair
workpiece
ultrasonic transducer
ultrasonic
Prior art date
Application number
PCT/CN2013/000929
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French (fr)
Chinese (zh)
Inventor
宣浩
Original Assignee
余姚市益精电子有限公司
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Publication date
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Publication of WO2014198009A1 publication Critical patent/WO2014198009A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/10—Other electric circuits therefor; Protective circuits; Remote controls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/04—Welding for other purposes than joining, e.g. built-up welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/09—Arrangements or circuits for arc welding with pulsed current or voltage

Definitions

  • the invention relates to an electric spark surfacing method. Background technique
  • the electric spark surfacing machine is one of the main tools to realize the surfacing welding.
  • the working principle of the electric spark surfacing machine is to use the metal repairing material connected to the positive electrode and the metal workpiece connected to the negative electrode to generate the electric spark discharge, and the metal repairing material is transferred to the metal workpiece.
  • a buildup layer is formed on the surface to complete the repair of the workpiece defect.
  • the working principle diagram of spark discharge generated by the electric spark surfacing machine sold in the market uses a rotating welding material to contact the workpiece, and a friction gap is generated between the welding material and the workpiece, thereby completing the pulse discharge reactor.
  • the method of the electric spark surfacing has the following disadvantages: First, the rotating system is composed of many components such as a motor, a bearing, a reducer, etc., in particular, the electrical connection between the pulse power source and the welding material is through a sliding friction connection of the sliding connector, and the connection is made.
  • the part is easy to wear; secondly, due to the large number of system components, large volume, complicated structure, high failure rate; in addition, the welding material is operated by rotation, and the requirements for the length and concentricity of the material are high, and the bending part cannot be performed. Or welding in a space that is not linear. Summary of the invention
  • the technical problem to be solved by the present invention is to provide an electric spark surfacing method which is simple in structure and more convenient and flexible in operation in view of the above state of the art.
  • an electric spark surfacing method which comprises the following steps:
  • the ultrasonic transducer is connected with an ultrasonic driving circuit, and the ultrasonic transducer drives the metal repairing material to linearly reciprocate with respect to the workpiece under the driving of the ultrasonic driving circuit, and maintains an output signal of the ultrasonic driving circuit.
  • the frequency is the same as the vibration frequency of the ultrasonic transducer;
  • the metal repairing material reciprocates to generate a discharge gap, so that the metal repairing material with the positive pulse is mainly discharged through the discharge gap to the workpiece with the negative pulse, and a large discharge current is generated, and a part of the welding is performed.
  • the material is transferred to the workpiece to form a weld overlay.
  • the ultrasonic transducer comprises a rear seat and a piezoelectric ceramic disposed in the rear seat, a bottom of the rear seat is connected with a vibrator, and a bottom of the vibrator is provided with a horn, the metal repairing The material is mounted on the horn.
  • the horn can appropriately function to amplify the vibration amplitude to obtain the required vibration gap and improve the vibration efficiency.
  • the metal repair material is inserted into the horn, and the metal repair material and the horn are clamped by laterally disposed screws.
  • the invention has the advantages that: the reciprocating vibration is realized by the ultrasonic transducer, the transducer is small in size, simple in structure and convenient in operation, and the discharge gap is generated by the ultrasonic reciprocating vibration, thereby generating a discharge current to realize surfacing welding.
  • the pulse power supply is connected to the metal repair material (welding material) by means of screw clamping through the transducer, and the contact is more reliable; in addition, since the metal repairing material (splicing material) has no rotational motion, there is no eccentricity problem, and the metal repairing material ( Welding materials) There is no length and straightness requirement, and even metal repair materials (welding materials) can be bent to facilitate bending or irregular welding.
  • FIG. 1 is a block diagram showing the working principle of a surfacing machine for implementing the electric spark surfacing method of the embodiment of the present invention.
  • FIG. 2 is a schematic structural view of an ultrasonic transducer according to an embodiment of the present invention.
  • FIG. 3 is a working principle of a prior art welding method for electric spark surfacing. detailed description
  • the electric spark surfacing machine of the present embodiment adopts an ultrasonic vibration method to realize a discharge gap, and completes a surfacing process of pulse discharge.
  • the electric spark surfacing machine comprises a pulse power source 1, a workpiece 2, a metal repairing material 3 (welding material), an ultrasonic transducer 4, a horn 5 and an ultrasonic driving circuit 6, wherein the electric spark stacker realizes an electric spark
  • the surfacing method includes the following steps:
  • a pulse power supply is provided between the workpiece 2 and the metal repairing material 3.
  • the negative pole of the pulse power source 1 is directly connected to the workpiece 2, and the positive pole of the pulse power source 1 is connected to the metal repairing material 3 via an ultrasonic transducer 4;
  • the ultrasonic transducer 4 is connected to the ultrasonic drive circuit 6, and the ultrasonic transducer 4 drives the metal repair material 3 to reciprocate linearly with respect to the workpiece 2 under the driving of the ultrasonic drive circuit 6, and maintains the ultrasonic drive circuit.
  • the output signal frequency of 6 is the same as the vibration frequency of the ultrasonic transducer 4;
  • the metal repair material reciprocates to generate a discharge gap, so that the metal repair material with the positive pulse is mainly discharged through the discharge gap to the workpiece 2, which is mainly composed of the negative pulse, to generate a large discharge current, and a part of the welding material is to be The material is transferred to the workpiece 2 to form a weld overlay.
  • FIG. 2 it is a schematic structural view of the ultrasonic transducer 4 in the above step.
  • the ultrasonic transducer 4 has a housing (not shown) outside, and a rear seat 41 is disposed in the housing and is mounted on the rear seat 41.
  • the piezoelectric ceramic 42 is connected to the bottom of the rear seat 41 with a titanium alloy vibrator 43.
  • the bottom of the vibrator 43 is provided with a horn 5, which is generally made of steel material and exposed outside the casing, metal
  • the repairing material 3 is mounted on the horn 5; the metal repairing material 3 is inserted into the horn 5, and the metal repairing material 3 and the horn 5 are clamped by the laterally disposed screws 44;
  • the base 41 is also provided with a connecting wire 61 of an ultrasonic drive circuit, which is provided on the rear seat 41 by a fastening screw 45.
  • the ultrasonic transducer 4 of the present embodiment converts electrical energy into mechanical vibration by the piezoelectric ceramic 42 after the ultrasonic driving circuit 6 is turned on, and the energy is amplified by the vibrator 43 and transmitted to the metal repairing material 3 via the horn 5 . Reciprocating vibration of the metal repair material 3 (welding material) is achieved.
  • the transducer of the embodiment has a small volume and a simple structure, and the metal repairing material 3 (welding material) has no rotational motion, and there is no eccentricity problem, and the metal repairing material 3 (Welding material) There is no length and straightness requirement, which is more conducive to the welding repair of different shapes of workpiece 2 and different parts inside and outside the workpiece 2.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)

Abstract

An electrospark deposition welding method, comprising the following steps: disposing a pulsed power supply (1) between a workpiece (2) and metal repair material (3), the cathode of the pulsed power supply (1) being directly connected to the workpiece (2) and the anode of the pulsed power supply (1) being connected to the metal repair material (3) via an ultrasonic transducer (4); the ultrasonic transducer (4) is driven by an ultrasonic drive circuit (6) to drive the metal repair material (3) to vibrate reciprocatingly and linearly relative to the workpiece (2), keeping the output signal frequency of the ultrasonic drive circuit (6) the same as the vibration frequency of the ultrasonic transducer (4); the reciprocating vibration of the metal repair material (3) causes discharge to the workpiece (2) to form a deposition welding layer. The transducer used for electrospark deposition welding has a small size and a simple structure and is easy to operate; the pulsed power supply is connected to the metal repair material via the transducer using a screw clamp ensuring more reliable contact; no length or straightness requirement is imposed on the metal repair material as an eccentricity problem will not occur due to the absence of rotational movement of the metal repair material, therefore, the metal repair material can even be bent to facilitate welding of irregular parts.

Description

一种电火花堆悍方法  Electric spark stacking method
技术领域 Technical field
本发明涉及一种电火花堆焊方法。 背景技术  The invention relates to an electric spark surfacing method. Background technique
堆焊作为材料表面改性的一种经济而快速的工艺方法，越来越广泛地应用于各个工 业部门零件的制造修复中。 电火花堆焊机就是实现堆焊的主要工具之一， 电火花堆焊机 的工作原理是利用接正极的金属修补材料与接负极的金属工件产生电火花放电， 金属修 补材料会转移至金属工件上形成堆积层， 从而完成工件缺损修复。 虽然采用电火花堆焊 的堆积层强度没有常规的电焊和氩悍高， 但由于堆积层几乎没有焊接应力， 在不允许有 应力的场合有它的特殊效果。  As an economical and rapid process for surface modification of materials, surfacing is increasingly used in the manufacture and repair of parts in various industrial sectors. The electric spark surfacing machine is one of the main tools to realize the surfacing welding. The working principle of the electric spark surfacing machine is to use the metal repairing material connected to the positive electrode and the metal workpiece connected to the negative electrode to generate the electric spark discharge, and the metal repairing material is transferred to the metal workpiece. A buildup layer is formed on the surface to complete the repair of the workpiece defect. Although the strength of the deposited layer using EDM is not as high as that of conventional electric welding and argon, there is almost no welding stress in the deposited layer, and its special effect is not allowed in the case where stress is not allowed.
目前， 市场上销售的电火花堆焊机产生火花放电的工作原理图， 参见图 3所示， 该 方法利用旋转的焊接材料接触工件， 焊接材料和工件之间产生摩擦间隙， 进而完成脉冲 放电堆焊过程。 这种电火花堆焊的方法存在如下缺点： 首先， 旋转系统由电机、 轴承、 减速器等较多部件组成，特别是脉冲电源与焊接材料的电气连接是通过滑动连接器的滑 动摩擦连接， 连接部位很容易磨损； 其次， 由于系统部件多， 体积大、 结构复杂， 故障 率高； 另外， 焊接材料是采用旋转方式工作， 对材料的长度、 同心度的要求都很高， 不 能进行折弯部位或呈非直线形状内空间的焊接。 发明内容  At present, the working principle diagram of spark discharge generated by the electric spark surfacing machine sold in the market, as shown in FIG. 3, the method uses a rotating welding material to contact the workpiece, and a friction gap is generated between the welding material and the workpiece, thereby completing the pulse discharge reactor. Welding process. The method of the electric spark surfacing has the following disadvantages: First, the rotating system is composed of many components such as a motor, a bearing, a reducer, etc., in particular, the electrical connection between the pulse power source and the welding material is through a sliding friction connection of the sliding connector, and the connection is made. The part is easy to wear; secondly, due to the large number of system components, large volume, complicated structure, high failure rate; in addition, the welding material is operated by rotation, and the requirements for the length and concentricity of the material are high, and the bending part cannot be performed. Or welding in a space that is not linear. Summary of the invention
本发明所要解决的技术问题是针对上述现有技术现状而提供一种结构简单且操作 更加方便灵活的电火花堆焊方法。  The technical problem to be solved by the present invention is to provide an electric spark surfacing method which is simple in structure and more convenient and flexible in operation in view of the above state of the art.
本发明解决上述技术问题所采用的技术方案为：一种电火花堆焊方法，其特征在于 包括有如下步骤：  The technical solution adopted by the present invention to solve the above technical problems is: an electric spark surfacing method, which comprises the following steps:
(1)、 在工件和金属修补材料之间设置脉冲电源， 所述脉冲电源的负极直接连接工 件， 该脉冲电源的正极经过一超声波换能器连接金属修补材料；  (1) providing a pulse power source between the workpiece and the metal repairing material, wherein the negative electrode of the pulse power source is directly connected to the workpiece, and the positive electrode of the pulse power source is connected to the metal repairing material through an ultrasonic transducer;
(2) 所述超声波换能器连接有超声波驱动电路， 该超声波换能器在超声波驱动电 路的驱动下带动金属修补材料相对于工件做直线往复振动， 并且， 保持所述超声波驱动 电路的输出信号频率和所述超声波换能器的振动频率相同；  (2) the ultrasonic transducer is connected with an ultrasonic driving circuit, and the ultrasonic transducer drives the metal repairing material to linearly reciprocate with respect to the workpiece under the driving of the ultrasonic driving circuit, and maintains an output signal of the ultrasonic driving circuit. The frequency is the same as the vibration frequency of the ultrasonic transducer;
(3)、 所述金属修补材料往复振动产生放电间隙， 使得带正极脉冲为主的金属修补 材料通过该放电间隙对负极脉冲为主的工件放电， 产生较大的放电电流， 将一部分焊接 材料转移到工件上， 形成堆焊层。 (3) The metal repairing material reciprocates to generate a discharge gap, so that the metal repairing material with the positive pulse is mainly discharged through the discharge gap to the workpiece with the negative pulse, and a large discharge current is generated, and a part of the welding is performed. The material is transferred to the workpiece to form a weld overlay.
作为优选，所述的超声波换能器包括有后座和设置于该后座内的压电陶瓷，所述后 座的底部连接有振子， 该振子的底部设置有变幅杆， 所述金属修补材料安装于所述变幅 杆上。 变幅杆可以适当地起到放大振动幅度的作用， 获得所需要的振动间隙， 提高振动 效率。  Preferably, the ultrasonic transducer comprises a rear seat and a piezoelectric ceramic disposed in the rear seat, a bottom of the rear seat is connected with a vibrator, and a bottom of the vibrator is provided with a horn, the metal repairing The material is mounted on the horn. The horn can appropriately function to amplify the vibration amplitude to obtain the required vibration gap and improve the vibration efficiency.
为了提高焊接材料的连接可靠性，所述金属修补材料插设于所述变幅杆之内，该金 属修补材料和变幅杆之间通过侧向设置的螺丝夹紧。  In order to improve the connection reliability of the solder material, the metal repair material is inserted into the horn, and the metal repair material and the horn are clamped by laterally disposed screws.
与现有技术相比， 本发明的优点在于： 通过超声波换能器实现往复振动， 换能器体 积小、 结构简单且操作方便， 利用超声波往复振动产生放电间隙， 进而产生放电电流， 实现堆焊； 脉冲电源通过换能器采用螺丝夹紧的方式连接金属修补材料 （焊接材料）， 接触更加可靠； 另外， 由于金属修补材料 （悍接材料） 没有旋转运动不存在偏心问题， 对金属修补材料 （焊接材料）没有长度和直度要求， 甚至可以将金属修补材料 （焊接材 料） 折弯， 方便进行弯曲或非规则部位的焊接。 附图说明  Compared with the prior art, the invention has the advantages that: the reciprocating vibration is realized by the ultrasonic transducer, the transducer is small in size, simple in structure and convenient in operation, and the discharge gap is generated by the ultrasonic reciprocating vibration, thereby generating a discharge current to realize surfacing welding. The pulse power supply is connected to the metal repair material (welding material) by means of screw clamping through the transducer, and the contact is more reliable; in addition, since the metal repairing material (splicing material) has no rotational motion, there is no eccentricity problem, and the metal repairing material ( Welding materials) There is no length and straightness requirement, and even metal repair materials (welding materials) can be bent to facilitate bending or irregular welding. DRAWINGS
图 1为实现本发明实施例的电火花堆焊方法的堆焊机工作原理框图。  1 is a block diagram showing the working principle of a surfacing machine for implementing the electric spark surfacing method of the embodiment of the present invention.
图 2为本发明实施例的超声波换能器的结构示意图。  2 is a schematic structural view of an ultrasonic transducer according to an embodiment of the present invention.
图 3为现有技术的电火花堆焊的堆焊方法工作原理。 具体实施方式  FIG. 3 is a working principle of a prior art welding method for electric spark surfacing. detailed description
以下结合附图实施例对本发明作进一步详细描述。  The invention will be further described in detail below with reference to the embodiments of the drawings.
如图 1、 图 2所示， 本实施例的电火花堆焊机采用超声波振动方法实现放电间隙， 完成脉冲放电的堆焊过程。  As shown in FIG. 1 and FIG. 2, the electric spark surfacing machine of the present embodiment adopts an ultrasonic vibration method to realize a discharge gap, and completes a surfacing process of pulse discharge.
该电火花堆焊机包括有脉冲电源 1、 工件 2、 金属修补材料 3 (焊接材料）、 超声波 换能器 4、 变幅杆 5和超声波驱动电路 6， 其中， 电火花堆悍机实现电火花堆焊方法包 括有如下步骤：  The electric spark surfacing machine comprises a pulse power source 1, a workpiece 2, a metal repairing material 3 (welding material), an ultrasonic transducer 4, a horn 5 and an ultrasonic driving circuit 6, wherein the electric spark stacker realizes an electric spark The surfacing method includes the following steps:
(1)、在工件 2和金属修补材料 3之间设置脉冲电源 1， 脉冲电源 1的负极直接连接 工件 2， 该脉冲电源 1的正极经过一超声波换能器 4连接金属修补材料 3 ;  (1) A pulse power supply is provided between the workpiece 2 and the metal repairing material 3. The negative pole of the pulse power source 1 is directly connected to the workpiece 2, and the positive pole of the pulse power source 1 is connected to the metal repairing material 3 via an ultrasonic transducer 4;
(2)、超声波换能器 4连接有超声波驱动电路 6， 该超声波换能器 4在超声波驱动电 路 6的驱动下带动金属修补材料 3相对于工件 2做直线往复振动， 并且， 保持超声波驱 动电路 6的输出信号频率和超声波换能器 4的振动频率相同；  (2) The ultrasonic transducer 4 is connected to the ultrasonic drive circuit 6, and the ultrasonic transducer 4 drives the metal repair material 3 to reciprocate linearly with respect to the workpiece 2 under the driving of the ultrasonic drive circuit 6, and maintains the ultrasonic drive circuit. The output signal frequency of 6 is the same as the vibration frequency of the ultrasonic transducer 4;
(3)、金属修补材料往复振动产生放电间隙， 使得带正极脉冲为主的金属修补材料 3 通过该放电间隙对负极脉冲为主的工件 2放电， 产生较大的放电电流， 将一部分焊接材 料转移到工件 2上， 形成堆焊层。 (3) The metal repair material reciprocates to generate a discharge gap, so that the metal repair material with the positive pulse is mainly discharged through the discharge gap to the workpiece 2, which is mainly composed of the negative pulse, to generate a large discharge current, and a part of the welding material is to be The material is transferred to the workpiece 2 to form a weld overlay.
如图 2所示， 为上述步骤中的超声波换能器 4结构示意图， 该超声波换能器 4外部 具有壳体 （图中未示）， 壳体内设置有后座 41和安装于该后座 41内的压电陶瓷 42， 后 座 41的底部连接有钛合金振子 43， 该振子 43的底部设置有变幅杆 5， 变幅杆 5—般由 钢铁材料制作并外露于壳体之外， 金属修补材料 3安装于变幅杆 5上； 金属修补材料 3 插设于变幅杆 5之内， 该金属修补材料 3和变幅杆 5之间通过侧向设置的螺丝 44夹紧； 此外， 后座 41上还设置有超声波驱动电路的连接线 61， 该连接线 61通过紧固螺钉 45 设置于后座 41上。  As shown in FIG. 2, it is a schematic structural view of the ultrasonic transducer 4 in the above step. The ultrasonic transducer 4 has a housing (not shown) outside, and a rear seat 41 is disposed in the housing and is mounted on the rear seat 41. The piezoelectric ceramic 42 is connected to the bottom of the rear seat 41 with a titanium alloy vibrator 43. The bottom of the vibrator 43 is provided with a horn 5, which is generally made of steel material and exposed outside the casing, metal The repairing material 3 is mounted on the horn 5; the metal repairing material 3 is inserted into the horn 5, and the metal repairing material 3 and the horn 5 are clamped by the laterally disposed screws 44; The base 41 is also provided with a connecting wire 61 of an ultrasonic drive circuit, which is provided on the rear seat 41 by a fastening screw 45.
本实施例的超声波换能器 4在超声波驱动电路 6导通后， 通过压电陶瓷 42将电能 转换为机械振动， 经过振子 43进行能量的放大， 在经变幅杆 5传递到金属修补材料 3， 实现金属修补材料 3的 （焊接材料） 的往复振动。 相比于传统的采用机械式旋转结构进 行焊接的方法， 本实施例的换能器体积小、 结构简单， 金属修补材料 3 (焊接材料） 没 有旋转运动， 不存在偏心问题， 对金属修补材料 3 (焊接材料） 没有长度和直度要求， 更利于实现对各种形状的工件 2和工件 2内外不同部位的焊接修复。  The ultrasonic transducer 4 of the present embodiment converts electrical energy into mechanical vibration by the piezoelectric ceramic 42 after the ultrasonic driving circuit 6 is turned on, and the energy is amplified by the vibrator 43 and transmitted to the metal repairing material 3 via the horn 5 . Reciprocating vibration of the metal repair material 3 (welding material) is achieved. Compared with the conventional method of welding using a mechanical rotating structure, the transducer of the embodiment has a small volume and a simple structure, and the metal repairing material 3 (welding material) has no rotational motion, and there is no eccentricity problem, and the metal repairing material 3 (Welding material) There is no length and straightness requirement, which is more conducive to the welding repair of different shapes of workpiece 2 and different parts inside and outside the workpiece 2.

Claims

权 利 要 求 Rights request
1、 一种电火花堆悍方法， 其特征在于包括有如下步骤： 1. An electric spark stacking method, which is characterized by including the following steps:
(1)、 在工件和金属修补材料之间设置脉冲电源， 所述脉冲电源的负极直接连接工 件， 该脉冲电源的正极经过一超声波换能器连接金属修补材料； (1) A pulse power supply is set between the workpiece and the metal repair material, the negative electrode of the pulse power supply is directly connected to the workpiece, and the positive electrode of the pulse power supply is connected to the metal repair material through an ultrasonic transducer;
(2)、 所述超声波换能器连接有超声波驱动电路， 该超声波换能器在超声波驱动电 路的驱动下带动金属修补材料相对于工件做直线往复振动， 并且， 保持所述超声波驱动 电路的输出信号频率和所述超声波换能器的振动频率相同； (2) The ultrasonic transducer is connected to an ultrasonic drive circuit. Driven by the ultrasonic drive circuit, the ultrasonic transducer drives the metal repair material to vibrate in a straight line relative to the workpiece, and maintains the output of the ultrasonic drive circuit. The signal frequency is the same as the vibration frequency of the ultrasonic transducer;
(3)、 所述金属修补材料的往复振动产生放电间隙， 使得带正极脉冲为主的金属修 补材料通过该放电间隙对负极脉冲为主的工件放电， 产生较大的放电电流， 将一部分焊 接材料转移到工件上， 形成堆焊层。 (3) The reciprocating vibration of the metal repair material generates a discharge gap, so that the metal repair material with mainly positive electrode pulses discharges the workpiece with mainly negative electrode pulses through the discharge gap, generating a large discharge current, and a part of the welding material Transferred to the workpiece to form a cladding layer.
2、 根据权利要求 1所述的电火花堆焊方法， 其特征在于： 所述的超声波换能器包 括有后座和设置于该后座内的压电陶瓷， 所述后座的底部连接有振子， 该振子的底部设 置有变幅杆， 所述金属修补材料安装于所述变幅杆上。 2. The spark surfacing method according to claim 1, characterized in that: the ultrasonic transducer includes a back seat and a piezoelectric ceramic arranged in the back seat, and the bottom of the back seat is connected to A vibrator is provided with a horn at the bottom of the vibrator, and the metal repair material is installed on the horn.
3、 根据权利要求 2所述的电火花堆焊方法， 其特征在于： 所述金属修补材料插设 于所述变幅杆之内， 该金属修补材料和变幅杆之间通过侧向设置的螺丝夹紧。 3. The spark surfacing method according to claim 2, characterized in that: the metal repair material is inserted into the horn, and the metal repair material and the horn are laterally arranged between Screw clamping.
PCT/CN2013/000929 2013-06-09 2013-08-08 Electrospark deposition welding method WO2014198009A1 (en)

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