WO2020215633A1 - Bimetal wire arc additive manufacturing method based on mig/mag heat source - Google Patents

Bimetal wire arc additive manufacturing method based on mig/mag heat source Download PDF

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Publication number
WO2020215633A1
WO2020215633A1 PCT/CN2019/112726 CN2019112726W WO2020215633A1 WO 2020215633 A1 WO2020215633 A1 WO 2020215633A1 CN 2019112726 W CN2019112726 W CN 2019112726W WO 2020215633 A1 WO2020215633 A1 WO 2020215633A1
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Prior art keywords
cladding
additive
welding wire
welding
wire
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PCT/CN2019/112726
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French (fr)
Chinese (zh)
Inventor
程远
吴晓
袁玉荣
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南京英尼格玛工业自动化技术有限公司
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Publication of WO2020215633A1 publication Critical patent/WO2020215633A1/en

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    • 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
    • B23K9/16—Arc welding or cutting making use of shielding gas
    • 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
    • B23K9/23—Arc welding or cutting taking account of the properties of the materials to be welded
    • B23K9/232—Arc welding or cutting taking account of the properties of the materials to be welded of different metals
    • 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
    • B33Y10/00—Processes of additive manufacturing

Definitions

  • the invention relates to a bimetallic arc additive manufacturing method based on a MIG/MAG heat source, and belongs to the technical field of directional energy deposition system equipment.
  • additive Manufacturing commonly known as 3D printing, combines computer-aided design, material processing and molding technology, based on digital model files, and integrates special metal materials, non-metal materials and medical biological materials through software and numerical control systems. , According to the methods of extrusion, sintering, melting, light solidification, spraying, etc., layer by layer, to produce the manufacturing technology of physical objects.
  • Additive manufacturing technology is often used in mold manufacturing, industrial design and other fields to make models, and then gradually used in the direct manufacturing of some products. There are already parts printed using this technology.
  • the technology has applications in jewelry, footwear, industrial design, architecture, engineering and construction (AEC), automotive, aerospace, dental and medical industries, education, geographic information systems, civil engineering, guns, and other fields.
  • AEC engineering and construction
  • Arc Additive Manufacturing Technology (Wire Arc Additive Manufacture, WAAM) is a method that uses the principle of layer-by-layer cladding, and uses arcs generated by welding machines such as MIG, TIG and PA as the heat source , Through the addition of wires, under the control of the software program, according to the three-dimensional digital model, the advanced digital manufacturing technology of metal parts is gradually formed from the line-surface-body.
  • the technical problem to be solved by the present invention is to provide a bimetallic arc additive manufacturing method based on MIG/MAG heat source.
  • the structure of the product that can be printed by this method has higher strength, hardness, crack arrest ability and high impact resistance. Performance, the printed product can be applied to some special products that require structure-function integration, such as the preparation of armored vehicles.
  • a bimetallic arc additive manufacturing method based on MIG/MAG heat source uses a twin-wire MIG/MAG welding machine as the heat source, and the welding wire A and the welding wire B in the bimetal welding wire are used as the deposited filler material. According to the additive manufacturing The slicing path generated by the software performs linear alternating weaving and cladding.
  • the above method is specifically: using additive manufacturing software to slice the product to be printed in layers.
  • the cladding method for odd-numbered slices is: each section of additive weld bead is stacked along the X-axis direction.
  • the welding wire A and the welding wire B are alternately cladding in the additive weld bead;
  • the cladding method for the even-numbered slices is: each additive weld bead is deposited along the Y axis direction, and the welding wire A and the welding wire B in each additive weld bead are alternately cladding.
  • the above method is specifically: using additive manufacturing software to slice the product to be printed in layers.
  • the cladding method for odd-numbered slices is: each section of additive weld bead is stacked along the X-axis direction.
  • the welding wire A and the welding wire B are alternately cladding in the additive weld bead, and the alternating ways of the A wire and the B welding wire in the adjacent additive weld bead are staggered; the welding method for the even-numbered layer slices is: each additive weld bead is deposited along the Y axis direction, The welding wire A and the welding wire B are alternately cladding in each segment of the additive welding pass, and the alternating patterns of the welding wire A and the welding wire B in the adjacent additive welding pass are staggered.
  • the selection of the metal wire material is determined by the original product or expected organizational performance requirements, such as strength, hardness, crack arrest ability, and impact resistance, that is, what kind of material the original product is made of or the expected organizational performance requirements .
  • the material of the metal wire selected in the 3D printing process is basically the same as that of the original product or meets the expected performance requirements.
  • the method of the present invention uses two different metal welding wires for linear alternating braiding and cladding, and the two metal alloys are added and combined to form a unique bimetal structure. Compared with the strength or hardness of a single metal, the bimetal product has higher strength or hardness.
  • the method of bimetallic arc additive manufacturing is continuous at the macro level, but is heterogeneous in-situ manufacturing at the micro level, subverting the concept of metallurgy, rolling preparation and quenching and tempering modification; through bimetal 3D printed armor protection products, the bimetallic interlaced structure makes the products have high tensile strength, the elongation rate is greatly increased, and the plastic deformation ability is also greatly improved, so that its organizational performance has higher strength, hardness, crack arrest ability and Bearing high impact resistance and other properties, the manufactured products (parts) can be applied to some special products that require structure-function integration, such as the preparation of armored vehicles.
  • Fig. 1 is the modeling of the workpiece to be printed by the additive manufacturing software in the printing method of the present invention, and slices it in layers according to the properties of the material itself;
  • Embodiment 1 is a schematic diagram of a printing method of odd-numbered layers in Embodiment 1 of the method of the present invention
  • Embodiment 3 is a schematic diagram of the printing method of even-numbered layers in Embodiment 1 of the method of the present invention.
  • Embodiment 4 is a schematic diagram of a printing method of odd layers in Embodiment 2 of the method of the present invention.
  • Fig. 5 is a working principle diagram of a twin-wire MIG/MAG welding machine in the method of the present invention.
  • Fig. 6 is a partial enlarged view of Fig. 5.
  • the method of the present invention uses a double-wire MIG/MAG welding machine as a heat source, and is driven by additive manufacturing software to control and drive two different wire metals in the double-wire welding machine to alternately cladding, thereby performing an arc additive manufacturing process.
  • each welding power source has its own independent control system and is equipped with an independently controlled wire feeder. There is a coordinated controller between the two welding power sources, which can obtain the perfect droplet transition coordination time between the two welding wires. There are continuously adjustable parameters on each welding power source. The power source characteristics can be adjusted according to the base material, filler metal and shielding gas, so as to obtain greater melting when surfacing welds with larger cross-sections or using greater welding speeds. Ratio.
  • the additive manufacturing software models the workpiece to be printed, and determines the height of each additive layer according to the material properties of the workpiece, and uses the arc additive manufacturing slicing software to slice the digital model of the part according to the determined layer height in the Z direction. , Obtain the two-dimensional contour map of the part model, use the offset algorithm or the parallel line scanning algorithm to generate the additive path corresponding to each point on each plane (each layer).
  • the present invention adopts a bimetallic arc additive manufacturing method.
  • the method uses a dual-wire MIG/MAG welding machine as a heat source, and the welding wire A and the welding wire B in the bimetallic welding wire are used as cladding filler materials ,
  • the slicing path generated by the additive manufacturing software to perform linear alternating weaving and cladding specifically: using the additive manufacturing software to slice the product to be printed in layers.
  • the cladding method for odd-numbered slices is: Sections of additive weld bead are cladding along the X-axis direction.
  • wire A and wire B are alternately cladding, and the alternate method of A wire and B wire in adjacent additive bead is staggered; the welding method for even-numbered layer slices is: every Segments of the additive weld bead are cladding along the Y-axis direction. In each segment of the additive weld bead, the welding wire A and the welding wire B are alternately cladding, and the alternating patterns of the welding wire A and the welding wire B in the adjacent additive weld bead are staggered.
  • the present invention adopts a bimetallic arc additive manufacturing method.
  • the method uses a dual-wire MIG/MAG welding machine as a heat source, and the welding wire A and the welding wire B in the bimetallic fuse are used as the deposited filler material.
  • the cladding method for odd-numbered slices is: each segment of additive The weld bead is cladding along the X axis, and the welding wire A and the wire B are alternately cladding in each segment of the additive weld;
  • the cladding method for even-numbered slices is: each segment of the additive bead is cladding along the Y axis, and each segment of the additive bead has the wire A and wire B are alternately cladding.
  • the present invention uses bimetallic wire welding as the heat source for arc additive manufacturing.
  • Two sets of independent power sources and wire feeders respectively control two different types of metal wires (wire A and wire B).
  • the difference between arc twin wire welding is double
  • the welding wire A and the welding wire B of the metal arc additive manufacturing are not cladding at the same time. Instead, the slicing path generated by the additive manufacturing software is linearly alternately braided and cladding.
  • the ratio of the two metals in the unit area or unit length of the bimetallic additive can be adjusted.
  • the bimetallic arc additive manufacturing is carried out in the method of Example 2 of the present invention.
  • the two selected bimetallic materials are stainless steel 316L welding wire (welding wire A) and nickel-based welding wire ER NiCrMo-3 welding wire (welding wire B); welding wire A
  • the welding current is 160A
  • the deposition speed is 10mm/S
  • the welding current of wire B is 170A
  • the deposition speed is 10mm/S.
  • the deposition time of the two metal wires can also be adjusted, during which the current can be adjusted according to the actual situation;
  • the waiting time is set between the layers, and the waiting time between each layer is 40S, which can be adjusted.
  • the printing volume is 110mm*85mm*57mm, and the printing time is 70min. After printing, it can be cooled to room temperature naturally.

Abstract

A bimetal wire arc additive manufacturing method based on a MIG/MAG heat source, for performing linear alternate weaving cladding with a twin-wire MIG/MAG welding machine as a heat source and with welding wire A and welding wire B in a bimetal welding wire as filling materials for cladding. The method comprises: performing slicing on a product to be printed using additive manufacturing software; and after slicing, performing additive processing for odd slices in a mode of performing cladding on each segment of additive welding pass along an x-axis direction, wherein in each segment of additive welding pass, a welding wire A and a welding wire B perform alternate cladding, and performing additive processing for even slices in a mode of performing accumulated cladding on each segment of additive welding pass along a Y-axis direction, wherein in each segment of additive welding pass, the welding wire A and the welding wire B perform alternate cladding. The method performs linear alternate weaving cladding using two different metal welding wires, such that a constitution structure of an obtained product has high strength, hardness, and crack-arrest capability, and has high impact resistance bearing performance.

Description

一种基于MIG/MAG热源的双金属电弧增材制造方法A bimetallic arc additive manufacturing method based on MIG/MAG heat source 技术领域Technical field
本发明涉及一种基于MIG/MAG热源的双金属电弧增材制造方法，属于定向能量沉积系统装备的技术领域。 The invention relates to a bimetallic arc additive manufacturing method based on a MIG/MAG heat source, and belongs to the technical field of directional energy deposition system equipment.
背景技术Background technique
增材制造（Additive Manufacturing，AM）俗称3D打印，融合了计算机辅助设计、材料加工与成型技术、以数字模型文件为基础，通过软件与数控系统将专用的金属材料、非金属材料以及医用生物材料，按照挤压、烧结、熔融、光固化、喷射等方式逐层堆积，制造出实体物品的制造技术。Additive Manufacturing (Additive Manufacturing, AM), commonly known as 3D printing, combines computer-aided design, material processing and molding technology, based on digital model files, and integrates special metal materials, non-metal materials and medical biological materials through software and numerical control systems. , According to the methods of extrusion, sintering, melting, light solidification, spraying, etc., layer by layer, to produce the manufacturing technology of physical objects.
增材制造技术常在模具制造、工业设计等领域被用于制造模型，后逐渐用于一些产品的直接制造，已经有使用这种技术打印而成的零部件。该技术在珠宝、鞋类、工业设计、建筑、工程和施工（AEC）、汽车，航空航天、牙科和医疗产业、教育、地理信息系统、土木工程、枪支以及其他领域都有所应用。Additive manufacturing technology is often used in mold manufacturing, industrial design and other fields to make models, and then gradually used in the direct manufacturing of some products. There are already parts printed using this technology. The technology has applications in jewelry, footwear, industrial design, architecture, engineering and construction (AEC), automotive, aerospace, dental and medical industries, education, geographic information systems, civil engineering, guns, and other fields.
电弧增材制造技术（Wire Arc Additive Manufacture，WAAM）是一种利用逐层熔覆原理，采用熔化极惰性气体保护焊接（MIG）、钨极惰性气体保护焊接（TIG）以及等离子体焊接电源（PA）等焊机产生的电弧为热源，通过丝材的添加，在软件程序的控制下，根据三维数字模型由线-面-体逐渐成形出金属零件的先进数字化制造技术。Arc Additive Manufacturing Technology (Wire Arc Additive Manufacture, WAAM) is a method that uses the principle of layer-by-layer cladding, and uses arcs generated by welding machines such as MIG, TIG and PA as the heat source , Through the addition of wires, under the control of the software program, according to the three-dimensional digital model, the advanced digital manufacturing technology of metal parts is gradually formed from the line-surface-body.
技术问题technical problem
本发明所要解决的技术问题是提供一种基于MIG/MAG热源的双金属电弧增材制造方法，该方法能够打印出的产品组织结构具有更高的强度、硬度、止裂能力以及高抗冲击承载性能，打印出的产品能够适用于如制备装甲车等一些需要结构—功能一体化构建的特殊制品。The technical problem to be solved by the present invention is to provide a bimetallic arc additive manufacturing method based on MIG/MAG heat source. The structure of the product that can be printed by this method has higher strength, hardness, crack arrest ability and high impact resistance. Performance, the printed product can be applied to some special products that require structure-function integration, such as the preparation of armored vehicles.
技术解决方案Technical solutions
为解决上述技术问题，本发明所采用的技术方案为：In order to solve the above technical problems, the technical solutions adopted by the present invention are:
一种基于MIG/MAG热源的双金属电弧增材制造方法，该方法采用双丝MIG/MAG焊机作为热源，双金属焊丝中的焊丝A和焊丝B作为熔敷的填充材料，根据增材制造软件生成的切片路径进行直线交替编织熔覆。A bimetallic arc additive manufacturing method based on MIG/MAG heat source. This method uses a twin-wire MIG/MAG welding machine as the heat source, and the welding wire A and the welding wire B in the bimetal welding wire are used as the deposited filler material. According to the additive manufacturing The slicing path generated by the software performs linear alternating weaving and cladding.
其中，上述方法具体为：利用增材制造软件对待打印的产品进行分层切片，分层切片后，对于奇数层切片的熔覆方式为：每段增材焊道沿X轴方向进行堆积熔覆，每段增材焊道中焊丝A和焊丝B交替熔覆；对于偶数层切片的熔覆方式为：每段增材焊道沿Y轴方向进行堆积熔覆，每段增材焊道中焊丝A和焊丝B交替熔覆。Among them, the above method is specifically: using additive manufacturing software to slice the product to be printed in layers. After layering and slicing, the cladding method for odd-numbered slices is: each section of additive weld bead is stacked along the X-axis direction. The welding wire A and the welding wire B are alternately cladding in the additive weld bead; the cladding method for the even-numbered slices is: each additive weld bead is deposited along the Y axis direction, and the welding wire A and the welding wire B in each additive weld bead are alternately cladding.
其中，上述方法具体为：利用增材制造软件对待打印的产品进行分层切片，分层切片后，对于奇数层切片的熔覆方式为：每段增材焊道沿X轴方向进行堆积熔覆，每段增材焊道中焊丝A和焊丝B交替熔覆，相邻增材焊道中A焊丝和B焊丝的交替方式错开；对于偶数层切片的焊接方式为：每段增材焊道沿Y轴方向进行堆积熔覆，每段增材焊道中焊丝A和焊丝B交替熔覆，相邻增材焊道中焊丝A和焊丝B的交替方式错开。Among them, the above method is specifically: using additive manufacturing software to slice the product to be printed in layers. After layering and slicing, the cladding method for odd-numbered slices is: each section of additive weld bead is stacked along the X-axis direction. The welding wire A and the welding wire B are alternately cladding in the additive weld bead, and the alternating ways of the A wire and the B welding wire in the adjacent additive weld bead are staggered; the welding method for the even-numbered layer slices is: each additive weld bead is deposited along the Y axis direction, The welding wire A and the welding wire B are alternately cladding in each segment of the additive welding pass, and the alternating patterns of the welding wire A and the welding wire B in the adjacent additive welding pass are staggered.
其中，每段增材焊道的单位长度为L，L=X%焊丝A+(1-X%)%焊丝B。Among them, the unit length of each segment of additive welding bead is L, L=X% welding wire A+(1-X%)% welding wire B.
本发明方法中，金属丝材的选择根据原产品决定或者预期的组织性能要求，如强度、硬度、止裂能力以及抗冲击性能，即原产品采用什么样的材质制成或者预期的组织性能要求，3D打印过程中选用的金属丝材的材质与原产品的材质成分基本相同或和符合预期的性能要求相同。In the method of the present invention, the selection of the metal wire material is determined by the original product or expected organizational performance requirements, such as strength, hardness, crack arrest ability, and impact resistance, that is, what kind of material the original product is made of or the expected organizational performance requirements , The material of the metal wire selected in the 3D printing process is basically the same as that of the original product or meets the expected performance requirements.
有益效果Beneficial effect
相比于现有技术，本发明技术方案具有的有益效果为：Compared with the prior art, the technical solution of the present invention has the following beneficial effects:
本发明方法为采用两种不同的金属焊丝进行直线交替编织熔覆，将两种金属合金相加合并形成独特的双金属结构，相比于单一种金属的强度或者硬度，双金属产品具备更高的强度；双金属电弧增材制造的方法，从宏观上是连续的，但是微观又是异构的整体式原位制造，颠覆了冶金、轧制制备与调质改性的理念；通过双金属3D打印出的装甲防护产品，双金属交织结构使产品具有高的抗拉强度，延伸率大幅增长，塑性变形能力也大幅提高，从而其组织性能具有更高的强度、硬度、止裂能力以及具备承载高抗冲击等性能，制得的产品（零件）能够适用于如制备装甲车等一些需要结构—功能一体化构建的特殊制品。The method of the present invention uses two different metal welding wires for linear alternating braiding and cladding, and the two metal alloys are added and combined to form a unique bimetal structure. Compared with the strength or hardness of a single metal, the bimetal product has higher strength or hardness. The method of bimetallic arc additive manufacturing is continuous at the macro level, but is heterogeneous in-situ manufacturing at the micro level, subverting the concept of metallurgy, rolling preparation and quenching and tempering modification; through bimetal 3D printed armor protection products, the bimetallic interlaced structure makes the products have high tensile strength, the elongation rate is greatly increased, and the plastic deformation ability is also greatly improved, so that its organizational performance has higher strength, hardness, crack arrest ability and Bearing high impact resistance and other properties, the manufactured products (parts) can be applied to some special products that require structure-function integration, such as the preparation of armored vehicles.
附图说明Description of the drawings
图1为本发明打印方法中增材制造软件对待打印的工件进行建模，并根据材质本身性能对其进行分层切片；Fig. 1 is the modeling of the workpiece to be printed by the additive manufacturing software in the printing method of the present invention, and slices it in layers according to the properties of the material itself;
图2为本发明方法的实施例1中奇数层的打印方式示意图；2 is a schematic diagram of a printing method of odd-numbered layers in Embodiment 1 of the method of the present invention;
图3为本发明方法的实施例1中偶数层的打印方式示意图；3 is a schematic diagram of the printing method of even-numbered layers in Embodiment 1 of the method of the present invention;
图4为本发明方法的实施例2中奇数层的打印方式示意图；4 is a schematic diagram of a printing method of odd layers in Embodiment 2 of the method of the present invention;
图5为本发明方法中双丝MIG/MAG焊机的工作原理图；Fig. 5 is a working principle diagram of a twin-wire MIG/MAG welding machine in the method of the present invention;
图6为图5的局部放大图。Fig. 6 is a partial enlarged view of Fig. 5.
本发明的实施方式Embodiments of the invention
根据下述实施例，可以更好地理解本发明。然而，本领域的技术人员容易理解，实施例所描述的内容仅用于说明本发明，而不应当也不会限制权利要求书中所详细描述的本发明。According to the following examples, the present invention can be better understood. However, those skilled in the art can easily understand that the content described in the embodiments is only used to illustrate the present invention, and should not and will not limit the present invention described in detail in the claims.
本发明方法采用双丝MIG/MAG焊机作为热源，通过增材制造软件控制驱动，让双丝焊机里面两种不同的丝材金属交替熔覆，从而进行电弧增材的制造过程。The method of the present invention uses a double-wire MIG/MAG welding machine as a heat source, and is driven by additive manufacturing software to control and drive two different wire metals in the double-wire welding machine to alternately cladding, thereby performing an arc additive manufacturing process.
在双丝焊中，每个焊接电源有其独立的控制系统，并配有独立控制的送丝机。两个焊接电源之间有一个协同控制器，可以得到两根焊丝之间完美的熔滴过渡配合时间。每个焊接电源上都有持续可调参数，可根据母材，填充金属和保护气体来调节电源特性，以在堆焊更大截面的焊缝或者使用更大的焊接速度时获得更大的熔敷率。In double wire welding, each welding power source has its own independent control system and is equipped with an independently controlled wire feeder. There is a coordinated controller between the two welding power sources, which can obtain the perfect droplet transition coordination time between the two welding wires. There are continuously adjustable parameters on each welding power source. The power source characteristics can be adjusted according to the base material, filler metal and shielding gas, so as to obtain greater melting when surfacing welds with larger cross-sections or using greater welding speeds. Ratio.
增材制造软件对待打印的工件进行建模，根据该工件的材料性能，确定每层增材层高，用电弧增材制造切片软件在Z方向上对零件数模按照确定层高进行分层切片，得到零件模型的二维轮廓图，使用偏置算法或平行线扫描算法生成每个平面（每层）上对应每个点的增材路径。The additive manufacturing software models the workpiece to be printed, and determines the height of each additive layer according to the material properties of the workpiece, and uses the arc additive manufacturing slicing software to slice the digital model of the part according to the determined layer height in the Z direction. , Obtain the two-dimensional contour map of the part model, use the offset algorithm or the parallel line scanning algorithm to generate the additive path corresponding to each point on each plane (each layer).
实施例1Example 1
如图1~3所示，本发明采用双金属进行电弧增材制造的方法，该方法采用双丝MIG/MAG焊机作为热源，双金属焊丝中的焊丝A和焊丝B作为熔敷的填充材料，根据增材制造软件生成的切片路径进行直线交替编织熔覆；具体为：利用增材制造软件对待打印的产品进行分层切片，分层切片后，对于奇数层切片的熔覆方式为：每段增材焊道沿X轴方向进行熔覆，每段增材焊道中焊丝A和焊丝B交替熔覆，相邻增材焊道中A焊丝和B焊丝的交替方式错开；对于偶数层切片的焊接方式为：每段增材焊道沿Y轴方向进行熔覆，每段增材焊道中焊丝A和焊丝B交替熔覆，相邻增材焊道中焊丝A和焊丝B的交替方式错开。As shown in Figures 1 to 3, the present invention adopts a bimetallic arc additive manufacturing method. The method uses a dual-wire MIG/MAG welding machine as a heat source, and the welding wire A and the welding wire B in the bimetallic welding wire are used as cladding filler materials , According to the slicing path generated by the additive manufacturing software to perform linear alternating weaving and cladding; specifically: using the additive manufacturing software to slice the product to be printed in layers. After layered slicing, the cladding method for odd-numbered slices is: Sections of additive weld bead are cladding along the X-axis direction. In each section of additive bead, wire A and wire B are alternately cladding, and the alternate method of A wire and B wire in adjacent additive bead is staggered; the welding method for even-numbered layer slices is: every Segments of the additive weld bead are cladding along the Y-axis direction. In each segment of the additive weld bead, the welding wire A and the welding wire B are alternately cladding, and the alternating patterns of the welding wire A and the welding wire B in the adjacent additive weld bead are staggered.
实施例2Example 2
如图4所示，本发明采用双金属进行电弧增材制造的方法，该方法采用双丝MIG/MAG焊机作为热源，双金属熔丝中的焊丝A和焊丝B作为熔敷的填充材料，根据增材制造软件生成的切片路径进行直线交替编织熔覆；具体为：利用增材制造软件对待打印的产品进行分层切片，分层切片后，对于奇数层切片的熔覆方式为：每段增材焊道沿X轴方向进行熔覆，每段增材焊道中焊丝A和焊丝B交替熔覆；对于偶数层切片的熔覆方式为：每段增材焊道沿Y轴方向进行熔覆，每段增材焊道中焊丝A和焊丝B交替熔覆。As shown in Figure 4, the present invention adopts a bimetallic arc additive manufacturing method. The method uses a dual-wire MIG/MAG welding machine as a heat source, and the welding wire A and the welding wire B in the bimetallic fuse are used as the deposited filler material. Perform linear alternating weaving and cladding according to the slice path generated by the additive manufacturing software; specifically: use the additive manufacturing software to slice the product to be printed in layers. After layered slices, the cladding method for odd-numbered slices is: each segment of additive The weld bead is cladding along the X axis, and the welding wire A and the wire B are alternately cladding in each segment of the additive weld; the cladding method for even-numbered slices is: each segment of the additive bead is cladding along the Y axis, and each segment of the additive bead has the wire A and wire B are alternately cladding.
本发明利用双金属丝焊作为电弧增材制造的热源，两套独立的电源和送丝机分别控制两种不同种类金属的丝材（焊丝A和焊丝B），区别电弧双丝焊接的是双金属电弧增材制造的焊丝A和焊丝B并不是同时熔覆，而是根据增材制造软件生成的切片路径进行直线交替编织熔覆。双金属增材在单位面积或者单位长度上，两种金属的占比是可以调整。The present invention uses bimetallic wire welding as the heat source for arc additive manufacturing. Two sets of independent power sources and wire feeders respectively control two different types of metal wires (wire A and wire B). The difference between arc twin wire welding is double The welding wire A and the welding wire B of the metal arc additive manufacturing are not cladding at the same time. Instead, the slicing path generated by the additive manufacturing software is linearly alternately braided and cladding. The ratio of the two metals in the unit area or unit length of the bimetallic additive can be adjusted.
采用本发明实施例2的方式进行双金属电弧增材制造，选择的双金属材料的两种丝材为不锈钢316L焊丝（焊丝A）和镍基焊丝ER NiCrMo-3焊丝（焊丝B）；焊丝A的焊接电流为160A，沉积速度为10mm/S，焊丝B的焊接电流为170A，沉积速度为10mm/S，两种金属焊丝的沉积时间也可以调整，期间可根据实际情况调节电流大小；层与层之间设置等待时间，每层的层间等待时间为40S，可调整。打印体积为110mm*85mm*57mm，打印时间为70min，打印完毕后自然冷却至室温即可。The bimetallic arc additive manufacturing is carried out in the method of Example 2 of the present invention. The two selected bimetallic materials are stainless steel 316L welding wire (welding wire A) and nickel-based welding wire ER NiCrMo-3 welding wire (welding wire B); welding wire A The welding current is 160A, the deposition speed is 10mm/S, the welding current of wire B is 170A, and the deposition speed is 10mm/S. The deposition time of the two metal wires can also be adjusted, during which the current can be adjusted according to the actual situation; The waiting time is set between the layers, and the waiting time between each layer is 40S, which can be adjusted. The printing volume is 110mm*85mm*57mm, and the printing time is 70min. After printing, it can be cooled to room temperature naturally.

Claims (4)

  1. 一种基于MIG/MAG热源的双金属电弧增材制造方法，其特征在于：该方法采用双丝MIG/MAG焊机作为热源，双金属焊丝中的焊丝A和焊丝B作为熔敷的填充材料，根据增材制造软件生成的切片路径进行直线交替编织熔覆。A bimetallic arc additive manufacturing method based on MIG/MAG heat source is characterized in that: the method uses a dual-wire MIG/MAG welding machine as the heat source, and the welding wire A and the welding wire B in the bimetallic welding wire are used as cladding filler materials, According to the slicing path generated by the additive manufacturing software, the linear alternating braiding cladding is performed.
  2. 根据权利要求1所述的基于MIG/MAG热源的双金属电弧增材制造方法，其特征在于，具体为：利用增材制造软件对待打印的产品进行分层切片，分层切片后，对于奇数层切片的熔覆方式为：每段增材焊道沿X轴方向进行堆积熔覆，每段增材焊道中焊丝A和焊丝B交替熔覆；对于偶数层切片的熔覆方式为：每段增材焊道沿Y轴方向进行堆积熔覆，每段增材焊道中焊丝A和焊丝B交替熔覆。The method for bimetallic arc additive manufacturing based on MIG/MAG heat source according to claim 1, characterized in that: the product to be printed is sliced layer by layer using additive manufacturing software, and after layered and sliced, the odd layer The cladding method of the slices is: each section of additive weld bead is deposited along the X axis, and the welding wire A and the welding wire B are alternately cladding in each section of the additive weld; the cladding method for the even-numbered layer of slices is: each section of the additive weld is along the Y axis Stacking cladding is performed in each direction, and the welding wire A and the welding wire B are alternately cladding in each segment of the additive weld.
  3. 根据权利要求1所述的基于MIG/MAG热源的双金属电弧增材制造方法，其特征在于，具体为：利用增材制造软件对待打印的产品进行分层切片，分层切片后，对于奇数层切片的熔覆方式为：每段增材焊道沿X轴方向进行堆积熔覆，每段增材焊道中焊丝A和焊丝B交替熔覆，相邻增材焊道中A焊丝和B焊丝的交替方式错开；对于偶数层切片的焊接方式为：每段增材焊道沿Y轴方向进行堆积熔覆，每段增材焊道中焊丝A和焊丝B交替熔覆，相邻增材焊道中焊丝A和焊丝B的交替方式错开。The method for bimetallic arc additive manufacturing based on MIG/MAG heat source according to claim 1, characterized in that: the product to be printed is sliced layer by layer using additive manufacturing software, and after layered and sliced, the odd layer The cladding method of the slice is: each section of additive weld bead is accumulated and cladding along the X-axis direction, and the welding wire A and the welding wire B in each section of the additive weld are alternately cladding, and the alternating method of the A wire and the B wire in the adjacent additive weld bead is staggered; The welding method for even-numbered slices is: each additive weld bead is deposited and cladding along the Y-axis direction, and the welding wire A and the welding wire B in each additive welding bead are alternately cladding, and the alternating ways of the welding wire A and the welding wire B in the adjacent additive welding bead are staggered.
  4. 根据权利要求2或3所述的基于MIG/MAG热源的双金属电弧增材制造方法，其特征在于：每段增材焊道的单位长度为L，L=X%焊丝A+(1-X%)%焊丝B。The bimetallic arc additive manufacturing method based on MIG/MAG heat source according to claim 2 or 3, characterized in that: the unit length of each segment of additive weld bead is L, L=X% welding wire A+(1-X%)% Welding wire B.
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