CN106271189A - A kind of welding wire with small grains tissue or the preparation method of welding rod - Google Patents
A kind of welding wire with small grains tissue or the preparation method of welding rod Download PDFInfo
- Publication number
- CN106271189A CN106271189A CN201610712701.7A CN201610712701A CN106271189A CN 106271189 A CN106271189 A CN 106271189A CN 201610712701 A CN201610712701 A CN 201610712701A CN 106271189 A CN106271189 A CN 106271189A
- Authority
- CN
- China
- Prior art keywords
- welding
- melt
- copper
- magnesium
- alloys
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
- 238000003466 welding Methods 0.000 title claims abstract description 82
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 239000010949 copper Substances 0.000 claims abstract description 26
- 229910000861 Mg alloy Inorganic materials 0.000 claims abstract description 21
- 239000000155 melt Substances 0.000 claims abstract description 21
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 19
- 229910052802 copper Inorganic materials 0.000 claims abstract description 19
- 239000000956 alloy Substances 0.000 claims abstract description 15
- 239000002245 particle Substances 0.000 claims abstract description 15
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 13
- 229910000881 Cu alloy Inorganic materials 0.000 claims abstract description 12
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 12
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000011777 magnesium Substances 0.000 claims abstract description 12
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 12
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 11
- 229910052751 metal Inorganic materials 0.000 claims abstract description 11
- 239000002184 metal Substances 0.000 claims abstract description 11
- 230000008018 melting Effects 0.000 claims abstract description 8
- 238000002844 melting Methods 0.000 claims abstract description 8
- 230000001681 protective effect Effects 0.000 claims abstract description 7
- 238000003756 stirring Methods 0.000 claims abstract description 6
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims abstract description 5
- 238000005219 brazing Methods 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 21
- 238000003723 Smelting Methods 0.000 claims description 10
- NGONBPOYDYSZDR-UHFFFAOYSA-N [Ar].[W] Chemical compound [Ar].[W] NGONBPOYDYSZDR-UHFFFAOYSA-N 0.000 claims description 4
- 239000007789 gas Substances 0.000 claims description 2
- 239000011261 inert gas Substances 0.000 claims description 2
- 230000004927 fusion Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 6
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 6
- 230000007797 corrosion Effects 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 230000035882 stress Effects 0.000 description 5
- 230000035945 sensitivity Effects 0.000 description 4
- 238000007711 solidification Methods 0.000 description 4
- 230000008023 solidification Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 238000009749 continuous casting Methods 0.000 description 2
- BERDEBHAJNAUOM-UHFFFAOYSA-N copper(I) oxide Inorganic materials [Cu]O[Cu] BERDEBHAJNAUOM-UHFFFAOYSA-N 0.000 description 2
- 229910052593 corundum Inorganic materials 0.000 description 2
- KRFJLUBVMFXRPN-UHFFFAOYSA-N cuprous oxide Chemical compound [O-2].[Cu+].[Cu+] KRFJLUBVMFXRPN-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002105 nanoparticle Substances 0.000 description 2
- 229910001845 yogo sapphire Inorganic materials 0.000 description 2
- 229910020068 MgAl Inorganic materials 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
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
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/28—Selection of soldering or welding materials proper with the principal constituent melting at less than 950 degrees C
- B23K35/284—Mg as the principal constituent
-
- 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
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/28—Selection of soldering or welding materials proper with the principal constituent melting at less than 950 degrees C
- B23K35/286—Al as the principal constituent
-
- 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
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/302—Cu as the principal constituent
-
- 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
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/3601—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest with inorganic compounds as principal constituents
- B23K35/3602—Carbonates, basic oxides or hydroxides
-
- 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
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/40—Making wire or rods for soldering or welding
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Nonmetallic Welding Materials (AREA)
- Arc Welding In General (AREA)
Abstract
本发明公开一种具有细小晶粒组织的焊丝或焊条的制备方法，包括，对铝及铝合金、镁及镁合金、铜及铜合金或其任意组合物进行熔炼形成熔体；熔炼结束后，在保护气氛中冷却至低于液相线温度接近但高于固相线温度；给熔体施加强烈搅拌，使熔体中的氧化膜发生破碎形成相应纳米尺度的MgO、Al2O3或Cu2O颗粒或者加入人工合成的相应纳米尺度的MgO、Al2O3或Cu2O颗粒，并使其均匀分布于熔体中；进行浇注，对铸锭进行拉拔，形成焊丝或焊条。本发明显著细化该类合金焊缝金属的组织，提高焊缝的性能，特别适合于镁及镁合金、铝及铝合金或铜及铜合金的熔化焊、钎焊或焊接修复。
The invention discloses a preparation method of welding wire or welding rod with fine grain structure, which comprises melting aluminum and aluminum alloy, magnesium and magnesium alloy, copper and copper alloy or any combination thereof to form a melt; after the melting is completed, Cool in a protective atmosphere to a temperature lower than the liquidus temperature but higher than the solidus temperature; apply strong stirring to the melt to break the oxide film in the melt to form corresponding nanoscale MgO, Al 2 O 3 or Cu 2 O particles or artificially synthesized corresponding nanoscale MgO, Al 2 O 3 or Cu 2 O particles, and make it evenly distributed in the melt; pouring, drawing the ingot to form welding wire or electrode. The invention significantly refines the structure of the welding seam metal of such alloys, improves the performance of the welding seam, and is especially suitable for fusion welding, brazing or welding repair of magnesium and magnesium alloys, aluminum and aluminum alloys, or copper and copper alloys.
Description
技术领域technical field
本发明属于焊接技术领域的焊接材料，特别用于铝及铝合金、镁及镁合金或铜及铜合金焊丝或焊条的制备。The invention belongs to welding materials in the technical field of welding, and is especially used for the preparation of aluminum and aluminum alloys, magnesium and magnesium alloys, or copper and copper alloy welding wires or electrodes.
背景技术Background technique
铝及铝合金、镁及镁合金密度小，比强度高，抗震减噪性好，承受冲击载荷能力大等性能优点，广泛用于制造业中轻金属结构材料。铜及铜合金具有优良的导热、导电性能，在有传热效率和低电阻要求的结构中也得到广泛的应用。其中，焊接技术作为关键制造技术对上述合金材料的结构安全性和服役性能具有重要的影响。铝及铝合金、镁及镁合金、铜及铜合金焊接的主要问题是接头中的裂纹、气孔、变形和腐蚀问题。焊缝组织晶粒细化可增加晶界总长与面积，分割焊缝为若干细小的晶粒单元，消除宏观偏析、使低熔点相均匀分布；同时，液体收缩单元体积减小，缓解了体积应力与热应力，提高了抗裂敏感性；根据Holl-Petch关系，晶粒细化能有效提高材料的强度而不损害其塑性与韧性。由此可知，焊缝金属的晶粒细化对保障焊接质量具有重要的意义。Aluminum and aluminum alloys, magnesium and magnesium alloys have low density, high specific strength, good shock resistance and noise reduction, and high impact load capacity. They are widely used in light metal structural materials in the manufacturing industry. Copper and copper alloys have excellent thermal conductivity and electrical conductivity, and are also widely used in structures that require heat transfer efficiency and low resistance. Among them, welding technology, as a key manufacturing technology, has an important impact on the structural safety and service performance of the above-mentioned alloy materials. The main problems in the welding of aluminum and aluminum alloys, magnesium and magnesium alloys, copper and copper alloys are cracks, porosity, deformation and corrosion in the joints. The grain refinement of the weld structure can increase the total length and area of the grain boundary, divide the weld into several fine grain units, eliminate macro segregation, and make the low melting point phase evenly distributed; at the same time, the volume of the liquid shrinkage unit is reduced, which relieves the volume stress According to the Holl-Petch relationship, grain refinement can effectively improve the strength of the material without compromising its plasticity and toughness. It can be seen that the grain refinement of weld metal is of great significance to ensure the welding quality.
对现有技术文献的检索可知，为了获得细小的焊缝组织，美国专利US20080193792A1和中国专利CN 201210398811.2公开了一种Ti、B微合金化铝合金焊丝，焊缝中形成了TiB2和TiC颗粒，显著细化了铝合金焊缝组织。但是，如果在焊缝中形成了Al3Ti颗粒，伴随焊缝中过量自由Ti的存在，会大大降低铝合金焊缝的性能；WO 1999017903A1公开了一种Ti、Zr微合金化的铝合金焊丝，具有高的强度和高的抗裂性，除了过量自由Ti的危害之外，过量Zr的存在导致粗大针状金属间化合物的产生，容易导致焊丝在拉拔过程中发生断裂；专利EP1775037A1公开了一种Zr微合金化的镁合金制备方法，但是在连续拉拔或挤压过程中需要进行中间处理工艺，而单独的Zr微合金化并不能满足焊缝具有足够的强度。A search of prior art documents shows that in order to obtain a fine weld structure, US Patent US20080193792A1 and Chinese Patent CN 201210398811.2 disclose a Ti, B microalloyed aluminum alloy welding wire, and TiB 2 and TiC particles are formed in the weld, Significantly refines the microstructure of aluminum alloy welds. However, if Al 3 Ti particles are formed in the weld, accompanied by the existence of excessive free Ti in the weld, the performance of the aluminum alloy weld will be greatly reduced; WO 1999017903A1 discloses a Ti, Zr microalloyed aluminum alloy welding wire , has high strength and high crack resistance. In addition to the hazards of excessive free Ti, the existence of excessive Zr leads to the generation of coarse acicular intermetallic compounds, which easily leads to the fracture of the welding wire during the drawing process; patent EP1775037A1 discloses A Zr microalloying magnesium alloy preparation method, but an intermediate treatment process is required in the continuous drawing or extrusion process, and Zr microalloying alone cannot satisfy the welding seam with sufficient strength.
另外，随着合金含量的增加，合金的液固温度区间变宽，裂纹敏感性增加；还可能降低合金的耐蚀性，同时增加了制造成本，比如CN 201010219084.X公开的一种镁合金焊丝及制备方法，大量的使用了稀土元素。如果在焊缝凝固过程中引入外场，比如磁场、超声波、振动场，通常可以获得细化的焊缝组织。但是，由于外场形成设备的使用增加了工艺成本和设备成本，在很多场合并不实用。In addition, as the alloy content increases, the liquid-solid temperature range of the alloy widens and the crack sensitivity increases; it may also reduce the corrosion resistance of the alloy and increase the manufacturing cost, such as a magnesium alloy welding wire disclosed in CN 201010219084.X And the preparation method uses a large amount of rare earth elements. If an external field, such as a magnetic field, ultrasonic wave, or vibration field, is introduced during the solidification of the weld, a refined weld structure can usually be obtained. However, since the use of external field forming equipment increases the process cost and equipment cost, it is not practical in many occasions.
因此，很有必要开发一种铝及铝合金、镁及镁合金、或铜及铜合金焊丝(焊条)的制备方法解决该类合金现有的焊接问题。Therefore, it is very necessary to develop a method for preparing aluminum and aluminum alloys, magnesium and magnesium alloys, or copper and copper alloy welding wires (welding rods) to solve the existing welding problems of such alloys.
发明内容Contents of the invention
本发明的目的在于克服上述现有技术中的不足，提供一种具有细小晶粒组织的焊丝或焊条的制备方法，用该方法制备的焊丝焊接后具有细小的焊缝组织，较高的力学性能，和高的抗气孔敏感性、高的抗裂性和高的耐蚀性。焊缝具有细小的晶粒组织，保证焊缝的力学性能与被焊接材料相当；由于焊缝组织晶粒细小，因此焊缝金属具有高的抗裂性、抗气孔性，焊接残余应力较小。The purpose of the present invention is to overcome the deficiencies in the above-mentioned prior art, to provide a kind of preparation method of welding wire or welding rod with fine grain structure, the welding wire prepared by this method has fine weld seam structure after welding, higher mechanical properties , and high anti-porosity sensitivity, high crack resistance and high corrosion resistance. The weld has a fine grain structure, which ensures that the mechanical properties of the weld are equivalent to those of the welded material; due to the fine grain of the weld structure, the weld metal has high crack resistance and porosity resistance, and the welding residual stress is small.
本发明的技术解决方案如下：Technical solution of the present invention is as follows:
一种具有细小晶粒组织的焊丝或焊条的制备方法，包括如下步骤，包括：合金的熔炼、浇注、连铸、挤压或拉拔，最后成丝。A method for preparing welding wire or welding rod with fine grain structure, comprising the following steps: alloy melting, pouring, continuous casting, extruding or drawing, and finally wire forming.
步骤1，对铝、铝合金、镁、镁合金、铜、铜合金或其任意组合物进行熔炼形成熔体；Step 1, melting aluminum, aluminum alloy, magnesium, magnesium alloy, copper, copper alloy or any combination thereof to form a melt;
步骤2，熔炼结束后，在保护气氛中冷却至低于液相线温度高于固相线温度；Step 2, after the smelting is completed, cool in a protective atmosphere to a temperature lower than the liquidus temperature and higher than the solidus temperature;
步骤3，给熔体施加强烈搅拌，使熔体中的氧化膜发生破碎形成相应纳米尺度的MgO、Al2O3或Cu2O颗粒，或者加入人工合成的MgO、Al2O3或Cu2O颗粒，并使其均匀分布于熔体中；Step 3 , apply strong stirring to the melt to break the oxide film in the melt to form corresponding nanoscale MgO, Al2O3 or Cu2O particles, or add artificially synthesized MgO, Al2O3 or Cu2O particles, and make It is evenly distributed in the melt;
步骤4，进行浇注，对铸锭进行拉拔，形成焊丝或焊条。Step 4, pouring, drawing the ingot to form welding wire or welding rod.
本发明原理为：铝及铝合金、镁及镁合金、或铜及铜合金熔点较低，化学活性大，很容易在空气中、熔体中发生氧化，在合金材料的表面或熔体的表面形成氧化膜。这些氧化膜在空气中容易吸附水分，熔点远高于合金熔体，在焊接熔池中容易引起气孔。经研究发现，这些氧化膜是由大量的镁、铝或铜的氧化物颗粒组成。在熔体中将这些氧化膜破碎形成纳米尺度的颗粒，可以很好的作为凝固组织的细化剂。然而，在通常情况下，这些纳米尺度的氧化物颗粒聚集成团装或膜状，不具备细化剂细化凝固组织的能力。在焊丝铸锭(连铸)的合金熔体浇注前破碎氧化膜形成(或加入人工合成的)纳米尺度的MgO、Al2O3或Cu2O颗粒，在焊丝中均匀分布。根据所述方法制备的焊丝与钨极氩弧焊、金属极惰性气体保护焊或金属极活性气体保护焊进行焊接，或者进行钎焊，这些在焊丝中均匀分布的纳米尺度的颗粒在焊接熔池中扮演细化剂的角色，可以显著地细化焊缝的凝固组织。有效的提高了抗裂性和抗气孔敏感性，焊缝凝固过程中的组织应力、热应力和拘束应力等都显著降低。The principle of the present invention is: aluminum and aluminum alloys, magnesium and magnesium alloys, or copper and copper alloys have low melting points and high chemical activity, and are easy to oxidize in the air or in the melt. form an oxide film. These oxide films are easy to absorb moisture in the air, the melting point is much higher than that of the alloy melt, and it is easy to cause pores in the weld pool. After research, it is found that these oxide films are composed of a large number of oxide particles of magnesium, aluminum or copper. In the melt, these oxide films are broken to form nano-scale particles, which can be used as a refiner for the solidification structure. However, under normal circumstances, these nanoscale oxide particles aggregate into clusters or films, which do not have the ability of refiners to refine the solidified structure. Before the alloy melt of welding wire casting (continuous casting) is poured, the oxide film is broken to form (or artificially synthesized) nano-scale MgO, Al 2 O 3 or Cu 2 O particles are evenly distributed in the welding wire. The welding wire prepared according to the method is welded with argon tungsten arc welding, metal inert gas shielded welding or metal pole active gas shielded welding, or brazed, and these nanoscale particles uniformly distributed in the welding wire are formed in the welding pool It plays the role of a refiner in it, which can significantly refine the solidification structure of the weld. Effectively improve the crack resistance and anti-porosity sensitivity, and the structural stress, thermal stress and restraint stress in the process of weld solidification are significantly reduced.
利用制备好的焊丝进行钨极氩弧焊(TIG)，或者金属极气体保护焊(MIG或MAG)或者钎焊，该类合金焊缝金属具有细小的晶粒组织和优良性能。Use the prepared welding wire for tungsten argon arc welding (TIG), or metal arc welding (MIG or MAG) or brazing. This type of alloy weld metal has fine grain structure and excellent performance.
与现有技术相比，本发明方法制备的焊丝焊接后焊缝金属具有细小的晶粒组织；焊缝的化学成分与母材基本一致，因此，具有良好的耐蚀性；由于焊缝组织细小，焊缝的抗气孔性和抗裂性均很好，同时，接头的焊接残余应力和变形也得到了显著地抑制。Compared with the prior art, the welding seam metal prepared by the method of the invention has a fine grain structure after welding; the chemical composition of the welding seam is basically the same as that of the base metal, so it has good corrosion resistance; due to the fine grain structure of the welding seam , the anti-porosity and crack resistance of the weld are very good, and at the same time, the welding residual stress and deformation of the joint have also been significantly suppressed.
附图说明Description of drawings
图1a用本发明方法制备的铝合金焊丝铸锭的组织；Fig. 1a uses the structure of the aluminum alloy welding wire ingot prepared by the inventive method;
图1b普通铝合金铸锭的组织；Fig. 1b Microstructure of ordinary aluminum alloy ingot;
图2a用本发明方法制备的紫铜焊丝铸锭的组织；Fig. 2a uses the structure of the red copper welding wire ingot prepared by the inventive method;
图2b普通紫铜铸锭的组织；Figure 2b shows the structure of ordinary red copper ingot;
图3a用本发明制备的AZ31镁合金焊丝的焊缝组织；Fig. 3a uses the weld seam structure of the AZ31 magnesium alloy welding wire prepared by the present invention;
图3b普通AZ31镁合金焊丝的焊缝组织。Fig. 3b Weld microstructure of ordinary AZ31 magnesium alloy welding wire.
图4a用本发明制备的AZ91D镁合金焊丝铸锭的组织；Fig. 4a uses the structure of the AZ91D magnesium alloy welding wire ingot prepared by the present invention;
图4b普通AZ91D镁合金铸锭的组织。Fig. 4b Microstructure of common AZ91D magnesium alloy ingot.
具体实施方式detailed description
下面对本发明的实施例作详细说明：本实施例在以本发明技术方案为前提下进行实施，给出了详细的实施方式和具体的操作过程，但本发明的保护范围不限于下述的实施例。The embodiments of the present invention are described in detail below: the present embodiment is implemented under the premise of the technical solution of the present invention, and detailed implementation and specific operation process are provided, but the protection scope of the present invention is not limited to the following implementation example.
实施例1：Example 1:
选择Al-5Mg合金进行熔炼，熔炼结束后让Al-5Mg合金熔体在保护气氛中随炉冷却，等冷却到低于液相线温度接近但高于固相线温度时，给熔体施加强烈搅拌，使Al-5Mg熔体中的氧化膜发生破碎形成纳米尺度的MgO和MgAl氧化物颗粒，并使其均匀分布于熔体中，然后进行浇注。用本发明方法制备的焊丝铸锭的组织组织细小，平均尺寸400μm，常规铸锭的组织900μm，效果显著，如图1所示。Select Al-5Mg alloy for smelting. After smelting, let the Al-5Mg alloy melt cool with the furnace in a protective atmosphere. When the temperature is lower than the liquidus line but higher than the solidus line temperature, apply strong Stir to break the oxide film in the Al-5Mg melt to form nanoscale MgO and MgAl oxide particles, and make them evenly distributed in the melt, and then pour. The microstructure of the welding wire ingot prepared by the method of the present invention is fine, with an average size of 400 μm, and the structure of the conventional ingot is 900 μm, and the effect is remarkable, as shown in FIG. 1 .
实施例2：Example 2:
选择紫铜(纯铜)进行熔炼，熔炼结束后让紫铜熔体在保护气氛中随炉冷却，等冷却到低于液相线温度接近但高于固相线温度时，给熔体施加强烈搅拌，使紫铜熔体中的氧化膜发生破碎形成纳米尺度的Cu2O氧化物颗粒，并使其均匀分布于熔体中，然后进行浇注。用本发明方法制备的焊丝铸锭的组织组织细小，与常规铸锭的组织相比，效果显著，如图2所示。Select red copper (pure copper) for smelting. After smelting, let the red copper melt cool with the furnace in a protective atmosphere. When it is cooled to a temperature lower than the liquidus line but higher than the solidus line temperature, apply strong stirring to the melt. The oxide film in the copper melt is broken to form nanoscale Cu 2 O oxide particles, which are evenly distributed in the melt, and then poured. The structure of the welding wire ingot prepared by the method of the present invention is fine, compared with the structure of the conventional ingot, the effect is remarkable, as shown in FIG. 2 .
实施例3：Example 3:
选择AZ31镁合金进行熔炼，熔炼结束后让AZ31熔体在保护气氛中随炉冷却，等冷却到低于液相线温度接近但高于固相线温度时，给熔体施加强烈搅拌，使AZ31熔体中的氧化膜发生破碎形成纳米尺度的MgO氧化物颗粒，并使其均匀分布于熔体中，然后进行浇注，对铸锭进行拉拔，最后制备出焊丝。用本发明方法制备的焊丝进行钨极氩弧焊，焊缝组织细小，平均尺寸40-70μm，普通镁合金焊丝焊接后焊缝的组织为120-200μm，与普通镁合金焊丝的焊缝相比，本发明方法获得的焊丝的焊缝组织细化效果显著，如图3所示。Select AZ31 magnesium alloy for smelting. After smelting, let the AZ31 melt cool with the furnace in a protective atmosphere. When it is cooled to a temperature lower than the liquidus temperature but higher than the solidus temperature, apply strong stirring to the melt to make the AZ31 The oxide film in the melt is broken to form nano-scale MgO oxide particles, which are evenly distributed in the melt, and then poured, the ingot is drawn, and finally the welding wire is prepared. When the welding wire prepared by the method of the present invention is used for argon tungsten arc welding, the weld seam structure is fine, with an average size of 40-70 μm. , the welding wire obtained by the method of the present invention has a remarkable effect of refining the weld structure, as shown in FIG. 3 .
实施例4：Example 4:
选择AZ91D镁合金进行熔炼，熔炼结束后让AZ91D镁合金熔体在保护气氛中随炉冷却，等冷却到低于液相线温度接近但高于固相线温度时，在熔体中加入人工合成的纳米尺度的MgO氧化物颗粒，并使其均匀分布于熔体中，然后进行浇注。用本发明方法制备的焊丝铸锭的组织组织细小，平均尺寸80μm，常规铸锭的组织200μm，与常规铸锭的组织相比效果显著，如图4所示。Select AZ91D magnesium alloy for smelting. After smelting, let the AZ91D magnesium alloy melt cool with the furnace in a protective atmosphere. When it is cooled to a temperature lower than the liquidus line but higher than the solidus line temperature, add artificial synthetic The nanoscale MgO oxide particles are uniformly distributed in the melt, and then poured. The structure of the welding wire ingot prepared by the method of the present invention is fine, with an average size of 80 μm, and the structure of the conventional ingot is 200 μm. Compared with the structure of the conventional ingot, the effect is remarkable, as shown in FIG. 4 .
由图1-图4可见，用本发明方法制备的铝合金、紫铜(纯铜)、镁合金焊丝铸锭(焊缝)具有细小的晶粒组织，可以显著改善该类合金焊缝的抗气孔性、抗热裂性和优良的力学性能和耐蚀性能，实施效果良好。用本发明制备的焊丝或焊条，通过铸锭的拉拔或挤压制造；焊丝或焊条的化学成分与被焊接材料的化学成分相同或不同；用本发明制备的焊丝或焊条焊接后焊缝的晶粒组织细小，焊缝的抗裂性好，抗气孔敏感性高，力学性能优良。用本发明制备的焊丝或焊条，特别适合于镁及镁合金、铝及铝合金或铜及铜合金的熔化焊、钎焊或焊接修复。As can be seen from Fig. 1-Fig. 4, the aluminum alloy, red copper (pure copper), magnesium alloy welding wire ingot (weld seam) prepared by the inventive method has fine grain structure, can significantly improve the anti-porosity of this type alloy weld seam Resistance, thermal crack resistance and excellent mechanical properties and corrosion resistance, the implementation effect is good. The welding wire or welding rod prepared by the present invention is produced by drawing or extruding an ingot; the chemical composition of the welding wire or welding rod is the same as or different from that of the material to be welded; the weld seam after welding with the welding wire or welding rod prepared by the present invention The grain structure is fine, the crack resistance of the weld is good, the anti-porosity sensitivity is high, and the mechanical properties are excellent. The welding wire or welding rod prepared by the invention is especially suitable for fusion welding, brazing or welding repair of magnesium and magnesium alloys, aluminum and aluminum alloys or copper and copper alloys.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610712701.7A CN106271189B (en) | 2016-08-24 | 2016-08-24 | A kind of preparation method of welding wire or welding rod with small grains tissue |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610712701.7A CN106271189B (en) | 2016-08-24 | 2016-08-24 | A kind of preparation method of welding wire or welding rod with small grains tissue |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106271189A true CN106271189A (en) | 2017-01-04 |
| CN106271189B CN106271189B (en) | 2018-09-14 |
Family
ID=57615869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610712701.7A Expired - Fee Related CN106271189B (en) | 2016-08-24 | 2016-08-24 | A kind of preparation method of welding wire or welding rod with small grains tissue |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106271189B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108080811A (en) * | 2017-06-12 | 2018-05-29 | 吉林大学 | One kind contains micro-nano TiC-TiB2Particle aluminium alloy welding wire wire rod |
| CN110625297A (en) * | 2019-09-19 | 2019-12-31 | 北京科技大学 | A kind of preparation method of high-strength and toughness steel welding wire containing nano-particles |
| CN111745322A (en) * | 2020-05-22 | 2020-10-09 | 西安斯瑞先进铜合金科技有限公司 | Preparation method of novel copper-iron welding wire |
| CN112264592A (en) * | 2020-09-24 | 2021-01-26 | 中铝材料应用研究院有限公司 | High-speed mechanical stirring casting-rolling device and method for magnesium alloy thin strip |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101823190A (en) * | 2010-05-21 | 2010-09-08 | 桂林市银箭焊接材料有限公司 | Aluminium-silicon alloy welding wire and preparation method thereof |
| CN103831422A (en) * | 2012-11-27 | 2014-06-04 | 中国兵器科学研究院宁波分院 | Nanometer refining method of Al-Si system aluminum alloy structure |
| CN103924128A (en) * | 2014-03-26 | 2014-07-16 | 南昌大学 | Preparation method of nanometer alumina reinforced aluminum-based composite material |
| JP2014144465A (en) * | 2013-01-28 | 2014-08-14 | Fujitsu Ltd | Solder paste and conductive adhesive, method for manufacturing the same, method for manufacturing semiconductor device, and semiconductor device |
| CN104878238A (en) * | 2015-05-22 | 2015-09-02 | 上海交通大学 | Method for preparing nano-particle dispersed ultrafine grain metal matrix nano composite |
| CN105081611A (en) * | 2015-09-22 | 2015-11-25 | 山东大学 | Special fine-diameter flux-cored wire for hot-working die repairing surfacing |
-
2016
- 2016-08-24 CN CN201610712701.7A patent/CN106271189B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101823190A (en) * | 2010-05-21 | 2010-09-08 | 桂林市银箭焊接材料有限公司 | Aluminium-silicon alloy welding wire and preparation method thereof |
| CN103831422A (en) * | 2012-11-27 | 2014-06-04 | 中国兵器科学研究院宁波分院 | Nanometer refining method of Al-Si system aluminum alloy structure |
| JP2014144465A (en) * | 2013-01-28 | 2014-08-14 | Fujitsu Ltd | Solder paste and conductive adhesive, method for manufacturing the same, method for manufacturing semiconductor device, and semiconductor device |
| CN103924128A (en) * | 2014-03-26 | 2014-07-16 | 南昌大学 | Preparation method of nanometer alumina reinforced aluminum-based composite material |
| CN104878238A (en) * | 2015-05-22 | 2015-09-02 | 上海交通大学 | Method for preparing nano-particle dispersed ultrafine grain metal matrix nano composite |
| CN105081611A (en) * | 2015-09-22 | 2015-11-25 | 山东大学 | Special fine-diameter flux-cored wire for hot-working die repairing surfacing |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108080811A (en) * | 2017-06-12 | 2018-05-29 | 吉林大学 | One kind contains micro-nano TiC-TiB2Particle aluminium alloy welding wire wire rod |
| CN110625297A (en) * | 2019-09-19 | 2019-12-31 | 北京科技大学 | A kind of preparation method of high-strength and toughness steel welding wire containing nano-particles |
| CN110625297B (en) * | 2019-09-19 | 2021-02-12 | 北京科技大学 | Preparation method of high-strength and high-toughness steel welding wire containing nano particles |
| CN111745322A (en) * | 2020-05-22 | 2020-10-09 | 西安斯瑞先进铜合金科技有限公司 | Preparation method of novel copper-iron welding wire |
| CN112264592A (en) * | 2020-09-24 | 2021-01-26 | 中铝材料应用研究院有限公司 | High-speed mechanical stirring casting-rolling device and method for magnesium alloy thin strip |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106271189B (en) | 2018-09-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106271189B (en) | A kind of preparation method of welding wire or welding rod with small grains tissue | |
| CN101716704B (en) | Al-Mg-Er welding wire and preparation process thereof | |
| CN103273214B (en) | A kind of high-strength aluminium zinc-magnesium scandium alloy welding wire and preparation method thereof | |
| CN101380703B (en) | Multiple microalloying scandium-containing hydronalium welding wire and preparation method thereof | |
| CN101219508A (en) | A seamless flux-cored aluminum welding wire and its manufacturing method | |
| CN104722945A (en) | Ultra-fine grain aluminum alloy gold welding wire and preparation method thereof | |
| CN103358051B (en) | A kind of copper base solder and preparation method thereof | |
| CN108486431A (en) | Selective laser melting process Al-Si-Mg line aluminium alloys composition and molded part preparation method | |
| CN102773630B (en) | Medium-temperature high-strength aluminum alloy powder solder and preparation method thereof | |
| CN106636780B (en) | A kind of ultrafine aluminum alloy conductor and preparation method thereof | |
| CN109128572B (en) | Welding wire for aluminum-copper alloy and preparation method and application thereof | |
| CN108330362A (en) | A kind of the high-strength temperature-resistant casting Al-Cu alloy and preparation process of low porosity | |
| CN113020838B (en) | A kind of aluminum base solder, preparation method and application thereof | |
| CN111843109A (en) | A repair welding method for reducing welding cracks of magnesium rare earth alloy castings | |
| CN100593451C (en) | Manufacturing method of two-stage slotless mold casing for soft contact electromagnetic continuous casting | |
| CN104476011A (en) | High-entropy alloy welding wire for welding titanium/low-carbon steel in TIG (Tungsten Inert Gas) mode and application | |
| CN108543931B (en) | A kind of manufacturing method of MgAl composite casting | |
| CN1785580A (en) | High strength low heat cracking aluminium copper serial alloy welding wire, its preparation method and application | |
| CN106862796A (en) | A kind of aluminium copper earthing material welding wire and preparation method thereof | |
| CN107790652A (en) | A kind of aluminium/magnesium base composite material continuously casting preparation method | |
| CN118081177A (en) | A high-strength Al-Si alloy welding wire and preparation method thereof | |
| CN101850481B (en) | Copper alloy solder wire for fusion welding of thick and big red copper member and preparation method thereof | |
| CN109434319A (en) | TIG (tungsten inert gas) welding wire for aluminum alloy and preparation method thereof | |
| Zhang et al. | Wetting behavior of a novel Al-Si-Ti active brazing filler metal foil on aluminum matrix composite | |
| TWI692530B (en) | Aluminum alloy powder and its manufacturing method, aluminum alloy product and its manufacturing method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180914 Termination date: 20210824 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |