刘佳旺,刘岩,姚宇,等.DP980双相钢CMT增材单道直壁体成形特性[J].精密成形工程,2025,17(1):117-126.
LIU Jiawang,LIU Yan,YAO Yu,et al.Forming Characteristics of CMT Additive Single-pass Straight Wall of DP980 Dual Phase Steel[J].Journal of Netshape Forming Engineering,2025,17(1):117-126. |
| DP980双相钢CMT增材单道直壁体成形特性 |
| Forming Characteristics of CMT Additive Single-pass Straight Wall of DP980 Dual Phase Steel |
| 投稿时间：2024-05-29 |
| DOI：10.3969/j.issn.1674-6457.2025.01.014 |
| 中文关键词: DP980双相钢 增材制造 增材直壁体 成形特性 冷金属过渡焊 |
| 英文关键词: DP980 dual phase steel additive manufacturing additive straight wall forming characteristics cold metal transition welding |
| 基金项目:辽宁省自然科学基金计划(2023-MS-320) |
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| 摘要点击次数: 44 |
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| 中文摘要: |
| 目的 研究不同工艺参数下DP980双相钢单道直壁体成形特性。方法 采用直径1.0 mm的ER120S-G焊丝，选用Q235钢板为基板，基于冷金属过渡(CMT)增材技术，利用Fronius CMT焊机对DP980双相钢进行增材实验，并对增材试样截面的余高、熔宽、成形高度及成形宽度进行测量和分析。结果 对于单道单层增材试样，随着送丝速度从2.5 m/min逐渐增加到8.0 m/min，熔宽与余高皆呈上升趋势，且熔宽的变化幅度较大;当焊接速度从300 mm/min逐步增至700 mm/min时，焊道的熔宽和余高皆呈现出减小的趋势;对于单道多层增材试样，固定其他参数不变，在往复式增材路径下，墙体成形均匀平直，两端尺寸相近，分别为4.7 cm和4.6 cm;固定其他参数不变，当送丝速度和层间温度升高时，增材直壁体试样成形宽度与高度增大。当焊接速度增大时，增材直壁体试样成形宽度与高度减小。结论 在单层单道增材制造过程中，通过调整送丝速度和焊接速度的大小，可以有效地控制熔宽和余高，从而确保增材试样的成形质量;往复式增材路径使单道多层增材直壁体的成形更为稳定。单道多层增材试样的成形宽度与高度主要受送丝速度、焊接速度、层间温度的影响。采用CMT增材制造工艺可以实现DP980双相钢的制造，得到良好的成形质量。 |
| 英文摘要: |
| The work aims to study the forming characteristics of single-pass straight wall of DP980 dual phase steel under different process parameters. The ER120S-G wire with a diameter of 1.0 mm was used, the Q235 steel plate was selected as the substrate, and the cold metal transition (CMT) additive technology was employed as a base and then the additive experiments on DP980 duplex steel were conducted by Fronius CMT welder. Besides, the reinforcement, melting width, forming heights and forming widths of the cross sections of additive specimens were measured and analyzed. For the single-pass monolayer additive specimen, as the wire feeding speed gradually increased from 2.5 m/min to 8.0 m/min, the melting width and reinforcement both tended to increase, and the variation of melting width was larger. When the welding speed gradually increased from 300 mm/min to 700 mm/min, the melting width and reinforcement of the weld channel showed a decreasing trend. For the multilayer single-pass additive specimen, other parameters were fixed. Under the reciprocating additive path, the wall was formed uniformly and straight, and the sizes at both ends were similar, which were 4.7 cm and 4.6 cm, respectively. When the other parameters were fixed and the wire feeding speed and interlayer temperature increased, the forming width and height of the additive straight wall specimen increased. When the welding speed increased, the forming width and height of the additive straight wall specimen decreased. In the monolayer single-pass additive manufacturing process, the melting width and reinforcement can be effectively controlled by adjusting the parameters of wire feeding speed and welding speed, so as to ensure the forming quality of the additive specimen. Reciprocating additive paths enable more stable forming of single-pass multilayer additive straight wall. The forming width and height of single-pass multilayer additive specimens are mainly affected by the wire feeding speed, welding speed and interlayer temperature. The fabrication of DP980 dual phase steel can be achieved by the CMT additive manufacturing process, with good forming quality. |
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