刘长猛
发明人: 刘长猛,韩骁,齐江珉
申请人: 北京理工大学
申请号: 202310503261.4
申请日期: 2023.05.06
摘要: 本发明公开一种基于无支撑电弧增材制造的金属单晶制备方法,包括以下步骤:在增材制造工作台上安装基板;启动焊枪施加低频脉冲电流进行起弧;操控焊枪以预设无支撑弯折或螺旋路径向上移动,同时将加热的丝材送至电弧处;在保护气环境下,丝材在电弧作用下熔化并以弯折或螺旋路径逐层沉积到基板上,实现选晶,得到与预设路径 ...
发明人: 刘长猛,张帆
申请人: 北京理工大学
申请号: 202310444779.5
申请日期: 2023.04.24
摘要: 本发明公开了一种电弧增材制造弧长视觉检测方法、系统及装置,涉及增材制造检测技术领域,该方法包括获取原始电弧图像;对所述原始电弧图像进行预处理,生成边缘信息图像;确定所述边缘信息图像中的第一虚线框内的电弧峰值处的宽度值;当所述电弧峰值处的宽度值大于或者等于设定阈值时,确定所述边缘信息图像处于电弧峰值阶 ...
发明人: 郭跃岭,彭司弋,胡锦龙,韩启飞,闫杨予,刘长猛,娄鹏,周睿宁
申请人: 北京理工大学
申请号: 202310439988.0
申请日期: 2023.04.23
摘要: 本发明涉及一种TIG双丝电弧增材制造铜‑钢双合金的制备方法,属于金属材料增材制造技术领域。所述方法采用TIG双丝增材制造系统和CNC机床进行,步骤如下:将钢基板固定到CNC机床中并预热,采用TIG双丝增材制造系统将焊丝在钢基板上沉积,得到由钢侧和铜侧相连的铜‑钢双合金;所述钢侧由低合金钢焊丝逐层沉积 ...
发明人: 郭跃岭,闫杨予,胡锦龙,韩启飞,彭司弋,刘长猛,娄鹏,周睿宁
申请人: 北京理工大学
申请号: 202310404000.7
申请日期: 2023.04.17
摘要: 本发明提供了一种低气孔率Al‑Cu‑Mg‑Ag耐热铝合金构件的电弧熔丝增材制造方法,涉及耐热合金增材制造技术领域。本发明采用2~10Hz低频率脉冲电弧以及60~140A热丝电流辅助进行增材制造,将丝材表面污染物有效去除,丝材质量提高,气体的逃逸速度大于金属的冷却速度,气体更易溢出,使得气孔的数量大大 ...
作者: 闫杨予1;,胡锦龙2;,韩启飞2;,郭跃岭1;,苏江舟3;,何智3;,王志敏3;,刘长猛1; (1北京理工大学机械与车辆学院;2北京理工大学材料学院;3北京航星机器制造有限公司)
出处: 机械工程学报 2023 第59卷 第11期 P242-252
关键词: 电弧增材制造;Al-Cu-Mg-Ag合金;热处理;显微组织;力学性能
摘要: 电弧增材制造技术可以缩短生产周期,降低成本,实现铝合金的快速成形,但存在结构内部含有较多气孔及晶粒粗大的问题。热丝辅助电弧增材制造(HWAAM)可以有效降低气孔率和细化晶粒,进一步提高电弧增材制造Al-Cu-Mg-Ag合金的性能。采用热丝电弧增材制造技术制备了Al-Cu-Mg-Ag耐热铝合金,利用拉 ...
作者: Hao Mao;Chenchen Jing;Fuxiang Kong;Tianqiu Xu;Xiong Xiao;Kun Li;Xue Ling;Changmeng Liu (1School of Engineering and Technology, China University of Geosciences, Beijing 100083, China;2Key Laboratory on Deep Geo-Drilling Technology of the Ministry of Land and Resources, China University of Geosciences, Beijing 100083, China;3School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China)
出处: Journal of Manufacturing Processes 2023 Vol.89 P430-443
关键词: Hot-wire pulse arc additive manufacturing;Austenitic stainless-steel bar;Manufacturing efficiency;Microstructural;Mechanical properties
摘要: With the advantages of high material utilization and freedom of structural form, wire and arc additive manufacturing (WAAM) is a feasible solution to ...
作者: Fu,Rui1;Duan,Shenyu1;Ma,Yunlong13;Luo,Junrong1;Liu,Changmeng2;Lei,Hongshuai1;Chen,Haosen1; (1Beijing Key Laboratory of Lightweight Multi-functional Composite Materials and Structures, Beijing Institute of Technology, Beijing, 100081, China;2School of Mechanical Engineering, Beijing Institute of Technology, Beijing, 100081, China;3Beijing Institute of Astro Nautical Systems Engineering, Beijing, 100076, China)
出处: Journal of Alloys and Compounds 2023 Vol.952
摘要: The nanoparticle-enhanced aluminum alloys fabricated by arc-directed energy deposition (Arc-DED) have gained much attention due to their improved micr ...
作者: Fu, Rui1;Liang, Yaojian1;Han, Qifei1;Guo, Yueling1;Lei, Hongshuai1;Liu, Changmeng1 (1Beijing Institute of Technology; Beijing Institute of Technology; Beijing Institute of Technology)
出处: MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 2023 Vol.881
关键词: ALUMINUM-ALLOYS; MICROSTRUCTURE; PRECIPITATION; EVOLUTION; PROPERTY; BEHAVIOR; GROWTH
摘要: Here, the strengthening and fracturing mechanisms of Al-7075 alloy fabricated by laser-directed energy deposition (L-DED) in the as-printed and heat-t ...
作者:
Qifei Han1;Yueling Guo2;
出处: Journal of Magnesium and Alloys 2023
关键词: Wire-arc directed energy deposition;Mg-Al-Si alloys;Microstructure;High temperature stength;Sub-rapid solidification
摘要: Here we propose to employ wire-arc directed energy deposition (WA-DED) to tune the microstructure and the mechanical property of Mg-Al-Si alloys, on t ...
作者: Rui Fu;Yueling Guo;Yinan Cui;Jiachen Wang;... Changmeng Liu ([a]Beijing Key Laboratory of Lightweight Multi-functional Composite Materials and Structures, Beijing Institute of Technology, Beijing, 100081, ChinaBeijing Key Laboratory of Lightweight Multi-functional Composite Materials and Structures, Beijing Institute of Technology, Beijing, 100081, China[b]School of Mechanical Engineering, Beijing Institute of Technology, Beijing, 100081, ChinaSchool of Mechanical Engineering, Beijing Institute of Technology, Beijing, 100081, China[c]Applied Mechanics Lab, School of Aerospace Engineering, Tsinghua University, Beijing, 100084, ChinaApplied Mechanics Lab, School of Aerospace Engineering, Tsinghua University, Beijing, 100084, China)
出处: Materials Science and Engineering: A 2023 Vol.864 No.0
摘要: Wire arc additive manufacturing (WAAM) is a potential technology gradually applied in the aerospace, automobile, and military fields due to its advant ...