The present invention is a friction stir welding machine adapted to perform solid phase welding on a welding portion of materials to be welded, by pressing a welding tool (4) against the welding portion of the materials to be welded while rotating the welding tool (4), and forcing the welding tool (4) to be advanced into a softened portion which is softened by a frictional heat while stirring the softened portion, wherein a coating (50) made of aluminum nitride is formed on at least a region of the welding tool (4) to be in contact with the materials to be welded.

本发明涉及一种基于搅拌摩擦焊的磁性粉末材料的增材制造方法，包括以下步骤：(1)将磁性粉末材料置于上端开口的固定容器中，并在固定容器上放置有可沿其上表面移动的带有通孔的上端盖；(2)穿过所述上端盖放置有深入磁性粉末材料内部的焊接用搅拌头，启动搅拌头沿设定方向移动进行焊接，并带动上端盖随搅拌头同步移动，即实现磁性粉末材料的增材制造。与现有技术相比，本发明首次实现了磁性材质和粉末形式材料相结合的增材制造方法。

A method of depositing an extrudate onto a substrate, the method including steps of rotating a stirring tool about an axis of rotation while urging a tool distal end of the stirring tool against the substrate, and wherein the stirring tool defines a bore, extending therethrough; positioning a die adjacent to the stirring tool, such that the stirring tool rotates relative to the die; and passing feedstock through the bore toward the tool distal end.

本发明公开了一种通过消耗型搅拌摩擦工具增材制造的方法，其特征在于：以消耗型材料作为搅拌摩擦工具，采用搅拌摩擦堆焊的方法，使消耗型搅拌摩擦工具的材料在基体表面逐层固相堆积，从而制备出所需金属材料。本发明的方法具有成本低廉、成型速度快、制备用时短等优点。

提供了一种用于制造物品的增材搅拌摩擦沉积方法。该方法包括通过增材搅拌摩擦沉积将耐磨材料沉积在预成型件的表面上以提供中间物品。预成型件包含第一复合材料，并且耐磨材料包含第二复合材料。第二复合材料与第一复合材料实质上不同。该方法还包括加工中间物品以从中间物品去除耐磨材料的至少一部分。

An additive friction stir fabrication method and system is described which may be used to fabricate and join a rib to a metallic substrate or to repair a defect in a metallic substrate through extrusion. The method may be carried out with or without the addition of preformed ribs. One such method involves feeding a friction-stir tool with a consumable filler material such that interaction of the friction-stir tool with the substrate generates plastic deformation at an interface between the friction-stir tool and a metallic substrate to bond the plasticized filler and substrate together and extrude this material through a forming cavity to form a rib joined to the metallic substrate. Further described is a system for fabricating a rib joined to a metallic substrate through extrusion.

A method and apparatus for joining workpieces is described. The apparatus comprises a clamp configured to restrain a first workpiece against a second workpiece and an additive friction stir deposition (AFSD) machine comprising a spindle. The first workpiece is clamped to the second workpiece, and feedstock material is deposited, via rotation of the spindle, into an aperture extending through one or both of the first workpiece and the second workpiece. The deposited feedstock material forms a weld nugget that joins the first workpiece to the second workpiece.

Disclosed is a friction welding machine, including a machine bed, a main shaft system, a power system, a movable sliding table mechanism, and an upsetting oil cylinder; specially, the main shaft system is fixedly arranged on the machine bed and is used for mounting a main shaft workpiece; the power system is fixedly arranged on the machine bed and in transmission connection with a main shaft of the main shaft system, the movable sliding table mechanism includes a tailstock assembly used for mounting a tailstock workpiece, an axle center adjusting device is fixedl arranged on the movable sliding table mechanism and can drive the tailstock assembly to move and lock the position of the tailstock assembly; the upsetting oil cylinder is fixedly arranged on the machine bed and can drive the movable sliding table mechanism to be close to or far away from the main

一个目的是提供一种元件、一种摩擦元件焊接方法以及一种用于制造摩擦元件焊接接头的方法。 本发明是一种元件,用于通过在元件旋转时将元件压入片材堆中来在两个或更多个堆叠的金属板材的片材堆上执行摩擦元件焊接。 该元件包括: 进入板堆的圆柱形心轴; 设置在心轴上端部的圆环; 从心轴的下端面延伸出第一锥体; 第二锥体设置于第一锥体的下侧。 第二锥体的垂直角β与第一锥体的垂直角α满足β<α的关系。

本发明涉及焊接技术领域，提供了一种异质金属搅拌摩擦焊接过程热源模型建立方法及系统，包括：获取异质金属分别进行搅拌摩擦焊接过程中的搅拌头扭矩，计算得到各金属产热能力的占比；获取异质金属搅拌摩擦焊接过程中的搅拌头扭矩，并与搅拌头转速相乘，得到总焊接热输入；将各金属产热能力的占比分别与总焊接热输入，得到各金属侧分配的热量；基于各金属侧分配的热量，假定各金属侧热流密度均与半径成正比，建立异质金属搅拌摩擦焊接过程热源模型。不涉及与搅拌头‑工件界面接触状态相关的下压力、热效率等参数，无需采用试错法来得到合理的温度场分布和热循环曲线的结果，大幅节省了人力、物力和财力。