Stirring head for friction stir welding and preparation method of stirring head for friction stir welding

• Main Authors: XU LI, XING JIANJUN, WANG BINBIN, MA NING, LI BINGWEN
• Format: Patent
• Language: Chinese; English
• Published: 05.06.2018
• Subjects: CLADDING OR PLATING BY SOLDERING OR WELDING; COMBINED OPERATIONS; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS; GRINDING; MACHINE TOOLS; MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; METAL-WORKING NOT OTHERWISE PROVIDED FOR; OTHER WORKING OF METAL; PERFORMING OPERATIONS; POLISHING; SOLDERING OR UNSOLDERING; TRANSPORTING; UNIVERSAL MACHINE TOOLS; WELDING; WORKING BY LASER BEAM; WORKING CEMENT, CLAY, OR STONE; WORKING STONE OR STONE-LIKE MATERIALS

The invention provides a stirring head for friction stir welding. The stirring head comprises a clamping handle, a hard alloy shaft shoulder and a glomerocryst cubic boron nitride stirring needle. Theglomerocryst cubic boron nitride stirring needle is welded to the hard alloy shaft shoulder and made by cutting of a glomerocryst cubic boron nitride synthetic block. The stirring head for friction stir welding is great in heat resistance and long in service life. The invention further provides a preparation method of the stirring head for friction stir welding. The preparation method includes steps of glomerocryst cubic boron nitride stirring needle blank preparation, welding and grinding forming. The method is simple in process and easy for industrial production. 本发明提供了种搅拌摩擦焊用搅拌头，它包括夹持柄、硬质合金轴肩和焊接在所述硬质合金轴肩上的聚晶立方氮化硼搅拌针；所述聚晶立方氮化硼搅拌针由聚晶立方氮化硼合成块切割制得。该搅拌摩擦焊用搅拌头耐热性能好、使用寿命长。本发明还提供种制备所述搅拌摩擦焊用搅拌头的方法，具体包括制备聚晶立方氮化硼搅拌针坯体、焊接和磨削成型的步骤。该步骤工艺简单、易于工业化生产。