Uniform formed polycrystalline diamond wire drawing die blank and manufacturing method thereof

The invention relates to a superhard material manufacturing technology, in particular to a uniform formed polycrystalline diamond wire drawing die blank and a manufacturing method thereof. The manufacturing method includes the steps of performing preforming on the diamond micropowder, depositing a layer of metal binder film on the surface of the preform, and then performing high-temperature high-pressure sintering to prepare the polycrystalline diamond wire drawing die blank. The manufacturing method is simple, quick and convenient, and metal particle infiltration is utilized, so that the uniform formed polycrystalline diamond wire drawing die blank without metal agglomeration inside is manufactured in a high-temperature high-pressure environment. 本发明涉及超硬材料制造技术，特别涉及一种组织均匀的聚晶金刚石拉丝模坯及其制备方法。先将金刚石微粉进行预成型，之后在预成型体表面沉积一层金属粘结剂薄膜，之后进行高温高压烧结制备聚晶金刚石拉丝模坯。本发明聚晶金刚石拉丝模坯的制备方法简单便捷，巧妙的利用金属颗粒熔渗，从而在高温高压环境下制备出内部无金属团聚的组织均匀的聚晶金刚石拉丝模坯。