The invention discloses a
potassium-doped
tungsten rod for a high-flexibility
tungsten wire rope and a manufacturing method of the
potassium-doped
tungsten rod, and belongs to the technical field of
powder for
metal additive materials, and the manufacturing method comprises the following steps of (1)
material selection, (2) pre-reduction, (3) vacuum spray
doping, (4) reduction, (5) batch
pickling, (6) mixing, (7) hard film cold isostatic pressing forming, (8) low-temperature
impurity removal, (9) vertical melting pre-
sintering and (10) medium-frequency
sintering. And finally obtaining the
potassium-doped tungsten rod. Compared with the prior art, the method has the advantages that the special high-activity potassium-doped tungsten
powder with the narrow particle size range is adopted for producing the tungsten rod, and the potassium-doped tungsten blank obtains stable and micro-nano-scale initial crystals in the
sintering of vertical melting and
medium frequency combination through regulation and control of the narrow particle size range; the yield reaches 88%-90%, the percent of pass is larger than or equal to 95%, the tensile strength is larger than or equal to 2250 N / mm < 2 >, the high-temperature recrystallization temperature is 1850-2380 DEG C, the 0.39 mm specification high-temperature droop value is smaller than or equal to 1.5 mm, the length-
width ratio is larger than or equal to 15, and the service life is prolonged.