FIELD: process engineering.
SUBSTANCE: invention relates to metallurgy and may be used at making rods with heads from titanium alloys. Billets are subjected to thermal treatment to perform hot heading. After heading thread is cut and head fillet is hardened. Thread is cut in two steps. First, preliminary incomplete knurling is performed after tempering of billets with deformation. Said deformation is defined by percentage between formed tooth thread depth to required depth to make 85-98%. Then workpiece is age-hardened to perform final thread cutting.
EFFECT: high strength bolts from titanium alloys with flaw-free thread, lower production costs.
3 cl, 1 tbl, 6 ex
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