This video is about titanium bolts head forming / forging.
Now most titanium bolts heads including the botton head,cap head,hex flange head and the 12 point flange head are forged to a roughcast at first.It has many advantages.
- Saving material cost and machining cost. Usually the bolts head diameter is much bigger than the thread and shaft diameter,if totally turn it from titanium blanks,its material cost and machining time will be much longer.So use smaller diameter titanium rods to punch the head to a roughcast and then CNC turn it.We can think we will reduce material cost and machining time.
- The titanium bolt forging can increase Head Strength.
- Resolve problem of some head sizes can’t be make out by cold punching.Especially for the torx socket titanium bolts,they can’t be cold punched out.So the head forging can forge the torx socket out at the same time. Also the same as the 12 point titanium bolts and nuts,they are all head forged out at the same time.
And some shortcoming as below
- The Grade 5 titanium bolts have to be forged out by heating.If not,the head will generate cracks.So if heating,the part will be oxided and there will be an ugly tough oxide layer on the finish.to remove it,we have to remove it by acid washing.
- The finish of the torx socket or the 12 point bolts or nuts will be not bright like the normal hex socket or hex flange ones.But they are will be still beautiful.