Manufacturing process of carbon arrow shaft
For the most carbon arrow shafts for sale in the market, Whatever you get them from your distributors or pro shops..,Are You curious at “how carbon arrow shaft are manufactured” ? Perhabs you get some information from the big arrow company,like Carbon Express or Easton or other companys that they revealed a little information on their arrows shaft production process..But until now,i not find any very actual/detailed information of how the carbon shaft are made from carbon fiber.So i write this article since i have beening working in the arrow shaft manufacturing factory more than 3 years.
Currently, the carbon fiber market is monopolized by Japan,USA,KOERA,GERMANY, Far as i know,most of quality arrow use Mitsubishi, Toray,Or American brand fiber ,,Some budget arrow made of Chinese domestic carbon fiber (Include Taiwan carbon fiber ) . To some extents, the arrow quality is most decided by the material —-”Carbon Fiber Prepreg” . We Use Mitsusbishi carbon fiber.
Mitsubishi ,Toray carbon fiber shaft spine tolerance ,weight tolerance,straightness tolerance , and strength, durablity will be better than other fiber, As i not used the USA or Koera fiber , So i dnot have a judgement. It will also save the time in manufacturing arrow shafts with good carbon fiber.A qualified arrow with tuned bow is not dangerous , Also archery is a good sport ! So dnot let the fear of archery to stop you to love this game. !
Here are detailed 11 steps of Building a carbon shaft :
1, Choosing the corresponding fiber type according to the arrow sepecfication(Like ID of shaft, spine,weight,strength),Precisely Cutting the fiber mat to the small carbon fiber sheet..Now we use the Auto cutting machine to get precise size small sheet.
2,We get the appropriate small fiber sheet,The technican will configurate/lay the small sheets in 0 or 90 degree (surely maybe some other degree for special shafts) .
3, The sheets need be rolled over the iron core（mandrel）by handwork and Auto machine （i think it can be called mandrel）.
4, Twinng the applying tape around the rolled fiber mandrel to enable a clean form to be fabricated .
5, Thermal treatment , Send the rolled mandrel to the industrial drying oven to harden the carbon fiber inside structure and resin .
6,After thermal treatment, We need separate the applying tape from the rolled fiber shaft and clean the surface.
7,Ok,Then we get raw shaft now, Using the abrasive cutting off machine to cut shafts into 32” or other length.
8,Grinding the carbon shaft by the centreless grinding machine to get the shaft smooth surface and right spine and weight. Surely you need seasoned worker to adjust the machine and operate….
9,After all the above steps,,The shafts almost finished,,,Now we need measure the spine,straightness,weight tolerance,strength..Then classify different groups of shafts,Straightness 0.001”,0.003”,0.006”..Weight tolerance +/-1 or 2 grs, Spine tolerance +/-15 or +/-10..
10,Print the logo on the shaft,,Using silk screen print, Heat transfer, or water marking printing. And matt, gloosy finshed is available under requirement
11, Then assemble the insert,nocks and fletched the vanes…After all finished,,The QC will check again,, Then send to our customers..For the new sample shafts,We will test it before by shooting machine then send to our club archer,, If they say ok,,We will contine produing the shafts again .
Surely there are many small process/steps in manufacturing i not list. Above all based on my own experience and knowledge,If you learn some different methods to make carbon arrow shaft,Please share with me. Thanks
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