Bucking bar：What’s Bucking Bar?
Bucking bar is a work tool received behind work surfaces to provide a backing member in applying impact fasteners and including intermitted tools’ head and handle parts with a low-recoil impact-absorbing spacer provided there between to take shock loads in compression and shear.
Bucking bars are tools used to form buck-tails (the head formed during riveting operations) on rivets. They are in many different shapes and sizes, as shown in the following picture.
What’s more, specific rivet installations and specially designed bucking bars are manufactured locally. These bars are normally made from tool steel. The portion of the bar designed to come in contact with the rivet has a polished finish. This helps to prevent marring of formed buck-tails. Bucking-bar faces must be kept smooth and perfectly flat and the edges and corners rounded. A satisfactory rivet installation depends largely on the condition of the bucking bar and your ability to use it. If possible, hold the bucking bar in such a manner that will allow the longest portion of the bar to be in line with the rivet. You should hold the bucking bar lightly but firmly against the end of the rivet shank so as not to unseat the rivet head. The inertia of this tool provides the force that bucks (upsets) the rivet and forms a flat, head like buck-tails.
COLLETED BY HANNS FROM www.buckingbar.com.cn
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