Aviation Part Sub-assembly

Objective

Characteristics

1) Characteristics of Main Assembly Materials

• Bushing
  It is the sliding bearing (usually stipulated as journal bearing) with the faces mutually contacted making the frictional resistance bigger when the axis spins but since it sustains bigger loads in general it is in wide use for the coupling structure part which receives much of aircraft’s mechanical shocks
• Rivet
  Embedding the heated rivets on the holes of the stacked steel sheets and repeated striking with machine or hammer after holding onto the head parts of the rivet and fastening by the deformation. Generally made of mild steel but for special use it is made of alloy steel or light steel, and the types are; button-head rivet, counter-sunk head rivet, bevel head rivet, oval button-head rivet, pan head rivet, thin bevel head rivet and etc. The length should be 1.3~1.6 times of the diameter longer than the thickness of the plates to fasten depending on the thickness, and the rivet holes shall be around 1 mm larger than the diameter of the rivet. When embedding the smaller rivets, it must be done in the constant temperature not being heated.
  The jointed parts using rivets are called the riveted joints and these are; lap joint, rabbet joint, chain type rivet joint, zigzag riveted joint, full face rivet joint, and etc. Rivet joint is easy to maneuver and since the strength of the coupling is strong it is widely in use at the construction, boiler, bridge, ship, gas tank, and pedestrian bridge and etc. When gas tightness is required in the rivet joint works, caulking is accompanied and for perfect caulking, sometimes fullering is carried out as well.

Status of Process Approval

• BAC5000 / BAC5435 / BAC5004  etc.

Status of Production Facilities

• PRESS (Hand 3T, Hydraulic Pressure)
• Drill Machine NAMBUK (NBTG-540)
• Radial Drill Machine (BR1.5)
• DIMPLE Riveter