(b)
Blow air through the tube to remove all swarf and other foreign material.
Deburring Tool Operation
Figure 206/TASK 20-23-38-991-051
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Table and Operation of Deburring Tool
Figure 207/TASK 20-23-38-991-005
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Squaring, Deburring and Champfering of the Tube End
Figure 208/TASK 20-23-38-991-018
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Subtask 20-23-38-941-054
B. Preparation of the Swage Tools
NOTE : You can use the manual or the automatic power equipment when you
____ swage. Make sure that each pressure gage used in this procedure is calibrated. If necessary, use a master gage to calibrate the pressure gage. Mark the date of calibration on the gage.
NOTE : Replace the tool components as soon as they show signs of wear.
____
(1) Determine the components of the internal tools to swage the tubes on the sleeve and the union:
-use the applicable drawbar, expander, split back-up washers, tapered back-up ring and thrust bush. (Ref. Fig. 209/TASK 20-23-38-991-019)
NOTE : For corrosion-resistant steel tube which are dia. 1/2" ,3/8"
____ and 3/4", two types of tools are available. (Ref. Fig. 210/TASK 20-23-38-991-020)
(2) Install the internal tool components on the draw bar and obey these precautions: (Ref. Fig. 209/TASK 20-23-38-991-019)
(a)
Solid-type back-up washers You must use the solid-type back-up washers so that they agree with the I.D. of the tube. Use a 57.2.19 gage to do this. Do not use the washers with an O.D. immediately smaller than the
I.D. of the tube. If you do, it will be difficult to remove the
tube after the swaging operation.
You must keep a clearance of 0.10 mm (0.0039 in.) to 0.15 mm
(0.0059 in.) between the washers and the tube.
The inner chamfers must point away from the 57.2.15 expander.
(b)
Split-type back-up washers 57.2.32.
You must replace these washers when:
-the increase in diameter during each swaging operation becomes permanent
-it is difficult to install or remove the washers from the tube.
(c)
Expander You must replace the expander as soon as it is difficult to install or remove the tube.
Internal Swage Tool
Figure 209/TASK 20-23-38-991-019
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Components of Internal Swage Tools for Corrosion-Resistant Steel Tubes
Figure 210/TASK 20-23-38-991-020
(d)
Tapered back-up ring The cone of the tapered back-up ring 57.2.33 must always point to the expander 57.2.31.
(e)
Thrust bush 57.2.17 The shoulder of the thrust bush 57.2.17 must point to the drawbar to go into the end of the tube.
(3) Determine the external tool components below, applicable to hold the tube and fitting during the swaging: (Ref. Fig. 211/TASK 20-23-38-991-022)
-two jaws and one die (the jaws and the die must match the OD of the
tube and the fitting (sleeve or union), - one die bolster, - one attach nut, - one 57.2.10 adapter (to attach the drawbar to the swage machine).
NOTE : Make sure that you can adapt the tool components on the swage
____
machine (manual or automatic).
(4) Connect the hose between the pump and the swager of the swage machine.
NOTE : You can put the swager in the horizontal or vertical position
____
as necessary.
(5)
Install the drawbar assembly on the die and on the adapter. Tighten the drawbar on the adapter.
(6)
Install the drawbar assembly and the die on the swager. Tighten the drawbar with your hand.
(7)
Install the attach nut of the die.
(8)
Apply a layer of COMMON GREASE (Material No. 04-012) on the expander.
Subtask 20-23-38-350-050
C. Deburr the tube.
(1)
The internal diameter
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