. Sheet metal workers' manual; a complete, practical instruction book on the sheet metal industry, machinery and tools, and related subjects, including the oxy-acetylen welding and cutting process . Figure 263.—Location of Joint When Welding Convex End to Steel Cylinder. Figure 263 shows a section of one side of a steel cylin-der and a convex head which is to be welded on. Theweld should be made in the straight portion of the cylin-der as shown, and not directly at the bend. Figure 264 shows the method of accomplishing thesame result in the case of a concave end. If the parts arebeveled as sho
. Sheet metal workers' manual; a complete, practical instruction book on the sheet metal industry, machinery and tools, and related subjects, including the oxy-acetylen welding and cutting process . Figure 263.—Location of Joint When Welding Convex End to Steel Cylinder. Figure 263 shows a section of one side of a steel cylin-der and a convex head which is to be welded on. Theweld should be made in the straight portion of the cylin-der as shown, and not directly at the bend. Figure 264 shows the method of accomplishing thesame result in the case of a concave end. If the parts arebeveled as shown, the joint will be a strong one. When butt-welding two lengths of plate, or when weld-ing the longitudinal seam of a cylinder, it is advisable totack along the line of weld before commencing on thefinished weld. This will prevent the overlapping of the 330 SHEET METAL WORKERS MANUAL sheets at the end farthest away from the point of weld-ing. When starting to weld two lengths of sheet at oneend, which have previously been placed in proper align-. Figure 264.—Welding Concave Head in Steel Cylinder. Note that BothHead and Shell Are Beveled. ment, it will be found that they tend to spread apart, asshown in Figure 265. As the welding progresses, thisspreading movement of the sheets ceases, and later theycome together again, with a tendency to overlap.
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