A heat is now taken, using a little sand or welding flux, if the stock is very small. In welding, the first blow is struck on the end of the split piece to drive it down tight and weld it in the center. See [Figure 39]. The sides are next hammered to weld the laps. It is then finished. On heavy work, the heats are taken separately and placed on the anvil by the smith, in the same manner as described for a jump weld. Another form of split welding is shown in [Figure 40]. This method is used in welding heavy iron and steel, such as picks and drills. Notice the little beards cut with a chisel to help hold the pieces in position when heating. Heavy tool steel is also welded with this form of splitting. The first blow struck with the hammer on this weld, is on the end, forcing the pieces together; then on the flat part.
Corner Weld.
In [Figure 41] is shown an angle made by welding on the corner; this is called a corner weld. It is generally made by using square or flat stock. [Figure 42] shows the scarfs prepared for a corner weld, using 1″ by ½″ stock. The piece at “A” is scarfed with the ball of the hammer. The one at B, with the face of the hammer. Separate heats are taken and the pieces lapped and welded.
Fig. 41. Fig. 42.
T-Weld.
The scarfs for T-welds are made in just the same manner as for the corner weld, excepting that one scarf is in the center of the bar. See [Figure 43].
In taking the pieces from the fire to the anvil, the one scarfed in the center is handled with the tongs in the left hand. The one scarfed on the end is handled with the right hand, letting it under the other, and then hammered. Notice how wide the scarf is made on the end piece at “A”. This is done to cover the other scarf. All flat “T” scarfs are made in this manner.
