I 1 i T f 1 i 1 i i 1 i 1 i i i

THE FORGE FIRE

After cleaning the fire bowl, dump the ashpit below the tuyere and then try the blower and make sure a good strong blast comes through. Sometimes ashes work back into the blower pipe and obstruct the blast.

Fig. 2-19.—The forge fire should be cleaned by pushing tho shovel along the bottom of the hearth to the center of the fire, ft» at A, and then lifting it straight up, as at B. The clinker and ashes, if any, will be exposed and can be easily removed.

Next light a small handful of shavings or kindling from the bottom and drop onto the tuyere. Give the blower a gentle turn and rake fuel, preferably coke left from the previous fire, onto the burning kindling. Once tho fire is burning well, rake more coke onto it, and bank the fire on both sides and on the back with dampened coal. This forms a mound with burning coke at the center, and the heat is concentrated in the center by the dampened coal on the outside. In a little while this dampened coal, sometimes called green coal, has gases driven off and it changes to coke.

286. Maintaining the Fire.—When the coke at the center of the fire burns up, additional coke from the hearth or the underside of the mound is forced into the center, and from time to time green coal is added to the outer parts of the mound to keep the fire well banked. Do not continually poke at the fire; simply keep the center well supplied with coke and the outside packed down with dampened coal.

If the fire tends to spread too much or becomes open and loose, throw or sprinkle water on the edges and pack it down with the shovel. Only a gentle blast of air should be used. Excessive air makes an oxidizing fire and causes the iron to scale badly.

287. Cleaning the Fire.—From time to time—usually every half hour when welding—the clinkers and cinders that accumulate over the tuyere should be removed. This can be done by passing the shovel along the bottom of the hearth to the center of the fire and then raising it straight, up through the fire. The clinkers can then be easily seen and removed. Most of them will stay on the shoveL The burning coke is then raked back into the center and the outside packed down, using green coal on the outer edges if needed.

288. Heating the Irons.—To heat irons in a forge, they should be placed in the fire in a horizontal position, not pointing down. There

Fig. 250.—In heating irons in the forpe, they should be placed level—never pointed down. There should be burning coke below them, on top of them, and on all sides of them.

should be burning coke below the irons, on both sides of them, and on top oj them. Irons heated in a deep, compact fire heat much more rapidly and oxidize or scale off less than when heated in a shallow, burned-out fire. Some scale will form in spite of a good fire, but it should be kept to a

Fig. 250.—In heating irons in the forpe, they should be placed level—never pointed down. There should be burning coke below them, on top of them, and on all sides of them.

Woodworking Tools and Installation Tips

Woodworking Tools and Installation Tips

There are a lot of things that either needs to be repaired, or put together when youre a homeowner. If youre a new homeowner, and have just gotten out of apartment style living, you might want to take this list with you to the hardware store. From remolding jobs to putting together furniture you can use these 5 power tools to get your stuff together. Dont forget too that youll need a few extra tools for other jobs around the house.

Get My Free Ebook


Post a comment