Welding and Cutting; Instructions for the Care and Use of Oxy-Acetylene Apparatus and Equipment

Welding and Cutting; Instructions for the Care and Use of Oxy-Acetylene Apparatus and Equipment

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1921 edition. Excerpt: ...with the opening opposite the break; the block is weighted down and the welder pro Ohawooterlsflc Detects in Welded Steel Bars as shown by Tensile Tesla. Preheating the casting is advisable in order to prevent excessive expansion and contraction stresses, and the lug and casting should be covered with asbestos paper or other insulating material in order to prevent rapid cooling. Carbonite Shapes.--Carbonite is supplied in blocks or slabs, in various thicknesses from; inch to 1 inch, in width up to 6 inches and lengths of 36 inches. Rods of the same are furnished in diameters of yg inch to 1 inch, inclusive. Carbon otherwise would be impracticable on account of cost of subsequent machining. Replacing Broken Gear Teeth.--Broken gear teeth may be replaced successfully on all kinds of gray iron and steel gears but it is not advisable to attempt the replacement of the teeth of motor car transmission gears except as an emergency repair. These gears are generally made of alloy steel and specially heat-treated to give them toughness and durability, and unless the welded teeth are If the gear has cut teeth and a gear cutter of sufficient capacity is available the preferable practice is to build in the broken teeth and adjacent tooth spaces solid with new metal, and then cut two spaces on the gear cutter. duce a solid well formed tooth. An alternative method less expensive but not so likely to produce a good job is to build in the tooth with carbonite blocks alongside, and finish with the gear cutter. The difliculty is that the cutter is at disadvantage in cutting, having to cut metal on-one side only. Springing and chat This should pro-tering are bound to result making considerable hand finishing', .necessary. Broken Pulleys.--One...show more

Product details

  • Paperback | 28 pages
  • 189 x 246 x 2mm | 68g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236800451
  • 9781236800459