| Oxy Acetylene Welding and Cutting Materials | | | | burn away with great rapidity, resulting in a narrow |
| Oxy-acetylene welding is an autogenous welding | | | | slot through the section cut. The action is so fast |
| process, in which two parts of the same or different | | | | that metal is not injured on either side of the cut. |
| metals are joined by causing the edges to melt and | | | | Carbon Removal Process |
| unite while molten without the aid of hammering or | | | | This process depends on the fact that carbon will |
| compression. When cool, the parts will form one | | | | burn and almost completely vanish if the action is |
| whole piece of metal. | | | | assisted with a supply of pure oxygen gas. After the |
| The oxy-acetylene flame is made by mixing oxygen | | | | combustion is started with any convenient flame, it |
| and acetylene gases in a special welding torch or | | | | continues as long as carbon remains in the path of |
| blowpipe, producing, when burned, a heat of 6,300 | | | | the jet of oxygen. |
| degrees, which is more than twice the melting | | | | Materials |
| temperature of the most common metals. This | | | | For the performance of the above operations we |
| flame, while being of intense heat, is of very small | | | | require the two gases, oxygen and acetylene, to |
| size. | | | | produce the flames; rods of metal which may be |
| Oxy Acetylene Cutting | | | | added to the joints while molten in order to give the |
| The process of cutting metals with the | | | | weld sufficient strength and proper form, and various |
| oxy-acetylene flame produced from oxygen and | | | | chemical powders, called fluxes, which assist in the |
| acetylene depends on the fact that a jet of oxygen | | | | flow of metal and in doing away with many of the |
| directed upon hot metal causes the metal itself to | | | | impurities and other objectionable features. |