How Heat Produced From Welding Affects Metal
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how heat affects metal when it is being welded (peasecha)
Charles Pease
3-29-16
English 10
How heat produced from welding affects metal The heat produced from the welding process can cause deformation and can also cause changes in the metal at a molecular level. This can make the metal brittle and even deform it. When the arc is struck and the metal starts to become molten it reaches temperatures in an excess of 8,000 degrees fahrenheit and such a large input of heat into the metal begins to move the molecules and when doing so the molecules can rearrange into different patterns and can cause the metal to lose some of its properties. The metal then can become brittle, softer, less ductile and it can also begin …show more content…
If he sets the welder wrong and if the amperage is too high then he can possibly burn through the metal and if the welder is set too low then there will be incomplete penetration and the metal will not bond properly. If the metal is dirty or has oil on it then it can cause the weld to have impurities in it. There are certain types of rods that can be used that can burn out some impurities but it is still better to clean the metal before welding.also if the welder is inexperienced he might make the metal deform by putting too much heat into the metal without properly tacking the metal together before welding it.if the welder puts too little or an excessive amount of filler metal into the weld than this can lead to a bad weld that can cause premature …show more content…
To prevent a bad weld you first need to clean the metal thoroughly with a wire brush and a grinder. After you have cleaned the metal it is time to select a welding rod best suite for the type of metal and the position that the weld is to be made in, then after that it is time to set the welder and depending on the type of metal, the thickness of the electrode and the thickness of the metal. You set your welder according to all these factors. Then after the welder is set and the rod has been chosen and the metal is clean it is time to first tack and the weld the piece. Proper technique and travel speed play a vital role in how well the electrode burns and how much penetration is achieved. There are many different welding techniques and many different types of
how heat affects metal when it is being welded (peasecha)
Charles Pease
3-29-16
English 10
How heat produced from welding affects metal The heat produced from the welding process can cause deformation and can also cause changes in the metal at a molecular level. This can make the metal brittle and even deform it. When the arc is struck and the metal starts to become molten it reaches temperatures in an excess of 8,000 degrees fahrenheit and such a large input of heat into the metal begins to move the molecules and when doing so the molecules can rearrange into different patterns and can cause the metal to lose some of its properties. The metal then can become brittle, softer, less ductile and it can also begin …show more content…
If he sets the welder wrong and if the amperage is too high then he can possibly burn through the metal and if the welder is set too low then there will be incomplete penetration and the metal will not bond properly. If the metal is dirty or has oil on it then it can cause the weld to have impurities in it. There are certain types of rods that can be used that can burn out some impurities but it is still better to clean the metal before welding.also if the welder is inexperienced he might make the metal deform by putting too much heat into the metal without properly tacking the metal together before welding it.if the welder puts too little or an excessive amount of filler metal into the weld than this can lead to a bad weld that can cause premature …show more content…
To prevent a bad weld you first need to clean the metal thoroughly with a wire brush and a grinder. After you have cleaned the metal it is time to select a welding rod best suite for the type of metal and the position that the weld is to be made in, then after that it is time to set the welder and depending on the type of metal, the thickness of the electrode and the thickness of the metal. You set your welder according to all these factors. Then after the welder is set and the rod has been chosen and the metal is clean it is time to first tack and the weld the piece. Proper technique and travel speed play a vital role in how well the electrode burns and how much penetration is achieved. There are many different welding techniques and many different types of