Cold working a surface takes many forms including shot peening. This is done by hailing or blasting of round metallic shots directed towards the surface. The caused impact on the surface usually indent it causing it to work harden and plastic flow. The tensile strength of the surface increases upon becoming hard. This is what prevents fatigue failure and increases durability of a metal surface. For more on shot peening Erie PA presents a preferable location to check out.
Peening is extremely beneficial to the metal. The fact that the metal is upset and placed under compression it enables the surface to be able to obviate fatigue failures. This process is fairly a recent renovation of every ancient art and in order to have a clear conception of what occurs during this process is to go back to history.
The earliest features of cold working included hammering which was referred to as hammer hardening. It was used in ancient Greek to harden arrow and spear heads. The arrow and spear heads used to be strong such that they could pierce an animal without any troubles. They also used this procedure to create body armors which they used during times of war. It is believed that they has strong body armor which had the ability to bend spears and arrows from the enemy.
Today metallurgists are using sophisticated methods to improve the surfaces even more. Technology has made it possible for them to calculate and establish an increase in the strength and hardness. This has made it able for them to establish a percentage that can give the best results. They are now able to produce metals that are of standard size with quality control but still assures good reproduction.
There are various types of shot used for peening. The peening shots can be purchased from any company that deals with metals but one has to be careful not to buy one that is of bad quality. The shot has to be well rounded and then screened to a certain definite size range. The shot hardness must be equal to or more than the hardness of metal that is being peened.
When one is purchasing a shot there are several consideration factors. There are many types of shots including steel shot. It is quite efficient when skyrocketing fatigue strength. Comparatively chilled iron shots are cheaper than steel shots. The separation problem is the major disadvantage with chilled iron shots. This is in consideration of the fact that broken shots must be eliminated and separated from peening shot as per peening specifications.
Another peening material is the cur wire shot. This material is made by cutting off short lengths of steel wire. Peening conditions need this variety of shot to be shot against scrap steel while waiting for it to round out. This procedure not only reduces the life of the shot but it also consumes a lot of time.
As earlier discussed in this article peening is applied to mainly prolong the fatigue life of cycle stressed parts. Besides this, it has several other applications various fields which include elimination of fret corrosion and preventing stress corrosion cracking. The technique is sometimes employed in straightening of parts.
Peening is extremely beneficial to the metal. The fact that the metal is upset and placed under compression it enables the surface to be able to obviate fatigue failures. This process is fairly a recent renovation of every ancient art and in order to have a clear conception of what occurs during this process is to go back to history.
The earliest features of cold working included hammering which was referred to as hammer hardening. It was used in ancient Greek to harden arrow and spear heads. The arrow and spear heads used to be strong such that they could pierce an animal without any troubles. They also used this procedure to create body armors which they used during times of war. It is believed that they has strong body armor which had the ability to bend spears and arrows from the enemy.
Today metallurgists are using sophisticated methods to improve the surfaces even more. Technology has made it possible for them to calculate and establish an increase in the strength and hardness. This has made it able for them to establish a percentage that can give the best results. They are now able to produce metals that are of standard size with quality control but still assures good reproduction.
There are various types of shot used for peening. The peening shots can be purchased from any company that deals with metals but one has to be careful not to buy one that is of bad quality. The shot has to be well rounded and then screened to a certain definite size range. The shot hardness must be equal to or more than the hardness of metal that is being peened.
When one is purchasing a shot there are several consideration factors. There are many types of shots including steel shot. It is quite efficient when skyrocketing fatigue strength. Comparatively chilled iron shots are cheaper than steel shots. The separation problem is the major disadvantage with chilled iron shots. This is in consideration of the fact that broken shots must be eliminated and separated from peening shot as per peening specifications.
Another peening material is the cur wire shot. This material is made by cutting off short lengths of steel wire. Peening conditions need this variety of shot to be shot against scrap steel while waiting for it to round out. This procedure not only reduces the life of the shot but it also consumes a lot of time.
As earlier discussed in this article peening is applied to mainly prolong the fatigue life of cycle stressed parts. Besides this, it has several other applications various fields which include elimination of fret corrosion and preventing stress corrosion cracking. The technique is sometimes employed in straightening of parts.
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