Shot peening is a means of cold working the surface of metal parts by means of hail or blast of round metal shot directed against surface. The impact on the surface will indent the surface metal surface causing the plastic flow and work hardening the surface metal. The hardening of the surface increases its tensile strength and yield point. To learn about shot peening Erie PA should be the place to prioritize.
This technique is very useful in the metal industry. The main benefit is that it prevents fatigue failure is metal by strengthening its surface. Peening is a relatively new technique although it existed is other forms. To understand what happens during the process it is good that one goes back in history. This process is simply a renovation of a very ancient art.
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.
In the modern times the metallurgists used advanced ways to make the surfaces even better. With the current technology has enabled them to measure and determine any increase in the hardness and strength. With this they are able to determine the percentage that can provide optimum results. This made it easy for them to produce standard size metals with quality control that assures reproducibility.
Peening can be achieved using various types of shot. Peening shots may be bought from several companies dealing in these products. One must be careful when buying to ensure that they do not end up with a low quality product. One must ensure it is of definite screened size and well rounded. Its hardness must be equivalent of exceed that of the metal that is peened.
Different types of shots include the steel shot. It is of great use where fatigue strength is of concern. Compared to chilled iron shots, steel shots tend to be more expensive. The main disadvantage of using chilled iron shots is its policy of separation. Peening conditions requires a broken shot to be split-up and removed from the peening shot.
Another type is the cur wire shot which is basically another material used for peening. It is manufactured by clipping off short lengths of steel wire. Peening specifications require that this type of shot be blasted against the scrap steel until it becomes rounded. This process is very time consuming and it decreases the life span of the shot.
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.
This technique is very useful in the metal industry. The main benefit is that it prevents fatigue failure is metal by strengthening its surface. Peening is a relatively new technique although it existed is other forms. To understand what happens during the process it is good that one goes back in history. This process is simply a renovation of a very ancient art.
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.
In the modern times the metallurgists used advanced ways to make the surfaces even better. With the current technology has enabled them to measure and determine any increase in the hardness and strength. With this they are able to determine the percentage that can provide optimum results. This made it easy for them to produce standard size metals with quality control that assures reproducibility.
Peening can be achieved using various types of shot. Peening shots may be bought from several companies dealing in these products. One must be careful when buying to ensure that they do not end up with a low quality product. One must ensure it is of definite screened size and well rounded. Its hardness must be equivalent of exceed that of the metal that is peened.
Different types of shots include the steel shot. It is of great use where fatigue strength is of concern. Compared to chilled iron shots, steel shots tend to be more expensive. The main disadvantage of using chilled iron shots is its policy of separation. Peening conditions requires a broken shot to be split-up and removed from the peening shot.
Another type is the cur wire shot which is basically another material used for peening. It is manufactured by clipping off short lengths of steel wire. Peening specifications require that this type of shot be blasted against the scrap steel until it becomes rounded. This process is very time consuming and it decreases the life span of the shot.
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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