0
Want this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
What is the purpose of tempering a quench hardened plain carbon steel?
Tempering is done to reduce the hardness and brittleness of the steel that results from the quench hardening process. It helps to improve the steel's toughness, ductility, and overall machinability, making it more suitable for various applications. Tempering also helps to relieve internal stresses and reduce the risk of cracking or failure.
What can you conclude from the hardness brinell values?
Hardness Brinell values provide information on the hardness of a material based on the indentation it makes when a predetermined force is applied. Higher Brinell values indicate a harder material, while lower values indicate a softer material. It is a useful metric for comparing the relative hardness of different materials.
Why the tempering temperature for class 12.9 is 380 oC?
The tempering temperature for class 12.9 fasteners (such as bolts and screws) is 380°C to achieve the desired combination of hardness and toughness in the material. This specific temperature helps to refine and balance the microstructure of the steel, improving its mechanical properties and performance under load. Deviating from this recommended tempering temperature can lead to suboptimal properties in the fasteners.
What are the heat treatment processes involed in making a hammer?
To make a hammer, the main heat treatment processes involved are heat treating for hardening and tempering. The hammer head is heated to a specific temperature for hardening, then quenched in a cooling medium to achieve the desired hardness. Tempering is then done by reheating the hardened hammer head to a lower temperature to improve toughness and reduce brittleness.
Why is hardness a valuable property of some minerals?
Hardness is valuable because it helps in mineral identification by determining resistance to scratching. Minerals with higher hardness values can scratch minerals with lower hardness values, aiding in their classification. Hardness also indicates the strength and durability of a mineral, making it useful for industrial and practical applications.
What is the hardness level for en19 material?
approx. 50 HRC after hardening and tempering
Why is tempering applied on quenched steels?
to reduce hardness to prevent the material from becoming brittle
What is the purpose of tempering a quench hardened plain carbon steel?
Tempering is done to reduce the hardness and brittleness of the steel that results from the quench hardening process. It helps to improve the steel's toughness, ductility, and overall machinability, making it more suitable for various applications. Tempering also helps to relieve internal stresses and reduce the risk of cracking or failure.
What is the relationship between hardness and ductility?
when ductility increase hardness decrease
Why Strength and hardness of material are decreased by annealing?
because it removes the tempering(hardness) of the object, generally on the surface, and makes it easier to work the metal without ruining your tools or "work" hardening the surface.
What can you conclude from the hardness brinell values?
Hardness Brinell values provide information on the hardness of a material based on the indentation it makes when a predetermined force is applied. Higher Brinell values indicate a harder material, while lower values indicate a softer material. It is a useful metric for comparing the relative hardness of different materials.
What heat treating process makes martensite less brittle?
Tempering. Removes carbon atoms, making the material softer and more ductile at the expense of hardness.
Why the tempering temperature for class 12.9 is 380 oC?
The tempering temperature for class 12.9 fasteners (such as bolts and screws) is 380°C to achieve the desired combination of hardness and toughness in the material. This specific temperature helps to refine and balance the microstructure of the steel, improving its mechanical properties and performance under load. Deviating from this recommended tempering temperature can lead to suboptimal properties in the fasteners.
When was The Tempering created?
The Tempering was created in 1983.
How many pages does The Tempering have?
The Tempering has 198 pages.
What is the ISBN of The Tempering?
The ISBN of The Tempering is 0-8991-9152-5.
What is a term referring to the melting and cooling of chocolate to make candies?
Tempering
