what is solidworks ? SolidWorks is a popular 3D computer-aided design (CAD) software that is used for creating and designing complex models and assemblies in mechanical engineering, product design, and other industries. It is developed by Dassault Systèmes, a French software company that also owns other popular software such as CATIA and SIMULIA. SolidWorks provides a range of tools and features for creating 3D models, such as sketching, surface modeling, solid modeling, sheet metal design, and assembly modeling. It allows users to simulate and analyze the performance of their designs before manufacturing, including motion analysis, finite element analysis (FEA), and computational fluid dynamics (CFD). It also supports collaboration and sharing of designs with other users through various formats such as STEP, IGES, and STL. SolidWorks is known for its user-friendly interface and intuitive design, which makes it easy for beginners to learn and use. It is widely used in industries such a
Heat Treatment Process Of Steel :
Heat treatment is defined as combination of operations involving heating and cooling of a metal or alloy .
Heat treatment is defined as combination of operations involving heating and cooling of a metal or alloy .
The Purpose of heat treatment :
1. To relieve internal stress that is developing by casting , welding , forging .
2. To increasing ductility and toughness .
3. To improve machinability , corrosion resistance .
4. To changing grain size .
5. To soften metals
6. To improve mechanical properties .
7. To increase wear resistance .
8. To improve trapped gases like parasity .
Process :
In all of heating process some basic step is followed .
1. Heating :
Small grains are combined into large grain .
2. Holding :
All grain is become into uniform shape and size .
3. Cooling :
(A) Rapid cooling Process :
- Large grains are break into small grains .
- Hardness increases .
(B) Slow cooling Process
- Small grains are combined into larger grain .
- Hardness increases .
Types of heat treatment process :
1. Annealing
2. Normalizing
3. Hardening
4. Tempering
Special heat treatment process :
1. Surface hardening :
- Induction Hardening
- Flame Hardening or touch hardening
2. Case hardening :
- Carburizing
- Nitriding
- Cyaniding
- Carbonitriding
Quench or cooling medium :
1. Cold water. : at 16 °
2. Hot water : at 60°
3. Oil Quench. : silicon oil
4. Polymer : Ethelene glycol + ethyl alcohol
5. Low temperature. : liquid nitrogen
6. Salt water. : NaOH + water at 15 °
Rate of cooling :
1. Fast or Rapid cooling
2. Slow Cooling
Annaling :
- Annealing is done to soften the metal
- The process involves heating the metal slowly above the critical temperature (724 °c) .
- Then holding at that temperature for one hour and finally cooling in furnace at above 30°c to 15°c per hour .
Types of Annealing :
1. Full annealing2. Process annealing
3. Spheroidization annealing
4. Diffusion annealing
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