What Mechanical Engineers Do

 What Mechanical Engineers Do

Mechanical engineers research, design, build, configure and test mechanical and thermal sensors and devices, including tools, machinery and equipment.

Duties of Mechanical Engineers

Mechanical engineers usually do the following:

Analyze issues to see how mechanical and heating devices can help a machine solve a particular problem

Designing or redesigning mechanical and heating devices or accessories using analytics and computer aided design

Investigate equipment failures or difficulties to detect operation malfunction and suggest solutions

Design Create and test prototypes of the devices they design

Results Examine the test results and modify the design or layout as needed

Oversee the manufacturing process for the device

Mechanical engineering is one of the broadest fields of engineering. Mechanical engineers design and oversee many products, from medical devices to new batteries.

Mechanical engineers design electric generators, internal combustion engines and generating engines such as steam and gas turbines, and electric machines such as air conditioning and air conditioning systems.

Mechanical engineers design other machines within buildings, such as elevators and escalators. They also design material-handling systems such as conveyor systems and automatic transmission stations.

Like other engineers, mechanical engineers use computers extensively. Mechanical engineers are usually responsible for integrating sensors, controllers and machinery. Computer technology enables mechanical engineers to create and analyze designs, run simulations and test how a machine may work, interact with connected systems, and create specifications for parts.

Examples of the following types of mechanical engineers:

Auto research engineers seek to improve the performance of cars. These engineers are working to improve the traditional features of cars such as suspension, and they are also working on aerodynamics and new potential fuels.

Engineers work to create and maintain ecosystems where temperature and humidity must be kept within certain limits. They make similar systems for planes, trains, cars, schools and even computer rooms.

Robot engineers design, build, and maintain robots. These engineers plan how robots use sensors to detect objects based on light or smell, and design how these sensors fit into the design of the robots.

Ground nut can kill the human ???????or save the life breaf explanation

Ground nut can kill the human ???????or save the life  breaf explanation

 

* Doctor's Enemy *

* Groundnut *

* Kills sugar *

In the field where groundnut is cultivated in our country there will not be so many rats in the field till the season when it bears nuts. But after the groundnut fruiting season, the rats can be seen to have overgrown. A good example of this is the peanut-eating goats, cows, dogs, and birds all around the field at the same time.

Peanuts are high in folic acid and reproduce quickly. Therefore, women who regularly eat peanuts have a smooth pregnancy and not only do not develop uterine tumors and cysts, but also with childbirth.

Preventing Diabetes:

Groundnut is rich in manganese. Manganese plays an important role in the conversion of nutrients and fats. Calcium from the food we eat is also used to get to our body. Women in particular can be protected from osteoporosis if they eat peanuts regularly.

Dissolving gallstones:

Eating 30 grams of groundnuts daily can help prevent gallstones. This information was revealed in a study conducted for 20 consecutive years.

Heart protection:

We think eating peanuts will put on weight. Not true. Conversely peanuts can also be eaten by those who think they should not gain weight. Groundnut is rich in resveratrol. It protects the heart valves. It also prevents heart disease. This is one of the best antioxidants.

Maintaining youth

It helps greatly in maintaining youth. Groundnut contains an antioxidant called polyphenols. It is used to prevent us from getting sick and to maintain youth.

Increases memory power:

Peanuts are like a good tonic for brain development. Groundnut contains vitamin 3 niacin which is used for brain development. It is very beneficial for brain development and memory. Regulates blood flow.

Depression:

Groundnut is rich in the essential amino acid baryptophan. This type of amino acid stimulates the brain called serotonin. Used to produce biochemicals. Serotonin stimulates the brain nerves. Relieves stress. Relieves stress for those who regularly eat peanuts.

Cholesterol triglyceride:

Those reading the title may be surprised. But that is the truth. Many of us would have thought that eating peanuts would be high in fat. But that is not true. Instead, peanuts contain fat that is good for humans. The copper and zinc nutrient in peanuts reduces the harmful fats in our body and increases the good fats. 100 grams of peanuts contain 24 grams of monounsaturated fat. Contains 16 grams of polyunsaturated fat.

These two types of fats are the fats that are good for our body. Peanuts have more beneficial fat than almonds. The omega-3 nutrient in peanuts boosts our body's immune system.

Groundnut attracts Americans:

India is the second largest producer of groundnut in the world after China. Groundnut is also a major contributor to the population of both countries. The practice of eating peanuts is a barrier to the sale of pediatric medicines in India and some heart medicines cannot be sold. So they spread misinformation about groundnut to Indians and stopped the use of groundnut and groundnut oils. This has led to an increase in childless couples.

For the last several years the price of groundnut in India has been selling at the same price without any major change. But over the same period, the share of peanuts in the American diet has increased 15 times and so has the price. Misinformation about groundnuts has been spread among Indians that Americans should buy groundnuts at a higher price if all Indians start eating groundnuts.

End of ovarian dysfunction:

Peanuts regulate the normal hormonal growth of women. This prevents women from having premature births and developing breast cancer in women. Groundnut is rich in folic acid, phosphorus, calcium, potassium, zinc, iron, vitamins and crutamic acid which are essential for women. It also prevents women from developing ovarian tumors and cysts.

* Rich in nutrients:

100 grams of groundnut is rich in the following nutrients.

Carbohydrate- 21 mg.

Fiber- 9 mg.

Soluble fat - 40 mg.

Protein - 25 mg.

Tryptophan- 0.24 g.

Tryonine - 0.85 kg

Isoleucine - 0.85 mg.

Leucine - 1.625 mg.

Lysine - 0.901 kg

Glutamic acid - 5 g

Glycine - 1.512 kg

Vitamin-B1, B2, B3, B1, B2, B3, B5, B6, C.

Calcium (Calcium) - 93.00 mg.

Copper - 11.44 mg.

 

Forging Process

 Forging process is perhaps the oldest metal working process and was known even during prehistoric days when metallic tools were made by heating and hammering.

Forging is basically involves plastic deformation of material between two dies to achieve desired configuration. Depending upon complexity of the part forging is carried out as open die forging and closed die forging.

In open die forging process, the metal is compressed by repeated blows by a mechanical hammer and shape is manipulated manually.

                                                  

                                                                          

In closed die forging, the desired configuration is obtained by squeezing the workpiece between two shaped between two shaped and closed dies.

 

In forging process the forces are applied on the raw material such that the stresses induced are greater than yield and less than ultimate so that material is experiencing plastic (or) permanent deformation to get required shape. But in forging operation force applied can be either continuous or intermittent impact loads.

 

Types of forging methods:

 

1 Based on the method of force application

1.      Hand forging (Drop hammer type)

2.      Machine forging (Mechanical or hydrostatic forging)

1.1 Hand forging:

Hand forging always uses drop hammer type. Because the continuous force by the human hand, it is not sufficient to produce the deformation in work piece.

1.2 Machine forging:

In machine forging because the required force is obtained from machine it is possible to use either continuous force application or intermittent impact load application.

 

2. Based on method of shape obtained

1.      Open die forging

2.      Closed die forging

3.      Semi die forging

2.1 Open die forging

§  In open die forging operation only drop hammer type of force application will be used.

§  Press forging is not used since there is no time fr changing the position of component.

Features of open die die forging:

§  Repeated impact blows are given on the work.

§  Less dimensional accuracy.

§  Suitable only for simple shapes of work.

§  Requires more skill of the operator.

§  Usually used for a work before subjecting it to closed die forging (to give approximate shape.

§  Dies are simple and less expensive.

§  It can be analyzed much easily.

§  it is the simplest of all forging operations.

2.2 Closed die forging

§  Closed die forging is also called as impression die forging because the shape of the dies is impressed on the component.

§  In this the type of forging force application may be either press forging type or drop hammer type will be used.

Features of closed die forging:

§  Closed die forging involves two or more steps:

1.      Blocking die: Work is rough forged, closed to final shape.

2.      Finishing die: Work is forged to final shape and dimension.

§  Both blocking die and finishing die are machined into the same die block.

§  More number of dies are required depending on the complexity of the job.

§  Two die halves close-in & work is deformed under high pressure.

§  High dimensional accuracy/close control on tolerances.

§  Suitable for complex shapes.

§  Dies are complex and more expensive.

§  Large production rates are necessary to justify high costs.

2.3 Semi closed die forging operation

§  Only drop hammer type of force application is possible.

§  In case of open die and closed die forging operations the volume of raw material required is remaining same as that of the volume of final finished component. But in case of closed die forging operation the volume of the raw material is about 10% to 20% more than final component to be obtained.

§  To accommodate the excess volume of material it is required to provide some open space dies also called gutter.

§  Because of provision of gutter the flash is produces in the forged component.

§  This flash is unwanted material which has to be removed by trimming operation.

§  Flash and gutter is used only in case of closed die operation but not in open die or semi closed die forging operation.

 

Advantages of forging:

Some common advantages of choosing forging operation are listed below:

1.      Forged parts possess high ductility and offers great resistance to impact and fatigue loads.

2.      Forging refines the structure of the metal.

3.      It results in considerable saving in time, labor and material as compared to the production process of similar item by cutting from a solid workpiece and then shaping it.

4.      Forging distorts the previously created unidirectional fiber as created by rolling and increases the strength by setting the direction of grains.

5.      The forged parts can be welded easily.

6.      Because of intense working, flaws are rarely found, so have high reliability.

7.      High accuracy may be obtained in forging operation.

 

Disadvantages of forging:

Few disadvantages of choosing forging operation are listed below:

1.      Rapid oxidation in forging of metal surface at high temperature results in scaling which wears the dies.

2.      It is difficult to maintain close tolerances in forging operations.

3.      Forging is limited to simple shapes and has limitation for parts having undercuts etc.

4.      Some materials are not readily worked by forging.

5.      The initial cost of forging dies and the cost of their maintenance is high.

6.      The metals gets cracked or distorted if worked below a specified temperature limit.

7.      The maintenance cost of forging dies is also very high.

 

Safety Precautions in Forging Shop

Some safety precautions in forging shop to followed while performing forging operation to avoid injuries and accidents are listed below:

 

1.      Always avoid the use of damaged hammers.

2.      Never try to strike a hardened surface with a hardened tool.

3.      No person should stand in line with the flying objects.

4.      Always use the proper tongs tool to grip and lift objects according to the type of work.

5.      The anvil should always be clean and free from moisture and grease while in use.

6.      Always wear proper clothes such as apron, foot-wears and goggles.

7.      The handle of the hammer should always be tightly fitted in the head of the hammer.

8.      Always put out the fire in the forge before leaving the forging shop.

9.      Always keep the working space clean and tidy.

10.  Proper safety guards should be provided on all revolving parts.

11.  Head of the chisel should be free from burrs and should never be allowed to spread.

12.  During machine forging, always observe the safety rules prescribed for each machine.

13.  One must have the thorough knowledge and working of the forging machine before going to operate it.

 

 

 

 

 

 

 

Best window cleaning Robert by prof.moses

            Best window cleaning Robert by prof. Moses 

 Hi my dear friends I  am writing this article about a best window cleaning Robert normally todays Roberts are  play wide role of  humans life , So below I mention some brand names below best cleaning Roberts 

• Best Overall: Hobot 298.

The Hobot 298 a robotic cleaner packed full of powerful and convenient features. This cleaner uses artificial intelligence to determine the most efficient route, and it keeps track of areas it has cleaned, allowing it to stop when the job is complete

• 
  
• Best Value: Fegrui R-C901.

This glass cleaning robot works surprisingly well. Better than I expected. We have some high up windows that I use to climb a ladder to clean. As we age ... the ladders aren't a good idea anymore so I started using a squeegee with a pole, not easy & was leaving streaks. Now I just place the glass robot and let it do it thing. It does need help with 'crusties' but for the most part I am very pleased with the initial operation.
Simple, easy and does a decent job. Nice product.
I'll update this review after we've been using it but we have initially found this to be a useful and well preforming product.
We usually don't leave reviews unless the product is either very poor or very pleased.
This item we are VERY PLEASED !

•