Mechanical Engineering

a cokeless cupola is an industrial melting furnace used for remelting grey iron for casting or alloying it differs from traditional cupola furnaces in that it is cokeless.
traditional cupolas run on coke which is a refined coal product. most power plants run on coke. the traditional cupola is a vertically oriented tube filled with coke. the coke burns and is kept lit by a forced air introduced into the furnace through one or many holes in the lower third of the vertical shaft called tuyeres. the metal is introduced through the top and as the metal melts it collects in the bottom of the shaft until the collection area or well is full. the metal is then tapped out of the furnace through a hole at the furnace's base called the tap hole. it pours into a receiver, ladle, or mold.
cokeless cupolas use no coke so the inner workings of the furnace are different though they look similar from the out side. in the cokeless cupola instead of just forced air coming into the furnace at the tuyere, there are gas fired burners which provide the necessary heat to melt iron. directly above the burners is a water cooled grate that bridges the vertical shaft, creating a porous shelf that can both support the wait of fresh solid metal and allow liquid metal to drip through and collect in the well bellow. above the grate are many ceramic spheres known as the bed. the bed is super heated by the burners and reflects heat into the metal as it melts to keep it molten. iron is introduced at the top of the shaft onto the bed and when it melts and collects in the well it is tapped out as in a coke fired cupola.
operationally there are pros and cons to both methods of iron melting but cokeless cupolas are more fuel efficient, environmentally friendly, economical, and a cokeless cupola with the same bore as coke fired cupola can tap out upwards of twice as much metal because there is only iron in the well while there is approximately 60% coke in the well of conventional cupolas.

When the molten metal of the weld pool reacts with the oxygen in the air. Typically, in arc welding a shielding gas is used. Usually argon as it does not react because it's a halogen. If welding iron or steel, oxidation causes the build up of iron oxide which is rust.

slot drill on milling machine

First calibrate the micrometer by dialing the spindle to zero and adjusting the anvil until it is flush against the spindle. Measure the screw until the ratchet begins to click and take the first reading. This reading can then be compared to a machining book to verify the pitch diameter.

the fullform of DIN is Dual In Process

If you are talking about a roof water drain pipe to sewer it is illegal. If you are talking about a sink drain pipe well that is where they all connect to so yea.

Instantanoous multipoint water heaters : These provide hot water to multiple taps or appliances at the same time. when the hot tap is turned on, a powerful gas burner in the heater ignites. The incoming cold water is heated as it flows through a large heat exchanger located above the gas burner. The heat ecchanger heats up a large volume of water very rapidly. They do not supply hot water to a cental heating system. Combination boiler : These provide hot water to the central heating system and instantanious hot water to the tap. when the hot water tap is turned on all the heat is diverted to the heat exchanger to give a rapid responce. hope this is of some use. austin mod 6

fuel mixture for homelite chain saw

3sp is a russian standard grade for kind of steel with 0.14-0.22 carbon

0.15-0.30 si

0.45-0.60 mn

max 0.3 cr

In auto lathe machine, All the processes is automatic from the beginning to the end . Machine take working pieces from the workpiece box where all the pieces loaded initially,then all the processes done on the workpieces as per the command is given initially . final product comes out finally. But in semi lathe machine , all the work is same as automatic lathe but feed is not automatic it done by manually by technician .

The difference between the GGG-40 and GGG-50 butterfly valve is the suitable temperature. The GGG-40 is recommended for 45 degrees C to 150 degrees C and the GGG-50 is recommended for 35 degrees C to 130 degrees C.

W=wrought p=pipe b=bend

Airplanes are usually towed out of the gate of an airport. This is because an aircraft can reverse normally. They do have reverse thrust but essentially it is just reversing the flow of exhaust from the engines so it slows the aircraft from going forward. Furthermore, reverse thrust is almost exclusively used on landings to slow the aircraft down, other than that, the aircraft no way to move backwards. So to compensate, extremely powerful tugs or push back tractors are used to move the airplane out of the gate.

Other times aircraft would be towed would be when they have trouble maneuvering in a small space. In this position, a vehicle meant for driving on the ground would be better suited than a plane.

Yes you can. You will have to complete any prerequisite coursework required if you have not done so already.

The pipe installed for the purpose of ventilation is known as a vent pipe while a pipe which is installed in a house drainage to preserve the water seal of trap is an anti-siphonage pipe.

It was a Seabee, owned by Colonel Claire and has FAA Registry # N87545. After refusing to rent it to the Bond producers he offered to fly it to the location as long as he could fly it in the movie. Which he did. The real plane was not blown up but an Art Department mock-up was destroyed in its place. Colonel Claire was apparently injured during one take of him beaching the Seabee up onto the beach.

a superstructure has negative degree of freedom... ;0

If you can't use gravity you have to use a pump of some sort.

X42 is 42000psi steel and x52 is 52000psi steel. They come either coated or uncoated.

Your valve timing is off

The o2 sensor is not reading properly causing the system to go very lean.

It is the speed of sound in a fluid at stagnation conditions. For example, if you have air flowing at some speed V with a temperature T and pressure P, the speed of sound in the air at those conditions will be = sqrt(kRT). k is the ratio of specific heats (approx. 1.4), R is the ideal gas constant for air (approx. 0.2870 kJ/kg/K). If that moving air hits an object and stagnates, the pressure, temperature, and density of the will increase to the stagnation conditions by an amount proportional to the air's initial velocity. The stagnation speed of sound will be the speed of the sound at those stagnation conditions (most importantly the speed of sound at the stagnation temperature).

Unprotected steel is generally not recognized as having a fire resistance rating.

As much as 100 lbs

You get a sr pipe everytime you buy a chicken meal at rajas. Good for black people:)