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1. 3.14*1.6*1.6*6kg

2. It's better to calculate with the original air pressure:
if you use five air pressures [5kg per square centimeter], you need the diameter of the cylinder to be
[80 divided by 5, then divided by 3.14, then squared, and then multiplied by 2]
these are just theories. Should we use oil pressure or air pressure according to the actual needs
each of them has its own advantages and disadvantages
contact again if you need to

3. The preloading force is the preloading pressure times the cylinder area; When pressurizing, the force is 5kg air pressure times the pressurized cylinder diameter. It's very simple. The force of the series cylinder depends on the one with larger force, which cannot be superimposed.

4. The first problem is to select the cylinder. First, you need to know the total area of the actual force when you punch. Then divide 1 kg by the total area of the actual force to calculate the required pressure (air pressure). For example, for a 50t punch, the total area of the stamping part is 0.1 square meter
then the average pressure of the stamping part is 50t / 0.1 = 50MPa, which must be greater than the tensile strength of the stamping part, Otherwise, it will not be able to punch normally.
the calculated output of the cylinder depends on the air pressure and cylinder diameter provided by you
output = cylinder pressure x cylinder diameter. For example, if the air compressor provides 1kg pressure and you need 10kg force, then the area of the cylinder is
10 * 10 / [1 * 10 ^ (5)] = 10 ^ (- 3) square meters = 10 square centimeters= π* D ^ 2 / 4
d = 3.56, the cylinder diameter of 4cm can meet the requirements. Of course, I don't consider the weight of abrasive tools and so on
the second problem. When it comes to air compressor, gas does work
the air storage capacity of the air compressor represents the load capacity of the air compressor. The pressure is the same, but the flow is different. The gas flow rate of gas work consumption is different. The gas cylinder is equivalent to the capacitance in the power supply. The gas storage capacity is equivalent to the capacity of the power supply. If there is no gas cylinder, when a certain amount of air is emptied, the gas pressure will decrease sharply, the system will not work normally, and the air compressor may be damaged. The principle of selecting the air compressor is to pull the car with a big horse. The air compressor and gas storage bottle are selected according to the gas flow.

5.

1. Air consumption: the amount of air consumed in the cylinder and the piping between the cylinder and the reversing valve when the cylinder reciprocates for one stroke (under standard atmospheric pressure)

2. Maximum air consumption rate: when the cylinder piston moves at the maximum speed, Air consumption per unit time (under standard atmospheric pressure)

maximum air consumption of cylinder: q = piston area X piston speed x absolute pressure

the commonly used formula is: q = 0.046d & # 178; V (P + 0.1)

Q ------ maximum air consumption of cylinder under standard state (L / min)

d ------ cylinder diameter (CM)

V ------ maximum speed of cylinder (mm / s)

P ------ service pressure (MPA)

extended data

engine cylinder liner and piston ring are under high temperature, high pressure and high pressure A pair of friction pairs working under alternating load and corrosion. Working in complex and changeable conditions for a long time, the result is that the cylinder liner is worn and deformed, which affects the power performance, economy and service life of the engine. It is of great significance to analyze the causes of wear and deformation of cylinder liner for improving the economy of engine

in the process of use, problems should be found and eliminated in time, and damaged and deformed parts should be replaced or repaired at any time

The cylinder liner should be inspected and assembled in strict accordance with the technical requirements. In the operation of ring replacement under warranty, the piston ring with proper elastic force should be selected. If the elastic force is too small, the gas will flow into the crankcase and blow off the oil on the cylinder wall, which will increase the wear of the cylinder wall; If the elastic force is too large, the wear of the cylinder wall will be aggravated directly, or the oil film on the cylinder wall will be damaged

6. The working volume of the cylinder is the volume swept by the piston. How to calculate the air consumption in one minute? If it is at idle speed (800 RPM), inhale once every two revolutions (four strokes), it is 800 / 2 * exhaust volume; This is the theoretical value. In fact, the valve is closed at idle speed (only the idle hole is left for intake). For the 1.8L engine, the intake volume at idle speed is about 3.6g/s

7.

The performance of deflation:

deflation refers to when the currency in circulation in the market decreases, the people's money income decreases, the purchasing power decreases, affecting prices to fall, resulting in deflation

If a country adopts a tightening monetary and fiscal policy, recing money supply, recing public expenditure and recing transfer payment, it will lead to the imbalance between the commodity market and the money market, resulting in "too much goods pursuing too little money", which will lead to policy tightening deflation

When the economy reaches the peak stage of prosperity, there will be a large amount of excess proction capacity, oversupply of goods, continuous decline of prices and periodic deflation

Deflation is the monetary manifestation of economic recession, so it must have three basic characteristics:

first, the general and continuous decline of prices; Second, the continuous decline of money supply; Third, the effective demand is insufficient and the economy is in full recession. This view is called "three elements theory"

Although the specific causes of deflation in different countries are different in different periods, the general causes of deflation can be summarized from the theoretical analysis of domestic and foreign economists on deflation:

1, Recing money supply, recing public expenditure and recing transfer payment will lead to imbalance between commodity market and money market, and "too many commodities pursue too little money", which will lead to policy deflation

When the economy reaches the peak of prosperity, e to a large amount of excess proction capacity, oversupply of goods, prices will continue to decline, leading to periodic deflation

When people expect the real interest rate to further decline and the economic situation to continue to be poor, the demand for investment and consumption will decrease, while the rection of aggregate demand will make prices fall, forming a demand driven deflation

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