What Is the Dyne?

Dyne, a force that causes an object with a mass of 1 gram to generate an acceleration of 1 cm / s ^ 2 is called 1 dyne.

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Dyne, a force that causes an object with a mass of 1 gram to generate an acceleration of 1 cm / s ^ 2 is called 1 dyne.

Chinese name

Dyne

Mechanical unit

10 ^ 5 Dyne = 1 Newton

Exchange

1N = 10 ^ 5dyn

Abbreviation

dyn

The force that causes an object with a mass of 1 gram to produce an acceleration of 1 cm / s ^ 2 is called 1 dyne.

dyn

example

Known: 1 dyne = 1 g * cm / s ^ 2, test proves: 1

The unit for calculating welding workload, that is, welding equivalent. The foreign name is dyne , which means that a weld with a diameter of 1 inch is one welding equivalent (one dyne). Ten 1-inch welds are 10 dynes, and two 5-inch welds are also 10 dynes. This statistical method only considers the diameter of the welds and does not consider the effect of wall thickness, so it is only applicable to Weld joints below 8 mm; each additional 2 mm over 8 mm is multiplied by a factor of 0.1. Specific coefficients can also be discussed.

The amount of welding works in the installation area can be calculated according to the empirical formula:

Welding quantity in the installation area = total pipeline length × 0.127 (correction factor) × pipeline opening + (number of elbows × pipeline opening × 2) + (three tees × pipeline opening × 3) + (flange × pipeline opening) + (Number of heads x Pipe inch x 2)

For the non-installation area, that is, the corridor area, it can be calculated according to the formula:

Welding quantity in non-device area = number of welds (total length of pipeline / length of single pipeline) × pipeline inch opening + (number of elbows × pipeline inch opening × 2) + (number of tees × pipeline inch opening × 3) + (flange Quantity x pipeline inch mouth) + (number of heads × pipeline inch mouth × 2)

For example: the pipeline is 3 , the number of welds is 20, and the welding amount is 60.

The inch size of the pipeline in the above formula is the inch system of the pipeline outer diameter. The above formula is only a method for calculating the pipe diameter.

For thick-walled pipes, a factor can be multiplied empirically.

There is also a method that can be used to estimate the total number of welds based on the number of drawings in the total single line drawing based on experience.