Calculation Xinhua Xu rubber O-ring

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2016-08-17 17:54:04: 　
Calculation Xinhua Xu rubber O-ring

Weight of the rubber O-ring of the formula:

(Square cross-sectional area radius * 3.14) * (diameter rubber O-ring diameter multiplied by 3.14+) * density rubber O-ring / 1000 (unit weight g)

Xinhua Xu as the outer diameter of the rubber O-ring is 50MM, diameter is 4MM, material is NBR rubber. So the weight of rubber O-ring is calculated as follows:

2 * 2 * 3.14 * (3.14 * 46 + 4) * Density g /1000=2.2373 1.2NBR rubber. Material density and weight of the rubber O-ring O-ring is directly related to the density of the different materials vary, the common rubber O-rings are made of NBR, EPDM, silicone, Viton, PU, ??and so on.

Xu Xinhua perimeter rubber O-ring of the formula:

Xinhua Xu rubber O-ring is a circular linear products, rubber O-ring perimeter formula is (the diameter of the rubber O-ring is multiplied by 3.14) + diameter = O-ring circumference.

Xu Xinhua diameter as the rubber O-ring is 60MM, diameter 3MM, calculated as follows: (60 * 3.14) + 3 = 191.4MM.

Xu Xinhua Rubber Products rubber O-ring groove formula:

d (inner diameter of the trench) = a (O-ring stretching ratio: static sealing 1.035) [d (free state O-ring inner diameter) + dw (O-ring cross-sectional diameter in the free state)] - under dw (free state O-ring cross-section diameter)

D (outer diameter of the trench) = 2dw (O-ring cross-sectional diameter of a free state) [1-β (O-ring compression rate of 20%)] + d (groove diameter)

Above can be drawn on the perimeter of the rubber O-ring, with the accuracy of this formula can reach one hundred percent.

The amount of compression generally depends mainly on the hardness of the material Xinhua Xu rubber O-ring, if the hardness Xinhua Xu O-ring is 70 degrees, then the amount of compression refrigerant resistance O-ring is equal to 20%. Of course, the lower the hardness Xinhua Xu rubber O-rings, rubber O-ring compression greater, mainly for low-pressure place.

Xu Xinhua higher the hardness of the rubber O-rings, the smaller the amount of compression of the rubber O-ring, mainly used for high pressure, pressure, small resistance environments. So you can get the amount of compression you need any hardness of the rubber O-ring.

Calculation Xinhua Xu rubber O-ring

Weight of the rubber O-ring of the formula:

(Square cross-sectional area radius * 3.14) * (diameter rubber O-ring diameter multiplied by 3.14+) * density rubber O-ring / 1000 (unit weight g)

Xinhua Xu as the outer diameter of the rubber O-ring is 50MM, diameter is 4MM, material is NBR rubber. So the weight of rubber O-ring is calculated as follows:

2 * 2 * 3.14 * (3.14 * 46 + 4) * Density g /1000=2.2373 1.2NBR rubber. Material density and weight of the rubber O-ring O-ring is directly related to the density of the different materials vary, the common rubber O-rings are made of NBR, EPDM, silicone, Viton, PU, ??and so on.

Xu Xinhua perimeter rubber O-ring of the formula:

Xinhua Xu rubber O-ring is a circular linear products, rubber O-ring perimeter formula is (the diameter of the rubber O-ring is multiplied by 3.14) + diameter = O-ring circumference.

Xu Xinhua diameter as the rubber O-ring is 60MM, diameter 3MM, calculated as follows: (60 * 3.14) + 3 = 191.4MM.

Xu Xinhua Rubber Products rubber O-ring groove formula:

d (inner diameter of the trench) = a (O-ring stretching ratio: static sealing 1.035) [d (free state O-ring inner diameter) + dw (O-ring cross-sectional diameter in the free state)] - under dw (free state O-ring cross-section diameter)

D (outer diameter of the trench) = 2dw (O-ring cross-sectional diameter of a free state) [1-β (O-ring compression rate of 20%)] + d (groove diameter)

Above can be drawn on the perimeter of the rubber O-ring, with the accuracy of this formula can reach one hundred percent.

The amount of compression generally depends mainly on the hardness of the material Xinhua Xu rubber O-ring, if the hardness Xinhua Xu O-ring is 70 degrees, then the amount of compression refrigerant resistance O-ring is equal to 20%. Of course, the lower the hardness Xinhua Xu rubber O-rings, rubber O-ring compression greater, mainly for low-pressure place.

Xu Xinhua higher the hardness of the rubber O-rings, the smaller the amount of compression of the rubber O-ring, mainly used for high pressure, pressure, small resistance environments. So you can get the amount of compression you need any hardness of the rubber O-ring.
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