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Choj expansion thiab contraction teeb meem

Jiangsu Bailey hlau choj Co., Ltd | Updated: Jul 23, 2015

Vim cov kev hloov hauv ambient kub, hlau cable tais expansion thiab contraction ntawm cov phenomenon. Choj sab nraum zoov kub ib puag ncig thiab kub siab tshaj 40 degrees Celsius, qhov tsawg tshaj plaws kub yog-20 degrees, qhov nyiaj pab ntau tshaj shrinkage rau cable tais soj ntsuam raws li cov qauv hauv qab no:

Δ t = x1000mm 11.2 x 10-6x60deg (degrees)

Thaum xaus:

Sov li ntawm 60 ℃, δ ι = 0.672 hli/m

Thaum twg tus kub yog 50 c, δ ι = 0.560 hli/m

Thaum twg tus kub yog 40 c, δ ι = 0.448 hli/m

Ncaj theem rau cable cov yuav tsum tau muab rau hauv cov nyiaj nyob hauv tus qauv siv ntawm expansion pob qij txha, expansion ob leeg yov yeej ras uas txiav txim li nram no:

Thaum twg tus kub yog 40 degrees 50m;

Thaum twg tus kub yog 50 c rau 40m;

Thaum tus kub ntawm 60 ℃, 40m.

Tug: Cov yam ntxwv ntawm luv loj cable tais

Tom ntej: Tsis muaj