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Calculation of ferrules spiral

Spiral Calculation

In most cases, the calculation of the fechral coil is made for making a kiln for firing at home. In such cases, it is necessary to consider the resistivity of the alloy, the diameter of the wire, as well as the power of the power supply network. All data is given from the calculation of the known resistivity of fehral, equal to 1.4 Ohmxmm2/m at 220 V. Using the table, it is easy to determine the diameter of the rod, on which the coil is wound, and the length of the rod when winding "turn to turn", depending on the thickness of the wire. The length of the coil for a different voltage is recalculated using the usual mathematical proportion.

Legend: rod length - L, mm; rod diameter - D, mm.

Ø of thread mm 0,2 yarn diameter mm 0,3 thread diameter mm 0, 4 thread diameter mm 0,5
D L Thread length L String length
L Strand length
L Strand length
1,5 40 942 60 942 80 942 100 942
2 30 942 45 942 60 942 75 942
3 20 942 30 942 40 942 50 942
4 15 942 22 942 30 942 39 942
5 12 942 18 942 24 942 30 942
6 10 942 15 942 20 942 24 942
Thread Ø mm 0.6 Thread Ø mm 0.7 thread Ø mm 0,8 thread Ø 0.9 mm
D L Yarn length
L Strand length
L Strand length
L Strand length
1,5 120 942 140 942 160 942 180 942
2 90 942 105 942 120 942 1120 942
3 60 942 70 942 80 942 90 942
4 45 942 52 942 60 942 66 942
5 36 942 42 942 48 942 48 942
6 30 942 35 942 40 942 45 942

The results stated in the table are easy to check according to the following formula. Length of thread (in mm) = nDL rod/thickness of thread, where n = 3.1415926, D - diameter of rod (in mm). If, for example, it is necessary to determine at voltage 127 V the length of rod with diameter 4 mm, for winding of wire with thickness 0.3 mm. The table shows that the length of the rod at 220 V equals 22 mm. Making the usual ratio: 22mm - 220V; X - 127V, we see: X = 22x127/ 220 = 12.7mm. Accordingly, the fechral wire will be shortened. When winding the wire, it is necessary to connect it, without cutting it, to the voltage source, making sure that it is winded correctly. Closed spirals increase the winding length by 1/3 of the value given in the table.

Supplier

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Buy a favorable price.

Auremo" company offers a calculation of the spiral made of fhehrali. The widest selection of nickel alloys for large-scale production is in stock. We have attractive terms and conditions for retail buyers. Fehral spiral is always available, the price - due to the technological features of production without the inclusion of additional costs. Quality meets GOST and international standards. Optimal price from the supplier. Buy today. We are waiting for your orders.

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