(1) For cold-rolled strips, see Table 8-75-Table 8-77 Table 8-75 Soft magnetic alloy cold-rolled strip size and thickness tolerance (mm)
Thickness allows deviation width length ≤ 0.015 ±O. 00015 1o -40 lO000 >O. 0015～0.002 ±0.0002 >0.002～0.003 ±O. 0003 >0.0()3～0.005 ±O. 0005 10 -100 > 0.005～0.01 ±O. 001 20000 > O. 01～O. 04 +O -O. 003 30000 > O. 04～O. 09 +O -O. 01 20 -250 > O. 09～O. 15 +O -O. 02 20000 > O. 15～0.25 +0 -0.03 6000 > 0.25～0.40 +0 -O. 04 30 -300 3000 > 0.40～O. 70 +O -O. 05 > 0.70～O. 95 +0 -0.07 1000 > O. 95 ～1.35 +O -O. 08 80 -300 > 1.35～1.75 +O -O. 11 > 1.75～2.30 +O -O. 13 >2.30～3.00 +0 -0.16
thickness | < td>Width | Length≤ | |
0.015 | ±O．00015 | 1o -40 | lO000 |
>0.0015～0.002 | ±0.0002 | ||
>0.002～0.003 < /td> | ±O．0003 | ||
> 0.0()3～0.005 | ±O.0005 | 10 -100 | < td>|
>0.005～0.01 | ±O．001 | 20000 | |
>O.01～O.04 td> | +O -O．003 | 30000 | |
>O．04～O．09 | +O -O．01 | 20 -250 | |
>O.09～O.15 | +O -O．02 | 20000 | |
| >O. 15～0.25 | +0 -0.03 | 6000 | |
>0.25～0.40 p> | +0 -O. 04 | 30 -300 | 3000 |
>0.40～O. 70 | +O -O. 05 | ||
>0.70～O. 95 | +0 -0.07 | 1000 | < /tr> |
>O. 95 ～1.35 | +O -O. 08 | 80 -300 | |
>1.35～ 1.75 | +O -O. 11 | ||
>1.75～2.30 | < td>|||
>2.30～3.00 | < td>
Note: 1. According to the requirements of the buyer, the thickness is greater than or equal to O. For 35mm strips, strips with a width greater than 300-450mm can be supplied, and the thickness deviation is allowed to be wider than the regulations in the table. Olmm. 2. The cold-rolled strip shall not have buckling or obvious waves (the ratio of peak height to peak distance shall not be greater than 4%), and the sickle bend shall not be greater than 3mm per meter. But the thickness is O. Strips of 02mm or thinner are allowed to have undulations in the free state (not tensioned). Curvy, obvious waves (the ratio of peak height to peak distance should not be greater than 4%), sickle bend should not be greater than 3mm per meter. But the thickness is O. Strips of 02mm or thinner are allowed to have undulations in the free state (not tensioned). Table 8-76 Allowable deviation of width of cold-rolled strip without trimming (mm)
Thickness width≤100 >100 -150 >150～250 >250 ≤ DIV> +4-O 0.05～3.00 +5 One O +7 One O +lO —O +12 One O
Thickness | Width | |||
≤100 | >100 —150 | >150～250 | >250 | |
≤ | ||||
DIV> td> | +4 One O | |||
0.05～3.00 | +5 one O | +7 one O | +lO —O | +12 one O |
Table 8 Allowable deviation of width of -77 trimmed cold-rolled strip (mm)
Thickness width≤100 >100 ≤0.05～0.50 +O -0.3 +O -0.5 >O.50 ～1.00 +O —O．4 +O —O．6 >1.00 +O —O．6 +O —O．8
Thickness | Width | |
| ≤100 | >100 | |
≤ | ||
O.05～0.50 | +O-0.3 | +O-O. 5 |
>O. 50～1.00 | +O —O. 4 | +O —O. 6 |
>1.00 | +O —O. 6 | +O —O. 8 |
(2) See Table 8-78 for cold drawing materials. Table 8-78 Diameter and allowable deviation of cold-drawn soft magnetic alloy wire (mm)
Diameter allowable deviation 0.05～0.10 ±O. 010 > O. 10～O. 30 ±O. 014 > O. 30～0.60 ±O. 018 > 0.60～1. O ±0.020 >1. O～3. O ±O. 030 > 3. O～6. O ±O. 038
Diameter | Promise to deviation |
±O. 010 | |
>O. 10～O. 30 | ±O. 014 |
>O. 30～0.60 | ±O. 018 |
>0.60～1. O | ±0.020 |
>1. O～3. O | ±O. 030 |
>3. O～6. O | ±O. 038 |
Note: The roundness of cold drawn wire shall not be greater than 1/2 of the diameter tolerance. (3) Hot-rolled (forged) flat materials and bars are shown in Table 8-79 to Table 8-81. For flat materials and bars, see Table 8-79 to Table 8_81. Table 8-79 Dimensions and tolerances of soft magnetic alloy hot-rolled flat materials (mm)
Thickness tolerance of thickness tolerance width tolerance tolerance of width width ≥ 3． O～4. O ±O. 2 20～300 +3 —2 800 >4.0～7. O ±O. 3 > 7.0～13. O 士O. 4 500 > 13. O～22.0 ±O. 5
Thickness | Thickness allowable deviation | Width | Width allowed deviation | Length≥ |
3. O～4. O | ±O. 2 | 20～300 | +3 —2 | 800 |
>4.0～7. O | ±O. 3 | |||
>7.0～13. O | 士O. 4 | 500 | ||
>13. O～22.0 | ±O. 5 |
Note: 1. The hot-rolled flat material should be straight and the sickle bend should not be larger than 4mm per meter. 2． The difference between the diagonals of the hot-rolled flat material on the same section shall not be more than 1/2 of the width tolerance. Table 8. Dimensions and tolerances of 80 soft magnetic alloy hot-rolled bars (mm)
Diameter tolerance 6～7 ±0.30 >7～20 ±O. 35 > 20～30 ±0.40 > 30～50 ±O. 50 > 50～80 ±O. 70
Diameter | Promise to deviation |
Tu 0.30 | |
>7～20 | Shi O. 35 |
>20～30 | ±0.40 |
>30～50 | ±O. 50 |
>50～80 | 士O. 70 |
Note: 1. Hot-rolled (forged) bars should generally be delivered in straight bars, but those with a diameter less than 12mm can be delivered in coils. 2. The straight hot-rolled bar should be straight, with a curvature not greater than 4mm per meter, and the total curvature must not be greater than O of the total length of the alloy. 4%. 3. Forged bars should be straight, with a curvature not greater than 5mm per meter, and the total curvature must not be greater than O of the total length. 5%. 4. The roundness of forged round bars shall not be greater than 70% of the diameter tolerance. The difference between the diagonals of the forged square bars on the same section shall not be more than 1/2 of the side length tolerance. 5. The roundness of hot-rolled round bars should meet the requirements of the following table. (mm)
Diameter roundness≤40 50% of diameter tolerance >40～85 70% of diameter tolerance >85 75% of diameter tolerance
Diameter | roundness |
≤40 td> | 50% of diameter tolerance |
>40～85 | 70% of diameter tolerance |
>85 | 75% of diameter tolerance % |
Note: The difference between the diagonals of the hot-rolled square bar in the same section shall not be greater than 1/2 of the side length tolerance. Table 8-81 Size and tolerance of soft magnetic alloy hot forging material (mm)
The tolerance of side length or diameter is 9～12 ±1. O >12～35 ±2.0 >35～50 ±3.0 >50～80 ±4.0 >80～100 ±5.0
Side length or diameter< /p> | Promise the deviation |
9～12 | ±1. O |
>12～35 | 士2.0 |
>35～50 | 士3.0 |
>50～80 | 士4.0 |
> 80～100 | ±5.0 |
