Технология и оборудование производства изделий электронной техники. Шикова Т.Г. - 9 стр.

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9
, '    1   1 ,
$&  
2400
0
,  $& :
& , +
/
181,2 !
 , I
/
1422 0
" , U
/
0,127 !
 &, I

/
0,364 0
 ,
µ′
1,37·10
-9
/
3
 " , &  , $&
  " , $ ., 
  . '.
+
= +
/
ld = 181,2
⋅
10
⋅
0,01 = 18,12 !;
I

= I

/
ld = 0,364
⋅
10
⋅
0,01 = 36,4 0;
µ
=
µ
/
ld = 1,37
⋅
10
-9
⋅
10
⋅
0,01 = 1,37
⋅
10
-10
/ ;
τ
≈
3000 .
2. !.   5   0,16  
& 15 0.   ?
+*     * - + 
      
":
F =
π
dl = 3,14
⋅
0,016
⋅
5 = 0,25 
2
.
  I

= FA
⋅
T
2
KT
W
S
e
−
,
 0 = 60 0
⋅

-2
⋅

-2
W
S
= 4,52 !.

0,015 = 0,25
⋅
60
2
e
-(4,52⋅11600)/
,
  .:
ln 0,015 = ln 15 + 2lnT – 52406/T;
52406 / = 2lnT + 6,91;
= 52406/ (2ln T + 6,91). 
,                           '                                                                  1                  1        ,
$&                                                  2400 0       ,                         $&                          :
    &                            , +/                                    181,2 !
                     , I/                                                1422 0
            "                        , U/                                0,127 !
                                     /
                    &       ,I                                           0,364 0
                                         , µ′                            1,37·10-9 /       3


        "                                       ,            &                                                ,   $&
        "                                 ,                      $             .                   ,
                                              .              ' .
+ = + /ld = 181,2⋅10⋅0,01 = 18,12 ! ;
                /
I       =I          ld = 0,364⋅10⋅0,01 = 36,4 0;
µ = µ/ld = 1,37⋅10-9⋅10⋅0,01 = 1,37⋅10-10 /                                            ;
τ ≈ 3000 .
2. !            .                                                    5                                 0,16
&           15 0.                                                          ?
+ *                                                                                *            - +


    "           :
                                                             2
F = πdl = 3,14⋅0,016⋅5 = 0,25                                    .
                                             WS
                                         −
                                 2
                I = FA⋅T e                   KT     ,
                            -2                -2
        0 = 60 0⋅            ⋅                          WS = 4,52 !.


0,015 = 0,25⋅60 2e-(4,52⋅11600)/ ,
                                                           . :
ln 0,015 = ln 15 + 2lnT – 52406/T;
52406 /             = 2lnT + 6,91;
    = 52406/ (2ln T + 6,91).
                                                             9

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