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Расчеты в технологических процессах плавки литейных сталей. Учебное пособие

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Ʉɲ ɨɩɪɟɞɟɥɹɟɬɫɹ ɩɨ ɮɨɪɦɭɥɟ
j
y
4.2. dzȌșȕȋȢ ȗȇȘȞȌșȇ ȟȏȜșȢ
Ʉ
= (100 í yɲ) / 100,
ɲ
– ɭɝɚɪ ɜɫɟɣ ɫɨɜɨɤɭɩɧɨɫɬɢ ɲɢɯɬɵ ɜ ɩɪɨɰɟɫɫɟ ɩɪɢɝɨɬɨɜɥɟɧɢɹ ɫɩɥɚɜɚ.
ɝɞɟ y
ɲ
n
ɨɩɪɟɞɟɥɹɟɬɫɹ ɩɨ ɮɨɪɦɭɥɟ (4.5).
ɝɞɟ y
j
=
y
ɲ
¦
j
,
1
ȼ ɩɪɢɛɥɢɠɟɧɧɵɯ ɪɚɫɱɟɬɚɯ ɡɧɚɱɟɧɢɟ ɭɝɚɪɚ ɦɨɠɟɬ ɛɵɬɶ ɩɪɢɧɹɬɨ ɞɥɹ
ɷɥɟɤɬɪɨɞɭɝɨɜɨɣ ɩɟɱɢ: y
= 1,5…5,0ௗ%; ɢɧɞɭɤɰɢɨɧɧɨɣ yɲ = 1…2ௗ%.
ɲ
1. ɉɪɢ ɚɧɚɥɢɬɢɱɟɫɤɨɦ ɦɟɬɨɞɟ ɡɚɞɚɱɚ ɪɚɫɱɟɬɚ ɲɢɯɬɵ ɮɨɪɦɢɪɭɟɬɫɹ ɜ ɜɢɞɟ ɪɚɜɟɧɫɬɜ. ȿɫɥɢ ɭɝɚɪ ɪɚɫɱɟɬɧɵɯ ɷɥɟɦɟɧɬɨɜ ɢɡ ɨɬɞɟɥɶɧɵɯ ɫɨɫɬɚɜ­ɥɹɸɳɢɯ ɲɢɯɬɵ ɭɱɢɬɵɜɚɟɬɫɹ ɞɢɮɮɟɪɟɧɰɢɪɨɜɚɧɧɨ, ɬɨ ɪɚɫɱɟɬɧɵɟ ɭɪɚɜɧɟ­ɧɢɹ (4.2), (4.7), (4.8) ɫ ɭɱɟɬɨɦ (4.3) ɢɦɟɸɬ ɜɢɞ:
n
ɗɄ Ʉ ɗ
¦
ij ɷij j j i
ɲɲ ɠ
j
1
ɏ ;
 
ɫɪ
(4.9)
ɏjɲɄj = h; (4.10)
n
¦
j
ɲ
j
1
.ɏ 1
Ʉ 
(4.11)
j
ɉɪɢ ɪɚɫɱɟɬɟ ɲɢɯɬɵ ɩɨ ɫɪɟɞɧɟɦɭ ɡɧɚɱɟɧɢɸ ɭɝɚɪɚ ɷɥɟɦɟɧɬɨɜ ɪɚɫ-
ɱɟɬɧɵɟ ɭɪɚɜɧɟɧɢɹ ɢɦɟɸɬ ɜɢɞ:
n
ɗɄ
ɏ

¦
j
¦
j
1
n
ɷɲ
ɲ
ij ij j
= h / Ʉj; (4.13)
jɲ
ɲ
j
1
21
;ɏ
(4.12)
.ɏ 1/
Ʉ
(4.14)
ɲ
Ɋɚɫɱɟɬɧɵɟ ɭɪɚɜɧɟɧɢɹ (4.9) – (4.11) ɢɥɢ (4.12) – (4.14) ɩɪɟɞɫɬɚɜɥɹɸɬ ɫɨɛɨɣ ɫɢɫɬɟɦɭ ɥɢɧɟɣɧɵɯ ɚɥɝɟɛɪɚɢɱɟɫɤɢɯ ɭɪɚɜɧɟɧɢɣ, ɞɥɹ ɪɟɲɟɧɢɹ ɤɨɬɨ­ɪɨɣ ɪɟɤɨɦɟɧɞɭɸɬ ɦɟɬɨɞ ɩɨɫɥɟɞɨɜɚɬɟɥɶɧɨɝɨ ɢɫɤɥɸɱɟɧɢɹ Ƚɚɭɫɫɚ ɢɥɢ ɮɨɪɦɭɥɭ Ʉɪɚɦɟɪɚ. ɉɨɥɶɡɨɜɚɬɶɫɹ ɮɨɪɦɭɥɨɣ Ʉɪɚɦɟɪɚ ɢ ɦɟɬɨɞɨɦ Ƚɚɭɫɫɚ ɩɪɢ ɱɢɫɥɟ ɧɟɢɡɜɟɫɬɧɵɯ ɛɨɥɟɟ ɬɪɟɯ ɫɱɢɬɚɟɬɫɹ ɧɟɰɟɥɟɫɨɨɛɪɚɡɧɵɦ [7] ɢɡ-ɡɚ ɩɨɜɵɲɟɧɧɨɣ ɫɥɨɠɧɨɫɬɢ ɢ ɝɪɨɦɨɡɞɤɨɫɬɢ ɜɵɱɢɫɥɟɧɢɣ.
2. Ƚɪɚɮɢɱɟɫɤɢɟ ɦɟɬɨɞɵ ɪɚɫɱɟɬɚ ɲɢɯɬɵ ɨɫɧɨɜɚɧɵ ɧɚ ɪɟɲɟɧɢɢ ɫɢ-
ɫɬɟɦɵ
ɥɢɧɟɣɧɵɯ ɭɪɚɜɧɟɧɢɣ ɜɢɞɚ (4.9) – (4.11) ɢɥɢ (4.12) – (4.14) ɩɭɬɟɦ ɝɪɚɮɢɱɟɫɤɢɯ ɩɨɫɬɪɨɟɧɢɣ. ɗɬɢ ɦɟɬɨɞɵ ɪɚɫɱɟɬɚ ɨɬɥɢɱɚɸɬɫɹ ɛɨɥɶɲɨɣ ɩɪɨ­ɫɬɨɬɨɣ. Ʉ ɢɯ ɧɟɞɨɫɬɚɬɤɚɦ ɫɥɟɞɭɟɬ ɨɬɧɟɫɬɢ: ɧɟɜɨɡɦɨɠɧɨɫɬɶ ɢɥɢ ɫɥɨɠ­ɧɨɫɬɶ ɨɩɪɟɞɟɥɟɧɢɹ ɫɨɫɬɚɜɚ ɲɢɯɬɵ ɩɪɢ ɛɨɥɶɲɨɦ ɱɢɫɥɟ ɪɚɫɱɟɬɧɵɯ ɷɥɟ­ɦɟɧɬɨɜ ɢ ɫɨɫɬɚɜɥɹɸɳɢɯ, ɫɪɚɜɧɢɬɟɥɶɧɨ ɧɢɡɤɭɸ ɬɨɱɧɨɫɬɶ ɜɵɱɢɫɥɟɧɢɣ, ɨɛɭɫɥɨɜɥɟɧɧɭɸ ɢɡɦɟɪɟɧɢɟɦ ɨɬɪɟɡɤɨɜ.
3. Ɋɚɫɱɟɬ ɲɢɯɬɵ ɦɟɬɨɞɨɦ ɩɨɞɛɨɪɚ ɨɫɧɨɜɚɧ ɧɚ ɩɪɟɞɜɚɪɢɬɟɥɶɧɨɦ ɜɵ-
ɛɨɪɟ
ɟɟ ɛɚɡɨɜɨɝɨ ɫɨɫɬɚɜɚ, ɩɪɨɜɟɪɤɟ ɦɚɬɟɪɢɚɥɶɧɨɝɨ ɛɚɥɚɧɫɚ ɩɨ ɪɚɫɱɟɬɧɵɦ ɷɥɟɦɟɧɬɚɦ ɢ ɧɚ ɩɨɫɥɟɞɭɸɳɟɣ ɤɨɦɩɟɧɫɚɰɢɢ ɧɟɞɨɫɬɚɸɳɢɯ ɷɥɟɦɟɧɬɨɜ ɞɨ­ɛɚɜɤɚɦɢ ɮɟɪɪɨɫɩɥɚɜɨɜ, ɱɢɫɬɵɯ ɦɟɬɚɥɥɨɜ, ɧɟ ɜɯɨɞɹɳɢɯ ɜ ɛɚɡɨɜɭɸ ɲɢɯɬɭ.
Ʉɚɤɢɟ-ɥɢɛɨ ɱɟɬɤɨ ɫɮɨɪɦɭɥɢɪɨɜɚɧɧɵɟ ɩɪɢɧɰɢɩɵ ɜɵɛɨɪɚ ɛɚɡɨɜɨɝɨ ɫɨɫɬɚɜɚ ɲɢɯɬɵ ɨɬɫɭɬɫɬɜɭɸɬ. ȿɝɨ ɜɵɛɢɪɚɸɬ ɷɦɩɢɪɢɱɟɫɤɢ, ɢɫɯɨɞɹ ɢɡ ɧɚɤɨɩɥɟɧɧɨɝɨ ɨɩɵɬɚ ɫɨɫɬɚɜɥɟɧɢɹ ɲɢɯɬɵ. Ⱦɥɹ ɷɬɨɝɨ ɢɫɩɨɥɶɡɭɸɬ ɢɧɮɨɪ­ɦɚɰɢɸ ɨ ɩɪɢɦɟɪɧɨɦ
ɫɨɫɬɚɜɟ ɲɢɯɬɵ ɩɪɢ ɜɵɩɥɚɜɤɟ ɫɩɥɚɜɨɜ, ɛɥɢɡɤɢɯ ɩɨ ɫɨɫɬɚɜɭ ɤ ɡɚɞɚɧɧɨɦɭ, ɨɩɪɟɞɟɥɹɸɬ ɩɟɪɟɱɟɧɶ ɲɢɯɬɨɜɵɯ ɦɚɬɟɪɢɚɥɨɜ ɞɥɹ ɛɚɡɨɜɨɣ ɲɢɯɬɵ ɢ ɡɚɞɚɸɬɫɹ ɪɚɫɯɨɞɨɦ ɨɬɞɟɥɶɧɵɯ ɤɨɦɩɨɧɟɧɬɨɜ (ɜɨɡɜɪɚɬɚ, ɫɬɪɭɠɤɢ ɢ ɬɚɤ ɞɚɥɟɟ). ɗɬɚ ɡɚɞɚɱɚ ɭɩɪɨɳɚɟɬɫɹ, ɟɫɥɢ ɛɚɡɨɜɚɹ ɲɢɯɬɚ ɪɚɫ­ɫɱɢɬɵɜɚɟɬɫɹ ɩɨ ɨɞɧɨɦɭ-ɞɜɭɦ ɨɫɧɨɜɧɵɦ ɷɥɟɦɟɧɬɚɦ ɫɩɥɚɜɚ, ɨɛɵɱɧɨ ɩɨ ɭɝɥɟɪɨɞɭ ɢɥɢ ɭɝɥɟɪɨɞɭ ɢ ɨɫɧɨɜɧɨɦɭ ɥɟɝɢɪɭɸɳɟɦɭ ɷɥɟɦɟɧɬɭ,
ɫ ɩɨɦɨɳɶɸ ɚɧɚɥɢɬɢɱɟɫɤɢɯ ɭɪɚɜɧɟɧɢɣ ɬɢɩɚ (4.9) – (4.11) ɢɥɢ (4.12) – (4.14). ɉɨɫɥɟ ɜɵɛɨɪɚ ɧɚɱɚɥɶɧɨɝɨ ɜɚɪɢɚɧɬɚ ɛɚɡɨɜɨɝɨ ɫɨɫɬɚɜɚ ɲɢɯɬɵ ɩɪɨɜɟɪɹɸɬ ɦɚɬɟ­ɪɢɚɥɶɧɵɣ ɛɚɥɚɧɫ ɩɨ ɜɫɟɦ ɪɚɫɱɟɬɧɵɦ ɷɥɟɦɟɧɬɚɦ ɫ ɭɱɟɬɨɦ ɬɟɯɧɢɱɟɫɤɨɣ ɫɯɟɦɵ ɩɥɚɜɤɢ ɫɬɚɥɢ. ȿɫɥɢ ɫɨɞɟɪɠɚɧɢɟ ɪɚɫɱɟɬɧɵɯ ɷɥɟɦɟɧɬɨɜ ɦɟɧɶɲɟ ɞɨ­ɩɭɫɬɢɦɨɝɨ, ɬɨ ɨɩɪɟɞɟɥɹɸɬ ɤɨɥɢɱɟɫɬɜɨ ɞɨɛɚɜɨɤ ɩɨ ɮɨɪɦɭɥɟ
ɂ
ɞɨɛ
= ((Ɇɲ Ʉɲ) / Ʉ
ɲ
ɞɨɛ
) ((ɗ
ɪɚɫɱ
iɠ
í ɗ
ɢɫɯ
iɠ
) / (ɗ
ɞɨɛ
Ʉɷi)), (4.15)
iɲ
ɝɞɟ Ɇ
Ʉ Ʉ
– ɪɚɫɱɟɬɧɨɟ ɤɨɥɢɱɟɫɬɜɨ ɲɢɯɬɵ, ɤɝ;
ɲ
– ɤɨɷɮɮɢɰɢɟɧɬ ɜɵɯɨɞɚ ɠɢɞɤɨɝɨ ɦɟɬɚɥɥɚ ɢɡ ɜɫɟɣ ɲɢɯɬɵ;
ɲ
– ɤɨɷɮɮɢɰɢɟɧɬ ɜɵɯɨɞɚ ɠɢɞɤɨɝɨ ɦɟɬɚɥɥɚ ɢɡ ɞɨɛɚɜɤɢ.
ɞɨɛ
22
ɉɪɢ ɭɩɪɨɳɟɧɧɵɯ ɪɚɫɱɟɬɚɯ ɩɪɢɧɢɦɚɸɬ Ʉ
ɞɨɛ
ɧɢɟ ɪɚɫɱɟɬɧɨɝɨ ɷɥɟɦɟɧɬɚ ɜ ɝɨɬɨɜɨɦ ɫɩɥɚɜɟ,ௗ%; ɗ
= 1; ɗ
ɢɫɯ
iɠ
ɪɚɫɱ
– ɫɨɞɟɪɠɚ-
iɠ
– ɫɨɞɟɪɠɚɧɢɟ ɪɚɫ-
ɱɟɬɧɨɝɨ ɷɥɟɦɟɧɬɚ ɜ ɫɩɥɚɜɟ ɞɨ ɜɜɟɞɟɧɢɹ ɞɨɛɚɜɨɤ, ɩɪɢɜɟɞɟɧɧɨɟ ɤ ɦɚɫɫɟ ɝɨ­ɬɨɜɨɝɨ ɫɩɥɚɜɚ,ௗ%; ɗ ɢɡ ɞɨɛɚɜɨɤ,ௗ%; Ʉ
ɞɨɛ
– ɫɨɞɟɪɠɚɧɢɟ ɪɚɫɱɟɬɧɨɝɨ ɷɥɟɦɟɧɬɚ, ɭɫɜɚɢɜɚɟɦɨɟ
iɲ
– ɤɨɷɮɮɢɰɢɟɧɬ ɭɫɜɨɟɧɢɹ ɪɚɫɱɟɬɧɨɝɨ ɷɥɟɦɟɧɬɚ ɢɡ ɞɨ-
ɷi
ɛɚɜɤɢ.
ȿɫɥɢ ɠɟ ɫɨɞɟɪɠɚɧɢɟ ɯɨɬɹ ɛɵ ɨɞɧɨɝɨ ɪɚɫɱɟɬɧɨɝɨ ɷɥɟɦɟɧɬɚ ɛɭɞɟɬ ɛɨɥɶɲɟ ɞɨɩɭɫɬɢɦɨɝɨ ɜ ɝɨɬɨɜɨɦ ɫɩɥɚɜɟ, ɬɨ ɜɵɛɢɪɚɸɬ ɧɨɜɵɣ ɜɚɪɢɚɧɬ ɛɚ­ɡɨɜɨɝɨ ɫɨɫɬɚɜɚ ɲɢɯɬɵ ɢɡ ɧɨɜɵɯ ɲɢɯɬɨɜɵɯ ɦɚɬɟɪɢɚɥɨɜ. Ɂɚɬɟɦ ɜɧɨɜɶ ɩɪɨ­ɜɟɪɹɸɬ ɦɚɬɟɪɢɚɥɶɧɵɣ ɛɚɥɚɧɫ ɲɢɯɬɵ ɫ ɪɚɫɱɟɬɨɦ ɞɨɛɚɜɨɤ.
4. Ɋɚɫɱɟɬ ɲɢɯɬɵ ɤɚɤ ɡɚɞɚɱɚ ɥɢɧɟɣɧɨɝɨ ɩɪɨɝɪɚɦɦɢɪɨɜɚɧɢɹ. Ɂɚɞɚɱɚ ɜ ɤɨɬɨɪɨɣ ɨɬɵɫɤɢɜɚɟɬɫɹ ɷɤɫɬɪɟɦɭɦ ɮɭɧɤɰɢɣ ɜɨ ɦɧɨɠɟɫɬɜɟ, ɨɬɧɨɫɢɬɫɹ ɤ ɡɚɞɚɱɚɦ ɥɢɧɟɣɧɨɝɨ ɩɪɨɝɪɚɦɦɢɪɨɜɚɧɢɹ [8].
ȼ ɨɛɳɟɣ ɡɚɞɚɱɟ ɥɢɧɟɣɧɨɝɨ ɩɪɨɝɪɚɦɦɢɪɨɜɚɧɢɹ ɨɩɪɟɞɟɥɹɸɬ ɡɧɚɱɟ-
ɧɢɹ ɩɟɪɟɦɟɧɧɵɯ ɏ
, ɏ2, …, ɏn, ɤɨɬɨɪɵɟ ɨɛɟɫɩɟɱɢɜɚɸɬ ɦɢɧɢɦɭɦ (ɢɥɢ
1
ɦɚɤɫɢɦɭɦ) ɰɟɥɟɜɨɣ ɮɭɧɤɰɢɢ
,
F
= O1ɏ1 + O2ɏ2 + … + Ojɏj + Onɏn (4.16)
min
ɢ ɨɞɧɨɜɪɟɦɟɧɧɨ ɭɞɨɜɥɟɬɜɨɪɹɸɬ ɫɥɟɞɭɸɳɢɦ ɭɫɥɨɜɢɹɦ-ɨɝɪɚɧɢɱɟɧɢɹɦ:
n
ɚɜ
ɝɞɟ O
, ɚij, ɜj – ɢɡɜɟɫɬɧɵɟ ɩɨɫɬɨɹɧɧɵɟ, j = 1,2…n; m t n.
j
t
¦
ij
jj
1
j
j
,ɏ ; ɏ 0
(4.17)
ȼ ɨɛɳɟɣ ɡɚɞɚɱɟ ɥɢɧɟɣɧɨɝɨ ɩɪɨɝɪɚɦɦɢɪɨɜɚɧɢɹ ɭɫɥɨɜɢɹ (4.17) ɩɨɥ­ɧɨɫɬɶɸ ɫɨɜɩɚɞɚɸɬ ɫ ɫɢɫɬɟɦɨɣ ɛɚɥɚɧɫɨɜɵɯ ɭɪɚɜɧɟɧɢɣ, (4.1), (4.6) – (4.8), ɤɨɬɨɪɵɟ ɹɜɥɹɸɬɫɹ ɦɚɬɟɦɚɬɢɱɟɫɤɨɣ ɦɨɞɟɥɶɸ ɡɚɞɚɱɢ ɪɚɫɱɟɬɚ ɲɢɯɬɵ. ȿɫɥɢ ɫɢɫɬɟɦɚ, ɫɨɫɬɚɜɥɟɧɧɚɹ ɢɡ ɭɫɥɨɜɢɣ (4.1), (4.6) – (4.8), ɞɚɟɬ ɥɢɲɶ ɞɨɩɭɫɬɢ­ɦɵɟ ɪɟɲɟɧɢɹ, ɬɨ ɫɢɫɬɟɦɚ, ɫɨɫɬɚɜɥɟɧɧɚɹ ɢɡ ɭɪɚɜɧɟɧɢɣ (4.16), (4.17), ɩɨɡ­ɜɨɥɹɟɬ ɩɨɥɭɱɢɬɶ ɨɩɬɢɦɚɥɶɧɨɟ ɪɟɲɟɧɢɟ.
Ɍɚɤɢɦ ɨɛɪɚɡɨɦ, ɪɚɫɱɟɬ
ɨɩɬɢɦɚɥɶɧɨɝɨ ɫɨɫɬɚɜɚ ɲɢɯɬɵ ɪɚɜɧɨɫɢɥɟɧ ɪɟɲɟɧɢɸ ɡɚɞɚɱɢ ɥɢɧɟɣɧɨɝɨ ɩɪɨɝɪɚɦɦɢɪɨɜɚɧɢɹ, ɜ ɤɨɬɨɪɨɣ ɰɟɥɟɜɚɹ ɮɭɧɤ­ɰɢɹ ɹɜɥɹɟɬɫɹ ɮɭɧɤɰɢɟɣ ɨɩɬɢɦɢɡɚɰɢɢ.
O
ɉɪɢɞɚɜɚɹ ɩɨɫɬɨɹɧɧɵɦ ɰɟɥɟɜɨɣ ɮɭɧɤɰɢɢ
ɪɚɡɥɢɱɧɵɣ ɫɦɵɫɥ, ɦɨɠ-
j
ɧɨ ɩɨɥɭɱɢɬɶ ɪɟɲɟɧɢɹ, ɭɞɨɜɥɟɬɜɨɪɹɸɳɢɟ ɬɟɦ ɢɥɢ ɢɧɵɦ ɡɚɞɚɱɚɦ. ɇɚɢɛɨ­ɥɟɟ ɱɚɫɬɨ ɰɟɥɟɜɭɸ ɮɭɧɤɰɢɸ ɢɫɩɨɥɶɡɭɸɬ ɞɥɹ ɦɢɧɢɦɢɡɚɰɢɢ ɡɚɬɪɚɬ ɧɚ ɦɚ­ɬɟɪɢɚɥɵ [9; 10].
23
ɉɪɢ ɪɚɫɱɟɬɟ ɲɢɯɬɵ ɞɜɭɫɬɨɪɨɧɧɢɟ ɧɟɪɚɜɟɧɫɬɜɚ ɩɪɟɨɛɪɚɡɭɸɬ ɤ ɞɜɭɦ
j
ɨɞɧɨɫɬɨɪɨɧɧɢɦ ɢ ɩɪɢɜɨɞɹɬ ɤ ɤɚɧɨɧɢɱɟɫɤɨɣ ɮɨɪɦɟ ɜɜɟɞɟɧɢɟɦ ɞɨɩɨɥɧɢ­ɬɟɥɶɧɵɯ ɩɟɪɟɦɟɧɧɵɯ ɏ
. Ɂɧɚɤ ɩɨɫɥɟɞɧɢɯ ɜɵɛɢɪɚɟɬɫɹ ɜ ɡɚɜɢɫɢɦɨɫɬɢ ɨɬ
ɤ
ɯɚɪɚɤɬɟɪɚ ɧɟɪɚɜɟɧɫɬɜɚ.
ɇɚɩɪɢɦɟɪ, ɞɥɹ ɧɟɪɚɜɟɧɫɬɜɚ (4.1) ɩɨɥɭɱɚɟɦ:
n
ɗɗ

¦
ij j
ɠɠɤ
1
j
ɜ
;ɏɏ
(4.18)
ɠ
i
n
ɏɏ .
ɗɗ

¦
ij j
ɠɠɤ1 ɠ
1
j
ɧ
i
ɉɪɢ ɷɬɨɦ Ʉ > n, ɝɞɟ n – ɱɢɫɥɨ ɨɫɧɨɜɧɵɯ ɩɟɪɟɦɟɧɧɵɯ.
Ⱦɨɩɨɥɧɢɬɟɥɶɧɵɟ ɩɟɪɟɦɟɧɧɵɟ ɜɯɨɞɹɬ ɜ ɰɟɥɟɜɭɸ ɮɭɧɤɰɢɸ ɫ ɧɭɥɟ­ɜɵɦ ɤɨɷɮɮɢɰɢɟɧɬɨɦ. Ⱦɥɹ ɪɟɲɟɧɢɹ ɡɚɞɚɱɢ ɢɫɩɨɥɶɡɭɸɬ ɭɧɢɜɟɪɫɚɥɶɧɵɣ ɫɢɦɩɥɟɤɫɧɵɣ ɦɟɬɨɞ. ɉɨ ɷɬɨɦɭ ɦɟɬɨɞɭ ɨɩɬɢɦɚɥɶɧɨɟ ɪɟɲɟɧɢɟ ɨɩɪɟɞɟɥɹ­ɸɬ ɦɟɬɨɞɨɦ ɩɨɫɥɟɞɨɜɚɬɟɥɶɧɨɝɨ ɦɧɨɝɨɲɚɝɨɜɨɝɨ ɩɪɢɛɥɢɠɟɧɢɹ.
ɋɧɚɱɚɥɚ ɧɚɯɨɞɹɬ ɨɞɧɨ ɢɡ ɪɟɲɟɧɢɣ, ɤɨɬɨɪɨɟ ɩɪɢɧɢɦɚɸɬ ɡɚ ɛɚɡɢɫ­ɧɨɟ. Ɂɚɬɟɦ ɩɪɢ ɩɨɦɨɳɢ
ɤɪɢɬɟɪɢɹ ɨɩɬɢɦɚɥɶɧɨɫɬɢ ɭɫɬɚɧɚɜɥɢɜɚɸɬ, ɩɨɥɭ­ɱɟɧɨ ɥɢ ɨɩɬɢɦɚɥɶɧɨɟ ɪɟɲɟɧɢɟ. ɉɪɢ ɷɬɨɦ ɩɟɪɟɯɨɞ ɨɬ ɨɞɧɨɝɨ ɛɚɡɢɫɧɨɝɨ ɪɟɲɟɧɢɹ ɤ ɞɪɭɝɨɦɭ ɫɨɜɟɪɲɚɟɬɫɹ ɧɟ ɩɪɨɢɡɜɨɥɶɧɨ, ɚ ɬɚɤ, ɱɬɨ ɩɪɢ ɤɚɠɞɨɦ ɢɡ ɧɢɯ ɡɧɚɱɟɧɢɟ ɰɟɥɟɜɨɣ ɮɭɧɤɰɢɢ ɭɦɟɧɶɲɚɟɬɫɹ. ɗɬɢ ɲɚɝɢ ɩɨɜɬɨɪɹɸɬ ɞɨ ɬɟɯ ɩɨɪ, ɩɨɤɚ ɧɟ ɛɭɞɟɬ ɧɚɣɞɟɧɨ ɨɩɬɢɦɚɥɶɧɨɟ ɪɟɲɟɧɢɟ.
ɑɬɨɛɵ ɭɩɪɨɫɬɢɬɶ ɧɚɯɨɠɞɟɧɢɟ ɩɟɪɜɨɝɨ ɪɟɲɟɧɢɹ ɩɪɢɛɟɝɚɸɬ ɤ ɫɨ ɡɞɚɧɢɸ ɢɡ ɤɨɷɮɮɢɰɢɟɧɬɨɜ ɧɟɢɡɜɟɫɬɧɵɯ ɟɞɢɧɢɱɧɨɣ ɦɚɬɪɢɰɵ ɪɚɡɦɟɪɧɨ­ɫɬɶɸ m m, ɝɞɟ m ɱɢɫɥɨ ɨɝɪɚɧɢɱɟɧɢɣ (4.17).
ɉɪɟɠɞɟ ɜɫɟɝɨ ɨɩɪɟɞɟɥɹɸɬ, ɫɨɞɟɪɠɢɬ ɥɢ ɦɚɬɪɢɰɚ, ɫɨɫɬɚɜɥɟɧɧɚɹ ɢɡ ɤɨ­ɷɮɮɢɰɢɟɧɬɨɜ ɚ
ɭɫɥɨɜɢɣ ɨɝɪɚɧɢɱɟɧɢɣ, ɟɞɢɧɢɱɧɭɸ ɦɚɬɪɢɰɭ (ɨɩɪɟɞɟɥɢɬɟɥɶ
ij
ɤɨɬɨɪɨɣ ɪɚɜɟɧ ɟɞɢɧɢɰɵ), ɬɨ ɟɫɬɶ ɦɨɠɧɨ ɥɢ ɩɟɪɟɫɬɚɧɨɜɤɨɣ ɫɬɪɨɤ ɢ ɫɬɨɥɛɰɨɜ ɦɚɬɪɢɰɵ ɭɫɥɨɜɢɣ ɩɨɥɭɱɢɬɶ ɟɞɢɧɢɱɧɭɸ ɦɚɬɪɢɰɭ ɧɟɨɛɯɨɞɢɦɨɣ ɪɚɡɦɟɪɧɨɫɬɢ.
ȿɫɥɢ ɢɫɯɨɞɧɚɹ ɦɚɬɪɢɰɚ ɧɟ ɫɨɞɟɪɠɢɬ ɟɞɢɧɢɱɧɭɸ ɦɚɬɪɢɰɭ, ɬɨ ɫɨ­ɫɬɚɜɥɹɸɬ ɢɫɤɭɫɫɬɜɟɧɧɵɣ ɛɚɡɢɫ. ȼ ɡɚɜɢɫɢɦɨɫɬɢ ɨɬ ɜɢɞɚ ɨɝɪɚɧɢɱɟɧɢɣ ɞɥɹ ɫɨɫɬɚɜɥɟɧɢɹ ɟɞɢɧɢɱɧɨɣ ɦɚɬɪɢɰɵ ɩɪɢɦɟɧɹɸɬ ɧɟɫɤɨɥɶɤɨ ɩɪɢɟɦɨɜ. ȿɫɥɢ ɨɝɪɚɧɢɱɟɧɢɹ ɢɦɟɸɬ
ɜɢɞ
n
ɚɜ

¦
ij j
1ɏj
,
-
24
ɬɨ ɩɪɢ ɩɪɟɨɛɪɚɡɨɜɚɧɢɢ ɧɟɪɚɜɟɧɫɬɜ ɜ ɪɚɜɟɧɫɬɜɚ, ɨɫɭɳɟɫɬɜɥɹɟɦɨɦ ɜɜɟɞɟ-
j
ɧɢɟɦ ɞɨɩɨɥɧɢɬɟɥɶɧɵɯ ɩɟɪɟɦɟɧɧɵɯ ɏ
, ɨɛɪɚɡɭɟɬɫɹ ɧɨɜɚɹ ɦɚɬɪɢɰɚ, ɫɨ-
ɤ
ɞɟɪɠɚɳɚɹ ɟɞɢɧɢɱɧɭɸ ɦɚɬɪɢɰɭ ɢɡ ɤɨɷɮɮɢɰɢɟɧɬɨɜ +1 ɩɪɢ ɧɨɜɵɯ ɩɟɪɟ­ɦɟɧɧɵɯ. ɉɪɢ ɷɬɨɦ ɩɟɪɜɨɟ ɛɚɡɢɫɧɨɟ ɪɟɲɟɧɢɟ ɩɨɥɭɱɚɟɬɫɹ ɩɪɢ ɏ ɬɨ ɟɫɬɶ ɩɪɢ ɡɧɚɱɟɧɢɹɯ ɏ
= ɜi.
ɤ
d h = 0,
j
ȼ ɫɥɭɱɚɟ, ɟɫɥɢ ɧɟɤɨɬɨɪɵɟ ɢɥɢ ɜɫɟ ɫɬɪɨɤɢ ɧɟ ɫɨɞɟɪɠɚɬ ɤɨɷɮɮɢɰɢ­ɟɧɬ +1, ɧɟɨɛɯɨɞɢɦɵɣ ɞɥɹ ɨɛɪɚɡɨɜɚɧɢɹ ɟɞɢɧɢɱɧɨɣ ɦɚɬɪɢɰɵ, ɬɨ ɩɪɢɛɟɝɚ­ɸɬ ɤ ɦɟɬɨɞɭ ɢɫɤɭɫɫɬɜɟɧɧɨɝɨ ɛɚɡɢɫɚ (Ɇ-ɦɟɬɨɞɭ).
ɉɪɢ ɨɝɪɚɧɢɱɟɧɢɹɯ ɜɢɞɚ
n
ɚɜ
!
¦
ij j j
1
j
ɜɜɨɞɹɬ ɞɨɩɨɥɧɢɬɟɥɶɧɵɟ ɩɟɪɟɦɟɧɧɵɟ ɏ
ɏ
ɞɥɹ ɩɨɥɭɱɟɧɢɹ ɪɚɜɟɧɫɬɜɚ
ɫ ɤɨɷɮɮɢɰɢɟɧɬɨɦ í1, ɤɨɬɨɪɵɟ
ɤ
ɧɟ ɦɨɝɭɬ ɨɛɪɚɡɨɜɵɜɚɬɶ ɟɞɢɧɢɱɧɭɸ ɦɚɬɪɢɰɭ. ȼ ɷɬɨɦ ɫɥɭɱɚɟ (ɬɚɤ ɠɟ, ɤɚɤ ɢ
n
ɚɜ
ɩɪɢ ɨɝɪɚɧɢɱɟɧɢɹɯ ɜɢɞɚ
¦
j
1
!
ij j j
ɛɚɜɥɹɸɬ ɢɫɤɭɫɫɬɜɟɧɧɵɟ ɩɟɪɟɦɟɧɧɵɟ ɏ
,ɏ
ɤ ɩɨɥɭɱɟɧɧɵɦ ɪɚɜɟɧɫɬɜɚɦ ɩɪɢ-
(t > Ʉ), ɱɬɨɛɵ ɩɨɥɭɱɢɬɶ ɟɞɢɧɢɱ-
t
ɧɭɸ ɦɚɬɪɢɰɭ. Ɍɨɝɞɚ ɰɟɥɟɜɚɹ ɮɭɧɤɰɢɹ ɩɪɢɧɢɦɚɟɬ ɜɢɞ:
n
ɏɏɏ,0
O   
1
j
¦¦¦
jt
Ɇ
ɤ
ɝɞɟ ɡɧɚɱɟɧɢɟ Ɇ ɩɪɟɞɩɨɥɚɝɚɟɬɫɹ ɞɨɫɬɚɬɨɱɧɨ ɛɨɥɶɲɢɦ ɩɨɥɨɠɢɬɟɥɶɧɵɦ ɱɢɫɥɨɦ (Ɇ t O
).
j
ɉɪɢɦɟɧɟɧɢɟ ɫɢɦɩɥɟɤɫɧɨɝɨ ɦɟɬɨɞɚ ɤ ɪɚɫɲɢɪɟɧɧɨɣ ɡɚɞɚɱɟ (ɫ ɢɫɤɭɫ­ɫɬɜɟɧɧɵɦɢ ɩɟɪɟɦɟɧɧɵɦɢ) ɨɛɟɫɩɟɱɢɜɚɟɬ ɬɚɤɨɟ ɪɟɲɟɧɢɟ, ɜ ɤɨɬɨɪɨɦ ɤɚɠ­ɞɨɟ ɢɡ ɢɫɤɭɫɫɬɜɟɧɧɵɯ ɩɟɪɟɦɟɧɧɵɯ ɏ
ɪɚɜɧɨ ɧɭɥɸ. ȼ ɩɪɨɰɟɫɫɟ ɪɟɲɟɧɢɹ
t
ɡɚɞɚɱɢ ɩɟɪɟɦɟɧɧɵɟ ɫ ɤɨɷɮɮɢɰɢɟɧɬɨɦ Ɇ ɩɨɫɥɟɞɨɜɚɬɟɥɶɧɨ ɜɵɜɨɞɹɬɫɹ ɢɡ ɛɚɡɢɫɚ, ɜ ɨɩɬɢɦɚɥɶɧɨɦ ɪɟɲɟɧɢɢ ɨɧɢ ɧɟ ɫɨɞɟɪɠɚɬɫɹ.
ȿɫɥɢ ɢɦɟɸɬɫɹ ɨɝɪɚɧɢɱɟɧɢɹ ɫɦɟɲɚɧɧɨɝɨ ɬɢɩɚ, ɬɨ ɟɞɢɧɢɱɧɭɸ ɦɚɬ­ɪɢɰɭ ɢ ɫɨɨɬɜɟɬɫɬɜɟɧɧɨ ɩɟɪɜɨɟ ɛɚɡɢɫɧɨɟ ɪɟɲɟɧɢɟ ɩɨɥɭɱɚɸɬ ɩɪɢɟɦɚɦɢ, ɨɩɢɫɚɧɧɵɦɢ ɜɵɲɟ.
ɉɨɫɥɟ ɩɪɢɜɟɞɟɧɢɹ ɡɚɞɚɱɢ ɤ ɤɚɧɨɧɢɱɟɫɤɨɣ ɮɨɪɦɟ ɢ ɩɨɥɭɱɟɧɢɹ ɟɞɢ­ɧɢɱɧɨɣ ɦɚɬɪɢɰɵ ɫɨɫɬɚɜɥɹɸɬ
ɫɢɦɩɥɟɤɫɧɭɸ ɬɚɛɥɢɰɭ ɢ ɩɪɢɫɬɭɩɚɸɬ ɤ ɪɟ-
ɲɟɧɢɸ.
ɉɪɨɰɟɞɭɪɚ ɪɟɲɟɧɢɹ ɡɚɞɚɱ ɥɢɧɟɣɧɨɝɨ ɩɪɨɝɪɚɦɦɢɪɨɜɚɧɢɹ ɫɢɦ­ɩɥɟɤɫɧɵɦ ɦɟɬɨɞɨɦ ɫɥɨɠɧɚ ɞɥɹ ɪɟɲɟɧɢɹ ɜɪɭɱɧɭɸ, ɬɚɤ ɤɚɤ ɧɟɨɛɯɨɞɢɦɨ ɜɵɩɨɥɧɢɬɶ ɛɨɥɶɲɨɣ ɨɛɴɟɦ ɚɪɢɮɦɟɬɢɱɟɫɤɢɯ ɢ ɥɨɝɢɱɟɫɤɢɯ ɨɩɟɪɚɰɢɣ ɩɪɢ
25
ɧɚɥɢɱɢɢ ɞɨ 30 ɩɟɪɟɦɟɧɧɵɯ ɢ ɞɨ 20 ɨɝɪɚɧɢɱɟɧɢɣ. ɇɨ ɚɥɝɨɪɢɬɦ ɫɢɦ-
4.3. ǵȘȕȈȌȔȔȕȘșȏ ȘȕȘșȇȉȒȌȔȏȦ ȟȏȜșȢ ȋȒȦ ȖȒȇȉȑȏ ȘșȇȒȏ
ɩɥɟɤɫɧɨɝɨ ɦɟɬɨɞɚ ɭɞɨɛɟɧ ɞɥɹ ɪɟɚɥɢɡɚɰɢɢ ɧɚ ɗȼɆ, ɩɨɫɤɨɥɶɤɭ ɫɨɫɬɨɢɬ, ɩɨ ɫɭɳɟɫɬɜɭ, ɢɡ ɨɞɧɨɝɨ ɰɢɤɥɚ. ɉɪɢ ɷɬɨɦ ɧɟɬ ɧɟɨɛɯɨɞɢɦɨɫɬɢ ɫɨɫɬɚɜɥɹɬɶ ɞɥɹ ɷɬɨɝɨ ɩɪɨɝɪɚɦɦɭ, ɬɚɤ ɤɚɤ ɜ ɜɵɱɢɫɥɢɬɟɥɶɧɵɯ ɰɟɧɬɪɚɯ ɢɦɟɸɬɫɹ ɧɚɛɨ­ɪɵ ɫɬɚɧɞɚɪɬɧɵɯ ɩɪɨɝɪɚɦɦ, ɜ ɬɨɦ ɱɢɫɥɟ ɢ ɫɬɚɧɞɚɪɬɧɵɟ ɩɪɨɝɪɚɦɦɵ ɪɟɲɟ­ɧɢɹ ɡɚɞɚɱ ɥɢɧɟɣɧɨɝɨ
ɩɪɨɝɪɚɦɦɢɪɨɜɚɧɢɹ.
Ɉɫɨɛɟɧɧɨɫɬɶ ɪɚɫɱɟɬɚ ɲɢɯɬɵ ɞɥɹ ɩɥɚɜɤɢ ɫɬɚɥɢ ɫɜɹɡɚɧɚ ɫ ɛɨɥɶɲɨɣ ɭɧɢɜɟɪɫɚɥɶɧɨɫɬɶɸ ɫɬɚɥɟɩɥɚɜɢɥɶɧɵɯ ɚɝɪɟɝɚɬɨɜ, ɦɧɨɝɨɨɛɪɚɡɢɟɦ ɦɟɬɨɞɨɜ ɩɥɚɜɤɢ ɢ ɲɢɪɨɤɢɦ ɞɢɚɩɚɡɨɧɨɦ ɢɡɦɟɧɟɧɢɹ ɮɢɡɢɤɨ-ɯɢɦɢɱɟɫɤɢɯ ɩɪɨɰɟɫ­ɫɨɜ ɜɨ ɜɪɟɦɹ ɩɥɚɜɤɢ. ɉɨɞɚɜɥɹɸɳɟɟ ɛɨɥɶɲɢɧɫɬɜɨ ɷɥɟɦɟɧɬɨɜ, ɜɯɨɞɹɳɢɯ ɜ ɫɨɫɬɚɜ ɫɬɚɥɢ, ɧɟɨɞɢɧɚɤɨɜɨ ɨɤɢɫɥɹɸɬɫɹ ɩɨ ɩɟɪɢɨɞɚɦ ɩɥɚɜɤɢ. ȼ ɩɟɪɢɨɞɵ ɩɥɚɜɥɟɧɢɹ ɢ ɨɤɢɫɥɟɧɢɹ ɷɬɢ ɷɥɟɦɟɧɬɵ ɜɵɝɨɪɚɸɬ ɫɢɥɶɧɟɟ, ɱɟɦ ɜ ɩɪɨɰɟɫɫɟ ɞɨɜɨɞɤɢ ɟɬ ɜ ɨɤɢɫɥɢɬɟɥɶɧɵɣ ɩɟɪɢɨɞ ɩɪɢ ɜɜɟɞɟɧɢɢ ɜ ɜɚɧɧɭ ɩɟɱɢ ɤɢɫɥɨɪɨɞɚ ɢɥɢ ɠɟɥɟɡɧɨɣ ɪɭɞɵ. Ʉɪɨɦɟ ɬɨɝɨ, ɩɪɨɞɨɥɠɢɬɟɥɶɧɨɫɬɶ ɨɬɞɟɥɶɧɵɯ ɩɟɪɢɨɞɨɜ ɩɥɚɜɤɢ, ɨɫɨɛɟɧɧɨ ɧɚɱɚɥɶɧɵɯ, ɦɨɠɟɬ ɡɧɚɱɢɬɟɥɶɧɨ ɤɨɥɟɛɚɬɶɫɹ ɜ ɡɚɜɢɫɢ­ɦɨɫɬɢ ɨɬ ɤɚɱɟɫɬɜɚ ɲɢɯɬɨɜɵɯ ɦɚɬɟɪɢɚɥɨɜ ɢ ɨɬ ɬɟɯɧɨɥɨɝɢɢ ɩɥɚɜɤɢ. Ȼɨɥɶ­ɲɨɟ ɡɧɚɱɟɧɢɟ ɢɦɟɟɬ ɢ ɚɛɫɨɥɸɬɧɨɟ ɫɨɞɟɪɠɚɧɢɟ ɷɥɟɦɟɧɬɨɜ ɨɛɪɚɡɨɦ, ɞɚɠɟ ɩɪɢ ɩɥɚɜɤɟ ɫɬɚɥɢ ɜ ɨɞɧɨɣ ɢ ɬɨɣ ɠɟ ɩɟɱɢ ɦɨɝɭɬ ɛɵɬɶ ɪɚɡ­ɥɢɱɧɵɟ ɬɟɯɧɨɥɨɝɢɱɟɫɤɢɟ ɜɚɪɢɚɧɬɵ, ɢ ɭɝɚɪ ɷɥɟɦɟɧɬɨɜ ɦɨɠɟɬ ɢɡɦɟɧɹɬɶɫɹ ɜ ɲɢɪɨɤɢɯ ɩɪɟɞɟɥɚɯ. ȼ ɷɬɢɯ ɭɫɥɨɜɢɹɯ ɫɪɟɞɧɟɟ ɡɧɚɱɟɧɢɟ ɭɝɚɪɚ ɷɥɟɦɟɧɬɨɜ ɹɜɥɹɟɬɫɹ ɬɪɭɞɧɨɭɫɬɚɧɨɜɢɦɨɣ ɢ ɩɪɢɛɥɢɠɟɧɧɨɣ ɯɚɪɚɤɬɟɪɢɫɬɢɤɨɣ ɩɨɜɟɞɟ­ɧɢɹ ɷɥɟɦɟɧɬɨɜ ɜ ɩɪɨɰɟɫɫɟ ɩɥɚɜɤɢ. Ɋɚɫɫɱɢɬɵɜɚɬɶ ɟɟ ɩɨ ɤɨɷɮɮɢɰɢɟɧɬɭ ɭɫɜɨɟɧɢɹ ɤɚɤ ɧɟ ɢɡɜɟɫɬɧɵ ɨɬɧɨɫɢɬɟɥɶɧɵɟ ɤɨɥɢɱɟɫɬɜɚ ɫɨɫɬɚɜɥɹɸɳɢɯ ɲɢɯɬɵ (ɷɬɨ ɹɜɥɹɟɬɫɹ ɰɟɥɶɸ ɪɚɫɱɟɬɚ).
ɩɟɪɢɨɞɵ ɩɥɚɜɤɢ, ɢ ɷɥɟɦɟɧɬɵ ɜ ɧɢɯ ɭɫɜɚɢɜɚɸɬɫɹ ɧɟɨɞɢɧɚɤɨɜɨ. ɉɨɷɬɨɦɭ ɩɪɢ ɪɚɫɱɟɬɟ ɲɢɯɬɵ ɭɫɬɚɧɚɜɥɢɜɚɟɬɫɹ ɭɝɚɪ ɷɥɟɦɟɧɬɨɜ ɢɡ ɨɬɞɟɥɶɧɵɯ ɫɨ­ɫɬɚɜɥɹɸɳɢɯ ɲɢɯɬɵ, ɢ ɨɩɪɟɞɟɥɹɸɬɫɹ ɢɯ ɲɢɯɬɨɜɵɯ ɦɚɬɟɪɢɚɥɨɜ ɩɟɪɟɫɱɢɬɵɜɚɟɬɫɹ ɧɚ ɭɫɜɚɢɜɚɟɦɨɟ ɠɢɞɤɨɣ ɫɬɚɥɶɸ ɫɨɞɟɪɠɚɧɢɟ ɷɥɟɦɟɧɬɨɜ. ɉɨɞɛɨɪɨɦ ɲɢɯɬɨɜɵɯ ɦɚɬɟɪɢɚɥɨɜ ɫ ɩɪɢɜɟɞɟɧɧɵɦ
ɢ ɪɚɫɤɢɫɥɟɧɢɹ. ɂɧɬɟɧɫɢɜɧɨɫɬɶ ɭɝɚɪɚ ɷɥɟɦɟɧɬɨɜ ɪɟɡɤɨ ɜɨɡɪɚɫɬɚ-
ɜ ɫɬɚɥɢ. Ɍɚɤɢɦ
ɷɥɟɦɟɧɬɨɜ ɢɡ ɲɢɯɬɨɜɵɯ ɦɚɬɟɪɢɚɥɨɜ, ɫɬɪɨɝɨ ɝɨɜɨɪɹ, ɧɟɥɶɡɹ, ɬɚɤ
ɉɪɢ ɩɥɚɜɤɟ ɫɬɚɥɢ ɲɢɯɬɨɜɵɟ ɦɚɬɟɪɢɚɥɵ ɡɚɝɪɭɠɚɸɬɫɹ ɜ ɪɚɡɥɢɱɧɵɟ
ɤɨɷɮɮɢɰɢɟɧɬɵ ɭɫɜɨɟɧɢɹ. ɋɨɫɬɚɜ
26
ɫɨɞɟɪɠɚɧɢɟɦ ɷɥɟɦɟɧɬɨɜ ɨɛɟɫɩɟɱɢɜɚɟɬɫɹ ɡɚɞɚɧɧɨɟ ɫɨɞɟɪɠɚɧɢɟ ɷɥɟɦɟɧɬɨɜ ɜ ɠɢɞɤɨɣ ɫɬɚɥɢ.
ɉɪɢ ɩɥɚɜɤɟ ɫɬɚɥɢ, ɤɚɤ ɩɪɚɜɢɥɨ, ɜ ɡɚɜɚɥɤɭ ɞɚɸɬ ɥɢɲɶ ɜɬɨɪɢɱɧɵɟ ɦɟɬɚɥɥɵ ɢ ɤɚɪɛɸɪɢɡɚɬɨɪɵ (ɢɧɨɝɞɚ ɦɟɞɶ, ɧɢɤɟɥɶ).
ȼɫɟ ɨɫɬɚɥɶɧɵɟ ɮɟɪɪɨɫɩɥɚɜɵ ɢ ɥɟɝɢɪɭɸɳɢɟ ɩɪɢɫɚɞɤɢ ɜɜɨɞɹɬ ɜ ɠɢɞ­ɤɢɣ ɦɟɬɚɥɥ ɜ ɤɨɧɰɟ ɩɥɚɜɤɢ. ɉɨɷɬɨɦɭ ɩɪɟɞɫɬɚɜɥɹɟɬɫɹ ɰɟɥɟɫɨɨɛɪɚɡɧɵɦ ɜɫɟ ɲɢɯɬɨɜɵɟ ɦɚɬɟɪɢɚɥɵ, ɩɪɢɦɟɧɹɟɦɵɟ ɞɥɹ ɩɥɚɜɤɢ ɫɬɚɥɢ, ɭɫɥɨɜɧɨ ɪɚɡ ɞɟɥɢɬɶ ɧɚ ɞɜɟ ɝɪɭɩɩɵ.
ɉɟɪɜɚɹ ɝɪɭɩɩɚ – ɨɬɯɨɞɵ, ɤ ɤɨɬɨɪɵɦ ɨɬɧɨɫɹɬɫɹ ɜɫɟ ɦɚɬɟɪɢɚɥɵ, ɜɜɨɞɢɦɵɟ ɜ ɡɚɜɚɥɤɭ. ɗɬɨ ɨɛɵɱɧɨ ɜɨɡɜɪɚɬ ɫɨɛɫɬɜɟɧɧɨɝɨ ɩɪɨɢɡɜɨɞɫɬɜɚ, ɥɨɦ ɭɝɥɟɪɨɞɢɫɬɨɣ ɢ ɥɟɝɢɪɨɜɚɧɧɨɣ ɫɬɚɥɟɣ, ɤɚɪɛɸɪɢɡɚɬɨɪɵ. Ɉɧɢ ɩɨɞɜɟɪ­ɝɚɸɬɫɹ ɛɨɥɶɲɨɦɭ ɨɤɢɫɥɟɧɢɸ, ɢ ɩɨɷɬɨɦɭ ɷɥɟɦɟɧɬɵ ɢɡ ɨɬɯɨɞɨɜ ɭɫɜɚɢɜɚ­ɸɬɫɹ ɜ ɦɟɧɶɲɟɣ ɫɬɟɩɟɧɢ.
ȼɬɨɪɚɹ ɝɪɭɩɩɚ – ɮɟɪɪɨɫɩɥɚɜɵ, ɤ ɤɨɬɨɪɵɦ ɨɬɧɨɫɹɬɫɹ ɫɨɛɫɬɜɟɧɧɨ ɮɟɪɪɨɫɩɥɚɜɵ ɢ
ɞɪɭɝɢɟ ɩɪɢɫɚɞɤɢ, ɩɪɢɦɟɧɹɟɦɵɟ ɞɥɹ ɤɨɪɪɟɤɬɢɪɨɜɤɢ ɯɢ­ɦɢɱɟɫɤɨɝɨ ɫɨɫɬɚɜɚ, ɥɟɝɢɪɨɜɚɧɢɹ, ɪɚɫɤɢɫɥɟɧɢɹ. ɂɯ ɜɜɨɞɹɬ ɜ ɩɟɱɶ ɜ ɤɨɧɰɟ ɩɥɚɜɤɢ, ɢ ɨɧɢ ɭɫɜɚɢɜɚɸɬɫɹ ɡɧɚɱɢɬɟɥɶɧɨ ɥɭɱɲɟ.
ɉɪɚɤɬɢɤɨɣ ɭɫɬɚɧɨɜɥɟɧɵ ɤɨɷɮɮɢɰɢɟɧɬɵ ɭɫɜɨɟɧɢɹ ɷɥɟɦɟɧɬɨɜ ɢɡ ɲɢɯɬɨɜɵɯ ɦɚɬɟɪɢɚɥɨɜ, ɜ ɡɚɜɢɫɢɦɨɫɬɢ ɨɬ ɢɯ ɚɛɫɨɥɸɬɧɨɝɨ ɫɨɞɟɪɠɚɧɢɹ ɜ ɫɬɚɥɢ, ɬɢɩɚ ɩɥɚɜɢɥɶɧɨɝɨ ɚɝɪɟɝɚɬɚ ɢ ɬɟɯɧɨɥɨɝɢɢ ɩɥɚɜɤɢ (ɬɚɛɥ. 4.1, 4.2).
Ɍɚɛɥɢɰɚ 4.1
Ʉɨɷɮɮɢɰɢɟɧɬɵ ɭɫɜɨɟɧɢɹ ɷɥɟɦɟɧɬɨɜ ɢɡ
ɨɬɯɨɞɨɜ (ɥɨɦɚ)
ɢ ɮɟɪɪɨɫɩɥɚɜɨɜ ɩɪɢ ɜɵɩɥɚɜɤɟ ɫɬɚɥɢ ɜ ɷɥɟɤɬɪɨɞɭɝɨɜɵɯ ɩɟɱɚɯ
Ʌɟɝɢɪɭ-
ɸɳɢɣ
ɷɥɟɦɟɧɬ
1 2 3 4 5 6 7 ɋ – */0,9 – */0,9 – 1,00
Si – 0/0,6 – 0/0,6 3 0,90
Mn 5 0,3/0,8*
S – 0,9 – 0,9 – 1,00
Ɋ – 0,3-0,5 – 0,3-0,5 – 0,80
ɋr 3 0,8-0,85 3 0,8-0,85 3 0,95
Ni 10 0,97 10 0,95 – 0,97
ɋɨɞɟɪ-
ɠɚɧɢɟ ɧɟ
ɛɨɥɟɟ,ௗ%
Ɉɬɯɨɞɵ (ɥɨɦ) Ɏɟɪɪɨɫɩɥɚɜɵ
Ʉɨɷɮɮɢ-
ɰɢɟɧɬ
ɭɫɜɨɟɧɢɹ
ɋɨɞɟɪ-
ɠɚɧɢɟ
ɛɨɥɟɟ,ௗ%
5 0,7/0,9 5 0,95
Ʉɨɷɮɮɢ-
ɰɢɟɧɬ
ɭɫɜɨɟɧɢɹ
ɋɨɞɟɪ-
ɠɚɧɢɟ
ɛɨɥɟɟ,ௗ%
Ʉɨɷɮɮɢ-
ɰɢɟɧɬ
ɭɫɜɨɟɧɢɹ
-
27
Ɉɤɨɧɱɚɧɢɟ ɬɚɛɥɢɰɵ 4.1
Ʌɟɝɢɪɭ-
ɸɳɢɣ
ɷɥɟɦɟɧɬ
1 2 3 4 5 6 7
Cu – 0,95 – 0,95 – 0,97
Al – 0 – 0 – 0,75 Ti – 0/0,10 – 0/0,10 1 0,50 W 3 0,90 3 0,90 – 0,95
V 0,7 0,20/0,50 0,7 0,5/0,85 – 0,90 Mo – 0,95 – 0,95 – 0,97 Co – 0,95 – 0,95 – 0,97
* ȼ ɱɢɫɥɢɬɟɥɟ ɤɨɷɮɮɢɰɢɟɧɬ ɭɫɜɨɟɧɢɹ ɥɟɝɢɪɭɸɳɢɯ ɷɥɟɦɟɧɬɨɜ ɩɪɢ ɜɵɩɥɚɜɤɟ
ɫɬɚɥɢ ɫ ɩɪɢɦɟɧɟɧɢɟɦ ɤɢɫɥɨɪɨɞɚ (ɫ ɩɨɥɧɵɦ ɨɤɢɫɥɟɧɢɟɦ), ɜ ɡɧɚɦɟɧɚɬɟɥɟ ɛɟɡ ɨɤɢɫɥɟɧɢɹ (ɩɟɪɟɩɥɚɜɨɦ)
ɋɨɞɟɪ-
ɠɚɧɢɟ ɧɟ
ɛɨɥɟɟ,ௗ%
Ɉɬɯɨɞɵ (ɥɨɦ) Ɏɟɪɪɨɫɩɥɚɜɵ
Ʉɨɷɮɮɢ-
ɰɢɟɧɬ
ɭɫɜɨɟɧɢɹ
ɋɨɞɟɪ-
ɠɚɧɢɟ
ɛɨɥɟɟ,ௗ%
Ʉɨɷɮɮɢ-
ɰɢɟɧɬ
ɭɫɜɨɟɧɢɹ
ɋɨɞɟɪ-
ɠɚɧɢɟ
ɛɨɥɟɟ,ௗ%
Ʉɨɷɮɮɢ-
ɰɢɟɧɬ
ɭɫɜɨɟɧɢɹ
Ɍɚɛɥɢɰɚ 4.2
Ʉɨɷɮɮɢɰɢɟɧɬɵ ɭɫɜɨɟɧɢɹ ɷɥɟɦɟɧɬɨɜ ɢɡ ɨɬɯɨɞɨɜ ɢ ɮɟɪɪɨɫɩɥɚɜɨɜ
ɩɪɢ ɜɵɩɥɚɜɤɟ ɫɬɚɥɢ ɜ ɢɧɞɭɤɰɢɨɧɧɵɯ ɩɟɱɚɯ
Ʌɟɝɢɪɭ-
ɸɳɢɣ
ɷɥɟɦɟɧɬ
ɋ 0,90 1,00 Al 0 0,75
Si 0,80 0,95 Ti 0,50 0,90
Mn 0,80 0,90 W 0,95 0,95
S 1,00 1,00 V 0,85 0,95 Ɋ 1,00 1,00 Mo 0,97 0,99
Cr 0,85 0,95 Nb 0,95 0,95 Ni 0,97 0,99 Zr 0 0,50
Cu 0,97 0,99 Co 0,95 0,95
Ʉɨɷɮɮɢɰɢɟɧɬ ɭɫɜɨɟɧɢɹ
ɢɡ ɨɬɯɨɞɨɜ,
ɥɨɦɚ
ɢɡ ɮɟɪɪɨ-
ɫɩɥɚɜɨɜ
Ʌɟɝɢɪɭ-
ɸɳɢɣ
ɷɥɟɦɟɧɬ
Ʉɨɷɮɮɢɰɢɟɧɬ ɭɫɜɨɟɧɢɹ
ɢɡ ɨɬɯɨɞɨɜ,
ɥɨɦɚ
ɢɡ ɮɟɪɪɨ-
ɫɩɥɚɜɨɜ
ɉɪɢ ɢɫɩɨɥɶɡɨɜɚɧɢɢ ɬɚɛɥ. 4.1 ɢ 4.2 ɧɟɨɛɯɨɞɢɦɨ ɢɦɟɬɶ ɜ ɜɢɞɭ ɧɟɤɨ­ɬɨɪɵɟ ɨɫɨɛɟɧɧɨɫɬɢ ɪɚɫɱɟɬɚ ɲɢɯɬɵ ɩɨ ɫɨɞɟɪɠɚɧɢɸ ɨɬɞɟɥɶɧɵɯ ɷɥɟɦɟɧɬɨɜ ɜ ɡɚɜɢɫɢɦɨɫɬɢ ɨɬ ɬɢɩɚ ɮɭɬɟɪɨɜɤɢ ɢ ɜɢɞɚ ɩɥɚɜɢɥɶɧɨɝɨ ɚɝɪɟɝɚɬɚ.
28
ȼ ɬɚɛɥ. 4.1 ɭɤɚɡɚɧɵ ɜɫɟ ɤɨɷɮɮɢɰɢɟɧɬɵ ɭɫɜɨɟɧɢɹ ɭɝɥɟɪɨɞɚ ɩɪɢ ɜɵ­ɩɥɚɜɤɟ ɜ ɷɥɟɤɬɪɨɞɭɝɨɜɵɯ ɩɟɱɚɯ. ɗɬɨ ɫɜɹɡɚɧɨ ɫ ɭɝɚɪɨɦ ɭɝɥɟɪɨɞɚ ɜ ɩɟɪɢɨɞ ɤɢɩɟɧɢɹ ɢ ɧɚɭɝɥɟɪɨɠɢɜɚɧɢɟɦ ɫɬɚɥɢ ɨɬ ɷɥɟɤɬɪɨɞɨɜ ɜɨ ɜɪɟɦɹ ɩɥɚɜɤɢ.
ɉɪɢ ɩɥɚɜɤɟ ɫɬɚɥɢ ɫ ɨɤɢɫɥɟɧɢɟɦ ɜ ɷɥɟɤɬɪɨɞɭɝɨɜɨɣ ɩɟɱɢ ɫ ɨɫɧɨɜɧɨɣ ɮɭɬɟɪɨɜɤɨɣ ɜ ɩɪɨɰɟɫɫɟ ɤɢɩɟɧɢɹ ɨɤɢɫɥɹɸɬ ɞɨ 0,25…0,35ௗ% ɭɝɥɟɪɨɞɚ [4; 5].
Ɍɨɝɞɚ ɪɚɫɱɟɬɧɨɟ ɫɨɞɟɪɠɚɧɢɟ ɭɝɥɟɪɨɞɚ
ɜ ɠɢɞɤɨɣ ɫɬɚɥɢ ɩɨɫɥɟ ɪɚɫ-
ɩɥɚɜɥɟɧɢɹ, ɛɭɞɟɬ:
ɋ
= ɋɠ + (0,25 í 0,35).
ɫɬ
ɉɪɢ ɩɥɚɜɤɟ ɫɬɚɥɢ ɫ ɨɤɢɫɥɟɧɢɟɦ ɜ ɤɢɫɥɨɣ ɷɥɟɤɬɪɨɞɭɝɨɜɨɣ ɩɟɱɢ ɜ ɩɪɨɰɟɫɫɟ ɤɢɩɟɧɢɹ ɨɤɢɫɥɹɟɬɫɹ ɞɨ 0,15…0,20ௗ% ɭɝɥɟɪɨɞɚ. ɉɨɷɬɨɦɭ ɪɚɫ­ɱɟɬɧɨɟ ɫɨɞɟɪɠɚɧɢɟ ɭɝɥɟɪɨɞɚ ɜ ɠɢɞɤɨɣ ɫɬɚɥɢ ɩɪɢ ɩɥɚɜɤɟ ɜ ɤɢɫɥɨɣ ɷɥɟɤ­ɬɪɨɞɭɝɨɜɨɣ ɩɟɱɢ ɛɭɞɟɬ:
ɋ
= ɋɠ + (0,10 í 0,20).
ɫɬ
ɉɪɢ ɩɥɚɜɤɟ ɛɟɡ ɨɤɢɫɥɟɧɢɹ ɜɫɥɟɞɫɬɜɢɟ ɧɚɭɝɥɟɪɨɠɢɜɚɧɢɹ ɫɬɚɥɢ ɨɬ ɷɥɟɤɬɪɨɞɨɜ ɫɨɞɟɪɠɚɧɢɟ ɭɝɥɟɪɨɞɚ ɜ ɲɢɯɬɟ ɞɨɥɠɧɨ ɛɵɬɶ ɧɢɠɟ, ɱɟɦ ɜ ɝɨ­ɬɨɜɨɣ ɫɬɚɥɢ [4; 5]:
ɧ
ɋ
= ɋ
í (0,1 í 0,2),
ɠ
ɝɞɟ ɋ
ɲ
ɧ
– ɧɢɠɧɟɟ ɞɨɩɭɫɬɢɦɨɟ ɫɨɞɟɪɠɚɧɢɟ ɭɝɥɟɪɨɞɚ ɜ ɝɨɬɨɜɨɣ ɫɬɚɥɢ,ௗ%.
ɠ
ɉɪɢ ɩɥɚɜɤɟ ɫɬɚɥɢ ɜ ɢɧɞɭɤɰɢɨɧɧɨɣ ɩɟɱɢ ɫɨɞɟɪɠɚɧɢɟ ɭɝɥɟɪɨɞɚ ɜ ɲɢɯɬɟ ɨɩɪɟɞɟɥɹɸɬ ɩɨ ɮɨɪɦɭɥɟ
ɧ
ɋ
= ɋ
ɲ
+ (0,05 í 0,1).
ɠ
Ʉɪɟɦɧɢɣ ɩɪɢ ɩɥɚɜɤɟ ɜ ɨɫɧɨɜɧɵɯ ɷɥɟɤɬɪɨɞɭɝɨɜɵɯ ɩɟɱɚɯ ɢɡ ɨɬɯɨɞɨɜ ɜɵɝɨɪɚɟɬ ɩɨɥɧɨɫɬɶɸ, ɩɪɢ ɩɥɚɜɤɟ ɩɟɪɟɩɥɚɜɨɦ ɭɫɜɚɢɜɚɟɬɫɹ ɧɚ 60ௗ%.
ɉɪɢ ɩɥɚɜɤɟ ɜ ɤɢɫɥɵɯ ɩɟɱɚɯ ɫɨɫɬɚɜ ɫɬɚɥɢ ɩɨ ɤɪɟɦɧɢɸ ɨɩɪɟɞɟɥɹɟɬɫɹ ɧɟ ɫɨɞɟɪɠɚɧɢɟɦ ɟɝɨ ɜ ɲɢɯɬɟ, ɚ ɬɟɯɧɨɥɨɝɢɟɣ ɩɥɚɜɤɢ (ɤɪɟɦɧɟɜɨɫɫɬɚɧɨɜɢ­ɬɟɥɶɧɵɦ ɚɤɬɢɜɧɵɦ ɢɥɢ ɩɚɫɫɢɜɧɵɦ ɩɪɨɰɟɫɫɨɦ). ɋɨɞɟɪɠɚɧɢɟ ɤɪɟɦɧɢɹ ɪɟ­ɝɭɥɢɪɭɸɬ ɢɡɦɟɧɟɧɢɟɦ ɪɟɠɢɦɚ ɩɥɚɜɤɢ, ɢ
ɪɚɫɱɟɬ ɜɟɞɭɬ ɞɥɹ ɤɨɧɤɪɟɬɧɨɣ
ɬɟɯɧɨɥɨɝɢɢ.
Ɏɨɫɮɨɪ ɢ ɫɟɪɚ ɩɪɢ ɩɥɚɜɤɟ ɫɬɚɥɢ ɜ ɨɫɧɨɜɧɵɯ ɷɥɟɤɬɪɨɞɭɝɨɜɵɯ ɩɟɱɚɯ ɦɨɝɭɬ ɛɵɬɶ ɭɞɚɥɟɧɵ ɧɚ 50…70ௗ% ɨɬ ɫɨɞɟɪɠɚɧɢɹ ɢɯ ɜ ɲɢɯɬɟ. ȼ ɤɢɫɥɵɯ ɷɥɟɤɬɪɨɞɭɝɨɜɵɯ ɩɟɱɚɯ ɫɨɞɟɪɠɚɧɢɟ ɫɟɪɵ ɢ ɮɨɫɮɨɪɚ ɧɟ ɦɟɧɹɟɬɫɹ.
29
5. ǶǷǯdzǬǷȂ ǷǧǸǾǬǹǧ ǿǯǼǹȂ ǫDzȆ ǶDzǧǩDZǯ ǸǹǧDzǯ
5.1. ǷȇȘȞȌș ȟȏȜșȢ ȋȒȦ ȖȒȇȉȑȏ ȘșȇȒȏ ȓȇȗȑȏ 110Ǫ13Dz
ȖȌȗȌȖȒȇȉ
ȕȓ, ȖȗȏȈȒȏȍȌȔȔȢȓ ȘȖȕȘȕȈȕȓ
1. ɂɫɯɨɞɹ ɢɡ ɬɟɯɧɨɥɨɝɢɱɟɫɤɢɯ ɬɪɟɛɨɜɚɧɢɣ ɤ ɨɬɥɢɜɤɟ, ɜɵɛɢɪɚɟɦ ɫɬɚɥɶ ɦɚɪɤɢ 110Ƚ13Ʌ. Cɬɚɥɶ 110Ƚ13Ʌ ɢɦɟɟɬ ɫɥɟɞɭɸɳɢɣ ɯɢɦɢɱɟɫɤɢɣ ɫɨ­ɫɬɚɜ [3] ɜ ɩɪɨɰɟɧɬɚɯ:
ɋ Si Mn S P Cr Ni
0,9…1,3 0,4…1,0 11,5…14,5 ɞɨ 0,05 ɞɨ 0,1 0,5 0,5
2. ȼɵɛɢɪɚɟɦ ɦɟɬɨɞ ɩɥɚɜɤɢ, ɬɢɩ ɩɥɚɜɢɥɶɧɨɝɨ ɚɝɪɟɝɚɬɚ /3/, ɨɩɪɟɞɟ­ɥɹɟɦ ɤɨɷɮɮɢɰɢɟɧɬɵ ɭɫɜɨɟɧɢɹ ɷɥɟɦɟɧɬɨɜ (ɬɚɛɥ. 5.1). ɉɥɚɜɤɭ ɫɬɚɥɢ 110Ƚ13Ʌ ɫɥɟɞɭɟɬ ɜɟɫɬɢ ɜ ɷɥɟɤɬɪɨɞɭɝɨɜɨɣ ɩɟɱɢ ɫ ɨɫɧɨɜɧɨɣ ɮɭɬɟɪɨɜɤɨɣ.
ɋɨɞɟɪɠɚɧɢɟ ɭɝɥɟɪɨɞɚ ɜ ɲɢɯɬɟ ɩɪɢ ɩɥɚɜɤɟ ɫɬɚɥɢ ɩɟɪɟɩɥɚɜɨɦ ɢɡ-ɡɚ ɧɚɭɝ­ɥɟɪɨɠɢɜɚɧɢɹ ɨɬ ɷɥɟɤɬɪɨɞɨɜ ɞɨɥɠɧɨ ɛɵɬɶ ɧɢɠɟ, ɱɟɦ ɜ ɝɨɬɨɜɨɣ ɫɬɚɥɢ ɧɚ 0,1…0,2ௗ% (ɫɦ. ɪɚɡɞɟɥ 4.3).
ɋɪɟɞɧɟɟ ɫɨɞɟɪɠɚɧɢɟ ɭɝɥɟɪɨɞɚ ɜ ɲɢɯɬɟ ɪɚɜɧɨ:
ɋ
= ((0,9 + 1,3) / 2) í (0,1 í 0,2) = 1,1 í 0,2 = 0,9ௗ%.
ɲ
Ʉɨɷɮɮɢɰɢɟɧɬɵ ɭɫɜɨɟɧɢɹ ɷɥɟɦɟɧɬɨɜ ɢɡ ɲɢɯɬɵ ɩɪɢ ɩɥɚɜɤɟ ɫɬɚɥɢ
110Ƚ13Ʌ ɩɟɪɟɩɥɚɜɨɦ ɞɚɧɵ ɜ ɬɚɛɥ. 5.1.
Ɍɚɛɥɢɰɚ 5.1
Ʉɨɷɮɮɢɰɢɟɧɬɵ ɭɫɜɨɟɧɢɹ ɷɥɟɦɟɧɬɨɜ ɢɡ ɲɢɯɬɨɜɵɯ ɦɚɬɟɪɢɚɥɨɜ
Ƚɪɭɩɩɚ
ɦɚɬɟɪɢɚɥɚ
Ɉɬɯɨɞɵ, ɥɨɦ 0,9 0,6 0,80 0,5 0,5 0,85 0,97
Ɏɟɪɪɨɫɩɥɚɜɵ 1,0 0,9 0,95 1,0 0,8 0,95 0,97
Ʉ
Ʉ
ɋ
Ʉɨɷɮɮɢɰɢɟɧɬ ɭɫɜɨɟɧɢɹ
Ʉ
Si
Mn
Ʉ
Ʉ
S
Ʉ
P
Ʉ
Cr
Ni
ȼɵɛɢɪɚɟɦ ɦɚɪɤɢ ɢ ɫɨɫɬɚɜɵ ɢɫɯɨɞɧɵɯ ɲɢɯɬɨɜɵɯ ɦɚɬɟɪɢɚɥɨɜ [3]
ɢ ɫɜɨɞɢɦ ɢɯ ɜ ɬɚɛɥ. 5.2.
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