Pofuna kudziwa nthawi yowumitsa matabwa ochekedwa ndi zinthu zosiyanasiyana, njira yopangidwa ku Central Scientific Research Institute for Mechanical Wood Processing ndiyofunika.

Njirayi imaneneratu makokofidi kuchokera pamatebulo 1–8. Amaganizira za mtundu wa nkhuni, makulidwe, m’lifupi ndi kutalika kwa zinthu, ubwino wa kuyanika kwake, kamangidwe ka chowumitsira, chinyezi choyambirira komanso chomaliza.

Coefficients kutengera mtundu ndi makulidwe a matabwa

Table 1 — Coefficient malinga ndi mtundu wa nkhuni

Table 1: Coefficient malinga ndi mtundu wa nkhuni
Mtundu wa nkhuni spruce, fir Bor Birch Bukva Arish Oak
Coefficient 0 4 26 41 46 71

Table 2 — Coefficient malinga ndi makulidwe a zinthu

Table 2: Coefficient malinga ndi makulidwe azinthu
Kukula, mm 13 16 19 22 25 30 35 40 45 50 55 60
Coefficient 0 9 16 23 28 36 43 49 54 59 65 70
Kukula, mm 70 80 90 100 110 120 130 140 150 180 220 280
Coefficient 80 89 97 104 110 116 121 126 130 142 155 171

Table 3 — Coefficient malinga ndi material width

Table 3: Coefficient malinga ndi material wide
Kugwirizana kwa zinthu m'lifupi ndi makulidwe ake W:D ku 1,5 2 3 5 10
Coefficient 0 5 9 14 18

Table 4 — Coefficient malinga ndi kutalika kwa zinthu

Table 4: Coefficient malinga ndi kutalika kwa zinthu
Utali, m 0,3 – 0,4 0,5 – 0,6 0,7 – 0,8 0,9 – 1,0 kudzera 1,0
Coefficient 0 6 11 14 15

Coefficients malinga ndi mtundu wowumitsa ndi chowumitsira

Table 5 — Coefficient malinga ndi kuyanika kwa zinthu

Table 5: Coefficient malinga ndi mtundu wowumitsa wa zinthu
Chigawo chowumitsa Kuyanika matabwa abwinobwino (gulu II) Kuyanika kwabwino kwa matabwa ocheka ndi mipando, kupanga ngolo.. (gulu la I) Kuyanika kwapamwamba popangira mawilo, utawaleza wa oak..
Coefficient 0 8 20

Table 6 — Coefficient malinga ndi dryer design

Table 6: Coefficient malinga ndi kapangidwe ka chowumitsira
Mtundu wa zinthu SRC Ndi kusinthasintha kofananira Ndi kayendedwe kachilengedwe kapena kofooka Makanema okhala ndi kufalikira kwachilengedwe
Coefficient 0 4 8 15

Zinthu zokhazikika zidaganiziridwa powerengera coefficient. Zinthu zokhazikika zimatanthawuza matabwa a paini wandiweyani50 mm, m’lifupi150 mmndi kutalika1 m, ndi chinyezi choyambirira60%ndipo potsiriza12%. Nkhaniyi, anaika pa wandiweyani ziyangoyango25 mm, ziyenera zouma mu zowumitsira ndi zachilengedwe kufalitsidwa mpweya nthawi6masiku.

Kugwiritsa ntchito ma coefficients omwe aperekedwa patebulo1-8, mawu okhazikika oumitsa matabwa ochekedwa angadziŵike.

Chitsanzo chowerengera

M`pofunika kudziwa normative nthawi kuyanika wakuda paini matabwa40 mm, m’lifupi20 mm(chiwerengero cha m’lifupi ndi makulidwe200:40=5) ndi kutalika1,0 m. Ma boardwa amapangidwira kupanga mafelemu a khomo, mwachitsanzo, mtundu wowumitsa ndi gulu I, ndipo amawumitsidwa muzowumitsira ndi kuthamangitsidwa kwa mpweya wobwerera kuchokera pachinyezi choyambirira.60%ku chinyezi chambiri9%.

Ma coefficients ofananira amapereka:

K = 4 + 49 + 14 + 15 + 8 + 0 + 82 = 172

Coefficients molingana ndi chinyezi komanso magawo oyanika

Table7- Coefficient malinga ndi chinyezi choyambirira komanso chomaliza cha matabwa ocheka

Table7: Coefficient malinga ndi chinyezi choyambirira komanso chomaliza cha matabwa ocheka
Chinyezi choyambirira,% Chinyezi chomaliza,%
6 7 8 9 10 11 12 13 14 15 18 20 22 25
20 62 56 50 45 38 32 25 18 9 0 / / / /
25 70 65 60 55 50 45 41 35 30 25 6 / / /
30 75 70 66 62 58 54 50 46 42 38 25 15 30 /
35 79 75 71 67 64 60 57 54 50 47 38 29 21 7
40 82 78 75 71 68 65 62 59 56 53 44 38 32 21
45 85 81 77 75 72 69 66 63 61 58 50 45 40 31
50 87 83 80 77 75 72 69 67 65 63 55 51 46 38
55 89 85 82 80 77 75 72 70 68 65 59 55 50 44
60 90 87 84 82 79 77 75 72 70 68 62 58 55 48
65 92 89 86 84 81 79 77 75 73 71 65 61 58 52
70 93 90 88 85 83 81 78 76 75 73 67 64 61 55
75 94 92 89 87 85 82 80 78 77 75 69 66 63 58
80 95 93 90 88 86 84 82 80 78 77 71 68 65 61
85 96 94 91 89 87 85 83 82 80 78 73 70 67 63
90 97 95 92 90 88 86 85 83 81 79 75 72 69 65
95 98 96 93 91 89 87 86 84 82 81 76 73 71 67
100 99 97 94 92 90 88 87 85 83 82 77 75 73 69
110 101 98 96 94 92 90 89 87 85 84 80 77 75 74
120 102 99 97 95 94 92 90 89 87 86 82 79 77 76
140 104 102 100 98 96 95 93 92 90 89 85 83 81 78

Table 8 — Coefficient powerengeranso zowumitsa pakapita nthawi chinyezi

Table 8: Coefficient powerengeranso zowumitsa pakapita nthawi chinyezi chikachepa
Kuchepa kwa chinyezi, % 60-50 50-40 40-35 35-30 30-25
Kuyanika gawo lagawo 0,11 0,14 0,08 0,10 0,11
Kuchepa kwa chinyezi, % 25-20 20-15 15-12 12-10 10-8
Kuyanika gawo lagawo 0,14 0,17 0,15 0,11 0,14

Mitu yofananira: matabwa ofewa ndi matabwa olimba, kuyanika nkhuni, kutentha kwa matabwa ndi chinyezi, kupanga mazenera ndi zitseko ndi chofunikira kupereka.