3.1. Допуски массы отливок должны соответствовать указанным в табл.4.
Таблица 4
Номинальная масса отливки, кг | Допуск массы отливки, %, не более, для классов точности массы отливки | |||||||||||||||||||||
1 | 2 | 3т | 3 | 4 | 5т | 5 | 6 | 7т | 7 | 8 | 9т | 9 | 10 | 11т | 11 | 12 | 13т | 13 | 14 | 15 | 16 | |
До 0,1 | 1,6 | 2,0 | 2,4 | 3,2 | 4,0 | 5,0 | 6,4 | 8,0 | 10,0 | 12,0 | 16,0 | 20,0 | 24,0 | 32,0 | - | - | - | - | - | - | - | - |
Св. 0,1 " 0,4 | 1,2 | 1,6 | 2,0 | 2,4 | 3,2 | 4,0 | 5,0 | 6,4 | 8,0 | 10,0 | 12,0 | 16,0 | 20,0 | 24,0 | 32,0 | - | - | - | - | - | - | - |
" 0,4 " 1,0 | 1,0 | 1,2 | 1,6 | 2,0 | 2,4 | 3,2 | 4,0 | 5,0 | 6,4 | 8,0 | 10,0 | 12,0 | 16,0 | 20,0 | 24,0 | 32,0 | - | - | - | - | - | - |
" 1,0 " 4,0 | - | 1,0 | 1,2 | 1,6 | 2,0 | 2,4 | 3,2 | 4,0 | 5,0 | 6,4 | 8,0 | 10,0 | 12,0 | 16,0 | 20,0 | 24,0 | 32,0 | - | - | - | - | - |
" 4,0 " 10,0 | - | - | 1,0 | 1,2 | 1,6 | 2,0 | 2,4 | 3,2 | 4,0 | 5,0 | 6,4 | 8,0 | 10,0 | 12,0 | 16,0 | 20,0 | 24,0 | 32,0 | - | - | - | - |
" 10,0 " 40,0 | - | - | - | 1,0 | 1,2 | 1,6 | 2,0 | 2,4 | 3,2 | 4,0 | 5,0 | 6,4 | 8,0 | 10,0 | 12,0 | 16,0 | 20,0 | 24,0 | 32,0 | - | - | - |
" 40,0 " 100,0 | - | - | - | - | 1,0 | 1,2 | 1,6 | 2,0 | 2,4 | 3,2 | 4,0 | 5,0 | 6,4 | 8,0 | 10,0 | 12,0 | 16,0 | 20,0 | 24,0 | 32,0 | - | - |
" 100,0 " 400,0 | - | - | - | - | - | 1,0 | 1,2 | 1,6 | 2,0 | 2,4 | 3,2 | 4,0 | 5,0 | 6,4 | 8,0 | 10,0 | 12,0 | 16,0 | 20,0 | 24,0 | 32,0 | - |
" 400,0 " 1000,0 | - | - | - | - | - | - | 1,0 | 1,2 | 1,6 | 2,0 | 2,4 | 3,2 | 4,0 | 5,0 | 6,4 | 8,0 | 10,0 | 12,0 | 16,0 | 20,0 | 24,0 | 32,0 |
" 1000,0 " 4000,0 | - | - | - | - | - | - | - | 1,0 | 1,2 | 1,6 | 2,0 | 2,4 | 3,2 | 4,0 | 5,0 | 6,4 | 8,0 | 10,0 | 12,0 | 16,0 | 20,0 | 24,0 |
" 4000,0 " 10000,0 | - | - | - | - | - | - | - | - | 1,0 | 1,2 | 1,6 | 2,0 | 2,4 | 3,2 | 4,0 | 5,0 | 6,4 | 8,0 | 10,0 | 12,0 | 16,0 | 20,0 |
" 10000,0 " 40000,0 | - | - | - | - | - | - | - | - | - | 1,0 | 1,2 | 1,6 | 2,0 | 2,4 | 3,2 | 4,0 | 5,0 | 6,4 | 8,0 | 10,0 | 12,0 | 16,0 |
" 40000,0 " 100000,0 | - | - | - | - | - | - | - | - | - | - | 1,0 | 1,2 | 1,6 | 2,0 | 2,4 | 3,2 | 4,0 | 5,0 | 6,4 | 8,0 | 10,0 | 12,0 |
" 100000,0 | - | - | - | - | - | - | - | - | - | - | - | 1,0 | 1,2 | 1,6 | 2,0 | 2,4 | 3,2 | 4,0 | 5,0 | 6,4 | 8,0 | 10,0 |
Примечание. Допуски массы отливок приведены в процентах от номинальной массы отливок.
3.2. Установлено симметричное расположение поля допуска массы относительно номинальной массы.