表1熱軋環件的尺寸規格(mm)
| 外徑 | 高度 | 內徑 | 壁厚 |
| 600-2000 | 70-220 | ≥500 | 50-160 |
(2)牌號和化學成分見表2
表2 熱軋環件的牌號和化學成分
| 牌號 | 化學成分(質量分數)(%) | ||||||
| C | Si | Mn | Cr | Mo | - | - | |
| 10 | O.07~ 0.14 | O.17~ 0.37 | 0.35~ 0.65 | - | - | ≤O.035 | ≤0.035 |
| 15 | 0.12~ O.19 | 0.17~ 0.37 | O.35~ O.65 | - | - | ≤O.035 | ≤O.035 |
| 20 | 0.17~ 0.24 | O.17~ O.37 | 0.35~ 0.65 | - | - | ≤0.035 | ≤0.035 |
| 25 | O.22~ 0.30 | 0.17~ 0.37 | O.50~ O.80 | - | - | ≤O.035 | ≤O.035 |
| 30 | O.27~ 0.35 | O.17~ O.37 | 0.50~ 0.80 | - | - | ≤0.035 | ≤0.035 |
| 35 | O.32~ O.40 | 0.17~ 0.37 | O.50~ O.80 | - | - | ≤O.035 | ≤O.035 |
| 40 | 0.37~ O.45 | O.17~ O.37 | 0.50~ 0.80 | - | - | ≤0.035 | ≤0.035 |
| 45 | 0.42~ O.50 | 0.17~ O.37 | O.50~ 0.80 | - | - | ≤O.035 | ≤O.035 |
| 50 | 0.47~ 0.55 | O.17~ O.37 | 0.50~ 0.80 | - | - | ≤0.035 | ≤0.035 |
| 16Mn | 0.12~ O.20 | O.20~ 0.55 | 1.20~ 1.60 | - | - | ≤O.035 | ≤O.035 |
| 50Mn | O.48~ 0.56 | O.17~ O.37 | O.70~ 1.00 | - | - | ≤0.035 | ≤0.035 |
| 40Cr | O.37~ 0.44 | 0.17~ O.37 | O.50~ O.80 | O.80~ 1.10 | - | ≤O.030 | ≤O.030 |
| 42CrM0 | 0.38~ O.45 | 0.17~ 0.37 | O.50~ 0.80 | 0.90~ 1.20 | 0.15~ O.25 | ≤0.030 | ≤0.030 |
| 42CrMoA | O.38~ O.45 | O.17~ 0.37 | 0.50~ 0.80 | O.90~ 1.20 | O.15~ O.25 | ≤0.025 | ≤0.025 |
| 50SiMn | O.45~ 0.56 | O.80~ 1.10 | O.80~ 1.10 | - | - | ≤O.030 | ≤O.030 |
| 35SiMn | O.32~ 0.40 | 1.10~ 1.40 | 1.10~ 1.40 | - | - | ≤O.030 | ≤0.030 |
| 35CrMo | 0.32~ O.40 | O.17~ 0.37 | 0.40~ 0.70 | O.80~ 1.10 | O.15~ 0.25 | ≤0.030 | ≤O.030 |
| 50CrMoA | O.45~ 0.54 | O.17~ O.37 | 0.50~ O.80 | O.90~ 1.20 | O.15~ O.25 | ≤0.025 | ≤0.025 |
注:鋼中殘余Cr、Ni、Cu含量應符合GB/T1591、GB/T699、GB/T3077相應標準規定。
(3)力學性能見表3表4。
表3優質碳素鋼結構鋼環件的力學性能。
| 牌號 | 交貨狀態 | 壁厚/mm | 抗拉強度ób/MPa | 伸長率δ5(%) | 斷面收縮率ψ(%) | 沖擊吸收功Aku/J | 布氏硬度HBS1O/3000 |
| ≥ | |||||||
| 15 | 正火 | ≤100 | 345 | 27 | 53 | - | |
| >100 | 335 | 25 | 50 | - | |||
| 20 | ≤100 | 390 | 24 | 53 | - | ||
| >100 | 370 | 23 | 50 | - | |||
| 25 | ≤100 | 420 | 22 | 48 | 39 | ||
| >100 | 390 | 20 | 46 | 31 | |||
| 30 | ≤100 | 470 | 19 | 45 | 31 | ||
| >100 | 460 | 18 | 40 | 24 | |||
| 35 | ≤100 | 510 | 18 | 43 | 31 | ||
| >100 | 490 | 18 | 40 | 24 | |||
| 40 | ≤100 | 550 | 17 | 40 | 24 | ||
| >100 | 530 | 17 | 36 | 24 | |||
| 45 | ≤100 | 590 | 15 | 32 | 31 | ≤241 | |
| >100 | 570 | 15 | 30 | 27 | |||
| 50 | ≤100 | 61O | 13 | 30 | 31 | ||
| >100 | 590 | 12 | 28 | 27 | |||
| 50Mn | ≤100 | 635 | 13 | 35 | 31 | 207-262 | |
| >100 | 610 | 12 | 33 | 27 | |||
表4 合金結構鋼環件的力學性能
| 牌號 | 交貨狀態 | 壁厚/mm | 抗拉強度ób/MPa | 伸長率δ5(%) | 斷面收縮率ψ(%) | 沖擊吸收功Aku/J | 布氏硬度HBS10/3000 |
| ≥ | |||||||
| 40Cr | 調質 | ≤60 | 785 | 9 | 35 | 31 | 207-206 |
| 61-80 | 735 | 9 | 30 | 27 | |||
| 81-140 | 685 | 9 | 30 | 24 | |||
| 35CrMo | 調質 | ≤70 | 735 | 15 | 40 | 47 | 207-262 |
| 71-140 | 685 | 15 | 40 | 39 | |||
| 42CrMo(42CrMoA) | 調質 | ≤70 | 785 | 12 | 40 | 47 | 207-262 |
| 71-140 | 735 | 1O | 35 | 39 | |||
| 35SiMn | 調質 | ≤60 | 785 | 12 | 40 | 39 | 207-262 |
| 61-80 | 735 | 12 | 35 | 35 | |||
| 81-140 | 685 | 12 | 35 | 31 | |||
| 50SiMn | 調質 | ≤60 | 835 | 1O | 35 | 31 | 207-262 |
| 61-80 | 785 | 10 | 35 | 27 | |||
| 81-140 | 735 | 10 | 35 | 24 | |||
| 50CrMoA | 調質 | ≤140 | 835 | 8 | - | 39 | 255-31 |
表5 法蘭環件的力學性能
| 牌號 | 交貨狀態 | 壁厚/mm | 抗拉強度ób/MPa | 伸長率δ5(%) | 斷面收縮率ψ(%) | 沖擊吸收功Aku/J | 布氏硬度HBS10/3000 |
| ≥ | |||||||
| 1O | 正火 | ≤100 | 335 | 205 | 31 | - | |
| >100 | 315 | 185 | 30 | - | |||
| 15 | ≤100 | 355 | 205 | 27 | - | ||
| >100 | 335 | 185 | 26 | - | |||
| 20 | ≤100 | 370 | 215 | 24 | 43 | 109-156 | |
| >100 | 370 | 195 | 23 | 39 | |||
| 25 | ≤100 | 420 | 235 | 22 | 39 | 111-170 | |
| >100 | 390 | 215 | 20 | 39 | |||
| 16Mn | 正火或調質 | ≤100 | 490-610 | 295 | 20 | 47 | 120-180 |
| >100 | 470-620 | 275 | 19 | 47 | |||
(4)用途:適用于制造齒圈、軸承圈、磨環及壓力容器平焊法蘭、高頸法蘭、浮頭鉤圈法蘭和高頸搪瓷法蘭等。
(1)尺寸規格見表1。
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