熱軋環件(YB/T 4068---1991)
(1)尺寸規格見表4~54。表4--54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4~55表4-55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 | P | S |
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 |
註:鋼中殘餘Cr、Ni、Cu含量應符合GB/T1591、GB/T 699、GB/T 3077相應標準規定。(3)力學性能 見表4-56~表4-58。表4-56 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 (%) | 衝擊吸收功 AKU /J | 布氏硬度 HBS 1O/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 |
>1oo | 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4~57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(%) | 衝擊吸收功 Aku /J | 布氏硬度 HBS 10/3000 |
≥ |
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4-58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 (%) | 衝擊吸收功 Aku /J | 布氏硬度 HBS 10/3000 |
≥ |
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)用途適用於製造齒圈、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。