標準編號:	JBZQ 4297-1986
中文名稱:	合金鑄件
英文名稱:	Alloy cast steel
行業(yè)分類:	JB    機械行業(yè)標準
發(fā)布機構:	國家機械工業(yè)委員會重型機械局
發(fā)布日期:	1986-12-20
實施日期:	1986-12-20
標準狀態(tài):	valid
翻譯語言:	英文
文件格式:	PDF
中文字符數(shù):	2000 字
翻譯價格(元):	40.0
交付時間:	付款后 1 個工作日

Alloy Cast Steel 合金鑄鋼 This standard is applicable to the casting casted in sand mould or the casting mould with similar thermal conductivity with the sand mould. 1 Manufacture The steelmaking method, castings production process and heat treatment process are determined by the manufacturer. 2 Chemical Composition The chemical composition of alloy cast steel shall be in accordance with those specified in Table 1. Table 1 Chemical Composition of Alloy Cast Steel Steel grade Chemical compositions % C Si Mn S P Cr Ni Mo Cu ZG40Mn 0.35~0.45 0.30~0.45 1.20~1.50 ≤0.030 - - - - ZG40Mn2 0.35~0.45 0.20~0.40 1.60~1.80 ≤0.030 - - - - ZG50Mn2 0.45~0.55 0.20~0.40 1.50~1.80 ≤0.030 - - - - ZG20SiMn ≤0.23 ≤0.60 1.00~1.50 ≤0.025 ≤0.30 ≤0.40 ≤0.15 - ZG35SiMn 0.30~0.40 0.60~0.80 1.10~1.40 ≤0.030 - - - - ZG35SiMnMo 0.32~0.40 1.10~1.40 1.10~1.40 ≤0.030 ≤0.30 ≤0.30 0.20~0.30 ≤0.30 ZG35CrMnSi 0.30~0.40 0.50~0.75 0.90~1.20 ≤0.030 0.50~0.80 - - - ZG20MnMo 0.17~0.23 0.20~0.40 1.10~1.40 ≤0.030 ≤0.30 ≤0.30 0.20~0.35 ≤0.30 ZG5CrMnMo 0.50~0.60 0.25~0.60 1.20~1.60 ≤0.030 0.60~0.90 ≤0.30 0.20~0.30 ≤0.30 ZG40Cr 0.35~0.45 0.20~0.40 0.50~0.80 ≤0.030 0.80~1.10 - - - ZG34CrNiMo 0.30~0.37 0.30~0.60 0.60~1.00 ≤0.025 1.40~1.70 1.40~1.70 0.15~0.35 - ZG20CrMo 0.17~0.25 0.20~0.45 0.50~0.80 ≤0.030 0.50~0.80 - 0.40~0.60 - ZG35CrMo 0.30~0.37 0.30~0.50 0.50~0.80 ≤0.030 0.80~1.20 - 0.20~0.30 - ZG42CrMo 0.38~0.45 0.30~0.60 0.60~1.00 ≤0.025 0.80~1.20 - 0.20~0.30 - ZG50CrMo 0.46~0.54 0.25~0.50 0.50~0.80 ≤0.030 0.90~1.20 - 0.15~0.25 - ZG65Mn 0.62~0.70 0.17~0.37 0.90~1.20 ≤0.030 ≤0.25 ≤0.25 - - Note: The content of residual elements is Ni≤0.30%, Cr≤0.30%, Cu≤0.25%, Mo≤0.15%, and V≤0.05%. 3 Mechanical Performance The mechanical performance of alloy steel castings after the final heat treatment shall be in accordance with those specified in Table 2. Table 2 Mechanical Performance of the Sample Under Room Temperature and Application Examples Steel grade Type of heat treatment Sectional dimension mm Mechanical performance ≥ Characteristic and use σs or σ0.2 N/mm2 σb N/mm2 δ % Ψ % Impact performance Hardness HB Ak J DV M ISO -V Charpy -U ZG40Mn Normalizing + tempering ≤100 295 640 12 30 - - - 163 Used for making parts bearing friction and impact, e.g. the gear ZG40Mn2 Normalizing + tempering, quenching and tempering ≤100 395 685 590 835 20 13 55 45 - - 35 179 269~302 Used for making parts bearing friction, e.g. the gear. ZG50Mn2 Normalizing + tempering ≤100 445 785 18 37 - - - - Used for making high strength parts, e.g. gear and rim of gear. ZG20SiMn Normalizing + tempering, quenching and tempering ≤100 295 300 510 500~650 14 24 30 - 45 39 156 150~190 With good welding and flowability, used for making ram cylinder, blade, nozzle body, valve and elbow etc. ZG35SiMn Normalizing + tempering, quenching and tempering ≤100 345 415 570 640 12 12 20 25 - - 24 27 - Used for making parts bearing friction. ZG35SiMnMo Normalizing + tempering, quenching and tempering ≤100 395 490 640 690 12 12 20 25 - - 24 27 - Used for making parts with larger load. GZ35CrMnSi Normalizing + tempering ≤100 345 690 14 30 - - - 217 Used for making parts bearing impact and abrasion, e.g. gear and roller. ZG20MnMo Normalizing + tempering ≤100 295 490 16 - - - 39 156 Used for making pressure vessel, e.g. pump case. ZG5CrMnMo Normalizing + tempering ≤100 Not specified - - - - - - With certain red hardness, used for making forging die etc. ZG40Cr Normalizing + tempering ≤100 345 630 18 26 - - - 212 Used for making high strength gear ZG34CrNiMo Quenching and tempering <150 150~250 250~400 700 650 650 950~1000 800~950 800~950 12 12 10 - - 32 28 20 - 240~290 220~270 220~270 Used for making parts with extremely high requirements, e.g. bevel gear, small gear, traveling wheel of crane and axle. ZG20CrMo Quenching and tempering ≤100 245 460 18 30 - - 24 - Used for making gear, bevel gear and high pressure cylinder parts etc. ZG35CrMo Quenching and tempering ≤100 510 740~880 12 - 27 - - - Used for making gear, axle sleeve of the electric furnace beam wheel, gear ring etc. ZG42CrMo Quenching and tempering ~30 30~100 100~150 150~250 250~400 540 490 450 400 350 740~880 690~830 690~830 650~800 650~800 12 11 10 10 8 - 27 21 16 12 9.6 - 220~260 200~250 200~250 195~240 195~240 Used for making high strength parts, gear and bevel gear etc. ZG50CrMo Quenching and tempering ≤100 520 740~880 11 - 34 - - 220~260 Used for making reducer parts gear and small gear etc. ZG65Mn Normalizing + tempering ≤100 Not specified - - - - - - Used for making the lining plate of ball mill etc. 4 Test Methods and Rules 4.1 Chemical composition analysis 4.1.1 The sample for chemical composition analysis shall be prepared during the process of pouring. 4.1.2 Chemical composition analysis shall be in accordance with the requirements of Methods for Chemical Analysis of Iron, Steel and Alloy (GB 223-81~84).

1 Manufacture 2 Chemical Composition 3 Mechanical Performance 4 Test Methods and Rules

國家機械工業(yè)委員會重型機械局企業(yè)標準 JB/ZQ 4297-86 合金鑄鋼 代替 Q/ZB 66-73 共3頁 第1頁 本標準適用于砂型鑄造或導熱性與砂型相仿的鑄型中澆出的鑄件。 1 制造 煉鋼方法、鑄件生產工藝、熱處理工藝由制造廠自己決定。 2 化學成分 合金鑄鋼化學成分應符合表1的規(guī)定。 表1 合金鑄鋼化學成分 鋼號 化學成分% C Si Mn S P Cr Ni Mo Cu ZG40Mn 0.35~0.45 0.30~0.45 1.20~1.50 ≤0.030 — — — — ZG40Mn2 0.35~0.45 0.20~0.40 1.60~1.80 ≤0.030 — — — — ZG50Mn2 0.45~0.55 0.20~0.40 1.50~1.80 ≤0.030 — — — — ZG20SiMn ≤0.23 ≤0.60 1.00~1.50 ≤0.025 ≤0.30 ≤0.40 ≤0.15 — ZG35SiMn 0.30~0.40 0.60~0.80 1.10~1.40 ≤0.030 — — — — ZG35SiMnMo 0.32~0.40 1.10~1.40 1.10~1.40 ≤0.030 ≤0.30 ≤0.30 0.20~0.30 ≤0.30 ZG35CrMnSi 0.30~0.40 0.50~0.75 0.90~1.20 ≤0.030 0.50~0.80 — — — ZG20MnMo 0.17~0.23 0.20~0.40 1.10~1.40 ≤0.030 ≤0.30 ≤0.30 0.20~0.35 ≤0.30 ZG5CrMnMo 0.50~0.60 0.25~0.60 1.20~1.60 ≤0.030 0.60~0.90 ≤0.30 0.20~0.30 ≤0.30 ZG40Cr 0.35~0.45 0.20~0.40 0.50~0.80 ≤0.030 0.80~1.10 — — — ZG34CrNiMo 0.30~0.37 0.30~0.60 0.60~1.00 ≤0.025 1.40~1.70 1.40~1.70 0.15~0.35 — ZG20CrMo 0.17~0.25 0.20~0.45 0.50~0.80 ≤0.030 0.50~0.80 — 0.40~0.60 — ZG35CrMo 0.30~0.37 0.30~0.50 0.50~0.80 ≤0.030 0.80~1.20 — 0.20~0.30 — ZG42CrMo 0.38~0.45 0.30~0.60 0.60~1.00 ≤0.025 0.80~1.20 — 0.20~0.30 — ZG50CrMo 0.46~0.54 0.25~0.50 0.50~0.80 ≤0.030 0.90~1.20 — 0.15~0.25 — ZG65Mn 0.62~0.70 0.17~0.37 0.90~1.20 ≤0.030 ≤0.25 ≤0.25 — — 注：殘余元素含量Ni≤0.30%，Cr≤0.30%，Cu≤0.25%，Mo≤0.15%，■≤0.65%。 批準 機械委重型機械局 1986年12月20日 5.12 3 機械性能 經(jīng)過最后熱處理的合金鑄鋼件的機械性能應符合表2的規(guī)定。 表2 室溫下試樣機械性能及應用舉例 鋼號 熱處理類型 截面尺寸mm 機械性能≥ 特性和用途 σs或σ0-2 N/mm2 σb N/mm2 δ % Ψ % 沖擊性能 硬度HB Ak J DV M ISO-V 夏比-U ZG40Mn 正火+回火 ≤100 295 640 12 30 — — — 168 用于承受摩擦和沖擊零件，如齒輪等 ZG40Mn2 正火+回火調質 ≤100 395 685 590 835 20 13 55 45 — — 85 179 269~302 用于承受摩擦的零件如齒輪等。 ZG50Mn2 正火+回火 ≤100 445 785 18 37 — — — — 用于高強度零件，如齒輪、齒輪緣等。 ZG20SiMn 正火+回火調質 ≤100 295 300 510 500~650 14 24 80 — 45 39 156 150~190 焊接及流動性良好，作水壓機缸、葉片、噴嘴體，閥、彎頭等。 ZG35SiMn 正火+回火調質 ≤100 345 415 570 640 12 12 20 25 — — 24 27 — 用于受摩擦的零件。 ZG35SiMnMo 正火+回火調質 ≤100 395 490 640 690 12 12 20 25 — — 24 27 — 制造負荷較大的零件。 GZ35CrMnSi 正火+回火 ≤100 845 690 14 30 — — — 217 用于承受沖擊、受磨損的零件，如齒輪、滾輪等。 ZG20MnMo 正火+回火 ≤100 295 490 16 — — — 89 156 用于受壓容器如泵殼等。 ZG5CrMnMo 正火+回火 ≤100 不規(guī)定 — — — — — — 有一定的紅硬性，用于鍛模等。 ZG40Cr 正火+回火 ≤100 845 680 18 26 — — — 212 用于高強度齒輪 ZG34CrNiMo 調質 <150 150~250 250~400 700 650 650 950~1000 800~950 800~950 12 12 10 — — 32 28 20 — 240~290 220~270 220~270 用于特別高要求的零件，如錐齒輪，小齒輪，吊車行走輪、軸等。 續(xù)表2 鋼號 熱處理類型 截面尺寸mm 機械性能≥ 特性和用途 σs或σ0-2 N/mm2 σb N/mm2 δ % Ψ % 沖擊性能 硬度HB Ak J DV M ISO-V 夏比-U ZG20CrMo 調質 ≤100 245 460 18 30 — — 24 — 用于齒輪，錐齒輪及高壓缸零件等 ZG35CrMo 調質 ≤100 510 740~880 12 — 27 — — — 用于齒輪、電爐支撐輪軸套、齒圈等。 ZG42CrMo 調質 ~30 80~100 100~150 150~250 250~400 540 490 450 400 350 740~880 690~880 690~880 650~800 650~800 12 11 10 10 8 — 27 21 16 12 9.6 — 220~260 200~250 200~250 195~240 195~240 用于高負荷的零件、齒輪、錐齒輪等。 ZG50CrMo 調質 ≤100 520 740~880 11 — 34 — — 220~260 用于減速器零件齒輪，小齒輪等。 ZG65Mn 正火+回火 ≤100 不規(guī)定 — — — — — — 用于球磨機襯板等。 4 試驗方法和規(guī)則 4.1 化學成分分析 4.1.1 化學成分分析用試樣應在澆注中途制取。 4.1.2 化學成分分析應按GB 223-81~84《鋼鐵及合金化學分析方法》的規(guī)定。 4.2 機械性能試驗 4.2.1 鑄造試塊 機械性能試驗用試塊應在澆注中途單獨鑄出或本體附鑄，如需方無要求，試塊的選用由制造廠決定。試塊的主要尺寸和試樣切取位置應按GB 979-67《碳素鋼鑄件分類及技術條件》的規(guī)定。附鑄試塊的部位由供需雙方商定。 4.2.2 試驗方法 4.2.2.1 拉力試驗應按照GB 228-76《金屬拉力試驗法》的規(guī)定。 4.2.2.2 沖擊試驗應按照GB 2106-80《金屬夏比（V型缺口）沖擊試驗方法》和GB 229-84《金屬夏比（U型缺口）沖擊試驗方法》的規(guī)定。 4.2.2.3 硬度試驗應按照GB 231-84《金屬布氏硬度試驗方法》的規(guī)定。