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个人中心收藏查看我的收藏0有用+10播报讨论上传视频石油钻杆连接套及接头用合金结构钢是一种中碳低合金结构钢，主要应用于石油钻杆连接套、接头及油井管坯等高压装备制造领域 [2-3]。该材料化学成分以碳（0.35-0.38%）、锰（0.85-1.00%）、铬（0.90-1.20%）为主，与40CrMnMo具有近似成分体系而碳含量略低。执行标准涵盖GB/T 3077、JIS G4053、API 6A等国际规范，生产工艺涉及电弧炉/转炉冶炼及调质热处理流程 [3]。材料特性方面，其屈服强度≥785MPa，抗拉强度≥980MPa，延伸率≥12%，通过920-960℃淬火及550-650℃回火可获得优良的强韧性组合 [1]。在石油钻井领域，该钢材制造的加重钻杆可降低定向井作业扭矩，减少钻柱磨损和压差卡钻风险。除核心油气装备外，还应用于汽车传动部件、船舶结构件等领域。材料类别合金结构钢
执行标准GB/T 3077、API 6A、JIS G4053 [3]
化学成分C 0.35-0.38%、Mn 0.85-1.00%、P ≤0.015、S ≤0.008
生产工艺电弧炉冶炼+调质处理
质量等级A级（低杂质） [2-3]
生产厂商河钢集团、江苏永钢 [2-3]

目录
1材料特性2工业应用3生产工艺4质量改进研究5标准体系6工程应用案例
材料特性
播报编辑化学成分体系包含碳、硅、锰、铬、钼等元素：碳（C）0.35-0.38%、硅（Si）0.15-0.35%、锰（Mn）0.85-1.00%、铬（Cr）0.90-1.20%、钼（Mo）0.28-0.33%力学性能表现：屈服强度≥785MPa，抗拉强度≥980MPa，延伸率≥12%，冲击韧性≥35J/cm²热处理工艺特性：淬火温度控制在920-960℃区间，回火温度范围为550-650℃，需精确控制冷却速率
工业应用
播报编辑石油钻采装备：用于制造石油钻杆连接套、钻挺及油井套管接头，符合SY/T5146-1997标准要求 [2]。2020年江苏永钢集团产品目录显示，该材料广泛应用于油服设备回转支承及阀体制造 [3]机械制造领域：适用于石油钻杆连接套、接头及大型机械轴类部件制造，与40CrMnMo共同构成重型装备关键材料体系 [3]跨行业应用：汽车制造中用于发动机曲轴、悬挂系统构件；船舶工业中用于甲板设备承载结构
生产工艺
播报编辑冶炼工艺采用LF精炼+VD真空脱气组合流程，终脱氧阶段添加FeAl合金（2.0Kg/t）改善钢液洁净度夹杂物控制技术：通过优化炉渣碱度（CaO/SiO₂比≥3.5）、强化氩气搅拌（流量≥400NL/min）、延长软吹时间（≥20分钟）等措施，使A/B类夹杂物评级≤2.0级，D类夹杂物完全消除轧制工艺参数：连铸坯加热温度920-960℃，终轧温度≥850℃，确保材料内部组织均匀性
质量改进研究
播报编辑2024年本溪特钢开展的工艺优化研究显示：通过调整终脱氧工艺（LF精炼结束前加FeAl2.0Kg/t，结束后补加FeAl1.7Kg/t），使四类夹杂物一次合格率达100%改进后的CaSi线喂入参数（速度120-150m/min，用量0.6Kg/t），将硫含量稳定控制在≤0.005%水平工艺优化后材料四项夹杂物一次合格率达100%，B类粗系夹杂物评级≤1.5级的比例提升至100%
标准体系
播报编辑中国标准：GB/T 3077合金结构钢技术条件 [3]美国标准：SAE4137H（等效牌号）石油行业标准：API 6A井口装置规范 [3]日本标准：JIS G4053机械结构用合金钢 [3]
工程应用案例
播报编辑河钢集团生产的A牌号钢材，用于制造渤海油田φ139.7mm油井套管接头，服役压力等级达105MPa [2]2023年上海某钻井设备制造商采用该材料制造的加重钻杆，在南海东部油田实现井深6023米作业记录 [4]新手上路成长任务编辑入门编辑规则本人编辑我有疑问内容质疑在线客服官方贴吧意见反馈投诉建议举报不良信息未通过词条申诉投诉侵权信息封禁查询与解封©2025 Baidu 使用百度前必读 | 百科协议 | 隐私政策 | 百度百科合作平台 | 京ICP证030173号 京公网安备11000002000001号window.PAGE_DATA= 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37CrMnMo 37CrMnMo，化学成分，碳 C：0.35~0.38，性质，合金结构钢，特性及应用：37CrMnMo中碳低合金钢为石油钻杆连接套、接头用钢，与40CrMnMo化学成分近似，碳平均含量及P、S杂质含量较低。中文名 37CrMnMo 标    准 GB 化学成分 碳 C：0.35~0.38 性    质 合金结构钢37CrMnMo合金结构钢石油钻具及钎具用钢主要牌号有：EX30、SN2025、4145H、37CrMnMo、FF710、K24729等。应用领域：石油用钢要求具有高的纯净度、良好的强韧性和低温冲击性能，产品顶替进口。EX30、SN2025钢主要用于石油钻井钻具的牙轮钻头，37CrMnMo用于制造石油钻杆连接套，4145H主要用于石油钻杆和钻铤，FF710、K24729凿岩钎头、钎杆用钢。化学成分：碳 C：0.35~0.38硅 Si：0.15~0.35锰 Mn：0.85~1.00磷 P：≤0.015硫 S：≤0.008铬 Cr：0.90~1.20钼 Mo：0.28~0.33镍 Ni：≤0.25铜 Cu：≤0.25氮 N：≤90×10-6