Effect of Heat Treatment Process on Microstructure and Properties of Steel 4330MOD for Fracturing Pump Valve Body
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摘要: 为提高压裂泵阀体的强度和韧性,研究了不同热处理工艺对改进型4330钢组织及力学性能的影响。结果表明:4330MOD钢通过添加微合金元素及调质工艺优化能够提高强度和韧性。微合金元素Nb、V,正火+调质工艺能够降低晶粒尺寸,提高强韧性。4330MOD钢在550℃～700℃回火时,组织为回火索氏体组织,随回火温度的升高强度降低,韧性先升高后降低,在600℃～650℃回火强韧性匹配较好。4330MOD钢通过微合金元素添加及热处理工艺优化使晶粒尺寸及板条块宽度细小,大角度晶界比例高,从而提高了钢的强韧性。Abstract: In order to improve the strength and toughness of fracturing pump valve body, the effect of different heat treatment processes on the microstructure and mechanical properties of improved 4330 steel are studied. The results show that the strength, toughness of 4330MOD steel can be improved by adding microalloying elements and optimizing the quenching and tempering process. Microalloying elements Nb and V, normalizing and tempering process can reduce grain size and improve strength and toughness. When 4330MOD steel is tempered at 550℃~700℃, the microstructure is tempered sortensite structure, strength decreases with the increase of tempering temperature, toughness increases first and then decreases, tempering strength and toughness match well at 600℃~650℃. Through the addition of microalloying elements and optimization of heat treatment process, the grain size and the width of the strip are small, and the proportion of large Angle grain boundary is high, so as to improve the strength and toughness of the steel.
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Keywords:
- heat treatment process /
- fracturing pump /
- 4330MOD /
- microstructure /
- performance
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[1] 徐良乐,吴高明,斯庭智.石油压裂泵阀箱十字孔开裂原因分析及改进措施[J].金属热处理, 2018, 43(3):233-236. [2] 孙好文,隋明政.分析石油压裂泵阀箱十字孔的开裂原因及改进措施[J].中国石油和化工标准与质量, 2019, 39(20):30-31. [3] 哈曜,陈昌华,张龙群,等.4330锻件低温冲击功低的分析[J].物理测试, 2019, 37(1):24-28. [4] API Specification 6A.Specification for Wellhead and Tree Equipment[S].2019.11.
[5] 杨劼,任慧平,刘宗昌.15Cr12CuSiMoMn钢的奥氏体晶粒长大动力学[J].金属热处理, 2022, 47(2):53-58. [6] 胡芳忠,杨少朋,金国忠,等.淬火温度对Nb微合金化齿轮钢18CrNiMo7-6组织演变及力学性能的影响[J].金属热处理, 2022, 47(2):105-112. [7] 范仲涛,高秀华,袁国,等.轧后冷却和热处理工艺对Nb微合金化V140油井管用钢组织和性能的影响[J].金属热处理, 2020, 45(12):1-6. [8] 牛延龙,刘清友,贾书君,等.X80级高强低合金管线钢组织与冲击韧性[J].钢铁, 2019, 54(2):67-74. [9] 杨少朋,胡芳忠,尉文超,等.Nb微合金化对渗碳齿轮钢组织演变及接触疲劳性能的影响[J].表面技术, 2022, 51(1):358-367. [10] 周高斌,谢常胜,罗英,等.热老化对电熔增材16MND5钢组织和力学性能的影响[J].电焊机, 2019, 49(4):67-72. [11] 何西扣,刘正东,林肇杰.预备热处理对508-3钢奥氏体晶粒尺寸的影响[J].特殊钢, 2013, 34(4):67-69. [12] 石晓霞,任慧平,李晓,等.CrNi油井管回火脆性产生原因分析与探讨[J].热加工工艺, 2020, 49(8):160-164. [13] 袁志钟,戴起勋.金属材料学[M].3版.北京:化学工业出版社, 2019. [14] 沈俊昶,罗志俊,杨才福,等.低合金钢板条组织中影响低温韧性的"有效晶粒尺寸"[J].钢铁研究学报, 2014, 26(7):70-76. [15] LI S C, ZHU G M, KANG Y L.Effect of substructure on mechanical properties and fracture behavior of lath martensite in 0.1C-1.1Si-1.7Mn steel[J].Journal of Alloys&Compounds, 2016, 675:104-115.
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