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Effect of Heat Treatment Process on Microstructure and Properties of Plastic Mold Steel 3Cr2NiMo
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Danzhu FENG1, 2, Zhiqiang YANG3, Xiaoxuan HU1, 2, Jian HUANG1, 2
Angang Technology | 2026, (3) : 33 - 37
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Angang Technology | 2026, (3): 33-37
• Research and Development •
Effect of Heat Treatment Process on Microstructure and Properties of Plastic Mold Steel 3Cr2NiMo
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Danzhu FENG1, 2, Zhiqiang YANG3, Xiaoxuan HU1, 2, Jian HUANG1, 2
Affiliations
  • 1.State Key Laboratory of Metallic Materials for Marine Equipment and Applications, Anshan 114009, Liaoning, China
  • 2.Ansteel Iron & Steel Research Institutes, Anshan 114009, Liaoning, China
  • 3.Cold Rolled Strip Steel Mill of Angang Steel Co., Ltd., Anshan 114021, Liaoning, China
doi: 10.3969/j.issn.1006-4613.2026.03.006
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The effect of different normalizing and tempering temperatures on the microstructure and mechanical properties of plastic mold steel 3Cr2NiMo was studied. The results showed that after normalizing at 810 ℃ and 840 ℃, the martensite lath was short and fine needle shaped with uniform structure, and the original austenite grain size was Grade 11. After normalizing at 900 ℃, the microstructure became coarse, and the original austenite grain size was Grade 9. The normalizing hardness increased first and then decreased with the increase of temperature. It was determined that the appropriate normalizing temperature of the test steel was 840 ℃. When the tempering temperature ranged from 450 ℃ to 500 ℃, the microstructure was tempered troostite, and the lath structure maintained the original martensite orientation. When the tempering temperature was increased to 650 ℃, the microstructure was tempered sorbate without obvious orientation. Subsequently, the carbides became spherical, aggregate and grow, while remaining uniformly dispersed. Moreover, the lath boundaries appeared blurred. The hardness of the test steel decreased with the increase of tempering temperature.

normalizing process  /  tempering process  /  microstructure  /  mechanical properties
冯丹竹, 杨志强, 胡筱旋, 黄健. 热处理工艺对塑料模具钢3Cr2NiMo组织性能的影响. 鞍钢技术, 2026 , (3) : 33 -37 . DOI: 10.3969/j.issn.1006-4613.2026.03.006
Danzhu FENG, Zhiqiang YANG, Xiaoxuan HU, Jian HUANG. Effect of Heat Treatment Process on Microstructure and Properties of Plastic Mold Steel 3Cr2NiMo[J]. Angang Technology, 2026 , (3) : 33 -37 . DOI: 10.3969/j.issn.1006-4613.2026.03.006
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Year 2026 volume Issue 3
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doi: 10.3969/j.issn.1006-4613.2026.03.006
  • Online Date：2026-09-20
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  • Revised：2025-04-12
Affiliations
    1.State Key Laboratory of Metallic Materials for Marine Equipment and Applications, Anshan 114009, Liaoning, China
    2.Ansteel Iron & Steel Research Institutes, Anshan 114009, Liaoning, China
    3.Cold Rolled Strip Steel Mill of Angang Steel Co., Ltd., Anshan 114021, Liaoning, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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