Effect of Milling Time on Microstructure and Properties of TiC High Manganese Steel Bonded Carbide
- Vol. 54, Issue 2, Pages: 122-125(2024)
DOI: 10.7512/j.issn.1001-2303.2024.02.19
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齐丁丁,李恒,张永生,等.球磨时间对TiC高锰钢结硬质合金组织性能的影响[J].电焊机,2024,54(2):122-125.
QI Dingding, LI Heng, ZHANG Yongsheng, et al.Effect of Milling Time on Microstructure and Properties of TiC High Manganese Steel Bonded Carbide[J].Electric Welding Machine, 2024, 54(2): 122-125.
球磨工艺参数是影响TiC钢结硬质合金质量的重要因素。选取球磨时间作为研究对象,研究了球磨时间为20 h、24 h、28 h对TiC高锰钢结硬质合金组织和性能的影响,用于指导生产。结果表明,球磨时间由20 h增加至24 h、28 h以上,混合料粒径分布过600目的占比由44.51%增加至80%、83%,粒径分布更细,合金显微组织孔隙减少,抗弯强度由833 MPa增加至932 MPa、1 008 MPa;合金中的孔隙产生较多导致密度下降的原因是,烧结过程的氧化还原反应阶段产生CO、CO
2
气体未能够及时排出烧结体。在实际生产中,可通过适当增加球磨时间,改善TiC高锰钢结硬质合金的组织,提高其性能,获得质量更高的产品。
In this paper
the ball milling time in the production of steel-bonded cemented carbide was selected as the research object. The effects of ball milling time of 20 h
24 h and 28 h on the microstructure and properties of TiC high manganese steel-bonded cemented carbide were studied. The results show that the ball milling time increases from 20 h to more than 24 h and 28 h
the proportion of the particle size distribution of the mixture over 600 mesh increases from 44.51% to 80% and 83%
the particle size distribution is finer
the microstructure pores of the alloy decrease
and the bending strength increases from 833 MPa to 932 MPa and 1008 MPa.The more pores in the alloy lead to a decrease in density because the CO and CO
2
gases produced in the redox reaction stage of the sintering process cannot be discharged from the sintered body in time.In actual production
by appropriately increasing the ball milling time
the microstructure of TiC high manganese steel bonded carbide can be improved
its performance can be improved
and higher quality products can be obtained.
球磨时间TiC高锰钢结硬质合金微观组织力学性能
ball milling timeTiC high manganese steel bonded carbideMircostructureperformance
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