A novel process for manufacturing spur gear with uniform microstructure and excellent strength-ductility synergy by warm mold continuous casting

Yang, Yaohua; An, Yale; Li, Xuefeng; Jiang, Zizheng

doi:10.1016/j.jmatprotec.2022.117626

Cited by 6 publications

(2 citation statements)

References 20 publications

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“…The provisions of the castings must be considered in the manufacture of cast iron so that the resulting castings function properly according to the provisions. The casting provisions include the function of the cast difference, the required strength, the required hardness, and the problem of economic prices [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Nodular Graphite on Hardness and Toughness in Permanent Molds Made of Ferro Casting Ductile

Yulianto,

Darmawan,

Anggono

et al. 2024

J. Phys.: Conf. Ser.

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The permanent mold was made of Ferro Casting Ductile as a result of sand casting. Permanent mold is mold that can be used repeatedly. This permanent mold is used to produce tensile test specimens. Tensile test specimens are made of gray cast iron. This study aims to determine and analyze the effect of spheroidal graphite on the hardness and toughness of Ferro Casting Ductile in permanent molds to make tensile test specimens. The casting process starts by making patterns using Styrofoam, making molds with green-sand sand molds, followed by pouring molten cast iron into the molds. The next process is dismantling the castings and machining to get a permanent mold according to the dimensions. Specimens for testing the chemical composition were obtained from the results of castings into spherical dies. Meanwhile, the impact, hardness, and microstructure specimens were taken from the permanent molded product. The results of the chemical composition test showed that Ferro Casting Ductile contained several main elements, namely 92.14 %Fe, 3.681 %C, 3.715 %Si, 0.182 %Mn, 0.050 %Ni, and 0.034 %Mg which affected the percentage of nodular graphite. Nodular graphite will affect the hardness of the permanent mold. Validation was carried out by testing the hardness at 3 different points 167.70 VHN, 162.77 VHN, and 155.77 VHN. Toughness was obtained from the impact test using the Charpy method, the impact values were 0.048 Joule/mm2 0.046 Joule/mm2 0.037 Joule/mm2 on 3 different specimens. From the test results, the specimen has met the FCD 400 standard.

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Section: Introductionmentioning

confidence: 99%

The Effect of Nodular Graphite on Hardness and Toughness in Permanent Molds Made of Ferro Casting Ductile

Yulianto,

Darmawan,

Anggono

et al. 2024

J. Phys.: Conf. Ser.

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“…Nucleation and growth kinetics were coupled to the macroscopic heat transfer equation through the latent heat evolution. Te infuences of mold temperature and casting speed on the temperature feld, microstructures, and mechanical properties were investigated by numerical simulation and experimentation in the work [5]. As a result, cylindrical samples with high surface quality, dimensional accuracy, and uniform microstructure were successfully obtained.…”

Section: Introductionmentioning

confidence: 99%

Research Thermal Fields in the Crystallization Process of Steel Cast Parts

Liutyi

Petryk

Mogylatenko

et al. 2022

Advances in Materials Science and Engineering

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In foundry production, the duration of metal crystallization of the cast part, as well as the distribution of the thermal field, are described by systems of analytical equations. There are a number of methods for modeling these processes, but their theoretical basis was formed at the end of the twentieth century, and it needs to be updated and clarified. Therefore, the aim of our work is to develop a new analytical method for researching the distribution of thermal fields in cast parts during crystallization. For the first time, on the basis of own analytical and thermophysical developments, it developed the analytical method for researching the thermal field of the casting during crystallization and cooling, which is based on establishing the kinetics of cooling of the casting surface in the foundry mold, the advancement of the crystallization front from the surface to the center of the casting, and the distribution of temperatures in the solid and liquid parts of the casting. The method is expressed in a number of analytical formulas, each of which describes the specific thermal process that occurs in the casting. The developed analytical method was used to research the crystallization of the casting in a one-time sand mold, using the example of researching the thermal field of the cast part made of carbon steel with 0.25% C, hollow cylindrical shape, with the wall thickness of 100 mm. The developed analytical method for researching the thermal fields of cast parts is the analytical basis for the refinement of applied computer programs for modeling crystallization and cooling processes in foundry production.

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Metal flowing and microstructure characteristics of the micro inner gear ring fabricated by rheological extrusion

Jiang,

Dong,

Zhang

et al. 2024

Int J Adv Manuf Technol

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A novel process for manufacturing spur gear with uniform microstructure and excellent strength-ductility synergy by warm mold continuous casting

Cited by 6 publications

References 20 publications

The Effect of Nodular Graphite on Hardness and Toughness in Permanent Molds Made of Ferro Casting Ductile

The Effect of Nodular Graphite on Hardness and Toughness in Permanent Molds Made of Ferro Casting Ductile

Research Thermal Fields in the Crystallization Process of Steel Cast Parts

Metal flowing and microstructure characteristics of the micro inner gear ring fabricated by rheological extrusion

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