Advance in the Rheological processing for clean and perfect castings

Xing Shuming LI Nan GUO Wenlong Wu xialing

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Advance in the Rheological processing for clean and perfect castings
Issue S1, Pages: 22-25(2008)
Published： 2008 ，
DOI：

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[1]邢书明,李楠,郭文龙.近净形高品质铸件流变成形技术进展[J].特种铸造及有色合金,2008(S1):22-25.

Xing Shuming LI Nan GUO Wenlong Wu xialing. Advance in the Rheological processing for clean and perfect castings. [J]. Special Casting & Nonferrous Alloys (S1):22-25(2008)
[1]邢书明,李楠,郭文龙.近净形高品质铸件流变成形技术进展[J].特种铸造及有色合金,2008(S1):22-25. DOI：

Xing Shuming LI Nan GUO Wenlong Wu xialing. Advance in the Rheological processing for clean and perfect castings. [J]. Special Casting & Nonferrous Alloys (S1):22-25(2008) DOI：

摘要

近净形高品质铸件流变成形技术是利用液态或固液共存的半固态合金熔体的流变特性在外加压力作用下充型凝固

得到尺寸精确组织致密铸件的一种绿色铸造技术。近年来在理论方面的进展之一是根据能量耗散理论得到了涵盖液态和半固态的统一的表观粘度估算及其在成形过程的演变模型。该技术不仅在铝合金、铜合金等有色金属中获得了成功应用

在抗磨材料及其制品、结构合金钢等高熔点金属材料中的应用越来越多。今后的研究任务是进一步完善其工艺理论

扩大其应用范围。

Abstract

Rheological processing for clean and perfect castings is a green casting technology to obtain the perfect castings with high precision in dimension and fine quality in microstructure by means of a high pressure and favorable rheologic of the liquid or semisolid alloy melts. One of its advances in the recent years is the model of apparent viscosity based on the energy dissipation in the process. Applications of the technology are not limited to the nonferrous alloy with lower melting point. The uses in ferrous alloys is more and more such as the abrasion-resistant materials

lower alloy steels and high alloy steel. The further targets are to advance the process theory and to enlarge the using fields.