Researches on the Dual-Optimum Silica Powder for Investment Casting

Wang Murong; Bao Yankun; Wang Shouzhenq

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Researches on the Dual-Optimum Silica Powder for Investment Casting
Issue 4, Pages: 13-19(1989)
Published： 1989 ，
DOI：

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[1]王慕荣,包彦堃,王守正,苏勇.“双优”化精铸用石英粉的研制[J].特种铸造及有色合金,1989(04):13-19.

Wang Murong, Bao Yankun, Wang Shouzhenq. Researches on the Dual-Optimum Silica Powder for Investment Casting. [J]. Special Casting & Nonferrous Alloys (4):13-19(1989)
[1]王慕荣,包彦堃,王守正,苏勇.“双优”化精铸用石英粉的研制[J].特种铸造及有色合金,1989(04):13-19. DOI：

Wang Murong, Bao Yankun, Wang Shouzhenq. Researches on the Dual-Optimum Silica Powder for Investment Casting. [J]. Special Casting & Nonferrous Alloys (4):13-19(1989) DOI：

摘要

粉的级配与粒形、涂料的粘度与屈服值同时优化的“双优”石英粉是既保持“双峰”粉优点

又便于批量生产的优质粉。文中着重从流变学角度探讨球磨效率、参数影响及于、湿磨特点。生产试验表明:其铸件表面粗糙度可达Ra>1.25～2.5μm以上。

Abstract

The "dual-optimum" silica powder

which both in the size distribution and the particle shape and in the coating viscosity and the coating yield stress are optimum

not only maintains the good properties of the artificial bimodal distribution powder

but also is convenient in mass-production. The efficiency of ball grinding （ratio of fine powder increase）

the influence of milling parameters and the characteristics of wet as well as dry grinding have mainly been discussed in rheology. It is showed in practice that the smooth finish of rhe casting surface is Ra

1.25

.5um