scholarly journals Investigations of Properties of Wax Mixtures Used in the Investment Casting Technology – New Investigation Methods

2012 ◽  
Vol 12 (3) ◽  
pp. 133-138 ◽  
Author(s):  
J. Zych ◽  
J. Kolczyk ◽  
T. Snopkiewicz
Keyword(s):  
Investment Casting ◽  
Bending Strength ◽  
Temperature Influence ◽  
Plastic Properties ◽  
Temperature Function ◽  
Casting Technology ◽  
Investigation Methods ◽  
Kinetics Of

Abstract The results of testing of the selected group of wax mixtures used in the investment casting technology, are presented in the paper. The measurements of the kinetics of the mixtures shrinkage and changes of viscous-plastic properties as a temperature function were performed. The temperature influence on bending strength of wax mixtures was determined.

The Use of Local Raw Materials for the Manufacturing of Import Substitution Casting Products on Investment Casting Technology

2020 ◽  
Vol 1000 ◽  
pp. 447-453
Author(s):  
Hafid Abdullah ◽  
Sri Bimo Pratomo
Keyword(s):  
Investment Casting ◽  
Raw Materials ◽  
Import Substitution ◽  
Casting Process ◽  
Machining Process ◽  
Added Value ◽  
Casting Technology ◽  
Metal Pattern ◽  
Investment Casting Process ◽  
The Cost

The use of local raw materials for the manufacturing of import substitution casting products on investment casting technology has been done. Compared to the conventional casting process, investment casting has the advantage of being able to create a sophisticated casting product and produce a product that is near net shape, so it is no need machining process. The objective is as an effort to find an alternative method of making a quality casting product, has high added value with the utilization of local raw materials which available in Indonesia so that it can reduce the cost of production and dependence on imports of industrial raw materials which are very expensive in the investment casting process. The method of making casting products with investment casting process, including: pattern making, mould making, dewaxing, melting, pouring, finishing and testing. Investment casting technology has been successfully applied to the manufacture of rocker arm, impeller pump and turbine blade with the utilization of local raw materials ie: epoxy resin as a substitute for metal pattern, mixture wax of paraffin, and celo resin for the pattern of wax and zircon sand of Bangka island as coating slurry for ceramic mould. The discussion of this paper is expected to be a case of developing other casting products needed by Indonesia for industry such as: medical equipment, agricultural equipment, textile equipment, gun and small armaments, electronics, automotive and electrical components etc.

scholarly journals The Control of Solidification Kinetics of the Vacuum-cast Thin-wall Nickel-based Superalloys by Changing the Geometrical Characteristics of the Ceramic Mold

2013 ◽  
Vol 13 (4) ◽  
pp. 21-28 ◽  
Author(s):  
R. Cygan ◽  
D. Szeliga ◽  
P. Rokicki ◽  
J. Sieniawski ◽  
J.S. Suchy
Keyword(s):  
Casting Process ◽  
Ceramic Mold ◽  
Thin Wall ◽  
Aircraft Engines ◽  
Foundry Industry ◽  
Precision Casting ◽  
Geometrical Characteristics ◽  
Casting Technology ◽  
Solidification Kinetics ◽  
Kinetics Of

Abstract This paper provides an analysis of experimental research and results of investment casting process. Temperature field in a ceramic mold is one of the problems during numerical simulation. Reducing the costs of production in precision casting involves the reduction of scraps, which is one of the fundamental problems of the foundry industry. Reducing these costs is associated with optimization of precision casting technology of aircraft engines critical parts, including control of the solidification front in thin-walled castings of nickel super alloys cast in a vacuum. It is achieved by changing the geometrical characteristics of the ceramic mold. The results of the tests were used to optimize the industrial production of aircraft components in Precision Foundry of WSK Rzeszów. Temperature distribution gained in the conducted tests allowed verification and optimization of computer simulations.

scholarly journals Modern materials and technologies in the production of artificial casting

2021 ◽  
pp. 78-81
Author(s):  
S. S. Tkachenko ◽  
V. O. Yemelyanov ◽  
K. V. Martynov
Keyword(s):  
Investment Casting ◽  
Mass Production ◽  
Entire Range ◽  
Bending Strength ◽  
Silica Sol ◽  
Production Cycle ◽  
Feeding System ◽  
Model Composition ◽  
Refractory Coating ◽  
Aqueous Binder

The publication highlights the production of artistic castings by investment casting using combined ceramic molds. The features of the application of a refractory coating, duplex curing of ceramic shells, cutting of molds, removal of the model composition, annealing of ceramic molds, pouring and separation of the gating‑feeding system under conditions of mass production are considered. Hydrolyzed ethyl silicate (ETS) and aqueous alkaline silica sol are used as a binder. The hydrolysis is carried out with an acidic catalyst. The strength of forms on an aqueous binder before calcination (bending strength σi) is from 1.5 to 2 MPa. The presented technology allows flexible coverage of the entire range of art products. Castings weighing from 5 to 10 kg can be produced in one batch, which significantly reduces the production cycle.

Selective laser sintering of HIPS and investment casting technology

2009 ◽  
Vol 209 (4) ◽  
pp. 1901-1908 ◽  
Author(s):  
Jinsong Yang ◽  
Yusheng Shi ◽  
Qiwen Shen ◽  
Chunze Yan
Keyword(s):  
Investment Casting ◽  
Selective Laser Sintering ◽  
Laser Sintering ◽  
Casting Technology

scholarly journals The Influence of Benzoyl Peroxide on Gelation Rate of Silica Binder for Precision Casting

2013 ◽  
Vol 13 (2) ◽  
pp. 99-102
Author(s):  
M. Nadolski ◽  
Z. Konopka ◽  
M. Łągiewka ◽  
A. Zyska
Keyword(s):  
Benzoyl Peroxide ◽  
Colloidal Silica ◽  
Single Layer ◽  
Production Cycle ◽  
Drying Process ◽  
Precision Casting ◽  
Casting Technology ◽  
Shell Mould ◽  
Kinetics Of ◽  
Moulding Material

Abstract Substituting of ethyl silicate with ecologic sols of colloidal silica in the investment casting technology, resulting from the increased demands concerning environmental protection, caused the prolongation of production cycle for precision castings produced in multi-layer thin-walled ceramic shell moulds. Modification of Sizol 030 binder with benzoyl peroxide, proposed in the paper, was aimed at restriction of time needed for realization of a single layer of the shell mould, and by the same, of such a mould as a whole. Examination of kinetics of the drying process were held for the layers made of prepared moulding material and the influence of binder modification on the mould curing time was determined.

scholarly journals New Investigation Method of the Permeability of Ceramic Moulds Applied in the Investment Casting Technology / Nowa metoda oceny przepuszczalności form ceramicznych stosowanych w technologii wytapianych modeli

2013 ◽  
Vol 13 (2) ◽  
pp. 107-112 ◽  
Author(s):  
J. Zych ◽  
J. Kolczyk ◽  
T. Snopkiewicz
Keyword(s):  
Technological Process ◽  
Investment Casting ◽  
Solid Phase ◽  
Phase Fraction ◽  
Investigation Method ◽  
Grain Sizes ◽  
Casting Technology ◽  
The Matrix ◽  
Moulding Sand

Abstract The new investigation method of a permeability of ceramic moulds applied in the investment casting technology, is presented in the paper. Some concepts of performing permeability measurements are shown. Investigations in which the influence of the solid phase fraction in the liquid ceramic moulding sand (LCMS) on a permeability of a multi-layer ceramic mould were performed and discussed. The permeability was estimated during two the most important stages of the technological process: in the first - after wax melting and in the second - after mould annealing. Also an influence of the matrix grain sizes (material for sprinkling) on a ceramic mould permeability was estimated.

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