scholarly journals Parametric Cost Modelling for Investment Casting

2021 ◽  
pp. 386-392
Author(s):  
Marco Mandolini ◽  
Federico Campi ◽  
Claudio Favi ◽  
Paolo Cicconi ◽  
Michele Germani ◽  
...  
Keyword(s):  
Investment Casting ◽  
Cost Model ◽  
Casting Process ◽  
Raw Material ◽  
Activity Based Costing ◽  
Regression Methods ◽  
Material Cost ◽  
Cost Modelling ◽  
The Common ◽  
Material Price

AbstractThis paper presents a parametric cost model for estimating the raw material cost of components realized employing the investment casting process. The model is built using sensitivity analysis and regression methods on data generated by an analytic cost model previously developed and validated by the same authors. This is the first attempt of developing a parametric cost model for investment casting based on activity-based costing. The proposed cost model accounts component volume, material density and material price. The error in estimating the raw material cost for components whose volume is within the common range of investment casting is around 11%.

scholarly journals PENGARUH RAW MATERIALS COST DAN DIRECT LABOR COST TERHADAP COST OF PRODUCTION PADA UMKM DI KOTA BATAM

2021 ◽  
Vol 5 (2) ◽  
pp. 1-7
Author(s):  
Baru Harahap
Keyword(s):  
Quantitative Research ◽  
Raw Materials ◽  
Labor Cost ◽  
Raw Material ◽  
Labor Costs ◽  
Regression Methods ◽  
Material Costs ◽  
Material Cost ◽  
Independent Variable ◽  
The Cost

The purpose of this study was to find out whether the cost of raw materials and direct labor costs had an effect on the increase in production. In this quantitative research two types of variables are used, namely the independent variable is Raw Material Cost, Direct Labor Cost  and the dependent variable is Increased Production Results. Sampling is done by the technique used, namely purposive sampling. Data analysis using Classical Assumptions and Multiple Linear Regression methods. The results of the study were processed using SPSS 20, it can be seen that the Raw Material Cost has a tcount of 4.616 with a significance probability of 0.000, concluded that Raw Material Costs  partially have a positive and significant effect on Increasing Production Cost of Direct Labor Costs  has t count of 4.944 with a significance of 0,000 can be concluded that Direct Labor Costs  partially have a positive and significant effect on Increasing Production Results. The F test shows the Fcount value of 71,270 and significance of 0,000b means that there is a significant effect between Raw Material Costs  and Direct Labor Costs on Increasing Production Results.

scholarly journals LABORATORY PROCESS FOR THE RECLAIMING OF THE CERAMICS MOLD FROM THE INVESTMENT CASTING

2013 ◽  
Vol 10 (19) ◽  
pp. 19-23
Author(s):  
Luis Alcides Brandini DE BONI ◽  
Vagner CRIVELETTO ◽  
Marcos CAMANA
Keyword(s):  
Investment Casting ◽  
Raw Materials ◽  
Casting Process ◽  
Raw Material ◽  
Ceramic Mold ◽  
Particle Sizes ◽  
Ceramic Shell ◽  
Investment Casting Process ◽  
Different Diameters ◽  
By Products

Investment casting is a process used to produce parts with restricted dimensional tolerances so that after casting the parts require little or no finishing. This paper describes an experiment conducted to the reuse of by-products from the process of investment casting. Around 4kg of ceramic shell went through a process of crushing, magnetic separation of metals and screen classification, instead of being destined to the landfill. The material was separated on sieves of different diameters and grouped in two sets, one for the material of larger particle size and another for smaller particle sizes. Subsequently this material was used to produce a ceramic mold used in investment casting process, replacing the corresponding virgin raw material. The ceramic shell of the bunch produced by this technique, endured all stages of assembly, including the casting of steel (WCB) without break or crack. The reuse of raw materials in this experiment reached about 80% by weight of 4kg originally obtained.

PENGARUH HARGA DAN PEMAKAIAN PERSEDIAAN BAHAN BAKU TERHADAP VOLUME PRODUKSI PADA PT. KELOLA MINA LAUT DI GRESIK

MANAJERIAL ◽  
2018 ◽  
Vol 1 (1) ◽  
pp. 66
Author(s):  
BAYU YRI WIDHARTO
Keyword(s):  
Linear Regression ◽  
Hypothesis Testing ◽  
Multiple Linear Regression ◽  
Raw Materials ◽  
T Test ◽  
Raw Material ◽  
Analysis Tool ◽  
Production Volume ◽  
F Test ◽  
Material Price

The purpose of the research was to know the affect of many factors which affected to the production volume in PT. Kelola Mina Laut Gresik. What the price of raw materials was and the used of raw materials partially and simultan eously affected on the production volume. The analysis tool which used was a model of multiple linear regression. Hypothesis testing used t test and F test, both at the significant level 5%. Based of the analysis of research on PT Kelola Mina Laut Gresik. Partially, inventory raw material price had not significant effect on the production volume, consumption of raw material inventory affected significantly of the production volume. Inventory of raw material price and the use of raw material simultan eously affect significantly to the production volume.

scholarly journals Contribution of Cyanotoxins to the Ecotoxicological Role of Lichens

Toxins ◽  
2021 ◽  
Vol 13 (5) ◽  
pp. 321
Author(s):  
Dobri Ivanov ◽  
Galina Yaneva ◽  
Irina Potoroko ◽  
Diana G. Ivanova
Keyword(s):  
Research Methods ◽  
Raw Material ◽  
Modern Times ◽  
Effective Application ◽  
The World ◽  
The Common

The fascinating world of lichens draws the attention of the researchers because of the numerous properties of lichens used traditionally and, in modern times, as a raw material for medicines and in the perfumery industry, for food and spices, for fodder, as dyes, and for other various purposes all over the world. However, lichens being widespread symbiotic entities between fungi and photosynthetic partners may acquire toxic features due to either the fungi, algae, or cyano-procaryotes producing toxins. By this way, several common lichens acquire toxic features. In this survey, recent data about the ecology, phytogenetics, and biology of some lichens with respect to the associated toxin-producing cyanoprokaryotes in different habitats around the world are discussed. Special attention is paid to the common toxins, called microcystin and nodularin, produced mainly by the Nostoc species. The effective application of a series of modern research methods to approach the issue of lichen toxicity as contributed by the cyanophotobiont partner is emphasized.

scholarly journals FEM Simulations for the Optimization of the Inlet Gate System in Rapid Investment Casting Process for the Realization of Heat Exchangers

2021 ◽  
Author(s):  
D. Almonti ◽  
G. Baiocco ◽  
E. Mingione ◽  
N. Ucciardello
Keyword(s):  
Investment Casting ◽  
Heat Exchangers ◽  
Complex Geometry ◽  
Heat Pipes ◽  
Casting Process ◽  
Added Value ◽  
Cad Models ◽  
Gate System ◽  
Definition Of ◽  
Metallic Parts

AbstractOver the last decades, additive manufacturing (AM) has become the principal production technology for prototypes and components with high added value. In the production of metallic parts, AM allows producing complex geometry with a single process. Also, AM admits a joining of elements that could not be realized with traditional methods. In addition, AM allows the manufacturing of components that could not be realized using other types of processes like reticular structures in heat exchangers. A solid mold investment casting that uses printed patterns overcomes typical limitations of additive processes such as expensive machinery and challenging process parameter settings. Indeed, rapid investment casting provides for a foundry epoxy pattern reproducing the component to exploit in the lost wax casting process. In this paper, aluminium radiators with flat heat pipes seamlessly connected with a cellular structure were conceived and produced. This paper aims at defining and investigating the principal foundry parameters to achieve a defect-free heat exchanger. For this purpose, different device CAD models were designed, considering four pipes’ thickness and length. Finite element method numerical simulations were performed to optimize the design of the casting process. Three different gate configurations were investigated for each length. The numerical investigations led to the definition of a castability range depending on flat heat pipes geometry and casting parameters. The optimal gate configuration was applied in the realization of AM patterns and casting processes

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