Die Casting Defects of Castings from Silumin

2014 ◽  
Vol 510 ◽  
pp. 91-96 ◽  
Author(s):  
Ján Pasko ◽  
Stefan Gaspar ◽  
Juraj Ružbarský
Keyword(s):  
Automobile Industry ◽  
Die Casting ◽  
Casting Defects ◽  
Metal Mold ◽  
Die Castings

The production of die castings cast into a metal mold has in recent years achieved an expansive growth in the volume as well as the range of production and that is particularly in aviation and automobile industry. A primary criterion for achieving reliability, efficiency and quality of production is to ensure minimization of the castings defects occurrence. For this reason it is necessary to describe the type, scope and frequency of die castings defects and to define the cause of their occurrence.

Homogeneity of Aluminum Castings and Dependency on Increasing Pressure

2015 ◽  
Vol 669 ◽  
pp. 134-141
Author(s):  
Stefan Gaspar ◽  
Jan Pasko
Keyword(s):  
Automobile Industry ◽  
Die Casting ◽  
Mold Temperature ◽  
Melt Temperature ◽  
Aluminum Castings ◽  
Number Of Factors ◽  
Die Cast ◽  
Die Castings ◽  
The Impact

The production of die castings cast into a metal mold has in recent years achieved an expansive growth in the volume as well as the range of production and that is particularly in aviation and automobile industry. In the process of die casting the final quality of a cast is influenced by a great number of factors. The main factors of die casting are: pressing velocity, increase pressure, the melt temperature and the mold temperature. A primary criterion for achieving reliability, efficiency and quality of production is to ensure minimization of the castings defects occurrence in castings correct setting technological factors of die casting. The presented paper deals with the experimental assessment of the impact of increase pressure on the mechanical properties and homogeneity of a die cast.

Research on the Impact of Increase Pressure on the Homogeneity of the Cast in Die Casting Technology

2015 ◽  
Vol 1091 ◽  
pp. 77-82
Author(s):  
Stefan Gaspar ◽  
Jan Pasko ◽  
Slavko Pavlenko
Keyword(s):  
Automobile Industry ◽  
Die Casting ◽  
Mold Temperature ◽  
Melt Temperature ◽  
Velocity Increase ◽  
Number Of Factors ◽  
Die Cast ◽  
Die Castings ◽  
The Impact

The production of die castings cast into a metal mold has in recent years achieved an expansive growth in the volume as well as the range of production and that is particularly in aviation and automobile industry. In the process of die casting the final quality of a cast is influenced by a great number of factors. The main factors of die casting are: pressing velocity, increase pressure, the melt temperature and the mold temperature. A primary criterion for achieving reliability, efficiency and quality of production is to ensure minimization of the castings defects occurrence in castings correct setting technological factors of die casting. The presented paper deals with the experimental assessment of the impact of increase pressure on the mechanical properties and homogeneity of a die cast.

Quality Control System for Die Castings Based on Statistic Analysis

2012 ◽  
Vol 246-247 ◽  
pp. 918-923
Author(s):  
Xiao Fang Ruan
Keyword(s):  
Quality Control ◽  
Control System ◽  
Statistical Analysis ◽  
Die Casting ◽  
Ferrous Metal ◽  
Casting Machine ◽  
Casting Process ◽  
Quality Control System ◽  
Die Castings

Die casting technology is applied widely for mass production of non-ferrous metal parts. How to guarantee the quality of die castings is always a concerned topic. A quality control system for die casting machine was developed based on statistical analysis of technology parameters. Firstly the original data is acquired from die casting machine and the technology curves are displayed. Secondly, the technology parameters are identified automatically and a database of technology parameters is established. Thirdly, a statistical analysis based on the database is performed. The statistics parameters of expecta -tion and deviation are figured out and the probability distribution diagrams for technology parameters are displayed. Finally, Tolerances for technology parameters are figured out and then the system will monitor the die casting process according to the tolerances. A practical system realization in a die casting machine is demonstrated by its monitoring interfaces. Statistical information and on-line monitoring provided by this system are helpful to guarantee the quality of die castings.

Effect of Temperature on the Properties of High Pressure Die Casting

2010 ◽  
Vol 649 ◽  
pp. 473-479 ◽  
Author(s):  
Jenő Dúl ◽  
Richárd Szabó ◽  
Attila Simcsák
Keyword(s):  
High Pressure ◽  
Data Acquisition ◽  
Die Casting ◽  
Data Acquisition System ◽  
Effect Of Temperature ◽  
High Pressure Die Casting ◽  
Die Castings ◽  
Pressure Die Casting ◽  
The Relationship

Quality of high pressure die castings is influenced by a lot of factors. Among them, the most important ones are the melt-, and die temperatures. This paper shows a data acquisition system, developed for measuring the melt and die temperatures and the results of the temperature measurements obtained under variable conditions. Evaluation of the relationship between the interrelated temperatures and the casting properties is based on analyzing the structure of the castings.

Numerical Simulations of Low Pressure Die-Casting for A356 Aluminum Rims

2017 ◽  
Vol 893 ◽  
pp. 276-280 ◽  
Author(s):  
Pei Hsing Huang ◽  
Wei Jen Wu ◽  
Chung Han Shieh
Keyword(s):  
Die Casting ◽  
Low Pressure ◽  
Optimization Of Process Parameters ◽  
Low Pressure Die Casting ◽  
Retained Melt Modulus ◽  
Porosity Defects ◽  
A356 Aluminum ◽  
Die Castings ◽  
Pressure Die Casting

This study conducted mold flow analyses on low pressure die-casting A356 aluminum rims to improve the shrinkage and porosity defects which usually occurs in die-castings so as to enhance the quality of die-casting wheels. We adopted different lift tube designs with cylindrical, taper opening and back taper opening structures while discussing the filling, exhaust, and solidification of molten flows and predicting the shrinkage and porosity formed based on the retained melt modulus. The study found that the configuration of lift tube as well as the optimization of process parameters such as the processing pressure and progressive time could effectively reduce the formations of shrinkage and porosity defects and improve the quality of die-castings.

THINCASTTM; Providing Strong, Lightweight Castings for Automobiles and Other Applications

2014 ◽  
Vol 217-218 ◽  
pp. 294-301
Author(s):  
Alois Franke ◽  
John L. Jorstad
Keyword(s):  
Heat Treatment ◽  
High Pressure ◽  
Die Casting ◽  
Casting Process ◽  
Engineering Properties ◽  
Traditional Process ◽  
Semi Solid ◽  
Die Castings ◽  
New Applications

Aluminium Rheinfelden has improved the competitiveness of semi solid processing by developing a casting process & alloy combination that is capable of ultra thin, ultra light parts having attractive engineering properties without need for full heat treatment. The THINCASTTM rheocasting process, together with Rheinfeldens Magsimal-59 alloy has been demonstrated capable of producing moderate sized castings with only 1-2 mm wall sections, thus providing a 30-50% reduction in traditional-process part weight. THINCASTTM can be adapted to a variety of die casting machines and will enable competitively improving the quality of conventional high pressure die castings as well as creating entirely new applications.

Increase Pressure and Homogeneity of Die Castings from EN AC 47100 Alloy

2015 ◽  
Vol 729 ◽  
pp. 108-113
Author(s):  
Stefan Gaspar ◽  
Jan Pasko
Keyword(s):  
Die Casting ◽  
Casting Process ◽  
Internal Quality ◽  
Control Methods ◽  
Technological Factors ◽  
Great Reliability ◽  
Die Casting Process ◽  
Die Castings ◽  
Pressure Die Casting

In the pressure die casting process, a great attention is paid to a die castings quality improvement. This quality has to be ensured with a great reliability and, at the same time, it is necessary to apply control methods to a technological process which provide a complete picture of a die casting process as well as internal quality of the produced die castings. It requires control of the present technological factors of a pressure die casting process. The contribution deals with the effect of die casting plunger velocity inside a filling chamber on mechanical properties of a die casting product from EN AC 47100 alloy.

scholarly journals Lost Cores for High-Pressure Die Casting

2014 ◽  
Vol 14 (2) ◽  
pp. 101-104 ◽  
Author(s):  
P. Jelínek ◽  
E. Adámková
Keyword(s):  
High Pressure ◽  
Automobile Industry ◽  
Die Casting ◽  
Pressure Casting ◽  
Important Criterion ◽  
Solubility In Water ◽  
Grain Surface ◽  
Pressure Die Casting ◽  
The Given

Abstract Development of salt cores prepared by high-pressure squeezing and shooting with inorganic binders has shown a high potential of the given technology even for high-pressure casting of castings. Strength, surface quality of achieved castings, and solubility in water become a decisive criterion. The shape and quality of grain surface particularly of NaCl - cooking salts that can be well applied without anticaking additives has shown to be an important criterion. Thus the salt cores technology can cover increasingly growing demands for casting complexity especially for the automobile industry.

COPPER ALLOY No. 878

Alloy Digest ◽  
1979 ◽  
Vol 28 (12) ◽  
Keyword(s):  
Fracture Toughness ◽  
Wear Resistance ◽  
Corrosion Resistance ◽  
Copper Alloy ◽  
Die Casting ◽  
Heat Treating ◽  
Casting Alloys ◽  
Copper Zinc ◽  
Die Castings ◽  
Very High

Abstract Copper Alloy No. 878 is a copper-zinc-silicon alloy for die castings. Among the brass die-casting alloys, it has the highest strength, hardness and wear resistance; however, it is the most difficult to machine. It is used where very high requirements must be met for strength and wear resistance. Its many applications include tools, pump impellers, gears and marine hardware. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on corrosion resistance as well as casting, heat treating, machining, and joining. Filing Code: Cu-386. Producer or source: Copper alloy producers.

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