This paper describes the process of selective laser melting, the process of obtaining the compone... more This paper describes the process of selective laser melting, the process of obtaining the components of two types of Ti and stainless steel. The ability to select components according to the size that can be placed and processed directly on manufacturing plate or supports . Melting regime applied to each component and their manufacture, varying parameters for finding the correct components in order to manufacturing industrial and medical implants. Key words: Selective Laser Melting, Supports, Specimens, Scanning speed, Stainless Steel, Parameters.
One of the most important parameters which influences the human rescue tripod are the forces whic... more One of the most important parameters which influences the human rescue tripod are the forces which act upon it. To determine this parameter from the design stage is an important aspect to any designer. This paper comes with a mathematical model, on which this force can be easily determined. Keywords: influence, human rescue tripod, important, mathematical model;
Abstract: All industries, including food industry have seen spectacular developments in the exten... more Abstract: All industries, including food industry have seen spectacular developments in the extent of discovery of new materials with special properties. This paper provides a brief presentation of silicone elastomers used to manufacture some cake forms, to improve ...
Selective laser melting (SLM) is one of the most important technologies used when complex metalli... more Selective laser melting (SLM) is one of the most important technologies used when complex metallic parts need to be rapidly manufactured. There are some requirements related to the mechanical properties of the material, surface roughness, the accuracy of the manufactured part and the process control, in order to turn SLM process into a production technique. The presented work investigates if the SLM process, according to the state of the art, fulfills these manufacturing requirements, trying to show meantime few opportunities / applications of the metallic parts manufactured by means of SLM. The results of the developed research underline and recommend that compensation factors must be used, in order to get a good correlation between the SLM manufactured prototype and the CAD model dimensions. By doing so, the time needed for the Rapid Product Development process using the SLM manufacturing method will be significantly decreased. Finite element analysis (FEA) and Design Expert software were jointly used in order to determine the optimum process parameters and the compensation factors required to improve the accuracy of the SLM process. An interesting case study undertaken at the Technical University of Cluj-Napoca (TUCN) in cooperation with an industrial company from Romania, using our MTT Realizer II SLM 250 equipment is also presented in the paper . Key words: Additive Layer Manufacturing (ALM), Rapid Manufacturing (RM), Rapid Prototyping (RP), Selective Laser Melting (SLM), Finite Element Analysis (FEA)
This paper presents research related to obtaining bent tubular parts made of reinforced composite... more This paper presents research related to obtaining bent tubular parts made of reinforced composite materials using modern rapid manufacturing methods. Based on competitive prototyping, this paper presents a comparative study of two modern mould manufacturing methods. This paper is also presenting an innovative modern technology for manufacturing tubular folded and inflated parts made of fiber reinforced composite materials. Key words : tubes, composite materials, Rapid Prototyping, CAD, CAM
It is common knowledge that the investment casting process or “lost wax process” starts with a wa... more It is common knowledge that the investment casting process or “lost wax process” starts with a wax pattern. It is created by injecting wax into a mould cavity, where the pattern is an exact copy of the cast part with strict dimensional tolerances. It also has to allow for shrinkage of the material to be cast. This pattern is then dipped into a silica slurry bath. For a good surface finish, finer slurry and zircon sand is often used. The shell is then heated to dewax the mould, followed by firing and preheating before the molten metal is poured into the dewaxed cavity. A good understanding of the wax injection process is essential for good quality parts to be created. Key words : investment casting, modeling methodology, cost reduction, concurrent engineering
This paper describes the process of selective laser melting, the process of obtaining the compone... more This paper describes the process of selective laser melting, the process of obtaining the components of two types of Ti and stainless steel. The ability to select components according to the size that can be placed and processed directly on manufacturing plate or supports . Melting regime applied to each component and their manufacture, varying parameters for finding the correct components in order to manufacturing industrial and medical implants. Key words: Selective Laser Melting, Supports, Specimens, Scanning speed, Stainless Steel, Parameters.
One of the most important parameters which influences the human rescue tripod are the forces whic... more One of the most important parameters which influences the human rescue tripod are the forces which act upon it. To determine this parameter from the design stage is an important aspect to any designer. This paper comes with a mathematical model, on which this force can be easily determined. Keywords: influence, human rescue tripod, important, mathematical model;
Abstract: All industries, including food industry have seen spectacular developments in the exten... more Abstract: All industries, including food industry have seen spectacular developments in the extent of discovery of new materials with special properties. This paper provides a brief presentation of silicone elastomers used to manufacture some cake forms, to improve ...
Selective laser melting (SLM) is one of the most important technologies used when complex metalli... more Selective laser melting (SLM) is one of the most important technologies used when complex metallic parts need to be rapidly manufactured. There are some requirements related to the mechanical properties of the material, surface roughness, the accuracy of the manufactured part and the process control, in order to turn SLM process into a production technique. The presented work investigates if the SLM process, according to the state of the art, fulfills these manufacturing requirements, trying to show meantime few opportunities / applications of the metallic parts manufactured by means of SLM. The results of the developed research underline and recommend that compensation factors must be used, in order to get a good correlation between the SLM manufactured prototype and the CAD model dimensions. By doing so, the time needed for the Rapid Product Development process using the SLM manufacturing method will be significantly decreased. Finite element analysis (FEA) and Design Expert software were jointly used in order to determine the optimum process parameters and the compensation factors required to improve the accuracy of the SLM process. An interesting case study undertaken at the Technical University of Cluj-Napoca (TUCN) in cooperation with an industrial company from Romania, using our MTT Realizer II SLM 250 equipment is also presented in the paper . Key words: Additive Layer Manufacturing (ALM), Rapid Manufacturing (RM), Rapid Prototyping (RP), Selective Laser Melting (SLM), Finite Element Analysis (FEA)
This paper presents research related to obtaining bent tubular parts made of reinforced composite... more This paper presents research related to obtaining bent tubular parts made of reinforced composite materials using modern rapid manufacturing methods. Based on competitive prototyping, this paper presents a comparative study of two modern mould manufacturing methods. This paper is also presenting an innovative modern technology for manufacturing tubular folded and inflated parts made of fiber reinforced composite materials. Key words : tubes, composite materials, Rapid Prototyping, CAD, CAM
It is common knowledge that the investment casting process or “lost wax process” starts with a wa... more It is common knowledge that the investment casting process or “lost wax process” starts with a wax pattern. It is created by injecting wax into a mould cavity, where the pattern is an exact copy of the cast part with strict dimensional tolerances. It also has to allow for shrinkage of the material to be cast. This pattern is then dipped into a silica slurry bath. For a good surface finish, finer slurry and zircon sand is often used. The shell is then heated to dewax the mould, followed by firing and preheating before the molten metal is poured into the dewaxed cavity. A good understanding of the wax injection process is essential for good quality parts to be created. Key words : investment casting, modeling methodology, cost reduction, concurrent engineering
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Papers by P. Berce