The Experts below are selected from a list of 978 Experts worldwide ranked by ideXlab platform
Carl Blais - One of the best experts on this subject based on the ideXlab platform.
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effect of Green Machining on the tensile properties and fatigue strength of powder metallurgy sinter hardenable steel components
Materials Science and Engineering A-structural Materials Properties Microstructure and Processing, 2012Co-Authors: Jean Desbiens, Etienne Robertperron, Carl Blais, Francois ChagnonAbstract:Abstract A study was carried out to determine if Green Machining of powder metallurgy sinter-hardenable steel components had detrimental effect on their tensile properties as well as their fatigue resistance. Results show that tensile properties and axial fatigue resistance of Green machined specimens and specimens machined after sintering are statistically identical.
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Tensile properties of sinter hardened powder metallurgy components machined in their Green state
Powder Metallurgy, 2009Co-Authors: Etienne Robert-perron, Carl Blais, Sylvain PelletierAbstract:With the increasing demand for sinter hardened powder metallurgy components, there is a growing need to solve the poor Machining behaviour that characterises them. Approaches based on Green Machining appear promising to extend tool life and reduce Machining costs. The present study deals with the sintered properties of cylindrical tensile specimens Green machined. Results show that tensile properties of components machined in their Green state are identical to those of components machined after sintering.
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Drilling of high quality features in Green powder metallurgy components
Materials Science and Engineering A-structural Materials Properties Microstructure and Processing, 2007Co-Authors: Etienne Robert-perron, Carl Blais, Sylvain Pelletier, Yannig ThomasAbstract:With the increasing demand for sinter-hardened PM components, there is a growing need to solve the poor Machining behaviour that characterizes them. Approaches based on Green Machining appear promising to reduce Machining costs and compete favourably with other shaping processes. Advancements in binder/lubricant technologies have led to the development of high Green strength systems that enable Green Machining of high quality features. This study deals with the drilling of through holes in high Green strength PM components. Design of experiments has been used to optimize the drilling parameters as well as tool selection. The usage of optimum cutting conditions led to the generation of holes having excellent geometrical conformance.
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Machinability of Green Powder Metallurgy Components: Part II. Sintered Properties of Components Machined in Green State
Metallurgical and Materials Transactions A, 2007Co-Authors: Etienne Robert-perron, Carl Blais, Sylvain Pelletier, Yannig ThomasAbstract:The Green Machining process is virtually a must if the powder metallurgy (PM) industries are to solve the lower Machining performances associated with PM components. This process is known for lowering the rate of tool wear. Recent improvements in binder/lubricant technologies have led to high-Green-strength systems that enable Green Machining. Combined with the optimized cutting parameters determined in Part I of the study, the Green Machining of PM components seems to be a viable process for fabricating high performance parts on large scale and complete other shaping processes. This second part of our study presents a comparison between the Machining behaviors and the sintered properties of components machined prior to or after sintering. The results show that the radial crush strength measured on rings machined in their Green state is equal to that of parts machined after sintering.
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Machinability of Green Powder Metallurgy Components: Part I. Characterization of the Influence of Tool Wear
Metallurgical and Materials Transactions A, 2007Co-Authors: Etienne Robert-perron, Carl Blais, Sylvain Pelletier, Yannig ThomasAbstract:The Green Machining process is an interesting approach for solving the mediocre Machining behavior of high-performance powder metallurgy (PM) steels. This process appears as a promising method for extending tool life and reducing Machining costs. Recent improvements in binder/lubricant technologies have led to high Green strength systems that enable Green Machining. So far, tool wear has been considered negligible when characterizing the machinability of Green PM specimens. This inaccurate assumption may lead to the selection of suboptimum cutting conditions. The first part of this study involves the optimization of the Machining parameters to minimize the effects of tool wear on the machinability in turning of Green PM components. The second part of our work compares the sintered mechanical properties of components machined in Green state with other machined after sintering.
Sylvain Pelletier - One of the best experts on this subject based on the ideXlab platform.
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Tensile properties of sinter hardened powder metallurgy components machined in their Green state
Powder Metallurgy, 2009Co-Authors: Etienne Robert-perron, Carl Blais, Sylvain PelletierAbstract:With the increasing demand for sinter hardened powder metallurgy components, there is a growing need to solve the poor Machining behaviour that characterises them. Approaches based on Green Machining appear promising to extend tool life and reduce Machining costs. The present study deals with the sintered properties of cylindrical tensile specimens Green machined. Results show that tensile properties of components machined in their Green state are identical to those of components machined after sintering.
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Drilling of high quality features in Green powder metallurgy components
Materials Science and Engineering A-structural Materials Properties Microstructure and Processing, 2007Co-Authors: Etienne Robert-perron, Carl Blais, Sylvain Pelletier, Yannig ThomasAbstract:With the increasing demand for sinter-hardened PM components, there is a growing need to solve the poor Machining behaviour that characterizes them. Approaches based on Green Machining appear promising to reduce Machining costs and compete favourably with other shaping processes. Advancements in binder/lubricant technologies have led to the development of high Green strength systems that enable Green Machining of high quality features. This study deals with the drilling of through holes in high Green strength PM components. Design of experiments has been used to optimize the drilling parameters as well as tool selection. The usage of optimum cutting conditions led to the generation of holes having excellent geometrical conformance.
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Machinability of Green Powder Metallurgy Components: Part II. Sintered Properties of Components Machined in Green State
Metallurgical and Materials Transactions A, 2007Co-Authors: Etienne Robert-perron, Carl Blais, Sylvain Pelletier, Yannig ThomasAbstract:The Green Machining process is virtually a must if the powder metallurgy (PM) industries are to solve the lower Machining performances associated with PM components. This process is known for lowering the rate of tool wear. Recent improvements in binder/lubricant technologies have led to high-Green-strength systems that enable Green Machining. Combined with the optimized cutting parameters determined in Part I of the study, the Green Machining of PM components seems to be a viable process for fabricating high performance parts on large scale and complete other shaping processes. This second part of our study presents a comparison between the Machining behaviors and the sintered properties of components machined prior to or after sintering. The results show that the radial crush strength measured on rings machined in their Green state is equal to that of parts machined after sintering.
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Machinability of Green Powder Metallurgy Components: Part I. Characterization of the Influence of Tool Wear
Metallurgical and Materials Transactions A, 2007Co-Authors: Etienne Robert-perron, Carl Blais, Sylvain Pelletier, Yannig ThomasAbstract:The Green Machining process is an interesting approach for solving the mediocre Machining behavior of high-performance powder metallurgy (PM) steels. This process appears as a promising method for extending tool life and reducing Machining costs. Recent improvements in binder/lubricant technologies have led to high Green strength systems that enable Green Machining. So far, tool wear has been considered negligible when characterizing the machinability of Green PM specimens. This inaccurate assumption may lead to the selection of suboptimum cutting conditions. The first part of this study involves the optimization of the Machining parameters to minimize the effects of tool wear on the machinability in turning of Green PM components. The second part of our work compares the sintered mechanical properties of components machined in Green state with other machined after sintering.
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chip reclamation in Green Machining for high performance pm components
International Journal of Powder Metallurgy, 2007Co-Authors: Etienne Robertperron, Carl Blais, Sylvain Pelletier, Yannig Thomas, Sylvain StlaurentAbstract:With increasing demands to improve the perfwmmce of the powder metallurgy (PM) process, Green Machining appears as an interesting method to solve the problems related to the poor machinability of PM components. The chips formed during Green Machining of PM components are similar in size to the base powder; which allows for direct recycling. Reclamation of Green PMchips.is aprocess that can conceivably reduce material cost in the Production of hgh-quality PM components This study investigates the reclamation of chips formed during Green Machining of sinter-hardening (FLC-4608J components. The results show that up to 20 w/o of the chips can be odded to a compatible powder mie without signyicantly affecting compaction behavior and sintered properties.
Etienne Robertperron - One of the best experts on this subject based on the ideXlab platform.
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effect of Green Machining on the tensile properties and fatigue strength of powder metallurgy sinter hardenable steel components
Materials Science and Engineering A-structural Materials Properties Microstructure and Processing, 2012Co-Authors: Jean Desbiens, Etienne Robertperron, Carl Blais, Francois ChagnonAbstract:Abstract A study was carried out to determine if Green Machining of powder metallurgy sinter-hardenable steel components had detrimental effect on their tensile properties as well as their fatigue resistance. Results show that tensile properties and axial fatigue resistance of Green machined specimens and specimens machined after sintering are statistically identical.
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chip reclamation in Green Machining for high performance pm components
International Journal of Powder Metallurgy, 2007Co-Authors: Etienne Robertperron, Carl Blais, Sylvain Pelletier, Yannig Thomas, Sylvain StlaurentAbstract:With increasing demands to improve the perfwmmce of the powder metallurgy (PM) process, Green Machining appears as an interesting method to solve the problems related to the poor machinability of PM components. The chips formed during Green Machining of PM components are similar in size to the base powder; which allows for direct recycling. Reclamation of Green PMchips.is aprocess that can conceivably reduce material cost in the Production of hgh-quality PM components This study investigates the reclamation of chips formed during Green Machining of sinter-hardening (FLC-4608J components. The results show that up to 20 w/o of the chips can be odded to a compatible powder mie without signyicantly affecting compaction behavior and sintered properties.
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an integrated approach to the characterization of powder metallurgy components performance during Green Machining
Materials Science and Engineering A-structural Materials Properties Microstructure and Processing, 2005Co-Authors: Etienne Robertperron, Carl Blais, Sylvain Pelletier, Yannig Thomas, Martin DionneAbstract:Green Machining of powder metallurgy (P/M) components appears as an interesting procedure to solve the eternal problems associated with the poor Machining behaviour of porous metallic samples. With the increasing usage of sinter-hardenable powders for high performance applications, Green Machining is an attractive method to lower production costs and compete against other shaping processes. Green Machining is not a straightforward procedure. There is quite more to control in Green Machining than the cutting parameters. Several variables must be optimized to obtain adequate results in terms of surface finish, geometrical conformance and productivity. Other considerations such as density gradients in Green compacts also influence the final outcome of this process. This study presents a new technique, based on cutting force measurements during Green turning, to quickly and precisely characterize density gradients in powder metallurgy components. This new technique also allows the characterization of Green machinability. Moreover, this study shows that timing sprockets can be produced by Green Machining of gear blanks. Timing sprockets produced by this process show a surface finish comparable to that of powder metallurgy components machined after sintering.
Yannig Thomas - One of the best experts on this subject based on the ideXlab platform.
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Drilling of high quality features in Green powder metallurgy components
Materials Science and Engineering A-structural Materials Properties Microstructure and Processing, 2007Co-Authors: Etienne Robert-perron, Carl Blais, Sylvain Pelletier, Yannig ThomasAbstract:With the increasing demand for sinter-hardened PM components, there is a growing need to solve the poor Machining behaviour that characterizes them. Approaches based on Green Machining appear promising to reduce Machining costs and compete favourably with other shaping processes. Advancements in binder/lubricant technologies have led to the development of high Green strength systems that enable Green Machining of high quality features. This study deals with the drilling of through holes in high Green strength PM components. Design of experiments has been used to optimize the drilling parameters as well as tool selection. The usage of optimum cutting conditions led to the generation of holes having excellent geometrical conformance.
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Machinability of Green Powder Metallurgy Components: Part II. Sintered Properties of Components Machined in Green State
Metallurgical and Materials Transactions A, 2007Co-Authors: Etienne Robert-perron, Carl Blais, Sylvain Pelletier, Yannig ThomasAbstract:The Green Machining process is virtually a must if the powder metallurgy (PM) industries are to solve the lower Machining performances associated with PM components. This process is known for lowering the rate of tool wear. Recent improvements in binder/lubricant technologies have led to high-Green-strength systems that enable Green Machining. Combined with the optimized cutting parameters determined in Part I of the study, the Green Machining of PM components seems to be a viable process for fabricating high performance parts on large scale and complete other shaping processes. This second part of our study presents a comparison between the Machining behaviors and the sintered properties of components machined prior to or after sintering. The results show that the radial crush strength measured on rings machined in their Green state is equal to that of parts machined after sintering.
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Machinability of Green Powder Metallurgy Components: Part I. Characterization of the Influence of Tool Wear
Metallurgical and Materials Transactions A, 2007Co-Authors: Etienne Robert-perron, Carl Blais, Sylvain Pelletier, Yannig ThomasAbstract:The Green Machining process is an interesting approach for solving the mediocre Machining behavior of high-performance powder metallurgy (PM) steels. This process appears as a promising method for extending tool life and reducing Machining costs. Recent improvements in binder/lubricant technologies have led to high Green strength systems that enable Green Machining. So far, tool wear has been considered negligible when characterizing the machinability of Green PM specimens. This inaccurate assumption may lead to the selection of suboptimum cutting conditions. The first part of this study involves the optimization of the Machining parameters to minimize the effects of tool wear on the machinability in turning of Green PM components. The second part of our work compares the sintered mechanical properties of components machined in Green state with other machined after sintering.
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chip reclamation in Green Machining for high performance pm components
International Journal of Powder Metallurgy, 2007Co-Authors: Etienne Robertperron, Carl Blais, Sylvain Pelletier, Yannig Thomas, Sylvain StlaurentAbstract:With increasing demands to improve the perfwmmce of the powder metallurgy (PM) process, Green Machining appears as an interesting method to solve the problems related to the poor machinability of PM components. The chips formed during Green Machining of PM components are similar in size to the base powder; which allows for direct recycling. Reclamation of Green PMchips.is aprocess that can conceivably reduce material cost in the Production of hgh-quality PM components This study investigates the reclamation of chips formed during Green Machining of sinter-hardening (FLC-4608J components. The results show that up to 20 w/o of the chips can be odded to a compatible powder mie without signyicantly affecting compaction behavior and sintered properties.
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an integrated approach to the characterization of powder metallurgy components performance during Green Machining
Materials Science and Engineering A-structural Materials Properties Microstructure and Processing, 2005Co-Authors: Etienne Robertperron, Carl Blais, Sylvain Pelletier, Yannig Thomas, Martin DionneAbstract:Green Machining of powder metallurgy (P/M) components appears as an interesting procedure to solve the eternal problems associated with the poor Machining behaviour of porous metallic samples. With the increasing usage of sinter-hardenable powders for high performance applications, Green Machining is an attractive method to lower production costs and compete against other shaping processes. Green Machining is not a straightforward procedure. There is quite more to control in Green Machining than the cutting parameters. Several variables must be optimized to obtain adequate results in terms of surface finish, geometrical conformance and productivity. Other considerations such as density gradients in Green compacts also influence the final outcome of this process. This study presents a new technique, based on cutting force measurements during Green turning, to quickly and precisely characterize density gradients in powder metallurgy components. This new technique also allows the characterization of Green machinability. Moreover, this study shows that timing sprockets can be produced by Green Machining of gear blanks. Timing sprockets produced by this process show a surface finish comparable to that of powder metallurgy components machined after sintering.
Martin Dionne - One of the best experts on this subject based on the ideXlab platform.
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an integrated approach to the characterization of powder metallurgy components performance during Green Machining
Materials Science and Engineering A-structural Materials Properties Microstructure and Processing, 2005Co-Authors: Etienne Robertperron, Carl Blais, Sylvain Pelletier, Yannig Thomas, Martin DionneAbstract:Green Machining of powder metallurgy (P/M) components appears as an interesting procedure to solve the eternal problems associated with the poor Machining behaviour of porous metallic samples. With the increasing usage of sinter-hardenable powders for high performance applications, Green Machining is an attractive method to lower production costs and compete against other shaping processes. Green Machining is not a straightforward procedure. There is quite more to control in Green Machining than the cutting parameters. Several variables must be optimized to obtain adequate results in terms of surface finish, geometrical conformance and productivity. Other considerations such as density gradients in Green compacts also influence the final outcome of this process. This study presents a new technique, based on cutting force measurements during Green turning, to quickly and precisely characterize density gradients in powder metallurgy components. This new technique also allows the characterization of Green machinability. Moreover, this study shows that timing sprockets can be produced by Green Machining of gear blanks. Timing sprockets produced by this process show a surface finish comparable to that of powder metallurgy components machined after sintering.
