Milling-Combined Laser Metal Sintering System and Production of Injection Molds with Sophisticated Functions

An efficient strategy (spontaneous deposition to enhance noble metal dispersity and core-shell confinement to inhibit the noble metal sintering) is presented to synthesize highly active and thermal stable Ru/ZrO2@SiO2 catalyst...

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Microstructure and Mechanical Properties of Samples Prepared by Direct Laser Metal Sintering with FGH95 Alloys

Chinese Journal of Lasers ◽

10.3788/cjl201138.0103003 ◽

2011 ◽

Vol 38 (1) ◽

pp. 0103003

Author(s):

凡进军 Fan Jinjun ◽

赵剑峰 Zhao Jianfeng

Keyword(s):

Mechanical Properties ◽

Microstructure And Mechanical Properties ◽

Direct Laser ◽

Metal Sintering

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Study of the Transmission System of Spreading Powder Device of Direct Metal Sintering Rapid Prototyping Machine

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.591-593.602 ◽

2012 ◽

Vol 591-593 ◽

pp. 602-605

Author(s):

Ye Liu ◽

Xin An Dang ◽

Li Jun Yang

Keyword(s):

Rapid Prototyping ◽

Transmission System ◽

Stepper Motor ◽

Necessary Condition ◽

Dynamic Parameters ◽

Operation Performance ◽

Main Structure ◽

Working Principle ◽

Metal Sintering

Direct metal sintering rapid prototyping mechanism is complex, including many kinds of transmission systems. Spreading powder device is important to direct metal sintering rapid prototyping mechanism. Based on grasping the working principle of the device, through the study of spreading powder device of direct metal rapid prototyping machine, grasp the process of spreading powder and the main structure of the device, and fabricate the simple model of the transmission system. In order to determine the necessary condition of how the spreading powder device functions, the dynamic parameters of the transmission system must be calculated, and the operation performance of the stepper motor must be checked. Then the precision and the processing quality of the finished part can be improved.

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Investigation of direct metal sintering process of iron powder with low laser power

Laser 3D Manufacturing V ◽

10.1117/12.2299654 ◽

2018 ◽

Author(s):

Prathan Buranasiri ◽

Setthanun Thongsuwan ◽

Assawin Ranusawas ◽

Pichet Limsuwan ◽

Saichon Jaiyen

Keyword(s):

Iron Powder ◽

Laser Power ◽

Sintering Process ◽

Metal Sintering

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Model catalyst studies of supported metal sintering and redispersion kinetics

Catalysis ◽

10.1039/9781847553225-00041 ◽

2007 ◽

pp. 41-82 ◽

Cited By ~ 9

Author(s):

Calvin H. Bartholemew

Keyword(s):

Model Catalyst ◽

Metal Sintering ◽

Supported Metal

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Reducing Weld Line by Heating Mold Surface with Heater Embedded by Laser Metal Sintering

International Journal of Automation Technology ◽

10.20965/ijat.2012.p0591 ◽

2012 ◽

Vol 6 (5) ◽

pp. 591-596 ◽

Cited By ~ 4

Author(s):

Takeshi Yoneyama ◽

◽

Satoshi Abe ◽

Michiru Miyamaru ◽

◽

...

Keyword(s):

Final Height ◽

Weld Line ◽

Injection Laser ◽

Cooling Time ◽

Mold Surface ◽

Sintering Process ◽

Cooling Temperature ◽

Metal Sintering

Thin micro sheath heaters are embedded just under the surface of a mold during the process of laser metal sintering. This is to reduce the weld line on the molded surface by heating it just before the injection. Laser metal sintering process was interrupted at a level just below the final height to make grooves into which to insert micro sheath heaters. After the heaters were installed, laser metal sintering continued over the heaters until the final mold height was reached. Through this process, micro heaters 1 mm in diameter were embedded 2 mm under the mold surface. The mold surface was heated to 20°C over the cooling temperature by the embedded heaters just before the injection, and heating was stopped after the injection. By so doing, the weld line on the molded surface was reduced, while the cooling time was the same as in molding without such heating.

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