Ultrasonic monitoring of injection molding and die casting

1996 ◽  
Author(s):  
Bin Cao ◽  
H. Wang ◽  
Cheng-Kuei Jen ◽  
N. T. Nguyen ◽  
J. Legoux ◽  
...  
Keyword(s):  
Injection Molding ◽  
Die Casting ◽  
Ultrasonic Monitoring

On-line ultrasonic monitoring of a die-casting process using buffer rods

Ultrasonics ◽  
1997 ◽  
Vol 35 (5) ◽  
pp. 335-344 ◽  
Author(s):  
C.-K. Jen ◽  
B. Cao ◽  
K.T. Nguyen ◽  
C.A. Loong ◽  
J.-G. Legoux
Keyword(s):  
Die Casting ◽  
Casting Process ◽  
Ultrasonic Monitoring ◽  
On Line ◽  
Die Casting Process

scholarly journals A Systematic Approach to Support Design for Manufacturability in Injection Molding and Die Casting

1995 ◽  
Author(s):  
Yuh-Shan Yueh ◽  
R. Allen Miller
Keyword(s):  
Injection Molding ◽  
Geometric Modeling ◽  
Geometric Model ◽  
Die Casting ◽  
Support Design ◽  
Strongly Coupled ◽  
Draw Direction ◽  
Design Cycle ◽  
Boundary Information ◽  
Modeling Data

Abstract In designing a part to be produced by injection molding or die casting, designers need to consider manufacturing characteristics of the part such as filling and ejectability from the dies as well as functional issues. The typical design cycle is iterative, laborious and time-consuming. In this paper, we present a procedure for defining parting information (locations where the mold/die come together), and recognizing the links between part design and die/mold construction. Many decisions and design details, such as draft on surfaces parallel to the draw (die opening) direction, gate and runner locations, vent locations, etc., depend on the parting locations and characteristics. Parting information is normally not part of the geometric model of the part design. Parting design, including draw direction and parting location, is addressed through a custom user interface which contains several options related to different levels of geometric modeling data. The resulting specification is stored in a segment structure which provides a flexible parting description and fits within the B-rep hierarchy. The reasoning about the linking of related surfaces is accomplished by splitting and traversing the extracted geometric entities based on parting definition. The entities covered by the same die/mold component are aggregated as a face group which is a set of complete or partial surfaces with the parting definition as the boundary information and with the draw direction as the moving information. In this approach, manufacturing information can be strongly coupled with geometric data to form a complete part model which supports manufacturability assessment and facilitates any necessary shape transformations to achieve a manufacturable part in a straightforward manner so that design iterations can be controlled and development cost can be reduced.

Effect of sintering mode on structure, phase composition and porosity of titanium alloy VT6 parts made by injection molding method of powder-polymer compounds

2020 ◽  
pp. 2-13
Author(s):  
A.B. Semyonov ◽  
◽  
A.N. Muranov ◽  
A.A. Kutsbakh ◽  
D.M. Krotov ◽  
...  
Keyword(s):  
Titanium Alloy ◽  
Phase Composition ◽  
Injection Molding ◽  
Die Casting ◽  
Polymer Mixture ◽  
Casting Method ◽  
Molding Method ◽  
Structure Phase ◽  
Pressure Die Casting

Changes in the structure and the phase composition of a part made of powder of domestic titanium alloy VT6 produced at JSC «SMK», by the pressure die casting method of a powder-polymer mixture have been studied. The changes take place due to a change in the sintering mode of the porous semi-finished product.

In-line ultrasonic monitoring of semi-solid magnesium die casting process

Ultrasonics ◽  
2004 ◽  
Vol 41 (10) ◽  
pp. 777-784 ◽  
Author(s):  
C.-K. Jen ◽  
J.-F. Moisan ◽  
C.-Q. Zheng ◽  
C.A. Loong ◽  
S.E. Kruger ◽  
...  
Keyword(s):  
Die Casting ◽  
Casting Process ◽  
Ultrasonic Monitoring ◽  
Die Casting Process ◽  
Semi Solid ◽  
Magnesium Die Casting

Multiple Parting Surfaces for Sand Casting

2004 ◽  
Author(s):  
Hemant Ramaswami ◽  
Sam Anand
Keyword(s):  
Injection Molding ◽  
Die Casting ◽  
Sand Casting ◽  
Gauss Maps

Multiple parting surfaces are frequently used in sand casting, die casting and injection molding processes. However, most research in this area has focused on die casting and injection molding. Parting surfaces for die casting and injection molding are relatively easier to compute compared to sand casting because their orientations and shapes are less restricted. In sand casting, the parting surfaces have to be parallel to each other and perfectly flat to permit the use of flasks with more than two pieces. The concepts of visibility and object illumination can be used to divide an object into two parts using a single parting surface. These methods, however, cannot be directly used for multiple parting surfaces. In this paper, a methodology to generate multiple parting surfaces for sand casting is described. The method uses Gauss maps to identify potential casting directions, and global accessibility cones to determine which faces can be cast in the same part of the pattern. The pattern is sliced using parallel planes such that each slice can be withdrawn from the mold in at least one direction. After the object is sliced, the number of parting surfaces is reduced by combining adjacent middle sections depending on their accessible directions.

The Machine Designs Behind Reference Free Part Encapsulation Fixturing

2001 ◽  
Author(s):  
Elmer Lee ◽  
Sanjay Sarma
Keyword(s):  
Injection Molding ◽  
Die Casting ◽  
Casting Process ◽  
Filler Material ◽  
Manufacturing Processes ◽  
Design Decisions ◽  
Free Part ◽  
Encapsulation Process ◽  
Die Casting Process

Abstract Reference Free Part Encapsulation (RFPE) is an automatic, universal workholding process developed by the researchers at MIT and Berkeley. In RFPE, a block of filler material encapsulates the workpiece and provides a fixturing surface, and after each machining operation, the filler block is re-filled with material to restore it to a perfect block. This paper shall describe the machines developed to test and demonstrate the theories and practices described by Reference Free Part Encapsulation. This paper will show the similarities of the encapsulation process to such manufacturing processes as die casting and injection molding. However, it shall also show that many intrinsic differences exist between the encapsulation process and an injection molding or die casting process. Two encapsulation machines will be presented. The first is a larger encapsulation machine capable of forming encapsulations with a 6″ by 6″ footprint. The second, a much smaller portable machine, capable of forming encapsulations with a 2″ by 2″ footprint, will also be presented. Special features of each encapsulation machine shall be highlighted and various design decisions shall be discussed.

CASCADE

Alloy Digest ◽  
1986 ◽  
Vol 35 (10) ◽  
Keyword(s):  
Injection Molding ◽  
Physical Properties ◽  
Precipitation Hardening ◽  
Die Casting ◽  
High Strength ◽  
Heat Treating ◽  
Steel Company ◽  
Heat Checking ◽  
Resistance To Heat ◽  
Wide Usage

Abstract CASCADE is a precipitation-hardening steel which is very popular as a mold steel for injection molding of thermoplastics. It is also an excellent choice for many zinc die-casting dies because of its resistance to heat checking and wash. A further wide usage for Cascade is as a holding-block material for die-casting dies and molds for plastics when high strength is mandatory. This datasheet provides information on composition, physical properties, hardness, and elasticity. It also includes information on heat treating, machining, joining, and surface treatment. Filing Code: TS-15. Producer or source: Latrobe Steel Company. Originally published December 1953, revised January 1962, October 1986.

On-line ultrasonic monitoring of the injection molding process

1997 ◽  
Vol 37 (2) ◽  
pp. 363-376 ◽  
Author(s):  
H. Wang ◽  
B. Cao ◽  
C. K. Jen ◽  
K. T. Nguyen ◽  
M. Viens
Keyword(s):  
Injection Molding ◽  
Injection Molding Process ◽  
Ultrasonic Monitoring ◽  
Molding Process ◽  
On Line
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