The Influence of Technology Head Shift Speed, Abrasive Kind and Granularity on Technology Head Vibration during Hard-to-Machine Material Cutting

2014 ◽  
Vol 1061-1062 ◽  
pp. 507-510
Author(s):  
Luba Bicejova ◽  
Slavko Pavlenko ◽  
Jozef Maščeník
Keyword(s):  
Manufacturing Process ◽  
Early Diagnostics ◽  
Machine Material ◽  
Shift Speed ◽  
Material Cutting

The submitted paper deals with examining the influence of technology head shift speed, abrasive kind and granularity on AWJ technology head vibration generation during manufacturing process of hard-to-machine material Hardox 500 of various thickness. The aim of the paper is to point at an early diagnostics and elimination of unwanted sources of vibration being generated on a technology head due to technological and technical parametre changes and a following design of optimal technological parametres for AWJ technology cutting.

Investigation on the Elemental Chip Formation Process in Hard-to-Machine Material Cutting

2014 ◽  
Vol 682 ◽  
pp. 504-509 ◽  
Author(s):  
A.A. Lasukov ◽  
P.A. Chazov ◽  
А.V. Barsuk
Keyword(s):  
Mechanical Properties ◽  
Formation Process ◽  
Chip Formation ◽  
Physical And Mechanical Properties ◽  
Cutting Process ◽  
Machine Material ◽  
Continuous Chip ◽  
Material Cutting

The mechanism of discontinuous chip formation has been studied less than the mechanism of continuous chip formation. However, when most modern materials having specific physical and mechanical properties are subject to machining, such processes are featured by discontinuous chip formation. The paper describes the basic dependencies of discontinuous chip parameters on machining modes. This is a trial undertaken to introduce an explanation of how the basic factors of the cutting process influence over parameters of chip formation.

Accuracy of Additive Manufactured Parts

2015 ◽  
Vol 661 ◽  
pp. 113-118 ◽  
Author(s):  
Thomas Rainer Neitzert
Keyword(s):  
Heat Transfer ◽  
Additive Manufacturing ◽  
Manufacturing Process ◽  
Process Variation ◽  
Constant Volume ◽  
Manufacturing Processes ◽  
Important Criterion ◽  
Machine Material ◽  
The Future ◽  
Build Environment

Additive manufacturing processes and materials are described with respect to their ability to generate finished products. The accuracy of produced parts is seen as an important criterion for this technology to compete with subtractive or constant volume technologies. From the existing literature can be concluded process variation is high and part accuracy is not better then IT grade 9. The manufacturing process itself is complex and dependent on a number of machine, material and geometry parameters. A better understanding of the heat transfer within the product build environment will assist in the future to improve the process and therefore the resulting parts’ accuracy.

Identifying groups of airborne particles by ordination

1994 ◽  
Vol 52 ◽  
pp. 856-857
Author(s):  
M. Shlepr ◽  
C. M. Vicroy
Keyword(s):  
Elemental Analysis ◽  
Energy Dispersive Spectroscopy ◽  
Manufacturing Process ◽  
Spatial Representation ◽  
Airborne Particles ◽  
Common Source ◽  
Data Set ◽  
Microelectronics Industry ◽  
Induced Changes ◽  
Source Materials

The microelectronics industry is heavily tasked with minimizing contaminates at all steps of the manufacturing process. Particles are generated by physical and/or chemical fragmentation from a mothersource. The tools and macrovolumes of chemicals used for processing, the environment surrounding the process, and the circuits themselves are all potential particle sources. A first step in eliminating these contaminants is to identify their source. Elemental analysis of the particles often proves useful toward this goal, and energy dispersive spectroscopy (EDS) is a commonly used technique. However, the large variety of source materials and process induced changes in the particles often make it difficult to discern if the particles are from a common source.Ordination is commonly used in ecology to understand community relationships. This technique usespair-wise measures of similarity. Separation of the data set is based on discrimination functions. Theend product is a spatial representation of the data with the distance between points equaling the degree of dissimilarity.

Water in the Vinegar Manufacturing Process

1952 ◽  
Vol 44 (3) ◽  
pp. 449-449
Author(s):  
Rudolph Allgeier ◽  
Reuben Wisthoff ◽  
Frank Hildebrandt
Keyword(s):  
Manufacturing Process

A Perspective on Low Molecular Weight Heparins in the Management of Thrombosis

1993 ◽  
Vol 13 (S 01) ◽  
pp. S5-S11 ◽  
Author(s):  
Debra Hoppensteadt ◽  
Jeanine Walenga ◽  
A Ahsan ◽  
O Iqbal ◽  
W Jeske ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Mechanism Of Action ◽  
Manufacturing Process ◽  
Laboratory Tests ◽  
Low Molecular Weight ◽  
Low Molecular Weight Heparins ◽  
Pharmacological Management

SummaryThe introduction of low molecular weight heparins has added a new dimension to the pharmacological management of thrombotic disorders. Because of different chemical and pharmacological characteristics, due to the manufacturing process, each LMWH should be considered as a distinct entitity and only be used for its given indication. A list of commercially available LMWHs is included. The mechanism of action of the LMWHs and their use in various disorders are discussed. Available laboratory tests for monitoring LMWHs are presented and their limitations pointed out.

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