Some aspects of machining cast Al-SiCp composites with conventional high speed steel and tungsten carbide tools

1999 ◽  
Vol 8 (5) ◽  
pp. 538-542 ◽  
Author(s):  
P. Narahari ◽  
B. C. Pai ◽  
R. M. Pillai
Keyword(s):  
Tungsten Carbide ◽  
High Speed ◽  
High Speed Steel ◽  
And Tungsten

scholarly journals Influence of Tool Status on Flexural Strength of Machined CFRP Components

2001 ◽  
Vol 10 (4) ◽  
pp. 096369350101000 ◽  
Author(s):  
J. Ramkumar ◽  
R. Krishnamurthy ◽  
S.K. Malhotra
Keyword(s):  
Acoustic Emission ◽  
Flexural Strength ◽  
Carbon Fibre ◽  
Tungsten Carbide ◽  
High Speed ◽  
High Speed Steel ◽  
Higher Order ◽  
Reinforced Plastics ◽  
Carbon Fibre Reinforced Plastics ◽  
And Tungsten

Machining trials have been carried out on Carbon Fibre Reinforced Plastics (CFRP) High Speed Steel (HSS) traditional & modified point geometry and Tungsten Carbide (WC) tipped drills. Among the drills, modified point geometry out performed others by sustaining higher order life. This has been supported by monitoring thrust, torque and Acoustic Emission (AE) during drilling trials.

NIROSTA 4305

Alloy Digest ◽  
2002 ◽  
Vol 51 (5) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Physical Properties ◽  
Tungsten Carbide ◽  
Tensile Properties ◽  
High Speed ◽  
High Speed Steel ◽  
Heat Treating ◽  
Austenitic Steels ◽  
High Sulfur Content ◽  
Machined Parts

Abstract NIROSTA 4305 is an austenitic alloy with a high sulfur content. The alloy is typically used for machined parts. As with other austenitic steels, it is necessary to machine with good-quality high-speed steel or tungsten carbide tools. This datasheet provides information on composition, physical properties, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-854. Producer or source: ThyssenKrupp Nirosta GmbH.

A Micro-Deposition Method by Using EDM

2007 ◽  
Vol 339 ◽  
pp. 32-36 ◽  
Author(s):  
Bai Dong Jin ◽  
Guo Hui Cao ◽  
Zhen Long Wang ◽  
Wan Sheng Zhao
Keyword(s):  
Electrode Material ◽  
High Speed ◽  
Steel Surface ◽  
High Speed Steel ◽  
Processing Parameters ◽  
Tool Electrode ◽  
Micro Edm ◽  
Deposition Method ◽  
Basic Principles ◽  
And Tungsten

A new micro EDM method is described. First, the basic principles of micro EDD are analyzed and realized conditions are predicted. Then with an ordinary EDM shaping machine and electrode brass, steel and tungsten, a large number of experiments are carried out in air to obtain the effects of different processing parameters on micro EDD. A micro cylinder with 0.19mm in diameter and 7.35mm in height is formed on high-speed steel surface. By exchanging the polarities of electrode and workpiece the deposited material can be removed selectively, thus the reversible machining is realized. In the end, measurements show that the deposited material is compact and hardened, whose components depend on the tool electrode material although Zn in brass electrode is oxidized to ZnO.

Criticism of Radioactive Tool-Life Testing

1963 ◽  
Vol 85 (4) ◽  
pp. 381-385 ◽  
Author(s):  
N. H. Cook ◽  
A. B. Lang
Keyword(s):  
Tool Wear ◽  
Tungsten Carbide ◽  
Tool Life ◽  
High Speed ◽  
High Speed Steel ◽  
Cutting Conditions ◽  
Life Testing ◽  
Wear Tests ◽  
Lathe Tool

Tungsten carbide and high-speed-steel lathe tool wear tests, carried out by conventional means and by radioisotope techniques, are compared. When the irradiated tool is used to cut under only one set of conditions, good correlation is obtained between the two methods. When the irradiated tool is used under a variety of cutting conditions, correlation is poor. If a single tool is used under different cutting conditions, it is doubtful if differences of less than 2:1 are significant.

Wear Performance Evaluation of Tungsten Carbide Taps in Blind Hole Tapping Cast Iron

2010 ◽  
Vol 126-128 ◽  
pp. 755-759 ◽  
Author(s):  
Ming Chen ◽  
Xiao Hui Zhang ◽  
Bing Han ◽  
Bin Rong ◽  
Gang Liu
Keyword(s):  
Cast Iron ◽  
Tungsten Carbide ◽  
High Speed ◽  
Cutting Speed ◽  
High Speed Steel ◽  
Ductile Cast Iron ◽  
Cutting Performance ◽  
Production Lines ◽  
High Speed Cutting ◽  
Ticn Coating

The engineblock and cylinderhead of automobile are usually made of cast iron, and tapping of blind holes is one of the most demanding operations. As usual, tapping is the final process for an engineblock, and the failure of taps can disable the engineblock possibly. The productivity is restricted because of the low cutting speed and poor wear resistance of high speed steel (HSS) taps. Thereby, according to the demand on high speed cutting and low tact time of modern engine production lines, several new typical special tungsten carbide taps are developed and their cutting performance are evaluated in comparison with the commercial taps. In the process of tapping blind holes in gray cast iron and ductile cast iron, several aspects are studied comparatively such as wear mechanism of the first complete and the last incomplete tooth, tap structure, wear of TiCN coating and effects of coolant on cutting performance of taps. This study indicates that straight coated taps with fewer flutes are suitable for high speed tapping of cast iron.

Deformations and Strength of Miniature Drills

2006 ◽  
Vol 220 (3) ◽  
pp. 389-396 ◽  
Author(s):  
L A Kudla
Keyword(s):  
Mechanical Properties ◽  
Tungsten Carbide ◽  
Failure Rate ◽  
High Speed ◽  
High Speed Steel ◽  
Complex Load ◽  
Basic Part ◽  
Twist Drills ◽  
Precise Assessment ◽  
Practical Investigation

The strength of drills with diameters of less than 1 mm may be insufficient for effective realization of microdrilling operations. As a consequence very small and fragile tools frequently suffer breakage. The precise assessment of their mechanical properties gives the opportunity to reduce the failure rate. This paper describes the results of a practical investigation into the deformations and the strength of the miniature drills in the case of bending, torsion, and complex load. The main shapes of the cutting part and both high-speed steel and tungsten carbide drills were examined. A basic part of the paper is dedicated to the twist drills, because the majority of microdrilling operations is done just with these tools.

Sign in / Sign up

Export Citation Format

Share Document