Specification for hard metal for wire, bar and tube drawing dies

1968 ◽  
Keyword(s):  
Hard Metal ◽  
Tube Drawing ◽  
Drawing Dies

The elastic behaviour of tube drawing dies subjected to a sinking process

1967 ◽  
Vol 2 (2) ◽  
pp. 134-136
Author(s):  
B Kenny
Keyword(s):  
Outer Surface ◽  
Elastic Behaviour ◽  
Theoretical Expression ◽  
Strain Gauges ◽  
Hoop Strain ◽  
Analysis Study ◽  
Tube Drawing ◽  
Drawing Die ◽  
Drawing Dies ◽  
Strain Hardening Rate

A numerical stress analysis study of a tube drawing die of conical profile is used in conjunction with a theoretical expression predicting die pressures in a sinking process, to obtain hoop strain information for the outer surface of a tube drawing die. The analysis indicates that material strain hardening rate and coefficient of friction both affect the hoop strain distributions, but their separate effects may be measured individually by appropriate positioning of strain gauges on the outer surface of the die.

Stress analysis and calibration of tube drawing dies

1963 ◽  
Vol 5 (5) ◽  
pp. 371-IN2 ◽  
Author(s):  
J.P. Duncan ◽  
B. Kenny ◽  
G.G. Moore
Keyword(s):  
Stress Analysis ◽  
Tube Drawing ◽  
Drawing Dies

INTERNAL FRICTION OF WC-Co HARD METAL

1987 ◽  
Vol 48 (C8) ◽  
pp. C8-471-C8-476
Author(s):  
J. J. AMMANN ◽  
R. SCHALLER
Keyword(s):  
Internal Friction ◽  
Hard Metal

SEM and EBSD Characterization of Bi-Layered Functionally Graded Hard Metal Composites

2016 ◽  
Vol 53 (11) ◽  
pp. 696-710 ◽  
Author(s):  
O. Prat ◽  
S. Suarez ◽  
J. García ◽  
F. Sanhueza
Keyword(s):  
Hard Metal ◽  
Functionally Graded ◽  
Metal Composites

scholarly journals Wear in hard metal check valves: In-situ surface modification through tribolayer formation in dry contact

Vacuum ◽  
2021 ◽  
pp. 110482
Author(s):  
A. Blutmager ◽  
M. Varga ◽  
U. Cihak-Bayr ◽  
W. Friesenbichler ◽  
P.H. Mayrhofer
Keyword(s):  
Surface Modification ◽  
Hard Metal ◽  
Dry Contact

scholarly journals Effect of Digital Technologies on the Marginal Accuracy of Conventional and Cantilever Co–Cr Posterior-Fixed Partial Dentures Frameworks

2021 ◽  
Vol 11 (7) ◽  
pp. 2988
Author(s):  
Celia Tobar ◽  
Verónica Rodríguez ◽  
Carlos Lopez-Suarez ◽  
Jesús Peláez ◽  
Jorge Cortés-Bretón Brinckmann ◽  
...  
Keyword(s):  
Digital Technologies ◽  
Hard Metal ◽  
Direct Metal Laser Sintering ◽  
Cobalt Chromium ◽  
Metal Ceramic ◽  
Marginal Discrepancy ◽  
Soft Metal ◽  
Manufacturing Techniques ◽  
Ceramic Restorations ◽  
To Receive

The introduction of new digital technologies represents an important advance to fabricate metal–ceramic restorations. However, few studies have evaluated the influence of these technologies on the fit of the restorations. The aim of this study was to evaluate the effect of different manufacturing techniques and pontic design on the vertical marginal fit of cobalt–-chromium (Co–Cr) posterior fixed partial dentures (FPDs) frameworks. Methods: Eighty stainless-steel dies were prepared to receive 3-unit FPDs frameworks with intermediate pontic (n = 40) and cantilever pontic (n = 40). Within each design, the specimens were randomly divided into four groups (n = 10 each) depending on the manufacturing technique: casting (CM), direct metal laser sintering (LS), soft metal milling (SM), and hard metal milling (HM). The frameworks were luted, and the vertical marginal discrepancy was assessed. Data analysis was made using Kruskal–Wallis and Mann–Whitney U tests (α = 0.05). Results: The vertical marginal discrepancy values of all FPDs were below 50 μm. The HM frameworks obtained the lowest misfit values in both designs. However, no differences were found among intermediate pontic groups or cantilevered groups. Likewise, when differences in a marginal discrepancy between both framework designs were analyzed, no differences were observed. Conclusions: The analyzed digital technologies demonstrated high precision of fit on Co–Cr frameworks and on both pontic designs.

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