Wire, bar or tube drawing dies. As-sintered pellets of hardmetal (carbide). Dimensions

1997 ◽  
Keyword(s):  

1967 ◽  
Vol 2 (2) ◽  
pp. 134-136
Author(s):  
B Kenny

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.



1963 ◽  
Vol 5 (5) ◽  
pp. 371-IN2 ◽  
Author(s):  
J.P. Duncan ◽  
B. Kenny ◽  
G.G. Moore


2012 ◽  
Vol 591-593 ◽  
pp. 850-853
Author(s):  
Huai Xing Wen ◽  
Yong Tao Yang

Drawing Dies meter A / D acquisition module will be collected from the mold hole contour data to draw a curve in Matlab. According to the mold pore structure characteristics of the curve, the initial cut-off point of each part of contour is determined and iteratived optimization to find the best cut-off point, use the least squares method for fitting piecewise linear and fitting optimization to find the function of the various parts of the curve function, finally calculate the pass parameters of drawing mode. Parameters obtained compare with the standard mold, both of errors are relatively small that prove the correctness of the algorithm. Also a complete algorithm flow of pass parameters is designed, it can fast and accurately measure the wire drawing die hole parameters.



1999 ◽  
Vol 87 (1-3) ◽  
pp. 258-265 ◽  
Author(s):  
S.B Park ◽  
Y Choi ◽  
B.M Kim ◽  
J.C Choi


Author(s):  
Reza Bihamta ◽  
Guillaume D’Amours ◽  
Quang-Hien Bui ◽  
Ahmed Rahem ◽  
Michel Guillot ◽  
...  

The variable thickness tube drawing is a new modification in the tube drawing methods which enables production of axially variable thickness tubes faster and easier in comparison with other similar methods like radial forging or indentation forging. The production of this type of tubes can be used in optimum design of mechanical parts which do not necessarily need constant thickness along the axis of tube and this method can strikingly reduce the overall weight of parts and mechanical assemblies like cars. In this paper, the variable thickness tube drawing were parameterized in a MATLAB code and optimized with the Ls-Opt software as an optimization engine and Ls-Dyna as a FE solver. The final objective of this optimization study is to determine the minimum thickness which can be produced in one step by this method with various tube dimensions (tube thickness and outer diameter). For verification of results, some experiments were performed in the tube drawing machine which was fabricated by this research group and acceptable correspondence was observed between numerical and experimental results.





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