Aluminum extrusion technology - download pdf or read online

By Pradip Saha

ISBN-10: 087170644X

ISBN-13: 9780871706447

Offers a complete creation to the explosion of data that has develop into to be had within the box of aluminum extrusion know-how over the last fifteen or two decades. DLC: Aluminum--Extrusion.

Show description

Read or Download Aluminum extrusion technology PDF

Best metallurgy books

New PDF release: Solder Joint Reliability Prediction for Multiple

Solder Joint Reliability Prediction for a number of Environments will offer engineers, graduate scholars and educational researchers, and reliability specialists with insights and necessary instruments for comparing solder joint reliability of ceramic sector array digital applications lower than a number of environments.

Heat Treater's Guide: Practices and Procedures for Irons and by Harry Chandler PDF

This version is a whole revision and includes a good deal of recent subject material together with details on ferrous powder metallurgy, forged irons, extremely excessive power steels, furnace atmospheres, quenching methods, SPC and computing device expertise. info on over a hundred thirty five extra irons and steels were further to the previously-covered 280 alloys.

Read e-book online Heat treating : including steel heat treating in the new PDF

Papers from a November 1999 assembly research warmth treating and linked industries, relating features of keep watch over of microstructure via warmth remedy, apparatus and approaches, forge heating with induction, quenching and distortion, and metal warmth treating within the new millennium. topics inclu

Extra resources for Aluminum extrusion technology

Sample text

The average values of the flow stress and thermal properties are assumed. The expressions to calculate strain, strain rate, and the flow stress of the billet material were shown by Saha (Ref 14). Figure 3 shows the gridded meridian plane of the billet for numerical computation of the temperature distribution during extrusion. Finite Difference Approximation. The expressions can be written in the finite difference form as per the scheme shown in Fig. 4(a) and (b) for equal and unequal spacing as: ∂ T = Tm, j +1 + Tm, j −1 − 2Tm, j ∂r 2 (Δr )2 2 (Eq 2) 34 / Aluminum Extrusion Technology 2 ∂ T = Tm+1, j + Tm−1, j − 2Tm, j ∂z 2 (ΔZ )2 (Eq 3) 2 ∂ T = 2Tm+1, j + 2φTm−1, j − 2(1 + φ )Tm, j ∂z 2 (ΔZ )2 (φ +φ2) (Eq 4) ∂T = Tm, j +1 − Tm, j −1 2Δr ∂r (Eq 5) ∂T = Tm+1, j − Tm−1, j 2ΔZ ∂Z (Eq 6) ∂T = Tm+1, j − φ Tm−1, j − (1 − φ )Tm, j ∂Z ΔZ (φ + φ2) 2 2 (Eq 7) where φ = ΔZ′/ΔZ.

Altan et al. (Ref 17) have performed a slab method analysis to determine the extrusion pressure. The following considerations were used in making the analysis: • • • • Extrusion using a cylindrical billet through a flat die Extrusion shape equivalent to a rod of diameter DE Frictional shear stress at the dead-metal/flowing metal interface Frictional shear stress at the billet-container interface Consider the static equilibrium of the forces acting on the shaded element within the dead-metal zone area as shown in Fig.

A) Freebody diagram of element inside the container wall. (b) Freebody diagram of element under the dead-metal zone. (c) Geometric relationship among dz, dD, and ds Fundamentals of Extrusion / 21 Substituting the boundary conditions at D = DE, pz = 0, C will be determined by: C= 1 (Eq 29) 2 DE where DE, the equivalent diameter of extruded rod, could be calculated by using Eq 8. Substituting the value of constant, C, in Eq 28 and simplifying, the average extrusion pressure is given by: – (1 + cot α ) ln DC pave, z=0 = 2σ DE 3 (Eq 30) where DC is the equivalent diameter of the billet (container bore diameter) filled in the container after upsetting.

Download PDF sample

Aluminum extrusion technology by Pradip Saha

by Daniel

Rated 4.66 of 5 – based on 19 votes