ISSN:
1573-8973
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Conclusions 1. It was found that it is possible to quench extruded semifinished products of alloy VAD23 at the press, utilizing the heat of the billet and the heat resulting from plastic deformation. To obtain high ductility of thin-walled sections it is necessary that aging be conducted at 160°C for 4 h (rods at 160°C for 4–6 h), while for high strength they should be aged at 160°C for 12 h. 2. Sections and rods quenched at the press, unlike those quenched after repeated heating, have an even, fine-grained structure throughout the section. 3. The optimal extrusion conditions are as follows: preheating of the billet to 490–510°C, the container to 450–480°C, extrusion rate 1.5–2.0 m/min.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00653402
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