Fracturing and Deformation Characteristics of Aluminium Preform during Cold Forging at Low Strain Rates
The industrial processing of sintered powder preform has been developed for manufacturing various engineering components. The present investigation has been undertaken to analyze the deformation characteristics during the cold forging of sintered aluminium preform at low strain rates. Experiments have been conducted and measurements made on deformation during cold forging on aluminium preforms with lubricated end conditions. Experimentally obtained flow load and plastic work done are in good agreement with theoretical estimates.
Sustaining behavior of sintered forged aluminum powder specimens made by unconventional die
Abstract The forging of sintered metal-powder preforms is new manufacturing method in many parts of the world. The sintered forging is an economic method of manufacturing of parts from metal powder. In this paper authors used a modified die with several layers of different materials and heat treated accordingly instead of using tool steel to make an effective die with reduced cost. Quenching is also performing of selected parts to harden the die material. The samples of aluminum powder are made and examined for different parameters along with microstructure and it was observed that pores in the material will eliminate after sintering process.
Compatibility of sintered materials during cold forging
The present paper reports on the compatibility characteristics of sintered materials under axisymmetric and plane strain cold sinter–forging conditions. Experiments were conducted using different sintered preforms in the form of discs and rectangular strips, and measurements were made for strain variations at the free surface. The theoretical and experimental results obtained are analysed and discussed critically to explain the compatibility characteristics of sintered materials during cold forging, and there results presented graphically.