haroonkhan – Page 303

Computer Systems

Dec 13, 2022

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by

in Manufacturing Systems: NC, CNC, AND DNC

A computer system is required to control the functions of the machines and to participate in the overall coordination and management of the manufacturing system. The objectives of a computer system are to give instructions to workers, transform part programs to machine language, control material handling system, schedule production, monitor safety measures, control the quality…

Material Handling System

Dec 13, 2022

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by

haroonkhan

in Manufacturing Systems: NC, CNC, AND DNC

The main objectives of a material handling system is to load, position, unload the job at each workstation, transport the job between stations in multi-station manufacturing systems, and store the finished jobs into the storage.

Production Machines, Tools, Fixtures, and Other Related Hardware

Dec 13, 2022

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by

haroonkhan

in Manufacturing Systems: NC, CNC, AND DNC, Mechanical Working Of Metals, Sheet Metal Work, And Powder Metallurgy

In manufacturing systems, the term workstation refers to a location in the factory where some well-defined operation is accomplished by man and/or machines. The machines used in manufacturing or assembly can be classified as follows: Manually Operated Machines: In manually operated machines, the machines only provide the power for operations but the control of operations is…

INTRODUCTION

Dec 13, 2022

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by

haroonkhan

in Manufacturing Systems: NC, CNC, AND DNC

A manufacturing system consists of all the resources required to transform the material from its raw form to finished form. The resources involved in this transformation process may be man, materials, money, machine, management, energy, etc. A manufacturing system’s components may be broadly categorized as follows:

APPLICATIONS OF POWDER METALLURGY

Dec 13, 2022

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by

haroonkhan

in Mechanical Working Of Metals, Sheet Metal Work, And Powder Metallurgy

Powder metallurgy techniques are applied in manufacturing of a different kind of products. Some of them are mentioned as follows:

LIMITATIONS OF POWDER METALLURGY

Dec 13, 2022

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by

haroonkhan

in Mechanical Working Of Metals, Sheet Metal Work, And Powder Metallurgy

ADVANTAGES OF POWDER METALLURGY

Dec 13, 2022

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by

haroonkhan

in Mechanical Working Of Metals, Sheet Metal Work, And Powder Metallurgy

FINISHING OPERATIONS

Dec 13, 2022

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by

haroonkhan

in Mechanical Working Of Metals, Sheet Metal Work, And Powder Metallurgy

These are secondary operations intended to provide dimensional tolerances and better surface finish. They are sizing, coining, machining, impregnation, infiltration, heat treatment, and plating. Sizing: It is repressing the sintered component in the die to achieve the required size with accuracy. Coining: It is repressing the sintered components in the die to increase density and to give…

SINTERING

Dec 13, 2022

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by

haroonkhan

in Mechanical Working Of Metals, Sheet Metal Work, And Powder Metallurgy

Sintering involves heating of the green compact at high temperatures in a controlled atmosphere to protect from oxidation of metal powders. Sintering increases the bond strength between the particles. Sintering temperature is usually 0.6–0.8 times the melting point of the powder. In case of mixed powders of different melting temperatures, the sintering temperature will usually…

COMPACTING

Dec 13, 2022

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by

haroonkhan

in Mechanical Working Of Metals, Sheet Metal Work, And Powder Metallurgy

The main purpose of compacting is converting loose powder into a green compact of accurate shape and size. The techniques adopted for compacting are pressing, centrifugal compacting, extrusion, gravity sintering, and rolling. Pressing: The metal powders are placed in a die cavity and compressed to form a component shaped to the contour of the die (Figure…

Author: haroonkhan