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POWDER METALLURGY

Mateusz Soja

Piotr Pabiańczyk

IM sem.3

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16.11.2021

2

Introduction

Powder metallurgy is a process for 
forming metal parts by heating 
compacted metal powders to just 
below their melting points. 
Powder metallurgy is the study of the 
processing of metal powders, including 
the fabrication and conversion of metal 
powders into useful engineering 
components.

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Basic P/M Steps

• Raw Material/atomization,
• Mixing,
• Forming/Compaction,
• Sintering,
• Optional Operations,
• Finished Products.

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Powder Compaction and 

Sintering

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POWDERS

One method of metal-powder 
production by melt atomization
Atomization is 
accomplished by 
forcing a molten 
metal stream 
through an orifice 
at moderate 
pressures.

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MIXING

Elemental, partially alloyed or pre-alloyed 
metal powders are first blended with 
lubricants to produce a homogeneous mixture. 
Cycyle of mixing:
1. Reduction of oxides,
2. Annealing,
3. Powder Weighings,
4. Adding lubricants,
5. Mixing.

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FOMRMING/COMPACTION

Methods of compaction are:
• Pressing,
• Rolling,
• Extrusion,
• Injection molding.

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Pressing

Compaction Cycle:
1. Cycle Start
2. Charge die with 

powder

3. Compaction 

begins

4. Compaction 

complete

5. Ejection of 

compact

6. Recharging of die

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MECHANICAL PRESS

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SINTERING

The parts are heated below the 
melting point of the base metal, held 
at the sintering  temperature, then 
cooled.

Typical sintering temperatures for 

based metals range from 1100 - 1150 

celsius degrees 

Standard cycle times range from 2-3 

hours.

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SINTERING FURNACE

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Optional Operations

• Heat treatment,
• Impregnation of sintered,
• Machining,
• thermo-chemical treatment,
• Surface treatment of sintered.

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Examples of typical parts made by 
powder metallurgy processes.

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Thx for your attention


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