Control of grinding plants by predictive multivariable neural control

Literature Powder production Fundamentals Aluminium

~36 ~36

Berylium Copper

~36 ~36 P37

Iron and steel Molybdenum Ceramic materials

P37 P37 P37

Coatings Composite

P37 materials

Electrical and magnetic Hard materials and tool steels

P37 P37

materials

Mechanical alloys Metal injection mo ulding

P37 P37 ~38

PM components

~38

Literature. Simulation of charge motion in tumbling ball mills by discrete element methods

Effect of particle size on compaction of rapidly solidified aluminium powder

R.Venugopal, R.K.Rajamani. (University of Utah, Salt Lake City, USA.) Powder Technology, Vof 115, No 2, 2001, 157-166.

J.Japan

Investigation is discussed

of charge

with regard

mentation

els. Use of discrete

element

results

images of ball/charge experimental

It is reported had

been

that

mechanisms

for

Fe powder, made from mill scale or Fe ore, are described. Comparison is made between variFe powder.

system

is derived

related

A model control

consumption

plant.

of error

is used to simu-

strategy. data

The model

obtained

Mass balance

are considered

of particle

system

from

for mills with

a

sizes. Tests are used to train

network

system on-line.

(Pennsyluama state University, USA.) Powder Technolog-j, Vol 115, No 2, 2001, 131-138. R.D.Cnmeim.

of organic

binder

content

and plas-

ticity on stress/strain response of granulated Al203-(2.45 to 7.8)wt% polyvinyl alcohol was investigated content

a specified binder

at -320C

increased

to 350C.

As binder

the stress required

density

glass transition

increased.

to attain

Below

temperature

binder

cussed

with

reported

regard

to reduction

the

had been developed

was

tering

temperature

temperature

sonic pulse in the sample

needed to attain specified expanded after ejection.

36

MPR January

stresses

density.

were

Compacts

during

is feasible.

that

of an ultrasintering.

results show that real time in situ monitoring sintering

2002

of sm-

transducer

and velocity

mechanical which

rate. Calculated

contraction

is correlated

is

vol-

with

mea-

density.

effects

ing/sintering,

of AlN

were

composites

of nitride

content

on cavitation

investigated.

The

had the greater

This

between

is attributed

direct

resistance to stronger

AlN and the Al matrix.

Impact-attrited berylium powder and material properties J.Zhong et al. Rare Metal Mater.Eng., Vol 28, No 6, 1999, 386-389. In Chinese. Be powder, compared

Use is made of a high

electromagnetic amplitude

It is

technique

for charactenzation

and used for Al.

measures

compaction

of costs.

that an in situ non-contact

to

on structure,

Berylium

J.C.Foley, D.K.Rehbein. (Ames Laboratory, Ames, L’SA.)I.Met& (JOM), Vol52, No 5, 2000, 38-29, 42. Non-destructive testing of PM parts is dis-

easily deformed and high green density could be achieved. With increase in glass transition higher

of

occurs

for particle

resistance of Al-AlN composites, made from blended Al,AlN powders or by direct nitrid-

bonding

Characterisation of sintering aluminium using in situ non-destructive evaluation

which

required

is related

that depend

to cavitation.

Aluminium

Response of granular powders to uniaxial loading and unloading

than

in rela-

and specif-

K.Kondoh. R.W’atanabe. (Tohoku Unwersrry, Se&i, Japan.) J.Japan Sot. Powder/Powder Met&, Vol47, No 8, 2000, 860-865. In Japanese.

nitrided

Fundamentals

deformation,

Cavitation toughness aluminium-aluminium composites

The

and power

friction

to solidification

umetric

of grinding

prediction

from empirical

the neural

Effects

Plastic

to partiequation.

is discussed

density,

pressures

properties

network

for control allows

steps ahead.

real grinding range

a neural

developed

The

late the proposed

G.L.Messing,

ic surface.

Al pow-

reference

Cooper-Eaton

rearrangement

to apparent

at high

mills.

M.Duarte er al. (Unie’erslty of Chile, Santiago, Chde.) Powder Technology, Vol 115,No 2, 2001, 193-206.

several

ous grades of reduced

and power drift in

tion

sured green

plant.

production

still

solidified

with

the

rearrangement,

Production of reduced iron powder from mill scale and iron ore

and

size using

Particle

is reportagainst

Control of grinding plants by predictive multivariable neural control

Powder production

Processing

cle

success of mod-

methods

of rapidly

der was investigated

in instru-

are verified motion

Compaction

in ball mills

to difficulty

of mills and limited

ed. Simulation

For copies of full papers you are recommended to contact individual authors, use the Interlibrary Loan system or, for conference papers, to contact the conference organizers.

motion

R.Watunabe et al. (Tohoku Uniwrrity, Sendai, Japan.) Sot. Powder/Powder Metal., Vol 47, No 8, 2000, 853-859. In Japanese.

The of

tion.

content.

by impact

Be powder

The advantages

are shown distribution, pacts

produced

with

attrition,

is

made by disc attri-

of the impacted

powder

to be narrow range of particle size near spherical shape and low 0 The

made

mechanical

from

impacted

to be improved in comparison from disc processed powder.

properties powder

of comare shown

with those made

0026.0657/01/$ - see front matter 0 2001 Elsevier Science Ltd. All rights reserved.