SA Mechanical Engineer June 2014

S MECHANICAL A ENGINEER June 2014

Publication of the SA Institution of Mechanical Engineering, Incorporating News of Associate Organisations

ERNEST ELECTR

e

Supplied by:

rnest

lectro ngineering (Pty) Ltd.

ARMATURE & MOTOR REWINDING

370 Kruger Road, Strijdom Park, Randburg, South A Tel: (011) 792 9550 / 1 / 2 Fax: (011) 792 9553 E-mail:eeeaman@mweb.co.za Website: ernestee.co.

l Fashioning a clock in pure silver l l Eliminating the THE cost of physical prototypes l SOUTH AFRICAN MECHANICAL ENGINEER VOL 64 June 2014

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The brand that defined performance now redefines it.

]

]

Introducing the WARMAN® WBH® Centrifugal Slurry Pump Large capacity bearings for higher pressure loads.

New bearing frame design for truer alignment.

Grease or oil lubrication.

Optimised impeller and liner design for low turbulence operation and enhanced performance.

Not since the introduction of the WARMAN® AH® pump more than half a century ago, has there been anything quite as pioneering.

The new WARMAN® WBH® centrifugal slurry pump improves on the legendary performance and reliability of its predecessor with more than a dozen new high-performance features for improved efficiency and wear life. With the arrival of the WBH® pump, a new standard has been set - again.

For more information on the new WBH® pump, please contact a Weir Minerals representative or visit www.weirminerals.com/WBH Weir Minerals. Expertise where it counts.

Copyright ©2011, Weir Slurry Group, Inc. All rights reserved.

WARMAN, WBH, AH and WARMAN HI-SEAL are registered trademarks of Weir Minerals Australia Ltd.

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Single-point throatbush adjustment for rotational and axial movement while the pump is running.

Encapsulated rubber liners for high pressure operation.

WARMAN HI-SEAL® expeller for better sealing at higher inlet pressures.

Excellent Minerals Solutions

Chris Reay

Chairman of the Working Committee: Communications (SA Institution of Mechanical Engineering)

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WE’RE ON A ROLL!

WE NOW ROLL UP TO: 50mm X 3000mm in CARBON STEELS 25mm X 3000mm in Q & T STEELS 25mm X 3000mm in STAINLESS STEELS • Full CNC 4 roll system • We can roll much thicker over shorter lengths • We also cut (Laser, Plasma, Flame) up to 13000mm & 3000mm wide • We now bend up to 12 000mm x 2000 tonnes (the biggest in RSA) • We carry a comprehensive range of stock in ferrous and non-ferrous metals • Contact our sales team to discuss your individual requirements • Please visit our website for full details • Trade buyers are welcome

PEOPLE WORTH KNOWING

• We deliver

CONTACT US +27 11 062 3200 • www.generalprofiling.co.za • sales@generalprofiling.co.za 4

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S MECHANICAL A ENGINEER June 2014

Publication of the SA Institution of Mechanical Engineering, Incorporating News of Associate Organisations

Dirk Botha

ERNEST ELECTRO

e

Supplied by:

rnest

lectro ngineering (Pty) Ltd.

ARMATURE & MOTOR REWINDING

370 Kruger Road, Strijdom Park, Randburg, South Africa Tel: (011) 792 9550 / 1 / 2 Fax: (011) 792 9553 E-mail:eeeaman@mweb.co.za Website: ernestee.co.za

The monthly circulation is 3 947

l Fashioning a clock in pure silver l l Eliminating the cost of physical prototypes l

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FORTHCOMING TRAINING EVENTS – JULY 2014 Programmes and Registration Forms obtainable from Carey Evans, Tel: 031 764 7136 or Email: carey@saimeche.org.za Event Code

Event Name

Start Date

End Date

Region

H7414

Forestalling Problems through Root Cause and Failure Mode & Effects Analyses

22-Jul-14

23-Jul-14

Rivonia

A7814

Project Risk Management

23-Jul-14

24-Jul-14

Durban

C0614

The Engineer as Manager

26-Jun-14

27-Jun-14

Cape Town

ATM14

Business Speech Craft

24-Jul-14

24-Jul-14

Durban

C4114

Fundamental Management Tools

29-Jul-14

30-Jul-14

Cape Town

P01C4

Professional Competency Outcome 1 Complex Engineering Problems

- Define, Investigate and Analyse 31-Jul-14

31-Jul-14

Cape Town

E8914

Applying the Engineer Design Process in a Policy-Based Environment

31-Jul-14

East Rand

31-Jul-14

HAVASWW-D63104/E

WHEN WE SAY WE SHARE OUR SUCCESS, WE MEAN IT. PPS SHARES 100% OF ITS PROFITS WITH MEMBERS*. ALL R4.2 BILLION. Visit www.pps.co.za to view the increase in your PPS Profit-Share Account.

THE KEY TO SUCCESS LIES IN SHARING IT Consult a PPS product-accredited financial adviser or visit www.pps.co.za PPS is an authorised Financial Services Provider. * PPS members with qualifying products share all the profits of PPS.

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The pipe can take pressures up to 80bar, and was successfully tested at 100 bar.

It is a light, secure and practical way of installing borehole pump units. It is just as simple to remove the pump if necessary. In this position the stainless steel spring can be pushed into the groove to secure both pipes together.

Installation procedure

The Beckert Borehole Pipe is installed with the male adapter facing upwards and the female adapter downloads. In this position the male adapter pipe is clamped and the female pipe is fitted and lifted onto the male pipe.

The advantages include: • The water gets drained completely out of the pipe so there is no water in the connection • The water flows inside the pipe from the male to the female resulting in a secure connection • With this system the silting up of the connection (adapters) is prevented, even for long term installations • Minimal corrosion is possible • Minimal growth of bacteria

Borehole pipes

Flat suction system - draining flooded basements completely

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CAREERS

Prominent Professionals Dirk Botha, managing director AMD-Rotolok Academic School:

Wessel Maree High School, Odendaalsrus.

ment, not only of farming equipment, but also the production of food. Being involved in the manufacture of bulk handling equipment now makes it quite a realistic challenge in terms of grain handling systems which can be designed.

Graduate studies:

Projects

University of Pretoria. Mechanical engineering.

Most challenging

Career Path Dirk Botha

Growth path

After four years at Armscor in Pretoria I joined military vehicle manufacturer, OMC (Olifant Manufacturing Company) which later became Reunert OMC. Here I gained valuable experience in the manufacture of military vehicles including participating in the development of the Olifant tank.

I then joined Silverton Engineer for seven years as engineering manager. After that I did contract work for several companies including some work in the railway industry.

Then I joined Scania for seven years before moving to Schaeffler South Africa for four years before joining Birkenmayer as operational manager. After two years, I opted for my current position at AMD-Rotolok.

Achievements A project

I was fortunate to have a part at one stage of working on the development of the Olifant tank developed by OMC. I also took part in the development of the G6 Howitzer Artillery gun made by Armscor. However, one project which stands out is the chance I had to actively take part in the development of copper-brass radiator technology at Silverton Engineering.

At the time aluminium radiators became the norm, but we developed a copper-brass version to achieve a much more efficient heat exchanging function. This became the standard radiator for a leading German luxury automotive manufacturer’s cars made in the Eastern Cape.

In terms of heavy machinery we developed interesting rail machines at Lennings Rail which are used for maintenance of the overhead lines. These were unique vehicles designed and built from scratch.

Future – a concept, a dream or a wish

Having grown up on a farm, I have always had a soft spot for the agricultural industry where there are an abundance of opportunities to look at mechanisation of farming equipment. Currently South African farmers are mechanising at an incredible rate, creating interesting challenges for a mechanical engineer to get in on the act of contributing to the develop-

During my term at Birkenmayer we designed a machine which recirculates the wet waste gases coming off steel furnaces. The challenge on this project was on the electrical side of the mechanical system we designed. It was magnificent how it all came together in the end when I realised that the electrical system wasn’t as complicated as we anticipated. It left me in awe to experience how the electrical system actually pulled everything together to make the mechanical operation of our design function successfully.

Most rewarding

The cooling system we developed at Silverton Engineering.

We took the project over from another company, leaving the field wide open to explore the boundaries of copper-brass technology. To do this I went to Japan to purchase the required manufacturing machinery to make the radiators using this technology. Although copper-brass wasn’t new technology, we improved the manufacturing process to such an extent that the more efficient copper-brass radiators could be used in luxury cars for many years to follow.

Commentary Are there shortcomings in the Mechanical Engineering Industry in South Africa?

Engineers in general and mechanical engineers in particular, need more recognition for what they do. Mechanical engineering in South Africa specifically seems to have stagnated compared with other engineering disciplines. Elsewhere in the world, the work of mechanical engineers is distinguished, making it an attractive proposition for South African engineers to go overseas for more interesting challenges and a wide scope of opportunities.

If we really want to become an industrial country, the highlyqualified engineers who can really do the work, need to be recognised.

Message to young engineers

It is important for young engineers to consider management training. There is a dire need for managers in South Africa who have a strong technical background.

HAVASWW-D63104/E

WHEN WE SAY WE SHARE OUR SUCCESS, WE MEAN IT. PPS SHARES 100% OF ITS PROFITS WITH MEMBERS*. ALL R4.2 BILLION. Visit www.pps.co.za to view the increase in your PPS Profit-Share Account.

THE KEY TO SUCCESS LIES IN SHARING IT Consult a PPS product-accredited financial adviser or visit www.pps.co.za PPS is an authorised Financial Services Provider. * PPS members with qualifying products share all the profits of PPS.

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Chris Marx in his workshop

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E:\!BMG\#Jobs\Adverts\2014\052014\BMG-BEA05052014-ME.cdr 03 June 2014 07:27:40 AM Color profile: Disabled Composite Default screen

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MAN ITEMS Y BE OFF CAN ER FROM ED STOCK

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Sybrand Janeke of Bearing Motion

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FCB CAPE TOWN 10006430CT/E

The technologically-advanced grease range that saves you money in the long haul.

Whatever industry you’re in, you’ll find an Engen guaranteed-quality product to suit your greasing requirements.

For more information, don’t hesitate to contact your Engen representative, give us a call on +27 21 403 5090 or visit www.engenoil.com

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POWER

GENERATION

Marius Von Wieligh, director Matomo Energy

T O D A Y

Jeff Pipe, project manager at Matomo Energy

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Akhani and Energy Cybernetics joined forces to identify renewable energy and energy efficiency opportunities in Sub-Saharan Africa: (L-R) Deon Fuhri – Akhani Group COO, Fulu Mphuthi – Akhani Group CEO, Gustav Radloff – Energy Cybernetics MD, Ntaoleng Kunene – Akhani Group CIO, Frikkie Malan – Energy Cybernetics Operations

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Create technical illustrations that add another dimension of clarity and information to product documentation

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V13814

Grindex Pumps, Parts & Rental.

Dewatering, Sludge & Slurry Applications Grindex, a world leading manufacturer of electrical submersible drainage and sludge pumps, introduces a series of robust pumps for ̒Rescue Work̓. These pumps have been especially designed

by Grindex to withstand the tough mining and construction environments.

Your Benefits: Maximum pumping power in relation to weight • Ease of handling • High reliability • Available in stainless steel, aluminium and polyurethane •

Tel: +27 11 418 4000 info.vtza@voith.com www.rsa.voithturbo.com

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Simulation shows colour-coded resin velocities and flow paths inside the length of the extrusion die, with uneven flow for the original die (left) and more balanced velocity distribution for the optimised design (right)

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► EIA Process

► Environmental Risk Assessments

► Geographical Information Systems

► Agricultural Assessment and Advise

► Project Managment

► Wetland and Riparian Services

► Natural Resource Services

► Visual Impact Assessments

► Ecological/Biodiversity Services

► Public Participation Process

► Application Assistance

► Game Ranch Management

► Developement Research, Monitoring and Evaluation

N2 Mnini ECO Duties

Plant rescue

Durban Coal Terminal Site Inspection

Ohlanga Pump station ECO Duties

Freightpak Warehouse Site Audit

Public participation Makhabeleni

Ballito Interchange Botanical survey

Site assessment Sundumbili pipeline

l Tel: (031) 303-2835 l Fax: 086 692 2547 l l Email: info@afzelia.co.za l www.afzelia.co.za l

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Skills on Site

Septmeber 2012

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Wolfgang Demmler, vice president of KSB in SubSaharan Africa

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MARKET FORUM

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Weir Minerals Africa’s slurry product manager, Rui Gomes

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MARKET FORUM

•wt4820 verder sa mechanical engineer advert feb 2014.pdf

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2014/02/07

12:16 PM

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Don’t Miss the 2015 Buyers Guide Contact Colleen Cleary on Tel: (011) 781-1401, Cell: 084 680 9022 or Email: samecheng@promech.co.za for advertising opportunities THE SOUTH AFRICAN MECHANICAL ENGINEER

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MARKET FORUM

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Two More Packages

A selection of slurry pumps awaiting despatch

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MARKET FORUM

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MARKET FORUM

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A meeting of great engineering minds.

As a member of the Engineering Council of South Africa, you could qualify for exclusive offers*, a guaranteed 3-day service booking as well as Premium Drive, our 6 year/100 000km maintenance plan. To take advantage of this outstanding opportunity, inform your nearest dealer of your ECSA status. *Not in conjunction with other Mercedes-Benz Fleet Programmes/Offers. Excludes AMG and Limited Edition models.

Vehicle specifications may vary for the South African market.

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