SA Mechanical Engineer August 2017

DRONES AND UAVS TAKE OFF

DRUM VERSUS GEAR MOTORS

Your boutique business destination Surrounded by lush gardens in the hub of Johannesburg’s northern suburbs, The Peartree in Craighall Park caters for groups of two through to 100 guests in nine well-appointed and equipped business suites.

Breakfast meetings, working lunches, indoor or outdoor dining, half-day and full-day packages including all welcome refreshments, teas and lunches are offered in Standard, Gold and Platinum packages.

Secure parking, business centre, fibre optic broadband AV, lockable space, all underpinned by highly qualified and helpful staff dedicated to ensuring your event is a success, make The Peartree a destination of choice.

www.thepeartree.co.za e-mail: info@thepeartree.co.za Tel: 011 781 1401 41 St. Albans Ave, Craighall Park

Vaughan Rimbault, CEO, SaiMechE

On a minimum 36-month contract and at a salary equivalent to that of a junior officer in the defence force

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Produced by: PROMECH PUBLISHING, P O Box 373, Pinegowrie, Official Publication of THE SA INSTITUTION OF MECHANICAL ENGINEERING 2123, Republic of South Africa and endorsed by: Tel: (011) 781-1401, Fax: (011) 781-1403 Email: samecheng@promech.co.za, www.promech.co.za Managing Editor Susan Custers Editorial Contributors

Liesl Venter/Patricia Holburn Advertising Sales: Louise Cresswell Cell: 071 886 1263 DTP Anne Rotteglia Circulation Belinda Siegruhn

Subscriptions Please email us at accounts@promech.co.za if you wish to subscribe to “SA Mechanical Engineer” at R550,00 (excl postage and VAT) per year; R1 380,00 per year for Africa/Overseas.

Disclaimer

PROMECH Publishing and The South African Institution of Mechanical Engineering as well as any other body do not take responsibility for the opinions expressed by individuals.

Printed by: Typo Colour Printing, Tel: (011) 402-3468/9 FSC (Forestry Stewardship Accreditation)

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CONSULTING ENGINEERS OF SA CORROSION INSTITUTE OF SA INSTITUTE FOR CERTIFICATED MECHANICAL AND ELECTRICAL ENGINEERS NATIONAL SOCIETY OF BLACK ENGINEERS NUCLEAR INSTITUTE SA ASSOCIATION FOR ENERGY EFFICIENCY SA CAPITAL EQUIPMENT EXPORT COUNCIL SA INSTITUTE FOR NON-DESTRUCTIVE TESTING SA INSTITUTE OF TRIBOLOGY SA PLASTIC PIPE MANUFACTURERS ASSOCIATION SA PUMP MANUFACTURERS ASSOCIATION SA VALVE AND ACTUATORS MANUFACTURERS ASSOCIATION VALVE & ACTUATOR MANUFACTURERS CLUSTER OF SA

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Council 2016 - 2018 Office Bearers President............................................ Prof JL van Niekerk (Wikus) Vice President........................................................ A Roos (Andre) National Treasurer...................................................G van den Berg

Branch Chairpersons Central ................................................................. C Kruger (Carel) Eastern Cape........................................... G van den Berg (Gideon) KwaZulu Natal .. Dr J Padayachee (Jared)Mpumalanga Highveld .

N Lecordier (Noel) Vaal......................................................... Prof LM Masu (Leonard) Western Cape ..................................................S Pietrangeli (Sven)

Portfolios: Education (Universities of Technology).............E Zawilska (Ewa) Communications and Marketing..................G Bartholomew (Bart) Technology Programme..................................... SZ Hrabar (Steve)

Chief Executive Officer: Vaughan Rimbault National Offic e Manager: Anisa Nanabhay PO Box 511, Bruma, 2026 Tel: (011) 615-5660 Email: info@saimeche.org.za Website: www.saimeche.org.za Membership Email: membership@saimeche.org.za

Company Affiliates Autodesk as represented by Worldsview Technologies

Osborn Engineered Products SA (Pty) Ltd

Ainsworth Engineering (Pty) Ltd

PaCMan Projects & Maintenance

Alstom Power Service SA (Pty) Ltd

Plant Design & Project Services (Pty) Limited (PDPS)

Babcock Ntuthuko Engineering (Pty) Ltd

Rotek Engineering

DCD Group (Pty) Ltd

S.A.M.E Water (Pty) Ltd

Exxaro Resources (Pty) Ltd

SA Power Services (Pty) Ltd

Festo (Pty) Ltd

Sasol Technology (Pty) Ltd

Fluor SA (Pty) Ltd

SEW Eurodrive

Green Plan Consultants (Pty) Ltd

Siemens Ltd

Hatch Africa (Pty) Ltd Howden Power (a div of Howden Africa) Howden Projects (a div of James Howden) Kelvion Thermal Solutions (Pty) Ltd MBE Minerals (SA) (Pty) Ltd Megchem Mod-U-Flow CC

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PPS Insurance Co Limited

Bosch Projects (Pty) Ltd

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Simera Technology (Pty) Ltd Spirax Sarco (Pty) Ltd Tenova Mining and Minerals SA ThyssenKrupp Industrial Solutions SA (Pty) Ltd Ultra-Flow Engineering Services CC Vital Engineering (Pty) Ltd Weir Minerals Africa

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COVER STORY

Creating economies-of-scale to offer cost effective, quality offerings to customers

SMC now offers electro/pneumatic panel design and building for various industries and applications, and has seen great recent success with a large automotive company

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SMC’s production and warehouse spans 3 500m 2

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Invincible Valves (Pty) Ltd was established in 1982 and since has grown to a medium sized enterprise located in Knights, Germiston Invincible Valves prides itself on service excellent and flexibility by striving to enhance our customer’s bottom line.

Our 6,500m² facility in Knights is made up of 4,500m² under roof being our stores and workshop. The facility is fully equipped to offer a one-stop resource for valves and ancillary equipment which we transport globally.

As an approved BBBEE Level 4 supplier to all major industries within South Africa, we maintain expertise and experience across a broad spectrum of industries and applications with a wide range of products. We offer a comprehensive range of local and imported valves and accessories for the mining, petro-chemical, power generation, water, sewerage and general industries. We have agents in all major centres around the country and service all four corners of the globe.

We offer an in-house rubber lining service for valves, pipes, fittings and vessels which is utilized by many of the country’s major valve manufacturers. In addition we offer complete service, repair and valve reconditioning services for all types of valves.

Our Core Values: We believe in treating our customers with respect. We grow through creativity, invention and innovation. We integrate honesty, integrity and business ethics into all aspects of our business functioning.

Our Mission Statement: Build long term relationships with our customers and clients, to provide exceptional customer services by pursuing business through innovation and advanced technology.

Our Purpose: To be a leader in the Valve Industry by providing enhanced services, customer service and profitability.

Our Vision: To provide a quality service that exceeds the expectations of our esteemed customers.

Invincible Valves is a proud supplier of quality valve products and ancillary equipment backed by service excellence around the globe. It is the combination of these values that allows us to form lasting business relationships.

Invincible Valves (Pty) Ltd

If it's not INVAL®, it's not Invincible 33 Shaft Road, Knights, Germiston TEL: +27 (0) 11 822 1777 | FAX: +27 (0) 11 822 3666 EMAIL: enquiries@invalve.co.za | WEB: www.invalve.co.za

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RELIABLE ENERGY SOLUTION

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for the entire industry.

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Overhead Lines Distribution Transformers Motor Control Centres All Weather Outdoor Control Panels Diesel Generator Push Buttons and Pilot Lights Motor Protective LV Switchgear Direct Online Starters (DOL) LV Motors and Drives Invicta Vibrator Motors Mini Substations MV Motors MV Generators Automation Control Room MV Switchgear Tiger Ring Main Unit Power Transformers

The Zest WEG Group has been servicing the mining, infrastructure, construction and manufacturing sectors for more than 35 years and by leveraging best practice engineering and manufacturing capabilities, the group is able to offer a range of standard off-the-shelf products as well as end-to-end energy solutions.

An in-depth understanding of the operational conditions found across all these sectors and years of experience have ensured that the Zest WEG Group service offering is fit-for purpose.

ZestWeg_840_General_SAMechEng_176x130.indd 1

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Tel: +27 11 723 6000

August 2017

www.zestweg.com

2017/05/12 12:05 PM

Expertise

Quality

Reliability

KSB

HG - The intelligent pump series For any plant or system to be truly efficient, its individual components must be designed for efficiency too. Boiler feed pumps in power stations consume typically 3 - 5% of their unit's power output. Consequently, any improvement in their efficiency and energy balance will directly enhance the economic efficiency of the entire plant.

• • •

Pumping boiler feedwater and condensate in industrial facilities Pumping cold water in snowmakers High-pressure pumping in descaling installations

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High-pressure water generation for industrial processes

HGC Pump in Boiler Water application

www.ksbpumps.com Tel: +27-11-876-5600

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USEFUL INDICATORS

Rudi Kruger, General Manager at LexisNexis Risk Management

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USEFUL INDICATORS

APE pumps - Pumps at the heart of africa Mining

Waste Water processing

Manufacturers of: Vertical industrial turbine pumps Multi-stage high pressure pumps Split casing pumps End suction pumps

Power Generation

Vertical sump pumps

Petrochemicals

API 610 pumps

26 Nagington Road, Wadeville Germiston 1400, South Africa Tel +27 11 824 4810 | Fax +27 11 824 2770 PO Box 14733, Wadeville 1422, South Africa Email: apepumps@mweb.co.za Website: www.apepumps.co.za

APE A5 ad.indd 1

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PIPES, PUMPS + VALVES

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Tough demands have met their match.

With a Hägglunds hydraulic drive system you get compact, durable power - without foundations or gearbox. A full range of rugged motors and complete solutions for monitoring and control give you total assurance, even in the most demanding applications.

Let us know your demands.

Hägglunds Drives South Africa (Pty) Ltd, Johannesburg, Tel. + 27 (0)11 454 4933 E-mail: info@za.hagglunds.com www.hagglunds.com

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POWER TRANSMISSION

Figure 1: Gear motor overview: A: fan; B: motor; C: terminal box; D: gear box; E: torque joint; F: shaft; G: bearing

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Figure 11: Draining the lubricant from the drum motor

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POWER TRANSMISSION

Figure 2: Trials at 40 rpm. Current rms on the left axis [A] and active power on the right axis [kW]. X axis: additional braking torque [Nm]

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Figure 3: Trials at 27 rpm. Current rms on the left axis [A] and active power on the right axis [kW]. X-axis: additional braking torque [Nm]

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Figure 4: Estimated winding temperature [°C] after ten minutes working time at low and high speeds

Figure 5: Sound power [dBA] at 40 rpm and 27 rpm

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POWER TRANSMISSION

Figure 6: Gear motor selected for the food area use case

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Hygienic dynamic seal of the drum motor

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The motor is sealed to the gearbox with a plane compressed gasket

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POWER TRANSMISSION

Figure 7: Trials at 82 rpm. Current rms on the left axis [A] and Active Power on the right axis [kW]. X axis: additional braking torque [Nm]

Figure 9: Estimated winding temperature [°C] after ten minutes of working time at low and high speed

Figure 8: Trials at 41 rpm. Current rms on the left axis [A] and active power on the right axis [kW]. X axis: additional braking torque [Nm]

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Figure 10: Sound power [dBA] at 82 rpm and 41 rpm

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Figure 11: Protective layer damaged by incidental impact

Figure 12: Strengths and weaknesses of various installations

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POWER TRANSMISSION

Figure 13: Results overview table for all evaluation criteria and use cases

Figure 14: Results for relevant hygiene sub-criteria for use case 1 (Non-food area)

Figure 15: Results for relevant hygiene sub-criteria for use case 2 (Food area)

Figure 16: Results for relevant hygiene sub-criteria for use case 3 (Washdown area)

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“Motor seal” between the gearbox and the motor

fIGURE 17: Internal side of the radial shaft seal of the drum motor. The white ring behind it is the hygienic seal at the product side.

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Indivisual Wear

+ Indivisual Corrosion

+ Combined Wear & Corrosion

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Triboccorosion

MARKET FORUM

REA003_2_Half Page advert August 2017 FINAL.pdf

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MARKET FORUM

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MARKET FORUM

Why should you pay more for quality?

Improved performance with upgraded SKF Explorer spherical roller bearings • • •

Upgraded and optimized as part of the SKF EnCompass Field Performance Programme Improvements in steel composition, heat treatment, geometries, surface finishes, lubrication and seals Extended bearing life in the most demanding industrial applications - can last up to twice as long as previous bearings under contaminated or poor lubrication conditions.

Find out more at www.skf.co.za SKF South Africa (Pty) Limited Tel: +27 11 821 3500, Fax: +27 11 821 3501 Email: sales.za@skf.com, Web: www.skf.co.za ® SKF is a registered trademark of the SKF Group. | © SKF Group 2016

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Michael Labacher

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MARKET FORUM

Harriet Green, GM Watson IOT, customer engagement and education, IBM with Guido Jouret, chief digital officer, ABB

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MARKET FORUM

On the Move

Widor Grobbelaar

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16 - 20 OCtOber 2017

Durban ICC / Inkosi Albert Luthuli International Convention Centre A FULL WeeK OF ACtIVItIeS DeDICAteD tO GrOWING KWAZULU-NAtAL'SeXPOrt bUSINeSSeS AND INDUStrIeS

MASTERCLASS AND TRAINING

NETWORKING AND RECEPTIONS

CONFERENCES AND WORKSHOPS

Make sure you join us at the 2017 KZN Export Week - the annual programme of Trade Invest KZN developed to recognise, promote and assist with growing KwaZulu-Natal’s export businesses and industries!

AWARDS

BUSINESS SHOWCASE / EXPO

WHAt tO eXPeCt? 600+ AtteNDeeS: Network and build new relationships with fellow attendees from across the continent.

GOLF DAY CHALLENGE tIKZ Nw offe ill be ri plac ng 100 F es to ree em expo rters erging ! out if yo To find u qu al c o n danie tact ify l.claa se n@e

xport

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30 tOP SPeAKerS: •

Meet trade partners and associations who can help you to reach new markets

•

Network and build new relationships with fellow attendees from across the continent

•

Hear some of the top business minds share their tips and stories on how to build a global business

Hear some of the top business minds share their tips and stories on how to build a global business.

20 LeADING SerVICe PrOVIDerS: Learn about the latest technologies and services on offer from leading service providers participating in the expo showcase.

10 COUNtrIeS: Meet with global trade partners and associations who can help you to reach new markets.

Limited seats available! Contact us today! +27 87 890 0898 Richard Desha: richard.desha@exportweek.co.za Phyllis Wasarirevu: phyllis.wasarirevu@exportweek.co.za

Presented by:

Supported by:

Media partners:

Co-located with:

rail www.exportweek.co.za

SMC Pneumatics (South Africa) Pty Ltd

Pneumatic Panels Now Manufactured by SMC Made to order, in-house for fast turnarounds.

DID YOU KNOW: SMC Pneumatics now offers the design and completion of pneumatic panels made to your specifications!

Discuss your requirements with your sales engineer and have our team of technical experts, designers and panel builders custom design and manufacture panels for you using our world-class components!

Contact us for a free consultation or a tour of our state-of-the-art facilities on +27 11 100 5866 or email us at marketing@smcpnematics.co.za

Visit us at ProPak Cape 2017 - Stand D1 24 – 26 October 2017, CTICC #SMCRaisesTheBar Worldwide leading experts in pneumatics and industrial automation

Join the conversation

SMC Pneumatics (South Africa)

SMC Pneumatics – South Africa

www.smcpneumatics.co.za