S MECHANICAL A ENGINEER Oct 2015
Publication of the South African Institution of Mechanical Engineering, incorporating News of Associate Organisations
Electromechanical Solutions That Deliver FIRST INTELLIGENT UNDERGROUND DESIGN IN THE WORLD PROTECTING THE ID AND THE AD OF THE BEARINGS
Chris Reay
Chairman of the Working Committee: Communications (SA Institution of Mechanical Engineering)
It is not a trivial indication that the voters are fed up with political inaction and ineptitude
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SAMHYDRAULIK, which is one of the leaders in the field of hydraulic transmission, has been operating for over 25 years in the international market, offering a complete range of orbital hydraulic motors and power steering units, axial pumps and motors for medium and high pressure ranges, all characterised by excellent performances. SAMHYDRAULIK employs 120 people who operate inside a very modern and efficient plant that spans over 6 000 square metres to assure a high standard and flexible production capacity. The latest computer technology is used for both design and production, combined with strict quality control procedures during all production phases, which translates into innovative, reliable and functional products that meet the various needs of the market. Its ISO 9001 certification, held since 1994, is the result of a qualityorientated philosophy on which SAMHYDRAULIK has always based its operation.
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AXIOM HYDRAULICS (PTY) LTD Tel: (011) 334-3068 / 334-3086 Fax: (011) 334-4543 E-mail: axiomjhb@mweb.co.za 17 Heidelberg Road, Village Main, Johannesburg, 2000 P O Box 260248, Excom, South Africa, 2023
THE SOUTH AFRICAN MECHANICAL ENGINEER VOL VOL May 20122015 THE SOUTH AFRICAN MECHANICAL ENGINEER 6562 October
The monthly circulation is 3 947
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Forthcoming Workshops : November 2015 Programmes and Registration Forms obtainable from Carey Evans, Tel. 031 764 7136 or Email: carey@saimeche.org.za Pumps Gauteng
Durban
Cape Town
14-15 Mar 2016
12-13 Sep 2016
16-17 May 2016
Event Code
Event Title
Start Date
End Date
Region
Booking Closure Date
A6515
Fans and Air Handling
25 Nov 2015
26 Nov 2015
Durban
13 Nov 2015
Adhesive Science
Gauteng Durban Engineer Placements 29 April 2016
23 March 2016
Gauteng
Durban
Cape Town
10 May 2016
15 June 2016
3 May 2016
Professional opportunities Our job board continues to display a wide variety Heat Exchangers of excellent job positions that you can review and Gauteng Durban Cape Town apply for on- line. Keep your credentials on our 2016 March 2016 6 April secure 22 andJune confi dential 23 database, update them at 2016 any time. We keep in touch you.& Related Protection Methods in Flame with Proofing Explosive Environments www.engineerplacements.com
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Engineer Placements
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Are you looking for engineering resources? Consider the following: • A specialist service • Operated by Professional Engineers • That speak engineering language • Has a large, live local skills database • A network with access to scarce skills • Advanced searching for future needs Contact us for a win-win deal admin@engineerplacements.com VOL 65
October 2015
Dr Steve Lennon
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Academic
Career Path Eduard Venter
Achievements
Commentary
Projects
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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 October 2015
Septmeber 2012
1
Dr Jacomine Grobler
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Fig. 1: TRI-CON valve with Steam jacket:
Fig. 2: Standard bearing design in the industry with graphite protection ring
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Less drive sometimes gets better results
Mohlaleng_2580_E
Fig. 4: Design of the patented Sealed Bearing
Slowing down a pump or fan from 100 to 80% can reduce your motor’s energy use by up to 50%. A VSD, also known as a Variable Speed Drive, is a device that can adjust electricity supply. By controlling the speed of your motors, and matching them closely with the requirements of the system, a VSD can typically cut energy consumption from 20 to 50%. Talk to one of our Energy Advisors today and let us assist you in devising the most effective energy plan for your industrial business.
Call our Eskom Contact Centre and request a call from an Energy Advisor on 08600 37566. For more information go to www.eskom.co.za/idm
Eskom Holdings SOC Ltd Reg No 2002/015527/30
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Caroline Houghton, CEO of Rapid Allweiler
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Our competitors are saying the same thing too. Yes, the economy is impacting on the situation but manufacturing in South Africa is also not being supported. Many more companies are going the cheapand-nasty route leaving local manufacturers in a perilous position
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It begs the questions why we are making duties so low that their final price beats the local price even with duties and transport taken into account? Manufacturing top quality valves is a passion
Much effort has gone into establishing a top quality operation
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Dipl.-Ing. R端diger Wolf
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Comparison with other M&V approaches - timing
Comparison with other M&V approaches - influence vs cost
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Figure 3: Contractual Relationships in the reference case Puerto Errado 2
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Figure 4: Typical IC Determination Task: Is there sufficient access to the valves and sensors as per contractual technical specification provided?
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Conclusion
•wt4820 verder sa mechanical engineer advert feb 2014.pdf
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2014/02/07
12:16 PM
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Problem solving chart YES
NO
Does it work?
Dont mess with it
Did you mess with it?
YES
Idiot
Does anyone know?
YES
YES
NO Are you in the dwang?
You poor bastard NO
NO
NO Bin it then
Hide it Can you blame someone? YES
No problem
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Fig. 1: Traditional style, five-piece coupling
Fig. 2: Drop-In Style, three-piece coupling
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Fig. 3: Misalignment types
Fig. 4: Single and Double Flexing Couplings.In this illustration, parallel misalignment imposes angular misalignment “A” equally to each flex element in the“double hinging” effect shown. Angular offset “B” of either shaft applies only on one flexing element and is additive to the parallel component to get the total misalignment “C.”
Fig. 5: End Float Compensation
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Fig. 6: Driver/driven hub bolt hole pattern
Fig. 7: Torque Compression Forces
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Fig. 8: Common blade types
Maximum Compression Areas
Maximum Tensile Areas Fig. 9: Torque stresses. Loading variations are dependent on application conditions.
Maximum Tensile Areas
Maximum Compression Areas Fig. 10: Axial deflection stresses Maximum stress occurs in areas where the discs are wrapped around the curved element washer. Tensile stress on top surface; compressive stress on bottom surface. Mid-span and edge stress are relatively unaffected by axial misalignment. Overall stress level is somewhat higher in the scalloped design.
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Maximum Compression Areas
Maximum Tensile Areas
Maximum Compression Areas
Maximum Tensile Areas
H Y D RO - M E C - E u r o p e a n Q u a l i t y G e a r b oxe s Helical, Bevel, Worm and Planetary Gears in Stainless Steel, Cast Iron or Aluminium Casings. Full Modular Design with Standard IEC Motor Inputs
JHB: 011 452 1415
DBN: 031 304 9757
C T: 0 2 1 5 1 1 8 1 4 3
w w w. s t o n e s t a m c o r. c o. z a THE SOUTH AFRICAN MECHANICAL ENGINEER
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MARKET FORUM
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MARKET FORUM
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MARKET FORUM
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MARKET FORUM
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Ricardo Garib
Johan van Graan
Lea Bodenstein
Loshini Govender
Salisha Dhanasar
Annemie Willers
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We drive industries
Gear units and motors from SEW-EURODRIVE have always set the trend and established new standards in drive technology. For this reason, the quality label “made by SEW” has become a hallmark of quality in the drive industry. Market-orientated products developed and manufactured in-house, as well as uncompromising quality, are the cornerstones of our success. SEW-EURODRIVE - Driving the world.
Tel: +27 11 248-7000 Web: www.sew.co.za
1THREAD_7046_SME
SEW-EURODRIVE – Driving the world