http://www.engineeringnews.co.za
  SEARCH
Login
R/€ = 13.74Change: 0.09
R/$ = 10.96Change: 0.07
Au 1190.33 $/ozChange: 9.79
Pt 1205.50 $/ozChange: 16.00
 
 
Note: Search is limited to the most recent 250 articles. Set date range to access earlier articles.
Where? With... When?








Start
 
End
 
 
And must exclude these words...
Close Main Search
Close Main Login
My Profile News Alerts Newsletters Logout Close Main Profile
 
Agriculture   Automotive   Chemicals   Competition Policy   Construction   Defence   Economy   Electricity   Energy   Environment   ICT   Metals   Mining   Science and Technology   Services   Trade   Transport & Logistics   Water  
What's On Press Office Tenders Suppliers Directory Research Jobs Announcements Contact Us
 
 
 
RSS Feed
Article   Comments   Other News   Research   Magazine  
 
 
Nov 19, 2004

What's next in the world of welding

Back
Engineering|SHANGHAI|China State Shipbuilding Corp|Design|Honda|Industrial|PROJECT|Safety|Stainless Steel|Toyota|Welding|China|South Korea|Building|Crude Steel|Energy|Gas Carriers|Manufacturing|Metal Inert Gas/metal Active Gas|Products|Steel|Steel Consumption|Transport|Tungsten Inert Gas|Changxiang Island|Shanghai’s Changxiang Island|Chinese Government|Environmental|Maryland|Laser|Manufacturing Technology
Engineering||Design|Industrial|PROJECT|Safety|Stainless Steel|Welding||Building|Energy|Manufacturing|Products|Steel|Transport|||Environmental||
engineering|shanghai|china-state-shipbuilding-corp|design|honda|industrial|project|safety|stainless-steel-company|toyota|welding|china|south-korea|building|crude-steel|energy|gas-carriers|manufacturing|metal-inert-gasmetal-active-gas|products|steel|steel-consumption|transport-industry-term|tungsten-inert-gas|changxiang-island|shanghairsquos-changxiang-island|chinese-government|environmental|maryland|laser|manufacturing-technology-technology
© Reuse this Since the introduction of the coated electrode 100 years ago, several other processes have been invented, for instance SAW (submerged arc welding), TIG (tungsten inert gas) welding, MIG/MAG (metal inert gas/metal active gas) welding, plasma cutting and FCAW (flux cored arc) welding.

What can we expect to come next? Will mechanical joining processes or structural adhesives be a threat to the traditional processes? Welding today is closely allied to the consumption of metals. Steel dominates and will continue to do so for the foreseeable future. Global consumption has grown at 1,4% a year during the last decade. With the extremely high consumption growth in China during the last five years (26% for 2003), the global consumption of crude steel is expected to exceed a billion tons.

China is by far the largest consumer of steel, with 27% of the world’s production. With more than a billion citizens and an increasing ownership of products such as motor cars, the growth of steel consumption will continue.

Steel consumption in China is also influenced by a growing shipyard industry. The Chinese government is committed to becoming the world leader in shipbuilding, surpassing the current leader, South Korea. Work has begun in China on what is the world’s lar- gest shipbuilding yard. The new yard is being constructed along 8 km of coast on Shanghai’s Changxiang Island. It is scheduled to be fully operational by 2015, and will help China State Shipbuilding Corp to become the world’s top shipbuilder. It will have an annual capacity of 8 mdwt for building supertankers, gas carriers and cruise ships.

Stainless-steel consumption in the world has a steady growth of 5,5% a year. It dropped below 20 Mt three years ago, but exceeded this level in 2003, reaching 21,5 Mt. China contributed to this with its 54,2% growth in 2003. This requires the use of high-quality welding processes, such as TIG and plasma welding. Laser welding is also anticipated.

The change in aluminium consumption is much lower than expected at 2,8% year, on average, for the period 1990 to 2003. This figure will dramatically change when aluminium is more commonly used in cars and in other parts of the transport industry. The number of cars with an aluminium body is increasing. Audi, Jaguar, Honda, Toyota, Ferrari, Mercedes-Benz and GM are among those offering such cars to reduce environmental impact and improve passenger safety. All structures can be designed to absorb the same energy as steel at only 55% of the weight. Design concepts in aluminium are continuously changing to reduce the manufacturing cost of aluminium bodies. A former MD for Audi claimed that the aluminium car body was about €500 more expensive than steel.

The manufacturing technology for aluminium bodies needs to be further improved, for example mechanical joining with clinching and self-piercing riveting processes. Laser/MIG hybrid welding is another joining process that results in lower heat distortion and a stiffer car body. It will be a considerable time, however, before aluminium exceeds the use of steel. In 2003, some 26,4 Mt of aluminium was produced, about half being used in industrial products and in capital goods compared with steel manufacturing with 855 Mt.

To counter the higher use of aluminium, the steel industry has introduced advanced high-strength steels in the body and other parts of the car. It was developed in a project, known as Ulsab, financed by 33 steel companies. Porsche Engineering produced the conceptual design, ending up with weight savings of 200 kg.
Edited by: Karel Smrcka
© Reuse this Comment Guidelines (150 word limit)
 
 
 
 
 
 
 
 
Other Welding and Cutting News
KENYAN CONNECTION Kenyan Bureau of Standards engineering workshops head Samuel Njoroge and Southern African Institute of Welding School of Practical Welding head Frans Vorster
The formation of the African Federation of Non Destructive Testing (AFNDT) and the possibility of a joint venture (JV) partnership between the Southern African Institute of Welding (SAIW) and the Kenyan Bureau of Standards (KEBS) could significantly assist in the...
African Oxygen Limited (Afrox) is sub-Saharan Africa’s leading supplier of gases, welding and safety products, employing 3 000 people and operating in South Africa and 11 other African countries. It manages operations in five more countries on behalf of its parent...
SEAN YOUNG There are multiple applications for argon in manufacturing and fabrication sectors, and the demand is growing
Argon is the most abundant, and cost-effective inert gas, which is why it is widely used in manufacturing and other industrial processes, states industrial and speciality gas manufacturer and supplier Air Products South Africa welding specialist Sean Young. “As a...
More
 
 
Latest News
There were signs of progress this week on the long-awaited Tripartite Free Trade Agreement (T-FTA), which has been under discussion between the Common Market of Eastern and Southern Africa, the East African Community and the Southern African Development Community...
Majuba power station
Nearly a month after the catastrophic failure of the 10 000 t central coal-storage silo at its Majuba power plant, State-owned power utility Eskom could face the collapse of another silo if urgent action is not taken, Solidarity claimed on Thursday. The...
The Competition Commission would refer a case against Isipani Construction to the Competition Tribunal for its alleged involvement in collusive tendering for the building of the 2010 FIFA World Cup stadia. This followed an investigation of the firms that did not...
More
 
 
Recent Research Reports
Defence 2014: A review of South Africa's defence industry (PDF Report)
Creamer Media’s Defence 2014 report examines South Africa’s defence industry, with particular focus on the key participants in the sector, the innovations that have come out of the sector, local and export demand, South Africa’s controversial multibillion-rand...
Road and Rail 2014: A review of South Africa's road and rail infrastructure (PDF report)
Creamer Media’s Road and Rail 2014 report examines South Africa’s road and rail transport system, with particular focus on the size and state of the country’s road and rail network, the funding and maintenance of these respective networks, and the push to move road...
Real Economy Year Book 2014 (PDF Report)
This edition drills down into the performance and outlook for a variety of sectors, including automotive, construction, electricity, transport, steel, water, coal, gold, iron-ore and platinum.
Real Economy Insight: Automotive 2014 (PDF Report)
This four-page brief covers key developments in the automotive industry over the past 12 months, including an overview of South Africa’s automotive market, trade figures, production and the policies influencing the sector.
Real Economy Insight: Construction 2014 (PDF Report)
This five-page brief covers key developments in the construction industry over the past 12 months. It provides an overview of the sector and includes details of employment in the sector, infrastructure and municipal spending, as well as insight into companies’...
Real Economy Insight: Electricity 2014 (PDF Report)
This five-page brief covers key developments in the electricity industry over the past 12 months, including details of State-owned power utility Eskom’s generation activities, funding and tariffs, independent power producers and prospects for the sector.
 
 
 
 
 
This Week's Magazine
Updated 6 hours ago JSE-listed real estate investment trust (REIT) Rebosis Property Fund achieved a distribution growth of 8.1% to 99.45c per linked unit in the financial year ended August 31, despite volatile market conditions.
JAMES ROBERTS The MOM incubator was designed to help babies in developing nations who were dying in conflict-struck nations or who do not receive hospital care
Updated 6 hours ago A low-cost, inflatable incubator won this year’s international James Dyson design award, which aims to encourage and inspire the next generation of design engineers.
Updated 6 hours ago The World Bank released its ‘Doing Business 2015: Going Beyond Efficiency’ report last month and ranked South Africa 43 out of 189 global economies for its ease of doing business, with Singapore topping the rankings.
Updated 6 hours ago Air Products South Africa officially launched its R300-million Eastern Cape air- separation unit (ASU), at its new manufacturing facility in the Coega Industrial Development Zone (IDZ), earlier this month. It is the second facility that Air Products launched in South...
Updated 6 hours ago BMW South Africa (SA) has signed a power purchasing agreement with energy company Bio2Watt. The offtake partnership will bring renewable energy to the carmaker’s Rosslyn plant, north of Pretoria.
 
 
 
 
 
 
 
 
 
Alert Close
Embed Code Close
content
Research Reports Close
Research Reports are a product of the
Research Channel Africa. Reports can be bought individually or you can gain full access to all reports as part of a Research Channel Africa subscription.
Find Out More Buy Report
 
 
Close
Engineering News
Completely Re-Engineered
Experience it now. Click here
*website to launch in a few weeks