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Wolfensberger AG

Bäretswilerstr. 45, 8494 Bauma
Telephone +41 52 3961111
Fax +41 52 3961550

Hall map

NEWCAST 2019 hall map (Hall 13): stand A06

Fairground map

NEWCAST 2019 fairground map: Hall 13

Our range of products

Product categories

  • 01  Ferrous castings - Iron, steel and malleable foundries
  • 01.02  Production processes
  • 01.02.005  Other precision casting processes

Our products

Product category: Other precision casting processes

Precision Casting

The casting method of choice for complex components. 
The Exacast® ceramic precision casting process is an interesting alternative to casting methods like investment casting and shell moulding. The Exacast Process was developed by Wolfensberger and registered under the Exacast® brand name. As the name suggests our precision casting process allows for the accurate casting of complex components. Reusable patterns made of plastic, metal, wood or silicone rubber are coated with a quick-hardening ceramic and then fired. The alloy that is then cast into the preheated moulds is able to flow into extremely thin walled sections. A wide choice of steel and cast iron alloys can be cast as per customer requirements.

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Product category: Other precision casting processes

Tolerances In The Exacast® Precision Casting Process.

The tolerances for Exacast® precision casting are based on VDG instruction sheet P 690 for investment casting. The tolerances specified in the sheet can be largely complied with. The only non-compliance that occurs relates to the non form-bound dimensions, for example over the mould partition or from the core mould to the outer mould, and even these do not exceed D1 in VDG standard P 690. If the precision casting tolerance is not adequate, a machining allowance must be added .

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Product category: Other precision casting processes


Unit weight: 2 to 120 kg
Heat-resistant steel casting, nickel-base alloys
Diameter: 200 to 1000 mm
Dimensional tolerance up to D3 (VDG information sheet P 690)
Wolfensberger developed special pattern facilities that can be combined. The flow diameter of the nozzles machined ready for assembly is measured with a computer-controlled test system and logged. Tolerances are called for here in excess of the D3 degree of accuracy required for investment casting in compliance with VDG specification P 690. Unlike the previous welded construction, Exacast© ceramic precision casting means less rejects because of a lower likelihood of cracking, as well as higher strength and resistance to wear. At the moment, ABB Turbo Systems takes delivery of over 12,000 nozzles in 300 variations annually.

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About us

Company portrait

Your partner for expert casting solutions.
Right from our initial contact with you, we work together actively with you as a competent casting and materials-engineering partner. 

Our specialists will advise you in all matters relating to casting processes, materials and machining. We also provide competent support for individual problems and develop new and innovative solutions in cooperation with you. 

As experts in sand casting, precision casting Exacast® and machining, we offer many years of specialist competence which has proven its worth over time.