Page 28 - Glass Machinery Plants & Accessories no. 2/2018

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HORN GLASS INDUSTRIES

RESTRUCTURING AND

EXPANSION OF LEADERSHIP

After 18 years of of the company. out a restructuring and in various functions,
responsibility as a Although the separation expansion of its leadership. including as project
Managing Director and was mutually agreed the Mrs. Firsova and manager.
member of the Executive company greatly regrets Mr. Imhof have been Mr. Ulrich Imhof will
Board, Christian Jatzwauk the departure of Jatzwauk. working as authorized be responsible for the
has officially retired from In order to improve signatories for the two container/special glass
the Executive Board of a globally expanding main business areas business unit.
Horn Glass Industries. business in the areas of since 1 October 2017. Mr. Imhof began his
Jatzwauk is leaving the container/special glass, In future, Mrs. Ekaterina career in the container
company at his own as well as in the area of Firsova will be responsible glass industry in 1989 and
request in order to technological turnkey for the business unit joined Horn in 2012.
face new professional plants for container technological glass plants. Since then, he has
challenges. and float glass of Horn Since 2003, Mrs. Firsova been the sales director
During his work at Glass Industries, which has played a key role responsible for the Asian
Horn, he has contributed will continue to be led in the development of division and, from 2015,
significantly to the by Mr. Stephan Meindl, the turnkey plants/float also head of the container/
development and success has, therefore carried business unit at Horn special glass division.

VDV LUBRICANTS

CONTROLLED AND LIMITED CORROSION IMPACT

ON MOULD EQUIPMENT

Mould swabbing operation is key for the glass forming - Reference containing five different selected anti-
process. Swabbing lubricants are a combination of different corrosive agents
chemicals and the use of them combined with the high - Test conditions:
temperature creates undesired effects on equipment, on - Copper plated heated at 500°C. Copper has been
glass and on people: corrosion and smoke. Glassline® selected as it is the most sensitive material to observe
lubricants reportedly offer the best compromise. corrosion.
Swabbing lubricants do contain sulphur; this chemical is - During 10 days and each 20 minutes, application of
necessary as it plays a role as lubricating improver when swabbing lubricant droplets on the heated metal surface.
extreme pressure (EP) is present. EP conditions is definitely The results expected were very present and can be
present when the gob is formed to a glass bottle through summarized as follows:
the different processes (blow/blow, press/blow or NNPB). - Surface damaged = metal losses and irregular surface
Unfortunately, sulphur (and for sure excess of sulphur) has - Without anti-corrosive agent the average damage is:
a metal corrosive impact, especially on bronze and bronze/ - 120 to 212μm metal losses or 13 to 23% of original
nickel moulds; this negative effect will directly impact the surface depth
quality and lifetime of mould equipment but also indirectly, - With anti-corrosive agents is the average damage:
glass bottles defects can occurred. - 28 to 166μm metal losses or 3 to 18% of original surface depth
In 2016, VDV Lubricants decided – in partnership with a The best result is only an average of 3% metal loss/depth
specialised Belgian research institute (BIL) – to identify and damage. The main technical conclusions from this study
quantify the corrosion effect of swabbing lubricants during are the effective impact of corrosion damage of metal
their application on heated metal surfaces; the objective was surfaces during swabbing operation and the existing option
to come out with at least 1 solution. to considerably limit this negative effect. Putting this within
Without going in details, some basic data from this study: glass manufacturing activity, it is clear that mould metal
- Swabbing lubricants tested: losses and surface damages are potential risks to create
- Reference = typical swabbing formulation containing glass inclusions, metal contaminations of the inner content
standard base oil, a package of additives (including of the bottle and so leading to quality claims. Additionally,
sulphur based products) and graphite. the lifetime of the moulds is reduced and will generate cost <

26 glass machinery plants & accessories 2/2018