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Blisters

Blisters is a common enamel defect, which is characterized by appearance of circular holes & bubbles in a cooled enameled surface.

May occur as a group, cluster or line of blisters.

Blisters are typically caused by gas evolution during firing, as a consequence of :

  • Poor steel quality
  • Scratches or damage on base steel
  • Large welding seams
  • Insufficient cleaning
  • Over pickling
  • Over blasting
  • Impurities in enamel
  • Too thick enamel film
  • Too high viscous frits
  • Contamination of furnace atmosphere
  • Under firing
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Preshipment inspections

Our technical services include conducting preshipment inspections for industrial enameling equipment.

Below an example of a batch type spray-degreaser, made of stainless steel, which we recently inspected.

Preshipment inspections - example of batch type spray-degreasing
Stainless steel spray washer during preshipment inspection

 

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Smart Industry opens a world of possibilities

The world is in anticipation of a fourth industrial revolution.

This revolution is driven by giant leaps in ICT innovation and promises to radically alter the face of industry in the coming decades.

Smart industry

Automated production systems using advanced robotics increasingly communicate with each other on detailed aspects of production, joining up hitherto fragmented manufacturing processes.

By linking all steps in the value chain, a world of possibilities opens for companies, old and new.

See https://smartindustry.nl/english/ for more info about this topic.

 

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Fishscaling of porcelain/vitreous enamel coatings

Fishscaling

Fishscaling is an enameling defect, which is characterized by small enamel particles chipping off.

Chipping off may happen directly after firing when cooling down or sometimes even days later.

example of enamel defect called fishscaling

Effected products may usually not be repaired. Due to this reason, this defect is still one of the most described topics within the international enameling industry.
Continue reading “Fishscaling of porcelain/vitreous enamel coatings”

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Classic reference book about vitreous enameling

Received earlier today a new batch of “Porcelain (Vitreous) Enamels and Industrial Enamelling Processes” book.

enamel reference book

This classic reference book, which describes in detail many aspects of vitreous enameling technology & equipment is a must for every professional enamelist.

Please note that the current edition is nearly sold out !

This excellent book and other literature about vitreous enameling technology, may be found at our webshop (https://dtc-webshop.com) .

Buy book