Keramicalia

09/01/2023

We are open, Happy New Year everyone.

23/11/2022

Here we have a client painting our Cement Paint on a plastic container, look at it stick, does not make patches and does not run down.

Ask us for more information on Whatsapp.

18/11/2022

We here at Keramicalia would like to Congratulate Michelle on her first published article. It is about structural changes in lithium iron phosphate, the cathode material in lithium iron batteries, due to synthetic modifications.

If you are interested in reading the article, you can follow the link.

10/11/2022

Playing with Fire!

04/10/2022

We now have WhatsApp for your convenience, do not hesitate to contact us for more information.

25/07/2022

Keramicalia would like to congratulate Michelle Thiebaut on receiving her Doctor of Philosophy in Chemistry on 18 July 2022 from University of the Witwatersrand. Michelle is an employee at Keramicalia.

Congratulations Michelle.

25/07/2022

Keramicalia would like to congratulate Khayekazi Nongwane on recieving her Honours in Civil Engineering on 13 April 2022 from University of Johannesburg, Khayekazi is the sister of our employee Welcome Nongwane.

Congratulations.

21/07/2022

19/10/2017

Newsletter 16 - Concrete Boat Race

13/04/2017

06/04/2017

Please note our factory is closed tomorrow the 7th April due to the National Stay Away.

If you have not collected your order today please arrange collection from Monday.

Apologies for any inconvenience caused.

11/01/2017

Please note that our phone and fax lines are down...you can reach us on our premicell 074 587 2728 or email us at info@keramicalia.co.za

01/12/2016

Keramicalia will be closing for the festive season on Thursday the 15th of December and Re-Opening on
Monday the 9th of January 2017.

If you require any materials for the early part of January, kindly forward your Orders.

We take this opportunity to thank all our clients for your valued support through the year of 2016 and we look forward to future business dealings with you.

Wishing you and your family a happy festive season and an amazing New Year.

13/10/2016

Casting Mega Huge Grinding Wheels

19/09/2016

Hollocast 1 is a cellular insulation material. It has an exceptionally high strength to density ratio and can be used as a structural member rather than just a filler. It has very low thermal conductivity due to its very fine structure. Hollocast 1 has very low permeability due to its closed porosity. Hollocast 1 is very easily mixed to a pourable consistency with +18% water, and flows right into the furthest corners, self-leveling

06/09/2016

CLONING
“Cloning” is what we call making a ceramic copy of a component. Most often we get a broken ceramic part to replace.

We glue the pieces together with Pratley’s quickset epoxy, then fill in the missing bits with Plasticast.

We soak the repaired model in motor oil overnight.

We build a box around it, usually with a steel pipe section or bricks.

If there are holes through the model we place steel rods through them, protruding to the sides of the box.
We melt Multimould blue and pour it over the model.

Once it is cool, we take out the model. Sometimes we need to cut the mould to relieve undercuts or release enclosed holes. Then we pour in one of our Refractoramics, for example Electricast for electrical insulators. After about 2 hours we strip the casting and if necessary fettle it with our fettling sticks. Then we fire it, usually 1250°C with 5 hours soak. The finished product is about 1½ % linear smaller than the model. The process takes 2 to 3 working days from receipt of the broken model to delivery of the first fired components.
If no model is available, it can be machined 1½ % oversize out of any metal.

17/08/2016

MULTIMOULD

Multimould is a soft, highly elastic moulding compound. It has similar properties to silicone moulding compounds except that it is RE-USEABLE, hence the name "Multimould".
Multimould is a copolymer which melts at 160°C. It is non-toxic, but gives off fumes while molten which have a strong odour. It has excellent release properties and takes up very fine detail. No release agents are needed with Multimould. It has a high density (1,75) which helps pe*******on and levelling.
Multimould is ideal for making direct copies off metal, mineral or resin products. Its high elasticity allows moulding of large undercuts. Castings may be made in Multimould with cement, Plaster of Paris, resins, refractoramics, refractories, Hardcast, Versimould, silicone, polyurethane and polyurethane foam.

Preparation: Make a box to contain the model and the molten Multimould. Use solid materials as far as possible. Thermoplastics will fuse to molten Multimould. Porous materials like wood or Plaster of Paris should be soaked in oil first, otherwise the air in the pores expands with the heat and comes out as bubbles. Melt the Multimould in a microwave oven until pourable. If bubbling and odour are noticeable, reduce heating rate. Multimould has a very low thermal conductivity and melting by any means other than microwave is extremely difficult. Pour the molten Multimould over the model in the box, covering the model. Allow it to cool back to rubber consistency. Strip the mould and cast your product. When you have made all the castings you require, the Multimould may be re-melted and used for the next mould.
Multimould costs R206/kg. This is cheaper than castable silicone compounds, which are not re-usable.
The standard colour is green, a soft, easy melting material. A harder quality is blue, more tricky to work with, for technical moulds where distortion is a problem. Clear Multimould can also be made, where the casting can be seen through the mould to inspect for bubbles etc. Other colours can be ordered

12/08/2016

PIZZA OVEN FLOOR MIX
This is a high density thermal shock resistant mix designed to store heat. It can withstand repeated heating to 900°C and quenching in water.

The high density results in high thermal mass, and the material has found a number of applications for heat storage and others for heat dissipation.

Density: 2,8kg/l
Maximum service temperature: 1100° C.
Cold crushing strength: 20MPa
Maximum particle size: 6mm
Water addition: +9%

Installation: For pizza oven floors, vibration cast the floor upside down on a sheet of smooth formica, about 15mm thick, then cast insulation behind it, preferably Keralite 2. This gives a very smooth surface, which makes pizzas easy to handle even if the base is soggy.

Packaging: 15kg plastic bags.

Claimer: This information had better be correct, as Dave Onderstall stakes his reputation on it.