Tech Support

Software updates

MP100S - Porcelain Furnace

  • HMI Version: v2 - 05/2023
  • Mainboard Version: v2 -05/2023

MP200 - Porcelain Furnace

  • HMI Version: v14 - 05/2023
  • Mainboard Version: v14 - 05/2023

MP1500 Speed ​​Multistep

  • HMI Version: v15 - 15/7/2023
  • Mainboard Version: v14 15/7/2023

Sinter Furnace programs for common zircon blocks

Sinter Furnace Problems and Solutions

Colorations are caused by used liquids or chemicals in zirconia blocks.

Color liquids are often used to color the ZrO2 ceramics. They contain metal salts and other compounds dissolved in a liquid. Acids were once commonly used for this. Today, most of the available liquids are water-based.

Vapor pressures of different oxides at surface temperatures of heating elements in use. will form many different oxides during firing, such as Fe2 O3 , CuO, MnO, Co2 O3 , Bi2 O3 , ZrO2 , V2 O3 , CrO2 and others which discolor the zirconia.

The main suspects are always the tray and chamber or the heating elements. 

White spots

The source of white spots on work pieces is often quartz crystals that have been shed into the crucible, the pot itself, or the material in the pot, such as sand or beads.

You can inspect your resistors up close by taking a video of them with a phone. If you detect white scaling on the shiny protective silica surface, your problem is sourced here and it is recommended that you renew the resistors.

A more difficult source to detect can be devices that generate metal dust. For example, if the metal of the burs you are using is not suitable for zirconia and creates invisible metal dust, its effects will also be reflected on the work pieces.

The easiest way to identify the source is to apply our chamber cleaning program, separate the crucible, break off a piece of the zirconia discs, clean it, and sinter it without the crucible. If the problem persists, please refer to our articles to recreate the silica layer of the resistors. It is possible to extend the life of the resistors a little by regeneration, but it is also a sign that the time for replacement has come.

Greenish shade in work

This is caused by MoSi2 heaters losing their protective silica layer. To understand this, you can take a video of the heaters from the bottom of the furnace chamber with the help of a phone and make a detailed examination. The outer surface of your heater should be shiny and flat.

If it there are slightly rough spots, these roughnesses are formed due to contamination causing oxidation and reacting with the silica layer. The silica layer can repair itself to an extend. Run the regeneration program to try regenerate the silica layer.
To regenerate the silica layer, please review this article.

If the surface is very rough and cannot repair itself, your resistance has completed its life and should be replaced. The resistance life depends on many variables and is usually between 6 months and 2 years depending on the intensity of use, but it can give up earlier in difficult conditions or it can work for long years if you are working with high quality and harmless zircon blocks.

Yellow or Dark Colors in Work

If the oven is not used continuously (if it gets cold), oxidation starts to occur around the tray holder and inside the chamber. This oxidation discolors your work.

It is recommended to clean the chamber periodically until you reach the color quality you want in your works.
Please review this article to clean the chamber and tray.

Heating seems low or too much.

If you have just setup your furnace, you should run a test program with broken zirconia pieces. The heat callibration of the furnace is very delicate and it is effected by humidity, height of the area and can also shift during transpotation.

You can adjust the offset by entering:

- (minus) for undercooking

+ (plus) values for overcooking

in the offset setting of your oven.

To adjust the offset temperature, please review this article

With the use of heater elements and thermocouples of the ovens over time, the heat / offset adjustment may shift. It is reccomended to callibrate your furnace every 6 months.