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There are two
graphs available to display the formula values of a loaded recipe
over limit formula information. The Limits Graph and the
Al Si Graph are designed to assist you with:
- assessing
the melt characteristics of a glaze at given temperatures
- making changes
to a glaze using limit formula guide lines
- making material
substitutions so that the new recipe conforms to the original
formula
Both the Limits
Graph and the Al Si Graph displays respond automatically
to changes made to recipes in either recipe panels.
The
Limits Graph
When a recipe
is being entered or is loaded into a recipe panel, click the 
button in the tool bar to open the Limits Graph window. (Fig.1)
Fig.1
The Limit Formula Graph set to C.10 showing the unity formula
for the Cone 10 Glaze |
This graph uses
horizontal bars (gray and blue) to display oxide limits for the
set temperature. The graph is generated from limit formulae data
stored in a series of files kept in a folder called Limits. There
are a number of these tables offered. You can change the set of
limits used by clicking on the Load New
Limits item in the Action
menu of the Limits Graph window.
If you are aiming
to create a recipe which matches the formula of another the limits
graph will display the formulae of two recipes at once See Changing
A Recipe
The
Alumina Silica (AlSi) Graph
This graph is
designed to display only Al2O3 and SiO2 unity formula values. The
graph contains a blue rectangle which indicates the minimum and
maximum values for Al2O3 and SiO2 given in the limit tables for
the set temperature. This rectangle is another way of representing
the blue bars in the Limits Graph (Fig.1)
A 
indicates the
Al2O3 and SiO2 formula values of the recipe in the R.1 panel. If
a recipe is also loaded in the R.2 recipe panel then a 
indicates the Al2O3 and SiO2 values for that glaze.
Fig.2
The Al2O3 SiO2 Limits Graph set to C.10 with the Al2O3 and SiO2
values for the Cone 10 Glaze located. |
The Al Si Graph
will display a second limits indicator in the form of a dark blue
rectangle (Fig.3)
Fig.3
The Al2O3 SiO2 Limits Graph displaying a second limits rectangle |
In this
example the second limits rectangle has been displayed and
its temperature setting has been changed to C.6
A setting
such as this might be used to guide in making changes to e.g.
the Cone 10 Glaze such that it might melt adequately at Cone
6.
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Limits graphs
can also display formula information for all of the recipes in a
recipe database. Other graphs can be generated to display formula
data for recipes in a blend.
Follow
these links for more information about:
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