Question

neumann boundary condition

Answer 1

PCE - Pyrometric Cone Equivalent19MORD - Modulus of Rupture - Dry48 psiWABS - Water absorptionCone 05: 23% Cone 1: 15% Cone 5: 13% Cone 10: 7%FSHR - Firing ShrinkageTotal shrinkage: Cone 05: 6% Cone 1: 10% Cone 5: 11% Cone 10: 13%SVWT - Sieve Analysis Wet+35 mesh: 0.3-0.8 +48: 0.3-0.8 +65: 0.3-0.8 +100: 0.5-1.5 +150: 0.5-1.5 +200: 1.0-2.0 +325: 1

In 2003 this material became unavaiable. There were problems with consistency and lack of compatibility with light colored materials also produced at Gladding, McBean & Co. However as of Mar 2004 it was again available. The reintroduction was accompanied by a new data sheet on which the numbers only add up to 92.8? In addition the material is much more expensive and is more coarsely ground (some 30 mesh grit) so some companies began using substitutes. In March 2006 is was again unavailable.

Newman is a red burning, low plasticity, low dry strength fireclay useful in both plastic and casting bodies to impart red color. It has powerful staining abilities (beyond what its percentage of iron suggests). For example, even if diluted to 50% in a recipe the body can still fire bright red in oxidation. Newman clay has a very fine particle size coupled with some large impurity particles in the plus 50 and even plus 30 mesh range. The crude material color is bright orange. Not surprisingly, bodies containing it complement it with ball clay and feldspar.

Coming up with an economical substitut