resistant linings
how do you prep surface before hex metal install?
Blast or Grind to present clean surface.
Holds the lining in place/attached to shell
Anchors
Primary concern of any Demolition
Safety
The working lining is also Known as?
The Hot face lining.
once installed castable must be _____ before the burn-in?
Cured
Hex metal and Hex Mesh help retain _____ linings
Resistance linings
The tip of the anchor is _____ far from hot face?
One inch?
Many Refractory vessels shut down for?
Inspection
name four basic shapes of refractory brick.
straight, key, arch, Wedge
Plastic Refractories require no _____ prior to installation
Water
What are wall seats used for?
Lining wall support?
C clips / scissor clips Typically used for?
Roof & sidewalls
who often is responsible demolition?
Bricklayers/Apprentices
Correct dimensions of a 9 inch straight refractory brick
9"x 4.5 x 3
Name three methods of bonding of plastics?
Heat, Air, Chemically.
A dull sound when striking the lining indicates?
Voids
Y anchors are typically used for?
Thick linings/dual linings
Are visible glowing red spots on the shell?
Hot spots
Used for the lining of heat containing vessels.
Refractory materials
The back up lining prevent _____ from escaping?
Heat
What creates voids?
Improper installation?
Are used for higher temperature applications
Ceramic Anchors
Any Demolition job should be undertaken in accordance with?
Job specifications, company Policies,& government regulations.
how much water should be added before mixing castables?
20%
When hex mesh is used each Hex is filled with?
Refractory