GENERAL SPECIFICATION FOR FRONT LOADING KILNS

model 1000S studio
Background

Our front loading kilns have a collective development of over 50 years.
Scope
Kilns from 0,012 – 3,50 cb/m (1 – 125 cb/ft) are offered as standard and cover kilns suitable for domestic pottery, schools, studio, through to commercial use. Front loading and trolley configurations are offered and are all rated to 1300 deg c.

HOBBY-CRAFT RANGE

300B TOP LOADING HOBBY CRAFT

Hobby Craft - We believe this range represents the best compromise between technical integrity, economic value and thermal efficiency.

Construction
The Hobby Craft front-loading range is fabricated from 5mm angle iron, an integral stand is provided to give easy working height. 114 mm of K23 low thermal mass brick, provide the hot face insulation backed up by 65mm of high grade vermiculite, the cold face (outer skin) being a none asbestos super ceramic board providing total resistance to corrosion and a cool outer skin.
A large vent is located in the door to allow cone observation and coupled with a roof vent brick, when removed allows for convection to occur through the kiln for both removal of volatiles and moisture during the firing and an increased cooling rate (if desired) after firing.
The door (standard left hinged) is suspended on sturdy engineered hinges, with a brick to brick door plug giving a good radiant seal without the use of sealing strips and minimising corrosion in the upper door area.
Kanthal A1 alloy element wire is specified for the elements with close attention to design detail giving good element life. Close attention has also been given to element layout to give good gradient firing characteristics.

Temperature control Hobby-Craft range
The standard Hobby Craft kiln is provided with a ORTON Digital programmable temperature controller, allowing a selection of SIX multi stage programmes (with 8 ramps, 8 set points and eight soaks in each programme) The instrument is ambient temperature compensating and comes with an open circuit protection, switching the kiln off in the case of the thermocouple being damaged or burning out. Power switching to the elements is via a contactor. There is also a delay start facility.
The standard kiln uses a heavy gauge 3.2mm diameter type (k) chromel – alumel bead and wire thermocouple. The entire control system is mounted in a control box, which is mounted on the right of the kiln



STUDIO RANGE


OPEN 150 STUDIO KILN
Studio Range - We believe this range to be the epitome of the kiln building art, focusing on design, function and reliability without compromise. Every part of the kiln has been tested in the harsh African conditions, continuous research and development resulting in the kilns you see today.

Construction
The Studio front-loading range is fabricated from robustly engineered angle iron, an integral stand is provided to give an easy working height. 114 mm Thermal Ceramics K23 low thermal mass brick provides the hot face insulation backed up by ceramic fibre, the cold face (outer skin) being steel sheet, with a internal double chamber air flow system, providing resistance to corrosion by removing moisture and volatiles and keeping a cool outer skin.
A large vent (bung hole) is located in the door to allow cone observation. The kiln has an adjustable base and counter weighted roof venting system, which allows for convection to occur through the internal kiln chamber for both removal of the volatiles and moisture during firing and as an aid to speeding up the cooling process when required after firing.
The door (standard left hinged) is suspended on sturdy engineered hinges and lapping of the door brick to brick, provides an excellent thermal door seal optimising the available space in the kiln. The protruding brickwork from both the kiln and the door minimises the corrosion on the upper kiln and door sections. Three quarter cemented brickwork allows for internal refractory expansion and vertical internal expansion grooves minimise expansion and contraction cracks from occurring.
The flat internal roof provides maximum use of the chamber and is extremely stable with a unique Ultra-Furn internally braced support system.
Kanthal A1 alloy element wire is specified for the hairpin elements with close attention to element design detail giving very good element life. All the studio kilns have elements on all four walls and base giving excellent thermal gradient characteristics.

Temperature control Studio Range

The standard Studio kiln is provided with a fully programmable microprocessor temperature controller (sixteen programmes), digital set, and digital readout. Switching is via a contactor and the standard kiln uses a ceramic-sheathed type (R) platinum rhodium thermocouple, which for standard firing should last the lifetime of the kiln.