National Element, Inc.

United States

Rod elements are widely used in industry for convection heating, conduction heating and radiation heating. They can vary considerably in shape and size and are used extensively in Lindberg and Old Sauder type furnace apparatus. Heating rods are versatile because they can be bent into any shape and operate at high temperatures. National Element Inc. uses NIKChrome alloys and Iron-Chrome-Aluminum Alloys and pure molybdenum in manufacturing electrical rod elements. Rod heating element sets are typically mounted on sidewalls, floor, door and back wall. Most elements are kinked to raise it off of any insulation. Floor elements are often suspended on piers to allow for debris to collect underneath the elements. NEI carries a full compliment of terminals for rod elements and machine to accommodate electrical terminal clamps.ENGINEERING SPECS Rod sizes begin at 6 GA. (.162 dia.) and usually do not exceed 12 diameter.NIKChrome alloys for use up to 1250C2280FKanthal alloys for use up to 1440C2550FMolybdenum for use up to 1900C3452F or 100 watts per square inch of surface area

The electrical path of the Firebar radiates outward from the central core providing effective heat for the full length of the radiant tube. The Firebar design concept allows replacement of individual conductors without replacing the complete unit. 80Ni-20Cr heavy round rod conductors make Firebar compatible for many different applications that need specialty alloys. Each circuit contains a thermocouple for control start up. Stock shipments include operating instructions, terminals, insulation, all internal connections, and, if necessary, a base plate for vertical operation.Process temperatures to 1850FCapable of liberating 85 BTUs of energy per square inch of pipe surfaceConductors made of 80Ni-20Cr heavy round rodHorizontal or Vertical InstallationsLengths from 18 to 10Six sizes of heavy round rod in two rows (for most kilowatt requirements)Standard diameters: 2-34, 3-14, 3-58, 4-14, 4-78, 5-14, 6, 6-38, 6-18, 7-34Typical Atmosphere Applications: Air, Inert, Strongly Reducing

Steel construction belts from National Element are especially adaptable to conveying heavy, rough or sharp material. An assembled belt consists of hinged links, side wings, tubes, thru pins and dual strands of roller chain. The hinged links are assembled in horizontal rows by passing the tube through the hinges. The thru pins are inserted into the tube and fastened into the side chains thus supporting the links and causing the chain to take all the tension.BushingsSteel bushings = 15-18% coefficient of frictionNylatron bearings = 10-13% coefficient of frictionRoller bearings= 4-5% coefficient of friction Steel LinksStandard plain steel links precision welded in widths of :24 ( 18 thick flat top and piano hinge plate belts)6 (316 belt)12 ( belt) HingesHinges formed in 1-12 3 increments on the link to allow special belt widths of the same 1-12 increment. Side wingsSide wings interlocked and afford continuous overlapping through bends and over the sprockets. Mig welding to the belt prevents thin pieces of material from getting under the wing.Standard sizes:18 thick x 1-12 for 2-12 pitch18 thick x 2-12 for 4 pitch316 thick x 3 or 4 for 6 pitch316 thick x 4 or 6 for 9 pitch TubesThe tubes are .760 I.D. x .970 O.D. steel running through the hinges for the complete belt width and rotates on the thru pin for a better bearing area. Maintenance is easy because it is not necessary to disconnect the belt at a hinge point to remove a pin. It is the tube that holds the belt together. Pins12 dia. thru pin with milled ends and 532 S pin34 dia. pin with milled ends and 14 cotter pinheavy-duty belt pin with milled and threaded ends and 34 lock nut34 dia. split pins for easy maintenance in tight spacesPin, tube and hinge provides a 1-12 thick heavy-duty joint

A laboratory hot plate, sometimes called a heating plate is known for its long life and uniform heating distribution. They are used in research, classroom or clinics to heat liquids or solids to ensure that substances are kept at a specific temperatures. Hot plates heat from the bottom and provide a view of the contents being heated. National Element hot plates are available with 120VAC and 240VAC power and adjustable temperature range.