Reference NumbersSRP - 2986
ManufacturerHitco Electricals Pvt. Ltd., India
Hitco tubular heaters are the most versatile and widely used sources of electric heat for industrial, commercial and scientific applications. They can be designed in a wide range of electrical rating, diameters, lengths, terminations, and sheath materials. Important and useful characteristics of tubular heaters are that they can be formed into virtually any shape, brazed or welded to any metal surface, and cast into metals. Carefully researched manufacturing methods precisely selected materials, kept Hitco tubular heaters stand apart from other heating elements.
The cut-away view shows the tubular heater's basic construction. A computer designed helical coil of 80 percent Nickel 20 percent chromium alloy resistance wire is fusion welded to the nickel-coated steel terminal cold pin. This coil assembly is precisely stretched and centered in the element metal sheath, which is then filled with Grade A magnesium oxide powder (MgO). The filled tube is then compacted by a roll reduction mill into a solid mass, permanently stabilizing the coil in the center of the tube while providing excellent heat transfer and dielectric strength between the coil and the sheath.
Comprehensive selection in tubular heaters:
- Straight & formed tubular heaters
- Finned type tubular heaters
- Tubular heaters with bulk head fittings
- U-shape & M-shape tubular heaters
- l Flanged tubular heaters for water, oil, air and gases etc.
- l Tubular heaters for hot runner manifolds
- Available in standard types & customized.
- Available in different sizes of tube diameters;
- 1/4", 3/8", 1/2", 5/8".
- Available in different sheath materials, Incoloy 800, Inconel 600, S.S. 304 & S.S. 321, S.S. 316, S.S. 310, copper, titanium etc.
- Computerized designed.
- Variety of terminated options
- Variety of shapes & sizes.
- Long lasting and durable.
- Available in different square & flat profiles Example: 6x6, 7x7, 8x8 mm.
Standard specifications & tolerances of high density cartridge heaters:
- Domestic appliances
- Engineering industry
- Shoe machine
- High vacuum applications
- Laboratory apparatus
- Packaging industry
- Molten materials
- Contact surface heating
- Radiant surface heating
- Hot runner moulds etc.
Standard or custom designed:
Tubular heaters are manufactured in a complete range of standard physical dimensions, electrical ratings and lead terminations. Some of our heaters are available from our stock sizes. Hitco engineers will design and manufacture tubular heaters to meet your requirements.
- Diameter tolerance: +_0.1 mm
- Length tolerance: upto10" long +_2 mm
- Over 10" +_2% of sheath length
- Minimum length: 250 mm
- Tubular heater with flanged or bulk head fittings.
- Pressure tests for leakage as per customer requirements.
- Maximum voltage: 440 Volts (Dependent upon diameters & lengths)
- High voltage stability: 1500 Volt AC (Cold)
- Insulation resistance: > 5 M W
- Leakage current: <0.2 mA at 253 Volt AC
- Temperature of connection head & connection lead wire: 500 degree F
- Wattage tolerance: +_5 percent; -10 percent
- Resistance tolerance: +_10 percent; -5 percent
Hitco heaters are subjected to various in-process production checks. Final testing is done on 100 percent production to ensure conformity to essential safety aspects of european directive relating to electrical equipment and relevant requirements of harmonized european standards.
Tubular heaters for hot runner manifolds:
Mold heaters are custom made using 6 mm, 7 mm or 8 mm diameter Incoloy heating elements with threaded stud or lead wire termination. These heaters are also available in different square & flat profiles. Example 6x6 mm, 7x7 mm, 8x8 mm.
Important information on forming:
Precise forming of the heater is required for it to seat properly into the milled slot in the mold. To insure this fit, we normally use a template as an inspection of the milled slot in a plastic or aluminum plate, customer supplied or manufactured by Hitco.
Heat transfer cement:
When tubular heating elements are used in a milled slot any air gaps between the elements and the plate can cause hot spots on the elements. Heat transfer cement is used to fill these air gaps, permitting the heaters to run cooler thus maximizing its life expectancy. Cement is water soluble and can be applied with a putty knife or trowel and can be used in temperatures up to 12050 F (6500 C) Part Number HTC - 1205.
(For picture, please see next page)
For More Details Contact:
Ms. Anuradha Gupta
Hitco Electricals Pvt. Ltd.
Tel: + 91-11-41061011