Agarwal Enterprises

We are offering Strip Heater:

Selecting strip heaters requires an analysis of power requirements, electrical outputs, and physical dimensions. Maximum operating temperature, alternating current (AC) voltage, watts (W), and watt density are the most important power requirements and outputs to consider. Maximum operating temperature is the maximum temperature of the sheath, jacket, or sleeve. Watt density is the amount of wattage, per square inch, that a strip heater can deliver. It is calculated by dividing the available wattage by the heated area. As a rule, strip heaters with high watt density heaters should not be used with extremely viscous materials, materials that are not well-circulated, or explosive or volatile substances. Important physical specifications to consider when selecting strip heaters are strip length, strip width, and strip thickness.

There are many different termination types for strip heaters. Opposite end posts locate a post at each end of the heater. Tandem posts are in-line along the length of the heater while parallel posts are in-line along the width of the heater. Three-post terminals are similar to opposite end post devices, but position two posts at one end and one post at the other end. Horizontal leads run down the length of the heater. Terminal box connections are made through a protective enclosure on the surface of the strip heater. Other common termination styles for strip heaters use insulated leads, metal braided leads, and flexible conduit leads.

Strip heaters offer a variety of features. Products with a distributed wattage arrangement use a special coil pattern to concentrate heat distribution. Strip heaters with four enclosed sides are designed to prevent contamination. Devices that are made of corrosion-resistant materials are suitable for corrosive or caustic environments.

Offering Coil Heaters:

Coil heaters are heating elements formed from straight, uncoiled segments of heating cable. Forming straight cables into patterns increases the surface area and heat transfer capability, but also requires increased energy and watt density. Some include a grounding wire or provide distributed wattage arrangements to concentrate heat distribution. Coil heaters can be configured with different termination options. Armor cable, metal braids, and flexible conduits are used to protect insulated leads.

There are a variety of shapes and sizes for coil heaters. Some devices are straight, square, or rectangular. Others are round, coiled, spiral wound, or star wound. Spiral wound heaters are used to generate high temperatures in restricted areas. Star wound cables are offset coils inserted into pipes or ducts to create a turbulent flow in air or fluid. In terms of measurements, coil heaters vary according to coil inner diameter, outer diameter, length, and width.

Coil heaters are made from several different types of materials and typically include insulation. Sleeve, sheath, and jacket materials include aluminum, brass, copper, iron, nickel alloy, steel, and stainless steel. Insulation materials include ceramics, mica, minerals, and fiberglass. Mica is highly resistant to acids while fiberglass is impervious to many caustics. Some coil heaters may be fully or partially immersed in heated substances, while others are corrosion-resistant or suitable for cryogenic use. Clamping straps provide additional protection for coils and connections.

There are many applications for coil heaters. For example, larger devices are used in plastic injection molding machines, holding tanks, metallurgical analyzers, and pulp and paper processing. Coil heaters are also used in blow molding machines, oil reclamation equipment, and food and candy extruders. Smaller, localized devices are used in labeling, bag sealing, hot stamping, and packaging equipment.

We manufacture a variety of band and nozzle heaters including barrel heaters, mineral insulated band heaters and ceramic nozzle band heaters. Our product range includes best quality nozzle heaters as mica nozzle heaters that comprise of high quality heating element (windings) and nickel-chromium resistance wires.

We offer these in one-piece as well as two- piece designs. The mica nozzle heaters and ceramic nozzle heaters are manufactured using superior grade raw steel, aluminum or brass and thus are completely reliable and durable in the given operations.

Heaters with terminal options are also available such as flexible wire/pin socket and screw terminals. Clamping option for the heaters are provided by either bent ? up flanges or bolted angle system.

Features:

Manufactured using high quality steel, zinc and brass
High performance mineral insulation, Ideal for every type of plastic processing equipment.

- A mounting block clamped to the nozzle Inclusive of ground conductor Uniform and consistent heating

Applications:
Extruders
Blown film dies
Injection molding machines
Other cylinder heating applications

We are offering spiral heater. These are also called tubular heater in different shape specially in spiral.

Offering Air Heater:

Innovative air heaters from VISHOT Custom Products improve operational effectiveness, enhance product reliability, and reduce costs for our customers. We work closely with OEMs, plant engineers and end product designers providing custom air heaters for a broad array of applications. We serve the medical, automotive, food service, plastics, laboratory, packaging and manufacturing process industries.

Air heaters are used to heat air with forced convection, radiant heat, or resistive heating elements. Forced convection moves air past a heat source with a fan or blower. Radiant heaters radiate heat from coils that contain a heated, circulated media such as oil, hot water, or steam. Resistance air heaters consist of sheaths that surround a resistive heating element. The functional use of these tubular heaters is limited only by available space, maximum sheath temperature, and watt density. Air heaters with fins provide improved heat dissipation.

Many types of air heaters are available. Enclosure heaters also provide freeze protection and humidity control, along with equipment protection.

Parameters for air heaters include maximum air temperature, maximum air flow, and heating capacity. Maximum air temperature is the maximum temperature of air exiting from the heater. Maximum air flow is the maximum flow of air through the heater. Heating capacity is the wattage which the heater can deliver.

Air heaters are used in a variety of packaging, automotive, plastics, rubber, textile, and electronics applications. For example, air heaters are used to cure adhesives, de-flash molded parts, weld plastic or vinyl fabrics, and dry ink. In the semiconductor industry, air heaters are used in preheating process gases, soldering lead frames, wafer and PC board drying, and heat shrinking wire insulation.

We are offering Round Heater:

This is a particular round heater for Form Fill and Seal machine. This heater solve the problem of frequently failure of round heater in machine. Specially used in 1g to 100g pouch. This heater can increase the speed of machine without doing any other changes in the pouch packing machines.

We are offering space heaters. These are the low density heaters which are used to avoid earthing due to moisture in control panels and many other applications.

Offering Cast in Heater:

VISHOT are leading manufacturer in CAST-IN Electric Heaters for many Industries. Typically plastic die applications are highly temperature sensitive and require extreme heater uniformity and reliability. VISHOT Heaters are a logical choice to satisfy these critical application parameters. As the Aluminum alloy has excellent thermal conductivity and a highly reliable heating element which provides good contamination resistance. The result is a highly efficient, uniform heater which, if used properly, can be expected to provide years of trouble free service.

CAST-IN Heaters are generally manufactured in Aluminum but can also be made in Brass alloys to meet higher temperature processing requirements. For high volume requirements, the permanent mold process can be used to achieve the most effective economies of scale as well as yielding the best cosmetic appeal.

Offering Finned Heaters:

When solids, gases and fluids are to be heated by electric energy the process is generally carried out by conduction. It is only possible to transmit heat quickly by conduction if the producer of the heat (the cartridge) is in direct contact with the receiver of the heat (any solid, gas or fluid).

When heating takes place the molecules expand and move faster, producing a distribution of heat to the colder part until their temperatures level out.

If there is mould on which to drill in order to house a cartridge heater, and where the mould not to be in direct contact with the whole cartridge heater, the transmission of heat by conduction would occur, due to the fact the air molecules would not transmit the energy required to heat the mould. The heat would not be distributed but would remain within the cartridge heater, with the result of overheating of the latter, which, in turn, may bring about a reduction of dielectric strength between the heater wire, the power conductors and the weakening of the metallic protector, the result being a short-circuit. Therefore, the adjustment of the cartridge to the heater is of the most importance.

Just a few drops of water particles are enough to weaken considerably the insulating capacity of magnesium oxide.

Offering Split Type Cartridge Heater:

VISHOT Split Type Cartridge Heaters are developed for high temperature application. Helically wound resistance coil is placed inside the tube filled with MgO powder and compacted for faster and efficient heat transfer. More clearance can be provided for inserting split type cartridge. Heaters compared to standard conventional cartridge heaters. Can be inserted and removed easily. Longer life. Uniform heat transfer. Available in SS304 SS316 sheaths. Hot zone up to the tip of the element.

Offering Porcelain Heaters:

VISHOT Porcelain Heater, offer a large heated area to the gases, liquids or semi-solids to be heated when inserted into a thermo well. A feature of this type of heater is that it may be removed for repair or replacement without draining the contents of the vessel. The sheathing material may be M.S. or S.S. or Titanium or with clamp late, depending on the application.

In these type of Heaters open helical coils of high resistance wire is evenly stretched and laid through fluted refractory bobbins. These elements are then inserted into metal pipes of different diameters depending on the diameter of the fluted refractory bobbin, forming an integral part of the system. They are also welded to screw plugs of 1 2 or 2 BSPT. Material such as oil, wax, fats and bitumen require low heater surface temperature to prevent product degradation. For these applications the Ceramic Bobbin heater are ideal.

Offering Tubular Heaters:

Tubular heaters are used mainly in custom heating applications. They can be formed into various geometries and are designed for either radiant heating or contact surface heating. Often, tubular heaters are immersed in substances such as water, oil, or molten materials. Because they generate heat within the liquid or process, tubular heaters are extremely energy efficient. Suppliers categorize tubular heaters as single-ended or double-ended. Single-ended tubular heaters have two terminals at one end. Double-ended tubular heaters have one terminal at each end of the tube. Tubular heaters with round heating elements and flat or triangulated heating elements are also available. Dimensional considerations included heated length and heated width.

TUBULAR
Tubular heating elements are versatile and perform exceptional heat transfer by conduction, convection or radiation to heat liquids, air, gases and surfaces. In most heater assemblies, tubular element design configurations vary round, triangular, flat press and formed bends are made to customer requirements.

We are offering Ceramic Band Heater:

Band heaters are ring-shaped heating devices that clamp around a cylindrical element. Heat transfer from band heaters occurs via the conductive method. Most band heaters clamp around the outer diameter of a cylindrical element and heat the element from the outside. Some products clamp around the inner diameter of a pipe. Typically, band heaters are quipped with ceramic or mineral insulation to reduce heat loss to the environment.

Selecting band heaters requires an analysis of performance specifications and features. Parameters to consider include: maximum operating or sheath temperature, AC voltage required, and watts. Maximum operating temperature is the maximum temperature that the sheath covering the heater may reach. Note that maximum sheath temperature is not the maximum temperature that a heated substance may reach. AC voltage required is the minimum alternating current voltage required for band heater operation. Important dimensions to consider for band heaters include the inside diameter, width, and thickness of the band.

As a rule, the inside diameter of a band heater should be the same size as the outside diameter of the cylinder to be heated. Band heaters use a sleeve, jacket or sheath as a protective outer covering for the heating elements. Choices for sleeve material are aluminum, brass, copper, iron, nickel alloy, steel, and stainless steel. Typically, insulation is used to reduce heat loss to the environment. Choices include: no insulation, ceramic insulation, mica insulation, mineral insulation, and fiberglass insulation. Mica is valued for its electrical insulating properties and high resistance to heat and acids. Termination type refers to the method used to make electrical connections to the heater. Some band heaters have multiple options for the termination type.

We are offering Band Heater:

Band heaters are ring-shaped heating devices that clamp around a cylindrical element. Heat transfer from band heaters occurs via the conductive method. Most band heaters clamp around the outer diameter of a cylindrical element and heat the element from the outside. Some products clamp around the inner diameter of a pipe. Typically, band heaters are quipped with ceramic or mineral insulation to reduce heat loss to the environment.

Selecting band heaters requires an analysis of performance specifications and features. Parameters to consider include: maximum operating or sheath temperature, AC voltage required, and watts. Maximum operating temperature is the maximum temperature that the sheath covering the heater may reach. Note that maximum sheath temperature is not the maximum temperature that a heated substance may reach. AC voltage required is the minimum alternating current voltage required for band heater operation.

Important dimensions to consider for band heaters include the inside diameter, width, and thickness of the band. As a rule, the inside diameter of a band heater should be the same size as the outside diameter of the cylinder to be heated. Band heaters use a sleeve, jacket or sheath as a protective outer covering for the heating elements. Choices for sleeve material are aluminum, brass, copper, iron, nickel alloy, steel, and stainless steel. Typically, insulation is used to reduce heat loss to the environment.

Choices include: no insulation, ceramic insulation, mica insulation, mineral insulation, and fiberglass insulation. Mica is valued for its electrical insulating properties and high resistance to heat and acids. Termination type refers to the method used to make electrical connections to the heater. Some band heaters have multiple options for the termination type.

Disk heaters are mainly used in continues sealing applications. Such as in Biscuit packing machines and hydraulic machines. These are known as plate heater also.

We are offering Industrial Heater:

Industrial heaters are used to heat a variety of materials. They are available in many different shapes, sizes, and configurations. There are many different types of industrial heaters. Choices include air heaters, band heaters, coil heaters, cable heaters, cartridge heaters, cast-in heaters. Air heaters are used to heat air. This category includes forced air products and all types of radiant and space heaters. Band heaters are ring-shaped heaters that clamp onto a cylindrical object and heat via conductive heat transfer. Coil heaters and cable heaters are heating elements formed from straight (uncoiled) segments of round or square heating cable. Cartridge heaters are cylindrical heaters that are inserted into a heated substance. Cast-in heaters are made-to-order tubular or wire heaters that are cast into a part. These parts are designed to be an integral component of a larger piece of equipment.

Enclosure heaters are designed for use within enclosures. They prevent freezing and provide protection and humidity control. Flexible heaters can be molded to the shape of a heated object. Forced air use forced convection to move air past a heat source with a fan or blower. Immersion heaters are industrial heaters that are used in applications that require immersing the heater in the substance to heat. Flange and screw-plug varieties are easy to use and quick to install. Other unlisted, specialized, and proprietary types of industrial heaters are also available.

We are offering cartridge heaters are used mainly in immersion applications:

However, due to their compact cylindrical shape, they can also be used in a variety of other applications. Important parameters to consider when specifying cartridge heaters are maximum operating or sheath temperature, AC voltage required, watts and watt density. Maximum operating temperature is the maximum temperature that the sheath covering the cartridge heater may reach. Note that the maximum sheath temperature is not the hottest temperature that a heated substance may reach. AC voltage is the minimum alternating current (AC) volts required to operate the cartridge heater. Watt density is the amount of wattage per square inch that a cartridge heater can deliver. High watt density heaters should not be used with extremely viscous materials, poorly-circulated materials, or explosive/volatile materials due to risk of fire. Important dimensions for cartridge heaters are the nominal diameter and cartridge length or heated length.

Cartridge heaters differ in terms of electrical connectors, termination types, mounting styles, and optional features. Not all heaters have termination angles.

Straight leads or terminals make straight connections with the cartridge heater. In other words, there is no angle. Right angle leads or terminals are angled 90 degrees from the initial connection with the cartridge heater.

Termination type represents the electrical connection options available for cartridge heaters. Most devices can be configured with many different termination options. Choices for termination type include: bare leads, insulated leads, armor cable leads, metal braided leads, flexible conduit leads, screw terminals terminal boxes, quick disconnects and plugs. Cartridge heaters may be mounted or installed using different methods. Some products have multiple mounting options, such as threaded pipe fittings, mounting flanges and locating rings.

Offering Cartridge Heater:

Cartridge heaters are used mainly in immersion applications. However, due to their compact cylindrical shape, they can also be used in a variety of other applications. Important parameters to consider when specifying cartridge heaters are maximum operating or sheath temperature, AC voltage required, watts and watt density. Maximum operating temperature is the maximum temperature that the sheath covering the cartridge heater may reach.

Note that the maximum sheath temperature is not the hottest temperature that a heated substance may reach. AC voltage is the minimum alternating current (AC) volts required to operate the cartridge heater. Watt density is the amount of wattage per square inch that a cartridge heater can deliver. Suppliers calculate watt density by dividing the available wattage by the heated area.