Nisha Engineers, India

Cast Trays (Ct-02)

Heat Resistant Hardware (Hrh-02)

Heat Resistant Hardware (Hrh-03)

Range of Retorts, Retorts Lids, Diffuser Base, Muffles, Shaker Hearth Plates, Retorts for Endo Gas Generators etc. are offered in range of material specification including AISI 310, Incoloy, etc., whereas cast Diffuser Base and Shaker Hearth Plates are offered in HK, HT and HU grade alloys.

As per our standard practice, all weld joints of Muffles, Retort & Lids etc. are 100% subjected to ultrasonic weld check. Water cooling jackets are hydraulically tested for trouble free operations. Retort lids are also offered in ready to use condition complete with Bearing housing, fan shaft assembly as well as electric motor.

Shaker Hearth Plates are offered in single piece as well as in composite design using casting as well as wrought alloy using state of the art joining process.

Refurbishing work on such spares is also undertaken for maximum process economy. Our engineers are specialists in conserving and salvaging your old furnace spares.

Retorts, Retort Lids & Muffles (Rrlm-02)

Retorts, Retort Lids & Muffles (Rrlm-03)

Unique Serpentine design allows ample scope for expansion and contraction during heating and quenching cycles, thereby assisting in resisting deformation to a great extent. It can take very heavy loads too; reduce dead load on the furnace and allow for better output of furnace.

Serpentine Trays (St-02)

Baskets for normalizing / annealing are offered in variety of alloys including HH, HK and HN alloys. Baskets for heat treatment of smaller components can be supplied with heat resistant wire mesh liner. Heavy duty hybrid design with cast bottoms can take massive loads without deformation, resulting in a much longer life

Baskets with maximum openings as well as baskets with Rail Track are also available for Sealed Quench, Continuous and Pusher type furnaces and offered in range of designs and sizes.

Built to accommodate larger and heavier furnace loads for better stacking, better inter locking & less distortion, thereby resulting in a much longer life. These baskets are suitable for all furnace sizes. These new designs add strength to side walls, transferring load to base tray..thereby reducing deformation.

The Next-Gen Baskets for Pit type furnaces are rugged in design but with minimum dead load on the furnace. These can be supplied with / without wire mesh inner lining. Matching wire mesh / expanded metal separators can also be supplied in any shape and size to suit customers’ requirements.

Next Gen Baskets (Ngb-02)

Hanging baskets for Fluidized-Bed furnace or Salt Bath furnaces offer maximum open space, and maximum furnace output by reducing dead load on furnace. Similarly, rod baskets with central support give a long and trouble free operation and minimum distortion at elevated temperatures.

We fabricate baskets and fixtures as per customers’ requirements, be it component specific or furnace specific, we do it all ! Baskets with expanded metal mesh or wire mesh with matching Mesh Separators for heat treatment of small components can also be supplied.

Tailor Made Baskets (Tmb-02)

We offer Investment Castings in high Ni/Cr alloys. This process is capable of producing precise detail and dimensional accuracies in parts weighing from few grams to many kilo grams.

This process reduces and often eliminates need for machining. Our precise dimensional control allows castings to be used with little or no machining. Limitations in green sand moulding process of higher section thickness can also be overcome using this process. This not only reduces the casting cost, but also helps in reducing dead load on the furnace thereby increasing productivity.

It also saves on cost and time as it needs no welding assembling or finishing work. It produces surface finish that can not be obtained by machining or sanding. Design flexibility in Investment castings can not be found in other metal casting methods.

Typical uses of Investment Castings for heat treatment include Corner Posts, Loading Beams of thinner cross sections, Centre Pins, Cast links for Conveyors, Heating Element Holders, threaded Nuts, Washer type Spacers etc..

Investment Castings (Ic-02)

Corrugated baskets for Pit type, Batch type or Continuous furnaces fabricated from high Ni/Cr alloy steels including AISI 310, Inconel and Incoloy are offered as per customers’ requirements. Corrugations offer additional strength to these Baskets. Riveted joints and unique lifting & locking mechanism of baskets for Pit type furnaces offer excellent resistance to deformation and an extended life of the basket’s manifold. These baskets generally come with a replaceable cast base for longer life.

Corrugated Boxes & Baskets (Cbb-02)

Requirement of heat resistant hardware is sometimes a major hurdle in maintaining furnace or furnace fixtures.

We offer range of heat resistant hardware such as Nuts, Bolts, Washers, Anchors, Chain, Rivets etc. made from high Ni/Cr alloys such as AISI 304, 316, 310, Inconel, Incoloy etc.

Wire Meshes in almost any shape & size are offered in various heat resistant alloys. For bottom mesh on base trays, suitable reinforced openings can also be provided for inserting Corner Posts etc.

Heavy duty Expanded Mesh can be offered which can take heavy load without increasing much dead load on furnace thereby increasing productivity.

Mesh belts made from high Ni/Cr alloys such as AISI 310, 314, Inconel, Incoloy etc. are offered in a range of specifications with or without side guards. Edge welding is done using flux free Argon Arc welding process for optimum performance.

Furnace Fans & Impellers (Ffi-03)