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Batch Heat Treatment Furnaces

Batch Heat Treatment Furnaces

Batch Heat Treatment Furnaces

Product catalog summary
Overview
This document provides detailed specifications and features of various batch heat treatment furnaces offered by Carbolite. These furnaces are designed for a range of industrial heat treatment processes, ensuring precise temperature control and safety.

General Purpose Chamber Furnaces
These furnaces feature low thermal mass insulation and resistance wire elements for rapid heating. They are available in different sizes, with elements supported on ceramic tubes in larger models. The design includes a hard-wearing hearth and a vertically opening insulated door for operator safety. Models can reach up to 1300°C.

Air Recirculating Furnaces
The HRF range is suitable for low-temperature processes like stress relieving and annealing, with a maximum temperature of 750°C. They feature stainless steel inner chambers, zinc-coated outer cases, and a powerful fan system for uniform temperature distribution.

Large Chamber Furnaces
These furnaces are designed for applications requiring precise temperature control, with models available at 1200°C and 1400°C. They feature heavy gauge elements, low thermal mass insulation, and silicon carbide tiles for durability. Safety features include a manually operated sliding door and optional pneumatic or electric doors.

Protective Atmosphere Retorts
Carbolite offers retorts for processes requiring inert or reducing atmospheres. These can be custom-built and are designed for loading outside the furnace chamber. They ensure reliable and consistent treatment.

Top Hat Furnaces
These furnaces combine a fixed hearth with a movable heating chamber, providing excellent temperature uniformity. They are suitable for processes under protective atmospheres and offer easy maintenance and element replacement.

Heating Elements and Insulation
Furnaces use resistance wire, silicon carbide, or Super Kanthal elements depending on the temperature requirements. Insulation combines low thermal mass materials with hard-wearing refractories.

Controls and Accessories
A range of temperature controllers and programmers are available, including the Carbolite 201 and Eurotherm models. Additional options include overtemperature protection, three-zone control, and various temperature monitoring tools.

Conclusion
Carbolite furnaces are designed for a wide range of industrial applications, offering precise temperature control, safety features, and customizable options to meet specific process requirements.
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Catalog excerpts

Batch Heat Treatment Furnaces -1

R BATCH HEAT TREATMENT furnaces c o m p l e t e t e m p e r a t u r e C O N T R O L

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Batch Heat Treatment Furnaces -2

GENERAL PURPOSE CHAMBER FURNACES The combination of low thermal mass insulation and free radiating resistance wire elements ensures that maximum temperature is reached quickly. In the 36 and 65 litre versions, the elements are supported in carriers along the side-walls of the furnace, whilst in the larger 131 and 200 litre versions, they are supported on ceramic tubes mounted along both the side walls and the roof. BATCH HEAT TREATMENT FURNACES Elements are not located in the hearth where they may be damaged from spillage. A hard-wearing hearth is fitted as standard, making the furnace durable...

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Batch Heat Treatment Furnaces -3

BATCH HEAT TREATMENT FURNACES AIR RECIRULCATING FURNACES The HRF range of horizontal chamber furnaces is available with a maximum operating temperature of 750oC and is particularly suitable for stress relieving, tempering, normalising, annealing and other low temperature heat treatment processes. They feature an easy clean, stainless steel inner chamber and a zinc coated outer case, finished with a hardwearing stoved epoxy polyester coating. The double skin construction ensures a cool, safe outer case temperature. Heating is provided by resistance wire elements on both sides of the chamber.A...

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Batch Heat Treatment Furnaces -4

c o m p l e t e t e m p e BATCH HEAT TREATMENT FURNACES LARGE CHAMBER FURNACES These large capacity furnaces are suited for applications where good temperature uniformity and close temperature control are required. They are constructed from rectangular hollow section panelled with zinc coated steel sheets. The double skin construction ensures a cool, safe outer case temperature. Models at 1200oC are heated by heavy gauge spirally wound elements located in the roof and under the hearth. Versions at 1400oC have silicon carbide elements located in the same positions. Low thermal mass insulation...

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Batch Heat Treatment Furnaces -5

r a t u r e C O N T R O L BATCH HEAT TREATMENT FURNACES PROTECTIVE ATMOSPHERE RETORTS Carbolite offers a range of furnace retorts to meet the demand for specialist heat treatment processes involving the use of inert or reducing atmospheres.The retorts provide maximum reliability and consistency of treatment. and provision is made for gas inlet/outlet. The retorts detailed can be supplied in a variety of sizes and may be fitted retrospectively to most Carbolite furnaces. In addition to the standard range of retorts, custom built versions can be manufactured for most research, quality control and...

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Batch Heat Treatment Furnaces -6

• Silicon carbide hearths and roofs - the furnace work chamber hearth and roof can be lined with silicon carbide tiles to protect the elements from damage from aggressive compounds or corrosive fumes and to provide a hardwearing surface • Temperature controllers and programmers - to achieve consistently high quality results, furnace temperatures must be uniform and accurately controlled. Carbolite’s furnaces are available with a wide range of temperature controllers and programmers, carefully selected for maximum reliability and performance The Carbolite 201 controller is a three term PID microprocessor...

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Batch Heat Treatment Furnaces -7

TOP HAT FURNACES The principle of a top hat furnace is the combination of a fixed hearth and a moveable heating chamber. The heating chamber, which has elements on four sides, is raised to expose the hearth and the working volume of the chamber. Product can be loaded onto the hearth either manually or by a charging machine. The chamber is then lowered down over the product and forms an insulating seal with the refractory hearth. The controls are usually housed in a free standing control module with flexible cabling to the furnace. Benefits of this design: • Excellent temperature uniformity due...

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Batch Heat Treatment Furnaces -8

Carbolite Parsons Lane, Hope, Hope Valley S33 6RB, England Tel: 01433 620011 Fax: 01433 621198 e-mail: [email protected] www.carbolite.com R c o m p l e t e t e m p e r a t u r e C O N T R O L BATCH HEAT TREATMENT FURNACES Designed & Printed By The Peak Press Company Heating elements Up to 1200°C: resistance wire spirally wound on ceramic tubes, which are positioned horizontally on 4 sides of the chamber; Up to 1600°C: silicon carbide elements, positioned on 4 sides of the chamber, either horizontally or vertically supported from above (depending on the design); Up to 1800°C: Super Kanthal elements...

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.