TECHNICO LABORATORY PRODUCTS PVT. LTD.

Thirumudivakkam, Chennai, Tamil Nadu

Techinco Fusion or Crucible furnace is specially designed for top loading of materials under test where the maximum temperature inside the chamber required is of the order of 1350 Deg. C. and above in which samples in small crucibles can be kept for the heating process.

The outer chamber is fabricated out of thick gauge mild steel sheets fully reinforced, with horizontal / vertical angle / channel iron frame make the equipment mechanically very rigid.

The inner chamber is formed by high temperature withstanding Silicon Carbide plates capable of withstanding temp. up to 1400 Deg. C. and having provision for insertion of silicon Carbide plates Rods on both sides horizontally for maintaining uniform temperature of 1350 Deg. C and above.

The furnace will be provided with Top door which can be lifted by means of a paddle and slide out to one side to load and unload the furnace. Precaution will be taken to ensure the smooth operation at elevated temp.

Silicon Carbide rods are suspended in both the sides & bottom of the inner chamber will be used as heating elements to heat the change to temperature of 1350 Deg. C and above. The Silicon carbide rods will be provided with M type clamps or both ends of the furnace and will be inter connected with the aid of aluminum braided wires. The silicon carbide rods possess a unique quality of ageing. To exploit the property of ageing the power to the heating elements will fed through a thriystor power control device for control of power to be silicon carbide rods to ensure long life to the heating elements.

The temperature inside the chamber is indicated and controlled by Digital PID temperature indicator cum controller working in conjuction with Pt /Pt /Rh 13 % to an accuracy of 1 to 2 Deg. C. to exactly know the temperature of the test sample.

A separate compact control panel accommodating the following components will be supplied along with the oven :

• Pilot indicating lights
• HRC fuse unit
• EUROTHERM / SHINKO digital programmable PID temp. indicator cum controller.
• Voltmeter with selector switch.
• Ammeter (AE) 3 Nos.

WORKING CHAMBER SIZE AS REQUIRED.

Technico tubular furnace is supplied in vertical or horizontal model, as per request of customers. Double walled chamber outer chamber made of cold rolled mild steel sheets and finished in powder coating. The inner chamber is formed by high alumina tube capable of withstanding temperature upto 1200C. The tube will have one in closed or both ends opened as per the requirement of customers. Insulation with high density superior quality ceramic fibre blanket.

The furnace is heated by Kanthal A1 heating elements. The temperature is controlled PID, controller working in conjuction with Cr/Al type thermocouple. The size of the tubes is available 50 to 100mm OD and with length of 450mm to 650mm.

Technical Specification:

• Operating temperature range : 600 to 1000C
• Maximum temperature : 1150C
• Temp.Accuracy : +/-1 Deg. C
• Operating Voltage : 230 Volts Single.

Optional Accessories:

• Microprocessor based Digital Programmable controller with Thyristor output for better accuracy of 2 to 3 C
• End fittings for inerr atmosphere purging
• Quartz tube with end fittings

Technico high temperature tubular furnace is supplied in vertical or horizontal model as per the request of the customer.

Double walled chamber, outer chamber made of cold rolled mild steel sheets and finished in powder coating. The inner chamber is formed by high alumina tube capable of withstanding temperature upto 1400 C. The tube will have one end closed or both ends opened as per the requirements of the customers. Insulated with high density superior quality ceramic fibre blanket.

The furnace is heated by silicon carbide heating elements. The temperature is controlled digital PID controller. The sensor will be Pt /Pt /Rh type thermocouple. The size of the tubes is available is 50 to 100 mm OD and with length of 450 mm to 1000mm

Technical Specification:

• operating temperature range : 1350C
• Maximum temperature : 1400C
• Temp.Accuracy : +/-2 to 3 Deg. C
• Operating Voltage : 230 Volts.

Optional Accessories:

• Programmble controller with Thyristor power device
• End fiitings for inner atmosphere purging.
• Imported silicon Carbide Rods.
• End fittings with water cooling jacket.

The general design and construction compraises of a double wallet chamber, outer made of cold rolled mild steel sheets and finished in powder coating paint. Inner chamber formed by high temperature with stand zirconia vaccum board followed by ceramic fibre blankets on the all the sides. Double walled door mounted on heavy duty hinges in the front is provided with effective locking arrangements. Optionally, the door can be provided with door limit switch to cut off the power supply whenever the door is opened and to restart when the door is closed.

The furnace will be heated by means of HIGH QUALITY SILICON CARBIDE RODS. Temperature is mainted and controlled by digital PID temperature controller with SSR output. Alternatively the Micro processor based PID controller Auto tuned with thyristor controlled device working in conjuction with Pt/Pt/Rh 13% thermocouple.

Control panel : A compact control panel accommodating the following will be providing along with the furnace:

• PID/Programme Controller
• Pilot indicating lights
• SSR
• Thyristor Power control device
• Voltmeter- only for PID model
• Ammeter only for PID model
• Main isolating switch

Technical specification:

• Continous operating temperature : 1350 C
• Maximum temperature : 1400C
• Temp.Accuracy : +/-1 %
• Operating Voltage : 230 Volts Single phase 50 cys.

Optional Accessories:

• a. Micro processor based Digital PID Controller with SSR output for better accuracy of 2 to 3 Degs C
• Programmable Controller for Cyclic Program Control
• Thyristor Control Device
• Imported Silicon carbide Heating Elements.

Techinco cupellation furnace is specially designed for front loading of materials under test where the maximum temperature inside the chamber required is of the order of 1200 Deg.C.

The inner chamber is formed by high temperature with standing sillimanite refactory capable of withstanding temp. Up to 1200 Deg.C. and having provision for insertion of silicon carbide Rods are provided on two sides or above and bottom of the furnace for maintaining uniform temperature of 1200 Deg.C.

The inner chamber will be lined Silicon Carbide plate in all the sides to protect the heating element for oxidation effect and to increase the life the elements. The chamber has provision to insert thermocouple for control of process temperature. The thermocouple will be pt / pt 13% Rh.

The inter space between the inner and outer chamber will be tightly packed with high density ceramic fiber mats to totally eliminate the radiation heat loss.

The furnace will be provided with a front opening door. The door opening can vertical with counter weight or horizontal with center pivot such that the hot face of the door will not face the operator. The door will have a observation hole. The door will be provided with a positive break safety switch to isolate the power line when the door is open.

The Heating is by Silicon Carbide Rods which are suspended in both the sides of the inner chamber will be used as heating elements to heat the change to temperature of 1200 Deg. C. The Silion carbide rods possess a unique quality of ageing.

To exploit the property of ageing, the power to the heating elements will be fed through a Thyristor Power control device for control of power to be silicon carbide rods to ensure long life to the heatings.

Suitable air inlet is provided in such a way that the fresh air is drawn from rear and will get preheated when they travel through the heating element and will enter the chamber thro the front. An adjustable air valve is provided to adjust the air flow. Suitable Exhaust with chimney is provided. For removal of any fumes. However the extraction system and lead filter will not be in our scope.

A compact control panel accommodating the following components will be supplied along with the oven.

• Pilot indicating lights
• HRC fuse unit (L&T)
• Euro herm digital programmable PID temp. indicator cum controller with thyristor control device.
• Voltmeter with selector switch.
• Ammeter (AE)

WORKING CHAMBER SIZE AS REQUIRED.