Testing Equipment

This standard covers the procedure for determination of content of diffusible hydrogen in deposited weld metal  arising from the use of  Shielded Metal Arc Electrodes,  Gas Metal Arc,  Flux cored Arc , Submerged Arc and MIG wire  Welding  Process by Mercury  method.  

This standard covers the procedure for determination of content of diffusible hydrogen in deposited weld metal  arising from the use of  Shielded Metal Arc Electrodes,  Gas Metal Arc,  Flux cored Arc , Submerged Arc and MIG wire  Welding  Process by Mercury  method.  

IS : 11802-1986 (Reaffirmed 2003)

Product Details :

• Having insulated chamber for Temperature  & Humidity with humidifier.
• Timer 
• Digitally controlled. 
• Humidity is created by steam injection method
• Which creates a mist of aerosol particles which remains suspended In the chamber. Outer Body Powder Coated.

Product Details :

• Rigid and stable body fitted trinocular observation tube, inclined at 45*. 
• Bright field, incident light through epi-illuminator with centering provision,
• Iris diaphragm and a slot for dropping filters. It is having precise Quadruple
• Revolving nose piece with positive click stop Co-axial mechanical stage of X-Y 
• Movement of specimens up to  thickness 65 mm. Built-in base transformer. 
• Halogen Bulb 6V 20W controlled by a variable intensity control knob. Supplied 
• With daylight bulb and green filters in metal mount, a spare bulb, operating 
• Manual and vinyl cover in a sturdy plywood storing cabinet with following 

Optical combination : 

Achromatic Objectives : M4x, M10x, M40x.

Eyepiece : WF 10x & 15x (paired)

MOISTURE TESTING APPARATUS :

• The moisture content of the covering on the Low Hydrogen electrodes shall be determined as per the procedure laid down in SFA-5.1. The apparatus consist of the following :
• Combustion Tube Furnace with heating element to 2000*F (1093*C.)
• An Oxygen purifying train consist of a needle valve, a flow meter, a 96% sulfuric acid wash bottle. A spray trap. And an anhydrous magnesium perchlorate drying tower.
• A fused silica combustion tube and plug of glass wool filter.
• A water absorption train consist of a U- Tube filled with anhydrous magnesium perchlorate and a concentrated sulfuric acid gas-sealing bottle.

Smoke Level Measurement Apparatus is designed and developed as per ANSI/AWS F1.2-92 for measuring Fume Generation Rate and total Fume Emission of welding and allied process.

Fume generation rate depends upon ingredients used in electrode coating, Moisture contents, core wire material, parent material, process and operating conditions during the welding and allied process.

Depend upon the fume generation rate it is useful to provide adequate ventilation, process selections, reformulate the ingredients of electrode and air filtering requirements.

ADVANTAGES :

• Quickly detect fume emission rate of various welding consumables.

• Normal complain by welders at shop floor can be satisfied by Quantitatively measuring of smoke emission rate.

• Regular testing of smoke emission will help in controlling the quality of the product.

• it will help in R& D to develop electrode with low smoke emission rate.

The Super Magnifying Eccentricity Tester is specially designed for testing eccentricity of welding electrodes. It gives Microscopic magnifying image of eccentricity of the electrode coating from a side of the electrode by 30 X or 40 X. Break the electrodes on the fixer and put it on the guiding Gauge and Rotate the electrode for checking the eccentricity.  The apparatus is very Compact, easy to operate and highly precision.

STAGE :Working Stage  115 X115 mm with graduated Detachable Mechanical Stage for convenient adjustment of slide manipulation up to 40 X 75 mm.

FOCUSSING :Separate knobs are provided for coarse and fine focusing. Coarse adjustment can be made through rack-pinion & fine movement by screw-lever mechanism.

ILLUMINATION : 20w Halogen Bulb is provided with solid state variable light control knob, for adjusting the intensity of light, alongwith ON /OFF Switch. The Transformer is built in the base operates on 220 V/ 110V.

SCREEN :150mm diameter round Glass  Projection  Screen is provided for relaxed fatigue-free viewing over long period, can be rotated through 360* on microscope tube.