Kannu International

 THE TERM QUENCHING NORMALLY REFERS TO THE CONTROLLED COOLING OF STEEL COMPONENTS IN A FLUID TO GIVE SPECIFIED PROPETIES. THE HARDNESS AND THE OTHER PHYSICAL PROPERTIES OBTAINED DEPEND UP ON THE COMPOSITION OF THE STEEL, THE DIMENSION OF THE COMPONENT, THE TIME AND TEMPARATURE OF THE HEAT TREATMENT AND THE SPEED AND DURATION OF THE QUENCHING PROCESS. A NUMBER OF QUENCHING MEDIUMS SUCH AS MOLTEN SALTS, BRINE SOLUTIONS AND SYNTHETIC QUENCHANTS CAB BE USED, BUT PETROLEUM BASED QUENCHING MEDIA FIND THE WIDEST APPLICATION DUE TO THE FOLLOWING ADVANTAGE.-THEY ARE EASIER TO CONTROL AND GIVE UNIFORM HARDNESS.-SUITABLE FOR LARGE SCALE AUTOMATION -THESE ARE NON-CORROSIVE AND NON –TOXIC. METAQUENCH GRADES HAVE BEEN SPECIALLY FORMULATED FROM HIGHLY REFINED PETROLEUM OILS WITH ADDITIVES AND HAVE THE FOLLOWING CHARACTERISTICS.-GOOD THERMAL PRPORTIES -GOOD CHEMICAL AND OXIDATION STABILITY -HIGH BOILING POINTS AND LOW VOLATILITY -HIGH FLASH AND FIRE POINTS METAQUENCH 39,40 THESE ARE BLENDS OF REFINED BASE OILS AND CONTAIN NO ADDITIVES. METAQUENCH 39 IS RECOMANDED FOR GENERAL PURPOSE QUENCHING OF COMPONENTS AND IS CONT…
PARTICULARLY SUITABLE FOR QUENCHING OF CYANDIED PARTS. METAQUENCH 40 IS SUITABLE IN SITUATIONS WHERE LOWER QUENCHING SPEED IS DESIRED. THESE MEET THE REQUIREMENT OF IS:2664-1980( RE-AFFRMEND IN 1987) STRAIGHT MINERAL TYPE GRADE MEDIUM AND HEAVY RESPECTIVELY. METAQUENCH 42 THIS IS A BLEND OF REFINED PETROLEUM OILS AND HIGH QUALITY FATTY OILS. IT HAS GOOD WETTING CHARACTERISTICS AND HAS A HIGHER QUENCHING SPEED COMPARED TO METAQUENCH 39 AND METAQUENCH 40 RECOMANDED FRO GENERAL PURPOSE QUENCHING OPERATION BUT IS NOT SUITABLE FOR QUENCHING OF CYANIDED PARTS. IT MEETS THE REQUIREMENT OF IS:2664 1980 ( RE-AFFIRMED IN 1987) COMPOUNDED TYPE. METAQUENCH 43 IT IS AN ADDITIVE TYPE OF QUENCHING OIL WITH GOOD DISPERSING CHARACTERISTICS AND HAS EXCELLENT HEAT TRANSFER PROPETIES. THE CAREFULLY SELECTED ADDITIVE INCORPORATED IN THE OIL CONTROLS SOILING OF METALIC PARTS DURING QUENCHING BY PREVENTING DIRT FROM ACCUMULATING ON THE METAL AND THERE BY ENSURES UNIFORMS HARDNESS WITH MINIMUM QUENCH DISTRITION. IT MEETS THE REQUIREMENTS OF IS:2664-1980, ( RE-AFFIRMED IN 1987) ADDITIVE TYPE. CONT…