PHOENIX TECHNOVATION C-6, T-204 PAVANA INDUSTRIAL COMPLEX, MIDC BHOSARI, PUNE -26 Email: phoenixtechnovation@gmail.com Specialized in Cryogenic treatment
Types of Subzero treatment Shallow subzero treatment (SST) minus 80 degree C Deep Subzero treatment (DST) minus -80 to minus -150 degree C Cryogenic treatment (CT) minus 150 to minus 196 degree C
CRYOGENICS DEALS WITH EFFECT OF LOW TEMPERATURE ON MATERIALS CRYOGENICS STARTS WHERE THE REFRIGERATION ENDS PROCESSING TEMPERATURE IS BELOW -150 C IT S AN ADD-ON PROCESS TO CONVENTIONAL HEAT TREATMENT
SCOPE Cutting tools: cutters, knives, blades, drill bits, end mills, turning or milling inserts. There are two main types of cryogenic treatments of cutting tools. Forming tools: roll form dies, progressive dies, stamping dies. Mechanical industry: pumps, motors, nuts, bolts, washers. Medical: tooling, scalpels. Motorsports and Fleet Vehicles: brake rotors and other automotive components. Musical: Vacuum tubes, brass instruments, guitar strings and fret wire, piano wire, amplifiers, cables, connectors. Sports: Firearms, knives, fishing equipment, auto racing, tennis rackets, golf clubs, mountain climbing gear, archery, skiing, aircraft parts, high pressure lines, bicycles, motor cycles. Aerospace & Defense: communication, optical housings, weapons platforms, guidance systems, landing systems. Automotive: brake rotors, transmissions, clutches, brake parts, rods, crank shafts, camshafts axles, bearings, ring and pinion, heads, valve trains, differentials, springs, nuts, bolts, washers.
CRYOGENIC TREATMENT PROCESS Hardening Tempering
SET-UP FOR CRYOGENIC TREATMENT
WHY CRYOGENIC TREATMENT? RETAINED AUSTENITE IS A MAJOR ISSUE IN HARDENED AND TEMPERED STEELS RETAINED AUSTENITE DECREASES HARDNESS AND AFFECTS DIMENSIONAL STABILITY CRYOGENIC TREATMENT FACILITATES CONVERSION OF RETAINED AUSTENITE INTO MARTENSITE
WHY CRYOGENIC TREATMENT? ENHANCES PRECIPITATIONOF FINE TERTIARY CARBIDES IN STEELS INCREASES HARDNESS REDUCES SURFACE ROUGHNESS IMPROVEMENT IN WEAR RESISTANCE INCREASES FATIGUE LIFE OF THE COMPONENTS BETTER FRACTURE TOUGHNESS CHARACTERISTICS
EFFECT OF CRYOGENIC TREATMENT INCREASED CARBIDE DENSITY REDUCED SURFACE ROUGHNESS
EFFECT OF CRYOGENIC TREATMENT Surface Roughness, micron 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 Hardness Rc 56 55 54 53 52 51 50 49 48 47 Without Cryo With Cryo Without Cryo With Cryo 800 0.0025 Fatigue strength, MPa 700 600 500 400 300 200 100 0 Wear rate mm 3 /m 0.002 0.0015 0.001 0.0005 0 Without Cryo With Cryo Without Cryo With Cryo
CRYOGENIC TREATMENT: ADVANTAGES IMPROVEMENT IN MECHANICAL PROPERTIES INCREASED TOOLAND DIELIFE REDUCTION IN PREMATURE FAILURES OF THE COMPONENTS REDUCTION IN THE COSTOF REPLACEMENT OF TOOLS AND DIES PROCESS COULD BE CARRIED OUT AFTER CHEMICAL HEAT TREATMENT SUCH AS NITRIDING REDUCES VIBRATION OF THE SYSTEM
CRYOGENIC TREATMENT:APPLICATIONS CUTTING TOOLS DIE STEELS PRESS TOOLS HIGH PRECISION PARTS
Suggestions to end users Any deviation in Hardened and Tempered heat treatment condition of the steel, it is likely to respond poorly to cryogenic treatment and hence its resultant properties. So USER must ensure that prior treatment MUST be as per SOP of that steels to derive full benefit of Cryogenic treatment.