Karma Steels is leading & trusted Tension Pin manufacturer, supplier & exporter in Mumbai.
Tension Pin is first Upset forged from round bar to form a bulb equivalent to the wt. of 'T' head.
The 'T' head is then drop forged to form the head portion. The next process is Annealing and Proof Machining followed by Quenching & Tempering in a "Salt Bath" furnace. After heat - treatment it is finish machined to size. Threads are formed by "Thread Rolling" process (M42 X 4.5P) and checked by Go / NoGo ring gauges.
Finally Magnetic Particle Testig carried out.
Upsetted & Drop Forged
Material: 42CrMo4 (Heat Treated)
Construction: Drop Forged,
Quenched & Tempered to 260 - 295 BHN
Thread Size: M42 X 4.5 Pitch
Charpy V-notch impact tested
[minm. 27 Joules @ - 18°C]
Tensile Strength → 120 KSi [827 MPa] minm.