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PRODUCTS

ROLLS DIVISION

ALLOY STEEL BASE ADAMITE ROLLS

Microstructure of Alloy cast steel rolls
Distance from surface - mm
Hardness - ShC

CHARACTERISTICS

Alloy Steel Base Adamite Rolls are Hyper-eutectoid Steel alloyed with Nickel, Chromium and Molybdenum with higher Carbon content, ranging from 0.80% to 2.00%. Vanadium is also added to achieve the desired microstructure. It has higher mechanical strength and thermal/wear resistance. The rolls undergo a multi-stage, high temperature heat treatment cycle which consists of Normalizing/Hardening followed by a tempering cycle. This gives the rolls a combination of hardness, toughness and wear resistance required for a particular application. The microstructure consists of a fine pearlitic matrix with spheroidized carbide.

SUPPLY CONDITIONS

  • CO2 PROCESS
  • PROOF MACHINED
  • FINAL SIZE MACHINED/ BEARING SIZE
  • HEAT TREATMENT
  • GRADE CONFIRMATION THROUGH SPECTROMETER AND UTM MACHINE

CHEMICAL COMPOSITION

HARDNESS C MN SI NI CR MO UTS
KGF/MM.SQ
40-45 1.20/1.40 0.60/0.90 0.30/0.60 0.60/MAX 0.80/1.00 0.25/0.35 55-75
45-50 1.40/1.60 0.60/0.90 0.30/0.60 0.60/MAX 1.00/1.20 0.30/0.40 55-75
50-55 1.50/1.90 0.60/0.90 0.30/0.60 0.80/1.40 1.10/1.30 0.35/0.50 60-75

APPLICATIONS

These rolls are suitable for Roughing, Intermediate and Finishing stands for Section and Structural Mills. Applications include Heavy Section and Rail Mills, Universal Beam Mills, TMT Bar Mills, Medium Section Mills and Billet Mills

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