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High Carbon Ferrochrome

High Carbon Ferrochrome



Highlights


  • 1. Provides for wide usage in foundry and steel industry applications
  • 2. Made available with optimum chemical and physical properties
  • 3. Finding usage during steel production for correcting chrome percentage without causing undesirable variation in carbon/trace element percentage
  • 4. Also suitable as low cost alternative to metallic chrome for use in super alloys as well as other special melting applications

Abstract


During solid-phase decarburization, the changes of the electromagnetic properties can reflect the variation degree of material components. High-carbon ferrochrome powders (HCFCP) with addition of CaCO3 were decarburized in solid phase by microwave heating and the electromagnetic properties of the decarburized materials were investigated. With increasing in heating temperature from 1173 to 1473 K, the relative permittivity of the decarburized materials increases initially and then decreases, whereas the relative permeability exhibits an opposite change trend. As holding time ranges from 40 to 60 min at 1273 K, the relative permittivity and dielectric loss factor tend to decrease while the relative permeability and magnetic loss factor tend to increase, corresponding to the maximum mean velocity of decarburization. In microwave fields, electromagnetic properties of the decarburized materials principally vary with carbon content, C-vacancies and crystal structure, and their changes in turn affect the interaction of microwaves with the decarburized materials.


Overview :


Ferrochrome (FeCr) is an alloy of chromium and iron containing between 50% and 70% chromium. The Producer od stainless steel & tool steel are the largest consumer of ferrochrome and charge chrome. It is chromium that confers upon stainless steel its remarkable corrosion resistance.

Out of the total world chrome ore output about 95% is used to produce ferrochrome for the metallurgical industry, with 2% used in chemical industry and the balance 3% in the refractory and foundry industry. Later majority of which is used in Cast Iron, Alloy Steels & Stainless Steel.

Image
Grade C max, % Cr min, % P max, % S max, % Si max, % Slag, %
600 6.0 66.0 0.03 0.05 1.00 0.05
650 7.0 66.0 0.03 0.05 1.00 0.05
800 8.0 66.0 0.03 0.05 1.00 0.05
850 8.50 66.0 0.03 0.05 1.00 0.05
900 9.0 66.0 0.03 0.05 1.00 0.05
LP 8.0 66.0 0.02 0.05 1.00 0.05
ULP 8.0 66.0 0.015 0.05 1.00 0.05
SULP 8.0 66.0 0.012 0.05 1.00 0.05
SSULP 8.0 66.0 0.001 0.05 1.00 0.05
Chips 9.0 66.0 0.03 0.05 1.00 0.05
Fines 9.0 66.0 0.03 0.05 1.00 0.05


Available Sizing

Sizing 10-50 10-80 10-150 50-150