High-carbon ferrochrome（High- Carbon FeCr）, said big eyes chromium. Ferrochrome production of stainless steel is the most important raw materials, mainly used in the production of stainless steel, ball bearing steel, tool steel, nitriding steel, heat resistant steel, quenched and tempered steel, hardened steel and hydrogen resistant steel, which is due to chromium in stainless steel the decisive role in determining the elements of stainless steel sex is only one, which is chrome, stainless steel are sure each contain a certain amount of chromium. The corrosion resistance of stainless steel mainly from chromium. Experiments show that only chromium content exceeding 12% of the steel corrosion resistance will be greatly improved, so the amount of chromium in stainless steel generally not less than 12%. So chromite and stainless steel market supply and demand situation is closely related to the supply and demand situation.
Physical properties: ferrochrome should in blocks, each weighing no more than 15kg, size of less than 20 × 20mm chrome block weight does not exceed 5% of the total weight of ferrochrome. The demand side, there are special requirements for size, to be agreed by both parties. Ferrochrome internal and surface shall be visually apparent non-metallic inclusions, but the ingot surface coating without a net, allowing a small amount of its existence.
Sampling was conducted by: piles of verification sampling: Batch when less than 10 tons, should be taken in different parts of a random sample of not less than 10 hours; batch of 10 tons or more, less than 30 tons, the different parts should be taken at least 20 small random sample; batch of 30 tons or more, should be taken at least 30 different parts of a small random sample. Each sample weight should be approximately equal, the block is not less than 20 * 20mm. The total sample volume should be no less than 0.03%. Sample should be taken from all crushed to 10mm or less, with a reduction of quartering to 1-2kg, mixed and divided into two equal parts, one sample preparation for analysis, a retained sample.
The main purposes: as a ball high carbon steel, tool steel and high speed steel alloying agent to improve the hardenability of steel, increasing the wear resistance and hardness; cast as an additive to improve the wear resistance of cast iron and improve the hardness, while making cast iron has good heat resistance; no residue method for producing silicon-chromium alloy and in the low, low carbon ferrochrome chromium-containing materials; production of electrolytic chromium as chromium-containing materials; using for oxygen smelting of stainless steel raw materials.
More about:High- Carbon FeCr prices
From:Metal materials
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