The quality of high-carbon ferrochrome is uneven in the market. Internal problems cannot be found by just looking at them, so sampling and testing must be carried out to ensure quality.
Large batch verification sampling: When the batch size is less than 10 tons, no less than 10 small samples should be randomly taken from different parts;
When the batch size is more than 10 tons and less than 30 tons, no less than 20 small samples should be randomly taken from different parts;
When the batch size is more than 30 tons, no less than 30 small samples should be taken randomly from different parts. The weight of each sample should be approximately equal, and its block size should be no less than 20*20mm. The total amount of samples taken should not be less than 0.03% of the batch. All the small samples taken should be crushed to less than 10mm, divided into 1-2kg using the quartering method, mixed and divided into two equal parts, one part for analysis and one part for retention.
High carbon ferrochrome is an important raw material for the production of stainless steel. To ensure the quality of the purchased material, sampling and testing are the method of identification.
