Sampling and composition detection method in the casting operation

The present invention discloses a sampling and composition detection method in the casting operation. Step 1. pretreatment; step 2. temperature measurement; step 3. sampling; step 4. spectral analysis; step 5. chemical analysis; In step 1, a plurality of sample molds are taken out, and the sample molds are numbered, interior of the sample molds is cleaned, agglomerates adhered to the inner wall ofthe sample molds are removed, and the interior of the sample molds is sprayed with appropriate refractory paint and bottom of the sample molds is evenly coated with mold powder, then the sample moldsare oven-dried and preheated to 300 degree Celsius, and the prepared sample molds are placed flat on top of a cooling device. By spraying refractory paint inside the sample moulds and coating mold powder evenly on bottom of the sample moulds, the method effectively prevents the adhesion between sample blocks and the bottom of the sample moulds, facilitates the staff to take out the sample blocks,and to spray covering agen