Analysis of inter-laboratory comparison results for refractory material testing
The physical performance testing of refractory materials lacks a unified standard material,resulting in the inability of laboratories to grasp the accuracy of the results.This inter-laboratory comparison was conducted in the Yangquan area,with a total of 9 laboratories participating and a relatively small number of participants.In the absence of standard material and with a small number of participants,high alumina bricks were used as comparison samples.Four comparison items were set up,including apparent porosity,refractoriness-under-load,A12O3 and Fe2O3.The Z-score and measurement error methods were used to compare and evaluate the results.The reasons for the problems and unsatisfactory results of each comparison item were analyzed,and the advantages and disadvantages of the two evaluation methods and judgment criteria were com-pared,effectively verifying the feasibility and reliability of the inter-laboratory comparison method in refractory material test-ing.
万方数据
维普
