Method for testing breaking strength of stuffing sand

• Main Authors: GUO DONGHUI, DENG HUI, LI LINJIE, GAO JINXING, MENG DEKANG, SHANG HUIQI, QIAO JICAI, ZHOU GAOFENG, LIU YONGQIANG
• Format: Patent
• Language: Chinese; English
• Published: 07.03.2023
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention discloses a method for testing the breaking strength of stuffing sand. The method comprises the following steps: a, preparing a breaking test sample; b, placing the sample on test equipment to carry out a bending test; and c, measuring a corresponding force value and drawing a mechanical curve. The step a for preparing the fracture-resistant experimental sample specifically comprises the following steps: a1, brushing a high-temperature-resistant coating on a mold; a2, enabling the stuffing sand sample to naturally flow and fill the mold, and hanging the surface to be flat by using a steel ruler; a3, the mold and the stuffing sand are put into a high-temperature furnace to be sintered; a4, cooling to room temperature after sintering is finished; a5, demolding the stuffing sand sample; when the method for testing the breaking strength of the stuffing sand is used, the stuffing sand can be sintered into a regular shape in a mold under the condition that the original shape of the stuffing sand is no