21Mar
21Mar
After metallographic grinding, there are several polishing methods
After grinding, the metallographic specimen needs to be polished to remove the abrasion marks and deformation layers generated by the grinding process on the specimen, so that it becomes a smooth mirror. At present, the methods of polishing samples include mechanical polishing, electrolytic polishing, chemical polishing and composite polishing. 1.Mechanical polishing: polishing in a special polishing machine. Mechanical polishing is mainly divided into two steps: rough polishing and fine polishing. Rough polishing: The purpose is to remove the polished deformed layer. In... 20Mar
Rockwell hardness tester in the use of the process encountered failure has how to solve
Rockwell hardness tester is suitable for metal Rockwell hardness test. This test method is characterized by measuring the indentation depth and reading the hardness value of the sample directly on the dial or digital display screen of the hardness tester, which is convenient, simple, rapid and high efficiency. Small indentation, small damage on the working surface of the parts, suitable for batch parts testing; Rockwell hardness test has a wide range. Because the hardness tester is affected by external and... 20Mar
The operation of the tensile testing machine should not be sloppy at all
Tensile testing machine is used to carry out static load, tensile, compression, bending, shearing, stripping and other mechanical properties of the material with mechanical testing machine, suitable for plastic sheet, pipe, profile, plastic film and rubber, wire and cable materials of various physical and mechanical properties testing for material development. Tensile testing machine operating procedures: 1. Preparation of the specimen: The tensile testing machine takes the mark distance in the middle of the specimen or uses the foot mark gauge at... 19Mar
Look at this! TABER wear testing machine maintenance procedures
TABER abrasion testing machine since its introduction. This precision instrument is widely used for accelerated wear testing, providing reliable material wear test data in minutes. Widely used in plastic, paint, laminate, leather, paper, ceramic, carpet, glass and other materials wear test. TABER wear testing machine is suitable for wear resistance test of leather, cloth, paint, paper, floor tile, plywood, glass, natural rubber, etc. The method is to cut the specimen with a standard cutter, wear it with a specified type... 19Mar
Experience to share TABER wear testing machine calibration method Quick look
TABER abrasion testing machine is suitable for leather, cloth, paper, paint, plywood, leather, floor tile, glass, natural plastic and so on. The test method is that a pair of grinding wheels are mounted on the rotating sample, and the specified load is applied. When the sample rotates, the grinding wheel is driven, so as to wear the sample, and the weight loss is the weight difference before and after the test. The abrasion tester produced by Taber is the... 18Mar
Ten minutes to read DIN wear testing machine test operation methods and principles
DIN wear testing machine is an important indicator of the wear performance of many rubber products. Widely used in rubber tires, chariot tracks, soles and other rubber products with wear resistance as the main performance of the physical property test, with high efficiency, good reproducibility and easy operation characteristics, is to assist the industry to control the quality of the product state of the weapon. Tensile: maximum force, tensile strength, elongation at break, modulus of elasticity, etc. Bending resistance: maximum strength,... 18Mar