When the vulcanizer enters the experiment, how should the temperature affecting one of the result parameters be set

The vulcanization instrument measures the change of shear modulus of the rubber in the vulcanization process, and the shear modulus is proportional to the crosslinking density, so the measurement results reflect the change of the crosslinking degree of the rubber in the vulcanization process, and can measure the initial viscosity of the rubber, the coke time, the vulcanization rate, the positive vulcanization time and the persulfur reactivation. The vulcanizer automatically records the torque value reflecting the shear strain generated by...

Martindale wear tester in the use of operation precautions and maintenance methods

Martindale wear tester in the use of operation precautions and maintenance methods Martindale wear-resistant tester is a special instrument for detecting fabric wear-resistant pilling performance, the instrument is powerful, the following to introduce the instrument to detect the pilling performance of the operation precautions and the maintenance of the instrument. Martindale wear testing machine operation precautions: 1, the friction cloth can not be used repeatedly, each test needs to replace a piece of friction cloth; 2, wool felt can be used repeatedly, if...

Commonly used tensile testing machine, do not wait until the parts are damaged before maintenance

Tensile testing machine is also known as universal material testing machine. As an important part of the instrument, different materials need different fixtures, which is also an important factor in whether the test can be carried out smoothly and the accuracy of the test results. But the regular use of tensile testing machine is also caused by the impact, some parts may fail, so when these parts fail, how should it be maintained 1 When the tension machine is loaded, the...

The use of vibration testing machine precautions and maintenance finishing steps

Vibration testing machine is widely used in national defense, aviation, aerospace, communications, electronics, automobiles, home appliances, medicine and food packaging and other industries laboratory and production line vibration test of product samples. This type of equipment is used to detect early faults, simulate the sinusoidal and random vibration capacity suffered by the product during manufacturing, assembly, transportation and use, and assess the vibration resistance, reliability and integrity of its structure. Several details that should be paid attention to when using...

There are several factors that can analyze the quality of photoelectric direct reading spectrometer

Photoelectric direct reading spectrometer is a rapid quantitative analysis instrument for the analysis of ferrous metals and non-ferrous metals. This instrument is widely used in metallurgy, machinery and other industrial sectors, to carry out online analysis before the smelting furnace and product inspection in the central laboratory, is one of the effective means to control product quality. What are the seven factors that affect the analysis quality of direct reading tube spectrometer 1. Argon The main function of argon blowing is to...

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...

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...

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...