Utmt miner
here I'd like to share with you the tips I found in the first 30 layers. At present, my hammer has not been upgraded. I don't know if it's useful in the back of the 31 layers
don't rush to smash the ore when you go down the mine. The probability of getting out of the stairs is very low around the stairs + ore. if you dig around the stairs, if you don't have good luck, you will dig around the ore
it takes at least 2 hours to enter the mine. If you don't stay in the mine for 2 hours, you will lose time when you come out.
1、 Refers to different
1, magnetic particle testing: also known as magnetic particle testing, is to use magnetic powder as the display medium to observe the defects
Ultrasonic testing: also known as ultrasonic testing, it is a non-destructive testing method that uses ultrasonic to inspect the internal defects of metal components Magnetic particle testing: in the process of testing, the magnetic suspension is evenly distributed on the surface of the workpiece, and the shape and size of defects are displayed by using the flow of the carrier liquid and the attraction of magnetic powder by magnetic leakage field. Due to the dispersing effect and suspension performance of magnetic suspension, the particle size of magnetic powder can be smaller in wet testing2. Ultrasonic testing: the transmitting probe is used to transmit the ultrasonic wave to the surface of the component through the coupling agent. When the ultrasonic wave propagates inside the component, there will be different reflected signals (echoes) at different interfaces. Using the time difference of different reflected signals to the probe, the internal defects of the component can be detected
Magnetic particle testing: magnetic particle testing can only be used to detect the surface or near surface defects of ferromagnetic materials, because the discontinuous magnetic traces are stacked on the tested surface, it can directly show the shape, position and size of the discontinuity, and roughly determine its properties Ultrasonic testing: according to the height and position of the echo signal displayed on the fluorescent screen, the size, position and general property of defects can be judged. 3 ultrasonic testing is more sensitive to crack, incomplete penetration and incomplete fusion defects, but less sensitive to porosity and slag inclusion. Ultrasonic testing is not intuitive and easy to miss1. UT: ultrasonic test ultrasonic flaw detection is a method to check the defects of parts by using the characteristics of reflection at the interface edge when the ultrasonic energy penetrates into the depth of metal materials and enters into another section from one section. When the ultrasonic beam passes from the probe head to the metal from the surface of parts, the reflection wave will occur respectively when it meets the defects and the bottom of parts, The position and size of the defect can be judged according to the pulse waveform formed on the screen
these methods are different detection means, which should be studied separately. They have different theoretical basis, different detection principles, different detection methods, and different detection effect, which are complementary to each other
< H2 > reference: Network - Ultrasonic Testing Network - magnetic particle testing network - Radiographic Testing Network - Penetrant testing network - eddy current testingRT: radiographic inspection
ut: ultrasonic inspection
MT: magnetic particle inspection belongs to non-destructive inspection
MT: magnetic test
magnetic particle inspection has another name: MPI, that is,
magnetic particle inspection
in addition, NDT is non destructive testing in English. Non destructive testing refers to the physical or chemical methods, with the help of modern technology and equipment, to analyze the internal and surface structure, properties and mechanical properties of the test piece by using the changes of thermal, acoustic, optical, electrical, magnetic and other reactions caused by the abnormal internal structure or defects of the material, on the premise of not damaging or affecting the service performance of the tested object and the internal organization of the tested object State and defect type, nature, quantity, shape, location, size, distribution and change of inspection and testing method [1]. Nondestructive testing is an indispensable and effective tool for instrial development. To a certain extent, it reflects the instrial development level of a country. The importance of nondestructive testing has been recognized, including radiographic testing (RT), ultrasonic testing (UT), magnetic particle testing (MT) and liquid penetrant testing (PT). Other nondestructive testing methods include eddy current testing (ECT), acoustic emission testing (AE), thermal imaging / infrared (TIR), leakage test (LT), AC field measurement technology (acfmt), magnetic flux leakage testing (MFL), far field testing (RFT), ultrasonic time difference of diffraction (TOFD), etc.
there are four kinds of commonly used ship nondestructive testing. For welds, UT and RT are widely used, of course, it is necessary to use MT & # 92; Pt to assist. In ship repair instry, MT is generally used to detect tail shaft and weld; PT is generally used in propeller root, blade tip and edge, also used in the detection of offshore pipe and outer plate, bolt connecting rod tooth surface, etc
among them, ut can best reflect the personal level of an on-site personnel, and it is also a kind of test that most needs professional ethics. I have done a refit ship, the scene has flaw detection supervision tracking the whole process of UT, a doubt will immediately put forward
RT focuses on the control of film blackness and film evaluation. Blackness includes many process factors, such as film performance, field focus and hint processing. Film evaluation is mainly the accumulation of experience and the skillful use of standards
the key to MT lies in the operating proceres, which foreigners attach great importance to. There is also more experience, for weld cracks MT is very useful
PT is mainly used in propeller, main engine connecting rod, cylinder head, bolt and other parts. It can also be used as an auxiliary method for weld inspection
if you see the supplement of 30, it's the lowest per meter. The key is whether the other party should report it or not
penetrant testing is applicable to the detection of surface opening defects of plates, composite plates, forgings, pipes and welds. Penetrant testing is not suitable for testing porous materials
magnetic particle testing is applicable to the detection of surface and near surface defects of ferromagnetic materials such as plates, composite plates, pipes and forgings; It is also suitable for the detection of surface and near surface defects of ferromagnetic butt welded joints, T-type welded joints and fillet welds. Magnetic particle testing is not applicable to the testing of non ferromagnetic materials
radiographic testing is applicable to the detection of fusion welded butt joints of metal plates and pipes of boilers, pressure vessels and pressure pipes. The metal materials used for making welded joints include carbon steel, low alloy steel, stainless steel, copper and copper alloy, aluminum and aluminum alloy, titanium and titanium alloy, nickel and nickel alloy. Radiographic testing is not suitable for the testing of forgings, pipes and bars. Generally, radiographic testing is not used for T-type weld, fillet weld and surfacing layer
ultrasonic testing is applicable to the testing of raw materials and parts of boilers, pressure vessels and pressure pipes, such as plates, composite plates, carbon steel and low alloy steel forgings, pipes, bars, austenitic stainless steel forgings, etc; It is also suitable for the detection of butt weld, T-type weld, fillet weld and surfacing layer of boiler, pressure vessel and pressure pipeline.