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  • Determination of white spots in forging steel and measures to eliminate them

    Determination of white spots in forging steel and measures to eliminate them

    Forgings in the “white spot” is a common product of metallurgy and forging, the defect is in the smelting of materials bred in the forgings found, “white spot” is commonly distributed in the form of a group in the more central part of the forgings, the forgings are very harm ...

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  • Processability analysis and blank selection of parts

    Processability analysis and blank selection of parts

    Process analysis of the machined parts is to analyze and study the product assembly drawings and parts diagrams, become familiar with the use, performance and working conditions of the product, clarify the position and role of the machined parts in the product, and on this basis check the complet ...

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  • Construction process standards for copper and brass piping

    Construction process standards for copper and brass piping

    This process standard applies to the installation of purple copper piping with a working pressure of 4MPa or less and a temperature of 250-196℃ and brass piping with a working pressure of 22MPa or less and a temperature of 120-158℃. Construction preparation Commonly used ma ...

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  • What is weld cracking

    What is weld cracking

    What is weld cracking? Weld cracking is one of the most common serious defects in welded parts. In the joint of welding stress and other embrittlement-causing factors, the welded joint is damaged by the local area of the metal atomic bonding and the formation of a new interface resulting from ...

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  • What kind of bar carrying technique for welders to be correct

    What kind of bar carrying technique for welders to be correct

    Boilers and pressure vessels and other important structures, requiring a safe weld through the joint, but due to the size and shape of the structure and other restrictions, sometimes can not be double-sided welding. Can only open a single-sided bevel special operation method single-sided welding do ...

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  • Research on modern machinery manufacturing process and precision machining technology

    Research on modern machinery manufacturing process and precision machining technology

    With China’s socialist economy and social development into a new normal, many aspects of social productivity development need to obtain a higher level of technical support, with modern machinery manufacturing technology and precision machining technology as the representative of high-tech h ...

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  • What is Honing

    What is Honing

    What is Honing? Honing, also known as boring, is the finishing of a finishing surface with an oil stone (also known as a honing bar) set in a honing head. The principle of honing Considering the honing oil stone and the workpiece as two mutually researched surfaces, in order to achiev ...

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  • Application status and Prospect of titanium alloy

    Application status and Prospect of titanium alloy

    The oceans, which account for about 71% of the earth’s surface area, are rich in resources. Developing and using the oceans to make them the source of our great wealth has become one of the directions of people’s efforts for many years. However, seawater is corrosive because it contains ...

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  • Why do steels with high carbon content break easily

    Why do steels with high carbon content break easily

    Why is steel with high carbon content easy to break? Bars with high carbon content have broken many times, such as 45# steel shafts, which break after a short period of use. Taking samples from the fractured parts for metallographic analysis, the causes are often not found, that is, it is far fe ...

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  • What is heat treatment

    What is heat treatment

    What is heat treatment? Heat treatment is a metal hot working process in which materials are heated, insulated and cooled in the solid state to obtain the expected microstructure and properties. Characteristics of metal heat treatment process Metal heat treatment is one of the importan ...

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  • What is low stress brittle fracture

    What is low stress brittle fracture

    What is low stress brittle fracture? Low stress brittle fracture refers to the sudden fracture of the structure when the stress level is low or even lower than the yield point stress of the material. The main macroscopic feature is that there is no obvious plastic deformation in the structure, ...

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  • Material selection of pressure piping

    Material selection of pressure piping

    The practical application environmental conditions in engineering are very complex. The combination of different media, media temperature, media pressure and other operating conditions constitutes countless material selection conditions. In terms of common material selection conditions, it is unrea ...

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