There are generally 3 points for actual operation of the disassembly method of automobile needle roller bearing 1) The knocking method, under normal circumstances, when the bearing needle roller is removed by the knocking method, the key function of the knocking force lies in the inner ring of the bearing, and it cannot be added […]
The hot metal overheats, which is the primary condition for improving the quality of malleable steel pipe casting. Research on the metallurgical properties of molten iron found that cast iron still maintains an inhomogeneous state for a long time after melting. The specific reason is not fully understood for the time being. It is generally […]
1. Liquid penetration testing Liquid penetration testing is used to inspect various opening defects on the surface of castings, such as surface cracks, surface pinholes and other defects that are difficult to find with the naked eye. Commonly used penetrant detection is color detection, which is to wet or spray a colored (usually red) liquid […]
1. Before installing the valve, carefully check whether the model and specifications of the valve used are consistent with the design; 2. According to the valve model and factory manual, check whether the valve can be used under the required conditions; 3. When lifting the valve, the rope should be tied to the flange connection […]
At present, the grooved pipe joint connection method is gradually promoted in various types of building installations. Its fast and reliable characteristics are being recognized by colleagues in the installation industry, and it is also widely used in fire protection engineering construction. However, what problems should be paid attention to when connecting rigid clamps and […]
Dacromet bolt is the transliteration and abbreviation of English DACROMET. Dacromet is a new kind of surface treatment technology. Compared with the painful electroplating technology, Dacromet can be said to be a kind of “green plating”. So, what are the advantages of Dacromet bolts compared with other bolts? Advantages 1. Although the thickness of the […]
Dacromet bolts are bolts with Dacromet plated on the bolt surface. It is a new type of surface treatment technology. Compared with the traditional electroplating process, if you only compare the anti-corrosion and oxidation functions, hot-dip galvanizing and mechanical galvanizing are better choices. However, in addition to these two points, these two surface treatment methods […]
When people use Dacromet bolts, there will always be problems of one kind or another. Let’s analyze together what causes such problems. 1. Material reasons: The threads of Dacromet bolts made of stainless steel, aluminum alloy and titanium alloy often lock or jam. These types of metal alloys have good ductility and are fundamentally different […]
Heat treatment technology is an important part of advanced manufacturing technology and also plays a very important role in the development of Dacromet bolts and high-end mechanical equipment. As we all know, there is no “chemical composition” will not be called a material, similarly, without “heat treatment” can not be called a material. Through heat […]
Looking at the development trajectory of the world, we can intuitively see that the current industry is different from the past industry development. It is closely related to our production and life. Our life is inseparable from the development of the machinery industry. The development of the machinery industry is inseparable from the development of […]
