News Archive
The key points of actual operation of the disassembly method of automobile needle roller bearing
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 influence of molten iron superheat on the quality of malleable steel pipe fittings
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 […]
What are the surface inspections of casting products?
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 […]
What are the valve installation requirements?
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 […]
Problems that should be paid attention to when installing grooved pipe fittings
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 […]
Advantages and disadvantages of Dacromet bolts
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 […]
Precautions for Dacromet bolt application and causes of rust
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 […]
What problems are prone to occur during the use of Dacromet bolts?
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 […]
What are the methods to clean Dacromet bolts?
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 […]
Dacromet bolts play a very important role in the development of the machinery industry
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 […]
Some tips on buying gasket products
At present, gaskets will also be widely used in many industries. Regardless of their small size, they can play a very important role. So how do we choose when we need a gasket? 1. The type and scope of gaskets should conform to the design documents and current effective standards of the country and related […]
What should I pay attention to when using gaskets with flange connections?
What should I pay attention to when using gaskets with flange connections? Definition of gasket: The gasket is made of paper, rubber sheet or copper sheet. It is a material placed between two planes to strengthen the seal. It is a sealing element arranged between static sealing surfaces to prevent fluid leakage. When the flange […]
What are the advantages of spiral wound gaskets?
The six advantages of metal spiral wound gaskets are specifically introduced as follows: 1. The metal spiral wound gasket has good compressibility and elasticity. 2. The metal spiral wound gasket has proper plasticity. After compression, it can adapt to uneven sealing surfaces, fill gaps in the sealing surfaces, and ensure good sealing performance when the […]
What is a nut?
A nut is a nut, a part that is screwed together to fix it with a bolt or screw. According to different materials, the components used in the manufacturing machinery of nuts are divided into several main types such as carbon steel, stainless steel, and non-ferrous metals (such as copper). The locknut consists of two […]
How to judge the strength of hexagon socket bolts?
Cylinder head hexagon socket screws, also known as hexagon socket bolts, cup head screws and hexagon socket screws, have different names, but they have the same meaning. Commonly used hexagon socket screws also have 4.8, 8.8, 10.9 and 12.9. Also called hexagon socket bolt, the head is hexagonal and cylindrical. According to the material, there […]
What is the working principle of the nut?
A nut is a nut, a part that is screwed together to fix it with a bolt or screw. The materials are divided into carbon steel, stainless steel, non-ferrous metals (such as copper), etc. Nuts are parts that tightly connect mechanical equipment. Through the internal thread, nuts and bolts of the same specification can be […]
What are the anti-corrosion treatment methods for hexagon head bolts?
When using hexagon head bolts, anti-corrosion treatment is a very important requirement. Depending on the corrosion conditions, different treatment methods can be used. 1) Oxidation Since it hardly has the ability to prevent rust due to blackening, it will quickly rust without oil. The torque preload consistency of the blackened square column template is also […]
How should the bolts be maintained?
Bolt fasteners have become a very important part of the mechanical field, which means that we usually need to pay attention to the maintenance and maintenance of bolts, so that they can play the greatest role in the mechanical field. If they are not standardized in use, they will reduce Its service life. For the […]
What is the correct installation method for stainless steel flanges?
What is the correct installation method for stainless steel flanges? 1. the stainless steel flange should have sufficient strength and not deform when tightened. The flange sealing surface should be flat and clean, and the oil stains and rust spots should be carefully cleaned up when installing the stainless steel flange. 2.the gasket should have […]
Weldability and its test evaluation for carbon steel material
Carbon steel weldability and its test evaluation 1. Welding: A process in which two objects are combined between atoms to form an inseparable whole by heating or pressing, with or without filling materials. 2. Weldability: refers to the ability of homogeneous or dissimilar materials to be welded to form a complete joint and meet the […]
