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Section 1: Application of ductile iron in high-speed rail Ductile iron casting is widely used in the production of high-speed rail parts with its excellent tensile resistance and high load and friction. The axle box of high-speed rail bogie, the shell and end cover of high-speed rail traction motor, ... Read More
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The key point of lubrication of the chain is between the chain hub and the chain shaft, which is also the part most prone to wear. It will lengthen the chain. According to the regulations of the chain manufacturer, the chain is not more than 5 years, and the well lubricated chain can work for 15~20 ... Read More
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When most people hear the word hexagon holes, they think of screws with them. Sws are essential for assembling a variety of items, from bicycles to chairs, tables and shelves. Do you know how to drill the hexagon hole accurately? Drilling of hexagonal holes requires a metalworking technique called ... Read More
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1. Soft hand hammer For the soft hand hammer, as the name suggests, the hammer head is made of soft materials, such as cowhide, wood, plastic or brass, as shown in Figure 1. In automobile maintenance operations, the soft hand hammer is commonly used to knock the required workpiece or metal sheet. ... Read More
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01 Tensioner stuck or oil circuit blocked In the process of engine operation, the tension control of the chain is a crucial link. If the vehicle engine tensioner is stuck or the oil circuit is blocked, the chain will not be able to maintain the appropriate tension, and it is easy to cause abnormal ... Read More
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Do you need to produce a lot of plastic pipes, films or other long-shaped products? Extrusion molding can meet the processing technology you need! Through the precise control of the temperature and pressure, the liquid plastic can be shaped into all shapes and sizes. This article will detail the ... Read More
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The causes for the appearance of black spots on 7075 aluminum alloy after anodizing mainly include chemical reactions, improper treatment conditions, unclean raw materials, electrolyte contamination, and uneven heat treatment, etc. The solutions to these problems involve adjusting the parameters of ... Read More
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I. Definition and Structure A spline is a connection structure in mechanical transmission. It consists of an external spline on the shaft and an internal spline on parts such as the hub. The external spline usually has multiple key teeth machined on the surface of the shaft, shaped like a flower. ... Read More
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Hardness refers to the ability of a material to resist local deformation, especially plastic deformation, indentation or scratching. It is an indicator for measuring the hardness or softness of materials. Here is the comparison table of Vickers hardness, Brinell hardness and Rockwell hardness for ... Read More
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Threads, as an important mechanical connection element, are widely used in various fields. Different types of threads have significant differences in structure, performance, and application. This article will introduce in detail the differences among several commonly used threads like NPT, PT, G, ZG... Read More
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