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Working principle of slow wire processing

 Slow wire walking, also called low-speed wire walking, is a kind of CNC machining machine tool that uses continuously moving fine metal wire as an electrode to pulse spark discharge on the workpiece to generate a high temperature of over 6000 degrees, ablate metal and cut into a workpiece. The principle of wire processing is the phenomenon that there is a gap between the wire electrode and the workpiece, and the metal is removed by continuous discharge. Since the slow-moving wire cutting machine adopts the method of wire electrode continuous feeding, that is, the wire electrode is processed during the movement, so even if the wire electrode is worn out, it can be continuously supplemented, so it can improve the machining accuracy of the parts and slow the wire. The surface roughness of the workpiece processed by the cutting machine can usually reach Ra=0.8μm and above, and the roundness error, linear error and dimensional error of the slow-moving wire cutting machine are much better t

How Do Cnc Swiss Machines Work

How Do Cnc Swiss Machines Work Save 0 What Is Swiss Machine –The full name of the walking CNC lathe, it can also be called the spindle box mobile CNC automatic lathe, the economical turning and milling compound machine tool or the slitting lathe. It belongs to precision machining equipment, which can complete compound  machining such as turning, milling, drilling, boring, tapping, and engraving at one time. It is mainly used for batch  machining of precision hardware and special-shaped shafts. This machine tool first originated in Germany and Switzerland. In the early stage, it was mainly used for precision machining of military equipment. With the continuous development and expansion of industrialization, due to the urgent needs of the market, it was gradually applied to the  machining of civilian products; the development of similar machine tools in Japan and South Korea Earlier than China, it was mainly used in the military industry in the early days. After the war, it was gradually

Spring Design Attention And Roll Forming Method

Spring Design Attention And Roll Forming Method The coiling characteristics and methods of springs are divided into cold coiling method and hot coiling method. Cold winding method: When the diameter of the spring wire is less than 8mm, the cold winding method is adopted. High-quality carbon spring steel wire is usually first cold drawn and then heat treated. After winding, it is generally not quenched, but only tempered at low temperature to eliminate the internal stress during winding. Hot-rolling method: Springs with larger diameter (>8mm) spring wire should use hot-rolling method. Hot rolled springs must be quenched and tempered at medium temperature. The Design Process Of Various Springs ·          Installation space: When designing a  compression spring , it is necessary to have a clear understanding of the space required for the installation of the spring, in order to effectively grasp the basic manufacturing conditions of the compression spring, including the outer diam

Simulated radiator heat transfer performance comparison table Simulated radiator resistance performance comparison

 

From the simulation data of the double-drain pipe type radiator, the wave distance can be known from the simulation data. The water flow rate of the first drain pipe is basically the same, but the heat dissipation capacity of the second drain pipe is obviously smaller than that of the first row, which is only the first row. The simulation results found that after the cooling air exchanges heat with the second drain pipe, the temperature rises, and the temperature of the air inlet that exchanges heat with the second drain pipe increases, so that the average temperature difference between water and air in the second drain pipe decreases. According to the knowledge of heat transfer, the heat dissipation coefficient of the radiator is related to the average temperature difference between water and air, which is why the heat dissipation of the first drain pipe is significantly smaller than that of the first row. Comparison of results and conclusions The analysis table and table are the comparison of heat transfer performance and resistance performance of single drain pipe and double drain pipe radiator.

Table simulated radiator heat transfer performance comparison table simulated radiator resistance performance comparison can be seen from the table, although the heat dissipation area of ​​the double drain pipe radiator is twice that of the single drain pipe radiator, but under the same working conditions, the double drain Compared with the single drain pipe type, the heat dissipation of the pipe type is only increased, but the wind resistance is nearly doubled. At the same time, the material used to manufacture the double drain pipe type radiator is also the same as the single drain pipe type, so the quality and manufacturing cost of the radiator will increase accordingly. Considering the heat transfer performance, resistance performance, economy and reliability of the radiator, it is not the most effective method to increase the number of water pipe rows to increase the heat dissipation of the radiator. In the actual design of automobile radiators, the improvement of the heat transfer coefficient of the tube-strip radiator should be considered from the aspects of optimizing the structural design of the radiator and improving the manufacturing process. Through the heat transfer wind tunnel test and numerical simulation study of a commercial vehicle tube belt radiator, according to the comparison and analysis of the simulation results, under the same working conditions, the double drain pipe type only increases the heat dissipation than the single drain pipe type. , While the wind resistance has nearly doubled, and the manufacturing materials have also nearly doubled. Therefore, considering the heat exchange performance, resistance performance, economy and reliability of the radiator, it is not the most effective method to increase the number of water pipe rows to increase the heat dissipation of the radiator.

The automotive parts and parts machining, PTJ Shop offers the highest degree of OEM service with a basis of 10+ years experience serving the automotive industry. Our automotive precision shop and experts deliver confidence. We have perfected the art of producing large component volumes with complete JIT reliability, backed by the quality and long-term reliability our customers expect.

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