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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

Analysis on the matching of auto parts industry

China’s auto parts industry is highly fragmented, a single individual has little capital, and its competitiveness is weak. It cannot form a strong competitive advantage by itself. At present, China’s auto parts industry is still at a low level, with repeated fragmentation, low concentration, and single supporting facilities. Most of the auto parts companies only provide a complete set of auto parts, unable to form a large-scale production, can not effectively reduce the cost of enterprises. At the same time, the product structure of auto parts is unreasonable. There are too few high-tech products and high value-added products. They are mainly concentrated in labor-intensive low value-added products. The scale is small, the product types are more, and the level of specialization is low. Low production efficiency.

At 20°C to 40°C, the NOx mass fraction shows an upward trend. This is due to the decrease in the proportion of premixed combustion at the initial stage of combustion and the earlier occurrence of the highest explosion pressure. When the intake air temperature is from 40℃ to 50℃, the mass fraction of NOx shows a downward trend. This is due to the shortening of the combustion reaction time and the decrease of the maximum explosion pressure. In addition, the combustion avoids the top dead center and more combustion is concentrated in the downward phase of the piston. reason.

In summary, lowering the intake air temperature can effectively reduce soot and NOx emissions. Under the conditions of an intake pressure of 2.6MPa and an EGR rate of 0.3, the effects of different intake temperatures on the combustion of high-density and low-temperature diesel engines are studied, and it is concluded that the combustion mode of high-density and low-temperature diesel engines has greater advantages in achieving low emissions and high thermal efficiency. potential. Due to the low market access standards in China’s auto parts industry, more and more manufacturers have entered, which has led to a narrowing of the distance between price and cost. The specialization of technical equipment and labor organization has promoted the improvement of the efficiency of enterprises in the industrial cluster.

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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