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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

Evaluating the oil change period of diesel engine oil no longer requires a great safety factor

Reduction of maintenance costs Due to the increase in labor and material costs, only maintenance costs can be reduced to reduce overall operating costs. The key is to extend the service cycle ESI (Extended Service Interval). Generally, the oil change period of lubricating oil is short. Therefore, it is necessary to extend the lubricating oil change. The oil period is the most important task, and it is also the most demanding. In the past 10 years, the typical diesel engine oil change period in the United States has been extended three times, mainly due to the following factors: (1) In recent years, diesel engine oil specifications have been rapidly improved. Take API specification as an example, it has been developed from APICF-4 specification to today’s APICH-4+ specification. High-quality diesel engine oil can extend the oil change period of diesel engine oil without any negative impact on engine durability. High-quality diesel engine oil should have high-quality base oil, and the amount of additives is also larger, and the test methods are more extensive. Although the price of high-quality diesel engine oil is higher, its high efficiency can reduce the overall operating cost. (2) Improved the understanding of the oil degradation process (UnderstandingOfTheOilDegradationProcess), and linked it to the specific operating conditions of the diesel engine. In the past, the diesel oil change period was usually obtained from time-consuming and expensive off-road tests. Due to the more accurate diesel engine oil degradation model, it is no longer necessary to evaluate the diesel oil change period without a large safety factor, and it can also be specific A certain operation process; the lubricant degradation model is the best way to produce the evaluation results in time, and has been successfully applied so far. (3) The improvement of diesel engine design and consumers’ awareness of proper maintenance of vehicles have greatly reduced the possibility of unconscious pollution of diesel engine oil or failure to replace it in time. In addition to the direct economic benefits brought about by the extension of the diesel oil change period, the flexible design and structure of modern high-tech diesel engines also saves a lot of labor and working time, resulting in greater indirect economic benefits.

The status quo and development trend of diesel engine oil, the status quo of diesel engine oil Since the birth of CD diesel engine oil in the 1950s, diesel engine oil has not changed much for more than 30 years. It was only in the 1970s that API, SAE and ASTM jointly formulated the C series of diesel engine oil standards by CRC and revised the Cat.1G method to Cat.1G2Y, which increased the severity of the test.

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