Search This Blog

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

Hydrostatic guideway of CNC machining lathe

The static pressure slide rail (TTW guide) of the CNC machining lathe transfers the oil with a certain pressure through the throttle to the oil cavity between the sliding surfaces of the slide rail (TTW guide) to form a pressure oil film to float the moving parts , Make the sliding rail (TTW guide) surface in a pure liquid friction state.   CNC machining General CNC machining usually refers to computer digital control precision machining, CNC machining lathe, CNC machining milling machine, CNC machining c17200   beryllium   copper   and milling machine, etc. The feed route of finishing is basically carried out along the part contour sequence. Therefore, the focus of determining the feed route is to determine the feed route of rough machining and idle stroke. In the numerical control processing, the control system issues instructions to make the tool perform various motions that meet the requirements, and the shape and size of the workpiece are expressed in the form of numbers and lette

Introduction of KOVAR parts

KOVAR parts are commonly used as metal casing materials in the electronic packaging industry. Because they have a linear expansion coefficient close to that of molybdenum group glass, and can produce less sealing stress during the sealing (melting) process with molybdenum group glass, so To obtain good air-tightness, in order to make the metal tube and shell to achieve air-tight sealing, in the entire sealing process, the annealing process undoubtedly plays an important role as a link between the previous and the next. The internal stress generated during KOVAR  machining also prepares the material structure for the implementation of the subsequent process-the sealing process of the metal parts. The main purpose of annealing Kovar shell before sealing is to: (1) Eliminate machining stress. When Kovar undergoes plastic machining deformation during cold working, about 10% to 15% of the applied energy is converted into internal energy, which is commonly referred to as internal stress,

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.

For 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.

Link to this article:Evaluating the oil change period of diesel engine oil no longer requires a great safety factor

Reprint Statement: If there are no special instructions, all articles on this site are original. Please indicate the source for reprinting.:Cnc Machining,Thank

Contact Us

Get In Touch or Get A Quote

Need an expert? you are more than welcomed to
leave your contact info and we will be in touch shortly
Sifangyuan Industrial Park, Xinshapu, Huaide Community
Humen town, Dongguan City, Guangdong Province.