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Working principle of slow wire processing

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 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
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Hydrostatic guideway of CNC machining lathe

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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

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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,
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How to choose lubricating oil correctly

cncmachining November 27, 2021

 

Lubricating oil is another big expense for car owners. To put it in exaggeration, lubricating oil is like human blood. The human body cannot do without blood for a moment, and the engine cannot do without lubricating oil for a moment. Cars basically need to change the lubricant every 5000-7500 kilometers.

As one of the most important protection products for automobiles, the selection of high-quality lubricating oil can effectively protect the engine, reduce wear and tear, and make the vehicle more economical.

For the lubricants used in cars, experts suggest: Only buy the right ones and not the expensive ones.

When choosing lubricants, many car owners believe that the higher the lubricant grade (label), the better, the brand-name, the better, and the more expensive the better. In fact, this is not necessary. The price of imported oil is 30% to 40% higher than that of domestically produced famous brands, and more than twice as expensive as ordinary domestically produced oils, so there is no need to blindly pursue famous brands at high prices.

Special reminder: The choice of lubricating oil should be selected according to the requirements of the engine. It is not necessary to use high-grade lubricating oil on engines with lower requirements, and it is not necessary to use lower-grade lubricating oils on engines with higher requirements. According to the technical requirements and conditions of use of the vehicle, it is necessary to “do what it takes”. For example, engine oil, for domestic cars, some domestically produced SJ grade engine oils can fully meet the requirements, and there is no need to buy imported ones.

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.

Link to this article：How to choose lubricating oil correctly

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