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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 bett...
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What are the rules for metal stamping die scrap tube?

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The Purpose Standardize the management of the scrapping of the company's metal stamping dies, prevent the loss of company assets, and formulate this system specially. Scope of application It is suitable for the management of the company's scrap molds. Definition If the molds listed in the assets of the company fall under one of the following circumstances, the use management department may apply for scrapping. 1. Molds that exceed the specified service life. 2. The mold is severely damaged by accidents or accidents, and molds that cannot be repaired or have no repair value. 3. Metal stamping dies that have not reached the service life, but due to safety, quality, efficiency and other issues, the repair still fails to meet the minimum requirements of the customer's product process or affects the production safety and efficiency. 4. Product customers have stopped placing orders or have not placed orders for molds in several years. 4. Responsibilities 1. Responsibilities of th...
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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 stre...
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A well-designed engine oil filtration system is closely related to the service life of the oil

cncmachining January 11, 2022

 

Some industrial engines are designed to use gaseous fuels (such as natural gas). Although this type of engine is similar to a diesel engine, it has been improved so that the combustion reaction in the cylinder is started by electric sparks. This is different from a real diesel engine. Industrial diesel engines in actual use are equipped with reciprocating pistons. Diesel engines can be either two-stroke or four-stroke. According to the arrangement of cylinders, fuel engines can be divided into vertical, horizontal or with a certain inclination, such as V-shaped engines. The type of engine used in the industry depends on the requirements for engine power, weight and size. The main function of engine oil in the engine is to reduce friction, absorb frictional heat, and cool the engine.

In order to meet the design requirements of different types of engines, a series of engine oils with viscosity and quality grades have been developed. In order to reduce the formation of deposits and coke, all engine oils must have good thermal oxidation stability to extend the oil drain period. A well-designed engine oil filtration system is also closely related to the service life of the oil. In addition to reducing friction, the oil also has the function of removing metal wear particles between the fine gaps on the moving surface and keeping it clean. The products of the combustion of wear particles and fuel must remain suspended in the oil in order to be filtered out by the engine oil filter device. The operating conditions of the diesel engine are variable, including low-speed stable output, medium-speed variable output, high-speed and high-output. Because the cleanliness of the oil plays an important role in the engine, the oil must contain a detergent and dispersant. Engines with high compression ratios have a tendency to accelerate the formation of oil precipitation. Engine oil with high-definition cleanliness can keep the piston clean, reduce the rate of wear between the cylinder and the piston ring, and prolong the service life of the engine. Detergents can prevent decomposition products from depositing on piston rings, pumping paths and other components. Oil temperature has a significant effect on dispersion, and it is difficult to achieve good dispersion effect at low temperature, but for diesel engine crankcase oil with high power output, low temperature dispersion is often the most basic requirement.

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：A well-designed engine oil filtration system is closely related to the service life of the oil

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