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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 bett...

What are the rules for metal stamping die scrap tube?

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...

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 stre...

Internal combustion engine is the main source of power for automobiles and construction machinery

The internal combustion engine is the main source of power for automobiles and construction machinery, and internal combustion engines mainly include gasoline engines and diesel engines. Diesel engines are widely used in trucks due to their own advantages such as high thermal efficiency, wide application range, and fuel economy. In particular, it can meet the needs of construction machinery operating conditions. Therefore, most construction machinery uses diesel engines as their power source. However, if it is improperly used and maintained, it is prone to overheating failure. Internal combustion engines for construction machinery are more prone to overheating failures due to their complex operating conditions and harsh operating environment. If the overheating fault is not eliminated in time, it will be more harmful and easily cause damage to the mechanical parts, increase fuel consumption, and reduce output power. As a repairer, he often encounters the treatment of the overheating failure of the internal combustion engine during the repair process. So how to quickly and accurately find out the cause of overheating faults and eliminate them in time is very important, which is of great significance for giving full play to the economic and dynamic performance of mechanical equipment and improving its service life. The hazards and causes of internal combustion engine overheating failures are very harmful. Long-term overheating can easily cause deformation, melting, jamming, and cylinder pulling of mechanical parts, which will increase fuel consumption and reduce output power. There are many reasons for the overheating of internal combustion engines, such as heavy load operations on ramps, hot summer and desert plateau areas with high ambient temperature, the cooling system is affected and cannot function fully, long-term overload and high-speed operation conditions, etc. . These are caused by the influence of environmental factors in the operation of construction machinery, and can generally be overcome by improving working conditions and reasonable operation. For the overheating of the body caused by the failure of the internal combustion engine, inspection and maintenance are required to restore normal operation. Overheating caused by internal combustion engine failure mainly includes insufficient cooling water in the cooling system and excessive fouling in the cooling water passage around the cylinder liner, thermostat failure, poor radiator performance, abnormal exhaust valve clearance, incorrect valve phase, and ignition timing failure factors, etc. . Therefore, when the internal combustion engine has an overheating fault, it is necessary to scientifically analyze and judge the fault phenomenon and find the cause of the fault in time. 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.

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