Materials include base material and welding material. Under the same welding conditions, the main factors determining the weldability of base metal are its physical properties and chemical composition. …
Lubrication system is generally composed of oil sump, oil pump, pressure limiting valve and bypass valve, oil filter, oil cooler, sensor and oil pressure gauge, thermometer and so on…
The most suitable lubricating medium, additives and emulsion are selected according to the actual equipment and the data provided by the equipment supplier…
High-speed punch press, born in the 1950s, has been growing with the rapid development of electronic computer technology, greatly promoting the development of industrialization in the world…
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