PHNIX double heat source heat pump hot water machine se…

● Various heat sources and stable units: The unit adopts double heat source design, and different heat sources can be used in different seasons. In summer, water (cooling water and domestic wastewater) is used as a heat source. In winter, water (domestic wastewater, swimming pool sauna waste ...READING MORE...

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Main mathematical model of non-NC ball-milling cutter

1 Introduction Ball-end milling cutters are important tools for CNC machining of complex surfaces (especially free-form surfaces). The market demand is large. Due to the complex shape of ball-end milling cutters, most of the processing of ball-end cutters at home and abroad are curren ...READING MORE...

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Four Light Passengers Major City Logistics

“With an increase of 1% in urban logistics business, urban logistics vehicles will increase by 3.9%. An increasingly large market has stimulated more and more manufacturers to try to enter this field, which also makes the quality of Chinese urban logistics vehicles uneven. "Noisy," ...READING MORE...

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Brief introduction to the method of effectively reducin…

Cavitation is one of the common faults in hydraulic machinery. Due to the unreasonable design of inlet pool or pipeline and the incomplete consideration of atmospheric pressure, temperature, and the change of gasification pressure of the medium, the pump often fails due to cavitation. Already inst ...READING MORE...

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Technical difficulties and countermeasures of ultra-fin…

1 Introduction Microfabrication technology refers to the manufacturing and processing technology of small-sized parts. With the development of aerospace, defense industry, modern medicine, and bioengineering technology, more and more miniaturized, miniaturized equipment, and micro-siz ...READING MORE...

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Zhenhai Refining & Chemical No. 2 catalytic new sup…

Recently, Zhenhai Refining & Chemical Co., Ltd., which was under construction by Ningbo Engineering Company, successfully commissioned a new supercharger, which was highly praised by the owners and supervisors. The Zhenhai Refining & Chemical No. 2 catalytic new supercharg ...READING MORE...

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Blade: centrifugal pump head high, low determinants

First, with the blade outlet placement angle β2A relationship When the others are fixed value, the bigger the exit angle is, the higher the theoretical lift is and the smaller the exit angle is. With the increase of flow rate, the theoretical lift is reduced accordingly. Second, the relationsh ...READING MORE...

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