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Shaft crack rotor dynamics (2)
where E - Young modulus, I - diametral inertia moment of the shaft section, kinitmh– coefficient of moment stiffness of an equivalent link corresponding to fully open crack. The equation has two summands – flexibility related to...Views -
Shaft crack rotor dynamics (1)
Introduction The important direction in vibration diagnostics of aviation gas turbine engines and turbomachines isdiagnostics through modelling. Modelling gives an opportunity to link the presence of some kinds of machine defects with si...Views -
What is "metallurgy", you will understand after reading this!
Powder metallurgy is a process technology for preparing metal or using metal powder (or a mixture of metal powder and non-metal powder) as raw materials, forming and sintering, to produce metal materials, composite materials and various ...Views -
1J79(Permalloy 80, Magnifier 7904, 79HM,PC) alloy powder
1J79 similar grades: Permalloy 80, Magnifier 7904, 79HM (Russia), PC (Japan), is a common iron-nickel-based soft magnetic alloy (permalloy) with high magnetic permeability. It achieves sufficient magnetic permeability and magnetic satura...Views -
LANZHU powder metallurgy technology can maximize the potential of various material properties!
As we all know, the high-temperature alloy developed with jet technology is a kind of high-temperature structural material with the most complex composition and high technical content, which has had a great impact on modern aviation. As ...Views -
a-286 Pin shaft
Today the a-286 pin shaft are about to be delivered. They are very beautiful, both in gloss and shape.A286 (1.4980) Pin shaft, are stainless steel alloys containing iron, nickel and chromium. A286 are known for their high strength, creep...Views -
Nickel alloy718 bolt
Description:An age hardened nickel-chromium-based superalloy, In718 bolts are ideal for extreme environments that require oxidation and corrosion resistant bolts, even when subjected to pressure and heat. Twice as strong as In625 bolts, ...Views -
Corrosion resistance of stainless steel
Corrosion resistance of various stainless steels304: It is a universal stainless steel, which is widely used to make equipment and parts that require good comprehensive performance (corrosion resistance and formability).301: Stainless st...Views -
Pre-alloyed powder manufacturing method and its characteristics
High pressure atomizationThe pre-alloyed powder high-pressure atomization method is to pre-smelt various components of metals into alloys before sintering according to the designed carcass ratio, and then atomize and spray the powder to ...Views -
718 alloy LANZHU product identification
Starting from the end of 2020,lanzhu’s shaft sleeves and shaft sleeves all bear the lanzhulogo to make it clear to you.At present, most 718 alloy forged bushings are known for their high temperature resistance. The yield strength below ...Views -
Invar36 export product
Invar36 has always been a core subject in Shanghai Lanzhu.Because it's professionalism, it is focused.In 2020, China is going through the most difficult period, but we have a strong motherland as the back, so this passed quickly.We f...Views -
![[Invar application] clock balance spring](/file/upload/202105/24/11/11161848848.jpg)
[Invar application] clock balance spring
Since the invention of the portable timepiece, the vibration system mode of the balance wheel + hairspring has been determined. Mechanical clocks and watches use the balance spring assembly as the vibration system to generate the standar...Views