(1) The heat treatment after film formation is effective for alleviating the internal stress of the film and reducing the coercive force, and the magnetostriction can be remarkably increased. At this time, when the heat treatment temperature is 300, magnetostriction of 70210-6 can be obtained.
(2) Since the sputtered film has a small specific magnetic permeability, it is difficult to obtain a high sensitivity by fabricating the sensor. It is considered that it is possible to adopt a closed magnetic circuit structure and adjust the thickness of the giant magnetostrictive film to increase the magnetic permeability. High sensitivity sensor.
Research indicates:
(1) Adding trace B to the four spring steels studied is the most effective for improving pitting resistance. Adding Si, Ni, Cr, Cu, Co and Sb is beneficial to improve the low alloy spring steel. Pitting resistance, on the other hand, Mo and P reduce the pitting resistance of spring steel
(2) According to the heavy regression analysis of the influence of alloying elements on the pitting corrosion resistance of low alloy spring steel, the quantitative alloy design policy of high pitting resistant spring 1 steel can be obtained.
(3) In order to improve the pitting resistance of low alloy spring steel for automobiles, it is effective to add a small amount of Ni, Cr, Co, Cu, Sb and trace B to the steel. Magnetorheological fluid MRF magnetorheological fluid (Magnetorheological Fluid, MRF for short) is a fluid that disperses magnetic particles in a liquid and is subjected to an external magnetic field to cause an increase in viscosity. This is because the magnetic particles are polarized under the action of an external magnetic field to form interlocking clusters in the liquid, whereas if the external magnetic field is removed, the magnetic particle clusters are disintegrated and returned to the original state.
Zhejiang Sealand Technology Co., Ltd. is a trustworthy manufacturer of Natural Gas Mass Flow Meter, Natural Gas Mass Flowmeter, Natural Gas Coriolis Meter, Natural Gas Coriolis Mass Flow Meter, ATEX, IECEx & CE approved.
First, Sealand meter is certified by Zhejiang Institute of Metrology. To get such certificate, Sealand has to send all models to Zhejiang Institute of Metrology and all models are tested in their calibration lab. The lab is an ISO/IEC 17025:2005 standard lab approved by CNAS (China National Accreditation Service for Conformity Assessment). CNAS is a member of ILAC (International Laboratory Accreditation Cooperation).
Second, Sealand has its own calibration lab, equipped with METTLER TOLEDO scales with accuracy 0.014% and the device extended uncertainty is 0.05%. The lab is also approved by Zhejiang Institute of Metrology. This certificate will stay valid only for one year, Zhejiang Institute of Metrology will send their professor to Sealand every year to check and make sure that the lab is qualified still and then issue new certificate. During the production, each meter will be calibrated in this lab for 3 times, each time at 5 different flow rate.
Finally, Sealand also gets ISO, CE, SIL, ATEX & IECEx. Sealand is the only Chinese brand who gets ATEX & IECEx and it is from TUV SUD ( the most authoritative institute for ATEX).
Natural Gas Mass Flow Meter, Natural Gas Mass Flowmeter, Natural Gas Coriolis Meter, Natural Gas Coriolis Mass Flow Meter
Zhejiang Sealand Technology Co., Ltd. , https://www.sealandflowmeters.com