Four-probe iron-based metal-glass magnetic-survey stressed magnetic-core sensor

A stress sensor, iron-based metal technology, applied in the direction of force measurement, the magnitude/direction of the magnetic field, etc. by measuring the change of the magnetic properties of the material caused by the applied stress. problems such as low strength, to achieve the effect of simplifying steps, reducing energy consumption, and low coercivity

Inactive Publication Date: 2014-12-10
CHINA UNIV OF MINING & TECH
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ferrite cores are usually formed by powder hot rolling, and the core strength is low and easy to be damaged; electrical pure iron or silicon steel alloy cores are usually formed by cutting, which is wasteful, complex devices are difficult to process, and are easy to corrode and rust

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Four-probe iron-based metal-glass magnetic-survey stressed magnetic-core sensor
  • Four-probe iron-based metal-glass magnetic-survey stressed magnetic-core sensor
  • Four-probe iron-based metal-glass magnetic-survey stressed magnetic-core sensor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] According to the nominal composition Fe 68 B 23 Nb 4 Y 5 (atomic percentage) to prepare the master alloy, and weigh high-purity elements Fe (99.99mass%), Nb (99.9mass%), B (99.5mass%) and Y (99.99mass%) according to the converted weight percentage. A small high-frequency induction melting furnace (VF-HMF100) produced by Makiken Co., Ltd. is used to smelt the master alloy under the protection of Ar gas. U-shaped bar with a diameter of 3mm is used figure 2The copper mold is cast. The strips were prepared by the single-roll stripping method (for comparison), and the instruments were all made by the melt rapid quenching and casting equipment (VF-RQB20) produced by Nippon Shinbi Technology Co., Ltd., the strip width was 1-1.5mm, the thickness was 20-30μm, U The two arms of the shaped rod are 15mm long, and the radius of curvature of the bottom semicircle is 0.5mm. The phase detection uses Cu target Kα radiation X-ray diffractometer (XRD, Bruker D8 Advance), and the the...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a four-probe iron-based metal-glass magnetic-survey stressed magnetic-core sensor, and belongs to magnetic-core sensors. The technical scheme includes that 1, raw materials are mixed after being weighed according to alloy components of an alloy molecular formula of Fe68B23Nb4Y5, the mixture is put into a high-frequency induction smelting furnace, the furnace is vacuumed to less than 5*10<-5>Pa and then is filled with a protective gas with the gas pressure of 600mbar, the mixture melts in a reaction furnace, steps of smelting, solidifying and turning are performed for four times, and the mixture is quickly cooled to take shape to form a mother alloy ingot; 2, the mother alloy ingot cooled to the room temperature is taken out from the smelting furnace, surface impurities are removed, the ingot is crushed into small blocks after being washed in alcohol, the small alloy blocks are put in a quartz glass tube with an opening at the lower end, the tube is vacuumed to less than 10<-3>Pa and then is filled with argon, and melted alloy liquid is sprayed into a copper mold by pressure difference to obtain a U-shaped block amorphous alloy bar. By a magnetic core of the magnetic-core sensor, accurate measurement of stress state of magnetic supporting equipment can be realized, and excitation current and energy consumption are greatly reduced.

Description

technical field [0001] The invention relates to a magnetic core sensor, in particular to a magnetic core sensor for magnetic stress measurement of four-probe iron-based metal glass. technical background [0002] Sensing technology is one of the three foundations of modern information technology, and sensors, as a tool to obtain information, are the basis of various instrumentation and automation equipment. In sensor technology, the sensitive element is the key, and its basic performance depends on the corresponding sensitive material. In the field of magnetic field detection, ferrite, electrical pure iron or silicon steel alloy have been used for a long time in the past, but each has different defects. Ferrite cores are usually formed by powder hot rolling, which has low core strength and is easily damaged; electrical pure iron or silicon steel alloy magnetic cores are usually formed by cutting, which is wasteful, difficult to process complex devices, and easy to corrode an...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & AuthorityApplications(China)
IPC IPC(8): G01L1/12G01R33/02
Inventor刘海顺杨卫明侯龙薛琳赵玉成窦林名
OwnerCHINA UNIV OF MINING & TECH