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CA2187957A1 - Ultrasonic sensors for on-line monitoring of castings and molding processes at elevated temperatures - Google Patents

Ultrasonic sensors for on-line monitoring of castings and molding processes at elevated temperatures

Info

Publication number
CA2187957A1
CA2187957A1 CA002187957A CA2187957A CA2187957A1 CA 2187957 A1 CA2187957 A1 CA 2187957A1 CA 002187957 A CA002187957 A CA 002187957A CA 2187957 A CA2187957 A CA 2187957A CA 2187957 A1 CA2187957 A1 CA 2187957A1
Authority
CA
Canada
Prior art keywords
die
sensors
ultrasonic
elevated temperatures
line monitoring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002187957A
Other languages
French (fr)
Other versions
CA2187957C (en
Inventor
Cheng-Kuei Jen
Ky Thanh Nguyen
Bin Cao
Hao Wang
Chee Ang Loong
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
National Research Council of Canada
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CA002187957A priority Critical patent/CA2187957C/en
Publication of CA2187957A1 publication Critical patent/CA2187957A1/en
Application granted granted Critical
Publication of CA2187957C publication Critical patent/CA2187957C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/02—Analysing fluids

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Acoustics & Sound (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

Ultrasonic sensors and associated methods for on-line monitoring of material properties for die casting, molding and extrusion processes at elevated temperatures are disclosed. The sensors include the use of ultrasonic waveguides embedded in the processing machines and piezoelectric ultrasonic transducers. The sensors are operated in the reflection geometry m which one side access of the processing machines is required. The monitoring parameters are the flow front, gap development and temperature of the materials being processed and filled in the cavities of the die in casting processes and the mold in injection molding, and the temperature and viscosity of the molten polymers in the polymer extrusion machines. Piezoelectric ultrasonic transducers made of high Curie temperature materials, fabricated by sol-.gel techniques and directly deposited on top of the ultrasonic waveguides or the external walls of the shot sleeve of the die caster, die of the die caster, mold of the injection molding machine or barrel of the extruder are also used.
CA002187957A 1996-10-16 1996-10-16 Ultrasonic sensors for on-line monitoring of castings and molding processes at elevated temperatures Expired - Fee Related CA2187957C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA002187957A CA2187957C (en) 1996-10-16 1996-10-16 Ultrasonic sensors for on-line monitoring of castings and molding processes at elevated temperatures

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA002187957A CA2187957C (en) 1996-10-16 1996-10-16 Ultrasonic sensors for on-line monitoring of castings and molding processes at elevated temperatures

Publications (2)

Publication Number Publication Date
CA2187957A1 true CA2187957A1 (en) 1998-04-16
CA2187957C CA2187957C (en) 2003-06-03

Family

ID=4159089

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002187957A Expired - Fee Related CA2187957C (en) 1996-10-16 1996-10-16 Ultrasonic sensors for on-line monitoring of castings and molding processes at elevated temperatures

Country Status (1)

Country Link
CA (1) CA2187957C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6810742B2 (en) 2002-05-29 2004-11-02 Sms Meer Gmbh Method of and an apparatus for determining the speed of sound in a material
CN110455230A (en) * 2019-09-26 2019-11-15 西安热工研究院有限公司 A high-temperature pipeline perimeter online monitoring system and method

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108663311B (en) * 2018-08-24 2021-03-16 青岛科技大学 Online ultrasonic detection device and method based on thermal-oxidative aging degree of waste plastic
CN113933384A (en) * 2021-10-08 2022-01-14 哈尔滨工程大学 Ultrasonic Transducer Auxiliary for Through-beam Arrangements in Harsh Environments

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6810742B2 (en) 2002-05-29 2004-11-02 Sms Meer Gmbh Method of and an apparatus for determining the speed of sound in a material
CN110455230A (en) * 2019-09-26 2019-11-15 西安热工研究院有限公司 A high-temperature pipeline perimeter online monitoring system and method

Also Published As

Publication number Publication date
CA2187957C (en) 2003-06-03

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20131016