GB2289758A - Sampling vessel for thermal analysis - Google Patents

Sampling vessel for thermal analysis Download PDF

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Publication number
GB2289758A
GB2289758A GB9508068A GB9508068A GB2289758A GB 2289758 A GB2289758 A GB 2289758A GB 9508068 A GB9508068 A GB 9508068A GB 9508068 A GB9508068 A GB 9508068A GB 2289758 A GB2289758 A GB 2289758A
Authority
GB
United Kingdom
Prior art keywords
sampling
melt
vessel
cavity
thermal analysis
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
GB9508068A
Other versions
GB2289758B (en
GB9508068D0 (en
Inventor
Hidetaka Hiraoka
Mayuki Morinaka
Haruo Ishiyama
Tsuneharu Sugie
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.)
NIPPON SUBLANCE PROBE ENGINEER
Nippon Sublance Probe Engineering Ltd
Original Assignee
NIPPON SUBLANCE PROBE ENGINEER
Nippon Sublance Probe Engineering Ltd
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 NIPPON SUBLANCE PROBE ENGINEER, Nippon Sublance Probe Engineering Ltd filed Critical NIPPON SUBLANCE PROBE ENGINEER
Publication of GB9508068D0 publication Critical patent/GB9508068D0/en
Publication of GB2289758A publication Critical patent/GB2289758A/en
Application granted granted Critical
Publication of GB2289758B publication Critical patent/GB2289758B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/10—Devices for withdrawing samples in the liquid or fluent state
    • G01N1/12—Dippers; Dredgers
    • G01N1/125—Dippers; Dredgers adapted for sampling molten metals
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/20—Metals
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/20—Metals
    • G01N33/205—Metals in liquid state, e.g. molten metals

Abstract

A sampling vessel to be used for analyzing molten metals has a pair of sampling cavities 16, 18 and a sampling sump 22 separated by a first and second partition walls 14, 20 from each other. The upper surface of the first partition wall is provided with 2 first groove 26 so as to guide the melt from the first cavity 16 to the second cavity 18 and the upper surface of the second partition wall 20 is provided with a second groove 28 so as to guide excess melt in the second sampling cavity to the sump 22. <IMAGE>

Description

SAMPLING VESSEL FOR THERMAL ANALYSIS OF METAL MELTS FILED OF THE INVENTION This invention relates to sampling vessels for thermal analysis of metal melts, and more particularly to sampling vessels for determining property of molten iron or steel in performing the thermal analysis of the melt.
STATE OF ART Metallurgical structure or property of melts of cast iron or steel is usually investigated by thermal analysis of the melt at the outside of the furnace before pouring the melt in a mold.
The conventional thermal analysis of metal melts, particularly the melt of cast iron or steel, requires the use of a sampling vessel made of heat resistance material such as, for example ceramics in the shape of cup having a thermocouple connected to an automatic recorder in order to examine a cooling curve of the melt.
Hidetaka Hiraoka et al. Japanese Patent Application No. 5280664 filed on October 15, 1993 and a corresponding UK Patent Application No. 9420592.9 filed on October 12, 1994 disclose methods for inspecting the content of structure modifying additives in molten cast iron and chilling tendency of flaky graphite cast iron by using a pair of sampling vessels one of which has in its sampling vessel a small quantity of tellurium and the other sampling vessel is free of tellurium, by pouring the molten iron or steel in each of the sampling vessels to obtain two separate samples of the melt, and by comparing the cooling curves obtained from the thermal analysis of the sample in each of the vessels.
On pouring the metal melt into the sampling vessel, a constant quantity of the melt may not always filled in the vessel.
Usually, the sampling vessel was overflowed with the melt.
However, the quantity of the melt in the sampling vessel depends on the rate of pouring. If the speed for pouring the melt into the sampling vessel is low, the surface of the melt in the vessel will rise, and if the speed is high, the quantity of the melt to be poured into the vessel will insufficient.
If the quantity of the melt in each of the vessels is different from each other, this is influenced significantly to the accuracy of the thermal analysis.
If the vessel is overflowed with the melt, a portion of the melt will be spraying over the floor and will give the operator trouble.
OBJECTS OF THE INVENTION In view of the above, it is a principal object of the invention to provide a sampling vessel having a pair of sampling cavities one of which is used for thermally analysis of the melt containing tellurium and the other sampling cavity is used for thermally analyzing the melt which is free of tellurium.
It is a further object of the invention provide a sampling vessel having a pair of sampling cavities and a melt sump for preventing the excess melt from the sampling cavities to the outside of the sampling vessel.
BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a plan view of the sampling vessel of the present invention to be used for thermal analysis of metal melts; Figure 2 is a sectional view taken in the direction of the arrows substantially along the line II - II of Figure 1; and Figure 3 is a sectional view taken in the direction of the arrows substantially along the line III - III of Figure 1.
DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to the attached drawings, as shown in Figure 1, a sampling vessel 10 of the present invention is made of thermal resistant material as the same as the usual one and has a thick wall 12.
The vessel 10 is separated by a first partition wall 14 and a second partition wall 20 so as to form a pair of sampling cavities 16 and 18 and a sampling sump 22.
As in the same manner as the conventional sampling vessel, a probe 24 including a thermocouple is protruded from the bottom of each of the first and second sampling cavities 16 ; 18.
The thermocouple leads (not shown) are connected with a measuring instrument or indicator, for example a temperature recorder (not shown) which plots a cooling curve from which the freezing point of a sample of the melt can be read off.
The first partition wall 14 separates the first sampling cavity 16 from the second sampling cavity 18 and in the upper surface of the wall 14 is provided with a first groove 26 so as to guide and flow the melt poured into the first sampling cavity 16 to the second sampling cavity 18 when the first sampling cavity 16 is filled with full of the melt.
In the same manner, in the upper surface of wall 20 for separating the second sampling cavity 18 and the melt sump 22, there is provided a second groove 28 so as to guide and flow an excess melt supplied to the second sampling cavity 18 into the melt sump 22.
In order to compare the result of thermal analysis of the molten metal containing tellurium and the molten metal without containing additive, a desired amount of tellurium is placed in the first sampling cavity 16 of the vessel 10 according to the invention.
In supplying the melt into the first sampling cavity 16 continuously, the first cavity 16 is filled with the melt, and then the melt will be supplied to the second sampling cavity 18 passing through the first groove 26 to fill with it to the brim and excess melt will flow into the melt sump 22 passing through the second groove 28 formed in the upper surface of the second wall 20.
Consequently, by using the sampling vessel 10 of the present invention, it is possible to supply a constant volume of the metal melt in each of the first and second sampling cavities 16 and 18, and then the excess of the melt to be supplied to the vessel 10 is entered into the melt sump 22 so that the melt will not be scattered in all directions on the floor.

Claims (4)

1. A sampling vessel for thermal analysis of metal melts comprising a first sampling cavity and a second sampling cavity separated from each other by means of a first partition wall, a melt sump separated from these sampling cavities by means of a second partition wall, a first groove formed in the upper surface of the first partition wall so as to flow the melt from the first sampling cavity to the second sampling cavity when the first sampling cavity is filled with full of the melt and a second groove formed in the upper surface of the second partition wall so as to flow an excess melt from the second sampling cavity to the melt sump.
2. A sampling vessel for thermal analysis of metal melts substantially as herein described with reference to and as illustrated in the accompanying drawings.
3. A method for thermally analysing metal melts including using a sampling vessel according to claim 1 or 2.
4. A method for thermally analysing metal melts substantially as described herein with reference to the accompanying drawings.
GB9508068A 1994-05-24 1995-04-20 Sampling vessel for thermal analysis of metal melts Expired - Fee Related GB2289758B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1994006955U JP3004523U (en) 1994-05-24 1994-05-24 Sampling container for thermal analysis of molten metal

Publications (3)

Publication Number Publication Date
GB9508068D0 GB9508068D0 (en) 1995-06-07
GB2289758A true GB2289758A (en) 1995-11-29
GB2289758B GB2289758B (en) 1998-03-11

Family

ID=11652656

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9508068A Expired - Fee Related GB2289758B (en) 1994-05-24 1995-04-20 Sampling vessel for thermal analysis of metal melts

Country Status (6)

Country Link
JP (1) JP3004523U (en)
KR (1) KR0184720B1 (en)
CN (1) CN1076827C (en)
DE (1) DE19517953C2 (en)
GB (1) GB2289758B (en)
IT (1) IT1279151B1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000026664A2 (en) * 1998-10-29 2000-05-11 Ferstol Invest And Trade Inc Assaying
EP1925936A1 (en) * 2006-11-24 2008-05-28 SinterCast AB New thermal analysis device
EP3035050A1 (en) * 2014-12-16 2016-06-22 SinterCast AB A sampling device for thermal analysis

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2737722B2 (en) * 1995-10-05 1998-04-08 王子製紙株式会社 Packaging container
JP3465898B2 (en) 2001-09-04 2003-11-10 株式会社佑和 Sampling container for thermal analysis of molten metal
DE10209427B4 (en) * 2002-03-05 2006-01-26 Uwe Kühn Sample vessel for analysis of melts
CN103335866B (en) * 2013-07-23 2016-10-05 江铃汽车股份有限公司 A kind of combined hot analytical sampling cup
CN105004749B (en) * 2015-07-03 2017-07-11 浙江大学 Solid-liquid phase change material melting heat transfer performance parameter testing system and its method

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3946594A (en) * 1973-10-02 1976-03-30 Electro-Nite Co. Disposable phase change device

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2395254A (en) * 1944-08-18 1946-02-19 Internat Mechanite Metal Compa Apparatus for the determination of the fluidity of molten metals
PL149360B1 (en) * 1985-10-31 1990-02-28 Inst Odlewnictwa Apparatus for predicing as-solidified structure of casting alloys in particular cast iron spheroidization degree
JP2510947B2 (en) * 1993-10-15 1996-06-26 有限会社日本サブランスプローブエンジニアリング Method for discriminating presence / absence of spheroidizing agent or CV agent in molten cast iron and chilling tendency of flake graphite cast iron, and sampling container used therefor

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3946594A (en) * 1973-10-02 1976-03-30 Electro-Nite Co. Disposable phase change device

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000026664A2 (en) * 1998-10-29 2000-05-11 Ferstol Invest And Trade Inc Assaying
WO2000026664A3 (en) * 1998-10-29 2000-08-31 Willem Hendrik Brits Assaying
AU770839B2 (en) * 1998-10-29 2004-03-04 Fls Automation South Africa (Proprietary) Limited Assaying
US7025936B1 (en) * 1998-10-29 2006-04-11 Fls Automation South Africa (Proprietary) Limited Method and apparatus for preparing a sample for analysis of precious metal content
AP1725A (en) * 1998-10-29 2007-02-28 Ferstol Invest And Trade Inc A receptacle for use in a method of assaying an ore sample
EP1925936A1 (en) * 2006-11-24 2008-05-28 SinterCast AB New thermal analysis device
WO2008062065A1 (en) * 2006-11-24 2008-05-29 Sintercast Ab New thermal analysis device
EP3035050A1 (en) * 2014-12-16 2016-06-22 SinterCast AB A sampling device for thermal analysis

Also Published As

Publication number Publication date
IT1279151B1 (en) 1997-12-04
ITTO950339A1 (en) 1996-10-28
GB2289758B (en) 1998-03-11
KR0184720B1 (en) 1999-05-15
GB9508068D0 (en) 1995-06-07
KR950033467A (en) 1995-12-26
DE19517953A1 (en) 1995-11-30
ITTO950339A0 (en) 1995-04-28
CN1076827C (en) 2001-12-26
DE19517953C2 (en) 2000-07-13
CN1126317A (en) 1996-07-10
JP3004523U (en) 1994-11-22

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PCNP Patent ceased through non-payment of renewal fee

Effective date: 20060420