CN213957107U - Temperature measuring device of intercrystalline corrosion test system - Google Patents
Temperature measuring device of intercrystalline corrosion test system Download PDFInfo
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- CN213957107U CN213957107U CN202021838278.3U CN202021838278U CN213957107U CN 213957107 U CN213957107 U CN 213957107U CN 202021838278 U CN202021838278 U CN 202021838278U CN 213957107 U CN213957107 U CN 213957107U
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Abstract
The utility model relates to an intergranular corrosion test system temperature measuring device who uses in intergranular corrosion E method test system of acceptance of forge rolling or casting non-magnetic steel material, including the fixed thermocouple of T type round hole thin slice of placing in the erlenmeyer flask, the thermocouple line that is connected with T type thermocouple, T type thermocouple passes through the nylon cylindric lock and fixes on the nylon post, pass the condenser pipe and put into acidizing copper sulfate solution, the thermocouple wire sets up in thermocouple line protecting tube, thermocouple line protecting tube is the plastic tubing that has FEP Teflon coating outward, in-process heating acidizing copper sulfate solution to boiling state, accurately measure solution temperature, and is simple in structure, and is corrosion-resistant, long service life's advantage.
Description
Technical Field
The utility model belongs to the technical field of intergranular corrosion test, in particular to intergranular corrosion test system temperature measuring device who uses in the intergranular corrosion E method test system of the acceptance of forging and rolling or casting no magnetism steel material.
Background
In the acceptance of wrought or cast non-magnetic steel materials, non-magnetic steels are classified as austenitic stainless steels, and the copper-copper sulfate-sulfuric acid test, i.e., the intercrystalline corrosion E test, for determining the susceptibility of austenitic stainless steels to intergranular corrosion according to ASTM262-2015, generally comprises, in an intercrystalline corrosion E test system: a sample carrier (erlenmeyer flask, bottle mouth inserted condenser) and a heat source; the specific experimental process is as follows: samples of austenitic stainless steel were embedded in copper pellets or copper powder and placed in boiling acidified copper sulfate solution for 15 hours. This test procedure imposes severe temperature requirements on the acidified copper sulfate solution and must maintain the solution in a boiling state. To achieve the measurement of the solution temperature, generally: 1. the personnel continuously observe the state of the solution; 2. a glass thermometer indicator; 3. thermocouple or thermal resistance thermometry. The first two methods consume labor; in the latter method, the acidified copper sulfate solution is liable to corrode the thermocouple or the thermal resistor, resulting in reduced reliability and shortened life.
Disclosure of Invention
An object of the utility model is to overcome the not enough of existence among the prior art and provide a T type round hole thin slice fixed thermocouple and nylon column that adopt acidproof protection accomplish acidizing copper sulfate solution temperature measurement's intergranular corrosion test system's temperature measuring device.
In order to solve the above problem, the utility model discloses a technical scheme is:
the utility model provides an intercrystalline corrosion test system temperature measuring device, is including placing T type thermocouple in the erlenmeyer flask, the thermocouple wire that is connected with T type thermocouple, T type thermocouple passes through the nylon cylindric lock and fixes on the nylon post, and the thermocouple wire sets up in thermocouple wire protective tube, and thermocouple wire protection tube is the plastic tubing that has FEP teflon coating outward.
The nylon column is of a semi-cylindrical shape, the nylon column is made of nylon, the nylon column is 8mm in diameter and 20mm in height, a lead block is packaged at the lower portion of the semi-cylindrical shape, a through hole with the diameter of 5mm is formed in the middle of the semi-cylindrical shape, and the T-shaped thermocouple is fixed on the plane of the semi-cylindrical shape of the nylon column through the through hole by a nylon cylindrical pin with the diameter of 4 mm.
The T-shaped thermocouple is a T-shaped round hole sheet fixed thermocouple, and the measurement range is as follows: the temperature of minus 20 ℃ to 200 ℃, the sheet material is acid-resistant 304 stainless steel, the size of the sheet is 8mm multiplied by 10mm multiplied by 1mm, and a round hole with the diameter of 4mm is arranged on the sheet material.
The length of the thermocouple wire is 1 meter.
The utility model relates to an intercrystalline corrosion test technical field, the test device of intercrystalline corrosion E method of acceptance of specially adapted forging rolling or cast no magnetism steel material. The temperature measuring device can accurately measure the temperature of the acidified copper sulfate solution and has the advantages of simple structure, corrosion resistance and long service life.
Drawings
Fig. 1 is a schematic diagram of the intercrystalline corrosion E-method test temperature measuring device of the present invention.
Labeled as: 1. the thermocouple comprises a T-shaped thermocouple, 2, a thermocouple wire protection tube, 3, a nylon column, 4, a conical flask, 5, a condenser, 6, an acidified copper sulfate solution, 7 and a nylon cylindrical pin. 8 thermocouple wires.
Detailed Description
The present invention will be further explained with reference to fig. 1, but the present invention is not limited thereto.
As shown in fig. 1, the temperature measuring device of the intercrystalline corrosion test system comprises a T-shaped thermocouple 1 placed in a conical flask 4 through a condenser 5, and a thermocouple lead 8 connected with the T-shaped thermocouple 1, wherein the T-shaped thermocouple 1 is fixed on a nylon column 3 through a nylon cylindrical pin 7, a thermocouple wire 8 is arranged in a thermocouple lead protection tube 2, and the thermocouple wire protection tube 2 is a plastic tube externally provided with an FEP teflon coating.
The nylon column 3 is of a semi-cylindrical shape, is made of nylon, is 8mm in diameter and 20mm in height, a lead block is packaged at the lower part of the semi-cylindrical shape, a through hole with the diameter of 5mm is formed in the middle of the semi-cylindrical shape, and the T-shaped thermocouple 1 is fixed on the semi-cylindrical plane of the nylon column 3 by penetrating through the through hole through a nylon cylindrical pin 7 with the diameter of 4 mm.
The T-shaped thermocouple 1 is a T-shaped round hole sheet fixed thermocouple, and the measurement range is as follows: the temperature of minus 20 ℃ to 200 ℃, the sheet material is acid-resistant 304 stainless steel, the size of the sheet is 8mm multiplied by 10mm multiplied by 1mm, and a round hole with the diameter of 4mm is arranged on the sheet material. The length of the thermocouple wire 8 is 1 meter.
The thermocouple wire protection tube 2 is a plastic tube with an FEP Teflon coating outside, and completely encapsulates the thermocouple wires except the T-shaped round hole sheet fixed thermocouple sheet.
The implementation steps are as follows:
1) and fixing the T-shaped round hole sheet fixed thermocouple 1 on a nylon column 3 through a nylon cylindrical pin 7 with the diameter of 4 mm.
2) The nylon column 3 is put into a conical flask 4 along the middle hole of a condenser 5 and is immersed into the middle part of an acidified copper sulfate solution 6,
3) the acidified copper sulfate solution 6 is heated to boiling state, the T-type thermocouple 1 is stably positioned in the middle of the solution 6, and the temperature of the solution 6 is accurately measured.
4) The temperature measuring device is not limited to the nonmagnetic steel intercrystalline corrosion E method test, can be used for measuring the temperature of solution in other intercrystalline corrosion tests of austenitic stainless steel, ferritic stainless steel and the like, and meets the requirements of ASTM763-2015 ferritic stainless steel intercrystalline corrosion sensitivity detection procedures and GB/T4334-2008;
in addition to the above embodiments, the present invention has other embodiments, such as equivalent substitutions or equivalent transformations
The technical scheme who becomes all falls the utility model discloses a protection scope.
Claims (4)
1. The utility model provides an intercrystalline corrosion test system temperature measuring device, includes T type thermocouple (1) of placing in erlenmeyer flask (4), thermocouple line (8) that are connected with T type thermocouple (1), its characterized in that: the T-shaped thermocouple (1) is fixed on the nylon column (3) through a nylon cylindrical pin (7), a thermocouple wire (8) is arranged in the thermocouple wire protective tube (2), and the thermocouple wire protective tube (2) is a plastic tube with an FEP Teflon coating outside.
2. The apparatus of claim 1, wherein: the nylon column (3) is of a semi-cylindrical shape, is made of nylon, has the diameter of 8mm and the height of 20mm, a lead block is packaged at the lower part of the semi-cylindrical shape, a through hole with the diameter of 5mm is formed in the middle of the semi-cylindrical shape, and the T-shaped thermocouple (1) is fixed on the semi-cylindrical plane of the nylon column (3) by penetrating through the through hole by a nylon cylindrical pin (7) with the diameter of 4 mm.
3. The apparatus of claim 1, wherein: the T-shaped thermocouple (1) is a T-shaped round hole sheet fixed thermocouple, and the measurement range is as follows: the temperature of minus 20 ℃ to 200 ℃, the sheet material is acid-resistant 304 stainless steel, the size of the sheet is 8mm multiplied by 10mm multiplied by 1mm, and a round hole with the diameter of 4mm is arranged on the sheet material.
4. The apparatus of claim 1, wherein: the length of the thermocouple wire (8) is 1 meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021838278.3U CN213957107U (en) | 2020-08-28 | 2020-08-28 | Temperature measuring device of intercrystalline corrosion test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021838278.3U CN213957107U (en) | 2020-08-28 | 2020-08-28 | Temperature measuring device of intercrystalline corrosion test system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213957107U true CN213957107U (en) | 2021-08-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN202021838278.3U Active CN213957107U (en) | 2020-08-28 | 2020-08-28 | Temperature measuring device of intercrystalline corrosion test system |
Country Status (1)
| Country | Link |
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| CN (1) | CN213957107U (en) |
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2020
- 2020-08-28 CN CN202021838278.3U patent/CN213957107U/en active Active
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