CN110567817A - Test tool and method for platinum and platinum alloy under high-temperature condition - Google Patents
Test tool and method for platinum and platinum alloy under high-temperature condition Download PDFInfo
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- CN110567817A CN110567817A CN201910814594.2A CN201910814594A CN110567817A CN 110567817 A CN110567817 A CN 110567817A CN 201910814594 A CN201910814594 A CN 201910814594A CN 110567817 A CN110567817 A CN 110567817A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/14—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by dead weight, e.g. pendulum; generated by springs tension
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/18—Performing tests at high or low temperatures
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0032—Generation of the force using mechanical means
- G01N2203/0033—Weight
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/0222—Temperature
- G01N2203/0226—High temperature; Heating means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/026—Specifications of the specimen
- G01N2203/0262—Shape of the specimen
- G01N2203/0278—Thin specimens
- G01N2203/028—One dimensional, e.g. filaments, wires, ropes or cables
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Abstract
The invention relates to a test tool and a test method for platinum and platinum alloy under a high-temperature condition, and belongs to the technical field of metal materials. The platinum and platinum alloy wires directly horizontally penetrate through an inner container of a high-temperature furnace, weights with equal weight are hung at two ends of the platinum and platinum alloy wires, the platinum and platinum alloy wires are gradually stretched in a high-temperature environment under the action of the gravity of the weights until the platinum and platinum alloy wires are broken, a timing sensor is used for recording the high-temperature endurance time of the platinum and platinum alloy wires, and a high-precision measuring ruler is used for measuring the high-temperature creep elongation of the platinum and platinum alloy wires. Compared with the existing high-temperature stretching equipment, the method has the advantages of simple operation, convenient replacement of the detection sample, small temperature control fluctuation range, high safety and the like.
Description
Technical Field
the invention relates to a test tool and a test method for platinum and platinum alloy under a high-temperature condition, and belongs to the technical field of metal materials.
Background
the plastic deformation phenomenon of platinum and platinum alloy materials slowly generated under the long-time action of constant temperature and constant load is creep deformation. Under the high-temperature condition, time is an important influence factor influencing the creep property of platinum and platinum alloys, the influence of the normal-temperature condition on the creep property of the platinum and platinum alloys is basically negligible, but the influence of the time effect on the creep property of the platinum and platinum alloys under the high-temperature condition is gradually highlighted along with the increase of the temperature. The high-temperature tensile property of the platinum and the platinum alloy can be reflected under a high temperature condition due to the high service temperature of the platinum and the platinum alloy, so that the detection of the high-temperature tensile property of the platinum and the platinum alloy material puts higher requirements on the safety and reliability of a bearing member of high-temperature tensile equipment. Investigation finds that most of high-temperature stretching equipment bearing members capable of meeting the requirements of platinum and platinum alloy fail due to overhigh temperature in the stretching process, and due to the fact that platinum and platinum alloy belong to noble metals, accidental damage of the bearing members in the detection process can bring about great economic loss and catastrophic serious consequences.
Disclosure of Invention
The invention aims to overcome the defects and provides a test tool and a test method for platinum and platinum alloy under a high-temperature condition, so that economic loss caused by accidental damage of a bearing member under the high-temperature condition can be avoided, the obtained measurement result can effectively reflect the high-temperature endurance time and creep elongation of the platinum and platinum alloy, and the test tool and the test method have the advantages of simple method operation, convenience in replacing a detection sample, small temperature control fluctuation range, high safety and the like.
The technical scheme of the invention is that the tool for testing the lasting time and creep elongation of platinum and platinum alloy under the high-temperature condition comprises a high-temperature furnace, an alumina tube, a fixed pulley, a platinum and platinum alloy wire sample to be tested, a weight and a timing sensor; a plurality of alumina tubes are arranged in the high-temperature furnace, samples of platinum and platinum alloy wires to be detected are arranged in the alumina tubes, and weights are connected to two sides of the samples of the platinum and the platinum alloy wires to be detected through fixed pulleys; the timing sensor is arranged below the weight at the corresponding position.
The method for testing the endurance time and creep elongation of platinum and platinum alloy under the high-temperature condition comprises the following steps:
(1) Heating a high-temperature furnace: placing a plurality of equal-length alumina tubes in a high-temperature furnace, and placing a test sample in each alumina tube; the high-temperature furnace is heated to a preset temperature, and the temperature fluctuation of the highest temperature zone meets the requirement;
(2) Preparing a sample: taking platinum, platinum and platinum alloy wires, wherein the diameter of the wires is smaller than that of the hollow alumina tube in the step (1);
(3) Pipe penetration: enabling the platinum and platinum alloy wires in the step (2) to pass through the hollow alumina tube in the step (1), wherein the balance of the platinum and platinum alloy wires at two ends of the alumina tube is equal;
(4) Hanging weights at two ends: respectively hooking platinum and platinum alloy wires extending out of the alumina tube by using a wire rope, allowing the wire rope to droop without resistance through a pulley, and fixing a weight at the other end of the wire rope;
(5) Installing a timing sensor: placing a timing sensor below one end of the weight in the step (4) for monitoring the high-temperature lasting time of the platinum and the platinum alloy wire;
(6) Measurement of creep elongation: and (3) respectively measuring two sections of fracture lengths of the platinum and platinum alloy wires fractured in the step (5), adding and summing, and subtracting the original lengths of the platinum and platinum alloy wires in the step (2) to obtain a difference value, namely the creep elongation of the platinum and platinum alloy wires.
Further, the alumina tube in the step (1) is a hollow alumina tube, the inner diameter is 6-10mm, the length is 700-900mm, and the number of the alumina tubes is 1-4.
further, the length of the platinum and platinum alloy wires in the step (2) is 1 ~ 1.5m, the diameter is 0.3 ~ 0.8mm, the length is 1 ~ 1.5m, and the number of the platinum and platinum alloy wires is consistent with the number of the aluminum oxide tubes.
Further, the uniform temperature field of the high-temperature area of the high-temperature furnace in the step (2) is not less than 20mm, the temperature of the furnace can be raised to 1000-1600 ℃, and the temperature is kept for 5-10 min.
Furthermore, in the step (3), the centers of the platinum and platinum alloy wires are positioned in the uniform temperature field of the high-temperature furnace, and the margins of the two ends of the platinum and platinum alloy wires exposed out of the alumina tube are equal.
Further, the weight of the platinum and platinum alloy wires suspended at the two ends in the step (4) is 100-300 g.
Further, the timing sensor is placed at a position which can be sensed when the weight suspended by the wire rope falls down in the step (5); the timing sensor is located in the container vertically below the hanging weight.
Further, the measuring tool in the step (6) is a fixed length device with the measuring precision being less than or equal to 0.1 mm.
according to the invention, the platinum and platinum alloy measurement sample horizontally passes through the high ~ temperature furnace, and weights are hung at two ends of a normal ~ temperature region of the measurement sample, so that the measurement sample can pass through a uniform temperature field part of the furnace, the (1000 ~ 1600) DEG C high ~ temperature measurement is realized, and the economic loss caused by the damage of a bearing component under the high ~ temperature condition can be avoided.
The invention has the beneficial effects that: the invention has small temperature fluctuation during high-temperature measurement, and the obtained measurement result not only can effectively reflect the high-temperature endurance time and creep elongation of platinum and platinum alloy, but also has the advantages of simple method operation, convenient replacement of detection samples, high safety and the like.
Drawings
FIG. 1 is a schematic diagram of an apparatus for high temperature endurance time and creep elongation for platinum and platinum alloys.
FIG. 2 is a schematic cross-sectional view of the inside of the high-temperature furnace.
Description of reference numerals: 1. a high temperature furnace; 2. an alumina tube; 3. a fixed pulley, 4, a platinum and platinum alloy wire sample to be detected; 5. a weight; 6. a timing sensor; 7. high temperature furnace courage.
Detailed Description
Example 1 test tool for platinum and platinum alloys under high temperature conditions
As shown in fig. 1, the device specifically comprises a high-temperature furnace 1, an alumina tube 2, a fixed pulley 3, a platinum and platinum alloy wire sample to be measured 4, a weight 5 and a timing sensor 6; a plurality of alumina tubes 2 are arranged in the high-temperature furnace 1, a platinum and platinum alloy wire sample 4 to be detected is arranged in the alumina tubes 2, and two sides of the platinum and platinum alloy wire sample 4 to be detected are connected with weights 5 through fixed pulleys 3; the timing sensor 6 is disposed below the weight 5 at a corresponding position.
A plurality of alumina tubes 2 are arranged in a high-temperature furnace pipe 7 in the high-temperature furnace 1, and a platinum and platinum alloy wire sample 4 to be detected is arranged in the alumina tubes 2.
Example 2
The test tool assembly is as shown in example 1.
(1) Heating a high-temperature furnace: the temperature of the high-temperature furnace is raised to 1000 ℃, the temperature fluctuation of the highest temperature zone is +/-1 ℃, and the temperature is kept for 5 min.
(2) Preparing a sample: 1 Pt wire with the diameter of 0.3mm and the length of 1m is taken and numbered 1 #.
(3) Pipe penetration: horizontally penetrating the Pt wire obtained in the step (2) through a corundum tube with the length of 800mm in a high-temperature furnace, wherein the number of the corundum tube is No. 1, and the two end parts of the Pt wire which are leaked out of the outer side of the corundum tube are equal.
(4) hanging weights at two ends: and (4) respectively hooking two ends of the platinum wire penetrating through the corundum tube obtained in the step (3) with a wire rope, and fixing a weight with the weight of 100g at the other end of the wire rope.
(5) Installing a timing sensor: suspending the weight by a wire rope through a pulley, and starting timing at the moment of suspending until the Pt wire is broken.
(6) Measurement of creep elongation: repeating the operation for four times, and recording the high-temperature endurance time of 4 Pt wires as 1min2s, 45s, 1min20s and 1min12s respectively; creep elongation amounts were 5.0mm, 4.0mm, 6.0mm, and 5.5mm, respectively.
Example 3
The test tool assembly is as shown in example 1.
(1) Heating a high-temperature furnace: heating the high temperature furnace to 1400 ℃, keeping the temperature of the highest temperature zone at the constant temperature for 10min, wherein the temperature fluctuation is +/-1 ℃.
(2) preparing samples, namely taking 2 Pt wires with the diameter of 0.5mm and the length of 1m, and numbering the Pt wires from # 1 to # 2 respectively.
(3) and (3) pipe penetration, namely horizontally penetrating the Pt wires obtained in the step (2) through 2 corundum pipes with the length of 800mm in a high-temperature furnace, wherein the corundum pipes are numbered from 1# ~ 2# respectively.
(4) Hanging weights at two ends: and (4) respectively hooking two ends of the Pt wire penetrating through the corundum tube obtained in the step (3) with a wire rope, and fixing a weight with the weight of 200g at the other end of the wire rope.
(5) Installing a timing sensor: placing a timing sensor below one end of the weight in the step (4) for monitoring the high-temperature lasting time of the platinum and the platinum alloy wire; suspending the weight by a wire rope through a pulley, and starting timing at the moment of suspending until the Pt wire is broken.
(6) Measurement of creep elongation: repeating the above operations twice, and recording the high-temperature endurance time of 4 tested samples as 3min14s, 1min50s, 2min51s and 1min27s respectively; creep elongation amounts of 12.5mm, 10.0mm, 17.0mm and 13.0mm respectively;
Example 4
The test tool assembly is as shown in example 1.
(1) Heating a high-temperature furnace: heating the high temperature furnace to 1400 ℃, keeping the temperature of the highest temperature zone at the constant temperature for 10min, wherein the temperature fluctuation is +/-1 ℃.
(2) preparing samples, namely taking four Pt ~ Zr alloy wires with the diameter of 0.5mm and the length of 1m, and numbering 1# ~ 4 #.
(3) and (3) pipe penetration, namely horizontally penetrating the Pt-Zr alloy wires obtained in the step (2) through 4 corundum pipes with the length of 800mm in a high-temperature furnace, wherein the corundum pipes are numbered from 1# ~ 4# respectively.
(4) Hanging weights at two ends: and (4) respectively hooking two ends of the Pt-Zr alloy wire penetrating through the corundum tube obtained in the step (3) with a wire rope, and fixing a weight with the weight of 200g at the other end of the wire rope.
(5) Installing a timing sensor: placing a timing sensor below one end of the weight in the step (4) for monitoring the high-temperature lasting time of the platinum and the platinum alloy wire; suspending the weight by a wire rope through a pulley, and starting timing at the moment of suspending until the Pt-Zr alloy wire is broken.
(6) Measurement of creep elongation: recording the high-temperature endurance time of 4 tested samples as 30h40min, 20h55min, 43h57min and 21h53min respectively; creep elongation amounts were 3.0mm, 3.0mm, 1.0mm, and 4.0mm, respectively.
Example 5
The test tool assembly is as shown in example 1.
(1) Heating a high-temperature furnace: heating the high temperature furnace to 1400 ℃, keeping the temperature of the highest temperature zone at the constant temperature for 10min, wherein the temperature fluctuation is +/-1 ℃.
(2) preparing samples, namely taking four Pt-Rh-Zr alloy wires with the diameter of 0.5mm and the length of 1m, and numbering the Pt-Rh-Zr alloy wires from # 1 to # 4 respectively.
(3) and (3) pipe penetration, namely horizontally penetrating the Pt-Rh-Zr alloy wires obtained in the step (2) through four corundum pipes with the length of 800mm in a high-temperature furnace, wherein the corundum pipes are numbered from 1# ~ 4# respectively.
(4) Hanging weights at two ends: and (4) respectively hooking two ends of the Pt-Rh-Zr alloy wire penetrating through the corundum tube obtained in the step (3) with a wire rope, and fixing a weight with the weight of 200g at the other end of the wire rope.
(5) Installing a timing sensor: placing a timing sensor below one end of the weight in the step (4) for monitoring the high-temperature lasting time of the platinum and the platinum alloy wire; suspending the weight by a wire rope through a pulley, and starting timing at the moment of suspending until the Pt-Rh-Zr alloy wire is broken.
(6) measurement of creep elongation: recording the high-temperature endurance time of the 4 tested samples as 29 hours, 39 minutes, 32 hours, 56 minutes, 33 hours, 05 minutes and 35 hours, 01 minutes respectively; creep elongation amounts of 2.0mm, 1.0mm, 4.0mm and 3.0mm respectively;
Example 6
The test tool assembly is as shown in example 1.
(1) Heating a high-temperature furnace: heating the high temperature furnace to 1400 ℃, keeping the temperature of the highest temperature zone at the constant temperature for 10min, wherein the temperature fluctuation is +/-1 ℃.
(2) preparing samples, namely taking four Pt-Pd-Rh alloy wires with the diameter of 0.5mm and the length of 1m, and numbering the Pt-Pd-Rh alloy wires from # 1 to # 4 respectively.
(3) and (3) pipe penetration, namely horizontally penetrating the Pt-Pd-Rh alloy wires obtained in the step (2) through four corundum pipes with the length of 800mm in a high-temperature furnace, wherein the corundum pipes are numbered from 1# ~ 4# respectively.
(4) Hanging weights at two ends: and (4) respectively hooking two ends of the Pt-Pd-Rh alloy wire penetrating through the corundum tube obtained in the step (3) with a wire rope, and fixing a weight with the weight of 200g at the other end of the wire rope.
(5) Installing a timing sensor: placing a timing sensor below one end of the weight in the step (4) for monitoring the high-temperature lasting time of the platinum and the platinum alloy wire; suspending the weight by a wire rope through a pulley, and starting timing at the moment of suspending until the Pt-Pd-Rh alloy wire is broken.
(6) measurement of creep elongation: recording the high-temperature endurance time of 4 tested samples as 16h10min, 13h40min, 14h30min and 15h01min respectively; creep elongation amounts were 9.0mm, 6.0mm, 8.0mm, and 8.3mm, respectively.
Example 7
The test tool assembly is as shown in example 1.
(1) Heating a high-temperature furnace: heating the high temperature furnace to 1400 ℃, keeping the temperature of the highest temperature zone at the constant temperature for 10min, wherein the temperature fluctuation is +/-1 ℃.
(2) preparing samples, namely taking four Pt-Ir-Rh alloy wires with the diameter of 0.5mm and the length of 1m, and numbering the wires from # 1 to # 4 respectively.
(3) and (3) pipe penetration, namely horizontally penetrating the Pt-Ir-Rh alloy wires obtained in the step (2) through four corundum pipes with the length of 800mm in a high-temperature furnace, wherein the corundum pipes are numbered from 1# ~ 4# respectively.
(4) Hanging weights at two ends: and (4) respectively hooking two ends of the Pt-Ir-Rh alloy wire penetrating through the corundum tube obtained in the step (3) with a wire rope, and fixing a weight with the weight of 200g at the other end of the wire rope.
(5) Installing a timing sensor: placing a timing sensor below one end of the weight in the step (4) for monitoring the high-temperature lasting time of the platinum and the platinum alloy wire; suspending the weight by a wire rope through a pulley, and starting timing at the moment of suspending until the Pt-Ir-Rh alloy wire is broken.
(6) Measurement of creep elongation: recording the high-temperature endurance time of 4 tested samples as 42h25min, 43h10min, 43h30min and 45h24min respectively; the creep elongation amounts were 2.0mm, 2.0mm, 1.0mm, and 3.0mm, respectively.
Example 8
The test tool assembly is as shown in example 1.
(1) Heating a high-temperature furnace: and (3) heating the high-temperature furnace to 1600 ℃, keeping the temperature for 10min at the highest temperature zone with the fluctuation of +/-1 ℃.
(2) preparing samples, namely taking four Pt ~ Rh ~ Zr alloy wires with the diameter of 0.8mm and the length of 1m, and numbering 1# ~ 4# respectively.
(3) and (3) pipe penetration, namely horizontally penetrating the Pt-Rh-Zr alloy wires obtained in the step (2) through four corundum pipes with the length of 800mm in a high-temperature furnace, wherein the corundum pipes are numbered from 1# ~ 4# respectively.
(4) Hanging weights at two ends: and (4) respectively hooking two ends of the Pt-Rh-Zr alloy wire penetrating through the corundum tube obtained in the step (3) with a wire rope, and fixing a weight with the weight of 300g at the other end of the wire rope.
(5) Installing a timing sensor: placing a timing sensor below one end of the weight in the step (4) for monitoring the high-temperature lasting time of the platinum and the platinum alloy wire; suspending the weight by a wire rope through a pulley, and starting timing at the moment of suspending until the Pt-Rh-Zr alloy wire is broken.
(6) Measurement of creep elongation: recording the high-temperature endurance time of 4 tested samples as 50h45min, 51h20min, 52h30min and 50h30min respectively; creep elongation amounts were 2.0mm, 3.0mm, 4.0mm, and 2.0mm, respectively.
Example 9
The test tool assembly is as shown in example 1.
(1) Heating a high-temperature furnace: and (3) heating the high-temperature furnace to 1600 ℃, keeping the temperature for 10min at the highest temperature zone with the fluctuation of +/-1 ℃.
(2) preparing samples, namely taking four Pt-Pd-Rh alloy wires with the diameter of 0.8mm and the length of 1m, and numbering the Pt-Pd-Rh alloy wires from # 1 to # 4 respectively.
(3) and (3) pipe penetration, namely horizontally penetrating the Pt-Pd-Rh alloy wires obtained in the step (2) through four corundum pipes with the length of 800mm in a high-temperature furnace, wherein the corundum pipes are numbered from 1# ~ 4# respectively.
(4) Hanging weights at two ends: and (4) respectively hooking two ends of the Pt-Pd-Rh alloy wire penetrating through the corundum tube obtained in the step (3) with a wire rope, and fixing a weight with the weight of 300g at the other end of the wire rope.
(5) Installing a timing sensor: placing a timing sensor below one end of the weight in the step (4) for monitoring the high-temperature lasting time of the platinum and the platinum alloy wire; suspending the weight by a wire rope through a pulley, and starting timing at the moment of suspending until the Pt-Pd-Rh alloy wire is broken.
(6) Measurement of creep elongation: recording the high-temperature endurance time of 4 tested samples as 48h04min, 49h20min, 40h50min and 41h30min respectively; the creep elongation amounts were 2.0mm, 2.0mm, 2.0mm, and 3.0mm, respectively.
Example 10
The test tool assembly is as shown in example 1.
(1) Heating a high-temperature furnace: and (3) heating the high-temperature furnace to 1600 ℃, keeping the temperature for 10min at the highest temperature zone with the fluctuation of +/-1 ℃.
(2) preparing samples, namely taking four Pt-Ir-Rh alloy wires with the diameter of 0.8mm and the length of 1m, and numbering the wires from # 1 to # 4 respectively.
(3) and (3) pipe penetration, namely horizontally penetrating the Pt-Ir-Rh alloy wires obtained in the step (2) through four corundum pipes with the length of 800mm in a high-temperature furnace, wherein the corundum pipes are numbered from 1# ~ 4# respectively.
(4) Hanging weights at two ends: and (4) respectively hooking two ends of the Pt-Ir-Rh alloy wire penetrating through the corundum tube obtained in the step (3) with a wire rope, and fixing a weight with the weight of 300g at the other end of the wire rope.
(5) Installing a timing sensor: placing a timing sensor below one end of the weight in the step (4) for monitoring the high-temperature lasting time of the platinum and the platinum alloy wire; suspending the weight by a wire rope through a pulley, and starting timing at the moment of suspending until the Pt-Ir-Rh alloy wire is broken.
(6) measurement of creep elongation: recording the high-temperature endurance time of the 4 tested samples as 69h56min, 68h50min, 61h50min and 63h31min respectively; the creep elongation amounts were 6.0mm, 3.0mm, 3.0mm, and 2.0mm, respectively.
Claims (9)
1. The test method of platinum and platinum alloy under high temperature condition is characterized by comprising the following steps: the method is used for the endurance time and creep elongation of platinum and platinum alloy under the high-temperature condition, and comprises the following specific steps:
(1) heating a high-temperature furnace: placing a plurality of equal-length alumina tubes in a high-temperature furnace, and placing a test sample in each alumina tube; the high-temperature furnace is heated to a preset temperature, and the temperature fluctuation of the highest temperature zone meets the requirement;
(2) Preparing a sample: taking platinum, platinum and platinum alloy wires, wherein the diameter of the wires is smaller than that of the hollow alumina tube in the step (1);
(3) Pipe penetration: enabling the platinum and platinum alloy wires in the step (2) to pass through the hollow alumina tube in the step (1), wherein the balance of the platinum and platinum alloy wires at two ends of the alumina tube is equal;
(4) Hanging weights at two ends: respectively hooking platinum and platinum alloy wires extending out of the alumina tube by using a wire rope, allowing the wire rope to droop without resistance through a pulley, and fixing a weight at the other end of the wire rope;
(5) Installing a timing sensor: placing a timing sensor below one end of the weight in the step (4) for monitoring the high-temperature lasting time of the platinum and the platinum alloy wire;
(6) Measurement of creep elongation: and (3) respectively measuring two sections of fracture lengths of the platinum and platinum alloy wires fractured in the step (5), adding and summing, and subtracting the original lengths of the platinum and platinum alloy wires in the step (2) to obtain a difference value, namely the creep elongation of the platinum and platinum alloy wires.
2. The method for testing platinum and platinum alloys according to claim 1, wherein the test method comprises the following steps: the alumina tube in the step (1) is a hollow alumina tube, the inner diameter is 6-10mm, the length is 700-900mm, and the number of the alumina tubes is 1-4.
3. the method for testing platinum and platinum alloys according ~ claim 1, wherein the wires of platinum and platinum alloys of step (2) have a length of 1 ~ 1.5m, a diameter of 0.3 ~ 0.8mm, a length of 1 ~ 1.5m, and the number of the wires is the same as the number of the aluminum oxide tubes.
4. The method for testing platinum and platinum alloys according to claim 1, wherein the test method comprises the following steps: and (3) the uniform temperature field of the high-temperature area of the high-temperature furnace in the step (2) is not less than 20mm, the furnace temperature can be raised to 1000-1600 ℃, and the temperature is kept for 5-10 min.
5. The method for testing platinum and platinum alloys according to claim 1, wherein the test method comprises the following steps: in the step (3), the centers of the platinum and platinum alloy wires are positioned in the uniform temperature field of the high-temperature furnace, and the margins of the two ends of the platinum and platinum alloy wires exposed out of the alumina tube are equal.
6. the method for testing platinum and platinum alloys according to claim 1, wherein the test method comprises the following steps: and (4) the weight of the platinum and platinum alloy wires suspended at the two ends is 100-300 g.
7. The method for testing platinum and platinum alloys according to claim 1, wherein the test method comprises the following steps: the timing sensor is placed at a position where a weight suspended by a wire rope can be sensed when falling down; the timing sensor is located in the container vertically below the hanging weight.
8. The method for testing platinum and platinum alloys according to claim 1, wherein the test method comprises the following steps: the measuring tool in the step (6) is a fixed length device with the measuring precision less than or equal to 0.1 mm.
9. The test tool for platinum and platinum alloy under high temperature condition is characterized in that: comprises a high-temperature furnace (1), an alumina tube (2), a fixed pulley (3), a platinum and platinum alloy wire sample to be measured (4), a weight (5) and a timing sensor (6); a plurality of alumina tubes (2) are arranged in the high-temperature furnace (1), a platinum and platinum alloy wire sample (4) to be detected is arranged in each alumina tube (2), and two sides of each platinum and platinum alloy wire sample (4) to be detected are connected with weights (5) through fixed pulleys (3); the timing sensor (6) is arranged below the weight (5) at the corresponding position.
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Address after: Xishan District Beizhen Jiangsu province 214192 new Tin Village in Wuxi City Applicant after: Intel platinum Co.,Ltd. Address before: 214194 No. 66, Jinghong Road, Xibei Town, Xishan District, Wuxi City, Jiangsu Province Applicant before: WUXI INTERNATIONAL PLATINUM Co.,Ltd. |
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Application publication date: 20191213 |