CN1444039A - New method for measuring alloy boiling point-method of loss of weight - Google Patents
New method for measuring alloy boiling point-method of loss of weight Download PDFInfo
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- CN1444039A CN1444039A CN 03111492 CN03111492A CN1444039A CN 1444039 A CN1444039 A CN 1444039A CN 03111492 CN03111492 CN 03111492 CN 03111492 A CN03111492 A CN 03111492A CN 1444039 A CN1444039 A CN 1444039A
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- alloy
- weight
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- temperature
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- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 36
- 239000000956 alloy Substances 0.000 title claims abstract description 36
- 238000009835 boiling Methods 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 13
- 208000020442 loss of weight Diseases 0.000 title 1
- 238000001704 evaporation Methods 0.000 claims description 23
- 230000008020 evaporation Effects 0.000 claims description 21
- 208000016261 weight loss Diseases 0.000 claims description 17
- 230000004580 weight loss Effects 0.000 claims description 15
- 239000007788 liquid Substances 0.000 claims description 2
- 230000035772 mutation Effects 0.000 claims description 2
- 229910052573 porcelain Inorganic materials 0.000 abstract description 21
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 abstract description 16
- 229910052786 argon Inorganic materials 0.000 abstract description 8
- 239000000843 powder Substances 0.000 abstract description 5
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 238000005303 weighing Methods 0.000 abstract description 3
- 238000001816 cooling Methods 0.000 abstract 1
- 235000013312 flour Nutrition 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 238000003466 welding Methods 0.000 description 6
- 229910000861 Mg alloy Inorganic materials 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 229910000914 Mn alloy Inorganic materials 0.000 description 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 3
- 229910052749 magnesium Inorganic materials 0.000 description 3
- 239000011777 magnesium Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000007789 gas Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The method for measuring alloy property boiling point-weight has method adopted the following steps: using precision balance to weight small quantity of tested alloy powder, placing the alloy powder into a porcelain boat, weighing total weight of alloy powder and porcelain boat, placing them into a porcelain pipe in high-temp. furnace, under the condition of argon protection and constant pressure quickly-heating to predefined temp., heat-insualting for 10-30 min., then quickly-cooling to room temp., then weight the total weight of porcelain boat and residual alloy powder and resolving evaporated quantity, according to the evaporated loss weight quantity measured at several temp. points calcualting evaporated loss weight percentage content and drawing temp.-evaporated percentage content curve.
Description
Technical field
The invention belongs to metal engineering made technical field, particularly the method for testing of alloy property boiling point.
Background technology
Magnesium alloy is the lightest structured material of present proportion, its specific strength, specific stiffness height, and damping property is good, has been widely used in fields such as Aero-Space, automobile making, communication, optical instrument and computing machine manufacturing.The welding fabrication method is used widely in magnesium alloy component.Yet magnesium also exists some shortcomings restricting its development on performance, and as easy oxidizing fire in air, this makes magnesium alloy component bring very big problem when welding processing.Burning owing to magnesium in the welding process is evaporated, and causes the weld metal zone composition to change, and makes the weld metal zone different with composition, tissue, the performance of matrix, causes the weld metal zone to become the weak link of total.Therefore, be badly in need of a kind of high boiling magnesium alloy welding rod material of exploitation, the burning evaporation of its magnesium in welding process is suppressed, change to reduce the weld metal zone composition, keep design mix as far as possible, make composition, tissue, the performance basically identical of it and matrix, to guarantee the quality of whole weld assembly.In order to develop high boiling magnesium alloy welding rod material, and lack the effective ways that the alloy boiling point is measured at present, just need a kind of alloy boiling point method of testing of exploitation.
Summary of the invention
Purpose of the present invention:
Alloy liquid is not when reaching boiling point under the high temperature, and evaporation capacity is less, just can produce the situation that sudden change appears in a large amount of evaporation evaporation capacity when only reaching boiling point.According to the evaporation capacity of measuring under the different temperatures, find the catastrophe point of a large amount of evaporations, determine the boiling point of alloy, it is this that method is simple.Simultaneously, it has solved the problem that still can't measure the alloy boiling point so far.
Realize technical scheme of the present invention:
Tested alloy sample is drilled through break flour; take by weighing the alloy break flour of some with precision balance; be placed in the porcelain boat of having dried; note the general assembly (TW) (M1) of this moment porcelain boat and alloy break flour; again it is put into the high temperature furnace porcelain tube; feed high-purity argon gas; after air drains in the porcelain tube; keep argon flow amount under 1-2L/min, be heated to predetermined temperature rapidly, and after keeping 10-30 minute under this temperature, stop heating; continuation is cooled to room temperature rapidly under argon shield; take out porcelain boat, weigh up porcelain boat and the weight (M2) that remains the alloy bits with precision balance, the evaporation capacity of alloy is C (C=M1-M2).Get some parts of alloy samples, make corresponding evaporation weight loss at the different temperatures place as stated above, calculate alloy percent weight loss content.According to each temperature spot and corresponding evaporation percent weight loss content, draw out temperature again---the evaporation percent weight loss contains discharge curve, finds out the pairing temperature of catastrophe point of alloy evaporation capacity, is the boiling point of alloy.
Effect of the present invention and benefit:
Because the present boiling point method of testing of simple metal element, equipment complexity, operating difficulties, and be not suitable for the measurement of alloy boiling point, the present invention has filled up the blank in this field, solved the problems of measurement of alloy boiling point, and this method is simple and easy to do.
Description of drawings
Fig. 1 is the vaporising device synoptic diagram of weight-loss method beta alloy boiling point.
Among the figure, (1) air intake opening can feed high purity argon, (2) porcelain tube, (3) high temperature combustion furnace, (4) thermopair, (5) porcelain boat.
Fig. 2 is the temperature-evaporation percent weight loss content curve map of Mg-Mn (2.1%) alloy.
Among the figure, horizontal ordinate be temperature (℃), ordinate be the evaporation percent weight loss content (%).
Embodiment
Be described in detail realization most preferred embodiment of the present invention below in conjunction with accompanying drawing.
The step 1. pair Mg-Mn alloy ingot bar that has melted drills through break flour.
Step 2. takes by weighing Mg-Mn alloy break flour 0.2 gram on FA1004 type electronic balance, put into the porcelain boat (5) of having dried, and weigh up the general assembly (TW) (M1) of alloyed powder and porcelain boat (5).
Step 3. will be equipped with the porcelain boat (5) of alloy break flour; place in the porcelain tube (2) of high temperature furnace (3); feed high-purity argon gas from air intake opening (1) toward porcelain tube (2), air drains in porcelain tube (2), keeps argon flow amount under 1-2L/min; high temperature furnace (3) is heating rapidly; after reaching predetermined temperature, be incubated 10 minutes, stop heating then; under argon shield, make porcelain boat (5) reduce to room temperature fast with high temperature furnace (3).
Step 4. is taken out porcelain boat (5), claims the weight (M2) of porcelain boat (5) and residue alloy break flour again.
Step 5. is obtained evaporation weight loss C (C=M1-M2), calculates evaporation percent weight loss content: (C ÷ 0.2) * 100%.
Step 6. pair Mg-Mn alloy is got 18 temperature spots, makes corresponding evaporation capacity, calculates the evaporation percent weight loss, and draws temperature---and the evaporation percent weight loss contains discharge curve, specifically as shown in Figure 2.
Step 7. is found out the Mg-Mn alloy and is undergone mutation at 1170 ℃ of evaporation capacity from Fig. 2.1170 ℃ are Mg-Mn (2.1%) alloy boiling point.
Claims (1)
1, a kind of new method-weight-loss method of measuring the alloy boiling point is to utilize alloy at high temperature to evaporate, and when alloy liquid reached boiling temperature, the principle that evaporation capacity is undergone mutation was measured the boiling point of alloy, it is characterized in that:
A) measure alloy sample under predetermined temperature, be incubated 10-30 minute alloy evaporation weight loss;
B) get some samples, measure corresponding evaporation weight loss in different temperature points, and calculate percent weight loss content, draw temperature---evaporation percent weight loss content curve map, find out catastrophe point, corresponding temperature point is the boiling point of tested alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03111492 CN1444039A (en) | 2003-04-15 | 2003-04-15 | New method for measuring alloy boiling point-method of loss of weight |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03111492 CN1444039A (en) | 2003-04-15 | 2003-04-15 | New method for measuring alloy boiling point-method of loss of weight |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1444039A true CN1444039A (en) | 2003-09-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03111492 Pending CN1444039A (en) | 2003-04-15 | 2003-04-15 | New method for measuring alloy boiling point-method of loss of weight |
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| Country | Link |
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| CN (1) | CN1444039A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103196778A (en) * | 2013-03-07 | 2013-07-10 | 常州大学 | Determination method and apparatus of liquid hydrocarbon evaporation capacity and diffusion concentration of vapor cloud |
| CN113820352A (en) * | 2020-06-18 | 2021-12-21 | 王鹏飞 | Device for detecting magnesium metal evaporation |
-
2003
- 2003-04-15 CN CN 03111492 patent/CN1444039A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103196778A (en) * | 2013-03-07 | 2013-07-10 | 常州大学 | Determination method and apparatus of liquid hydrocarbon evaporation capacity and diffusion concentration of vapor cloud |
| CN113820352A (en) * | 2020-06-18 | 2021-12-21 | 王鹏飞 | Device for detecting magnesium metal evaporation |
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