CN1175953C - Resistance welding method for non-crystal Zr-base blocks - Google Patents
Resistance welding method for non-crystal Zr-base blocks Download PDFInfo
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- CN1175953C CN1175953C CNB011139870A CN01113987A CN1175953C CN 1175953 C CN1175953 C CN 1175953C CN B011139870 A CNB011139870 A CN B011139870A CN 01113987 A CN01113987 A CN 01113987A CN 1175953 C CN1175953 C CN 1175953C
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- 238000003466 welding Methods 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000013078 crystal Substances 0.000 title claims abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 22
- 238000002425 crystallisation Methods 0.000 description 6
- 230000008025 crystallization Effects 0.000 description 6
- 239000002178 crystalline material Substances 0.000 description 5
- 238000005259 measurement Methods 0.000 description 3
- 239000005300 metallic glass Substances 0.000 description 3
- 239000000956 alloy Substances 0.000 description 2
- 229910000808 amorphous metal alloy Inorganic materials 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 244000137852 Petrea volubilis Species 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
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Abstract
The present invention relates to a resistance welding method for non-crystal zirconium-base block materials. The materials are welded by pulse current. The period of the pulse current is 50 to 500 mu s, the maximum peak current density is 1 to 5 kA/mm<2>, and the duration of single pulse is 50 to 5000 mu s. Non-crystal materials can not be crystallized after the materials are welded by the present invention. Therefore, the present invention can be used for welding non-crystal materials which are unsuited for being welded by the conventional welding method.
Description
Technical field
The present invention relates to the amorphous alloy material solder technology, specifically a kind of method for resistance welding of non-crystal Zr-base blocks.
Background technology
Non-crystaline amorphous metal is because its special architectural feature, and has excellent physics and mechanical property.The non-crystalline material that obtains block is the target that scientists is pursued in decades always.In recent years, breakthrough progress appearred in this field.People can prepare multiple non-crystal Zr-base blocks now.These non-crystaline amorphous metals have a lot of particular performances, and are corrosion-resistant, wear-resistant etc. as very high elastic limit (2000MPa) and higher Young ' s modulus (100GPa) and higher intensity and toughness, so they have very big research and using value.Yet, any material is when using, welding all is a problem that is difficult to avoid, at present, general welding method such as stored energy welding, friction welding (FW) or resistance welded but should not be used for welding non-crystalline material, because crystallization can take place non-crystaline amorphous metal in its welding process, will cause such properties of materials to scatter and disappear.
Summary of the invention
The object of the present invention is to provide a kind of method for resistance welding of non-crystal Zr-base blocks.
To achieve these goals, technical scheme of the present invention is: adopt pulse current to weld such material, the cycle of its pulse current is 50～500 μ s, and peak inrush current density is 1～5kA/mm
2, the duration of individual pulse is 50～5000 μ s; The preferable parameter of pulse current is: the cycle of pulse current is 100～200 μ s, and peak inrush current density is 2～4kA/mm
2, duration 500～1500 μ s of individual pulse.
The present invention has following characteristics:
1. solve the difficult problem that conventional welding can't resolve.Adopt the present invention to weld amorphous alloy material, can avoid non-crystaline amorphous metal generation crystallization, keep such properties of materials, therefore maximum superiority is to have solved the non-crystalline material Welding Problems that conventional welding method should not be used.
2. weld interval is short, efficient is high.The time of general half cycle of electric resistance welding electric current, whole weld interval was in the magnitude of second or longer just more than 8000 μ s.As seen to compare the time shorter for the present invention and general electric resistance welding, and current density is bigger, and is the difference of the order of magnitude.Because weld interval is very short, therefore can avoids taking place crystallization, thereby guarantee welding quality, and can increase work efficiency.
Description of drawings
Fig. 1 is the device schematic diagram of welding process of the present invention.
Fig. 2 is the oscillogram of the pulse current of one embodiment of the invention.
Fig. 3 engages pattern partly after the one embodiment of the invention sample welding.
Fig. 4 is the sample after original sample of one embodiment of the invention and the welding, and the X-ray diffractogram of original sample behind 700 ℃ of insulation 1h.
Fig. 5 engages pattern partly after the another embodiment of the present invention sample welding.
Fig. 6 is the X-ray diffractogram of the sample after the another embodiment of the present invention welding.
Fig. 7 engages pattern partly after the third embodiment of the invention sample welding.
Fig. 8 is the X-ray diffractogram of the sample after the third embodiment of the invention welding.
The specific embodiment
Below by embodiment in detail the present invention is described in detail.
Embodiment 1
Material therefor is that diameter is the Zr of 4mm
55Al
10Ni
5Cu
30(At%) amorphous pole.Material is cut into the small column that length is 5mm, and disk is the composition surface of two sample butt joints, and this face polishes with sand paper, does not add any other material during welding between the composition surface.Fig. 1 is the device schematic diagram of welding process of the present invention.Wherein: 1 is the Cu electrode, and 2 is sample, and 3 are Cu protection pad, and impulse current generator is formed by capacitor bank, and pulse current is by 10 MWF15-36 capacitor discharge generation.The waveform of pulse current and basic parameter are measured by TDS3012 type oscillograph.Apply the compression stress ot that a size is about 200MPa by electrode to sample during welding.
Fig. 2 is the oscillogram of the pulse current of present embodiment, wherein the cycle t of pulse current
p=130 μ s, peak inrush current density j
m=2.5kA/mm
2, the duration 800 μ s of individual pulse.Fig. 3 engages pattern partly after the present embodiment sample welding, sample engages very good, middle without any the slit as can be seen from Figure.Fig. 4 is original sample (curve a), the sample after the welding (curve b), and original sample X-ray diffractogram of (curve c) behind 700 ℃ of insulation 1h.Wherein curve a and b are the X-ray diffractograms of typical non-crystalline material, have tangible differently with the X-ray diffractogram (curve c) of sample after the crystallization, and curve b explanation sample remains amorphous after the pulse current welding.Amorphous hardness after crystallization takes place can change, and therefore measuring microhardness can judge also whether sample remains amorphous after welding.The measurement result of microhardness is the microhardness HV=510 of original sample, the microhardness HV=644 of annealing sample, the microhardness HV=510 of welded specimen matrix, the microhardness HV=514 of bonding land.The result shows that body portion does not have crystallization after the sample welding, the structure of bonding land also is still non crystalline structure.
Embodiment 2
Material therefor is Zr
48Nb
8Cu
14Ni
12Be
18(At%) amorphous.Operating process is with embodiment 1.The parameter of pulse current is: cycle t
p=100 μ s, peak inrush current density j
m=3.0kA/mm
2, can obtain good welding effect during the duration 900 μ s of individual pulse and keep the original non crystalline structure of material.Fig. 5 engages pattern partly after the present embodiment sample welding, it is fine to find out that from figure sample engages.Fig. 6 is the X-ray diffractogram of the sample after the present embodiment welding, can find out that sample remains amorphous.The measurement result of microhardness shows that also sample is still amorphous after welding.
Embodiment 3
Material therefor Zr
57Ti
5Al
10Cu
20Ni
8(At%) amorphous.Operating process is with embodiment 1.The parameter of pulse current is: cycle t
p=150 μ s, peak inrush current density j
m=2.7kA/mm
2, can obtain good welding effect during the duration 1000 μ s of individual pulse and keep the original non crystalline structure of material.Fig. 7 engages pattern partly after the present embodiment sample welding, it is fine to find out that from figure sample engages.Fig. 8 is the X-ray diffractogram of the sample after the present embodiment welding, can find out that sample remains amorphous.The measurement result of microhardness shows that also sample is still amorphous after welding.
Embodiment 4
Material therefor Zr
48Nb
8Cu
14Ni
12Be
18(At%) amorphous.Operating process is with embodiment 1.The parameter of pulse current is: cycle t
p=50 μ s, peak inrush current density j
m=5kA/mm
2, also can obtain good welding effect during the duration 50 μ s of individual pulse and keep the original non crystalline structure of material.
Embodiment 5
Material therefor Zr
57Ti
5Al
10Cu
20Ni
8(At%) amorphous.Operating process is with embodiment 1.The parameter of pulse current is: cycle t
p=500 μ s, peak inrush current density j
m=1kA/mm
2, also can obtain good welding effect during the duration 5000 μ s of individual pulse and keep the original non crystalline structure of material.
Above embodiment illustrates that the present invention is a kind of extraordinary technology of welding Zr base amorphous block material.This technology also can be used for welding other non-crystalline material.
Claims (2)
1. the method for resistance welding of a non-crystal Zr-base blocks, it is characterized in that: weld such material with pulse current, the cycle of pulse current is 50～500 μ s, and peak inrush current density is 1～5kA/mm
2, the duration of individual pulse is 50～5000 μ s.
2. according to the method for resistance welding of the described a kind of non-crystal Zr-base blocks of claim 1, it is characterized in that: the cycle of pulse current is 100～200 μ s, and peak inrush current density is 2～4kA/mm
2, the duration of individual pulse is 500～1500 μ s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011139870A CN1175953C (en) | 2001-05-23 | 2001-05-23 | Resistance welding method for non-crystal Zr-base blocks |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011139870A CN1175953C (en) | 2001-05-23 | 2001-05-23 | Resistance welding method for non-crystal Zr-base blocks |
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| Publication Number | Publication Date |
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| CN1386605A CN1386605A (en) | 2002-12-25 |
| CN1175953C true CN1175953C (en) | 2004-11-17 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7166292B2 (en) * | 2001-06-29 | 2007-01-23 | The Procter & Gamble Company | Top-biased beneficial components on substrates |
| KR20110043454A (en) * | 2009-10-20 | 2011-04-27 | 주식회사 동진쎄미켐 | Method of preparing the dye sensitized solar cell module using foil and dye sensitized solar cell module prepared thereby |
| CN102248275A (en) * | 2011-06-20 | 2011-11-23 | 南昌大学 | Method for ultrasonically welding block amorphous alloy material |
| CN102430862B (en) * | 2011-08-04 | 2015-08-26 | 比亚迪股份有限公司 | A kind of method for laser welding of amorphous substrate |
| CN102407402A (en) * | 2011-09-06 | 2012-04-11 | 南昌大学 | Crystal and non-crystal ultrasonic welding method |
| CN102896423B (en) * | 2012-09-29 | 2015-05-20 | 华中科技大学 | Method for preparing amorphous alloy and crystalline metal composite structure by laser rapid scanning |
| CN103862176A (en) * | 2014-04-03 | 2014-06-18 | 东莞台一盈拓科技股份有限公司 | Laser welding method of copper-based amorphous alloy and commercial metal alloy |
| CN103862174A (en) * | 2014-04-03 | 2014-06-18 | 东莞台一盈拓科技股份有限公司 | Laser welding method for zirconium-based amorphous alloy and commercial metal alloy |
| CN104139234B (en) * | 2014-08-04 | 2016-04-20 | 东莞帕姆蒂昊宇液态金属有限公司 | A kind of method for resistance welding of non-crystaline amorphous metal |
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