CN104911516B - Thread-type pipe joint - Google Patents
Thread-type pipe joint Download PDFInfo
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- CN104911516B CN104911516B CN201510247323.5A CN201510247323A CN104911516B CN 104911516 B CN104911516 B CN 104911516B CN 201510247323 A CN201510247323 A CN 201510247323A CN 104911516 B CN104911516 B CN 104911516B
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- threaded pipe
- whisker
- aluminum alloy
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Abstract
The invention relates to a thread-type pipe joint. The thread-type pipe joint is made of an aluminum alloy material. The aluminum alloy material is composed of the following components, by weight, 0.05-0.1% of Si, 0.1-0.3% of Fe, 0.3-0.5% of Cu, 0.3-0.5% of Mn, 4-5% of Mg, 0.05-0.15% of Cr, 1-2% of Zn, 0.05-0.1% of Ti, 0.1-0.2% of Zr, 3-5% of rare earth elements, and 5-10% of whiskers, the balance being Al and unavoidable impurity elements. The prepared thread-type pipe joint is advantaged by light weight, good performances and low cost. the surface is subjected to plasma micro arc oxidation treatment, thus the thread-type pipe joint has good wear resistance, heat resistance and corrosion resistance, and the service life of the thread-type pipe joint is prolonged.
Description
Technical field
The present invention relates to a kind of pipe joint, particularly relate to a kind of threaded pipe joint.
Background technology
Threaded pipe joint refers to threaded conduit coupling, is modal a kind of pipe fitting, spiral shell in industry and life
Stricture of vagina formula pipe joint makes the connection of pipeline become simpler, and dismounting and change is also easier to, and is greatly saved the cost that pipeline connects.
At present, threaded pipe joint in life is typically by material manufactures such as PC, PVC, PE, PPR.And it is industrial
Threaded pipe joint is typically by metal material manufactures such as carbon steel, rustless steel, steel alloy, pyrite, pressure higher.
Summary of the invention
The invention aims to provide a kind of lighter weight of being made up of aluminum alloy materials, better performances, cost relatively low
Threaded pipe joint.
The above-mentioned purpose of the present invention can be realized by following technical proposal: a kind of threaded pipe joint, screw-type pipe connects
Head is made up of aluminum alloy materials, and aluminum alloy materials is made up of following component (by percentage to the quality): Si:0.05-0.1%, Fe:
0.1-0.3%, Cu:0.3-0.5%, Mn:0.3-0.5%, Mg:4-5%, Cr:0.05-0.15%, Zn:1-2%, Ti:0.05-
0.1%, Zr:0.1-0.2%, rare earth element: 3-5%, whisker: 5-10%, surplus is Al and inevitable impurity element.
Aluminium alloy is a most widely used class non-ferrous metal structural material in industry, and its density is low, only 1/3 left side of ferrum
Right；But strength ratio is higher, near or above high-quality steel, and plasticity is good, can be processed into various section bar, have excellent electric conductivity,
Heat conductivity and corrosion stability.Wherein, 5754 aluminium alloys are the typical cases in Al-Mg system alloy, have excellent processing characteristics, excellent anti-corrosion
The features such as property, high-fatigue strength, high solderability and medium static strength, but its intensity shows slightly inadequate, can only achieve medium by force
Degree state, and when shaping, surface is easily generated skid wire, affects surface quality.
Therefore, present invention preferably employs 5754 aluminium alloys and prepare threaded pipe joint, but, the present invention is at 5754 aluminium alloys
On the basis of, first constituent and mass percent thereof to 5754 aluminium alloys has carried out above-mentioned adjustment, to obtain intensity, resistance to
The more preferable aluminum alloy materials of combination property such as erosion property.
First, the application on the basis of 5754 aluminium alloy constituents and mass percent thereof, improve Mg element and
The content of Zn element, and preferably the mass ratio of Mg element and Zn element is controlled at (2-3): 1 so that it is foot can be formed in the alloy
The hardening constituent MgZn of enough amounts2, thus improve the intensity of aluminum alloy materials.Meanwhile, the matter by Cu element of being also adapted to property of the present invention
Amount percentage ratio improves so that it is Zn element can be coordinated to enable aluminum alloy to material and obtain the property such as high intensity, strong corrosion resistance and preferable plasticity
Energy.But, the application controls Si element and the content of Fe element further, reduces indissoluble or insoluble AlFeSi in alloy
Deng the existence of brittlement phase, thus be conducive to the performances such as the fracture toughness of raising aluminum alloy materials of the present invention further.
Secondly, above-mentioned in the constituent of 5754 aluminium alloys and the adjustment of mass percent thereof, more it is evident that
The present invention with the addition of Zr element, rare earth and whisker in the constituent of 5754 aluminium alloys.
Wherein, Trace Zr has good plasticity and the strongest corrosion resistance, and the Zr element adding above-mentioned trace can
To suppress recrystallization, improve aluminium alloy recrystallization temperature, improve the intensity of aluminium alloy, fracture toughness and stress corrosion resistant and anti-stripping
Fall (or stratiform) corrosive nature.The concrete mechanism of action is: Zr element and the highdensity metastable Al of Al Element generation3Zr, high density
Metastable Al3Zr small and dispersed, is a kind of extremely effective strengthening dispersoid and recrystallization inhibitor, thus to alloy recrystallization
Behavior is inhibited, to obtain all kinds of semi-finished product with complete non-recrystallized structure, makes the height produced in deformation process
Density dislocation and fibrous tissue are remained.Rather than the existence of recrystallized structure makes alloy semi-finished product have more excellent resisting
Corrosive nature, Al3The strengthening disperse of Zr is then conducive to putting forward heavy alloyed fracture toughness and intensity, thus the interpolation of Zr element is permissible
It is effectively improved the combination property of aluminium alloy.
And owing to the present invention adds appropriate Zr element in aluminum alloy materials, can partly replace Cr element and Mn unit
Element, therefore, what the present invention can be suitable reduces Cr element and the mass percent of Mn element.And reduce Cr element at aluminium alloy
Content in material can reduce AIFeCrSi phase, improves Mg in alloy2The content of Si phase, thus can also carry heavy alloyed by force
Degree.
The addition of aluminum alloy materials rare earth elements is possible not only to play the effect of microalloying, moreover it is possible to the gases such as hydrogen and
Many nonmetal have stronger affinity, can generate the compound that fusing point is high, has certain dehydrogenation, refine, purification.With
Time, Rare-Earth Element Chemistry activity is extremely strong, optionally can adsorb on the crystal grain boundary grown up, and hinders the growth of crystal grain, makes
Crystal grain refines, and has rotten effect.Thus improve the intensity of aluminium alloy, hardness and toughness, improve processing characteristics, thermostability, can
Plasticity and malleability.
Whisker is a kind of a kind of fiber grown into single crystal form with high intensity, high-modulus and high elongation rate, its
Diameter the least (micron number magnitude), does not contains defect present in usual material.Therefore, the present invention adds in aluminum alloy materials
Entering whisker can make the specific strength of material, specific modulus be improved largely.But, excess fills whisker aluminum alloy materials
Performance increase not be it is obvious that add production cost on the contrary.
In above-mentioned a kind of threaded pipe joint, aluminum alloy materials is made up of following component (by percentage to the quality):
Si:0.08%, Fe:0.2%, Cu:0.4%, Mn:0.4%, Mg:4%, Cr:0.1%, Zn:2%, Ti:0.08%, Zr:
0.18%, rare earth element: 4%, whisker: 8%, surplus is Al and inevitable impurity element.Above-mentioned is to aluminum of the present invention
The constituent of alloy material and the further optimization of mass percent thereof, by the aluminium alloy material of the above-mentioned optimization blends present invention
More preferably, surface quality is more preferable for the combination properties such as processing characteristics, corrosion resistance, intensity, hardness and the toughness of material.
In above-mentioned a kind of threaded pipe joint, rare earth element is one or more in Sc, La, Ce, Y.
In above-mentioned a kind of threaded pipe joint, rare earth element is Sc.
The present invention with the addition of rare earth element in aluminum alloy materials, in conjunction with the constituent of the application aluminum alloy materials, warp
After research, the Sc element in rare earth element, Al can be formed with reactive aluminum3Sc phase, has the strongest heat stability, the most still
Keep symbiosis and epibiosis with matrix, be conducive to improving the performances such as the toughness of aluminum alloy materials, intensity.And, the application is in the alloy
Adding Sc and Zr element, owing to both physics, chemical property are close, Zr element can replace Al simultaneously3Part in Sc compound
Sc atom and form Al3(Sc, Zr) compound, not only inherits Al3The whole useful character of Sc compound, and thermally-stabilised
Property is higher.
In above-mentioned a kind of threaded pipe joint, whisker is metal whisker with ceramic whiskers in mass ratio for (3-5):
1 mixes.
In above-mentioned a kind of threaded pipe joint, metal whisker is the one in alumina whisker or ZnOw.
In above-mentioned a kind of threaded pipe joint, ceramic whiskers is silicon carbide whisker, potassium titanate crystal whisker or Alborex M 12
One in whisker.
The one in a kind of and ceramic whiskers in the further preferred metal whisker of the present invention is mixed in proportion interpolation extremely
In aluminum alloy materials, after deliberation, adding by aforementioned proportion of the present invention mixing, the mechanicalness that aluminium alloy is finally reached ratio individually adds
Mechanical performance about the 10-15% to be improved of a type of whisker.
The threaded pipe joint of the present invention is prepared by following steps: first weighs raw material and is prepared as meeting above-mentioned aluminium alloy
Material；Then the aluminum alloy materials made is prepared as after tack, turning, boring, bore hole, cutting thread screw-type pipe connect
Head blank；Finally the threaded pipe joint blank made is obtained threaded pipe joint finished product after surface processes；Wherein, table
Face is processed as plasma micro-arc oxidation and processes.
The preparation technology of threaded pipe joint of the present invention is simply, easily operate.Owing to the present invention prepares threaded pipe joint
Aluminum alloy materials is the adjustment and improvement carried out on the basis of 5754 aluminium alloys, therefore, the preparation of aluminum alloy materials of the present invention
Method can be prepared according to the preparation method of 5754 aluminium alloys.Then by the aluminum alloy materials that is prepared as through tack, turning,
Threaded pipe joint blank it is prepared as after boring, bore hole, cutting thread.Afterwards, threaded pipe joint blank is carried out by the present invention
Most important surface processes.The surface of threaded pipe joint of the present invention processes preferred plasma micro-arc oxidation and processes.Through etc.
The final products threaded pipe joint that gas ions differential arc oxidation obtains after processing, has been significantly increased the case hardness of product,
Exceed the hardness of the high-carbon steel after heat treatment, high-alloy steel and high-speed tool steel.Additionally, after plasma micro-arc oxidation processes
Threaded pipe joint, at blank growth in situ ceramic membrane, is firmly combined with and dense uniform, has good abrasion resistance properties, heat-resisting
Property and corrosion resistance, efficiently solve threaded pipe joint the most easy to wear and corrosion problem, improve screw thread
The service life of formula pipe joint.
The invention have the advantages that
Threaded pipe joint the most of the present invention uses aluminum alloy materials to make, and lighter weight, better performances, cost are relatively low.
2. to prepare the aluminum alloy materials compatibility of threaded pipe joint reasonable for the present invention, have excellent processing characteristics, corrosion resistance,
The performances such as intensity, hardness, toughness.
Threaded pipe joint surface the most of the present invention processes through plasma micro-arc oxidation, makes threaded pipe joint have good
Good abrasion resistance properties, thermostability and corrosion resistance, efficiently solves threaded pipe joint the most easy to wear and rotten
The problem of erosion, improves the service life of threaded pipe joint.
Detailed description of the invention
The following is the specific embodiment of the present invention, technical scheme is further described, but the present invention is also
It is not limited to these embodiments.
Table 1: embodiment of the present invention 1-5 prepares constituent and the mass percent thereof of the aluminum alloy materials of threaded pipe joint
Embodiment 1:
Weigh raw material to be prepared as meeting embodiment 1 in table 1 by the preparation method (prior art) of 5754 aluminium alloys and form into
Divide and the aluminum alloy materials of mass percent.Then by the aluminum alloy materials made through tack, turning, boring, bore hole,
Threaded pipe joint blank it is prepared as after cutting thread.Finally by the threaded pipe joint blank made through plasma micro-arc oxygen
Change obtains threaded pipe joint finished product after processing.
Embodiment 2:
Weigh raw material to be prepared as meeting embodiment 2 in table 1 by the preparation method (prior art) of 5754 aluminium alloys and form into
Divide and the aluminum alloy materials of mass percent.Then by the aluminum alloy materials made through tack, turning, boring, bore hole,
Threaded pipe joint blank it is prepared as after cutting thread.Finally by the threaded pipe joint blank made through plasma micro-arc oxygen
Change obtains threaded pipe joint finished product after processing.
Embodiment 3:
Weigh raw material to be prepared as meeting embodiment 3 in table 1 by the preparation method (prior art) of 5754 aluminium alloys and form into
Divide and the aluminum alloy materials of mass percent.Then by the aluminum alloy materials made through tack, turning, boring, bore hole,
Threaded pipe joint blank it is prepared as after cutting thread.Finally by the threaded pipe joint blank made through plasma micro-arc oxygen
Change obtains threaded pipe joint finished product after processing.
Embodiment 4:
Weigh raw material to be prepared as meeting embodiment 4 in table 1 by the preparation method (prior art) of 5754 aluminium alloys and form into
Divide and the aluminum alloy materials of mass percent.Then by the aluminum alloy materials made through tack, turning, boring, bore hole,
Threaded pipe joint blank it is prepared as after cutting thread.Finally by the threaded pipe joint blank made through plasma micro-arc oxygen
Change obtains threaded pipe joint finished product after processing.
Embodiment 5:
Weigh raw material to be prepared as meeting embodiment 5 in table 1 by the preparation method (prior art) of 5754 aluminium alloys and form into
Divide and the aluminum alloy materials of mass percent.Then by the aluminum alloy materials made through tack, turning, boring, bore hole,
Threaded pipe joint blank it is prepared as after cutting thread.Finally by the threaded pipe joint blank made through plasma micro-arc oxygen
Change obtains threaded pipe joint finished product after processing.
Comparative example 1 differs only in embodiment 3: the threaded pipe joint of comparative example 1 uses common 5754 aluminium alloys
Material prepares.
Comparative example 2 differs only in embodiment 3: prepare in comparative example 2 in the aluminum alloy materials of threaded pipe joint
Without Zr element.
Comparative example 3 differs only in embodiment 3: prepare in comparative example 3 in the aluminum alloy materials of threaded pipe joint
Without rare earth element.
Comparative example 4 differs only in embodiment 3: prepare in comparative example 4 in the aluminum alloy materials of threaded pipe joint
Without whisker.
Comparative example 5 differs only in embodiment 3: the threaded pipe joint prepared in comparative example 5 does not pass through
Surface processes (i.e. plasma micro-arc oxidation process).
Threaded pipe joint above-described embodiment 1-5 and comparative example 1-5 made carries out performance test, test result such as table
2 and table 3 shown in.
Table 2: embodiment 1-5 threaded pipe joint the performance test results
Table 3: comparative example 1-5 threaded pipe joint the performance test results
Knowable to table 2 and table 3, use threaded pipe joint that common 5754 aluminum alloy materials make and use comparative example 2-
The combination property of the threaded pipe joint that 4 formula are made is all not as good as the application.And knowable to comparative example 5, aluminum alloy materials is made
Threaded pipe joint without plasma micro-arc oxidation process, owing to the HB hardness of aluminum alloy materials itself is relatively low, its table
Surface hardness (HV) is relatively low.
Specific embodiment described herein is only to present invention spirit explanation for example.Technology neck belonging to the present invention
Described specific embodiment can be made various amendment or supplements or use similar mode to substitute by the technical staff in territory, but also
Do not deviate by the spirit of the present invention or surmount scope defined in appended claims.
Although the present invention has been made a detailed description and has quoted some specific embodiments as proof, but skilled to this area
For technical staff, as long as it is obvious for can making various changes without departing from the spirit and scope of the present invention or revise.
Claims (6)
1. a threaded pipe joint, it is characterised in that described threaded pipe joint is made up of aluminum alloy materials, described aluminium alloy
Material is made up of following component (by percentage to the quality): Si:0.05-0.1%, Fe:0.1-0.3%, Cu:0.3-0.5%,
Mn:0.3-0.5%, Mg:4-5%, Cr:0.05-0.15%, Zn:1-2%, Ti:0.05-0.1%, Zr:0.1-0.2%, rare earth
Element: 3-5%, whisker: 5-10%, surplus is Al and inevitable impurity element；Wherein, described whisker is metal whisker
With ceramic whiskers in mass ratio for (3-5): 1 mixes.
A kind of threaded pipe joint the most according to claim 1, it is characterised in that described aluminum alloy materials is by following component
(by percentage to the quality) composition: Si:0.08%, Fe:0.2%, Cu:0.4%, Mn:0.4%, Mg:4%, Cr:0.1%, Zn:
2%, Ti:0.08%, Zr:0.18%, rare earth element: 4%, whisker: 8%, surplus is Al and inevitable impurity element.
A kind of threaded pipe joint the most according to claim 1, it is characterised in that described rare earth element is Sc, La, Ce, Y
In one or more.
A kind of threaded pipe joint the most according to claim 3, it is characterised in that described rare earth element is Sc.
A kind of threaded pipe joint the most according to claim 1, it is characterised in that described metal whisker is alumina whisker
Or the one in ZnOw.
A kind of threaded pipe joint the most according to claim 1, it is characterised in that described ceramic whiskers is silicon carbide whisker
One in palpus, potassium titanate crystal whisker or aluminium borate whisker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510247323.5A CN104911516B (en) | 2015-05-14 | 2015-05-14 | Thread-type pipe joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510247323.5A CN104911516B (en) | 2015-05-14 | 2015-05-14 | Thread-type pipe joint |
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| CN104911516A CN104911516A (en) | 2015-09-16 |
| CN104911516B true CN104911516B (en) | 2017-01-11 |
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| CN201510247323.5A Active CN104911516B (en) | 2015-05-14 | 2015-05-14 | Thread-type pipe joint |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105369088A (en) * | 2015-11-18 | 2016-03-02 | 宁波市鄞州银鑫铝业有限公司 | Valve core |
| CN105441751A (en) * | 2015-11-18 | 2016-03-30 | 宁波市鄞州银鑫铝业有限公司 | Aluminum pipe special for warmer |
| CN105423164A (en) * | 2015-11-25 | 2016-03-23 | 宁波市柯玛士太阳能科技有限公司 | Electric torch |
| AR107043A1 (en) * | 2015-12-25 | 2018-03-14 | Nippon Steel & Sumitomo Metal Corp | THREADED CONNECTION FOR PIPE OR PIPE AND METHOD TO PRODUCE THE THREADED CONNECTION FOR PIPE OR TUBE |
| CN108286065B (en) * | 2018-02-28 | 2019-07-23 | 中南大学 | A kind of preparation method of the aluminium alloy oil drilling pipe screw joint with insulation and wear and corrosion behavior |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101906558A (en) * | 2010-02-03 | 2010-12-08 | 北京福吉长安防爆材料有限责任公司 | Whisker reinforced aluminum alloy explosion suppression material and manufacturing method thereof |
| EP2546373A1 (en) * | 2011-07-13 | 2013-01-16 | Aleris Aluminum Koblenz GmbH | Method of manufacturing an Al-Mg alloy sheet product |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007115617A1 (en) * | 2006-04-07 | 2007-10-18 | Aleris Aluminum Koblenz Gmbh | Al-mg alloy product suitable for armour plate applications |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101906558A (en) * | 2010-02-03 | 2010-12-08 | 北京福吉长安防爆材料有限责任公司 | Whisker reinforced aluminum alloy explosion suppression material and manufacturing method thereof |
| EP2546373A1 (en) * | 2011-07-13 | 2013-01-16 | Aleris Aluminum Koblenz GmbH | Method of manufacturing an Al-Mg alloy sheet product |
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