CN107502802A - Instrument magnesium alloy and preparation method thereof is temporarily blocked up in a kind of oil-gas mining - Google Patents

Instrument magnesium alloy and preparation method thereof is temporarily blocked up in a kind of oil-gas mining Download PDF

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Publication number
CN107502802A
CN107502802A CN201710844643.8A CN201710844643A CN107502802A CN 107502802 A CN107502802 A CN 107502802A CN 201710844643 A CN201710844643 A CN 201710844643A CN 107502802 A CN107502802 A CN 107502802A
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magnesium alloy
pure
instrument
oil
intermediate alloys
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韩振华
孙劲松
王学娟
张凯
梁山
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Xian University of Technology
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Xian University of Technology
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    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C23/00Alloys based on magnesium
    • C22C23/06Alloys based on magnesium with a rare earth metal as the next major constituent
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C1/00Making non-ferrous alloys
    • C22C1/02Making non-ferrous alloys by melting
    • C22C1/03Making non-ferrous alloys by melting using master alloys
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C23/00Alloys based on magnesium

Abstract

The invention discloses a kind of oil-gas mining temporarily to block up instrument magnesium alloy, mainly includes:Gd accounts for 2% the 4% of gross mass, Ni accounts for the 0 1% of gross mass, Cu accounts for the 0 1% of gross mass, Mn accounts for 0.05% the 0.1% of gross mass, Al accounts for 0.05% the 0.1% of gross mass, and remaining composition is Mg, and gross mass percentage sum is 100%, the mechanical property of improvement magnesium alloy can be realized by changing the institutional framework of magnesium alloy;The preparation method of instrument magnesium alloy is temporarily blocked up the invention also discloses a kind of oil-gas mining, the preparation technology of magnesium alloy can be simplified, the alloy meets the requirement in Practical Project field, formed can practical application in industry cast magnesium alloy and preparation method thereof.

Description

Instrument magnesium alloy and preparation method thereof is temporarily blocked up in a kind of oil-gas mining
Technical field
The invention belongs to technical field of alloy material, and in particular to instrument magnesium alloy is temporarily blocked up in a kind of oil-gas mining, also relates to And the preparation method of the magnesium alloy.
Background technology
Magnesium alloy has the advantage of uniqueness in actual applications, such as:Specific strength is high, bigger than modulus of elasticity, thermal diffusivity is good, right Alkali and organic matter have stronger corrosion resistance.Pure Mg is a kind of argenteous light metal, but its combination property is poor, in reality The application value of border engineering field is not very high, therefore is a feasible scheme by pure Mg progress Alloying Treatments.
Use at present it is most commonly used be magnesium alloy, next to that magnesium-manganese alloy and magnesium-zinc-zircaloy.Currently, exist In the recovery process of Hyposmolality oil gas field, in order to improve the yield of oil gas field and production efficiency, the application of instrument is temporarily blocked up in underground It is more and more extensive, for example:Soluble pressure break ball.It is general in the world that pressure break ball is produced using materials such as nylon, but nylon material Material can deform in use, and be stuck in sliding sleeve.Operated further, since pressure break ball is insoluble, it is necessary to carry out anti-row, So production efficiency will reduce.
The content of the invention
It is an object of the invention to provide a kind of oil-gas mining temporarily to block up instrument magnesium alloy, can be by changing the tissue of magnesium alloy Structure, the mechanical stretch performance of magnesium alloy can be strengthened.
The preparation method of instrument magnesium alloy is temporarily blocked up it is a further object of the present invention to provide a kind of oil-gas mining.
The technical solution adopted by the present invention is, instrument magnesium alloy is temporarily blocked up in a kind of oil-gas mining, according to mass percent by Raw material forms:
Gd 2%-10%, Ni 0%-5%, Cu 0%-5%, Mn 0.05%-0.1%, Al 0.05%-0.1%, its Remaining composition is Mg, and above material quality summation is 100%.
Another technical scheme of the present invention is that the preparation method of instrument magnesium alloy is temporarily blocked up in a kind of oil-gas mining, according to Lower step is implemented:
Step 1, smelting equipment is pre-processed, specific method is as follows:
In smelting equipment external coating last layer zinc oxide coating, and equipment being heated, heating-up temperature is 200 DEG C, 2h is incubated, coverture is heated to 100 DEG C of insulation 1h, for removing moisture removal;
Step 2, weigh raw material pure nickel 0-5%, fine copper 0-5%, Mg-Gd intermediate alloy 6.67%-33.3%, Mg-Al Dehumidification treatments are dried in raw material by intermediate alloy 0.167%-0.33%, Mg-Mn intermediate alloy 0.167%-0.33%;
Step 3, the raw material for weighing step 2 are placed in the smelting equipment that step 1 pre-processes, and magnesium alloy is prepared, Specifically implement according to following steps:
Step 3.1, the pure Mg for weighing step 2 are added in crucible, surface addition coverture, pure Mg are covered, then will Crucible is warming up to 720 DEG C and treats that pure Mg is completely dissolved, and is then incubated 20min-25min, obtains liquid magnesium solution;
Step 3.2, by the Mg-Gd intermediate alloys weighed in step 2, Mg-Al intermediate alloys, Mg-Mn intermediate alloys add Into the liquid magnesium solution obtained through step 3.1, treat that Mg-Gd intermediate alloys, Mg-Al intermediate alloys, Mg-Mn intermediate alloys are complete 750 DEG C are warming up to after being dissolved in liquid magnesium solution, is then incubated 10min-20min, obtains intermediate product;
Step 3.3, the pure Ni weighed in step 2 and pure Cu be added in the intermediate product obtained through step 3.2, treated pure After Ni and pure Cu is cmpletely dissolved in intermediate product, stirs and pull down surface slag, obtain magnesium alloy solution;
Step 3.4, the magnesium alloy solution obtained through step 3.3 being cooled to 710-720 DEG C, insulation stands 20-25min, It is cast in mould, obtains magnesium alloy.
The features of the present invention also resides in:
In step 2:Pure Mg, pure Cu, pure Ni purity are not less than 99.9%.
The mass fraction that Gd mass fraction is Al in 30%, Mg-Al intermediate alloys in Mg-Gd intermediate alloys is 30%, Mn mass fraction is 30% in Mg-Mn intermediate alloys.
In step 2, the process of desiccant dehumidification processing is specific as follows:Raw material are first heated to temperature as 200 DEG C, then protected Warm 2h.
In step 3.1:Coverture is made up of the mixing of following raw material:
MgCl241-47%, KCl 33-39%, BaCl24-10%, CaF21-7%, CaCl21-7%, NaCl 1- 7%, MgO 1-7%, impurity 1.5%, H2O 0.5%, above raw material gross mass are 100%.
The invention has the advantages that
In the magnesium alloy of the present invention, by the alloying element that certain mass percentage is added in the form of intermediate alloy Gd, Gd have larger solid solubility, have the solution strengthening effect of itself after addition, can improve castability to a certain extent Can, improve the room temperature and mechanical behavior under high temperature and creep-resistant property of magnesium alloy, in downhole fluid environment and can enough from Row decomposes, and without carrying out anti-row's operation, so as to improve production efficiency, improves the yield of oil gas field;And addition can carry wherein Cu, Ni of high magnesium alloy mechanical property;
The magnesium alloy preparation method of the present invention, each raw material components reasonable mixture ratio, simple production process, can effectively be improved The bulk strength of magnesium alloy, improve its mechanical property;The method that the present invention uses melting and casting, by regulate and control the composition of alloy with Preparation technology, can obtain novel magnesium alloy, Gd and part Mg be added in preparation process with Mg-Gd intermediate alloys, than independent Addition is cheap, is mass produced suitable for industrialization, and solute element distribution evenly, prevents partially in fusion process Analysis, the alloy meet the requirement in Practical Project field, and the magnesium alloy that instrument is temporarily blocked up in oil-gas mining can be applied to by being formed.
Brief description of the drawings
Fig. 1 is that the tensile mechanical properties curve map of instrument magnesium alloy is temporarily blocked up in the oil-gas mining of the present invention;
Fig. 2 is the tensile mechanical properties curve of comparative alloy;
Fig. 3 is that the metallurgical structure figure of instrument magnesium alloy is temporarily blocked up in the oil-gas mining of the present invention;
Fig. 4 is the metallurgical structure figure of comparative alloy;
Fig. 5 is the corrosion rate figure of different content Ni additions;
Fig. 6 is the weight loss rate figure of different content Ni additions.
Embodiment
The present invention is described in detail with reference to the accompanying drawings and detailed description.
Instrument magnesium alloy is temporarily blocked up in a kind of oil-gas mining of the present invention, is made up of according to mass percent raw material:
Gd 2%-10%, Ni 0%-5%, Cu 0%-5%, Mn 0.05%-0.1%, Al 0.05%-0.1%, its Remaining composition is Mg, and above material quality summation is 100%.
The preparation method of instrument magnesium alloy is temporarily blocked up in above-mentioned oil-gas mining, is implemented according to following steps:
Step 1, smelting equipment is pre-processed, specific method is as follows:
In smelting equipment external coating last layer zinc oxide coating, and equipment being heated, heating-up temperature is 200 DEG C, 2h is incubated, coverture is heated to 100 DEG C of insulation 1h, for removing moisture removal;
Step 2, raw material are weighed, dehumidification treatments are dried to raw material;
Raw material refer to pure Mg, Mg-Gd intermediate alloy, Mg-Al intermediate alloys, Mg-Mn intermediate alloys, pure Cu, pure Ni;Its In, pure Mg, pure Cu, pure Ni purity are not less than 99.9%;Gd mass fraction is in 30%, Mg-Al in Mg-Gd intermediate alloys Between Al mass fraction is Mn in 30%, Mg-Mn intermediate alloys in alloy mass fraction be 30%;
Desiccant dehumidification processing, which refers to, is heated to temperature to raw material as 200 DEG C, and is incubated 2h.
Step 3, the raw material weighed in step 2 are placed in the smelting equipment that step 1 pre-processes, oil gas is obtained through refining Instrument magnesium alloy is temporarily blocked up in exploitation, specifically implements according to following steps:
Step 3.1, the pure Mg weighed in step 2 is added in crucible, surface addition coverture, pure Mg covered, will Crucible is warming up to 720 DEG C and treats that pure Mg is completely dissolved, and is then incubated 20min-25min, obtains liquid magnesium solution;
Wherein, coverture is obtained after mixing by following raw material:
MgCl241-47%, KCl 33-39%, BaCl24-10%, CaF21-7%, CaCl21-7%, NaCl 1- 7%, MgO 1-7%, impurity 1.5%, H2O 0.5%, above raw material gross mass are 100%.
Step 3.2, by the Mg-Gd intermediate alloys weighed in step 2, Mg-Al intermediate alloys, Mg-Mn intermediate alloys add Into the liquid magnesium solution obtained through step 3.1, treat that Mg-Gd intermediate alloys, Mg-Al intermediate alloys, Mg-Mn intermediate alloys are complete 750 DEG C of heating, is then incubated 10min-20min, obtains intermediate product after being dissolved in liquid magnesium solution;
Step 3.3, the pure Ni weighed in step 2 and pure Cu be added in the intermediate product obtained through step 3.2, treated pure After Ni and pure Cu is cmpletely dissolved in intermediate product, stirs and pull down surface slag, obtain magnesium alloy solution;
Step 3.4, the magnesium alloy solution obtained through step 3.3 is cooled to 720 DEG C, insulation stands 20min, is cast to mould Among tool, magnesium alloy is obtained.
Embodiment 1
Instrument magnesium alloy is temporarily blocked up in a kind of oil-gas mining, mainly includes following components according to mass percent:Gd 2%, Mn 0.05%, Al 0.05%, Mg 97.9%.
The preparation method of instrument magnesium alloy is temporarily blocked up in a kind of oil-gas mining, is implemented according to following steps:
Step 1, equipment is pre-processed, in smelting equipment external coating last layer zinc oxide coating, and equipment added Heat, heating-up temperature are 200 DEG C, are incubated 2h, coverture is heated to 100 DEG C of insulation 1h, for removing moisture removal;
Step 2, former material Mg-Gd intermediate alloys 6.67%, Mg-Al intermediate alloys 0.167%% are weighed, Mg-Mn is closed centre Pure Mg 89.99%, dehumidification treatments is dried in raw material by gold 0.167%;
Wherein, desiccant dehumidification processing, which refers to, is heated to temperature as 200 DEG C, and is incubated 2h;
Step 3, the raw material weighed in step 2 are placed in the smelting equipment that step 1 pre-processes, oil gas is obtained through refining Instrument magnesium alloy is temporarily blocked up in exploitation, specifically implements according to following steps:
Step 3.1, the pure Mg weighed in step 2 is added in crucible, surface addition coverture, pure Mg covered, then Crucible is warming up to 720 DEG C and treats that pure Mg is completely dissolved, 20min is then incubated, obtains liquid magnesium solution;
Wherein, the purity of pure magnesium is 99.9%;
Wherein, coverture is obtained after mixing by following raw material:
MgCl241%, KCl 33%, BaCl24%, CaF27%, CaCl27%, NaCl 5%, MgO 1%, impurity 1.5%, H2O 0.5%;
The Mg-Gd intermediate alloys weighed in step 2, Mg-Al intermediate alloys, Mg-Mn intermediate alloys are added to by step 3.2 In the liquid magnesium solution obtained through step 3.1, treat that Mg-Gd intermediate alloys, Mg-Al intermediate alloys, Mg-Mn intermediate alloys are completely molten Solution in liquid magnesium solution after be warming up to 750 DEG C, be then incubated 10min, obtain intermediate product;
Wherein, Gd mass fraction is for the mass fraction of Al in 30%, Mg-Al intermediate alloys in Mg-Gd intermediate alloys Mn mass fraction is 30% in 30%, Mg-Mn intermediate alloy, and the pure and beautiful and mass ratio of Mg-Gd intermediate alloys is 6.35;
Step 3.3, the pure Ni weighed in step 2 and pure Cu be added in the intermediate product obtained through step 3.2, treated pure After Ni and pure Cu is cmpletely dissolved in intermediate product, stirs and pull down surface slag, obtain magnesium alloy solution;
Wherein, the purity of pure magnesium is 99.9%;
Step 3.4, the magnesium alloy solution obtained through step 3.3 being cooled to 710-720 DEG C, insulation stands 20-25min, It is cast in mould, obtains magnesium alloy.
Embodiment 2
Instrument magnesium alloy is temporarily blocked up in a kind of oil-gas mining, mainly includes following raw material according to mass percent:Gd 4%, Ni 1.2%, Cu 1%, Mn 0.06%, Al 0.06%, Mg accounts for 95.68%.
The preparation method of instrument magnesium alloy is temporarily blocked up in a kind of oil-gas mining, is implemented according to following steps:
Step 1, equipment is pre-processed, in smelting equipment external coating last layer zinc oxide coating, and equipment added Heat, heating-up temperature are 200 DEG C, are incubated 2h, coverture is heated to 100 DEG C of insulation 1h, for removing moisture removal;
Step 2, weigh raw material pure nickel 1.2%, fine copper 1%, Mg-Gd intermediate alloys 13.3%, Mg-Al intermediate alloys Dehumidification treatments are dried in raw material by 0.2%, Mg-Mn intermediate alloy 0.2%, pure Mg 84.1%;
Wherein, desiccant dehumidification processing, which refers to, is heated to temperature as 200 DEG C, and is incubated 2h;
Step 3, the raw material for weighing step 2 are placed in the smelting equipment that step 1 pre-processes, and obtaining oil gas through refining opens Temporarily stifled instrument magnesium alloy is adopted, is specifically implemented according to following steps:
Step 3.1, the pure Mg for weighing step 2 are added in crucible, surface addition coverture, pure Mg are covered, then will Crucible is warming up to 720 DEG C and treats that pure Mg is completely dissolved, and is then incubated 22min, obtains liquid magnesium solution;
Wherein, the purity of pure magnesium is 99.9%;
Wherein, coverture is obtained after mixing by following raw material:
MgCl242%, KCl 34%, BaCl25%, CaF26%, CaCl26%, NaCl 3%, MgO 2%, impurity 1.5%, H2O 0.5%;
Step 3.2, by the Mg-Gd intermediate alloys weighed in step 2, Mg-Al intermediate alloys, Mg-Mn intermediate alloys add Into the liquid magnesium solution obtained through step 3.1, treat that Mg-Gd intermediate alloys, Mg-Al intermediate alloys, Mg-Mn intermediate alloys are complete 750 DEG C are warming up to after being dissolved in liquid magnesium solution, is then incubated 13min, obtains intermediate product;
Wherein, Gd mass fraction is for the mass fraction of Al in 30%, Mg-Al intermediate alloys in Mg-Gd intermediate alloys Mn mass fraction is 30% in 30%, Mg-Mn intermediate alloy;
Step 3.3, the pure Ni weighed in step 2 and pure Cu be added in the intermediate product obtained through step 3.2, treated pure After Ni and pure Cu is cmpletely dissolved in intermediate product, stirs and pull down surface slag, obtain magnesium alloy solution;
Step 3.4, the magnesium alloy solution obtained through step 3.3 is cooled to 712 DEG C, insulation stands 22min, is cast to mould In tool, magnesium alloy is obtained.
Embodiment 3
Instrument magnesium alloy is temporarily blocked up in a kind of oil-gas mining, mainly includes following raw material according to mass percent:Gd 5%, Ni 3%, Cu 2.5%, Mn 0.07%, Al 0.07%, Mg 89.36%.
The preparation method of instrument magnesium alloy is temporarily blocked up in a kind of oil-gas mining, is implemented according to following steps:
Step 1, equipment is pre-processed, in smelting equipment external coating last layer zinc oxide coating, and equipment added Heat, heating-up temperature are 200 DEG C, are incubated 2h, coverture is heated to 100 DEG C of insulation 1h, for removing moisture removal;
Step 2, weigh raw material pure nickel 3%, fine copper 2.5%, Mg-Gd intermediate alloys 16.7%, Mg-Al intermediate alloys Dehumidification treatments are dried in raw material by 0.233%, Mg-Mn intermediate alloy 0.233%, pure Mg 77.33%;
Wherein, desiccant dehumidification processing, which refers to, is heated to temperature as 200 DEG C, and is incubated 2h;
Step 3, the raw material weighed in step 2 are placed in the smelting equipment that step 1 pre-processes, oil gas is obtained through refining Instrument magnesium alloy is temporarily blocked up in exploitation, specifically implements according to following steps:
Step 3.1, the pure Mg for weighing step 2 are added in crucible, surface addition coverture, pure Mg are covered, then will Crucible is warming up to 720 DEG C and treats that pure Mg is completely dissolved, and is then incubated 23min, obtains liquid magnesium solution;
Wherein, the purity of pure magnesium is 99.9%;
Wherein, coverture is obtained after mixing by following raw material:
MgCl244%, KCl 35%, BaCl27%, CaF23%, CaCl23%, NaCl 3%, MgO 3%, impurity 1.5%, H2O 0.5%;
Step 3.2, by the Mg-Gd intermediate alloys weighed in step 2, Mg-Al intermediate alloys, Mg-Mn intermediate alloys add Into the liquid magnesium solution obtained through step 3.1, treat that Mg-Gd intermediate alloys, Mg-Al intermediate alloys, Mg-Mn intermediate alloys are complete 750 DEG C are warming up to after being dissolved in liquid magnesium solution, is then incubated 14min, obtains intermediate product;
Wherein, Gd mass fraction is for the mass fraction of Al in 30%, Mg-Al intermediate alloys in Mg-Gd intermediate alloys Mn mass fraction is 30% in 30%, Mg-Mn intermediate alloy;
Step 3.3, the pure Ni weighed in step 2 and pure Cu be added in the intermediate product obtained through step 3.2, treated pure After Ni and pure Cu is cmpletely dissolved in intermediate product, stirs and pull down surface slag, obtain magnesium alloy solution;
Wherein, pure Cu, pure Ni purity are 99.9%;
Step 3.4, the magnesium alloy solution obtained through step 3.3 is cooled to 715 DEG C, insulation stands 23min, is cast to mould In tool, magnesium alloy is obtained.
Embodiment 4
Instrument magnesium alloy is temporarily blocked up in a kind of oil-gas mining, mainly includes following raw material according to mass percent:Gd 8%, Ni 4%, Cu 4%, Mn 0.08%, Al 0.09%, Mg 85.83%.
The preparation method of instrument magnesium alloy is temporarily blocked up in a kind of oil-gas mining, is implemented according to following steps:
Step 1, equipment is pre-processed, in smelting equipment external coating last layer zinc oxide coating, and equipment added Heat, heating-up temperature are 200 DEG C, are incubated 2h, coverture is heated to 100 DEG C of insulation 1h, for removing moisture removal;
Step 2, weigh raw material pure nickel 4%, fine copper 4%, Mg-Gd intermediate alloys 26.67%, Mg-Al intermediate alloys Dehumidification treatments are dried in raw material by 0.3%, Mg-Mn intermediate alloy 0.267%, pure Mg 64.77%;
Wherein, desiccant dehumidification processing, which refers to, is heated to temperature as 200 DEG C, and is incubated 2h;
Step 3, the raw material weighed in step 2 are placed in the smelting equipment that step 1 pre-processes, oil gas is obtained through refining Instrument magnesium alloy is temporarily blocked up in exploitation, specifically implements according to following steps:
Step 3.1, the pure Mg for weighing step 2 are added in crucible, surface addition coverture, pure Mg are covered, then will Crucible is warming up to 720 DEG C and treats that pure Mg is completely dissolved, and is then incubated 24min, obtains liquid magnesium solution;
Wherein, the purity of pure magnesium is not less than 99.9%;
Wherein, coverture is obtained after mixing by following raw material:
MgCl246%, KCl 36%, BaCl27%, CaF22%, CaCl22%, NaCl 2%, MgO 3%, impurity 1.5%, H2O 0.5%;
Step 3.2, by the Mg-Gd intermediate alloys weighed in step 2, Mg-Al intermediate alloys, Mg-Mn intermediate alloys add Into the liquid magnesium solution obtained through step 3.1, treat that Mg-Gd intermediate alloys, Mg-Al intermediate alloys, Mg-Mn intermediate alloys are complete 750 DEG C are warming up to after being dissolved in liquid magnesium solution, is then incubated 17min, obtains intermediate product;
Wherein, Gd mass fraction is for the mass fraction of Al in 30%, Mg-Al intermediate alloys in Mg-Gd intermediate alloys Mn mass fraction is 30% in 30%, Mg-Mn intermediate alloy;
Step 3.3, the pure Ni weighed in step 2 and pure Cu be added in the intermediate product obtained through step 3.2, treated pure After Ni and pure Cu is cmpletely dissolved in intermediate product, stirs and pull down surface slag, obtain magnesium alloy solution;
Wherein, pure Cu, pure Ni purity are 99.9%;
Step 3.4, the magnesium alloy solution obtained through step 3.3 is cooled to 717 DEG C, insulation stands 24min, is cast to mould In tool, magnesium alloy is obtained.
Embodiment 5
Instrument magnesium alloy is temporarily blocked up in a kind of oil-gas mining, mainly includes following raw material according to mass percent:Gd 10%, Ni 5%, Cu 5%, Mn 0.1%, Al 0.1%, Mg 79.8%.
The preparation method of instrument magnesium alloy is temporarily blocked up in a kind of oil-gas mining, is implemented according to following steps:
Step 1, equipment is pre-processed, in smelting equipment external coating last layer zinc oxide coating, and equipment added Heat, heating-up temperature are 200 DEG C, are incubated 2h, coverture is heated to 100 DEG C of insulation 1h, for removing moisture removal;
Step 2, weigh raw material pure nickel 5%, fine copper 5%, Mg-Gd intermediate alloys 33.3%, Mg-Al intermediate alloys Dehumidification treatments are dried in raw material by 0.33%, Mg-Mn intermediate alloy 0.33%, pure Mg 56.04%;
Wherein, desiccant dehumidification processing, which refers to, is heated to temperature as 200 DEG C, and is incubated 2h;
Step 3, the raw material weighed in step 2 are placed in the smelting equipment that step 1 pre-processes, oil gas is obtained through refining Instrument magnesium alloy is temporarily blocked up in exploitation, specifically implements according to following steps:
Step 3.1, the pure Mg for weighing step 2 are added in crucible, surface addition coverture, pure Mg are covered, then will Crucible is warming up to 720 DEG C and treats that pure Mg is completely dissolved, and is then incubated 25min, obtains liquid magnesium solution;
Wherein, the purity of pure magnesium is not less than 99.9%;
Coverture is obtained after mixing by following raw material:
MgCl247%, KCl 39%, BaCl28%, CaF21%, CaCl21%, NaCl 1%, MgO 1%, impurity 1.5%, H2O 0.5%;
Step 3.2, by the Mg-Gd intermediate alloys weighed in step 2, Mg-Al intermediate alloys, Mg-Mn intermediate alloys add Into the liquid magnesium solution obtained through step 3.1, treat that Mg-Gd intermediate alloys, Mg-Al intermediate alloys, Mg-Mn intermediate alloys are complete 750 DEG C are warming up to after being dissolved in liquid magnesium solution, is then incubated 20min, obtains intermediate product;
Wherein, Gd mass fraction is for the mass fraction of Al in 30%, Mg-Al intermediate alloys in Mg-Gd intermediate alloys Mn mass fraction is 30% in 30%, Mg-Mn intermediate alloy;
Step 3.3, the pure Ni weighed in step 2 and pure Cu be added in the intermediate product obtained through step 3.2, treated pure After Ni and pure Cu is cmpletely dissolved in intermediate product, stirs and pull down surface slag, obtain magnesium alloy solution;
Wherein, pure magnesium, pure Cu, pure Ni purity are 99.9%;
Step 3.4, the magnesium alloy solution obtained through step 3.3 is cooled to 720 DEG C, insulation stands 25min, is cast to mould In tool, magnesium alloy is obtained.
Prepared by the method for the present invention into embodiment 2, embodiment 3 and other alloys to be contrasted, comparative alloy is:Mg- 6Al-1Zn- (0.2-0.4) Zr- (0.1-0.3) Mn (mass fraction), contrast magnesium alloy derive from manufacturer, are processed into For tensile sample, and mechanical property is tested, such as table 1 of the tensile strength in room temperature:
By the performance parameter value and Fig. 1 and Fig. 2 of comparing embodiment and comparative example, it can be seen that:Casting prepared by the present invention Make the tensile strength of magnesium alloy and have compared with comparative example and significantly improve, improve its mechanical property, optimize metallurgical structure, In being more widely applied for Practical Project field.
As Fig. 3 and Fig. 4 metallographic structure photos can see, substantial amounts of LPSO phases therefore its mechanics is dispersed with magnesium matrix Performance is improved.
Influence of the nickel element to Corrosion Behaviors of Magnesium Alloys speed is understood by Fig. 5 and Fig. 6, with the increase magnesium alloy of nickel element content Corrosion rate can accelerate.
By the above-mentioned means, instrument magnesium alloy is temporarily blocked up in a kind of oil-gas mining of the present invention, change the knot of tissue of magnesium alloy Structure, the tensile strength of alloy is improved, by adding the alloying element Gd of certain mass percentage in the form of intermediate alloy, and With the addition of can improve Cu, Ni element of magnesium alloy mechanical property, while being capable of crystal grain thinning;Instant component reasonable mixture ratio, Simple production process, the bulk strength of magnesium alloy can be effectively improved, improve its mechanical property, a kind of oil gas of the invention is opened The method that the preparation method of temporarily stifled instrument magnesium alloy uses melting and casting is adopted, by regulating and controlling the composition and preparation technology of alloy, Novel magnesium alloy can be obtained, the alloy meets the requirement in Practical Project field, formed can the casting magnesium of practical application in industry close Gold and preparation method thereof.

Claims (5)

1. instrument magnesium alloy is temporarily blocked up in a kind of oil-gas mining, it is characterised in that is made up of according to mass percent raw material:
Gd 2%-10%, Ni 0%-5%, Cu 0%-5%, Mn 0.05%-0.1%, Al 0.05%-0.1%, remaining into It is divided into Mg, above material quality summation is 100%.
2. the preparation method of instrument magnesium alloy is temporarily blocked up in a kind of oil-gas mining as claimed in claim 1, it is characterised in that according to Following steps are implemented:
Step 1, smelting equipment is pre-processed, specific method is as follows:
In smelting equipment external coating last layer zinc oxide coating, and equipment is heated, heating-up temperature is 200 DEG C, insulation 2h, coverture is heated to 100 DEG C of insulation 1h, for removing moisture removal;
Step 2, following raw material are weighed respectively:
Pure nickel 0-5%, fine copper 0-5%, Mg-Gd intermediate alloy 6.67%-33.3%, Mg-Al intermediate alloy 0.167%- Dehumidification treatments are dried in raw material by 0.33%, Mg-Mn intermediate alloy 0.167%-0.33%;
Step 3, the raw material weighed in step 2 are placed in the smelting equipment that step 1 pre-processes, oil-gas mining is obtained through refining Temporarily stifled instrument magnesium alloy, specifically implements according to following steps:
Step 3.1, the pure Mg for weighing step 2 are added in crucible, surface addition coverture, pure Mg are covered, then by crucible It is warming up to 720 DEG C and treats that pure Mg is completely dissolved, is then incubated 20min-25min, obtains liquid magnesium solution;
Step 3.2, by the Mg-Gd intermediate alloys weighed in step 2, Mg-Al intermediate alloys, Mg-Mn intermediate alloys be added to through In the liquid magnesium solution that step 3.1 obtains, treat that Mg-Gd intermediate alloys, Mg-Al intermediate alloys, Mg-Mn intermediate alloys are completely dissolved 750 DEG C are warming up to after in liquid magnesium solution, is then incubated 10min-20min, obtains intermediate product;
Step 3.3, the pure Ni weighed in step 2 and pure Cu be added in the intermediate product obtained through step 3.2, treat pure Ni and After pure Cu is cmpletely dissolved in intermediate product, stirs and pull down surface slag, obtain magnesium alloy solution;
Step 3.4, the magnesium alloy solution obtained through step 3.3 is cooled to 710-720 DEG C, insulation stands 20-25min, casting Into mould, magnesium alloy is obtained.
3. the preparation method of instrument magnesium alloy is temporarily blocked up in a kind of oil-gas mining as claimed in claim 2, it is characterised in that described Gd mass fraction is 30% in Mg-Gd intermediate alloys, and Al mass fraction is 30% in the Mg-Al intermediate alloys, described Mn mass fraction is 30% in Mg-Mn intermediate alloys.
4. the preparation method of instrument magnesium alloy is temporarily blocked up in a kind of oil-gas mining as claimed in claim 2, it is characterised in that in institute State in step 2, the process of desiccant dehumidification processing is specific as follows:Raw material are first heated to temperature as 200 DEG C, then are incubated 2h.
5. the preparation method of instrument magnesium alloy is temporarily blocked up in a kind of oil-gas mining as claimed in claim 2, it is characterised in that the step In rapid 3.1:The coverture is obtained after mixing by following raw material:MgCl241-47%, KCl 33-39%, BaCl2 4- 10%, CaF21-7%, CaCl21-7%, NaCl 1-7%, MgO 1-7%, impurity 1.5%, H2O 0.5%, above raw material Gross mass is 100%.
CN201710844643.8A 2017-09-19 2017-09-19 Instrument magnesium alloy and preparation method thereof is temporarily blocked up in a kind of oil-gas mining Pending CN107502802A (en)

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CN109988955A (en) * 2019-04-22 2019-07-09 重庆科技学院 A kind of high-elongation low temperature fast degradation magnesium alloy and preparation method thereof
CN110106416A (en) * 2019-05-24 2019-08-09 山东省科学院新材料研究所 A kind of superhigh intensity can dissolve magnesium alloy and its preparation method and application
CN111041309A (en) * 2019-12-08 2020-04-21 江苏奇纳新材料科技有限公司 Soluble magnesium-based alloy and preparation method thereof
CN111549268A (en) * 2020-05-28 2020-08-18 太原科技大学 High-plasticity soluble Mg-Gd-based magnesium alloy and preparation method thereof

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CN102187004A (en) * 2008-09-30 2011-09-14 镁电子有限公司 Magnesium alloys containing rare earths
CN104388715A (en) * 2014-12-15 2015-03-04 春兴精工(常熟)有限公司 Preparation method of high-yield-strength magnesium alloy
DE102015120514A1 (en) * 2015-11-26 2017-06-01 Syntellix Ag Bioresorbable fixation nail

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CN102187004A (en) * 2008-09-30 2011-09-14 镁电子有限公司 Magnesium alloys containing rare earths
CN104388715A (en) * 2014-12-15 2015-03-04 春兴精工(常熟)有限公司 Preparation method of high-yield-strength magnesium alloy
DE102015120514A1 (en) * 2015-11-26 2017-06-01 Syntellix Ag Bioresorbable fixation nail

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109988955A (en) * 2019-04-22 2019-07-09 重庆科技学院 A kind of high-elongation low temperature fast degradation magnesium alloy and preparation method thereof
CN110106416A (en) * 2019-05-24 2019-08-09 山东省科学院新材料研究所 A kind of superhigh intensity can dissolve magnesium alloy and its preparation method and application
CN111041309A (en) * 2019-12-08 2020-04-21 江苏奇纳新材料科技有限公司 Soluble magnesium-based alloy and preparation method thereof
CN111041309B (en) * 2019-12-08 2020-10-16 江苏奇纳新材料科技有限公司 Soluble magnesium-based alloy and preparation method thereof
CN111549268A (en) * 2020-05-28 2020-08-18 太原科技大学 High-plasticity soluble Mg-Gd-based magnesium alloy and preparation method thereof

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