CN106086323A - High performance aluminum-magnesium alloy steel screw connector and preparation method thereof - Google Patents
High performance aluminum-magnesium alloy steel screw connector and preparation method thereof Download PDFInfo
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- CN106086323A CN106086323A CN201610549109.XA CN201610549109A CN106086323A CN 106086323 A CN106086323 A CN 106086323A CN 201610549109 A CN201610549109 A CN 201610549109A CN 106086323 A CN106086323 A CN 106086323A
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- refining
- aluminum
- screw connector
- magnesium
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Classifications
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0093—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for screws; for bolts
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/60—Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F3/00—Brightening metals by chemical means
- C23F3/04—Heavy metals
- C23F3/06—Heavy metals with acidic solutions
Abstract
nullThe invention discloses a kind of high performance aluminum-magnesium alloy steel screw connector，It is characterized in that，Including following parts by weight of component: carbon 0.26 0.34、Aluminum 1.17 0.25、Magnesium 1.05 1.14、Lead 0.15 0.25、Cadmium 0.03 0.05、Phosphorus zinc 0.011 0.022、Vanadium 0.073 0.14、Tungsten 0.032 0.045、Tellurium 0.07 0.08、Slag modifier for refining 20 25、Surplus Fe and inevitable impurity，Described slag modifier for refining is composed of the following raw materials by weight: bauxite 20 45、Marble 15 25、Quartz sand 19 44、Barium 5 10、Active lime 10 11、Fluorgypsum 9 10、Silicon powder 48、Electric smelting magnesium powder 67、Albite 5 10、Aluminum shot 25.Oxygen blast gas and carbon dioxide gas mixture in fusion process of the present invention, to improve dephosphorization effect, improve casting nut performance.
Description
Technical field
The present invention relates to machine components manufacture field, particularly relate to a kind of high performance aluminum-magnesium alloy steel screw connector and
Preparation method.
Background technology
Nut is exactly nut, is threaded together the part for playing the role of fastening, all manufacturing machines with bolt or screw rod
Tool must a kind of element according to the difference of material, be divided into several big types such as carbon steel, rustless steel, non-ferrous metal (such as copper).Example
As: self-locking nut, stop nut, locking nut, four paws nut, nut, nut, screw-in nut lock nut, thin bar screw are even
Connected nut self-locking hexagonal acorn nut, special fot screw nut, hexagonal crown thin nut, eyenut.Embedded annular knurl
The main operating type of copper nut is injection, is embedded into inside working of plastics or direct mold injection, if using mould after heating
Tool injection, the fusing point of PA/NYLOY/PET is all at 200 ° of more than C, and after inserted num is entered plastic by hot melt, temperature uprises rapidly, note
After molded, the rapid crystallisation by cooling of plastic body is hardening, if inserted num temperature is also in high temperature, that is possible to down to copper spiral shell
Female place contacted with working of plastics starts to get loose or crack occur.So all using the spiral shell of copper material in the injection of inserted num
Mother rather than carbon steel nut.
The intensity of nut and service life and the founding materials of bolt, and the various trace alloying elements in founding materials
The inseparable relation that has of quantity, the constituent that the Steel material that traditional bolt is used exists alloying element is mixed and disorderly,
Due effect can not be played, and traditional method for making steel there is also defect, cause the impurity in molten steel to be difficult to remove, affect spiral shell
Female many-sided mechanical performance, the especially using method of slag modifier for refining molten steel is improper, Chinese patent slag modifier for refining molten steel:
Application number: indicate a kind of slag modifier for refining molten steel in the patent document of 00107235.8, it contain (weight %): CaO20～
45%, Al2O320～45%, in metal Al, Si, Ca, Ba, Re one or more 5～15%, CaF24～6%, SiO2≤10%,
MgO≤10%.This slag modifier for refining can have the structure of fritting solid solution.The molten steel processed with this slag modifier for refining contains very
Low sulfur, oxygen and field trash, but to there is composition kind few for the slag modifier for refining in file, and preparation method is simple, it is difficult to reach
To preferable effect, and method is single, does not point out the scheme being combined with each other with other processing methods, does not the most point out simultaneously
Its follow-up machine casting and the complete supporting technology scheme of processing technique, herein in conjunction with prior art, provide raising nut whole
The complete machining technique of body mechanical performance.
Summary of the invention
The object of the invention is contemplated to make up the defect of prior art, it is provided that a kind of oxygen blast gas and dioxy in fusion process
Change carbon mixed gas, to improve dephosphorization effect, improve casting nut performance high performance aluminum-magnesium alloy steel screw connector and
Preparation method.
The present invention is achieved by the following technical solutions:
A kind of high performance aluminum-magnesium alloy steel screw connector, it is characterised in that include following parts by weight of component: carbon 0.26-0.34,
Aluminum 1.17-0.25, magnesium 1.05-1.14, lead 0.15-0.25, cadmium 0.03-0.05, phosphorus zinc 0.011-0.022, vanadium 0.073-0.14,
Tungsten 0.032-0.045, tellurium 0.07-0.08, slag modifier for refining 20-25, surplus Fe and inevitably impurity, described refine residue adjustment
Agent is composed of the following raw materials by weight: bauxite 20-45, marble 15-25, quartz sand 19-44, barium 5-10, active lime 10-
11, fluorgypsum 9-10, silicon powder 4-8, electric smelting magnesium powder 6-7, albite 5-10, aluminum shot 2-5；The preparation side of described slag modifier for refining
Method is: bauxite, marble, silicon powder, electric smelting magnesium powder, quartz sand, barium, active lime, fluorgypsum, albite, aluminum shot are added
Appropriate water mixing, then make spherical, it being then placed in shaft furnace making fuel fritting with coke, prefusing temperature is 1400-1500 DEG C,
Being stirred for uniformly, liquid slag quickly cools down through liquid nitrogen again, places into grinding in ball grinder powdered and get final product.
The preparation method of described high performance aluminum-magnesium alloy steel screw connector, it is characterised in that comprise the following steps:
(1) material carbon by weight, aluminum, magnesium, lead, cadmium, zinc, vanadium, tungsten, tellurium and ferrum are put into preheating furnace, by pre-for melting raw material
Heat carries out melting to putting into after 250 DEG C-350 DEG C in induction furnace, control temperature at 1500-1600 DEG C, aluminum matter reducing agent successively,
Calcareous metallurgic auxiliary materials, then with inert material banking mouth；
(2) carbon dioxide in liquid carbon dioxide gas cylinder is transported in cryogenic liquid vaporizer by bus-bar, places into
In buffering air accumulator, standby, fusion process is blown in furnace hearth the mixed gas of oxygen and carbon dioxide, and carries out simultaneously
The stirring of 2-5 furnace bottom, melt agitated uniformly after sample immediately, carry out on-the-spot sample analysis, probe temperature must not be less than 1400 DEG C, root
According to the result of sample analysis, carry out desulfurization, deoxidation, add that part slag modifier for refining carries out initial refining, rear interval 30-35 divides
Zhong Houzai is added remaining slag modifier for refining and carries out double refining, it is thus achieved that molten steel；
(3) being put into by swage in fuse kiln and heat, carry out moulding the most one by one, control temperature, at 200-230 DEG C, utilizes low pressure
Fluidised form precoated sand is blown into die cavity by 0.4-0.5MPa compressed air, covers uniformly, molten steel is poured into casting in swage and forms nut
Connector blank；
(4) screw connector blank is heated to 400-450 DEG C, keeps 3-4 hour, then in 30-40 minute, be warming up to 750-
800 DEG C, carry out quenching with quenching oil cold, but, then carry out being tempered 35-45 at 380-400 DEG C by the screw connector after quenching
Minute, then from tempering furnace, take out cooling in the tempering oil putting into 280-300 DEG C, the screw connector after heat treatment is carried out car
Cut processing, it is thus achieved that finished product；
(5) placing products in polishing mother solution and carry out chemical polishing process, to obtain final product, described polishing fluid uses following parts by weight of component
Mix: Fluohydric acid. is 10-11, nitric acid 60-61, sulphuric acid are 20-23, hydrochloric acid 10-15, emulsifying agent 20-24.
The present invention adds the trace alloying elements such as carbon, aluminum, magnesium, lead, cadmium, zinc, vanadium, tungsten, tellurium on the basis of high-carbon steel, this
Sample cadmium, zinc, the interpolation of vanadium add the overall mechanical properties of nut, and the interpolation that with the addition of the element such as tungsten, tellurium maintains nut
Body has the strongest shock resistance, and the present invention uses slag modifier for refining to be used for the melting of molten steel, can make the impurity in molten steel
Lower further, improve the purity of molten steel, take out oxide inclusion, by repeatedly refine and sample analysis technology, strictly control
The quality of molten steel, and the present invention uses swage to cover husky technique, firm performance transition magnesium iron graphitization in process of setting of swage is swollen
Swollen direction, is become inward expansion from outward expansion, it is achieved that graphitization expansion is from feeding head-free casting；It is thin owing to covering layer of sand,
Die cavity is unlikely to deform, and causes the precision of foundry goods to greatly improve；The existence covering layer of sand improves the service life of foundry goods, reduces life
Produce cost；The present invention replaces partial oxidation to reduce thermal discharge with each element reaction in molten iron by being blown into carbon dioxide, so that
Primary period temperature is effectively controlled, beneficially converter molten pool dephosphorization；And the carbon dioxide reinforcement melting bath stirring being blown into, improve
The dynamic conditions of slag interface reaction, due to the temperature control function of carbon dioxide, makes the converter dephosphorization phase extend.
Detailed description of the invention
A kind of high performance aluminum-magnesium alloy steel screw connector, it is characterised in that include following parts by weight of component: carbon 0.26-
0.34, aluminum 1.17-0.25, magnesium 1.05-1.14, lead 0.15-0.25, cadmium 0.03-0.05, phosphorus zinc 0.011-0.022, vanadium 0.073-
0.14, tungsten 0.032-0.045, tellurium 0.07-0.08, slag modifier for refining 20-25, surplus Fe and inevitable impurity, described essence
Refining slag adjusting agent is composed of the following raw materials by weight: bauxite 20-45, marble 15-25, quartz sand 19-44, barium 5-10, activity
Calx 10-11, fluorgypsum 9-10, silicon powder 4-8, electric smelting magnesium powder 6-7, albite 5-10, aluminum shot 2-5；Described slag modifier for refining
Preparation method be: by long to bauxite, marble, silicon powder, electric smelting magnesium powder, quartz sand, barium, active lime, fluorgypsum, sodium
Stone, aluminum shot add appropriate water mixing, then make spherical, are then placed in shaft furnace making fuel fritting with coke, and prefusing temperature is
1400-1500 DEG C, being stirred for uniformly, liquid slag quickly cools down through liquid nitrogen again, places into grinding in ball grinder powdered i.e.
?.
The preparation method of described high performance aluminum-magnesium alloy steel screw connector, it is characterised in that comprise the following steps:
(1) material carbon by weight, aluminum, magnesium, lead, cadmium, zinc, vanadium, tungsten, tellurium and ferrum are put into preheating furnace, by pre-for melting raw material
Heat carries out melting to putting into after 250 DEG C-350 DEG C in induction furnace, control temperature at 1500-1600 DEG C, aluminum matter reducing agent successively,
Calcareous metallurgic auxiliary materials, then with inert material banking mouth；
(2) carbon dioxide in liquid carbon dioxide gas cylinder is transported in cryogenic liquid vaporizer by bus-bar, places into
In buffering air accumulator, standby, fusion process is blown in furnace hearth the mixed gas of oxygen and carbon dioxide, and carries out simultaneously
The stirring of 2-5 furnace bottom, melt agitated uniformly after sample immediately, carry out on-the-spot sample analysis, probe temperature must not be less than 1400 DEG C, root
According to the result of sample analysis, carry out desulfurization, deoxidation, add that part slag modifier for refining carries out initial refining, rear interval 30-35 divides
Zhong Houzai is added remaining slag modifier for refining and carries out double refining, it is thus achieved that molten steel；
(3) being put into by swage in fuse kiln and heat, carry out moulding the most one by one, control temperature, at 200-230 DEG C, utilizes low pressure
Fluidised form precoated sand is blown into die cavity by 0.4-0.5MPa compressed air, covers uniformly, molten steel is poured into casting in swage and forms nut
Connector blank；
(4) screw connector blank is heated to 400-450 DEG C, keeps 3-4 hour, then in 30-40 minute, be warming up to 750-
800 DEG C, carry out quenching with quenching oil cold, but, then carry out being tempered 35-45 at 380-400 DEG C by the screw connector after quenching
Minute, then from tempering furnace, take out cooling in the tempering oil putting into 280-300 DEG C, the screw connector after heat treatment is carried out car
Cut processing, it is thus achieved that finished product；
(5) placing products in polishing mother solution and carry out chemical polishing process, to obtain final product, described polishing fluid uses following parts by weight of component
Mix: Fluohydric acid. is 10-11, nitric acid 60-61, sulphuric acid are 20-23, hydrochloric acid 10-15, emulsifying agent 20-24.
Claims (2)
1. a high performance aluminum-magnesium alloy steel screw connector, it is characterised in that include following parts by weight of component: carbon 0.26-
0.34, vanadium 0.073-0.14, phosphorus zinc 0.011-0.022, aluminum 1.17-0.25, magnesium 1.05-1.14, lead 0.15-0.25, cadmium 0.03-
0.05, tungsten 0.032-0.045, tellurium 0.07-0.08, slag modifier for refining 20-25, surplus Fe and inevitable impurity, described essence
Refining slag adjusting agent is composed of the following raw materials by weight: bauxite 20-45, marble 15-25, quartz sand 19-44, barium 5-10, activity
Calx 10-11, fluorgypsum 9-10, silicon powder 4-8, electric smelting magnesium powder 6-7, albite 5-10, aluminum shot 2-5；Described slag modifier for refining
Preparation method be: by long to bauxite, marble, silicon powder, electric smelting magnesium powder, quartz sand, barium, active lime, fluorgypsum, sodium
Stone, aluminum shot add appropriate water mixing, then make spherical, are then placed in shaft furnace making fuel fritting with coke, and prefusing temperature is
1400-1500 DEG C, being stirred for uniformly, liquid slag quickly cools down through liquid nitrogen again, places into grinding in ball grinder powdered i.e.
?.
2. the preparation method of high performance aluminum-magnesium alloy steel screw connector as claimed in claim 1, it is characterised in that include following
Step:
(1) material carbon by weight, aluminum, magnesium, lead, cadmium, zinc, vanadium, tungsten, tellurium and ferrum are put into preheating furnace, by pre-for melting raw material
Heat carries out melting to putting into after 250 DEG C-350 DEG C in induction furnace, control temperature at 1500-1600 DEG C, aluminum matter reducing agent successively,
Calcareous metallurgic auxiliary materials, then with inert material banking mouth；
(2) carbon dioxide in liquid carbon dioxide gas cylinder is transported in cryogenic liquid vaporizer by bus-bar, places into
In buffering air accumulator, standby, fusion process is blown in furnace hearth the mixed gas of oxygen and carbon dioxide, and carries out simultaneously
The stirring of 2-5 furnace bottom, melt agitated uniformly after sample immediately, carry out on-the-spot sample analysis, probe temperature must not be less than 1400 DEG C, root
According to the result of sample analysis, carry out desulfurization, deoxidation, add that part slag modifier for refining carries out initial refining, rear interval 30-35 divides
Zhong Houzai is added remaining slag modifier for refining and carries out double refining, it is thus achieved that molten steel；
(3) being put into by swage in fuse kiln and heat, carry out moulding the most one by one, control temperature, at 200-230 DEG C, utilizes low pressure
Fluidised form precoated sand is blown into die cavity by 0.4-0.5MPa compressed air, covers uniformly, molten steel is poured into casting in swage and forms nut
Connector blank；
(4) screw connector blank is heated to 400-450 DEG C, keeps 3-4 hour, then in 30-40 minute, be warming up to 750-
800 DEG C, carry out quenching with quenching oil cold, but, then carry out being tempered 35-45 at 380-400 DEG C by the screw connector after quenching
Minute, then from tempering furnace, take out cooling in the tempering oil putting into 280-300 DEG C, the screw connector after heat treatment is carried out car
Cut processing, it is thus achieved that finished product；
(5) placing products in polishing mother solution and carry out chemical polishing process, to obtain final product, described polishing fluid uses following parts by weight of component
Mix: Fluohydric acid. is 10-11, nitric acid 60-61, sulphuric acid are 20-23, hydrochloric acid 10-15, emulsifying agent 20-24.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610549109.XA CN106086323A (en) | 2016-07-13 | 2016-07-13 | High performance aluminum-magnesium alloy steel screw connector and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610549109.XA CN106086323A (en) | 2016-07-13 | 2016-07-13 | High performance aluminum-magnesium alloy steel screw connector and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106086323A true CN106086323A (en) | 2016-11-09 |
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ID=57219904
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610549109.XA Pending CN106086323A (en) | 2016-07-13 | 2016-07-13 | High performance aluminum-magnesium alloy steel screw connector and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106636926A (en) * | 2017-01-06 | 2017-05-10 | 芜湖市金贸流体科技股份有限公司 | Corrosion and discoloration resisting alloy nut connecting piece and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1324278A (en) * | 1998-09-04 | 2001-11-28 | 联结技术两合公司 | Light alloy thread-forming screw and its prodn. method |
| CN102227512A (en) * | 2009-11-17 | 2011-10-26 | 新日本制铁株式会社 | Steel wire for low-temperature annealing and method for producing same |
-
2016
- 2016-07-13 CN CN201610549109.XA patent/CN106086323A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1324278A (en) * | 1998-09-04 | 2001-11-28 | 联结技术两合公司 | Light alloy thread-forming screw and its prodn. method |
| CN102227512A (en) * | 2009-11-17 | 2011-10-26 | 新日本制铁株式会社 | Steel wire for low-temperature annealing and method for producing same |
Non-Patent Citations (2)
| Title |
|---|
| 李玉杰 等: ""600MW超临界机组锅炉管道支吊架管夹螺栓断裂原因分析和防范措施"", 《广东电力》 * |
| 梁爱兰: ""升船机螺母柱的铸造工艺设计及生产质量控制"", 《铸造设备与工艺》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106636926A (en) * | 2017-01-06 | 2017-05-10 | 芜湖市金贸流体科技股份有限公司 | Corrosion and discoloration resisting alloy nut connecting piece and preparation method thereof |
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Application publication date: 20161109 |
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