CN106636697A - Aluminum strontium alloy production process - Google Patents
Aluminum strontium alloy production process Download PDFInfo
- Publication number
- CN106636697A CN106636697A CN201611130928.7A CN201611130928A CN106636697A CN 106636697 A CN106636697 A CN 106636697A CN 201611130928 A CN201611130928 A CN 201611130928A CN 106636697 A CN106636697 A CN 106636697A
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- China
- Prior art keywords
- bar
- strontium
- alloy production
- production technology
- aluminium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/04—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of bars or wire
Abstract
The invention belongs to the technical field of production of aluminum strontium alloys, and discloses an aluminum strontium alloy production process. The aluminum strontium alloy production process comprises the steps of batching, smelting, casting and extrusion-forming. The aluminum strontium alloy production process is characterized in that the extrusion forming process comprises the following steps of 1) arranging an excess material cavity between a straight-tube-shaped forming mold and a bar accommodating cavity, wherein the excess material cavity takes the shape of a frustum, the diameter of the bottom surface of the frustum is 30 mm, the taper of the frustum is 1/3, the excess material cavity and the forming mold are coaxial, and the bottom surface of the excess material cavity is close to the forming mold; and 2) putting an aluminum strontium bar, formed through casting, into the excess material cavity, extruding the aluminum strontium bar to form a wire rod through the forming mold, and putting another bar to continue extruding when the remaining height of the bar is 10-20 mm. According to the aluminum strontium alloy production process, the technical problems that the existing production process cannot implement continuous extrusion and the efficiency is low are solved.
Description
Technical field
The invention belongs to al-sr alloy production technical field, and in particular to a kind of al-sr alloy production technology.
Background technology
As its name suggests, al-sr alloy is that essential element is metallic aluminium and the alloy of Preparation of Metallic Strontium.The section bar of al-sr alloy includes
Sheet material, bar and wire rod etc..The production technology of wherein al-sr alloy wire rod generally includes dispensing, melting, casting and extrusion molding.
Suitable simple substance aluminum feedstock and simple substance strontium raw material are chosen, dispensing is carried out as desired, then by both meltings and is cast into aluminium strontium
Alloy bar material, finally by al-sr alloy bar extruding into al-sr alloy wire rod.
In existing production technology, thermoplastic al-sr alloy bar is typically positioned over mould by extrusion molding
In outer bar accommodating chamber, as shown in figure 1, mould（2）With bar accommodating chamber（1）It is straight-tube shape and both is coaxial, is
The al-sr alloy bar is avoided radially to be deformed, bar accommodating chamber（1）Radial dimension and al-sr alloy bar
Radial dimension is identical, makes al-sr alloy enter to mould by extruding of the extrusion head to al-sr alloy bar（2）Middle extruding
Shaping, in order to avoid the bar for softening is from extrusion head and bar accommodating chamber（1）Between gap extrusion, the radial dimension of extrusion head
With bar accommodating chamber（1）Radial dimension it is also identical.
When extrusion molding is operated, extrusion head is with al-sr alloy bar away from mould（2）One end offset, to aluminium strontium close
Golden bar applies pressure, and the al-sr alloy bar of softening occurs the deformation of axial direction, progresses into mould（2）Die cavity
In, and extrude from the other end of shaping mold cavity, form the less al-sr alloy wire rod of size.With the extrusion of wire rod, bar
Highly it is gradually reduced, when the height of bar is decreased to a certain degree, remaining bar can be pressed against mould by extrusion head
（2）End, the remaining bar cannot be extruded into mould（2）Middle shaping, due to bar accommodating chamber（1）Restriction,
Also cannot move out, separate with wire rod, finally be retained in extrusion head and mould（2）Between, it is extruded together as bulk,
Form the discard waste material of wire rod.If not clearing up the discard waste material, the wire rod of shaping cannot the demoulding, and to the discard waste material
Cleared up, extrusion molding on the one hand can be caused to be carried out continuously, the efficiency of extrusion molding is low, on the other hand, be shaped to block
When the discard waste recovery of shape is recycled, in addition it is also necessary to which reheating carries out melting, troublesome poeration.
The content of the invention
The invention is intended to a kind of al-sr alloy production technology is provided, cannot continuously extruded, effect to solve existing production technology
The low technical problem of rate.
Al-sr alloy production technology in this programme, including dispensing, melting, casting and extrusion molding, it is characterised in that squeeze
It is molded to be：
Step 1）, between straight-cylindrical mould and bar accommodating chamber arrange clout die cavity, clout die cavity be shaped as cone
Platform shape, the basal diameter of taper type is 30mm, and the taper of taper is 1/3, and clout die cavity is coaxial with mould, and clout die cavity
Bottom surface near mould；
Step 2）, by casting formed aluminium strontium bar be put into clout die cavity, aluminium strontium bar is extruded, make aluminium strontium bar
Wire rod is squeezed into by mould, when the remaining height of bar is 10-20mm, next bar is put into and is continued to extrude.
Taper type refers to that cone removes remaining part behind tip, and the bottom surface of taper type refers to the bottom surface of cone, frustum
The top of shape refers to one end relative with bottom surface in cone.
The know-why and technique effect of this programme al-sr alloy production technology be：
Al-sr alloy bar is put into clout die cavity by bar accommodating chamber from the top of clout die cavity, extrusion head is from bar
Enter in accommodating chamber and apply pressure to al-sr alloy bar, the bar in clout die cavity enters to shaping mould under extruding force effect
Extrusion molding in tool.When the remaining height of bar is 10-20mm, next bar is put into, continues to extrude, previous bar is under
Under the extruding of a piece bar, extrusion molding is gone successively into mould, at the same time, due to the rod in clout die cavity
There is cavity more than material is circumferential, bar can deform to circumferential projection, especially, end of the previous bar outside mould is outside
Can move towards the direction of bar accommodating chamber along the inwall of clout die cavity after projection, next bar be wrapped, Er Qiehui
The next bar to softening carries out the inside extruding of radial direction, thus before and after two bars under radial and axial Double Pressures
Can be merged, realize to the continuously extruded of bar.This kind of fashion of extrusion, previous bar will not produce discard waste material, meeting
Continuously extrude with latter bar, thus, saved cleaning discard waste material and processed the time of discard waste material.
And in the prior art, technical staff in order to avoid bar extrude to circumferential deformation by inconvenience, or avoid bar
It is extruded from feed end, all can keeps in mind positioned at the cavity for accommodating, conveying al-sr alloy bar of mould feed end
The straight-tube shape consistent with al-sr alloy bar is dimensioned to, and accommodate the cavity of bar to be designed to simple straight-tube shape is skill
Art personnel are according to the most conventional selection of existing thinking, however, such design the generation that the deficiency brought is exactly discard waste material,
Even if with reference to the technological means in this programme, whne the remaining height of bar for 10-20mm when, be just put into next bar, in front and back two
Root bar simply will not be merged under the pressure of axial direction, when previous bar is extruded into last, positioned inside material
Can enter in mould, but because the amount of material is less, inconvenience is shaped to complete wire rod, and material outside due to
Latter bar is not merged, latter bar to its without can be drained to inner side intermolecular force,
It inwardly will not flow side, because bar accommodates the restriction of cavity wall, also will not flow laterally, therefore, it is only possible to stop
At next between bar and mould, discard waste material is formed, affect the demoulding of previous wire rod and squeezing for latter wire rod
Go out, therefore, after often having extruded a bar, just discard waste material must be cleared up, cause low production efficiency, troublesome poeration.
The following is the preferred version based on above-mentioned base case：
Preferred version one：The step 1）In, the basal diameter of taper type is 30mm, and the taper of taper type is 1/3, taper type
Highly it is 30mm.
Preferred version two：Based on base case or preferred version one, the step 2）In, treat that the remaining height of bar is 15mm
When, it is put into next bar and continues to extrude.
Preferred version three：Based on preferred version two, the melting is：
Step 1）, aluminium liquid is heated into 771-850 DEG C；
Step 2）, by specific purpose tool strontium ingot is pressed into aluminium liquid, until strontium ingot melts completely, specific purpose tool includes support bar,
Support bar lower end is provided with pressure cover, and multiple through holes are distributed with the wall for pressing cover.In prior art typically directly by strontium ingot put into
In aluminium liquid, the density of strontium is 2.54*103kg/m3, the density of aluminium is 2.7*103kg/m3, strontium can float upwards after putting into aluminium liquid
It is floating, with air contact, at high temperature, easily it is burnt.And in this programme strontium ingot is pressed into aluminium liquid bottom using pressure cover, a side
Face can avoid strontium ingot from floating up and air contact and scaling loss, another aspect strontium spindle position inside aluminium liquid, around by high temperature
Aluminium liquid is surrounded, it is easier in being melted in aluminium liquid.And strontium ingot is during melting, reaction is violent, is pressed using pressure cover
Inside aluminium liquid, compared to by an independent depression bar, for it presses, strontium ingot constantly will not upwards float and cause
Need repeatedly to press.Multiple through holes are distributed with the wall of pressure cover, through hole can be easy to the circulation of aluminium liquid and strontium liquid and heat
Transmission, is beneficial to the quick melting of strontium ingot.
Preferred version four：Based on preferred version three, during the melting, it is passed through nitrogen into aluminium liquid and is refined.
Nitrogen refining can remove the oxygen in aluminium liquid, it is to avoid metallic aluminium and Preparation of Metallic Strontium are aoxidized, and affect alloy property, also can be avoided because of aluminium liquid
There is oxygen and caused scaling loss in inside.
Preferred version five：Based on preferred version four, the airway connected with pressure cover is provided with the support bar, nitrogen passes through
The airway is passed through into aluminium liquid.Thus it is capable of achieving that nitrogen is passed through into aluminium liquid, at the same time, nitrogen is passed through to pressure cover
It is interior, the liquid in pressure cover can be stirred, it is easy to the melting of strontium ingot, also allow for the circulation of liquid and the transmission of heat.
Preferred version six：Based on preferred version three or four or five, during the melting, strontium ingot is pressed into aluminium liquid
Meanwhile, stir aluminium liquid using specific purpose tool.In order to the mixing of metallic aluminium and Preparation of Metallic Strontium, the operation of extra stirring is reduced, by
The use of specific purpose tool in this present invention dexterously can realize multiple functions simultaneously：1st, strontium ingot is pressed into inside aluminium liquid, it is to avoid
The scaling loss of strontium ingot；2nd, nitrogen is passed through in aluminium liquid, aluminium liquid is refined, at the same time, circulation and the heat of liquid can be strengthened
Transmission, accelerate strontium ingot melting；3rd, liquid is stirred, is easy to the mixing of two kinds of metals.
Description of the drawings
Fig. 1 is the structural representation of extrusion molding dies in prior art；
Fig. 2 is the structural representation of extrusion molding dies in the embodiment of the present invention.
Specific embodiment
Below by specific embodiment, the present invention is further detailed explanation：
Al-sr alloy production technology, including dispensing, melting, casting and the procedure of extrusion molding four.Wherein：
Dispensing：Aluminium ingot and strontium ingot are chosen, according to 1:10 ratio weighs 100kg strontiums ingot and 1000kg aluminium ingots, carries out dispensing.
Melting：
Step 1）, aluminium ingot is put into smelting furnace, heat up, make aluminium ingot be fused into aluminium liquid；
Step 2）, the temperature of aluminium liquid risen into 771-850 DEG C, strontium ingot is pressed into aluminium liquid using specific purpose tool, specific purpose tool
Including support bar, support bar lower end is provided with pressure cover, and the airway connected with pressure cover is provided with support bar, is evenly equipped with the wall for pressing cover
Multiple through holes.Strontium ingot is pressed into during into aluminium liquid melting strontium ingot, using specific purpose tool aluminium liquid is stirred, at the same time,
Nitrogen is passed through by the airway in support bar in aluminium liquid to be refined, until strontium ingot melts complete.
Casting：By the solution slag hitting of above-mentioned melting, after standing 5 minutes, cylindrical aluminium strontium alloy rod to be extruded is cast into
Material, 4 kilograms/root of bar, a diameter of 20mm of bar is highly 400mm；It is water-cooled.
Extrusion molding：
Step 1）, as shown in Fig. 2 arranging clout die cavity 2, shaping mould between straight-cylindrical mould 3 and bar accommodating chamber 1
The height of tool 3 is 10mm, a diameter of 9.8mm；Clout die cavity 2 is shaped as taper type, and the basal diameter of taper type is 30mm, top
A diameter of 20mm is held, the taper of taper is 1/3, and the bottom surface of clout die cavity 2 is near mould 3；The discharge end of mould 3 sets
There is discharging mode 4, discharging mode 4 is taper type, and the basal diameter of discharging mode 4 is 20mm, and top end diameter is 9.8mm, discharging mode 4
Highly it is 35mm.Bar accommodating chamber 1, clout die cavity 2, mould 3, discharging mode 4 four are coaxial, clout die cavity 2, mould
3rd, discharging mode 4 is integrally formed.
Step 2）, al-sr alloy bar is warming up to 480-550 DEG C, and passed through bar accommodating chamber 1 and be put into clout
In die cavity 2, offseted with the end of al-sr alloy bar with extrusion head, al-sr alloy bar is extruded with 600 tons of extruder,
Make aluminium strontium bar be squeezed into wire rod by mould 3, when the remaining height of bar is 15mm, is put into next bar and continues to squeeze
Pressure, by that analogy, realizes the continuously extruding and molding of al-sr alloy wire rod.
Observed by many experiments, when al-sr alloy wire rod is produced using the production technology in embodiment, strontium ingot will not
Scaling loss, and during extruding, discard waste material will not be produced, just discard waste material is carried out without the need for often having extruded a bar
Process.
Claims (7)
1. al-sr alloy production technology, including dispensing, melting, casting and extrusion molding, it is characterised in that extrusion molding is：
Step 1）, between straight-cylindrical mould and bar accommodating chamber arrange clout die cavity, clout die cavity be shaped as cone
Platform shape, the basal diameter of taper type is 30mm, and the taper of taper is 0.2-0.4, and clout die cavity is coaxial with mould, and clout
The bottom surface of die cavity is near mould；
Step 2）, by casting formed aluminium strontium bar be put into clout die cavity, aluminium strontium bar is extruded, make aluminium strontium bar
Wire rod is squeezed into by mould, when the remaining height of bar is 10-20mm, next bar is put into and is continued to extrude.
2. al-sr alloy production technology according to claim 1, it is characterised in that the step 1）In, the bottom of taper type
The a diameter of 30mm in face, the taper of taper type is 1/3, and the height of taper type is 30mm.
3. al-sr alloy production technology according to claim 1 and 2, it is characterised in that the step 2）In, treat more than bar
When lower height is 15mm, it is put into next bar and continues to extrude.
4. al-sr alloy production technology according to claim 3, it is characterised in that the melting is：
Step 1）, aluminium liquid is heated into 771-850 DEG C；
Step 2）, by specific purpose tool strontium ingot is pressed into aluminium liquid, until strontium ingot melts completely, specific purpose tool includes support bar,
Support bar lower end is provided with pressure cover, and multiple through holes are distributed with the wall for pressing cover.
5. al-sr alloy production technology according to claim 4, it is characterised in that：During the melting, to aluminium liquid
Inside it is passed through nitrogen to be refined.
6. al-sr alloy production technology according to claim 5, it is characterised in that：It is provided with the support bar and connects with pressure cover
Logical airway, nitrogen is passed through into aluminium liquid by the airway.
7. the al-sr alloy production technology according to claim 4 or 5 or 6, it is characterised in that：During the melting,
While strontium ingot is pressed into aluminium liquid, using specific purpose tool aluminium liquid is stirred.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611130928.7A CN106636697B (en) | 2016-12-09 | 2016-12-09 | Al-sr alloy production technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611130928.7A CN106636697B (en) | 2016-12-09 | 2016-12-09 | Al-sr alloy production technology |
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| Publication Number | Publication Date |
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| CN106636697A true CN106636697A (en) | 2017-05-10 |
| CN106636697B CN106636697B (en) | 2018-08-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611130928.7A Active CN106636697B (en) | 2016-12-09 | 2016-12-09 | Al-sr alloy production technology |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115141945A (en) * | 2022-08-01 | 2022-10-04 | 立中四通轻合金集团股份有限公司 | Preparation method of aluminum-strontium intermediate alloy coiled material with strontium content of more than 10wt% |
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| WO1991004809A1 (en) * | 1989-09-28 | 1991-04-18 | Institut Fiziki Vysokikh Davleny Imeni L.F.Veresc Hagina Akademii Nauk Sssr | Method for making elongate articles of small cross-sectional area by hot gas extrusion |
| GB2366226A (en) * | 2000-08-30 | 2002-03-06 | Luxfer Group Ltd | Die tooling |
| CN202490841U (en) * | 2012-03-16 | 2012-10-17 | 上海宇擎稀贵金属材料有限公司 | Magnesium-zinc-zirconium alloy formation device |
| CN203076354U (en) * | 2013-03-07 | 2013-07-24 | 云南新铜人实业有限公司 | Application structure for extruding large-section material |
| CN105728493A (en) * | 2016-03-11 | 2016-07-06 | 湖南大学 | Composite large plastic deformation device for combined type twisting and extruding pier and forming method |
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2016
- 2016-12-09 CN CN201611130928.7A patent/CN106636697B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1991004809A1 (en) * | 1989-09-28 | 1991-04-18 | Institut Fiziki Vysokikh Davleny Imeni L.F.Veresc Hagina Akademii Nauk Sssr | Method for making elongate articles of small cross-sectional area by hot gas extrusion |
| GB2366226A (en) * | 2000-08-30 | 2002-03-06 | Luxfer Group Ltd | Die tooling |
| CN202490841U (en) * | 2012-03-16 | 2012-10-17 | 上海宇擎稀贵金属材料有限公司 | Magnesium-zinc-zirconium alloy formation device |
| CN203076354U (en) * | 2013-03-07 | 2013-07-24 | 云南新铜人实业有限公司 | Application structure for extruding large-section material |
| CN105728493A (en) * | 2016-03-11 | 2016-07-06 | 湖南大学 | Composite large plastic deformation device for combined type twisting and extruding pier and forming method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115141945A (en) * | 2022-08-01 | 2022-10-04 | 立中四通轻合金集团股份有限公司 | Preparation method of aluminum-strontium intermediate alloy coiled material with strontium content of more than 10wt% |
| CN115141945B (en) * | 2022-08-01 | 2023-10-31 | 立中四通轻合金集团股份有限公司 | Preparation method of aluminum-strontium intermediate alloy coiled material with strontium content being more than 10wt% |
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| CN106636697B (en) | 2018-08-07 |
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Effective date of registration: 20190507 Address after: 402660 Block D27-1/02, North District of Tongnan Industrial Park, Chongqing Patentee after: Chongqing Qinglong new Mstar Technology Ltd Address before: 402367 Unity Road, Yongxi Town, Dazu County, Chongqing Patentee before: Chongqing Gu Ding alloy material Co., Ltd |
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