CN107841648A - A kind of method for improving platinum-tungsten alloys hot-working character - Google Patents
A kind of method for improving platinum-tungsten alloys hot-working character Download PDFInfo
- Publication number
- CN107841648A CN107841648A CN201711173354.6A CN201711173354A CN107841648A CN 107841648 A CN107841648 A CN 107841648A CN 201711173354 A CN201711173354 A CN 201711173354A CN 107841648 A CN107841648 A CN 107841648A
- Authority
- CN
- China
- Prior art keywords
- cast
- alloy
- spray
- working
- hot
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C5/00—Alloys based on noble metals
- C22C5/04—Alloys based on a platinum group metal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D18/00—Pressure casting; Vacuum casting
-
- 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
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/06—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/14—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of noble metals or alloys based thereon
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Continuous Casting (AREA)
Abstract
The invention discloses a kind of method for improving platinum-tungsten alloys hot-working character, following steps are specifically included：(1) melting of alloy, working chamber is vacuumized, and alloy should carry out refining degasification to improve the consistency of ingot casting in molten condition；(2) preparation of alloy cast ingot, is molded using spray to cast；(3) it is heat-treated, wire drawing.By using spray to cast moulding process, the formation of thick column crystal is effectively prevent, ingot structure is essentially tiny equiax crystal and composition is uniform, and follow-up thermal deformation processing is provided the foundation.Hot-working eliminate alloy structure segregation and it is loose; hot-rolled temperature is 1500~2000 DEG C; drawing process carries out 700~950 DEG C when working modulus reaches 30%~50%; 30~60min is heat-treated; the logical protective gas of heat treatment process is protected to silk material, and the method thoroughly solves the technical barrier of platinum-tungsten alloys processing difficulties.It can stablize, mass-produce string diameter and be more than 0.01mm ultra-fine wires.
Description
Technical field
The invention belongs to technical field of metal material, and in particular to a kind of method for improving platinum-tungsten alloys hot-working character,
Refer in particular to the special smelting process of platinum-tungsten alloys.
Background technology
With the development of national defense industry, electronics industry and instrument and meter industry, the performance requirement of resistance-strain material is got over
Come higher.As resistance-strain material, it is necessary to possess high resistance, and have high structural stability, inoxidizability, corrosion resistance
And intensity.The strain gauge material used earliest is nickel chromium triangle and corronil, but temperature in use is relatively low, and generally below 400 DEG C, Beijing has
The total institute of non-ferrous metal research develops 6JG precision high-resistance alloys, can reach 500 DEG C or so.In order to obtain with high-temperature stability
Resistance-strain material, people start to notice precious metal alloys material, such as Au-Pd-Fe and Au-Pd-Mo, these alloys tool
There is high resistivity, but tensile strength is not high, it is difficult to be processed into ultrafine wire.The beginning of the sixties, people began one's study platinum-tungsten alloys, high
Resistance superfine alloy silk material is used for military project product, and conventional material mainly has NiCr alloys, Cu alloys, PtW alloys etc., due to PtW
B alloy wire has the characteristics that low energy is under fire, corrosion-resistant, compatibility is good, solderability is good compared with other materials, can be well
Meet military project product to high safety, highly reliable, miniaturization and can the requirement that develops of the direction such as anti-adverse environment ability.Current technique
Method, because platinum-tungsten alloys easy processing is hardened in cold working or hot procedure, ingot casting is easy to crack, and is carrying out smaller silk
During the processing in footpath, it can not continue.
The content of the invention
It is an object of the present invention to provide a kind of method for improving platinum-tungsten alloys hot-working character, pass through special ingot casting smelter
Skill, making ingot structure, composition is uniform, is tiny equiaxed grain structure, and ingot formation success rate reaches without obvious thick column crystal
100%, processing characteristics stablize it is excellent, can be mass out string diameter be more than 0.01mm platinum-tungsten alloys silk.
Technical scheme：A kind of method for improving platinum-tungsten alloys hot-working character：It is it is characterised in that it includes following
Step：
(1) melting of alloy, working chamber is vacuumized, and alloy should carry out refining degasification to improve ingot casting in molten condition
Consistency；
(2) preparation of alloy cast ingot, is molded using spray to cast；
(3) it is heat-treated, wire drawing.
Further, alloy contains platinum 80-90wt%, tungsten 10-20wt% described in step (1).
Further, melting described in step (1) is to use high-purity zirconia pipe crucible, and intermediate frequency furnace carries out melting.
Further, the vacuum described in step (1), vacuum to 10-1Pa~10-2Pa。
Further, the refining described in step (1), time are 3~10min, fully exclude the gas in melt.
Further, the spray to cast described in step (2), it is to carry out spray to cast when melt temperature reaches 1800 DEG C~2200 DEG C.
Further, the spray to cast described in step (2), be with sub- quick spray to cast in water cooled copper mould.
Further, the heat treatment described in step (3), logical argon gas are protected.
Further, the wire drawing described in step (3), is made annealing treatment when working modulus reaches 30-50%, temperature 900-
1200 DEG C, time 30-90min.
Beneficial effects of the present invention：
(1) by using spray to cast system, thick columanar structure's generation in tissue is effectively prevent, improves ingot casting matter
Amount, is easy to follow-up hot-working.
(2) by when working modulus reaches 30%~50%, being made annealing treatment to platinum-tungsten alloys, and by annealing time control
System is controlled at 900~1200 DEG C in 30~90min, annealing temperature, reduces the harmful effect of platinum-tungsten alloys processing hardenability band.
Embodiment
With reference to embodiment, the present invention is further described.
Prepared by a kind of method for improving platinum-tungsten alloys hot-working character, the wherein ingot casting of alloy is molded using spray to cast, melting
Aluminium alloy spray to cast is in water cooled copper mould is thickeied.Alloy wire proposed by the present invention can be prepared with the following method, each constituent element of alloy
By nominal content dispensing, material purity is more than 99.99%, it is contemplated that the volatilization of tungsten, can suitably excessive 1% or so, using spray to cast
Moulding process, working chamber are evacuated to 10-1Pa~10-2Be powered heating during Pa, and then melt refines 3~10min, melt temperature
Reach 1800 DEG C~2200 DEG C spray to casts in water cooled copper mould, obtained ingot casting is advantageous to carry out hot-working without thick column crystal.Heat
Temperature is rolled for 1500~2000 DEG C, and drawing process carries out 700~950 DEG C when working modulus reaches 30%~50%, 30~60min
Heat treatment, the logical protective gas of heat treatment process are protected to silk material, can be stablized, be mass-produced string diameter surpassing more than 0.01mm
Filament material.
Embodiment 1
Each constituent element of alloy presses Pt90%, W10% dispensing, and material purity is more than 99.99%, it is contemplated that the volatilization of tungsten, can fit
When excessive 1% or so.Using high-purity zirconia pipe crucible, intermediate frequency furnace melting, working chamber is evacuated to 10 in melting- 1Pa, alloy fully refines 3min degasification to improve the consistency of ingot casting in the molten state, when melt temperature reaches 1800 DEG C
Spray to cast is in water cooled copper mould is thickeied.Ingot casting passes through 1600 DEG C of hot forgings, to φ 6mm and then cold rolling is carried out from the hot forgings of φ 10, from φ 6
φ 4mm are rolled to, 900 DEG C, 60min heat treatments are carried out when being rolled to φ 4.6mm, the logical argon gas of heat treatment process is protected, finally
Wire drawing, reach 900 DEG C of 50% carry out in working modulus, 30min annealing, be prepared into the silk material that string diameter is 0.05mm.
Embodiment 2
Each constituent element of alloy presses Pt85%, W15% dispensing, and material purity is more than 99.99%, it is contemplated that the volatilization of tungsten, can fit
When excessive 1% or so.Using high-purity zirconia pipe crucible, intermediate frequency furnace melting, working chamber is evacuated to 10 in melting- 1Pa, alloy should fully refine 6min degasification to improve the consistency of ingot casting, reach 2100 DEG C in melt temperature in the molten state
When spray to cast in water cooled copper mould is thickeied.Ingot casting passes through 1900 DEG C of hot forgings, to φ 6mm and then cold rolling is carried out from the hot forgings of φ 10, from φ
6 are rolled to φ 4mm, and 1000 DEG C, 50min heat treatments are carried out when being rolled to φ 4.5mm, and the logical argon gas of heat treatment process is protected, most
Wire drawing afterwards, reach 900 DEG C of 50% carry out in working modulus, 35min annealing, be prepared into the silk material that string diameter is 0.1mm.
Technical scheme is described in detail above-described embodiment.It is apparent that the present invention is not limited retouched
The embodiment stated.Based on the embodiment in the present invention, those skilled in the art can also make a variety of changes accordingly, but appoint
What is equal with the present invention or similar change belongs to the scope of protection of the invention.
Claims (9)
- A kind of 1. method for improving platinum-tungsten alloys hot-working character：It is characterised in that it includes following steps：(1) melting of alloy, working chamber is vacuumized, and alloy should carry out refining degasification to improve the densification of ingot casting in molten condition Degree；(2) preparation of alloy cast ingot, is molded using spray to cast；(3) it is heat-treated, wire drawing.
- 2. the method as described in claim 1：Characterized in that, alloy contains platinum 80-90wt%, tungsten 10- described in step (1) 20wt%.
- 3. the method as described in claim 1：Characterized in that, melting described in step (1) is to use high-purity zirconia pipe earthenware Crucible, intermediate frequency furnace carry out melting.
- 4. the method as described in claim 1：Characterized in that, the vacuum described in step (1), vacuum to 10-1Pa~10- 2Pa。
- 5. the method as described in claim 1：Characterized in that, the refining described in step (1), the time is 3~10min, is filled Divide the gas excluded in melt.
- 6. the method as described in claim 1：Characterized in that, the spray to cast described in step (2), is reached in melt temperature Spray to cast is carried out at 1800 DEG C~2200 DEG C.
- 7. the method as described in claim 1：Characterized in that, the spray to cast described in step (2), is in water with sub- quick spray to cast In cold copper mold.
- 8. the method as described in claim 1：Characterized in that, the heat treatment described in step (3), logical argon gas are protected.
- 9. the method as described in claim 1：Characterized in that, the wire drawing described in step (3), reaches 30- in working modulus Made annealing treatment when 50%, 900-1200 DEG C of temperature, time 30-90min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711173354.6A CN107841648A (en) | 2017-11-22 | 2017-11-22 | A kind of method for improving platinum-tungsten alloys hot-working character |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711173354.6A CN107841648A (en) | 2017-11-22 | 2017-11-22 | A kind of method for improving platinum-tungsten alloys hot-working character |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107841648A true CN107841648A (en) | 2018-03-27 |
Family
ID=61679992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711173354.6A Pending CN107841648A (en) | 2017-11-22 | 2017-11-22 | A kind of method for improving platinum-tungsten alloys hot-working character |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107841648A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109182825A (en) * | 2018-08-29 | 2019-01-11 | 有研亿金新材料有限公司 | A method of improving platinum-tungsten alloys cold-forming property |
| CN109385591A (en) * | 2018-08-29 | 2019-02-26 | 有研亿金新材料有限公司 | A kind of preparation method of medical platinum-tungsten alloys ultra-fine wire |
| CN110218895A (en) * | 2019-06-26 | 2019-09-10 | 泰安恒成复合材料工程技术有限公司 | A kind of preparation process of dispersion-strengtherning platinum-rhodium alloy plate |
| CN114457222A (en) * | 2021-09-30 | 2022-05-10 | 中国船舶重工集团公司第七一八研究所 | Method for improving processing performance of high-purity tungsten |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104164585A (en) * | 2014-08-06 | 2014-11-26 | 贵研铂业股份有限公司 | Platinum-based high-elasticity alloy and preparation method thereof |
| CN106244842A (en) * | 2016-09-08 | 2016-12-21 | 深圳市金铸坊珠宝有限公司 | A kind of hard platinum alloy and preparation method |
-
2017
- 2017-11-22 CN CN201711173354.6A patent/CN107841648A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104164585A (en) * | 2014-08-06 | 2014-11-26 | 贵研铂业股份有限公司 | Platinum-based high-elasticity alloy and preparation method thereof |
| CN106244842A (en) * | 2016-09-08 | 2016-12-21 | 深圳市金铸坊珠宝有限公司 | A kind of hard platinum alloy and preparation method |
Non-Patent Citations (2)
| Title |
|---|
| 庞启航等: "旋锻工艺对Pt-10Pd-20Ag合金组织性能的影响", 《辽宁科技大学学报》 * |
| 闫琳等: "PtW超细丝的制备工艺及显微结构研究", 《稀有金属》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109182825A (en) * | 2018-08-29 | 2019-01-11 | 有研亿金新材料有限公司 | A method of improving platinum-tungsten alloys cold-forming property |
| CN109385591A (en) * | 2018-08-29 | 2019-02-26 | 有研亿金新材料有限公司 | A kind of preparation method of medical platinum-tungsten alloys ultra-fine wire |
| CN110218895A (en) * | 2019-06-26 | 2019-09-10 | 泰安恒成复合材料工程技术有限公司 | A kind of preparation process of dispersion-strengtherning platinum-rhodium alloy plate |
| CN114457222A (en) * | 2021-09-30 | 2022-05-10 | 中国船舶重工集团公司第七一八研究所 | Method for improving processing performance of high-purity tungsten |
| CN114457222B (en) * | 2021-09-30 | 2023-07-14 | 中国船舶重工集团公司第七一八研究所 | Method for improving processability of high-purity tungsten |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107841648A (en) | A kind of method for improving platinum-tungsten alloys hot-working character | |
| CN105543540A (en) | Copper chromium zirconium alloy and preparing method thereof | |
| CN108456799A (en) | A kind of high-performance copper ferroalloy materials and its electroslag remelting preparation method | |
| CN107586977B (en) | A kind of preparation method of copper alloy with high strength and high conductivity bar | |
| CN106282651A (en) | A kind of copper silver rare-earth alloy superfine wire and production method thereof | |
| CN109338147A (en) | A kind of preparation method of platinum-silver alloys ultra-fine wire | |
| CN103352137B (en) | For the copper alloy with high strength and high conductivity and preparation method thereof of power switch spring contact | |
| CN104073684A (en) | Titanium alloy containing Cr and Mn elements and preparation method thereof | |
| CN102021447A (en) | Manufacture method of extra super duralumin alloy cast ingots | |
| CN106834730A (en) | A kind of method that electroslag remelting technique that pressurizes smelts high-quality high-speed steel | |
| CN103526038B (en) | A kind of high-strength high-plasticity TWIP steel esr production method | |
| CN101486135A (en) | GH4169 high-temperature alloy welding wire | |
| CN108179304A (en) | Silver alloy and its manufacturing process and application | |
| CN102354541B (en) | High-strength oxidation-resistant aluminium alloy conductive core and production method thereof | |
| CN104404356B (en) | A kind of return material method of smelting of impeller martensitic stain less steel | |
| CN106271232A (en) | The preparation technology of gold nickel wire solder | |
| CN108714749A (en) | A kind of preparation method of high brittle alloy weld tabs | |
| CN105861935A (en) | Fe-36Ni Invar alloy material good in thermoplasticity and preparation method thereof | |
| CN104264082A (en) | Nitrogen-doped toughened metallic glass composite material and preparation method thereof | |
| CN102191405B (en) | Copper alloy applied to clamping and loading tools of strip steel welding equipment and its production method | |
| CN103540789A (en) | Cu-Mg-Te-P alloy bar specially used for crystallizer and thermal treatment process of Cu-Mg-Te-P alloy bar | |
| CN105256203A (en) | Preparation method of aluminum alloy conductors | |
| CN109468548A (en) | A kind of width supercooling liquid phase region zirconium-base amorphous alloy | |
| CN105803322B (en) | A kind of potassium steel and preparation method thereof | |
| CN104294118A (en) | Preparation method for aluminium alloy wire |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180327 |