CN105506255A - Breakage-preventing machining process for tungsten-base alloy wire rods - Google Patents
Breakage-preventing machining process for tungsten-base alloy wire rods Download PDFInfo
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- CN105506255A CN105506255A CN201510916997.XA CN201510916997A CN105506255A CN 105506255 A CN105506255 A CN 105506255A CN 201510916997 A CN201510916997 A CN 201510916997A CN 105506255 A CN105506255 A CN 105506255A
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- tungsten
- stretching
- alloy wire
- wire rod
- breakage
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- 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
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- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
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- Continuous Casting (AREA)
Abstract
The invention provides a breakage-preventing machining process for tungsten-base alloy wire rods. The breakage-preventing machining process comprises the steps of 1, stretching, wherein the unilateral stretching method is adopted for stretching the wire rods, the wire pouring-out operation is carried out before the next stretching process, and a wire end, pressed at the innermost part of a winding roll, of the last process is poured out and serves as a wire end of the next stretching process; 2, annealing, wherein the parabolic warming and cooling technology is adopted for annealing, the cooling curve is of a parabolic shape, and the temperature keeps constant for a period of time every one temperature gradient is lowered until annealing is finished. Experimental results show that the strength of tungsten-base alloy prepared through the breakage-preventing machining process for the tungsten-base alloy wire rods is greatly improved.
Description
Technical field
The present invention relates to electron emitting cathode field of material preparation, particularly relate to the anti-disconnected complete processing of a kind of tungsten-bast alloy wire rod.
Background technology
Because the selection of electron emitting cathode material all belongs to high temperature refractory, like this, there is following defect in alloy in stretching and annealing process:
1) when drawing, because tungsten-bast alloy wire rod needs to carry out multi-drawing operation, such tungsten-bast alloy wire rod end to end will by Repeated Compression, the later stage very easily produces Mierocrystalline cellulose disturbance state (as dovetail shaped) in alloy inside, shown in Figure 1, have a strong impact on the physicals of product.
2) during annealing, in order to shorten process period, the main rapid temperature rise and drop annealing adopting VTOL function at present, during short annealing, alloy interior tissue recrystal grain is grown up rapidly and is run through, and causes alloy material intensity low, there is product risk of breakage in moulding process.
Summary of the invention
For problems of the prior art, the invention provides the anti-disconnected complete processing of tungsten-bast alloy wire rod that a kind of yield rate is high, product strength is good.
For reaching above object, the present invention adopts following technical scheme.
The anti-disconnected complete processing of tungsten-bast alloy wire rod, is characterized in that, adopt unilateral stretching method to carry out wire stretching, that is, before carrying out lower one stretching process, first line falling operation is carried out, the end of a thread being pressed in the innermost upper procedure of winding roll is poured out, as the end of a thread of lower one stretching process.
Further illustrating as such scheme, adopts para-curve heating and cooling technique to carry out anneal; That is, temperature lowering curve parabolically shape, and often reduce a thermograde with regard to constant temperature 20-40 minute, until annealing terminates.
Further illustrating as such scheme, described thermograde is 50 DEG C, and constant temperature time is 30 minutes.
Compared with prior art, the anti-disconnected complete processing of tungsten-bast alloy wire rod provided by the invention has following beneficial effect:
One, adopt unilateral stretching method, from the beginning unidirectional drawing at every turn, the threadiness of alloy inside is formed smooth and easy; Along with the increase of processing passage, the proportional increase of quantity of single, the disorderly phenomenon of inorganization, the excellent physical properties of product.
Two, adopt para-curve heating and cooling technique, often reduce a thermograde with regard to constant temperature for some time, the alloy crystalline phase obtained so is evenly interlocked, without through check.
Accompanying drawing explanation
Figure 1 shows that the tungsten-bast alloy micro-structure diagram that existing complete processing is obtained;
Figure 2 shows that the tungsten-bast alloy micro-structure diagram that the embodiment of the present invention two is obtained.
Embodiment
Understand essence of the present invention better for convenience of those of ordinary skill in the art, below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.
Embodiment one
The anti-disconnected complete processing of tungsten-bast alloy wire rod, comprises the following steps:
1) stretch, adopt unilateral stretching method to carry out wire stretching, that is, before carrying out lower one stretching process, first carry out line falling operation, the end of a thread being pressed in the innermost upper procedure of winding roll is poured out, as the end of a thread of lower one stretching process.
2) annealing, in order to shorten process period, adopting the rapid temperature rise and drop anneal of VTOL function.
Contrast experiment
Experiment method, tungsten-bast alloy wire rod tungsten-bast alloy wire rod obtained for embodiment one and traditional technology obtained respectively bending goes out the bending point of 10 90 ° of angles, then stretching; Same bending point passes twice.
Experimental result: utilize the tungsten-bast alloy wire rod that the present embodiment is obtained, have three to rupture in ten bending points, and the tungsten-bast alloy wire rod utilizing traditional technology obtained, have six to rupture in ten bending points.
As can be seen here, the unilateral stretching technique adopting the present embodiment to provide effectively improves the intensity of tungsten-bast alloy wire rod.
Embodiment two
The anti-disconnected complete processing of tungsten-bast alloy wire rod, comprises the following steps:
1) stretch, adopt unilateral stretching method to carry out wire stretching, that is, before carrying out lower one stretching process, first carry out line falling operation, the end of a thread being pressed in the innermost upper procedure of winding roll is poured out, as the end of a thread of lower one stretching process.
2) anneal, adopts para-curve heating and cooling technique to carry out anneal; That is, temperature lowering curve parabolically shape, and often reduce a thermograde with regard to constant temperature 20-40 minute, until annealing terminates.In the present embodiment, preferred temperature gradient is 50 DEG C, and preferred constant temperature time is 30 minutes.
Figure 2 shows that the tungsten-bast alloy micro-structure diagram that the tungsten-bast alloy wire rod utilizing the present embodiment to provide resists disconnected complete processing obtained, as can be seen from the figure: alloy crystal phase structure all with interlock, without through shape crackle.
Contrast experiment
Experiment method, tungsten-bast alloy wire rod tungsten-bast alloy wire rod obtained for embodiment two and traditional technology obtained respectively bending goes out the bending point of 10 90 ° of angles, then stretching; Same bending point passes twice.
Experimental result: utilize the tungsten-bast alloy wire rod that the present embodiment two is obtained, only have one to rupture in ten bending points, and the tungsten-bast alloy wire rod utilizing traditional technology obtained, have six to rupture in ten bending points.
As can be seen here, in conjunction with unilateral stretching technique and para-curve heating and cooling technique, the intensity of tungsten-bast alloy wire rod can be made to improve further.
Above embodiment has been described in detail essence of the present invention, but can not limit protection scope of the present invention with this.Apparently, under the enlightenment of essence of the present invention, the art those of ordinary skill also can carry out many improvement and modification, it should be noted that these improve and modify and all drops within claims of the present invention.
Claims (3)
1. the anti-disconnected complete processing of tungsten-bast alloy wire rod, is characterized in that, adopt unilateral stretching method to carry out wire stretching, that is, before carrying out lower one stretching process, first line falling operation is carried out, the end of a thread being pressed in the innermost upper procedure of winding roll is poured out, as the end of a thread of lower one stretching process.
2. the anti-disconnected complete processing of tungsten-bast alloy wire rod according to claim 1, is characterized in that, adopt para-curve heating and cooling technique to carry out anneal; That is, temperature lowering curve parabolically shape, and often reduce a thermograde with regard to constant temperature 20-40 minute, until annealing terminates.
3. the anti-disconnected complete processing of tungsten-bast alloy wire rod according to claim 2, it is characterized in that, described thermograde is 50 DEG C, and constant temperature time is 30 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510916997.XA CN105506255B (en) | 2015-12-11 | 2015-12-11 | The anti-disconnected processing technology of tungsten-bast alloy wire rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510916997.XA CN105506255B (en) | 2015-12-11 | 2015-12-11 | The anti-disconnected processing technology of tungsten-bast alloy wire rod |
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| Publication Number | Publication Date |
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| CN105506255A true CN105506255A (en) | 2016-04-20 |
| CN105506255B CN105506255B (en) | 2017-11-17 |
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| CN201510916997.XA Active CN105506255B (en) | 2015-12-11 | 2015-12-11 | The anti-disconnected processing technology of tungsten-bast alloy wire rod |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107962084A (en) * | 2017-11-29 | 2018-04-27 | 铜陵市东方矿冶机械有限责任公司 | Zinc white wire rod resists disconnected processing technology |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3247902A1 (en) * | 1982-12-24 | 1984-07-05 | Georg 7310 Plochingen Barthelmä | Wire-drawing machine |
| CN101074460A (en) * | 2006-05-19 | 2007-11-21 | 天津市蓟县胜利钨钼制品加工厂 | Method for processing tungsten alloy filament |
| CN101271747A (en) * | 2008-05-07 | 2008-09-24 | 中国科学院电工研究所 | Iron based compounds superconducting wire, belt material and method for producing the same |
-
2015
- 2015-12-11 CN CN201510916997.XA patent/CN105506255B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3247902A1 (en) * | 1982-12-24 | 1984-07-05 | Georg 7310 Plochingen Barthelmä | Wire-drawing machine |
| CN101074460A (en) * | 2006-05-19 | 2007-11-21 | 天津市蓟县胜利钨钼制品加工厂 | Method for processing tungsten alloy filament |
| CN101271747A (en) * | 2008-05-07 | 2008-09-24 | 中国科学院电工研究所 | Iron based compounds superconducting wire, belt material and method for producing the same |
Non-Patent Citations (1)
| Title |
|---|
| A.HIDAI，赵兴乙: ""加工及工艺退火对掺杂钨丝塑-脆性能的影响"", 《稀有金属材料与工程》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107962084A (en) * | 2017-11-29 | 2018-04-27 | 铜陵市东方矿冶机械有限责任公司 | Zinc white wire rod resists disconnected processing technology |
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| CN105506255B (en) | 2017-11-17 |
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