CN103862047B - The molybdenum strut production technology of magnetron - Google Patents
The molybdenum strut production technology of magnetron Download PDFInfo
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- CN103862047B CN103862047B CN201410101211.4A CN201410101211A CN103862047B CN 103862047 B CN103862047 B CN 103862047B CN 201410101211 A CN201410101211 A CN 201410101211A CN 103862047 B CN103862047 B CN 103862047B
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- molybdenum
- molybdenum rod
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Abstract
The present invention relates to a kind of molybdenum strut production technology of magnetron, it comprises the following steps successively: selection, granulation, compacting, sintering, polishing, welding, inspection warehouse-in, selection needs to get out molybdenum powder, molybdenum rod, distilled water, binding agent and releasing agent, before welding, the end of molybdenum rod needs to carry out rounding process, the top end face being finished down the molybdenum rod after fillet be with molybdenum rod in the middle part of the disc of coaxial line, the diameter of this disc is 1/4 ~ 1/2 of molybdenum rod mid diameter.The present invention carries out rounding process to the end of molybdenum rod, and when decreasing welding, the contact area of molybdenum rod and shielding cap, makes the pressure on molybdenum rod end face then increase, can more effectively be pushed against on shielding cap by molybdenum rod; And because this end face and molybdenum rod sidewall are round-corner transition, be connected with shielding cap more tight after the hollows of molybdenum rod in the process advanced to shielding cap at molybdenum rod are melted, ensure that pulling capacity is up to standard; The molybdenum rod end face simultaneously retained can ensure the perpendicularity of molybdenum rod and shielding cap.
Description
Technical field
The present invention relates to a kind of molybdenum strut production technology of magnetron.
Background technology
Existing molybdenum strut production method has two kinds.One adopts injection moulding integrated molding, this kind of production method needs injection moulding machine, and equipment cost is high, though output is large, but molybdenum strut size is less, required precision is very high, its size is easy to affect by factors such as ambient pressure, temperature, humidity, cause molybdenum strut to produce and lack material, the problems such as bubble appear in inside, therefore when injection mo(u)lding, factor is high to external world, and production difficulty is large; One is also had also to be adopt first to produce shielding cap, again by shielding cap and molybdenum strut welding, this kind of method is applicable to medium-sized and small enterprises, equipment investment is few, and output can satisfy the demands, but due to molybdenum rod end and sidewalls orthogonal, during welding and shielding cap contact area larger, cylinder not easily by molybdenum strut top to shielding cap, therefore can shine into bonding strength inadequate, cause pulling capacity not up to standard.
Summary of the invention
The object of this invention is to provide that a kind of production cost is low, precision is high and the molybdenum strut production technology of the magnetron that pulling capacity is up to standard.
For solving the problems of the technologies described above, the present invention adopts following technical scheme: a kind of molybdenum strut production technology of magnetron, it comprises the following steps successively: selection, granulate, compacting, sintering, polishing, welding, inspection warehouse-in, described selection needs to get out molybdenum powder, molybdenum rod, distilled water, binding agent and releasing agent, the diameter of described molybdenum rod is 1.4 ~ 1.6mm, length is 5 ~ 6cm, nickel plating layer thick on molybdenum rod is 1.5 ~ 2um, before welding, the end of described molybdenum rod needs to carry out rounding process, the top end face being finished down the molybdenum rod after fillet be with molybdenum rod in the middle part of the disc of coaxial line, the diameter of this disc is 1/4 ~ 1/2 of molybdenum rod mid diameter,
Optimize, described granulation step comprises
A, by molybdenum powder, distilled water, binding agent, releasing agent by the mixing of following weight ratio:
The quality of molybdenum powder: the quality of distilled water: the quality of binding agent: the ratio of the quality of releasing agent is 1:3 ~ 6:1 ~ 4:0.05 ~ 0.5,
B, ball milling
The slurries mixed are imported ball mill, and ball milling filtered after 1 ~ 2 hour, filtrate was collected for subsequent use,
C, mist projection granulating
Utilize sponging granulator to be formed vaporific by filtrate ejection, heating carried out to vaporific filtrate simultaneously and make wherein moisture evaporation obtain molybdenum powder grain,
D, to sieve
The molybdenum powder grain obtained is divided into multiple grade through multiple sieves that sieve aperture is different, takes the molybdenum powder grain of different brackets on request, larger molybdenum powder grain recycles after reclaiming processing,
E, inspection molybdenum powder grain index
Check the density of molybdenum powder grain, flow velocity and granularity, its Midst density is 1.6 ~ 2g/cm
3, flow velocity is 50g/min, and granularity is 150 ~ 250 orders,
F, by qualified molybdenum powder grain warehouse-in for subsequent use;
Described sintering step is fitly placed in by the shielding cap blank suppressed on sintering molybdenum plate, stackedly from the bottom to top be placed in sintering furnace, heat up after the logical nitrogen 20min of sealing, porcelain ring interval is utilized between adjacent two-layer molybdenum plate, the upper surface of every layer of molybdenum plate is covered with alumina powder, described shielding cap blank is placed on powder, described intensification needs to heat up stage by stage, first in 5 ~ 6 hours, 600 ~ 800 DEG C are warming up to by normal temperature, 1800 DEG C are warming up to again through 7 ~ 8 hours, and keep 2 ~ 3 hours, eventually pass 7 ~ 8 hours and be down to normal temperature by 1800 DEG C.
Optimize, described pressing step adds in powder former by molybdenum powder grain, first manually debugs, after grain weight and size qualification, be converted to automatic compacting, in automatic pressing process, checks a grain weight and size, obtain shielding cap blank every 1 ~ 1.5 hour.
Optimize, described polishing step is the shielding cap sintered and polishing agent are put in the ratio of 1:2 ~ 3 polishing machine being marked with water carry out vibropolish, abundant drying after polishing completes, described polishing agent is needle-like and length is 0.8 ~ 1.2cm, and diameter is 0.5 ~ 1mm.
Optimize, first described welding step adjusts welding machine voltage, electric current and the pressure for molybdenum rod being pushed against the cylinder on shielding cap; Again shielding cap and molybdenum rod are put into the shielding cap feed tank of welding machine and the feed tank of molybdenum rod respectively, first manually debugging, after completing welding, the size of test samples and pulling capacity, automatic welding is converted to after meeting the requirements, check size and the pulling capacity of a molybdenum strut every 1 ~ 1.5h, pulling capacity need reach more than 20N.
Beneficial effect of the present invention is: the present invention is before welding molybdenum rod and shielding cap, rounding process is carried out to the end of molybdenum rod, the contact area of molybdenum rod and shielding cap when decreasing welding, when cylinder pressure is identical, pressure on molybdenum rod end face then increases, and can more effectively be pushed against on shielding cap by molybdenum rod; And because this end face and molybdenum rod sidewall are round-corner transition, be connected with shielding cap more tight after the hollows of molybdenum rod in the process advanced to shielding cap at molybdenum rod are melted, ensure that pulling capacity is up to standard; The molybdenum rod end face simultaneously retained can ensure the perpendicularity of molybdenum rod and shielding cap.
Accompanying drawing explanation
Accompanying drawing 1 is production procedure schematic diagram of the present invention;
Accompanying drawing 2 is the top view of molybdenum rod of the present invention;
Accompanying drawing 3 is the front view of molybdenum rod of the present invention;
In accompanying drawing: 1, molybdenum strut; 11, disc; 12, in the middle part of molybdenum rod.
Detailed description of the invention
Below in conjunction with embodiment shown in the drawings, the present invention is described in detail below.
As shown in Figure 1, the molybdenum strut production technology of magnetron, it comprises the following steps successively:
One, selection
Need to get out molybdenum powder, molybdenum rod, distilled water, binding agent and releasing agent, the diameter of molybdenum rod is 1.4 ~ 1.6mm, length is 5 ~ 6cm, nickel plating layer thick on molybdenum rod is 1.5 ~ 2um, as shown in Figure 2, the end of molybdenum rod 1 needs to carry out rounding process, the top end face being finished down the molybdenum rod after fillet be with molybdenum rod in the middle part of the disc 11 of 12 coaxial lines, the diameter of this disc 11 is 1/4 ~ 1/2 of 12 diameters in the middle part of molybdenum rod, in the present embodiment, molybdenum rod 1 diameter gets 1.5mm, and length is 5cm, and the diameter of its disc 11 is 0.5mm.
Two, granulate
A, by molybdenum powder, distilled water, binding agent, releasing agent by the mixing of following weight ratio:
The quality of molybdenum powder: the quality of distilled water: the quality of binding agent: the ratio of the quality of releasing agent is 1:3 ~ 6:1 ~ 4:0.05 ~ 0.5,
B, ball milling
The slurries mixed are imported ball mill, and ball milling filtered after 1 ~ 2 hour, filtrate was collected for subsequent use,
C, mist projection granulating
Utilize sponging granulator to be formed vaporific by filtrate ejection, heating carried out to vaporific filtrate simultaneously and make wherein moisture evaporation obtain molybdenum powder grain,
D, to sieve
The molybdenum powder grain obtained is divided into multiple grade through multiple sieves that sieve aperture is different, takes the molybdenum powder grain of different brackets on request, larger molybdenum powder grain recycles after reclaiming processing,
E, inspection molybdenum powder grain index
Check the density of molybdenum powder grain, flow velocity and granularity, its Midst density is 1.6 ~ 2g/cm
3, flow velocity is 50g/min, and granularity is 150 ~ 250 orders,
F, by qualified molybdenum powder grain warehouse-in for subsequent use.
Three, suppress
Molybdenum powder grain is added in powder former, first manually debugs, after grain weight and size qualification, be converted to automatic compacting, in automatic pressing process, checked a grain weight and size every 1 ~ 1.5 hour, obtain shielding cap blank.
Four, sinter
The shielding cap blank suppressed fitly is placed on sintering molybdenum plate, stackedly from the bottom to top be placed in sintering furnace, heat up after the logical nitrogen 20min of sealing, porcelain ring interval is utilized between adjacent two-layer molybdenum plate, the upper surface of every layer of molybdenum plate is covered with alumina powder, and shielding cap blank is placed on powder.Intensification needs to heat up stage by stage, first in 5 ~ 6 hours, is warming up to 600 ~ 800 DEG C by normal temperature, then is warming up to 1800 DEG C through 7 ~ 8 hours, and keeps 2 ~ 3 hours, eventually passes 7 ~ 8 hours and is down to normal temperature by 1800 DEG C.
Five, polishing
The shielding cap sintered and polishing agent are put in the ratio of 1:2 ~ 3 polishing machine being marked with water and carries out vibropolish, abundant drying after polishing completes, polishing agent is needle-like and length is 0.8 ~ 1.2cm, and diameter is 0.5 ~ 1mm.
Six, weld
First adjust welding machine voltage, electric current and the pressure for molybdenum rod being pushed against the cylinder on shielding cap, cylinder pressure is 40N; Again shielding cap and molybdenum rod are put into the shielding cap feed tank of welding machine and the feed tank of molybdenum rod respectively, first manually debugging, after completing welding, the size of test samples and pulling capacity, automatic welding is converted to after meeting the requirements, check size and the pulling capacity of a molybdenum strut every 1 ~ 1.5h, pulling capacity need reach more than 20N.
Seven, inspection warehouse-in
Above-mentioned technique is the method for the molybdenum strut making top hat formula, makes the molybdenum strut of center cap form, by molybdenum rod bending after welding completes as needed.
Not only production efficiency is high to utilize above-mentioned explained hereafter molybdenum strut, and perpendicularity is good, and pulling capacity is up to standard, and not by such environmental effects, production difficulty is lower.
Above-described embodiment, only for technical conceive of the present invention and feature are described, its object is to person skilled in the art can be understood content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalences done according to the present invention's spirit change or modify, and all should be encompassed within protection scope of the present invention.
Claims (4)
1. the molybdenum strut production technology of a magnetron, it comprises the following steps successively: selection, granulation, compacting, sintering, polishing, welding, inspection warehouse-in, described selection comprises and gets out molybdenum powder, molybdenum rod, distilled water, binding agent and releasing agent, the diameter of described molybdenum rod is 1.4 ~ 1.6mm, length is 5 ~ 6cm, nickel plating layer thick on described molybdenum rod is 1.5 ~ 2um, it is characterized in that:
Before welding, rounding process is carried out in the end of described molybdenum rod, the top end face being finished down the molybdenum rod after fillet be with molybdenum rod in the middle part of the disc of coaxial line, the diameter of this disc is 1/4 ~ 1/2 of molybdenum rod mid diameter;
Described granulation step comprises:
A, by molybdenum powder, distilled water, binding agent, releasing agent by the mixing of following weight ratio:
The quality of molybdenum powder: the quality of distilled water: the quality of binding agent: the ratio of the quality of releasing agent is 1:3 ~ 6:1 ~ 4:0.05 ~ 0.5,
B, ball milling
The slurries mixed are imported ball mill, and ball milling filtered after 1 ~ 2 hour, filtrate was collected for subsequent use,
C, mist projection granulating
Utilize sponging granulator to be formed vaporific by filtrate ejection, heating carried out to vaporific filtrate simultaneously and make wherein moisture evaporation obtain molybdenum powder grain,
D, to sieve
The molybdenum powder grain obtained is divided into multiple grade through multiple sieves that sieve aperture is different, takes the molybdenum powder grain of different brackets on request, larger molybdenum powder grain recycles after reclaiming processing,
E, inspection molybdenum powder grain index
Check the density of molybdenum powder grain, flow velocity and granularity, its Midst density is 1.6 ~ 2g/cm
3, flow velocity is 50g/min, and granularity is 150 ~ 250 orders,
F, by qualified molybdenum powder grain warehouse-in for subsequent use;
Described sintering step is fitly placed in by the shielding cap blank suppressed on sintering molybdenum plate, stackedly from the bottom to top be placed in sintering furnace, heat up after the logical nitrogen 20min of sealing, porcelain ring interval is utilized between adjacent two-layer molybdenum plate, the upper surface of every layer of molybdenum plate is covered with alumina powder, described shielding cap blank is placed on powder, described intensification needs to heat up stage by stage, first in 5 ~ 6 hours, 600 ~ 800 DEG C are warming up to by normal temperature, 1800 DEG C are warming up to again through 7 ~ 8 hours, and keep 2 ~ 3 hours, eventually pass 7 ~ 8 hours and be down to normal temperature by 1800 DEG C.
2. the molybdenum strut production technology of magnetron according to claim 1, it is characterized in that: described pressing step adds in powder former by molybdenum powder grain, first manually debugging, automatic compacting is converted to after grain weight and size qualification, in automatic pressing process, check a grain weight and size every 1 ~ 1.5 hour, obtain shielding cap blank.
3. the molybdenum strut production technology of magnetron according to claim 1, it is characterized in that: described polishing step is the shielding cap sintered and polishing agent are put in the ratio of 1:2 ~ 3 polishing machine being marked with water carry out vibropolish, abundant drying after polishing completes, described polishing agent is needle-like and length is 0.8 ~ 1.2cm, and diameter is 0.5 ~ 1mm.
4. the molybdenum strut production technology of magnetron according to claim 1, is characterized in that: first described welding step adjusts welding machine voltage, electric current and the pressure for molybdenum rod being pushed against the cylinder on shielding cap; Again shielding cap and molybdenum rod are put into the shielding cap feed tank of welding machine and the feed tank of molybdenum rod respectively, first manually debugging, after completing welding, the size of test samples and pulling capacity, automatic welding is converted to after meeting the requirements, check size and the pulling capacity of a molybdenum strut every 1 ~ 1.5h, pulling capacity need reach more than 20N.
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| CN201410101211.4A CN103862047B (en) | 2014-03-19 | 2014-03-19 | The molybdenum strut production technology of magnetron |
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| CN103862047B true CN103862047B (en) | 2016-02-17 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101097825A (en) * | 2006-06-30 | 2008-01-02 | 顾进跃 | Method for producing molybdenum component for magnetron cathode |
| CN101315858A (en) * | 2007-05-28 | 2008-12-03 | 上海富驰高科技有限公司 | Molybdenum strut of permatron and its production method |
| CN201478250U (en) * | 2009-08-25 | 2010-05-19 | 美的集团有限公司 | Magnetron |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6091531A (en) * | 1983-10-25 | 1985-05-22 | Matsushita Electronics Corp | Manufacture of cathode supporting structure for magnetron |
| JPH03233827A (en) * | 1990-02-09 | 1991-10-17 | Toshiba Corp | Manufacture of cathode structure of magnetron |
| JPH05159708A (en) * | 1991-12-03 | 1993-06-25 | Hitachi Ltd | Magnetron |
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2014
- 2014-03-19 CN CN201410101211.4A patent/CN103862047B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101097825A (en) * | 2006-06-30 | 2008-01-02 | 顾进跃 | Method for producing molybdenum component for magnetron cathode |
| CN101315858A (en) * | 2007-05-28 | 2008-12-03 | 上海富驰高科技有限公司 | Molybdenum strut of permatron and its production method |
| CN201478250U (en) * | 2009-08-25 | 2010-05-19 | 美的集团有限公司 | Magnetron |
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Inventor after: Wang Linfu Inventor before: Li Donghai Inventor before: Xu Jianchun |
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Effective date of registration: 20160114 Address after: 215134, No. 355, Weibei South Road, Weitang Town, Suzhou, Jiangsu, Xiangcheng District Applicant after: SUZHOU HUADONG RUBBER CO., LTD. Address before: Double Bang village in Changshou City Xinzhuang Town Suzhou city Jiangsu province 215562 Applicant before: SUZHOU LIYA METAL PRODUCTS CO., LTD. |
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