CN102367583A - Nickel plating process for molybdenum parts - Google Patents
Nickel plating process for molybdenum parts Download PDFInfo
- Publication number
- CN102367583A CN102367583A CN2011102182015A CN201110218201A CN102367583A CN 102367583 A CN102367583 A CN 102367583A CN 2011102182015 A CN2011102182015 A CN 2011102182015A CN 201110218201 A CN201110218201 A CN 201110218201A CN 102367583 A CN102367583 A CN 102367583A
- Authority
- CN
- China
- Prior art keywords
- molybdenum
- nickel plating
- nickel
- workpieces
- annealing
- 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
Landscapes
- Electroplating Methods And Accessories (AREA)
Abstract
The invention discloses a nickel plating process for molybdenum parts. In the technical flow process, the treatment is carried out according to the following steps: part annealing, chlorohydric acid pickling, pre-nickel-plating, nickel plating, flushing, dewatering, drying treatment, annealing sintering, detection and package. A nickel layer with the firm attaching effect can be plated onto the surface layer of the molybdenum parts, the occurrence of phenomena of infirm attaching, easy peeling and the like is avoided, and the brazing connection between the molybdenum parts and other parts is realized.
Description
Technical field:
The invention belongs to microwave electrovacuum technology field, specially refer to a kind of nickel plating technology of molybdenum workpieces.
Background technology:
Total type of electron tube is various, is made up of the parts of difference in functionality again in each type device, and the effect of these parts is different, and it is special to require, so the employed material of electron tube very extensively, almost comprised the known elements of occurring in nature more than 70%.Relate to metal and alloy, gas and geseous fuel, dielectric material and compound.Chemical material and specific function material etc.
Molybdenum is a kind of silvery white, have the refractory metal of metalluster.Pure molybdenum satisfactory mechanical property is easy to shape, and also can be rolled into very thin sheet material, band, pulls into very thin silk material.The molybdenum fusing point is high, steam forces down, degas in the surface and clean is easy, is widely used in cathode heater support tube, focusing electrode, anode, grid, heat shielding and spiral-line etc.
Molybdenum can be in spot welding such as iron, nickel, tantalums, but be difficult to realize soldering.For molybdenum can be realized and the soldering of other material, need carry out Nickel Plating Treatment to the surface of molybdenum.But the molybdenum nickel plating technology is difficult, adhere to not firm, easy peeling etc.
Summary of the invention:
The object of the invention is exactly in order to remedy the defective of prior art, a kind of nickel plating technology of molybdenum workpieces to be provided, and the present invention can plate out the nickel dam of adhere firmly on molybdenum workpieces top layer, can realize that molybdenum part is connected with the soldering of other part.
The present invention realizes through following technical scheme:
A kind of nickel plating technology of molybdenum workpieces is characterized in that: successively the molybdenum workpieces is carried out following processing:
1), annealing: carry out stress relief annealing, annealing temperature 800-1000 ℃, soaking time 50-70 minute;
2), chlorohydric acid pickling: with 1) handle the molybdenum workpieces that obtains and place hydrochloric acid pickling at least 30 seconds;
3), nickel preplating: with 2) handle the molybdenum workpieces that obtains and place nickel plating electrolytic solution submergence 0.5-1.0 minute;
4), nickel plating: with 3) handle the molybdenum workpieces obtain and immerse nickel plating in the nickel bath, the nickel plating time length is 0-15 minute for the first time; The nickel plating electrolyte temperature is (20 ± 5) ° С in the nickel bath, and current density is that the sedimentation speed of (0.5-1.0) А/dm2, nickel is the 8-11 micron;
5), flushing: with 4) handling the molybdenum workpieces that obtains washed 0.5 minute under cold water at least;
6), dehydration: with 5) handling the molybdenum workpieces that obtains dewatered 3 seconds in acetone at least;
7), drying treatment: with 6) handle the molybdenum workpieces obtain and use compressed air drying, until complete drying; Put into drying baker again, drying 10min at least under 80-100 ℃ of condition;
8), annealing sintering: with 7) handling the molybdenum workpieces that obtains carries out anneal, 950 ℃ of annealing temperatures, soaking time 90min;
9), detect the rejecting unacceptable product;
10), the molybdenum workpieces that is up to the standards is packed processing, get final product.
A kind of nickel plating technology of molybdenum workpieces is characterized in that: each proportioning raw materials of said nickel plating electrolytic solution is:
Nickelous chloride: 250 grams per liters;
Hydrochloric acid: 200 grams per liters.
A kind of nickel plating technology of molybdenum workpieces is characterized in that: in the anneal process, and 900 ℃ of annealing temperatures, soaking time 60 minutes.
Advantage of the present invention is:
The present invention can plate out the nickel dam of adhere firmly on molybdenum workpieces top layer, avoids occurring adhering to the generation of phenomenons such as not firm and easy peeling, realizes that molybdenum part is connected with the soldering of other part.
Embodiment:
A kind of nickel plating technology of molybdenum workpieces, concrete operations are following:
1, the preparation work before the nickel plating:
1.1 the molybdenum workpieces to needing nickel plating carries out stress relief annealing, 900 ℃ of annealing temperatures, soaking time 60 minutes.
1.2 operation began preceding 15-20 minute, opened vent fan.
1.3 need wear protective gears such as rubber gloves, apron, safety glasses during work.
1.4 with the immersion cotton equipment is cleaned before the work beginning.
1.5, and clean with the immersion cotton with coated abrasive working nickel anode rod.
1.6 putting on fingerstall or gloves will move back the molybdenum workpieces that overdoes and install on the metal wire hanger.
2, carried the metal wire pickling part at least 30 seconds in hydrochloric acid that overworks the molybdenum workpieces.
3, pickling is the good nickel plating electrolytic solution of part in the nickel preplating groove was pined for submergence 0.5-1.0 minute.
3.1 dispose nickel plating electrolytic solution by following composition: nickelous chloride: 250 grams per liters; Hydrochloric acid: 200 grams per liters;
3.2 the quantity by calculating weighs nickelous chloride;
3.3 hot tap water is injected nickel bath, cover the nickel bath height 1/4 place.
3.4 pour the nickelous chloride that weighs in the water into and stir and make its dissolving.
3.5 hydrochloric acid is injected nickel bath.
3.6 in nickel bath, inject tap water until the work liquid level, and carefully stir, obtain nickel plating electrolytic solution.
4, part is immersed in the common nickel bath.For the first time the nickel plating time length is part: (10-15) minute.
5, by following condition nickel plating:
5.1 nickel plating electrolyte temperature: 20 ± 5 ° of С
5.2 current density: 0.5-1.0 А/dm2.
5.3 the sedimentation speed 8-11 micron of nickel.。
5.4 allow in Ni-Speed, to move the contacting metal line of part.
6, washed part at least 0.5 minute with cold running water.
7, in acetone, part was dewatered 3 seconds at least.
8, use the compressed air drying part, until complete drying.
9, part is put into drying baker, drying 10min at least under 80-100 ℃ of condition.
10, wearing nylon gloves or fingerstall removes part from the metal wire hanger.
11, part is carried out sintering annealing, 950 ℃ of annealing temperatures, soaking time 90min.
12, the part after the annealing is detected, reject unacceptable product.
12.1 the coating outward appearance detects:
Do not allow: does not plate fully in the place in the drawing regulation; Spot; Expand, come off, peel off, spongy deposition; The coarse injustice of coating; Cleaning layer does not have vestige; Impression, indenture, cut, the coating globality is destroyed.
Allow: unconspicuous turboglyph; The vestige that the inoperative surface contacts with anchor clamps or lead; In groove, slit, and the coating color on the hole is dark; Flash of light trace, bar from material, instrument; Coating presents the texture of main raw.The unconspicuous faintly colored that main raw is arranged at the regional area of coating.
12.2 thickness of coating detects: under indivedual doubt situation, can the part after the plating and the part of not plating be put together, on the part after the plating, measure thickness of coating.
12.3 the detection of the clinging power behind the annealing sintering: do not allow phenomenons such as coating expands, peels off after the roasting on the part.
13, pack and transfer subsequent processing to detecting qualified part.
Claims (3)
1. the nickel plating technology of a molybdenum workpieces is characterized in that: successively the molybdenum workpieces is carried out following processing:
(1), annealing: carry out stress relief annealing, annealing temperature 800-1000 ℃, soaking time 50-70 minute;
(2), chlorohydric acid pickling: with 1) handle the molybdenum workpieces that obtains and place hydrochloric acid pickling at least 30 seconds;
(3), nickel preplating: with 2) handle the molybdenum workpieces that obtains and place nickel plating electrolytic solution submergence 0.5-1.0 minute;
(4), nickel plating: with 3) handle the molybdenum workpieces obtain and immerse nickel plating in the nickel bath, the nickel plating time length is 0-15 minute for the first time; The nickel plating electrolyte temperature is (20 ± 5) ° С in the nickel bath, and current density is that the sedimentation speed of (0.5-1.0) А/dm2, nickel is the 8-11 micron;
(5), flushing: with 4) handling the molybdenum workpieces that obtains washed 0.5 minute under cold water at least;
(6), dehydration: with 5) handling the molybdenum workpieces that obtains dewatered 3 seconds in acetone at least;
(7), drying treatment: with 6) handle the molybdenum workpieces obtain and use compressed air drying, until complete drying; Put into drying baker again, drying 10min at least under 80-100 ℃ of condition;
(8), annealing sintering: with 7) handling the molybdenum workpieces that obtains carries out anneal, 950 ℃ of annealing temperatures, soaking time 90min;
(9), detect the rejecting unacceptable product;
(10), the molybdenum workpieces that is up to the standards is packed processing, get final product.
2. the nickel plating technology of a kind of molybdenum workpieces according to claim 1 is characterized in that: each proportioning raw materials of said nickel plating electrolytic solution is:
Nickelous chloride: 250 grams per liters;
Hydrochloric acid: 200 grams per liters.
3. the nickel plating technology of a kind of molybdenum workpieces according to claim 1 is characterized in that: in the anneal process, and 900 ℃ of annealing temperatures, soaking time 60 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102182015A CN102367583A (en) | 2011-08-01 | 2011-08-01 | Nickel plating process for molybdenum parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102182015A CN102367583A (en) | 2011-08-01 | 2011-08-01 | Nickel plating process for molybdenum parts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102367583A true CN102367583A (en) | 2012-03-07 |
Family
ID=45760172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102182015A Pending CN102367583A (en) | 2011-08-01 | 2011-08-01 | Nickel plating process for molybdenum parts |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102367583A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103132112A (en) * | 2013-03-11 | 2013-06-05 | 浙江正邦电力电子有限公司 | Molybdenum plate nickel plating method for silicon power electronic device |
| CN106086968A (en) * | 2016-07-29 | 2016-11-09 | 成都立威讯科技有限公司 | A kind of electroplating technology of IGBT molybdenio plate surface-coated noble metal |
| CN113529146A (en) * | 2021-05-27 | 2021-10-22 | 中国航发南方工业有限公司 | Nickel plating process for diffuser brush of aircraft engine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52108338A (en) * | 1976-03-09 | 1977-09-10 | Sumitomo Electric Industries | Method of treating nickel plated surface of molybdenum |
| JPS63149392A (en) * | 1986-12-12 | 1988-06-22 | Toshiba Corp | Plating method for electrolytic ni |
| JPS6462495A (en) * | 1987-09-01 | 1989-03-08 | Nec Corp | Pretreatment for plating of molybdenum |
| CN1067457A (en) * | 1991-04-08 | 1992-12-30 | Skw金属(英国)有限公司 | Molybdenum parts and manufacture method thereof that plating is crossed |
-
2011
- 2011-08-01 CN CN2011102182015A patent/CN102367583A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52108338A (en) * | 1976-03-09 | 1977-09-10 | Sumitomo Electric Industries | Method of treating nickel plated surface of molybdenum |
| JPS63149392A (en) * | 1986-12-12 | 1988-06-22 | Toshiba Corp | Plating method for electrolytic ni |
| JPS6462495A (en) * | 1987-09-01 | 1989-03-08 | Nec Corp | Pretreatment for plating of molybdenum |
| CN1067457A (en) * | 1991-04-08 | 1992-12-30 | Skw金属(英国)有限公司 | Molybdenum parts and manufacture method thereof that plating is crossed |
Non-Patent Citations (8)
| Title |
|---|
| 《中国优秀硕士学位论文全文数据库-工程科技I辑》 20090825 谭智申 "电源产品钼箔镀银表面处理工艺研究" 摘要，正文第22、27-29以及34-37页 , * |
| 《新技术新工艺》 20020125 谭澄宇等 "钼片镀银新技术" 43-44 , 第1期 * |
| 《电子学通讯》 19811031 陆允信等 "钼的钎焊" 259-260 第3卷, 第4期 * |
| 《电镀与涂饰》 20110715 张一雯等 "预处理对钼基片镀钌层结合力的影响" 13-15 第30卷, 第7期 * |
| 张一雯等: ""预处理对钼基片镀钌层结合力的影响"", 《电镀与涂饰》, vol. 30, no. 7, 15 July 2011 (2011-07-15), pages 13 - 15 * |
| 谭智申: ""电源产品钼箔镀银表面处理工艺研究"", 《中国优秀硕士学位论文全文数据库-工程科技I辑》, 25 August 2009 (2009-08-25) * |
| 谭澄宇等: ""钼片镀银新技术"", 《新技术新工艺》, no. 1, 25 January 2002 (2002-01-25), pages 43 - 44 * |
| 陆允信等: ""钼的钎焊"", 《电子学通讯》, vol. 3, no. 4, 31 October 1981 (1981-10-31), pages 259 - 260 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103132112A (en) * | 2013-03-11 | 2013-06-05 | 浙江正邦电力电子有限公司 | Molybdenum plate nickel plating method for silicon power electronic device |
| CN103132112B (en) * | 2013-03-11 | 2015-10-07 | 浙江正邦电力电子有限公司 | A kind of silicon power electronic devices molybdenum sheet nickel plating process |
| CN106086968A (en) * | 2016-07-29 | 2016-11-09 | 成都立威讯科技有限公司 | A kind of electroplating technology of IGBT molybdenio plate surface-coated noble metal |
| CN113529146A (en) * | 2021-05-27 | 2021-10-22 | 中国航发南方工业有限公司 | Nickel plating process for diffuser brush of aircraft engine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102605400B (en) | Steel strip continuous copper plating process | |
| CN103484913A (en) | Aluminum alloy hard anodic oxidization treating process | |
| CN104962964B (en) | A kind of electro-plating method for improving basket cadmium plating thickness of coating uniformity | |
| CN106881432A (en) | The production method and its particular manufacturing craft of a kind of bright stainless steel pot | |
| CN109295445B (en) | Electroplating post-treatment process for silver-plated copper wire | |
| CN104778997A (en) | High-temperature and high-conductivity electrical wire and preparing method thereof | |
| CN115410925A (en) | Method for improving heat cycle reliability of aluminum nitride aluminum-coated packaging lining plate | |
| CN102367583A (en) | Nickel plating process for molybdenum parts | |
| CN101899693B (en) | Method for locally plating rhenium on oxygen-free copper matrix | |
| CN104900536B (en) | A kind of surface treatment method of semiconductor lead frame | |
| CN111058067A (en) | Zinc-nickel alloy electroplating process for metal surface | |
| CN105427957B (en) | A kind of production technology of screen pack copper covered steel wire | |
| CN112176371B (en) | Electroplating process for plating gold on beryllium copper surface | |
| CN106637313A (en) | Technological method for plating silver on aluminum alloy part | |
| CN105483787A (en) | Method for electroplating cellphone housing | |
| CN107231753A (en) | A kind of golden method of the heavy nickel for improving plating leakage | |
| CN104278305A (en) | Electroplated member coating layer treatment process | |
| CN102324270B (en) | Weldless lead-free ribbon/bus bar for photovoltaic modules and production method thereof | |
| CN104805479A (en) | Surface treatment method for power semiconductor device lead frame | |
| CN105386100A (en) | Method for electroplating copper and sliver on iron-nickel alloy frame | |
| CN104593842B (en) | Method for preparing metal coating on molybdenum substrate | |
| CN102306628B (en) | Method for manufacturing planar diode or die of thyristor by utilizing aluminium foil as solder | |
| KR20120097820A (en) | Ribbon wire for solar cell module and manufacturing method thereof | |
| CN107170527A (en) | A kind of compressor electric motor copper-clad aluminum conductor processing technology | |
| CN205934085U (en) | Novel nickel bath |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120307 |