MD164Y - Process for brazing sintered hard alloys and carbon steels - Google Patents
Process for brazing sintered hard alloys and carbon steels Download PDFInfo
- Publication number
- MD164Y MD164Y MDS20090055A MDS20090055A MD164Y MD 164 Y MD164 Y MD 164Y MD S20090055 A MDS20090055 A MD S20090055A MD S20090055 A MDS20090055 A MD S20090055A MD 164 Y MD164 Y MD 164Y
- Authority
- MD
- Moldova
- Prior art keywords
- bonding
- alloys
- soldering
- carbon steels
- hard alloys
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 25
- 230000008569 process Effects 0.000 title claims abstract description 21
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 16
- 239000000956 alloy Substances 0.000 title claims abstract description 16
- 229910000975 Carbon steel Inorganic materials 0.000 title claims abstract description 5
- 238000005219 brazing Methods 0.000 title claims 2
- 239000011247 coating layer Substances 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 9
- 238000005275 alloying Methods 0.000 claims abstract description 7
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 claims abstract description 4
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 claims abstract description 4
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 claims abstract description 4
- 238000000151 deposition Methods 0.000 claims abstract description 3
- 229910000743 fusible alloy Inorganic materials 0.000 claims abstract description 3
- 230000004907 flux Effects 0.000 claims description 5
- 238000005476 soldering Methods 0.000 abstract description 22
- 239000010410 layer Substances 0.000 abstract description 5
- 238000005507 spraying Methods 0.000 abstract 1
- 238000000576 coating method Methods 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 229910052709 silver Inorganic materials 0.000 description 4
- 239000004332 silver Substances 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000004913 activation Effects 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 235000019270 ammonium chloride Nutrition 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000012768 molten material Substances 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 description 2
- -1 soldering lamps Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 description 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- NPXOKRUENSOPAO-UHFFFAOYSA-N Raney nickel Chemical compound [Al].[Ni] NPXOKRUENSOPAO-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000000908 ammonium hydroxide Substances 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000005262 decarbonization Methods 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical class [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 description 1
- 229910000753 refractory alloy Inorganic materials 0.000 description 1
- 238000005488 sandblasting Methods 0.000 description 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 1
- 239000004317 sodium nitrate Substances 0.000 description 1
- 235000010344 sodium nitrate Nutrition 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000011135 tin Substances 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Carbon And Carbon Compounds (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
Inventia se refera la procedeele de lipire a aliajelor, in particular la un procedeu de lipire prin aliere cu scantei a aliajelor dure sinterizate si a otelurilor carbon. Procedeul, conform inventiei, include depunerea pe suprafata de lipit, prin aliere cu scantei, la o frecventa a impulsurilor de 200…500 Hz si durata de 200…400 µs, a unui strat de acoperire intermediar, care nu este un material de lipit, spoirea si lipirea ulterioara a stratului obtinut cu aliaje usor fuzibile, cu utilizarea unui flux de colofoniu.The invention relates to the processes of bonding alloys, in particular to a process of bonding by sparks alloying of hard sintered alloys and carbon steels. The process, according to the invention, includes depositing on the soldering surface, by sparks alloying, at a pulse frequency of 200 ... 500 Hz and the duration of 200 ... 400 µs, of an intermediate coating layer, which is not a soldering material, subsequent spraying and bonding of the layer obtained with easily fusible alloys, using a rosin flow.
Description
Invenţia se referă la procedeele de lipire a aliajelor, în particular la un procedeu de lipire prin aliere cu scântei a aliajelor dure sinterizate şi a oţelurilor carbon. The invention relates to processes for bonding alloys, in particular to a process for bonding sintered hard alloys and carbon steels by spark welding.
Este cunoscut faptul că pe suprafaţa oţelurilor inox şi a aliajelor refractare se formează nişte pelicule de oxizi cu o compoziţie complicată, formate din oxizi de crom, de aluminiu şi de titan. Dificultatea principală la lipirea pieselor confecţionate din materialele menţionate constă în imposibilitatea asigurării unei adeziuni rezistente a suprafeţei lor cu aliajele de lipire. It is known that oxide films with a complicated composition, consisting of chromium, aluminum and titanium oxides, form on the surface of stainless steels and refractory alloys. The main difficulty in bonding parts made of the aforementioned materials lies in the impossibility of ensuring a strong adhesion of their surface with the bonding alloys.
Este cunoscut un procedeu de lipire a aliajelor dure, care include înlăturarea peliculei de oxizi înainte de lipire, prin sablarea suprafeţei cu nisip, urmată de şlefuire şi lipirea propriu-zisă. Procedeul menţionat prevede utilizarea unor fluxuri şi aliaje de lipit ce conţin argint. Pentru mărirea rezistenţei, aceste materiale se aliază la temperaturi de 500…1100°C, ceea ce asigură o adeziune rezistentă, folosindu-se adaosuri de nichel, de mangan sau de aluminiu, ceea ce oferă o durabilitate mai mare pieselor. Încălzirea piesei se efectuează în vid, într-un flux gazos ce conţine argon. În afară de materialele topite se mai folosesc aliaje pulverulente. Coeficientul de dilatare liniară a oţelurilor la încălzire este de 2…3 ori mai mare decât cel al aliajelor dure, de aceea pentru obţinerea unei îmbinări calitative în timpul lipirii este necesară o încălzire uniformă a obiectului de lipit, în special al locului de lipit. Pentru a evita deformarea piesei cu stratul intermediar depus prin lipire, ambele se răcesc într-un cuptor, treptat, până la temperatura de 200…250°C timp de 6 ore. Dacă e necesar, obiectul se căleşte imediat după lipire [1]. A process for soldering hard alloys is known, which includes removing the oxide film before soldering, by sandblasting the surface, followed by grinding and the actual soldering. The mentioned process involves the use of fluxes and soldering alloys containing silver. To increase the strength, these materials are alloyed at temperatures of 500…1100°C, which ensures a strong adhesion, using nickel, manganese or aluminum additions, which provides greater durability to the parts. The heating of the part is carried out in a vacuum, in a gas flow containing argon. In addition to molten materials, powdered alloys are also used. The coefficient of linear expansion of steels upon heating is 2…3 times higher than that of hard alloys, therefore, to obtain a qualitative joint during soldering, uniform heating of the object to be soldered, especially of the soldering site, is necessary. To avoid deformation of the part with the intermediate layer deposited by gluing, both are cooled in an oven, gradually, to a temperature of 200…250°C for 6 hours. If necessary, the object is hardened immediately after gluing [1].
Dezavantajul acestui procedeu constă în faptul că pentru lipire sunt necesare temperaturi înalte şi materiale de lipit în bază de argint, care sunt scumpe, iar folosirea unor fluxuri ce conţin fluor face ca operaţiile să fie periculoase pentru sănătate şi mediul ambiant. The disadvantage of this process is that high temperatures and silver-based soldering materials are required for soldering, which are expensive, and the use of fluxes containing fluorine makes the operations dangerous for health and the environment.
Alt procedeu de lipire include aplicarea pe suprafaţa de lipit a unui strat de acoperire intermediar, diferit de materialul de lipit şi care ulterior va deveni suprafaţă de lipit. Acest lucru poate fi realizat, de exemplu, acoperind titanul cu staniu, cu argint sau cu cupru prin scufundarea piesei în topitura metalului nominalizat la temperatura de 650…700°C timp de 10…20 min. Pentru activarea suprafeţei şi depunerea unui strat de acoperire intermediar pe suprafaţa pieselor pot fi folosite şi metode electrochimice sau chimice [1]. Another soldering process involves applying an intermediate coating layer to the soldering surface, different from the soldering material and which will later become the soldering surface. This can be achieved, for example, by coating titanium with tin, silver or copper by immersing the part in the melt of the named metal at a temperature of 650…700°C for 10…20 min. Electrochemical or chemical methods can also be used to activate the surface and deposit an intermediate coating layer on the surface of the parts [1].
Dezavantajul acestui procedeu constă în faptul că acoperirile din argint sunt costisitoare şi pot fi utilizate în această calitate numai în cazuri speciale. The disadvantage of this process is that silver coatings are expensive and can only be used in this capacity in special cases.
Mai este cunoscut un procedeu de activare a suprafeţelor dure cu conţinut de wolfram pentru lipire la temperatură joasă, care include activarea electrochimică a suprafeţei aliajului cu un electrolit compus din hidroxid de sodiu şi nitrat de sodiu, sau clorură de amoniu şi hidroxid de amoniu, sau clorură de amoniu şi nitrat de amoniu, la o densitate a curentului, tensiune pe electrozi şi temperatură prestabilită. Deoarece legătura dintre stratul metalic depus prin metoda electrolitică şi metalul de bază determină rezistenţa îmbinării ulterioare la lipire, este foarte importantă operaţia de curăţare a suprafeţei de lucru înainte de aplicarea acoperirii, care include eliminarea peliculei de oxizi prin degresare, mordansare sau activare chimică. Oţelul, de obicei, se tratează cu acid clorhidric la rece sau cu acid sulfuric fierbinte, iar aliajele dure se tratează cu soluţii de bază alcalină sau de acid sulfuric. Apoi pe suprafaţa curăţată a pieselor se depun straturi de acoperire de cupru sau de nichel prin metoda galvanică. Lipirea se face prin diverse metode: cu ciocanul de lipit electric, sau folosind plăci ori băi cu material topit, lămpi de lipit, arzător de gaze sau laserul [2]. There is also a known process for activating hard tungsten-containing surfaces for low-temperature soldering, which includes electrochemical activation of the alloy surface with an electrolyte composed of sodium hydroxide and sodium nitrate, or ammonium chloride and ammonium hydroxide, or ammonium chloride and ammonium nitrate, at a predetermined current density, electrode voltage and temperature. Since the bond between the metal layer deposited by the electrolytic method and the base metal determines the resistance of the subsequent soldering joint, the cleaning operation of the working surface before applying the coating is very important, which includes removing the oxide film by degreasing, etching or chemical activation. Steel is usually treated with cold hydrochloric acid or hot sulfuric acid, and hard alloys are treated with alkaline base or sulfuric acid solutions. Then, copper or nickel coating layers are deposited on the cleaned surface of the parts by the galvanic method. Soldering is done by various methods: with an electric soldering iron, or using plates or baths of molten material, soldering lamps, gas burners, or lasers [2].
Dezavantajul acestui procedeu constă în complexitatea tratării galvanice cu utilizarea acizilor sau a bazelor alcaline şi degajarea vaporilor nocivi la temperaturi înalte. The disadvantage of this process is the complexity of the galvanic treatment with the use of acids or alkaline bases and the release of harmful vapors at high temperatures.
Cea mai apropiată soluţie este un procedeu de aliere cu scântei, folosind un electrod-sculă executat din nichel-aluminiu, în soluţie de dielectric, la o intensitate a curentului de 100…120 A, o energie a impulsului de 0,36…0,55 J şi o durată a impulsului de 240…300 µs [3]. The closest solution is a spark alloying process, using a tool electrode made of nickel-aluminum, in a dielectric solution, at a current intensity of 100…120 A, a pulse energy of 0.36…0.55 J and a pulse duration of 240…300 µs [3].
Dezavantajul acestui procedeu constă în faptul că acesta nu permite decarbonizarea eficientă a suprafeţei pieselor ce urmează a fi lipite. The disadvantage of this process is that it does not allow for efficient decarbonization of the surface of the parts to be bonded.
Problema pe care o soluţionează invenţia constă în sporirea calităţii lipirii unui strat de acoperire intermediar, diferit de materialul de lipit, pe suprafaţa aliajelor dure sinterizate sau a oţelurilor carbon. The problem solved by the invention consists in increasing the quality of bonding an intermediate coating layer, different from the bonding material, to the surface of sintered hard alloys or carbon steels.
Procedeul, conform invenţiei, include depunerea pe suprafaţa de lipit, prin aliere cu scântei, la o frecvenţă a impulsurilor de 200…500 Hz şi durata de 200…400 µs, a unui strat de acoperire intermediar, care nu este un material de lipit, spoirea şi lipirea ulterioară a stratului obţinut cu aliaje uşor fuzibile, cu utilizarea unui flux de colofoniu. The process, according to the invention, includes depositing on the soldering surface, by spark alloying, at a pulse frequency of 200…500 Hz and a duration of 200…400 µs, an intermediate coating layer, which is not a soldering material, subsequent soldering and bonding of the obtained layer with easily fusible alloys, using a rosin flux.
Rezultatul invenţiei constă în curăţarea completă a suprafeţei aliajului sau a oţelului de stratul de oxizi şi de impurităţi, fapt ce îmbunătăţeşte adeziunea la ele a stratului de acoperire intermediar. The result of the invention consists in the complete cleaning of the surface of the alloy or steel from the layer of oxides and impurities, which improves the adhesion of the intermediate coating layer to them.
Acest procedeu oferă următoarele avantaje tehnologice: This process offers the following technological advantages:
- posibilitatea de a efectua tratarea locală a suprafeţelor fără încălzirea piesei întregi; - the possibility of performing local surface treatment without heating the entire piece;
- formarea pe etape a grosimii şi a rugozităţii stratului de acoperire; - step-by-step formation of the thickness and roughness of the coating layer;
- este simplu şi econom; - it is simple and economical;
- datorită mobilităţii şi caracterului local al tratării suprafeţei, încălzirii neînsemnate a piesei, se asigură o adeziune sigură a stratului de acoperire cu materialul de bază. - due to the mobility and local nature of the surface treatment, insignificant heating of the part, reliable adhesion of the coating layer to the base material is ensured.
Exemplu de realizare a procedeului Example of the process
Pentru procesul de aliere se utilizează o instalaţie „ПЭЛ-23”. În calitate de piesă se ia un electrod T15K6 din aliaj dur, pe care se aplică un strat de acoperire intermediar de cupru. Piesa se fixează într-o menghină, se conectează la polul negativ al sursei de curent electric. Electrodul de cupru se fixează într-un suport conectat la polul pozitiv al sursei de curent electric. Iniţial tratarea se efectuează în regim grosier la o frecvenţă a impulsurilor de circa 200 Hz şi o durată a impulsurilor de 400 µs. Pentru a evita supraîncălzirea piesei, procesul tratării se întrerupe periodic. După obţinerea unei grosimi necesare a stratului acoperitor, de obicei de 100…150 µm, se efectuează alierea de finisare, la o frecvenţă a impulsurilor de 500 Hz şi o durată de 200 µs, ceea ce permite obţinerea stratului de acoperire final. For the alloying process, a “PEL-23” installation is used. A T15K6 hard alloy electrode is used as a workpiece, on which an intermediate copper coating is applied. The workpiece is fixed in a vice, connected to the negative pole of the electric current source. The copper electrode is fixed in a holder connected to the positive pole of the electric current source. Initially, the treatment is carried out in a coarse mode at a pulse frequency of about 200 Hz and a pulse duration of 400 µs. To avoid overheating of the workpiece, the treatment process is periodically interrupted. After obtaining the required thickness of the coating, usually 100…150 µm, finishing alloying is carried out at a pulse frequency of 500 Hz and a duration of 200 µs, which allows obtaining the final coating.
După tratare piesa se spoieşte şi se lipeşte cu materiale de lipit care se topesc uşor la T ≤ 200°C cu utilizarea fluxurilor de colofoniu. After treatment, the piece is sanded and glued with adhesives that melt easily at T ≤ 200°C using rosin fluxes.
1. Справочник по пайке. Москва, Машиностроение, 1984, с. 244-246, 246-248 1. Справочник по пайке. Moscow, Машиностроение, 1984, p. 244-246, 246-248
2. MD 3606 G1 2008.05.31 2. MD 3606 G1 2008.05.31
3. SU 1521542 A1 1989.11.15 3. SU 1521542 A1 1989.11.15
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| MDS20090055A MD164Z (en) | 2009-04-15 | 2009-04-15 | Process for brazing sintered hard alloys and carbon steels |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| MDS20090055A MD164Z (en) | 2009-04-15 | 2009-04-15 | Process for brazing sintered hard alloys and carbon steels |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| MD164Y true MD164Y (en) | 2010-03-31 |
| MD164Z MD164Z (en) | 2010-10-31 |
Family
ID=43568936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| MDS20090055A MD164Z (en) | 2009-04-15 | 2009-04-15 | Process for brazing sintered hard alloys and carbon steels |
Country Status (1)
| Country | Link |
|---|---|
| MD (1) | MD164Z (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| MD685Z (en) * | 2013-02-13 | 2014-05-31 | Институт Прикладной Физики Академии Наук Молдовы | Process for producing a multilayer coating by the electrospark alloying method |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| MD561Z (en) * | 2012-02-08 | 2013-06-30 | Институт Прикладной Физики Академии Наук Молдовы | Process for anticorrosion machining of steel |
Family Cites Families (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA608295A (en) * | 1960-11-08 | S. Broad Charles | Soldering of copper or copper alloys | |
| SU656793A1 (en) * | 1975-11-03 | 1979-04-15 | Институт Прикладной Физики Ан Молдавской Сср | Method of spark-discharge alloying |
| SU625895A1 (en) * | 1977-03-22 | 1978-09-30 | Опытный Завод Института Прикладной Физики Ан Молдавской Сср | Electric spark alloying method |
| JPS5447845A (en) * | 1977-09-22 | 1979-04-14 | Hitachi Cable Ltd | Low melting point copper alloys for welding and soldering |
| DE3433200A1 (en) * | 1984-09-10 | 1986-03-20 | Josef Kössen Tirol Dagn | Process for soldering aluminium, magnesium and alloys of these metals |
| SU1521542A1 (en) * | 1987-06-18 | 1989-11-15 | Всесоюзное Научно-Производственное Объединение Восстановления Деталей "Ремдеталь" | Method of spark-erosion alloying |
| SU1745476A1 (en) * | 1990-02-28 | 1992-07-07 | Опытный Завод Энергетического Машиностроения Научно-Производственного Объединения "Энергомаш" | Solder for soldering copper and copper alloys |
| RU2036064C1 (en) * | 1991-05-14 | 1995-05-27 | Пашков Игорь Николаевич | Solder for soldering of copper and its alloys and method of its production |
| RU2041783C1 (en) * | 1993-04-08 | 1995-08-20 | Научно-производственное предприятие "Гамма" | Solder for soldering mainly copper and copper-based alloys |
| DE4433548A1 (en) * | 1994-09-06 | 1996-03-07 | Ingbuero Wolf & Partner Gmbh | Soldering copper@ alloys by electrical resistance heating |
| RU2140834C1 (en) * | 1999-01-19 | 1999-11-10 | Бушма Павел Александрович | Method for electric-spark alloying and apparatus for performing the same |
| RU2164844C1 (en) * | 1999-08-26 | 2001-04-10 | Чистяков Юрий Львович | Method and apparatus for electric spark alloying |
| US6953146B2 (en) * | 2002-10-24 | 2005-10-11 | Leonard Nanis | Low-temperature flux for soldering nickel-titanium alloys and other metals |
| US20040151616A1 (en) * | 2003-02-04 | 2004-08-05 | Sabarese Daniel M. | Lead-free alloys, composition thereof, methods of preparation and uses for soldering and babbitting |
| EP1462207A1 (en) * | 2003-03-29 | 2004-09-29 | Grillo-Werke AG | Welding, soldering or brazing method under a protective atmosphere of metallic workpieces using a Zn/Al filler material |
| US20050100474A1 (en) * | 2003-11-06 | 2005-05-12 | Benlih Huang | Anti-tombstoning lead free alloys for surface mount reflow soldering |
| RU2278007C2 (en) * | 2004-09-13 | 2006-06-20 | Российская Федерация, от имени которой выступает государственный заказчик Федеральное агентство по атомной энергии | Method for soldering parts one of which is of titanium carbide or titanium carbide base alloys |
| UA7803U (en) * | 2004-11-15 | 2005-07-15 | Univ Nat Mining | Method for spark alloying |
| RU2280548C1 (en) * | 2005-03-09 | 2006-07-27 | Виталий Евгеньевич Дьяков | Flux for low temperature soldering of aluminum and its alloys |
| MD3606G2 (en) * | 2007-02-27 | 2008-12-31 | Институт Прикладной Физики Академии Наук Молдовы | Process for activating the tungsten-containing hard alloys surfaces for low-temperature brazing (variants) |
| RU2354514C2 (en) * | 2007-05-21 | 2009-05-10 | Андрей Валентинович Полторыбатько | Method of soldering silumin coated aluminium and aluminium alloys |
| RU2359792C2 (en) * | 2007-06-25 | 2009-06-27 | Российская Федерация, от имени которой выступает Государственный заказчик - Федеральное агентство по атомной энергии | Soldering method of refractory metal with corrosion-resistant, heat-resistant steels or nickel alloys |
| RU2359793C1 (en) * | 2007-10-01 | 2009-06-27 | Владимир Васильевич Каржавин | Development method for parts soldering made of corrosion-resistant steels and nickel alloys (versions) |
-
2009
- 2009-04-15 MD MDS20090055A patent/MD164Z/en not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| MD685Z (en) * | 2013-02-13 | 2014-05-31 | Институт Прикладной Физики Академии Наук Молдовы | Process for producing a multilayer coating by the electrospark alloying method |
Also Published As
| Publication number | Publication date |
|---|---|
| MD164Z (en) | 2010-10-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103862147B (en) | Filled wire pulse tungsten argon arc welding process between molybdenum-copper alloy and nickel-base superalloy | |
| CN102744502B (en) | Wire filling tungsten electrode argon-arc welding process for TA15 titanium alloy and austenitic stainless steel | |
| CN110257682A (en) | A kind of preparation method of high entropy alloy material and its coating | |
| CN101596632B (en) | Brazing method of aluminum material and copper material in air atmosphere | |
| CN107010849B (en) | Laser welding process method for molybdenum group glass and kovar alloy | |
| CN104084710A (en) | Titanium-based amorphous brazing filler metal and preparation method thereof as well as brazing method of TC4 titanium alloy | |
| CN108299006A (en) | A kind of method of compound high entropy solder coated laser ceramic soldering and metal | |
| CN101941106B (en) | High temperature brazing process of super nickel laminated material and Cr18-Ni8 stainless steel | |
| CN106270888B (en) | A method of improving Sn base leadless solder ULTRASONIC COMPLEX brazed aluminum and its alloy-junction electrochemical corrosion resistant performance | |
| CN109128542B (en) | A method for composite welding of stainless steel seawater filter element by laser spot welding and vacuum brazing | |
| CN103628016A (en) | Protection method for high-temperature corrosion resistance of ultrasonic amplitude transformer | |
| CN105458437B (en) | A kind of low temperature glass method for welding of anodic oxidation auxiliary | |
| CN103540929B (en) | A kind of cladding method of Magnuminium surface wearable coating | |
| MD164Y (en) | Process for brazing sintered hard alloys and carbon steels | |
| CN111318805B (en) | Laser welding method for high-entropy alloy with preset powder | |
| CN101402150B (en) | Aluminum impeller air brazing process | |
| CN101492799A (en) | Wear-resistant cast iron coating and production method | |
| CN103540933B (en) | The preparation method of a kind of Cr-Ni-Mo system stainless steel surface Functional Graded Ceramics wear-resistant coating | |
| CN105598541A (en) | Method for plating surfaces of Ni-Cr alloy wires with zinc at low temperature | |
| CN101487104A (en) | Carbon steel / stainless steel composite material and preparation | |
| CN108385103A (en) | A kind of Magnesiumalloy surface modifying method based on electric-resistance seam-welding | |
| WO2017202233A1 (en) | Metal surface mechanically-assisted electrothermal alloying preparation method | |
| US20170002476A1 (en) | Method for manufacturing a part coated with a protective coating | |
| RU2569856C2 (en) | Soldering method of heat exchanger | |
| CN104962911A (en) | Novel process technology method for improving corrosion resistance of magnesium alloy |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| KA4Y | Short-term patent lapsed due to non-payment of fees (with right of restoration) |