GB639143A - Improvements in or relating to a method of bonding a plurality of metal members - Google Patents
Improvements in or relating to a method of bonding a plurality of metal membersInfo
- Publication number
- GB639143A GB639143A GB13777/47A GB1377747A GB639143A GB 639143 A GB639143 A GB 639143A GB 13777/47 A GB13777/47 A GB 13777/47A GB 1377747 A GB1377747 A GB 1377747A GB 639143 A GB639143 A GB 639143A
- Authority
- GB
- United Kingdom
- Prior art keywords
- per cent
- warm
- aluminium
- immersing
- consist
- 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.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
- B21D53/02—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
- B21D53/06—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of metal tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Nonmetallic Welding Materials (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
A bundle of tubes to be welded at their ends are cleaned by immersing for 10-30 seconds in a warm 10 per cent solution of sodium hydroxide followed by rinsing in water, then immersing in a warm 10 per cent solution of nitric acid for 1 to 2 minutes, and finally rinsing in warm water. The welding flux powder may consist of 34.7 per cent potassium chloride, 49 per cent of sodium chloride, 8.2 per cent of cryolite, 1 per cent of strontium chloride, 1 per cent of sodium fluoride, 6.1 per cent moisture and a trace of lithium. The tubes may consist of an aluminium alloy of 0.25 per cent copper, 0.6 per cent magnesium, 0.35 per cent silicon and the balance aluminium with melting point from 1140-1210 DEG F, or an alloy of 0.25 per cent chromium, 0.25 per cent copper, 1 per cent magnesium, 0.6 per cent silicon and the rest aluminium, and having a melting point of 1115 to 1210 DEG F.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US639143XA | 1946-10-16 | 1946-10-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB639143A true GB639143A (en) | 1950-06-21 |
Family
ID=22052329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB13777/47A Expired GB639143A (en) | 1946-10-16 | 1947-05-22 | Improvements in or relating to a method of bonding a plurality of metal members |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB639143A (en) |
-
1947
- 1947-05-22 GB GB13777/47A patent/GB639143A/en not_active Expired
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