Methods Of Joining Metals. Part 3
Description
This section is from the book "Handcraft In Wood And Metal", by John Hooper, Alfred J. Shirley. Also available from Amazon: Handcraft In Wood And Metal.
Methods Of Joining Metals. Part 3
Table Showing Method By Which Metals May Be Joined
Name of Metal. | Soft Soldered. | Silver Soldered. | Brazed. | Autogenous Soldering or Burning, including Oxygen Acetylene Welding. | Welding, Old Method. | |||||
Flux. | Flux. | Flux. | Flux. | Flux. | ||||||
No | __ | No | __ | No | __ | Yes | None | No | ||
Yes (after being coppered) | Zinc chloride or Sal ammoniac | Yes | Borax | Yes | Borax | No | - | ,, | - | |
Brass . | Yes | ,, ,, | ,, | ,, | ,, | ,, | Yes | Borax | ,, | - |
Britannia metal | ,,i | ,, ,, | No | -. | No | - | No | - | ,, | - |
Bronze . | ,, | 11 11 | Yes | Borax | Yes | Borax | Yes | Borax | ,, | - |
Copper . | Zinc chloride, Sal ammoniac, or Rosin | ,, | ,, | ,, | ,, | ,, | Borax | ,, | __ | |
,, | ,, ,,1 | ,, | ,, | ,, | ,, | No | - | ,, | - | |
Dutch metal . | ,, | ,, ,, | ,, | ,, | ,, | ,, | J) | - | ,, | - |
German silver | ,, | ,, ,, | ,, | ,, | ,, | ,, | ,, | - | ,, | - |
Gilding metal | ,, | 11 11 | ,, | ,, | ,, | ,, | ,, | - | ,, | - |
Gold . | ,, | ,, ,, | ,, | ,, | No | - | ,, | - | ,, | - |
Gunmetal | ,, | ,, ,, | ,, | ,, | Yes | Borax | Yes | Borax | ,, | - |
Iron, galvanized . | ,, | Hydrochloric acid | No | No | No | No | No | - | ,, | - |
Iron, wrought | ,, | ,, ,, | ,, | ,, | Yes | Borax | Yes | None | Yes | Silver Sand |
Iron, cast | Yes, not strong | Zinc chloride | ,, | No | No | ,, | Borax | No | - | |
Yes | Zinc Chloride or Tallow, etc. | ,, | --- | ,, | ,, | ,, | None | ,, | - | |
Manganese bronze | ,, | ,, ,, | Yes | Borax | Yes | Borax | No | - | ,, | - |
Mild steel | ,, | ,, ,, | ,, | ,, | ,, | ,, | Yes | None | Yes | Silver Sand |
Muntz metal . | ,, | ,, ,, | ,, | ,, | ,, | ,, | No | - | No | - |
Ormolu | ,, | ,, ,, | ,, | ,, | ,, | ,, | Yes | Borax | ,, | - |
Pewter . | Yes, but using special solder | Tallow or Galli-poli oil | No | -- | No | - | No | - | ,, | - |
Phosphor bronze . | Yes | Zinc chloride or Sal ammoniac | Yes | No | Yes | Borax | ,, | - | ,, | - |
Silver . | ,, | ,, ,, | ,, | ,, | No | - | ,, | - | ,, | - |
Tin | Yes, with care | ,, ,, | No | - | ,, | - | Yes | - | ,, | - |
Tinned plate. | Yes | ,, ,, | ,, | - | ,, | - | No | - | ,, | - |
Tool steel | ,, | ,, ,, | Yes | Borax | Yes | Borax | Yes | None | Yes | 10 Borax, 1 Sal ammoniac or Borax and Venetian Red |
Zinc | ,, | Zinc chloride, Sal ammoniac or Hydrochloric acid | No | - | No | - | No | - | No | - |
Note
When rosin is mentioned Venice turpentine will do as well, and is cleaner.
Ch. xvii, f. 22 (1). This pulley of cast iron is forced on to the steel mandrel, or lathe spindle as it is called. This appears as if made in one piece.
A Shrink Fit is where advantage is taken of the property of expansion of metals, and it is utilized in many ways. The method is used where a collar has to be put on some work to hold it together. The collar is made slightly smaller than the work it has to go on, it is heated to a bright red and put on. On cooling it contracts, so binding the work tightly together. Cast iron cannot be utilized in this manner. For example see Ch. xii, Fig. 12, No. 1.
Joints In Tinned Plate Work
These are usually plain or folded lap joints (see A and B, Fig. 8, Ch. viii). The plain lap joints are soft soldered and riveted with tinned iron flat-headed rivets. Folded lap joints, as illustrated in Fig. 8, Ch. viii Letter B, can be made by hand or in a machine called a folder, and when made by machinery they are so well done that they are watertight without the aid of soft solder.
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