Soldering, Brazing and Welding

Hard-soldering by brazing with spelter is used to a very great extent in the metal industries, especially in the manufacture of cycles and motor-cars. Although several mechanica...

=Choice between Blowpipe and Bit.=--The method of heating depends on the size of the work, or rather the area to be soldered, and the conveniences at the command of the worker....

Of late years oxy-acetylene welding and cutting have made great strides, and have placed at the disposal of the metal-working trades a means of doing many things that hitherto w...

=The Mouth Blowpipe.=--Although soft-soldering is usually associated with the use of a copper bit, quite a number of jobs can be done without one, using instead a bunsen burner...

=Plumbers’ Solder.=--As already stated, coarse, or plumbers’ wiping solder, is made in the proportion of 2 of lead to 1 of block tin. Care must be taken that the lead is quite p...

Lead-burning or flaming is the autogenous welding of lead by means of either an aero-hydrogen or oxy-coal-gas blowpipe flame. In the past the apparatus required included a hydro...

A solder should melt at a slightly lower temperature than the metals which it unites, and should possess the quality of alloying with the two surfaces, thus effecting a sound an...

Hard-soldering is chiefly of two kinds, brazing and silver-soldering, the former being employed for iron and steel, the solder used being known as “spelter,” a brass alloy which...

It is well known to those accustomed to the art of soldering that there is no solder which operates with aluminium in the same way that ordinary solders operate with tinplate, c...

=A Paraffin Brazing Blow-lamp.=--The brazing blowlamp shown in Fig. 70 was made at a total cost of less than 4s. The illustration is printed to a scale of about one-quarter full...

Two methods of soldering are in common use among jewellers and silversmiths. Soft-soldering is done with fine solder (1 of lead and 2 of tin), and is used for articles that will...

=How to Make a Bench Gas Blowpipe.=--The blowpipe illustrated by Fig. 67 gives a powerful flame. It can be clamped to the edge of the workbench by means of a winged nut, a hole...

=Contact Welding.=--The electric welding of iron strips and sheets is usually done by the Thomson process of “contact-welding.” In this process the metal is brought to a welding...

=Why a Flux is Required.=--The great essential to successful soldering is the chemical cleanliness of the surfaces to be united, and the proper use of a flux. Although work may...

Iron and steel can be joined by heating until they become plastic and then consolidating the two members of the joint by hammer blows, the work being supported on an anvil. Corr...

The stoves and lamps burning paraffin in the form of vapour have become very popular on account of their good heating properties, portability, and little attention required. The...

Apart from the use of rivets, screws, etc., metal is commonly joined by soldering, brazing, or welding, three groups of processes that have one thing in common--the use of heat...