This instrument will do any soldering, and will be suitable for melting gold, silver, and brass, or brazing odd jobs in iron or steel.
In making the brazing mixture, use about equal parts, in bulk, of No.
The petrol lamp has no pump, except on high-power brazing lamps whose use requires expert handling.
A mixture of borax and water and spelter should now be applied where the brazing is required, and gentle heat then brought to bear on it until the water is evaporated.
If brazing by means of a smithy fire, the spelter will show a blue flame when it starts to run, and the article must then be removed from the fire.
In cycle brazing, the first consideration is the means of heating the heaviest joint to a brazing heat.
In brazing together the broken parts of a key stem, first it is necessary to file the fractured ends quite true; this may entail the shortening of the key by 1/4 in.
The quantities of gas and air can be readily and more delicately adjusted during the actual brazing process, then as soon as the spelter fuses and the gas is turned off, the stream of cold air soon counteracts any excessive heat.
If practicable, the parts should be held in such a way that they can be turned over during the brazing process without disturbing the relation of the parts, thus affording a better chance to apply the flux and brazing material.
The secret of success in brazing lies in properly cleaning up the work to begin with, and in disposing the borax so as to prevent subsequent oxidation.
Gun-metal and tap-metal do not lend themselves to brazing so readily as iron or yellow brass, and are usually more conveniently treated by means of silver solder.
The art of brazing is applied to metals which will withstand a red heat, and the joints so soldered have the strength of brass.
The "spelter," which is really only finely granulated fusible brass, is used for brazing iron joints.
This circumstance shows how little the principles of gun-making are understood by the first gun-makers, the brazing of barrels being practised by all.
No maker either understands science or studies quality, who advocates brazing and hollow ribs.
The Belgian barrels, and French also, are of good iron; and I fear not contradiction in asserting their inferiority to English barrels mostly consists in the foolish practice of brazing them together from end to end.
As no workman could be found either competent to do the work or willing to undergo the personal discomfort, the writer was obliged to do all this brazing work himself.
Instead of discarding these bed plates then for new ones, they were strengthened by brazing to them crescent-shaped pieces, as shown in the drawings and photographs.
Cut seven pieces of the tube four and a half inches long each, and connect the holes on opposite sides by brazing the tubes across into the holes, as in the figure.
Borax is used as the flux, both for the alloy employed in brazing and for silver solder.
Such flanges must be made of nearly pure copper, to withstand the temperature, usually 98 of copper to 2 of tin (brazing metal).
But in brazing and soldering the parts to be united are generally nearly cold, and only the soldering material is fused, so that the conditions are less favourable to the removal of oxide than in welding processes.
A form of torch which burns the acetylene after mixing it with atmospheric air at normal pressure rather than with the oxygen under higher pressures has been found useful in certain pre-heating, brazing and similar operations.
For brazing thin sheet brass and light brass castings, a metal is used which contains two-thirds tin and one-third antimony.
With thebrazing torches in common use two heads are furnished, being supplied from the same source of fuel, but with separate regulating devices.
This avoids the danger of melting one before the other reaches the brazing point.
A still softer brazing metal is composed of half copper, three-eighths zinc and one-eighth tin.
Welds in malleable iron are usually far from satisfactory and a better joint is secured by brazing the edges together with bronze.
When brazingtwo different metals, the flame should play only on the one that melts at the higher temperature, the lower melting part receiving its heat from the other.
Brazing is done by clamping the work in the jaws and heating until the flux, then the spelter has melted and run into the joint.
The spatula is used for placing thebrazing metal on the work and for handling the flux that is required in this work as in all other similar operations.
All of the above brazing metals are used in powder form so that they may be applied with the spatula where the joint is exposed on the outside of the work.
Another very satisfactory form of torch for brazing is the acetylene-air combination described in the chapter on welding instruments.
Large jobs of brazing may be handled with a charcoal fire built in the forge, as this fuel produces a very satisfactory and clean fire.
When brazing some cast-iron, the break should be reinforced on the unexposed side by a plate of wrought iron or steel.
It is well to mention here that a forge fire that has been used for brazing must be thoroughly cleaned before it can be used again for any welding purposes.
Brazing of cast-iron: Cast-iron is prepared for brazing in the same way as steel or iron is prepared.
Place the centre on the fire and put the brazing material on the joint around the post.
If this is well done the brazing material will find its way to the closest joints and fix them.
They can be repaired only bybrazing the broken ends together.
This article will tell about brazingof wrought iron, cast-iron, and steel in the forge fire.
Wire it in for brazing so that the post will stand perpendicular to the base.
Dip the spoon into the brazing material and put a little of the smelter on the joints.
In order to do this a coppersmith must be kept at the unit workshop, and only part of his time will be employed in this work of brazing petrol unions.
As an example, broken unions of petrol pipes commonly occur in all petrol engines, and if a small unit workshop exist, the brazing out and repair of such broken unions can be carried out there.
These men become absolute experts in brazing broken unions, and before very long can do in a few minutes a job of this sort which would take a coppersmith with the unit workshop considerably longer.
The tubing and castings are joined together by hard soldering, brazing or autogenous welding.
The only book that shows you just how to handle any job of brazing or soldering that comes along; it tells you what mixture to use, how to make a furnace if you need one.
Small brazing work can often be done in less time than would be consumed in going to the smith's hearth and back again, independently of the policy of keeping a man in his own place, and to his own work.
I will now, with a blowpipe and small foot blower, heat a short length of locomotive boiler tube to a brazing heat on the table; and, in conclusion, will convert the table into a small foundry.
I only need instance wire card-making and the brazing shops of wire cable makers to show that a large and free use of gas is compatible with the strictest economy and profitable working.
Flanges to stand brazing may be made of copper 1 lb.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "brazing" in a variety of sentences. We hope that you will now be able to make sentences using this word.
