This article does not cite any sources. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. Find sources: "Pin brazing" – news · newspapers · books · scholar · JSTOR(June 2011) (Learn how and when to remove this message)
Pin brazing is an easy, metallurgically safe method of making electrical connections to steel and ductile iron pipelines as well as other metallic structures, which are to be cathodically protected or electrically earthed.
The pin brazing technique is based primarily upon Electric-arc silver soldering using a specially designed portable pin brazing unit, a hollow brazing pin containing silver solder and flux.
The brazing process is initiated by depressing a trigger on the brazing gun. This, as with most forms of electrical welding, simply completes a circuit through which a DC current is passed. The pin tip is the point of highest resistance at which point an arc is drawn, melting the solder flux whilst simultaneously heating the lug material and the surface of the structure or pipeline to the required soldering temperature.
After approximately 1.5 seconds the circuit is mechanically or electronically broken, the solenoid is de-energised and the brazing pin is pushed forward into the molten pool of brazing alloy. The pin tip, brazing alloy, flux and lug cool into a homogenous unit.
The pin brazing process is well suited for joints between insulated pipe sections, connection to measuring cables, installation of sacrificial anodes and bonding zinc bracelets to offshore pipelines, due to the ease and speed of installation, high mechanical strength and extremely low resistance.
Within a cathodic protection system there are a multitude of connection requirements for anode cables, measuring posts etc., being extremely versatile, the pin brazing system is ideally suited to this. Attachments can be made vertically, horizontally or even overhead. If preferred, threaded pins with nuts can be attached or cable bonded directly onto the pipe by means of a special cable lug which can be crimped on site or supplied complete as a unique integrally crimped attachment. The pin brazing unit contains all the equipment and tools required to make safe cable connections. A welding generator may also be utilized as a power source wherever a battery unit may be impractical or a great many connections need to be made in such places as pipe-coating yards or lay-barges etc.
The pinbrazing technique is based primarily upon Electric-arc silver soldering using a specially designed portable pinbrazing unit, a hollow brazing pin...
hard soldering or brazing. Brazing filler metal is stronger than silver solder, which is stronger than lead-based soft solder. Brazing solders are formulated...
which may create permanent joints, include: crimping, welding, soldering, brazing, taping, gluing, cement, or the use of other adhesives. Force may also...
and appliances. In Australia, copper tubes are generally brazed with silver-containing brazing rods rather than soldered. This type of connection ensures...
taps and dies. The ejector pin (also called a pilot pin) has three major functions:[citation needed] Centering - The ejector pin is exactly positioned to...
A bicycle seatpost, seatpin, saddlepole, saddle pillar, or saddle pin is a tube that extends upwards from the bicycle frame to the saddle. The amount...
rear wheel Cone: holds bearings in place, pressed against the cup Cotter: pin for attaching cottered cranks Coupler: to connect tubing together Crankset...
presentation to remove bones from fillets of fish in a process known as pin boning, and are as tongs used to serve pieces of cake to restaurant patrons...
environment, such as printed circuit board, via leads such as lands, balls, or pins; and protection against threats such as mechanical impact, chemical contamination...
produce a functional computer, in part due to it being packaged in a small 18-pin "memory package", which ruled out the use of a separate address bus (Intel...
fuel tank. The fuselage is steel tubing. The design also features pinned and brazed gusset joints as opposed to conventionally welded joint clusters....
Conditions of Delivery Withdrawn DIN EN 1044 EN 1044 DIN 8513-3 Brazing filler metals; silver brazing filler metals containing not less than 20% of silver; composition...
through a pin on the bolt body and a recessed camming guide machined into the bolt carrier. The bolt carrier itself is guided by two guide rods brazed to it...
dowel pins, which need not be otherwise retained in the body holding them. Other holes, reamed slightly larger in other parts, will fit these pins accurately...
facing sets are intended for frame finishing work after welding and/or brazing, as the frame tubes tend to deform slightly after this process, and for...
be used where there is a need for rapid assembly and disassembly. Dowel pins are sometimes used in addition to bolts, to ensure accurate alignment, particularly...
Valkyrie made extensive use of stainless steel honeycomb panels using a brazing process they developed. A summary of the important developments in the...
prefer silicon bronze because of the ready availability of silicon bronze brazing rod, which allows color-matched repair of defects in castings. Aluminum...
as a cutting tool for machining chill cast iron and as brazing and welding fixtures and pins, particularly for resistance welding. Other applications...
frame. Ejection was achieved by the rod normally housed in the hollow axis pin. The hammer block was designed to prevent firing unless the trigger was fully...
of relatively low flow rates. An instrument needle valve uses a tapered pin to gradually open a space for fine control of flow. The flow can be controlled...
the Event Flag (EF) pins. To test pins one through four, change B4 to B2, which tests EF2 pin. LOOP B4 EFbranch; because EF pinspins are active low this...
Global Information