A Wide Range
GM Copper Alloys creates custom precision seam welding discs, spot welding electrodes, wire welding electrodes, butt welding electrodes, die casting pistons/plungers (cold chamber), bearings & amp; bushings, flanges, double flange bearings, full half bearings, shafts, moulds and special machined parts that can be shipped on a global basis and in full accordance with most international standards.
Processing Sizes in Metric
Round Bars, Rings, Discs, Wheels: dia 40 to 460 mm.
Square Bars: 25×25 to 150×150 mm.
Flat Bars: 10×30 to 150×400 mm.
Plate (Edge Thickness): > 10 mm.
Max Length Per Item: 1000 mm.
Max Processing Weight Per Item: 250 kg
Die Casting
Die casting is a metal casting process that is characterized by forcing molten metal under high pressure into a mold cavity. The mold cavity is created using two hardened tool steel dies which have been machined into shape and work similarly to an injection mold during the process.
Alloys Required
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CuNiSiCr
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CuCoNiBe
-
CuNiBe
-
CuBe2
Available Sizes
From dia 40 mm and above high pressure die casting pistons and plunger tips in semi finished or finished (according to drawing) forms.
Mould and Dies
Injection moulding is a manufacturing process for producing parts by injecting material into a mould. Injection moulding can be performed with a host of materials mainly including metals. Material for the part is fed into a heated barrel, mixed, and forced into a mould cavity, where it cools and hardens to the configuration of the cavity.
The attributes of copper alloys that make them attractive to the mold industry are high thermal conductivity, ease of machining by a variety of processes, and corrosion resistance to water, cooling fluids and the plastics being injected.
Alloys Required
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CuCoNiBe
-
CuNiBe
-
CuBe2
Available Sizes
Cast or forged copper alloys into various shapes upon request.
Resistance Welding
Seam Welding Electrodes
Seam welding produces an extremely durable weld because the joint is forged due to the heat and pressure applied. A properly welded joint formed by resistance welding can easily be stronger than the material from which it is formed.
The electrode wheels apply a constant force to the work pieces and rotate at a controlled speed. Seam welding equipment is normally fixed and the components being welded are manipulated between the wheels.
Seam Welding Wheels
Available Sizes
Up to 460 mm. wheels/discs in semi-finished or finished forms according to drawing.
Contact Shafts & Housings
Alloys Required
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CuCoNiBe
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CuCrZr
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CuCoBe
(according to the disc required)
Available Sizes
Finished forms according to drawing.
Spot Welding Electrodes
Resistance spot welding is a process in which contacting metal surface points are joined by the heat obtained from resistance to electric current. It is a subset of electric resistance welding.
Work-pieces are held together under pressure exerted by electrodes. The process uses two shaped copper alloy electrodes to concentrate welding current into a small "spot" and to simultaneously clamp the sheets together. Forcing a large current through the spot will melt the metal and form the weld. The attractive feature of spot welding is that a lot of energy can be delivered to the spot in a very short time.
Alloys Required
-
CuNiSiCr
-
CuCoNiBe
-
CuBe2
-
CuCrZr
Available Sizes
Finished forms according to drawing.
Mesh Welding (Cross Wire)
Butt Welding Electrodes - Parts - Blocks
Cross Wire Welding Is a process for joining bars or wires in cross joints by directly applying opposing forces with usually flat electrodes. The current and the heat generation are localized at the contact points of the crossed bars or wires. Cross wire welding is widely used in construction and electrical industry as well as for manufacturing of metal wire nets and shopping trolleys etc.
Butt welding is a precess where two pieces of metal to be joined are in the same plane. These types of welds require only some kind of preparation and are used with thin sheet metals that can be welded with a single pass.
Alloys Required
-
CuNiSiCr
-
CuCoNiBe
-
CuBe2
-
CuCrZr
Available Sizes
Finished forms according to drawing.
Aluminium Bronze Applications
Aluminium bronze is a type of bronze in which aluminium is the main alloying metal added to copper, Aluminium bronzes are most valued for their higher strength and corrosion resistance as compared to other bronze alloys. These alloys are tarnish-resistant and show low rates of corrosion in atmospheric conditions, low oxidation rates at high temperatures, and low reactivity with sulfurous compounds and other exhaust products of combustion. They are resistance to corrosion results from the aluminium in the alloys, which reacts with atmospheric oxygen to form a thin, tough surface layer of alumina (aluminium oxide) which acts as a barrier to corrosion of the copper-rich alloy.
Alloys Required
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CuAl10F3Mn
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CuAl10Ni5Fe4
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CuAl14Fe4Mn2
Available Sizes
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Wear and guide plates
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Aircraft landing gear bearings
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Wiper dies and mandrels
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Bearing and bushings
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Valve seat and guides
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Gibs and slides
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Worm wheels and gears
Copper Nickel Applications
Copper Nickel is an alloy of copper that contains nickel and strengthening elements, such as iron and manganese. It is highly resistant to corrosion by salt water, and used for piping, heat exchangers and condensers in seawater systems, as well as for marine hardware. It is also used for the propellers, propeller shafts, and hulls of high-quality boats. Other uses include military equipment and chemical, petrochemical, and electrical industries.
Alloys Required
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CuNi10FeMn
-
CuNi30Mn1Fe
Available Sizes
-
Propeller sleeves
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Flanges
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Sleeves
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Condensers
-
Flanges
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Heat exchange components
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Process equipment making