Oxygen-free Copper Busbar With High Conductivity

Oxygen-free Copper Busbar With High Conductivity

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Loading Port:: Shanghai

Payment Terms:: TT OR LC

Min Order Qty:: 500 kg

Supply Capability:: 10000 kg/month

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Type	Cu%(WT)	W%(WT)	RWMA	Density	E-conductivity(Min)		heat conduction	thermal expensivity
Class	(Min)	Hardness	((W/mK))
		(Min)
CuW55	45±2	Balance	10	12.30g/cm3	49%IACS	125HB	~260	~11.7(10-6/K)
CuW60	40±2	Balance		12.75g/cm3	47%IACS	140HB
CuW65	35±2	Balance		3.30g/cm3	44%IACS	155HB
CuW70	30±2	Balance		13.80g/cm3	42%IACS	175HB	~240	~9.7(10-6/K)
CuW75	25±2	Balance	11	14.50g/cm3	38%IACS	195HB	200~230	9.0~9.5 (10-6/K)
CuW80	20±2	Balance	12	15.15g/cm3	34%IACS	220HB	190~210	8.0~8.5 (10-6/K)
CuW85	15±2	Balance		15.90g/cm3	30%IACS	240HB	180~200	7.0~7.5(10-6/K)

Production Equipment

750-1500kg main frequency induction copper melting furnace, 80MN water seal extruder, LG60 high speed two-roll cold pilger mill, straight-line wire-drawing machine, copper tube/pipe straightener, polisher, 84′ copper coil winding machine, straightening-cutting & pancake coiling machine, thermoplastic packaging machine, 1.2T continuous bright annealing furnace.

80MN extruder

Continuous bright annealing furnace

Testing Devices

spectrum analyzer, atomic absorption analyzer, spectrophotometry, analytical balances, metallurgical microscope, eddy current flaw detector, metal tensile testing machine, eddy conductivity instrument.

Hardness tester

Spectrum analyzer

Metallurgical microscope

Metal tensile testing machine

Atomic absorption analyzer

Process

refined copper — smelting & casting — extrusion — rolling — drawing — straightening-cutting/forming of pancake coil — bright annealing — packaging — finished goods.

Standards

GB/T 1527-2006     Drawn tube of copper and copper alloys
GB/T 16866-2006   Dimensions and tolerances of copper and copper alloy seamless tubes
GB/T 4423-2007     Copper and copper-alloy cold-drawn rod and bar
GB/T 5231-2001    Wrought copper and copper alloys chemical composition limits and forms of wrought products
GB/T 5585.1-2005   Copper or aluminium and its alloy bus bars for electrical purposes—Part 1:Copper andcopper alloy bus bars
GB/T 17791-2007   Seamless copper tube for air conditioner and refrigeration equipment
GB/T 19850-2005   The seamless round copper tubes for electrical purposes
GB/T 26024-2010   Seamless copper and copper alloys tube for valves on air-conditioning and refrigeration system
ASTM B280-2008   Standard Specification for Seamless Copper Tube for Air Conditioning and Refrigeration Field Service
EN 12735-1：2001 Copper and copper alloys Seamless,round copper tubes for air-conditioning and refrigeration Part 1:Tubes for piping systems
EN 12735-2：2001 Copper and copper alloy – seamless round copper tube/pipe for air-conditioning and refrigeration system – for equipment
JIS H3300-2009       Seamless copper and copper alloy tube/pipe

Q:I have read online, after the fact, that acid core solder should NOT be used when sweating copper pipe. When I bought this at the hardware store I was told it was okay. Now I am questioning it. What will happen? Will it corrode over time or is it a health hazzard for drinking water?: Resin flux must be used for electrical work. Acid flux is correct for copper water piping. . It is handy to have flux in the core. Lead free solder is required by local building codes.

Q:A-level physics tomorrow. Please help me with this question(s): Copper is extracted from its ore, copper pyrite. The ore is roasted in a limited supply of oxygen. The following equations describe the process: 1. 2CuFeS2 (s) + 4O2 (g) ---&gt; CuS2 (s) + 3SO2 (g) + 2FeO (s) 2. Cu2S (s) + O2 (g) ---&gt; 2Cu (s) + SO2 (g) a. (i) Calculate the number of moles of CuFeS2 in 200g. (ii) In the experiment 88g of Cu2S is produced from 200g of copper pyrite as per equation 1. Calculate the mass of Cu produced from 200g of copper pyrite. (iii) Calculate the percentage of Cu in copper pyrite. Please help me with these questions. Question (i) I can do, but don't know how to do the rest. Thank you!: Copper is extracted from its ore, copper pyrite. The ore is roasted in a limited supply of oxygen. The following equations describe the process: Since the amount of oxygen is limited, we need to determine the amount of oxygen which was needed for the second reaction. 2. Cu2S (s) + O2 (g) ---> 2Cu (s) + SO2 (g) The coefficients in the balanced equation determine the ratio of moles of reactants and moles of products. 1 mole of Cu2S reacts with 1 mole of O2 to produce 2 moles of Cu and 1 mole of SO2. Let’s determine the number of moles of Cu2S. For Cu2S, mass of 1 mole = 63.5 + 2 * 32.1 = 127.7 g; Moles of CuS2 = 88/127.7 Ratio of moles of O2 to moles of Cu2S = 2 : 1 Number of moles of O2 = 2 * 88/127.7 = 176/127.7 Ratio of moles of Cu to Cu2S = 1 : 2 Number of moles of Cu = ? * 88/127.7 = 44/127.7 We need 44/127.7 moles of Cu from the first reaction! Ratio of moles of SO2 to Cu2S = 1 : 1 Number of moles of SO2 = 88/127.7 We need 88/127.7 moles of SO2 from the first reaction! Let’s determine the number of moles of O2 in the SO2 1 mole of SO2 contains 2 moles of O2 Number of moles of O2 = 2 * 88/127.7 = 176/127.7 Total number of moles O2 needed for the second reaction = 176/127.7 + 176/127.7 = 352/127.6 I am still working!

Q:If the resistivity of #12 copper wire (diameter of 80.81 miles) is 10.4 ohms-cm/ft), what is the resistivity of the #18 gaauge copper wire (diameter of 40.30 miles)?: There is something wrong with the question. Resistivity is measured in ohm-cm (or ohm-m), not ohm-cm/ft. It is an intrinsic property of the copper and does not depend upon the diameter or length of the wire. The resistivity of copper at 20°C is: rho = 1.72x10^(-8) ohm-m, or 1.72x10^(-6) ohm-cm. It is the same for #12 and #18 copper wire. The resistance R (not resistivity rho) of a wire varies according to the formula: R = rho x L / A ----- (Equation 1) where rho = resistivity (ohm-cm) L = length of wire (cm) A = cross sectional area of wire (cm^2) R = resistance (ohm) The diameters of the two wires are: D12 = 80.81 mils = 0.08081 inch D18 = 40.30 mils = 0.04030 inch where mil is 1/1000 inch or 0.001 inch The resistance of the #18 wire can be calculated relative to the #12 wire as follows: Use Equation 1 twice: R18 = rho x L / A18 --- Eqn 2 R12 = rho x L / A12 --- Eqn 3 Divide Eqn 2 by Eqn 3, sustitute in D, and solve: R18/R12 = A12/A18 = (pi x D12)^2 / (pi x D18)^2 = (D12/D18)^12 R18/R12 = (80.81mil / 40.30mil)^2 = 4.021 or R18 = 4.021 x R12 The #18 wire will have a resistance that is 4.021 times greater than the #12 wire. I hope that helps. The problem needs to be clarified.

Q:I have car with a fuel tank that has a plastic baffle, with a rubber hose connected to it (pickup line), which connects to the pump. This rubber line tends to get limp, and collapses over time, resulting in a blown fuel pump. I had wanted to replace it with a copper line. The copper line needs to be 1/4 inch in width. Was wondering if the copper will corrode within the tank, sending crud further down the system, thus resulting in downstream issues with the fuel system.: I've been surfing the internet more than 3 hours today seeking the answer to the same question, and I haven't found a more interesting debate like this. It's pretty worth enough for me.

Q:I‘ve done a lot of electrical work around my house, but I‘ve never done any plumbing before. The guy at Home Depot told me that I need to heat the fitting, but not the pipe itself. He also said that valves (the new ballcock type) are easily destroyed by overheating. How do I know when the pipe and fitting is ready to accept the solder? How do I avoid damaging the valve? How do I know how strong to turn up the flame on the propane torch?: You have already received some great advice for soldering copper so I wont get into that. But, personally I use pex material. Specifically Wirsbo by Uponor. This material can be expanded to several times its diameter without bursting. These fittings are done with an expansion tool and a right that slides on the end or the length of tubing you are fitting. Slid the ring on, use the expanding tool to expand the pipe, fit it over the barb end of the fitting hold it for a minute and then done. Very easy. The pipe and the fittings are comparable to other manufacturers but the tool is a small investment. Other manufacturers have compression fittings that work great too, and the cost may be a little less than the Wirsbo. Just another option that can reduce the amount of soldering and also the amount of fittings that you may need with copper. When going up to a kitchen sink or connecting some baseboard radiation, using copper, you may need some 90s and some 45s to get there. With pex material you just slide the pipe up, connect the fitting and done. Just remember there are 2 different types of pex. If you are using it for a heating system you must get one with an O2 barrier. If it is for domestic water, you must get pipe that has been sterilized. It will say for potable water on the pipe itself. Good Luck

Q:You are given a solid UNKNOWN, containing copper, weighing........ 1.6595 g. You dissolve this in concentrated Nitric Acid, HNO3, transfer quantitatively to a 100 mL volumetric flask, add the required amount of Ammonia, NH3, dilute to volume and mix thoroughly.This resulting solution is too concentrated and the resulting %T measured in the same cuvet and spectrometer as before gave little or no transmission (&lt;10%).You are told to pipet.................... 12.00 mL into a 100 mL volumetric flask, add the required amount of ammonia, dilute to volume and mix.Spectroscopic measurement of this solution gave %T... 38.5 %CALCULATE:The Percent of copper in the original solid UNKNOWN..._________%Cu: Copper Analysis By Spectroscopy

Q:opposed to using copper pipes: I'm a fan of PexSupply as a distributer; they sell the leading brand of potable water PEX tubing, AquaPEX. Read about Wirsbo's AquaPex at the link below:

Q:I‘ve noticed that if the pipe bends at all coupling, it leaks. Now, I can force the pipe to stay straight and that‘s not a problem. My concern is, does this mean that the coupling is not fitted properly, or do they just do this if the pipe is not straight at the joint? I just want to be sure that when it get cold outside again that it‘s not going to start leaking in the middle of the night.: Sounds like your emissions sensor is sending a bad signal this could make the care send an inappropriate combination of gas and air into the engine causing it to burn incorrectly this could be your problem.

Q:How to weld the interface between copper pipe and iron pipe: If you lower the temperature, you can easily get a beehive. What shall I do? In fact, we change a way of thinking on the line, I do: first the need for welding pipe with sandpaper clean, and then use the stick phosphorus brazing of Borax in place from the mouth of 1cm thin welding lap, attention must not leak welding. The high places of work. With a file, with sandpaper polished and clean the welding flux; the brass pipe of course is not easy to go into the tube, and this can be used to expand the reamer copper tube, the iron pipe into the tube; now we can be like a kind of welding brass with silver brazing welding the interface of copper and iron, as iron had been welded on the copper interface, the roasting temperature, we will find the welding wasn't difficult at all.

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