Oxygen-free Copper Busbar And Copper Bar With High Conductivity

Oxygen-free Copper Busbar And Copper Bar 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: If I fill a plastic tube with copper powder, what difference in conductivity will it be with a solid metal wire of same diameter.: Copper powder will be less conductive than wire. Copper wire is produced by drawing single ingots of copper into long strands, so there is very little other than atomic scale defects, to disrupt the conduction of electrons. Copper powder, unless you produce the powder and fill it into the tube (and seal it) in a high vacuum or inert atmosphere, will have a thin layer of copper oxide around each particle which will reduce the conductivity. And unless you compress the powder, you have to consider the size and shape of the particles; spherical particles will have very small amounts of surface actually in contact with nearby particles. To have about the same conductivity as wire, you'd have to compress and heat (sinter) it in a reducing atmosphere, but then it's not powder anymore, it's just a wire produced through powder metallurgy instead of drawing.

Q: I asked this question as part of a two-parter, but no one responded to this part, so I'm posting it alone.I found a page online that said to use a paste of salt and lemon juice to polish copper and then wash it off right away with soap and water, so I polished a copper bracelet this way. However, large areas of the bracelet turned a white/rainbowish color, and I need to know WHY. Did I do something wrong? I thought oxidation was always black or green. Is that not true?Please do not just post your own copper polishing methods, unless it is accompanied by the reason why I now have a piece of metal which is now part both copper and whitish/rainbowish, since THAT is what I want to know. Thanks!: I rather have an identical difficulty,I used to apply point 40 bleach. yet i recently switched because of the fact is somewhat time ingesting and undesirable on your hair. I switched to Revlon colour silk alluring colour-05-extremely mild ash blond. yet I go away it on for 60 minutes somewhat of 25. yet i could recommend you utilize pink shampoo(that's made to get the brassy/copper tones out of hair) yet im unsure what that's reported as. that's slightly costly in spite of the undeniable fact that. Or bleach it with point 40 bleach. It labored for me.

Q: I've been feeling weak in health my whole life, and recently purchased copper supplements. The results are amazing, I feel like I'm &quot;growing&quot;, waking up energized (instead of feeling dead), my memory and concentration is stagnant, and I no longer have numbness in my muscles. So whats the problem you ask? Well I'll tell you: I'm wondering how I could be suffering from a copper deficiency if copper is a common mineral in food. How come its easily absorbed in tablet form and not in the food I eat.: Coper okorder

Q: What are the tips for the selection of copper tubes for air conditioning?: With tips for choosing air conditioning, air conditioning: 1 brass brass compression capacity: take the special air conditioning copper Daikin are R410a refrigerant system, so the choice of air conditioning copper must withstand high pressure, recommend the use of special brass here 410 daikin. 410 air conditioning copper tube is a product specially produced for R410a refrigerants, which can meet the requirements of high pressure, Gao Jie cleanliness and so on in R410a refrigerant system.

Q: every were you look up how to make a still they always say to use copper but is it reely needed or can u use difrent metal: I have to assume that you are using hard copper and not soft copper. You might try heating it with a propane torch to help soften it up a bit. Again I have to assume that the tubing has nothing in it. They do make what is known as a bending spring which slide over the tubing and helps support the walls to keep from kinking. You might also try the bending tool that electricians use to bend conduit.. If the bend does not have to be to sharp should not be to much trouble. If you are using soft copper, should be no problem as it comes in a coil, and it might be better to use the soft copper if this is a new water line or an add on.

Q: What is the main cause of the sticking of the inner wall of the condenser copper tube? How to deal with it?: This advertisement place is comprehensive preferential investment! Welcome to advertise! Answer: there are two kinds of attachments in the condenser copper pipe, one is organic attachment, and two is inorganic attachment. Organic produce attachment is due to cooling water containing algae and bacteria, they often clings to the walls of the tube in the clean copper pipe, and at the appropriate temperature (10oC-30oC), absorbing nutrients from the cooling water, the continuous growth and reproduction. Organic attachment often and some clay, animal and plant debris, as well as some peat particles mixed together.

Q: I came across some [maybe] copper printings of 1880s San Francisco. I'm wondering who made them, how, why, and what they might be worth.Help?: Copper printings? Do you mean a copper etching? Is the image etched into the copper? Look for a signature or initials. That will determine who made them and if they're worth anything.

Q: Please draw the long and short version of the electron configuration of Copper. Draw the Lewis Electron dot diagram for copper (Cu). Explain what copper does that does not follow the Aufbrau principal and why it does it.: Yes, Catholics follow Bible PRINCIPLES

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