Tech News
How are custom CNC machining and forging interrelated?
Views: 1578 May 08 , 2017
Forging is a manufacturing process during which presses, hammers, and dies are used to force metals into various shapes. Forging can be done at room temperature (cold forging) or metal temperatures of over 1000 degrees...
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LME announces fee schedule and latest clearing members for LMEpr
Views: 1306 Apr 28 , 2017
The London Metal Exchange (LME) and LME Clear are pleased to announce a competitive fee schedule for their precious metals contracts, with nine LME clearing members having already expressed their inteThe London Metal Exchange (LME) and...
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Precision Engineering and Custom CNC Machining Thoughts
Views: 1432 May 08 , 2017
If you want to know about micromachining, you must first realize that the process does not have just one name. Some call it microfinishing, while others refer to it as superfinishing. And even though it differs from honing, some call it...
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How to Solder Brass Plumbing Fittings
Views: 1428 May 24 , 2017
As an alloy of copper and zinc, brass is compatible with copper, and manufacturers produce many common plumbing fittings with the material. Solder adheres as well to brass as it does to copper, so the fittings are usually molded with...
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Steel and copper and copper alloy welding What is the cause of the crack?
Views: 1497 Jun 25 , 2017
One is the effect of high thermal conductivity. Copper thermal conductivity than carbon steel 7 to 11 times, when the use of technical parameters and welding with the same thickness of carbon steel, the copper is difficult to melt, filled...
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What is the difference between the H and HR of the copper alloy?
Views: 1158 Jun 24 , 2017
Cold working condition (H)
Copper and copper alloy cold processing is usually used cold-rolled and cold-drawn, individual cold forging and cold bending and other cold processing technology. After cold processing, some also need heat...
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What is the difference between the use of calendered copper foil and electrolytic copper foil?
Views: 1384 Jun 24 , 2017
(1) calendering copper foil quality and use: that the rolling copper foil by extrusion method to obtain copper foil, which is characterized by: good bending resistance, but the conductivity is weaker than the electrolytic copper, mainly...
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What are the problems with tin brass electrode when welding?
Views: 1156 Jun 24 , 2017
1. Copper thermal expansion coefficient, solidification occurs when the larger shrinkage stress, resulting in cracks and deformation, so the assembly gap should be wide, groove angle should be large, but also the use of multi-point...
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What are the copper weight calculation methods?
Views: 1287 Jun 24 , 2017
Calculation method of copper weight
Copper rod W = 0.00698 × square of diameter
Brass rod W = 0.00668 × square of diameter
Square copper rod W = 0.0089 × square width of the square
Square brass rod W = 0.0085 ×...
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What is the main structure of copper thermal resistance?
Views: 1245 Jun 24 , 2017
What is the main structure of copper thermal resistance? To make clear the "copper thermal resistance main structure", we must first understand what copper heat resistance. The so-called copper thermal resistance refers to the temperature...
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What is the characteristics of imitation copper handicraft production method?
Views: 1172 Jun 24 , 2017
1, easy to draw, available on the market commonly used materials;
2, imitation copper layer formed by brushing, so the operation is simple, easy to grasp, not affected by the ambient temperature can be operated;
3, imitation...
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What is the copper soft connection production process?
Views: 1177 Jun 24 , 2017
1, the process (specifications, models according to the user requirements) standard material → cutting piece→cleaning →acid cleaning →welding →moving burrs →drilling → surface polishing→ Sn plating→packing...
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What is the four elements of the copper welding process?
Views: 1555 Jun 24 , 2017
Copper and copper alloy can be brazing, resistance welding and other methods to achieve the connection, industrial development today, welding has occupied a dominant position. Welding and welding of copper and copper alloy are easy to be...
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What are the copper welding materials?
Views: 1176 Jun 24 , 2017
1. Welding argon purity ≥99.99%, dew point ≤ -50 ℃, and should meet the GB / T4842 or GB10624 requirements. When the bottled argon pressure ≤ 0.5Mpa should not be used. 70% Ar + 30% N2 mixed gas can be used when the preheating is...
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What are the advantages of copper forging?
Views: 1405 Jun 24 , 2017
Forging Advantages: For forged out parts, the product size is very high in size, so it is more conducive to batch production operations. Through the die forging, extrusion, stamping and other mold production to form the product size...
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What are the characteristics of copper forging?
Views: 1358 Jun 24 , 2017
What is copper forged? What is the characteristics of copper forging? What is the use of copper forging? Purple copper forging Definition: Copper processing method A means that the use of forging machinery on the copper billet pressure to...
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The four welding methods of copper
Views: 1549 Jun 25 , 2017
Copper color was purple, so called copper. In the humid air copper surface will produce a layer of basic copper carbonate, commonly known as copper (copper). Copper often contains a small amount of bismuth, lead, sulfur, oxygen,...
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What is the advantage of copper pipe?
Views: 1561 Jun 25 , 2017
Copper water pipe --- green treasures
When we have just set foot on the journey of life, when we are still in the innocent childhood, parents counsel always sounded in the ear: "tap water can not drink directly, otherwise it will get...
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What is the copper rod and copper wire production process?
Views: 1457 Jun 25 , 2017
Copper rods and copper production: before the 1970s, almost all of the copper is produced by batch production, the specific steps of the batch: the molten copper pouring and solidified into a "wire ingot" special cast pieces, and then...
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What is copper casting? What is the nature of copper TP2?
Views: 1545 Jun 25 , 2017
Melting the high-purity raw materials, the oxygen in the molten copper to produce oxygen with oxygen (P) deoxidation, so that the oxygen content reduced to 100ppm or less, thereby enhancing its ductility, corrosion resistance, thermal...
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