Q:Silver and aluminum wire how to identify? There are several options?

Find a similar size copper or iron wire, copper wire or wire weigh, than the weight (or similar) is rather than silver, copper and iron wire is a lot of light aluminum wire. Advantages do not hurt the material.

Q:A year ago by a ten cm long metal wire, does much harm to the people?

Aluminum decomposes easily! Aluminum (A1) is one of the most abundant metals on earth. It is widely distributed. In nature, most of them exist in the form of complex aluminum salts, which account for about 8% of the total crust, second only to oxygen and silicon, and occupy the third place. It is not surprising, therefore, that aluminum is commonly found in drinking water sources due to physical geography. Rock erosion, soil leakage, dust deposition and rainfall, industrial wastewater is an important way for aluminum to enter the water body. The content of aluminium in different water bodies is different. Acidic water contains more aluminum (acid rain, industrial wastewater). Drinking water in the process, the commonly used aluminum salt coagulant, the content of aluminum salt treated aluminum in water is higher than that of untreated water, the content of aluminum in drinking water is usually very low, no more than a maximum of 0.2mg/L (refer to: water, water treatment process are in line with the standard of drinking water), if 2 litres per person per day, the uptake of aluminum from drinking water for 0.4mg/ days, and adult daily food intake from the aluminum content is about 5mg-20mg, a small part of it from the water intake of aluminum for human intake of aluminum content, and when the content of public concern caused by Alzheimer disease and drinking water aluminum, it will make people feel surprised.

Q:The bottom of the cooker is leaking. How can it be repaired?

The bottom pad a piece of iron or hard objects, and then gently hammer with a small hammer, and then turn over, both sides beat each other, until completely riveted, it is best to use sandpaper can be polished.

Q:While wearing a mask, a halitus how to not let the glasses?

But the effect is the same), when put up with the right thumb and forefinger gently pinch, bending aluminum wire naturally and paste on both sides of the nose, with the face is flat, breathe when gas could not run up, then a frame at the top, to call an insurance..

Q:The difference between traditional resistance welding and aluminum wire welding

Mainly used for welding large modules,Resistance welding is the use of current through the base material, because the parent material resistance and heat generated by welding methodsMainly used for higher precision, more stringent appearance of the workpiece,

Q:This cable, which is copper wire, or aluminum wire, thank you all

Look at the price, if it is of good quality, it will use copper wire or even silver plated wire

Q:Welding problem: the problem of welding aluminum wire with lead

Should solder it with solder? Lead poisoning! In addition, the welding is not tight, and solder (solder paste) is also concerned, and its role is to clean the joints, to ensure the quality of brazing, please change the solder try.

Q:Detailed flow of LED packaging?

Crystal enlargement. An expander is used to extend the entire LED wafer film provided by the vendor, so that the LED grains closely arranged on the surface of the film are pulled apart so as to facilitate the puncture.

Q:How can I adjust the steel bar? Do you have any tips?

Straightening steel bar, you can use a special straightening machine.

Q:LV how to solder, seek expert advice, please everybody

First of all, strongly recommend the purchase of a dedicated aluminum wire feed tool, a kit will contain the following items:1. non metallic lined tubes - designed to minimize wire feed friction2. U grooved drive roller - used to prevent breakage or deformation of soft aluminum wire. These drive rollers don't scratch aluminum wires like V groove rollers. The use of V groove roller, will make the wire scraping lining pipe plug, causing wire feed failure.3. inlet and outlet guide device - designed to avoid wire scratches.4. contact contacts - use a larger diameter opening in the welding head of aluminum material, because the expansion of the aluminum wire is more expansive than that of the steel. Therefore, the size of the contact head for aluminum wire is small enough to maintain electrical contact and sufficient to allow expansion.