Q:What is the sign of PD? What are the signs of other precious metals?

Palladium (Pd), one of the platinum group metals, is also one of the precious metals commonly used in jewelry making. It belongs to platinum group metals with platinum (Pt), and has a high reflectivity to visible light. Therefore, it appears white and has a similar appearance and color:Platinum --- tin white palladium --- steel white

Q:Ordinary AB glue, can stick metallic objects?

AB is a nickname for the two liquid mixed hardening glue, the glue is a liquid, a liquid hardener, two feed to hardening, is not required by the temperature should be hard ripening, so it is a kind of adhesive curing at room temperature, the model is sometimes used to do. Generally used in industry.

Q:What are light metals and what are heavy metals?

The element classification, some of them belong to the rare earth metal, some classified refractory metals, eventually in the industry really into heavy metals into 10 kinds of metal elements: copper, lead, zinc, tin, nickel, cobalt, antimony, mercury, cadmium and bismuth. These 10 kinds of heavy metals in general and with metal density greater than 4.5 outside, no other heavy metals in common. Each of the properties of various heavy metals.

Q:How to extract noble metals from waste electronic products

The extraction from the waste electronic products in the precious metal technology is an important precious metal recycling technology, basic principle is the use of metallurgical furnace heating stripping non metal material, metal material or other metal smelting melting in molten salt, then separation. Non-metallic materials, mainly printed circuit board materials, etc., are generally dross removal, and precious metals and other metal substances in alloy form after the outflow of refined or electrolytic treatment. The main process methods are combustion melting process, high temperature oxidation smelting process, scum technology, arc furnace sintering process and so on.

Q:Will the metal ions in the layered composite metal oxides be replaced by other ions?

Are generally ionic compounds, namely active metal loses electrons form positively charged cations, and non metal electronic form negatively charged anions, cations and anions by electrostatic interaction to form ionic compounds.

Q:Are iron and steel nonferrous metals?

Iron, manganese and chromium are ferrous metals, and other metals are nonferrous metals.More importantly, both non-ferrous metals and ferrous metals are within the limits of purity. Steel is an alloy of carbon and iron, a mixture, an alloy, and not a metal.What we commonly call iron and steel is steel. It is not a non-ferrous metal.

Q:What kind of metal is the ordinary key made of?

There are many kinds of keys, such as ordinary key, intelligent key, remote control key, electronic key and so on.It is said that Luban was the first man to lock the office up.

Q:The characteristics of metal mesh curtains and the manufacturing process of metal mesh curtains

Metal screen painting: the advantages of the use of fine spraying, surface coating rapid prototyping, improve production speed. Defects (surface color) and net curtain adhesion is poor, easy to fade, in tensile test can be proved

Q:Are there any metals that do not conduct electricity?

Metals are generally conductive; common metals are free of electrical conductivity.

Q:What metal is black?

The name "ferrous metals" and "nonferrous metals" is often misunderstood. Black metals must be black, but they are not. There are only three ferrous metals: iron, manganese and chromium. And neither of them three is black! Pure iron is silvery white; manganese is silvery white; chromium is grey. Because the surface is often rusty iron, a mixture of magnetite and brown covered with a layer of black ferric oxide, is looked black. So people call it "black metal"". Often referred to as "black metallurgical industry", mainly refers to the iron and steel industry. Because the most common alloy steel is a steel and chromium steel, so, people manganese and chromium can be considered as a "black metal".