Locks and keys: understand and choose home locks

Many homes rely on external residential door locks as their primary home security system. Whether you are replacing a single lock or renovating a home, it’s important to understand the options when choosing the right access control. Access using the key is the most common external door lock. Key input functions are often used with […]


Potassium-sodium alloy

[chemical structure] 4K-Na [chemical characteristics] Silver soft solid or liquid. Reacts violently with acid, carbon dioxide, moisture and water, releases hydrogen, spontaneously ignites, and sometimes even explodes. Density: 0.847 g/ml (100 °C) (K78%, Na22%); 0.886克/毫升 (100 ° C) (K56%, Na44%) Melting point: -11 ° C (K78%, Na22%); 19 ° C (K56%, Na44%); [limit parameters] Boiling […]


Magnetic alloy

In the applied magnetic field, the material can exhibit three kinds of conditions: 1 is not attracted by the magnetic field, called diamagnetic material; 2 is weakly attracted by the magnetic field, called paramagnetic material; 3 is strongly attracted by the magnetic field, said iron Magnetic materials, whose magnetic properties increase sharply with the strengthening […]


Titanium alloy

Titanium is a Class IVB element of the periodic table. It looks like steel and has a melting point of 1,672 °C. It is a refractory metal. Titanium is abundant in the earth’s crust, much higher than common metals such as Cu, Zn, Sn and Pb. China’s titanium resources are extremely rich. In the large-scale […]


Heat resistant alloy

Heat resistant alloy alloys, also known as high temperature alloys, are of great significance for the industrial sector and application technology under high temperature conditions. In general, the higher the melting point of a metal material, the higher the temperature limit at which it can be used. This is because as the temperature increases, the […]


Corrosion resistant alloy

The ability of metallic materials to resist media erosion in corrosive media is called corrosion resistance of metals. High corrosion resistance in pure metals usually has one of the following three conditions: 1 Highly thermodynamically stable metal. It can usually be judged by its standard electrode potential, and its value is more stable than the […]


Special alloy

There are thousands of alloys used in industry, and only a few of them are briefly introduced. 1.Corrosion resistant alloy 2.Heat resistant alloy 3.Titanium alloy 4.Magnetic alloy 5.Potassium-sodium alloy


Lead-tin alloy

Lead-tin alloys are classified according to their use: 1 lead-based or tin-based bearing alloy. Alloys with lead-based bearings are collectively referred to as babbitt alloys. Containing 3% to 15%, copper 3% to 10%, and some alloys also contain 10% lead. Tantalum and copper are used to increase the strength and hardness of the alloy. The […]



Zinc-aluminum die-casting is a kind of die-casting part with zinc as the main component. The surface of this part has a very dense surface layer, inside which is an evacuated porous structure and a lively amphoteric metal. Therefore, only by adopting appropriate pre-treatment methods and electroplating processes can the coating layer on the zinc alloy […]


Zinc-based alloys entered the era of “microcrystalline alloys”Ⅲ

Zinc-based microcrystalline alloy can meet the special requirements of single-item performance. It is an important mark different from traditional ordinary anti-friction alloy. It realizes the customized production of anti-friction materials for equipment manufacturing industry, and meets the individualized demand of equipment manufacturing. The high efficiency, high precision, high reliability and low cost of equipment manufacturing […]