The main metal material of all-Copper Solder lamp is copper, and the price of copper is 4 ~ of iron ~ About 5 times, the price is very different, let's talk about it separately.
Iron, first of all, is cheap, and is obviously better than copper in terms of firmness and deformation resistance. Therefore, the middle part of the solder lamp and other stressed parts are made of iron.
Let's take a look at copper. The copper we encounter in our daily life is roughly divided into the following types: 1. Bronze: originally refers to copper-tin alloy, and later copper alloy except brass and white copper is called bronze, and often preceded the bronze name with the name of the first major addition element.
Tin bronze has good casting performance, antifriction performance and mechanical performance, and is suitable for manufacturing bearings, worm gears, gears, etc.
Lead bronze is a widely used bearing material for modern engines and grinding machines.
Aluminum bronze has high strength, good wear resistance and corrosion resistance, and is used for casting high-load gears, shaft sleeves, marine propellers, etc.
Beryllium bronze and phosphor bronze have high elastic limit and good conductivity, and are suitable for manufacturing precision springs and electrical contact elements. Beryllium bronze is also used to manufacture spark-free tools used in coal mines and oil depots. 2. Red copper: named for its purplish red color.
It is not necessarily pure copper, and sometimes a small amount of deoxidized elements or other elements are added to improve the material and properties, so it is also classified as copper alloy.
The conductivity and thermal conductivity of red copper are second only to silver, and are widely used in the production of conductive and thermal conductivity equipment.
Copper in the atmosphere, seawater and some non-oxidizing acids (Hydrochloric acid, dilute sulfuric acid), Alkali, salt solution and a variety of organic acids (Acetic acid, citric acid)
It has good corrosion resistance and is used in the chemical industry.
In addition, red copper has good weldability and can be processed into various semi-finished products and finished products through cold and thermoplastic processing.
In 1970s, the output of red copper exceeded the total output of other types of copper alloys. 3 ,. Brass, copper and zinc alloy.
The color changes from yellow red to light yellow with the increase of zinc content.
Brass has higher mechanical properties than pure copper and will not rust or corrode under normal circumstances;
It has good plasticity and is widely used in machinery manufacturing and the shaping of various structures (Such as decorations, furniture and lamps, etc). Code with H + number;
Indicates that H represents brass and numbers represent the mass fraction of copper.
For example, H62 indicates brass with copper content of 62% and zinc content of 38%, H65-
H50 brass is widely used in casting and lighting industry. Compared with lighting industry, H62 Brass is the best because it not only has good plasticity, but also has the advantages of corrosion resistance and easy color making.
H90 and H80 are single-phase and golden yellow, so they are commonly called Gold, called coatings, decorations, medals, etc.
H68 and H59 are biphasic brass and are widely used in structural parts of electrical appliances, such as bolts, nuts, washers, springs, etc.
In general, single-phase brass for cold Deformation Processing and dual-phase brass for hot deformation processing.