Annealing, quenching and heat treatment of brass
Buy billets and semi-finished products of various grades of brass at factory price offered by the company Electrocentury-steel. The supplier ensures prompt delivery of goods to the point specified by the user.
Types of heat treatment of brass are determined by the percentage of zinc in the alloy, and a view of the state diagram, what type of brass alloy belongs to a single-phase or two-phase.
Heat treatment of single-phase (ordinary) brass
For such varieties, or use conventional recrystallization annealing. The goal is to remove internal stresses that may appear in the process of plastic deformation of the material. The annealing conditions depends on the concentration of zinc in the alloy with the increase of this parameter the required annealing temperature is reduced, but not more than 3000 C. the Effectiveness of annealing depends on the final size of grains in the microstructure. They are installed on the testimony metalinstrumentals microscope, or by reference to the structures given in GOST 5362.
It is not recommended to perform annealing in a normal atmosphere containing significant amounts of oxygen. This leads to uneven reduction of grain size, and on the surface of the alloy clearly distinguished spots of oxides which must be removed by etching the alloy in a solution of phosphoric acid or potassium dvuhromovokislyj. A more efficient method of heat treatment is a vacuum annealing or annealing in a protective atmosphere of inert gases. At the same time is reduced and zinc burn-off.
To buy rolling, forging and castings, various brass alloys at manufacturer’s prices, the company offers Electrocentury-steel. The supplier ensures prompt delivery of goods to the point specified by the client.
Heat treatment of two-phase brass
Multiphase brass obtained by adding others in addition to zinc, the alloying elements iron, aluminum, lead, etc.
Each of the brands this brass has its temperature of recrystallization annealing. The most commonly used modes are as follows:
- Annealing after cold rolling is used for stress relieving, is carried out at 300…3200 C;
- Annealing to reduce the risk of stress corrosion cracking after hot rolling. Is carried out at 260…2800 C;
- Annealing to prevent the burnout of zinc. Optimum temperature range is 450 to 7000 C;
- Recrystallization annealing at 450…4700 C.
The company Electrocentury-steel offers to buy the rental, forgings and castings of various grades of brass at affordable prices manufacturer. Supplier guarantees delivery of rental within the time defined by the user.