Annealing, quenching and heat treatment of zinc from the supplier Evek GmbH
Are you interested in annealing, quenching and heat treatment of zinc? Supplier Evek GmbH offers to buy zinc, which meets all the requirements of GOST 3640−94, in any quantity at an affordable price in a wide range. We will ensure the delivery of products to any point of the continent. The price is optimal.
During annealing, the initial cast zinc is heated to a certain temperature, held and then slowly cooled. As a result, the metal has a more equiaxial structure, which increases its chemical homogeneity. In order to equalize the chemical composition of the initial castings, homogenizing annealing is used. After such heat treatment, the intradendritic liquation of the alloys is minimized.
Homogenization requires heating to a temperature of 320… 340 ° C. The processing time is determined by the grade of the alloy and the casting size. It is usually 6 to 8 hours. After the homogenization is completed, the castings are cooled slowly together with the furnace. In order to restore the ductility of the zinc alloys that have been liquefied as a result of cold deformation, softening annealing is performed. It is performed at a lower temperature, which should not exceed 180… 200 ° С, with the duration of the operation about 2… 3 hours. Supplier Evek GmbH offers to buy blanks and semi-finished products from zinc alloys. at an affordable price in a wide range. We will ensure the delivery of products to any point of the continent. The price is optimal.
Final heat treatment of zinc parts
Such operations are hardening and aging. For zinc alloys quenching consists in a purposeful change in phase solubility, which occurs during the heating of products to certain temperatures. Further, the hardened alloy undergoes natural or artificial aging, in which the finely dispersed β phase is separated from the main α-phase as an intermetallic compound. As a consequence, the alloy increases its mechanical characteristics.
Duration of heat treatment
The duration of aging of the alloy at a given heating temperature for quenching is chosen so that after the quenching all the processes of dissolving excess phases in the metal structure are completely passed. With an increase in the degree of dispersion of the excess phases, their dissolution occurs more rapidly. For dispersion hardening of zinc alloys, they are heated to temperatures of at least 360 ° C for 5… 8 hours, and then the blanks are cooled in water.
For supersaturated zinc alloy, natural or artificial aging is further produced. Some zinc alloys (in particular, with aluminum and copper) have the property of spontaneous aging. This should be taken into account when developing the dimensions of finished products, because as a result of this aging, the linear dimensions and properties of zinc casts change.
Buy. Supplier, price
Are you interested in annealing, quenching and heat treatment of zinc? Supplier Evek GmbH offers to buy zinc, which meets all the requirements of GOST 3640−94, in any quantity at the manufacturer’s price. We will ensure the delivery of products to any point of the continent. The price is optimal. We invite you to partner cooperation.