Annealing, quenching and heat treatment lead
Buy lead, the parameters of which correspond to the technical norms and requirements of GOST 3778−98, the company offers Electrocentury-steel. The sales are organized at affordable prices from the manufacturer. The supplier ensures prompt delivery of metal at the address specified by the consumer.
Features of heat treatment of lead and its alloys
Conventional thermal processing of lead, due to the low temperature of its melting is impossible. In particular, in order to clean lead got higher mechanical characteristics, the metal must be cooled to a temperature below -330 C. the Practical use of the received heat treating lead alloys, particularly those used in the manufacture of shells of high-current cables. Alloys are primarily used for these purposes contain lead and tin, however, in recent years actively spread the so-called triple alloys of lead with tin or antimony, and cadmium and tellurium.
The main type of heat treatment of such alloys is considered a natural aging, in which the hardness of the material increased to 60…70 MPa. With increasing duration of ageing alloys with these additives acquire additional hardness, however, such hardening spontaneously removed after 3…4 weeks.
Hardening is carried out for alloys of lead with antimony. The process consists in heating the alloy to a temperature of 55…600 C and subsequent slow cooling. Final hardness of these alloys reaches 100 MPa.
The company Electrocentury-steel offers to buy the lead at the affordable prices. Supplier ensures timely delivery to any destination specified by the customer.
Heat treatment with the purpose of improving corrosion resistance of lead alloys
This technology finds application in the manufacture of battery plates. In a constantly changing temperature and humidity conditions, the lead loses its thermodynamic stability. In order to avoid this negative phenomenon, perform heat treatment, which is as follows:
- The surface of the plates thoroughly washed and dried;
- After cleaning, the workpiece is subjected to heat treatment at temperatures of 150 to 2000 C;
- After 1…1.5 h the temperature was lowered to room temperature.
As a result of this heat treatment, anticorrosive surface properties of the battery plates is increased by 30…40%.
Buy lead at any range, which meets the requirements of GOST 3778−98, the company offers Electrocentury-steel. The metal is sold at producer prices. The provider ensures timely delivery of products to the address specified by the customer.