Production of nickel alloys
Melting
For melting, mostly use electric induction furnaces (low-frequency with an iron core and without a core and high-frequency), which ensure the forced melting and have the most favorable atmosphere over the melt with a small area of the metal surface, less often use electric arc furnaces. With small requirements in the liquid metal, the smelting can be done in conventional crucible furnaces with gas and oil heating.
Speciality of production
Feature of the production of nickel and its alloys is a high temperature of superheating before casting (up to 1700 ° C), and hence the increased tendency to oxidation, saturation with hydrogen during melting. In addition, nickel, unlike other common base metals, can also dissolve significant amounts of carbon and sulfur, which complicates the technology of melting, casting and requires compliance with strict rules of superheating, availability of protective equipment, careful deoxidation, degassing and other special technological measures.
Chromel and alumel
Casting of chromel and alumel is made after the results of thermo-electromotive force test of samples of previous melting. According to test results correct the content of manganese in alumel and chromium in chromel by additional additive or reduction of these elements in the charge. For stable indicators of the chemical composition, smelting is tried to be carried out quickly, at the same time, which is achieved by a careful selection of charge materials in terms of dimensions and failure-free operation of smelting units.
Percentage composition of alumel
| Ni+Co | Fe | C | Si | Mn | S | P | Co | Al | Cu | As | Pb | Mg | Sb | Bi | Impurities |
| 91.5 - 95.15 | ≤0.3 | ≤0.1 | 0.85 - 1.5 | 1.8 - 2.7 | ≤0.01 | ≤0.005 | 0.6 - 1.2 | 1.6 - 2.4 | ≤0.25 | ≤0.002 | ≤0.002 | ≤0.05 | ≤0.002 | ≤0.002 | ≤0.7 |
The supplier
The supplier Evek GmbH offers to buy nickel alloys at the best price in the given segment of rolled products. We offer nickel alloys from the specialized warehouses of Evek GmbH with delivery in any city.
Buy, bargain price
Supplier offers to buy nickel alloys., price - due to the technological features of production without the inclusion of additional costs. On the website of supplier Evek GmbH information on the latest arrivals of products. We have the best price-quality ratio. Supplier Evek GmbH offers to buy nickel alloys, price - the best from the supplier.
