FIELD: powder metallurgy.
SUBSTANCE: invention relates to powder metallurgy, in particular to the manufacture of products from a reactive powder material. It can be used to obtain materials with radiation-shielding or neutron-shielding properties. To obtain pressed parts, powdered lithium hydride of natural isotopic composition is used as a reactive material. Shaping of parts of a given profile is carried out by pressing at a specific load of at least 3 t/cm2 at room temperature. The parts are placed in a sealed container evacuated to 140-170 Pa and heat treatment is carried out by raising the temperature to 500-600°C at a heating rate of no more than 10°C/min. The heat treatment process is carried out for 1-5 hours, followed by cooling and holding in the container for at least 3 hours, while maintaining a predetermined degree of vacuum in a sealed container within 140-170 Pa.
EFFECT: improvement of operational characteristics, namely mechanical strength in compression, stabilization of the chemical composition, as well as provision of conditions for increasing the adhesion of the protective coating applied to the parts before operation under the influence of aggressive environmental factors.
2 cl, 5 dwg, 3 ex
Title | Year | Author | Number |
---|---|---|---|
METHOD FOR MANUFACTURING MULTILAYER PARTS FROM A REACTIVE MATERIAL | 2022 |
|
RU2792095C1 |
METHOD OF THE HEAT-RESISTANT ALLOYS PRODUCTION BASED ON INTERMETALLIDE NbAl (EMBODIMENTS) | 2017 |
|
RU2647424C1 |
METHOD OF PRODUCING BILLETS FROM ALLOYS BASED ON INTERMETALLIDES OF Nb-Al SYSTEM | 2016 |
|
RU2624562C1 |
PROCESS OF PRODUCTION OF SEMIFINISHED ITEMS FROM POWDERY ALUMINUM ALLOYS | 1997 |
|
RU2121904C1 |
METHOD FOR APPLICATION OF WEAR-RESISTANT AND CORROSION-RESISTANT COATING OF POWDERED HARD ALLOYS | 2020 |
|
RU2761568C1 |
METHOD FOR APPLYING THERMODIFFUSION ZINC COATING ONTO STEEL PIPES AND STEEL PIPE WITH SAID COATING | 2022 |
|
RU2785211C1 |
METHOD FOR CAPILLARY SOLDERING OF PARTS MADE OF STAINLESS STEEL IN FORM OF NOZZLE AND CYLINDRICAL BUSH | 2006 |
|
RU2375160C2 |
METHOD FOR MANUFACTURING NICKEL-BASED ALLOY DETAILS | 2010 |
|
RU2451767C2 |
METHOD FOR MAKING PRODUCTS OF FOAMED ALUMINUM | 1999 |
|
RU2180361C2 |
METHOD OF TREATMENT OF CASTS OUT OF HEAT RESISTANT ALLOY | 2007 |
|
RU2344195C2 |
Authors
Dates
2022-01-18—Published
2021-05-21—Filed