The invention discloses a double
metal alloy barrel material.
Raw material powder of the double
metal alloy barrel material comprises, by
mass, 25-50% of
molybdenum, 2-10% of
boron, 5-15% of
chromium, 2-10% of
nickel, 1-5 %of
manganese, 0.1-1% of carbon, 0.8-3% of
chromium carbide and the balance ferrum. The producing technology of the double
metal alloy barrel material comprises the following steps of 1), raw
powder ball-milling, 2),
powder mixing and
drying, 3), powder pressing for forming a
green body, 4)
green body machining and shaping, 5), vacuum
degreasing and
sintering, 6) semi-finished product shaping and
machining, 7)
green body heat covering treatment, and 8), inner hole
machining treatment. A double
metal alloy barrel produced by the above materials is moderate in rigidity, excellent in high temperature performance, good in bending strength, close to density of steel substrate, high in breaking tenacity, excellent in wear-resisting property and excellent in decay resistance,
plastic molding can be more stable by using the producing technology, and the service life of the alloy barrel is greatly improved.