Double metal alloy barrel material and producing technology thereof

Abstract

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.

Description

technical field [0001] The invention relates to the technical field of production of injection molding extrusion and granulation barrels, in particular to a bimetallic alloy barrel material with ternary boride-based metal (Mo2FeB2) ceramic components and a production process thereof. Background technique [0002] In the field of existing plastic molding extrusion barrel production, under the premise of higher and higher requirements on the comprehensive performance of plastics, and under the condition that special injection molding extrusion is becoming more and more popular, injection extrusion molding is in the process of plasticizing the barrel, engineering Plastic, powder metallurgy injection, ceramic injection molding, magnet iron powder, bakelite, BMC and other severe wear and corrosion fields, causing severe wear and corrosion to the barrel, such as 90% magnet powder, 65% fiber, PPS+ Plastic molding under the conditions of 65% fiber addition, high environmental protec...

AI Technical Summary

Problems solved by technology

However, due to the thinning of the alloy layer and the increase in brittleness with the addition of tungsten carbide, it is greatly reduced during use.

Therefore, the status quo of alloy barrels at home and abroad cannot solve the high toughness, high wear resistance, and high corrosion resistance of alloy barrels at the same time, and the produced barrels will have various problems.

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