Summary of the invention
The technical problem that the present invention will solve provides a kind of high-chromium-nickel quinary alloy casting and production technique thereof that can improve wear resisting property.
Technical problem to be solved by this invention realizes through following technical scheme: the weight percentage of each component of high-chromium-nickel quinary alloy casting is: carbon 3.00-3.40, chromium 9.50-10.50, manganese 0.5-1.00; Silicon 1.40-1.80, molybdenum 0.50-0.55, nickel 5.00-5.50; Vanadium 0.10-0.13, rare earth 0.10-0.15, phosphorus≤0.04; Sulphur≤0.004, all the other are iron and impurity.
The production technique of high-chromium-nickel quinary alloy casting of the present invention, the weight percentage of each component of foundry goods is: carbon 3.00-3.40, chromium 9.50-10.50, manganese 0.5-1.00; Silicon 1.40-1.80, molybdenum 0.50-0.55, nickel 5.00-5.50; Vanadium 0.10-0.13, rare earth 0.10-0.15, phosphorus≤0.04; Sulphur≤0.004, all the other are iron and impurity, technological process may further comprise the steps:
(1) mould: with the signatory drawing design check and correction of client's contract;
(2) mulling: silica sand and water glass are mixed rolling 3-8 minute in the trolley type sand mill, the weight percent of silica sand and water glass is 92-94: 6-8;
(3) moulding: mold flask, rising head, core are examined the back and are operated by working specification;
(4) smelt: thrown in by electric furnace worker preparing A 3, A40 or A45 steel scrap, the 16-22 pig iron and each metallic element, each metallic element component strictness is measured in proportion;
(5) cast: the cast of driving system control bull ladle, sandbox insulation 36-48 hour;
(6) sand removal: manual handling;
(7) soldering: cutting is mended in hot weld;
(8) ball blast: treating product any surface finish;
(9) thermal treatment: in full fiber electronic number car controlling stove, divide second heat treatment, thermal treatment temp is 400-950 ℃ for the first time, and the time is 40 hours, and the tempering heat treatment temperature is 200-350 ℃ for the second time, and the time is 9 hours.
The technique scheme that the present invention adopts, the sandbox soaking time is long during owing to cast, and the metallic element structural constituent is stable; High-load chromium, nickel element have also improved the hardness of product, thereby improve the wear resisting property of product; Adopt second heat treatment technology also can eliminate internal stress, reduce crackle, crack performance, the stability of enhancing product performance.
Embodiment
Embodiment 1:
High-chromium-nickel quinary alloy casting of the present invention, the weight percentage of its each component is: carbon 3.00, chromium 9.50, manganese 0.5, silicon 1.40, molybdenum 0.50, nickel 5.00, vanadium 0.10, rare earth 0.10, phosphorus 0.01, sulphur 0.001, all the other are iron and impurity.
The production technique of high-chromium-nickel quinary alloy casting of the present invention includes the following step:
(1) mould: with the signatory drawing design check and correction of client's contract;
(2) mulling: silica sand and water glass are mixed rolling 3 minutes, silica sand and water in the trolley type sand mill
Weight of glass per-cent is 92: 8;
(3) moulding: mold flask, rising head, core are examined the back and are operated by working specification;
(4) smelt: thrown in by No. 3 steel scraps of electric furnace worker preparing A, No. 16 pig iron and each metallic element, each metallic element component is strict measures in embodiment 1 ratio;
(5) cast: the cast of driving system control bull ladle, sandbox insulation 36 hours;
(6) sand removal: manual handling;
(7) soldering: cutting is mended in hot weld;
(8) ball blast: treating product any surface finish;
(9) thermal treatment: in full fiber electronic number car controlling stove, divide second heat treatment, thermal treatment temp is 400 ℃ for the first time, and the time is 40 hours, and the tempering heat treatment temperature is 200 ℃ for the second time, and the time is 9 hours.
Embodiment 2:
High-chromium-nickel quinary alloy casting of the present invention, the weight percentage of its each component is: carbon 3.20, chromium 10.00, manganese 0.80, silicon 1.60, molybdenum 0.52, nickel 5.20, vanadium 0.11, rare earth 0.12, phosphorus 0.02, sulphur 0.002, all the other are iron and impurity.
The production technique of high-chromium-nickel quinary alloy casting of the present invention includes the following step:
(1) mould: with the signatory drawing design check and correction of client's contract;
(2) mulling: silica sand and water glass are mixed rolling 5 minutes in the trolley type sand mill, the weight percent of silica sand and water glass is 93: 7;
(3) moulding: mold flask, rising head, core are examined the back and are operated by working specification;
(4) smelt: thrown in by No. 40 steel scraps of electric furnace worker preparing A, No. 20 pig iron and each metallic element, each metallic element component is strict measures in embodiment 2 ratios;
(5) cast: the cast of driving system control bull ladle, sandbox insulation 42 hours;
(6) sand removal: manual handling;
(7) soldering: cutting is mended in hot weld;
(8) ball blast: treating product any surface finish;
(9) thermal treatment: in full fiber electronic number car controlling stove, divide second heat treatment, thermal treatment temp is 700 ℃ for the first time, and the time is 40 hours, and the tempering heat treatment temperature is 300 ℃ for the second time, and the time is 9 hours.
Embodiment 3:
High-chromium-nickel quinary alloy casting of the present invention, the weight percentage of its each component is: carbon 3.40, chromium 10.50, manganese 1.00, silicon 1.80, molybdenum 0.55, nickel 5.50, vanadium 0.13, rare earth 0.15, phosphorus 0.04, sulphur 0.004, all the other are iron and impurity.
The production technique of high-chromium-nickel quinary alloy casting of the present invention includes the following step:
(1) mould: with the signatory drawing design check and correction of client's contract;
(2) mulling: silica sand and water glass are mixed rolling 8 minutes in the trolley type sand mill, the weight percent of silica sand and water glass is 94: 6;
(3) moulding: mold flask, rising head, core are examined the back and are operated by working specification;
(4) smelt: thrown in by No. 45 steel scraps of electric furnace worker preparing A, No. 22 pig iron and each metallic element, each metallic element component is strict measures in embodiment 3 ratios;
(5) cast: the cast of driving system control bull ladle, sandbox insulation 48 hours;
(6) sand removal: manual handling;
(7) soldering: cutting is mended in hot weld;
(8) ball blast: treating product any surface finish;
(9) thermal treatment: in full fiber electronic number car controlling stove, divide second heat treatment, thermal treatment temp is 950 ℃ for the first time, and the time is 40 hours, and the tempering heat treatment temperature is 350 ℃ for the second time, and the time is 9 hours.
Component and production technique that the present invention adopts make the tensile strength of high-chromium-nickel quinary alloy casting be not less than 650MPa, and impelling strength is not less than 3J/cm2, and elongation is not more than 8%, and surface hardness can reach 60-62HRC.