A kind of alloy die cast techniqueTechnical field
The present invention relates to extrusion process technical field, more particularly to a kind of alloy die cast technique.
Background technology
Extrusion process is organically to combine die casting machine, compression mod and three big key element of alloy and be subject to the mistake of integrated useJourney.And metal is that the technological factors such as pressure, speed, temperature and time are obtained into unification by the process of filling die cavity during die castingProcess.Meanwhile these technological factors influence each other again, mutually restrict, and complement each other.Only correctly select and adjust thisA little factors, it is allowed to harmonious, can just achieves desired results.Therefore, casting structure is not only paid attention in press casting procedureManufacturability, the advance of compression mod, die casting machine performance and structure Optimality, the adaptability and smelting technology that diecasting alloys are selectedIt is normative；Important function of the technological parameters such as pressure, temperature and time to casting quality should more be paid attention to.It should be weighed in press casting procedureDepending on effectively being controlled these parameters.
Extrusion process of the prior art, the defects of being primarily present be：Product qualified rate is low, mainly due in pressure, temperatureThe control of degree and time are not good enough, and the product produced is coarse, and quality is relatively low.
The content of the invention
Based on this, it is an object of the invention to provide a kind of alloy die cast technique, by the way that different element combinations are smelted intoAlloy, according still further to set pressure, temperature and time carry out die casting, after improving product qualified rate, also improve productQuality.
The present invention provides a kind of alloy die cast technique, specifically includes following step：
(1) alloy meltings：Llowing group of materials is added in electric furnace and is heated to 600 DEG C -750 DEG C, is annealed, the materialForm as (in parts by weight)：
Carbon 2.5-3 parts；Vanadium 0.032-0.052 parts；Silicon 2.2-2.5 parts；Phosphorus 0.065-0.075 parts；Nitrogen 0.015-0.02 parts；Sulphur0.015-0.018 parts；Magnesium 2.0-3.0 parts；Titanium 0.05-0.1 parts；Manganese 0.15-0.25 parts；Bismuth 0.2-0.32 parts；Gadolinium 0.45-0.55Part；Zirconium 0.55-0.65 parts；Chromium 0.02-0.12 parts；
(2) electromagnetic agitations：Alloy molten solution in step (1) is moved into holding furnace, electromagnetic field is applied to alloy molten solution, makes conjunctionGolden liquation produces inductive loop, implements electromagnetic agitation, while it is 700-720 DEG C to keep the temperature in holding furnace；
(3) matched moulds note oxygen：Mould closed forming cavity and running channel, by injecting hole into the injection chamber and die cavity of die castingOxygen is injected, drives away the air in injection chamber and die cavity；
(4) die casting：The die-casting technological parameter of die casting machine sets as follows：180 DEG C of die heater temperature, mould preheating time 50min,Injection low speed 92%, pressurization position 300mm, pumping rate 60%, injection terminate 150min, shot time 5s, cool time10s, boost pressure 60MPa and mode transfer pressure 21MPa, start die casting machine progress die casting under above-mentioned setting die-casting technological parameter；
(5) is molded；
(6) goes out part, produces.
Preferably, in the step (1), the composition of the material is (in parts by weight)：2.85 parts of carbon；Vanadium0.042 part；2.35 parts of silicon；0.07 part of phosphorus；0.018 part of nitrogen；0.0165 part of sulphur；2.5 parts of magnesium；0.075 part of titanium；0.2 part of manganese；Bismuth0.27 part；0.5 part of gadolinium；0.6 part of zirconium；0.1 part of chromium.
Preferably, in the step (1), 670 DEG C are heated in electric furnace.
Preferably, in the step (2), it is 715 DEG C to keep the temperature in holding furnace.
Preferably, in the step (3), the injection oxygen time continues the 8-12 seconds, pressure 0.8-1.2Mpa.
Beneficial effects of the present invention are：Processing step is reasonable, and each parameter setting of die casting is reasonable, alloy molten solution is put downQuietly casting mold, after improving product qualified rate, also improve the quality of product.
Embodiment
For the feature of the present invention, technological means and the specific purposes reached, function can be further appreciated that, with reference toEmbodiment is described in further detail to the present invention.
Embodiment 1：
The present invention provides a kind of alloy die cast technique, specifically includes following step：
(1) alloy meltings：Llowing group of materials is added in electric furnace and is heated to 600 DEG C, is annealed, the composition of the material is(in parts by weight)：
2.5 parts of carbon；0.032 part of vanadium；2.2 parts of silicon；0.065 part of phosphorus；0.015 part of nitrogen；0.015 part of sulphur；2.0 parts of magnesium；0.05 part of titanium；0.15 part of manganese；0.2 part of bismuth；0.45 part of gadolinium；0.55 part of zirconium；0.02 part of chromium；
(2) electromagnetic agitations：Alloy molten solution in step (1) is moved into holding furnace, electromagnetic field is applied to alloy molten solution, makes conjunctionGolden liquation produces inductive loop, implements electromagnetic agitation, while it is 700 DEG C to keep the temperature in holding furnace；
(3) matched moulds note oxygen：Mould closed forming cavity and running channel, by injecting hole into the injection chamber and die cavity of die castingOxygen is injected, drives away the air in injection chamber and die cavity；The injection oxygen time continues 8 seconds, pressure 0.8Mpa；
(4) die casting：The die-casting technological parameter of die casting machine sets as follows：180 DEG C of die heater temperature, mould preheating time 50min,Injection low speed 92%, pressurization position 300mm, pumping rate 60%, injection terminate 150min, shot time 5s, cool time10s, boost pressure 60MPa and mode transfer pressure 21MPa, start die casting machine progress die casting under above-mentioned setting die-casting technological parameter；
(5) is molded；
(6) goes out part, produces.
Embodiment 2：
The present invention provides a kind of alloy die cast technique, specifically includes following step：
(1) alloy meltings：Llowing group of materials is added in electric furnace and is heated to 670 DEG C, is annealed, the composition of the material is(in parts by weight)：2.85 parts of carbon；0.042 part of vanadium；2.35 parts of silicon；0.07 part of phosphorus；0.018 part of nitrogen；0.0165 part of sulphur；Magnesium 2.5Part；0.075 part of titanium；0.2 part of manganese；0.27 part of bismuth；0.5 part of gadolinium；0.6 part of zirconium；0.1 part of chromium；
(2) electromagnetic agitations：Alloy molten solution in step (1) is moved into holding furnace, electromagnetic field is applied to alloy molten solution, makes conjunctionGolden liquation produces inductive loop, implements electromagnetic agitation, while it is 715 DEG C to keep the temperature in holding furnace；
(3) matched moulds note oxygen：Mould closed forming cavity and running channel, by injecting hole into the injection chamber and die cavity of die castingOxygen is injected, drives away the air in injection chamber and die cavity；The injection oxygen time continues 10 seconds, pressure 1.0Mpa；
(4) die casting：The die-casting technological parameter of die casting machine sets as follows：180 DEG C of die heater temperature, mould preheating time 50min,Injection low speed 92%, pressurization position 300mm, pumping rate 60%, injection terminate 150min, shot time 5s, cool time10s, boost pressure 60MPa and mode transfer pressure 21MPa, start die casting machine progress die casting under above-mentioned setting die-casting technological parameter；
(5) is molded；
(6) goes out part, produces.
Embodiment 3：
The present invention provides a kind of alloy die cast technique, specifically includes following step：
(1) alloy meltings：Llowing group of materials is added in electric furnace and is heated to 750 DEG C, is annealed, the composition of the material is(in parts by weight)：
3 parts of carbon；0.052 part of vanadium；2.5 parts of silicon；0.075 part of phosphorus；0.02 part of nitrogen；0.018 part of sulphur；3.0 parts of magnesium；0.1 part of titanium；Manganese0.25 part；0.32 part of bismuth；0.55 part of gadolinium；0.65 part of zirconium；0.12 part of chromium；
(2) electromagnetic agitations：Alloy molten solution in step (1) is moved into holding furnace, electromagnetic field is applied to alloy molten solution, makes conjunctionGolden liquation produces inductive loop, implements electromagnetic agitation, while it is 720 DEG C to keep the temperature in holding furnace；
(3) matched moulds note oxygen：Mould closed forming cavity and running channel, by injecting hole into the injection chamber and die cavity of die castingOxygen is injected, drives away the air in injection chamber and die cavity；The injection oxygen time continues 12 seconds, pressure 1.2Mpa；
(4) die casting：The die-casting technological parameter of die casting machine sets as follows：180 DEG C of die heater temperature, mould preheating time 50min,Injection low speed 92%, pressurization position 300mm, pumping rate 60%, injection terminate 150min, shot time 5s, cool time10s, boost pressure 60MPa and mode transfer pressure 21MPa, start die casting machine progress die casting under above-mentioned setting die-casting technological parameter；
(5) is molded；
(6) goes out part, produces.
Embodiment described above only expresses three kinds of embodiments of the present invention, and its description is more specific and detailed, but simultaneouslyTherefore the limitation to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for one of ordinary skill in the artFor, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the guarantor of the present inventionProtect scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.