CN114107718A - Alloy casting process - Google Patents
Alloy casting process Download PDFInfo
- Publication number
- CN114107718A CN114107718A CN202111445514.4A CN202111445514A CN114107718A CN 114107718 A CN114107718 A CN 114107718A CN 202111445514 A CN202111445514 A CN 202111445514A CN 114107718 A CN114107718 A CN 114107718A
- Authority
- CN
- China
- Prior art keywords
- alloy
- casting
- bell jar
- temperature
- ingot
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 141
- 239000000956 alloy Substances 0.000 title claims abstract description 141
- 238000005266 casting Methods 0.000 title claims abstract description 66
- 239000007788 liquid Substances 0.000 claims abstract description 35
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 28
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 18
- 239000011777 magnesium Substances 0.000 claims abstract description 18
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 17
- 238000002844 melting Methods 0.000 claims abstract description 16
- 230000008018 melting Effects 0.000 claims abstract description 16
- 229910052742 iron Inorganic materials 0.000 claims abstract description 14
- 239000012535 impurity Substances 0.000 claims abstract description 11
- 238000003825 pressing Methods 0.000 claims abstract description 11
- 238000005238 degreasing Methods 0.000 claims abstract description 10
- 238000003756 stirring Methods 0.000 claims abstract description 10
- 239000001996 bearing alloy Substances 0.000 claims abstract description 6
- 238000010438 heat treatment Methods 0.000 claims abstract description 6
- 150000003839 salts Chemical class 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 24
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 20
- 229910052710 silicon Inorganic materials 0.000 claims description 20
- 239000010703 silicon Substances 0.000 claims description 20
- 238000001816 cooling Methods 0.000 claims description 17
- 230000008569 process Effects 0.000 claims description 15
- 238000004140 cleaning Methods 0.000 claims description 12
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 10
- 239000012459 cleaning agent Substances 0.000 claims description 10
- 239000002893 slag Substances 0.000 claims description 9
- 238000007689 inspection Methods 0.000 claims description 7
- 239000007787 solid Substances 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 5
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 5
- 229910001245 Sb alloy Inorganic materials 0.000 claims description 5
- 230000002378 acidificating effect Effects 0.000 claims description 5
- 239000002140 antimony alloy Substances 0.000 claims description 5
- GVFOJDIFWSDNOY-UHFFFAOYSA-N antimony tin Chemical compound [Sn].[Sb] GVFOJDIFWSDNOY-UHFFFAOYSA-N 0.000 claims description 5
- 239000007864 aqueous solution Substances 0.000 claims description 5
- 239000011651 chromium Substances 0.000 claims description 5
- 229910052804 chromium Inorganic materials 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 239000003921 oil Substances 0.000 claims description 5
- 238000004806 packaging method and process Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000005498 polishing Methods 0.000 claims description 4
- 239000002253 acid Substances 0.000 claims 1
- 238000000605 extraction Methods 0.000 claims 1
- 238000005406 washing Methods 0.000 claims 1
- 238000002360 preparation method Methods 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 abstract description 6
- 238000007670 refining Methods 0.000 abstract description 5
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 239000000243 solution Substances 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 244000137852 Petrea volubilis Species 0.000 description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 239000004519 grease Substances 0.000 description 3
- 238000005554 pickling Methods 0.000 description 3
- 238000005488 sandblasting Methods 0.000 description 3
- 229910052709 silver Inorganic materials 0.000 description 3
- 239000004332 silver Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 229910000640 Fe alloy Inorganic materials 0.000 description 2
- 238000009853 pyrometallurgy Methods 0.000 description 2
- 229910001021 Ferroalloy Inorganic materials 0.000 description 1
- 229910001145 Ferrotungsten Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005261 decarburization Methods 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C3/00—Selection of compositions for coating the surfaces of moulds, cores, or patterns
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
- B22D27/04—Influencing the temperature of the metal, e.g. by heating or cooling the mould
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Continuous Casting (AREA)
Abstract
The invention discloses an alloy casting process. In the invention, during heating and melting, after the magnesium is completely melted, stirring uniformly, adjusting the temperature to 690-720 ℃, then removing salts, pressing magnesium into aluminum alloy liquid by using a bell jar, moving the bell jar, after the magnesium is completely melted, lifting the bell jar out of the aluminum alloy liquid to obtain the alloy liquid to be cast; after the preparation work is finished, the melted bearing alloy with the temperature controlled between 410 and 450 ℃ is poured into an iron ladle preheated to 280 to 295 ℃ for casting, a bell jar press-in type refining and impurity removal mode is adopted for the alloy, gas, non-metallic inclusions and other harmful elements mixed in the alloy casting process can be effectively taken out, and the degreasing of the cast ingot and the removal of oxide skin on the alloy cast ingot are matched, so that the purity and the hardness of the alloy are improved, and more economic benefits are brought to a manufacturer.
Description
Technical Field
The invention belongs to the technical field of alloy casting, and particularly relates to an alloy casting process.
Background
Alloy casting most varieties of alloy production are pyrometallurgical processes. Except for the reduction products of the aluminothermic method, ferrotungsten and the vacuum solid decarburization method, the pyrometallurgical process of the alloy finally obtains liquid ferroalloy. In addition to granulation, casting is the most common method of changing a liquid iron alloy to a solid iron alloy. The used devices are foundry ladles, ingot molds, casting machines and the like.
However, in a common alloy casting process, the alloy and the interior of the alloy contain gas, non-metallic inclusions and other harmful elements, so that more impurities are doped in the alloy interior, and the hardness of the alloy is influenced.
Disclosure of Invention
The invention aims to: in order to solve the above-mentioned problems, a process for casting an alloy is provided.
The technical scheme adopted by the invention is as follows: a process for alloy casting, comprising the steps of:
s1, cleaning a shell of an alloy ingot, degreasing and removing an oxide skin on the alloy ingot;
s2, melting 1800-2000 parts of alloy ingot in a crucible, wherein the melting temperature is lower than 730 ℃, then adding 18-20 parts of silicon by weight of the alloy ingot into the molten alloy liquid, and after the silicon is added, pressing a silicon block into the aluminum alloy liquid by using the alloy ingot, wherein the silicon block is not allowed to be exposed in the air;
s3, heating and melting, stirring uniformly after all the molten magnesium is melted, adjusting the temperature to 690-720 ℃, then removing salts, pressing magnesium into the aluminum alloy liquid by using a bell jar, moving the bell jar, and after all the magnesium is melted, lifting the bell jar out of the aluminum alloy liquid to obtain the alloy liquid to be cast;
s4, preheating all casting tools to 180-220 ℃ before casting; taking out the die preheated to 280-295 ℃, placing the die on a platform before casting, and preheating to 250-300 ℃;
s5, pouring the melted bearing alloy with the temperature controlled between 410 and 450 ℃ into an iron ladle preheated to 280 to 295 ℃ for casting;
s6, uniformly cooling the middle lower part of the bearing shell by adopting normal-temperature cold water, and naturally cooling the alloy cooled to be solid in air from 200 ℃ to room temperature;
and S7, performing quality inspection on the alloy cooled in the step S6, and packaging and storing the alloy qualified in the inspection.
In a preferred embodiment, in step S1, the oil stain is removed by using an alkaline cleaning agent, and the oxide is removed by using an acidic cleaning agent.
In a preferred embodiment, in step S1, when the outer surface of the alloy ingot has golden or brown oxidized spots, the alloy ingot is washed with 30% hydrochloric acid aqueous solution or brushed with a wire brush.
In a preferred embodiment, in step S4, the alloy liquid is fully stirred before casting, and is left for 2-4 min, and the dross is cleaned; the casting temperature of the tin-antimony alloy is 400-440 ℃.
In a preferred embodiment, in step S4, for core taking, a graphite powder and gasoline mixture or chromium may be coated on the core rod, and the core rod is wound with white paper, so that the core rod can be easily drawn out after cooling.
In a preferred embodiment, in step S5, the casting should not be started too fast, the speed should be increased gradually, and the slag-removing iron rod is used to remove slag and impurities on the surface of the molten alloy so as to avoid pouring foreign matters into the formed alloy.
In a preferred embodiment, in the step S3, the outlet hole on the bell jar is preferably 3 to 5 mm; the treatment temperature is 720-745 ℃, and the total addition amount is divided into two times.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
in the invention, a bell jar press-in type refining and impurity removal mode is adopted for the alloy, so that gas, non-metallic inclusions and other harmful elements mixed in the alloy casting process can be effectively taken out, and the degreasing and the oxide skin removal on the alloy ingot are matched, so that the purity and the hardness of the alloy are improved, and more economic benefits are brought to manufacturers.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
a process for alloy casting, comprising the steps of:
s1, cleaning the shell of the alloy ingot, degreasing and removing oxide skin on the alloy ingot, wherein dirt can be removed by sand paper, a steel wire brush or a sand blasting method; in step S1, removing oil stain with alkaline cleaning agent, and removing oxide with acidic cleaning agent;
s2, checking and correcting the alloy ingot, checking whether the oxide exists on the inner surface of the steel shell, and the surface without the oxide should be silver gray, then cleaning the shell of the alloy ingot again, and removing grease and oxide skin on the alloy ingot; in step S2, when the outer surface of the alloy ingot has golden or brown oxidized spots, pickling with 30% hydrochloric acid aqueous solution, or polishing with a wire brush;
s3, melting 1800 parts of alloy ingot in a crucible, wherein the melting temperature is lower than 730 ℃, then adding 18 parts of silicon by weight of the alloy ingot into the melted alloy liquid, and after the silicon is added, pressing the silicon block into the aluminum alloy liquid by using the alloy ingot, wherein the silicon block is not allowed to be exposed in the air;
s4, heating and melting, stirring uniformly after all the molten magnesium is melted, adjusting the temperature to 690-720 ℃, then removing salts, pressing magnesium into the aluminum alloy liquid by using a bell jar, moving the bell jar, and after all the magnesium is melted, lifting the bell jar out of the aluminum alloy liquid to obtain the alloy liquid to be cast; in step S4, the air outlet on the bell jar is preferably 3-middle 5 mm; the treatment temperature is 720-745 ℃, and the total addition amount is divided into two times;
s5, preheating all casting tools to 180-220 ℃ before casting; taking out the die preheated to 280-295 ℃, placing the die on a platform before casting, and preheating to 250-300 ℃; in step S5, fully stirring the alloy liquid before casting, standing for 2-4 min, and cleaning floating slag; the casting temperature of the tin-antimony alloy is 400-440 ℃; in step S5, for convenience of coring, a layer of a mixture of graphite powder and gasoline may be coated on the core rod, or a layer of chromium may be coated on the core rod, and the core rod should be wrapped with white paper, so that the core rod is easy to be drawn out after cooling;
s6, when the preparation is finished, immediately pouring the melted bearing alloy with the temperature controlled between 410 and 450 ℃ into an iron ladle preheated to 280 to 295 ℃ for casting; in step S6, the casting should not be too fast when starting, the speed should be gradually increased, and the slag-removing iron rod is used to remove slag and impurities on the surface of the molten alloy, so as to avoid pouring foreign matters into the formed alloy;
s7, cooling, namely uniformly cooling the middle lower part of the bearing shell by cold water at normal temperature, naturally cooling the alloy cooled to be solid in the air from 200 ℃ to room temperature,
and S8, performing quality inspection on the alloy cooled in the step S7, hanging the poured alloy on an iron wire, inspecting whether the alloy surface operators are welded together, knocking the alloy surface operators by a copper bar to make a crisp sound normal, and performing casting again if the alloy is turbid, dumb and noisy and the welding of the alloy is not good.
And S9, packaging and storing the alloy qualified in the step S8, so that the whole preparation process can be finished, a bell jar press-in type refining and impurity removal mode is adopted for the alloy, gas, non-metallic inclusions and other harmful elements mixed in the alloy casting process can be effectively taken out, and the degreasing and scale removal on the cast ingot and the removal of oxide skin on the alloy cast ingot are matched, so that the purity and hardness of the alloy are improved, and more economic benefits are brought to manufacturers.
Example two:
a process for alloy casting, comprising the steps of:
s1, cleaning the shell of the alloy ingot, degreasing and removing oxide skin on the alloy ingot, wherein dirt can be removed by sand paper, a steel wire brush or a sand blasting method; in step S1, removing oil stain with alkaline cleaning agent, and removing oxide with acidic cleaning agent;
s2, checking and correcting the alloy ingot, checking whether the oxide exists on the inner surface of the steel shell, and the surface without the oxide should be silver gray, then cleaning the shell of the alloy ingot again, and removing grease and oxide skin on the alloy ingot; in step S2, when the outer surface of the alloy ingot has golden or brown oxidized spots, pickling with 30% hydrochloric acid aqueous solution, or polishing with a wire brush;
s3, melting 2000 parts of alloy ingot in a crucible, wherein the melting temperature is lower than 730 ℃, then adding 20 parts of silicon by weight of the alloy ingot into the melted alloy liquid, and after the silicon is added, pressing the silicon block into the aluminum alloy liquid by using the alloy ingot, wherein the silicon block is not allowed to be exposed in the air;
s4, heating and melting, stirring uniformly after all the molten magnesium is melted, adjusting the temperature to 690-720 ℃, then removing salts, pressing magnesium into the aluminum alloy liquid by using a bell jar, moving the bell jar, and after all the magnesium is melted, lifting the bell jar out of the aluminum alloy liquid to obtain the alloy liquid to be cast; in step S4, the air outlet on the bell jar is preferably 3-middle 5 mm; the treatment temperature is 720-745 ℃, and the total addition amount is divided into two times;
s5, preheating all casting tools to 180-220 ℃ before casting; taking out the die preheated to 280-295 ℃, placing the die on a platform before casting, and preheating to 250-300 ℃; in step S5, fully stirring the alloy liquid before casting, standing for 2-4 min, and cleaning floating slag; the casting temperature of the tin-antimony alloy is 400-440 ℃; in step S5, for convenience of coring, a layer of a mixture of graphite powder and gasoline may be coated on the core rod, or a layer of chromium may be coated on the core rod, and the core rod should be wrapped with white paper, so that the core rod is easy to be drawn out after cooling;
s6, when the preparation is finished, immediately pouring the melted bearing alloy with the temperature controlled between 410 and 450 ℃ into an iron ladle preheated to 280 to 295 ℃ for casting; in step S6, the casting should not be too fast when starting, the speed should be gradually increased, and the slag-removing iron rod is used to remove slag and impurities on the surface of the molten alloy, so as to avoid pouring foreign matters into the formed alloy;
s7, cooling, namely uniformly cooling the middle lower part of the bearing shell by adopting cold water at normal temperature, and naturally cooling the alloy cooled to be solid in the air from 200 ℃ to room temperature;
and S8, performing quality inspection on the alloy cooled in the step S7, hanging the poured alloy on an iron wire, inspecting whether the alloy surface operators are welded together, knocking the alloy surface operators by a copper bar to make a crisp sound normal, and performing casting again if the alloy is turbid, dumb and noisy and the welding of the alloy is not good.
And S9, packaging and storing the alloy qualified in the step S8, so that the whole preparation process can be finished, a bell jar press-in type refining and impurity removal mode is adopted for the alloy, gas, non-metallic inclusions and other harmful elements mixed in the alloy casting process can be effectively taken out, and the degreasing and scale removal on the cast ingot and the removal of oxide skin on the alloy cast ingot are matched, so that the purity and hardness of the alloy are improved, and more economic benefits are brought to manufacturers.
Example three:
a process for alloy casting, comprising the steps of:
s1, cleaning the shell of the alloy ingot, degreasing and removing oxide skin on the alloy ingot, wherein dirt can be removed by sand paper, a steel wire brush or a sand blasting method; in step S1, removing oil stain with alkaline cleaning agent, and removing oxide with acidic cleaning agent;
s2, checking and correcting the alloy ingot, checking whether the oxide exists on the inner surface of the steel shell, and the surface without the oxide should be silver gray, then cleaning the shell of the alloy ingot again, and removing grease and oxide skin on the alloy ingot; in step S2, when the outer surface of the alloy ingot has golden or brown oxidized spots, pickling with 30% hydrochloric acid aqueous solution, or polishing with a wire brush;
s3, melting 1900 parts of alloy ingot in a crucible, wherein the melting temperature is lower than 730 ℃, then adding 19 parts of silicon by weight of the alloy ingot into the melted alloy liquid, pressing the silicon block into the aluminum alloy liquid by using the alloy ingot after the silicon block is added, and not allowing the silicon block to be exposed in the air;
s4, heating and melting, stirring uniformly after all the molten magnesium is melted, adjusting the temperature to 690-720 ℃, then removing salts, pressing magnesium into the aluminum alloy liquid by using a bell jar, moving the bell jar, and after all the magnesium is melted, lifting the bell jar out of the aluminum alloy liquid to obtain the alloy liquid to be cast; in step S4, the air outlet on the bell jar is preferably 3-middle 5 mm; the treatment temperature is 720-745 ℃, and the total addition amount is divided into two times;
s5, preheating all casting tools to 180-220 ℃ before casting; taking out the die preheated to 280-295 ℃, placing the die on a platform before casting, and preheating to 250-300 ℃; in step S5, fully stirring the alloy liquid before casting, standing for 2-4 min, and cleaning floating slag; the casting temperature of the tin-antimony alloy is 400-440 ℃; in step S5, for convenience of coring, a layer of a mixture of graphite powder and gasoline may be coated on the core rod, or a layer of chromium may be coated on the core rod, and the core rod should be wrapped with white paper, so that the core rod is easy to be drawn out after cooling;
s6, when the preparation is finished, immediately pouring the melted bearing alloy with the temperature controlled between 410 and 450 ℃ into an iron ladle preheated to 280 to 295 ℃ for casting; in step S6, the casting should not be too fast when starting, the speed should be gradually increased, and the slag-removing iron rod is used to remove slag and impurities on the surface of the molten alloy, so as to avoid pouring foreign matters into the formed alloy;
s7, cooling, namely uniformly cooling the middle lower part of the bearing shell by cold water at normal temperature, naturally cooling the alloy cooled to be solid in the air from 200 ℃ to room temperature,
and S8, performing quality inspection on the alloy cooled in the step S7, hanging the poured alloy on an iron wire, inspecting whether the alloy surface operators are welded together, knocking the alloy surface operators by a copper bar to make a crisp sound normal, and performing casting again if the alloy is turbid, dumb and noisy and the welding of the alloy is not good.
And S9, packaging and storing the alloy qualified in the step S8, so that the whole preparation process can be finished, a bell jar press-in type refining and impurity removal mode is adopted for the alloy, gas, non-metallic inclusions and other harmful elements mixed in the alloy casting process can be effectively taken out, and the degreasing and scale removal on the cast ingot and the removal of oxide skin on the alloy cast ingot are matched, so that the purity and hardness of the alloy are improved, and more economic benefits are brought to manufacturers.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (7)
1. A process for alloy casting, comprising the steps of:
s1, cleaning a shell of an alloy ingot, degreasing and removing an oxide skin on the alloy ingot;
s2, melting 1800-2000 parts of alloy ingot in a crucible, wherein the melting temperature is lower than 730 ℃, then adding 18-20 parts of silicon by weight of the alloy ingot into the molten alloy liquid, and after the silicon is added, pressing a silicon block into the aluminum alloy liquid by using the alloy ingot, wherein the silicon block is not allowed to be exposed in the air;
s3, heating and melting, stirring uniformly after all the molten magnesium is melted, adjusting the temperature to 690-720 ℃, then removing salts, pressing magnesium into the aluminum alloy liquid by using a bell jar, moving the bell jar, and after all the magnesium is melted, lifting the bell jar out of the aluminum alloy liquid to obtain the alloy liquid to be cast;
s4, preheating all casting tools to 180-220 ℃ before casting; taking out the die preheated to 280-295 ℃, placing the die on a platform before casting, and preheating to 250-300 ℃;
s5, pouring the melted bearing alloy with the temperature controlled between 410 and 450 ℃ into an iron ladle preheated to 280 to 295 ℃ for casting;
s6, uniformly cooling the middle lower part of the bearing shell by adopting normal-temperature cold water, and naturally cooling the alloy cooled to be solid in air from 200 ℃ to room temperature;
and S7, performing quality inspection on the alloy cooled in the step S6, and packaging and storing the alloy qualified in the inspection.
2. A process of alloy casting according to claim 1, wherein: in step S1, an alkaline cleaning agent is used to remove oil stains, and an acidic cleaning agent is used to remove oxides.
3. A process of alloy casting according to claim 1, wherein: in step S1, when the outer surface of the alloy ingot has golden or brown oxidized spots, a 30% hydrochloric acid aqueous solution is used for acid washing, or a wire brush is used for polishing.
4. A process of alloy casting according to claim 1, wherein: in the step S4, fully stirring the alloy liquid before casting, standing for 2-4 min, and cleaning floating slag; the casting temperature of the tin-antimony alloy is 400-440 ℃.
5. A process of alloy casting according to claim 1, wherein: in step S4, for core extraction, a layer of graphite powder and gasoline mixture or a layer of chromium is coated on the core rod, and the core rod is wound with white paper, so that the core rod can be easily extracted after the core rod is cooled after casting.
6. A process of alloy casting according to claim 1, wherein: in step S5, the casting should not be started too fast, the speed should be increased gradually, and the slag-removing iron rod is used to remove slag and impurities on the surface of the molten alloy, so as to avoid pouring foreign matters into the formed alloy.
7. A process of alloy casting according to claim 1, wherein: in the step S3, the air outlet hole on the bell jar is preferably 3-5 mm; the treatment temperature is 720-745 ℃, and the total addition amount is divided into two times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111445514.4A CN114107718A (en) | 2021-11-30 | 2021-11-30 | Alloy casting process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111445514.4A CN114107718A (en) | 2021-11-30 | 2021-11-30 | Alloy casting process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114107718A true CN114107718A (en) | 2022-03-01 |
Family
ID=80368466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111445514.4A Pending CN114107718A (en) | 2021-11-30 | 2021-11-30 | Alloy casting process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114107718A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1921214A1 (en) * | 1969-04-25 | 1970-11-12 | Vaw Ver Aluminium Werke Ag | Structural aluminium facing slabs |
| CN1173547A (en) * | 1996-08-14 | 1998-02-18 | 中国汽车工业总公司重庆汽车研究所 | Casting-state aluminium alloy and its prepn. method |
| CN105642874A (en) * | 2014-12-04 | 2016-06-08 | 重庆旭新悦数控机械有限公司 | Pouring technology for bearing alloy |
-
2021
- 2021-11-30 CN CN202111445514.4A patent/CN114107718A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1921214A1 (en) * | 1969-04-25 | 1970-11-12 | Vaw Ver Aluminium Werke Ag | Structural aluminium facing slabs |
| CN1173547A (en) * | 1996-08-14 | 1998-02-18 | 中国汽车工业总公司重庆汽车研究所 | Casting-state aluminium alloy and its prepn. method |
| CN105642874A (en) * | 2014-12-04 | 2016-06-08 | 重庆旭新悦数控机械有限公司 | Pouring technology for bearing alloy |
Non-Patent Citations (1)
| Title |
|---|
| 谢水生等: "《简明铝合金加工手册》", 31 December 2016, 冶金工业出版社 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4593397B2 (en) | Method for producing oxygen-free copper wire by continuous casting and rolling using rotary moving mold | |
| CN110340315B (en) | Method for continuously casting martensitic stainless steel by using large-section rectangular billet | |
| CN113649415A (en) | Preparation process of high-strength aluminum alloy welding wire | |
| CN110438297B (en) | Method for controlling molten steel temperature and cleanliness for producing low-carbon steel and ultra-low-carbon steel | |
| JP2023543731A (en) | Production method of free-cutting steel hot-rolled wire rod for OA shafts | |
| CN112605353A (en) | Ultra-large vertical continuous casting billet and production method thereof, and forging and production method thereof | |
| CN105642874A (en) | Pouring technology for bearing alloy | |
| CN114107718A (en) | Alloy casting process | |
| JP5500401B2 (en) | Continuous casting method of impact guarantee beam blank | |
| JPS5831062A (en) | Continuous cast steel strand | |
| CN116463519A (en) | Aluminum alloy smelting process | |
| JPH02205618A (en) | Method for continuously casting cast strip | |
| JPH04103741A (en) | Manufacture of bearing steel | |
| CN109570444A (en) | A kind of manufacturing process of complex-shaped surface mould stainless cast steel part | |
| CN114951579B (en) | Continuous casting method of high-carbon martensitic stainless steel | |
| JPH0375256B2 (en) | ||
| JP3395706B2 (en) | Continuous casting method | |
| CN107138713B (en) | Casting method of tin bronze valve casting | |
| CN113265578B (en) | Integrated control method for reducing delayed fracture of steel for prestressed reinforced concrete and application thereof | |
| CN115319033B (en) | Stainless steel composite ingot and vertical centrifugal casting process thereof | |
| US3214806A (en) | Method for fluid mold casting using casting slag | |
| JP4001264B2 (en) | Manufacturing method of steel with few surface defects | |
| EP0023759B1 (en) | Method of recycling steel scrap | |
| CN117816920A (en) | Thickened bimetal semisteel composite roll collar and preparation method and application thereof | |
| JP3180702B2 (en) | Continuous casting method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220301 |
|
| RJ01 | Rejection of invention patent application after publication |