CN114737108A - Formula of gold bearing and casting process thereof - Google Patents
Formula of gold bearing and casting process thereof Download PDFInfo
- Publication number
- CN114737108A CN114737108A CN202210468117.7A CN202210468117A CN114737108A CN 114737108 A CN114737108 A CN 114737108A CN 202210468117 A CN202210468117 A CN 202210468117A CN 114737108 A CN114737108 A CN 114737108A
- Authority
- CN
- China
- Prior art keywords
- bearing
- finished
- semi
- mold
- casting
- 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
- 238000005266 casting Methods 0.000 title claims abstract description 36
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical group [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 title claims abstract description 25
- 239000010931 gold Substances 0.000 title claims abstract description 25
- 229910052737 gold Inorganic materials 0.000 title claims abstract description 25
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 53
- 239000007788 liquid Substances 0.000 claims abstract description 42
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 39
- 239000000956 alloy Substances 0.000 claims abstract description 39
- 229910052742 iron Inorganic materials 0.000 claims abstract description 29
- 238000010438 heat treatment Methods 0.000 claims abstract description 26
- 238000005520 cutting process Methods 0.000 claims abstract description 17
- 239000002994 raw material Substances 0.000 claims abstract description 17
- 238000007689 inspection Methods 0.000 claims abstract description 16
- 229910052787 antimony Inorganic materials 0.000 claims abstract description 13
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 13
- 239000000203 mixture Substances 0.000 claims abstract description 13
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 13
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 13
- 229910052718 tin Inorganic materials 0.000 claims abstract description 13
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000000227 grinding Methods 0.000 claims abstract description 11
- 238000002844 melting Methods 0.000 claims abstract description 11
- 230000008018 melting Effects 0.000 claims abstract description 11
- 238000005498 polishing Methods 0.000 claims abstract description 11
- 238000001816 cooling Methods 0.000 claims abstract description 9
- 238000005303 weighing Methods 0.000 claims abstract description 7
- 238000001514 detection method Methods 0.000 claims abstract description 6
- 238000000465 moulding Methods 0.000 claims abstract description 6
- 239000000126 substance Substances 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 14
- 238000002347 injection Methods 0.000 claims description 12
- 239000007924 injection Substances 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 11
- 229910052751 metal Inorganic materials 0.000 claims description 11
- 238000011179 visual inspection Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 8
- 238000004321 preservation Methods 0.000 claims description 8
- 238000007667 floating Methods 0.000 claims description 7
- 239000002893 slag Substances 0.000 claims description 7
- 229910001018 Cast iron Inorganic materials 0.000 claims description 5
- 229910001208 Crucible steel Inorganic materials 0.000 claims description 5
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 5
- 238000004140 cleaning Methods 0.000 claims description 5
- 239000012459 cleaning agent Substances 0.000 claims description 5
- 239000006247 magnetic powder Substances 0.000 claims description 5
- 239000011159 matrix material Substances 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- 238000009966 trimming Methods 0.000 claims description 5
- 238000009472 formulation Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000012797 qualification Methods 0.000 abstract description 3
- 239000004615 ingredient Substances 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007528 sand casting Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
- C22C37/10—Cast-iron alloys containing aluminium or silicon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/06—Permanent moulds for shaped castings
- B22C9/065—Cooling or heating equipment for moulds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
- B22C9/082—Sprues, pouring cups
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/20—Stack moulds, i.e. arrangement of multiple moulds or flasks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
- B22C9/24—Moulds for peculiarly-shaped castings for hollow articles
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C1/00—Refining of pig-iron; Cast iron
- C21C1/08—Manufacture of cast-iron
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/40—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rings; for bearing races
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/08—Making cast-iron alloys
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The invention discloses a formula of a gold bearing and a casting process thereof, wherein the formula comprises the following components: C. si, S, Mn, P, Ti, Sn, Sb and Fe, wherein the casting process comprises the steps of firstly, weighing raw materials; step two, melting the raw materials; step three, casting and molding; step four, cutting; step five, heat treatment; step six, physical and chemical detection; step seven, polishing and grinding; step eight, quality inspection; step nine, boxing and delivering goods; in the second step, a thermocouple is used for collecting temperature information, a composition curve is obtained through a thermal analyzer, and a spectrometer is used for detecting the composition of the alloy liquid; according to the invention, the original molten iron ingredient formula is improved, the fluidity of the molten iron is increased, the phenomenon of insufficient pouring is avoided, the manufacturing qualification rate of the gold-type bearing is greatly improved, and the utilization rate of the molten iron is improved; the invention improves the structure of the casting mould, adds the water cooling pipe of the mould and controls the temperature of the casting mould, thereby ensuring the quality of the casting.
Description
Technical Field
The invention relates to the technical field of bearing manufacturing, in particular to a formula of a gold bearing and a pouring process thereof.
Background
The gold mold casting is late in China, is difficult to perform batch production line operation, and is produced in large scale by few domestic manufacturers; the technical difficulty lies in solving the defects of sand casting, such as the mechanical strength, the elastic modulus, the processing precision and the like of a sample brand sand bearing which are far inferior to those of a gold bearing; after the gold mold casting is subjected to technical accumulation and precipitation for more than 20 years, the technology is mature and stable, and the requirement of mass production can be met;
the prior metal mold casting technology for the compressor bearing has the following defects: firstly, the molten iron is difficult to fill, and the casting is insufficient, so that the casting yield is low and is only 50% -60%; secondly, the temperature of the continuous operation die is too high, the quality of the casting is unstable, and the casting cost is increased.
Disclosure of Invention
The invention aims to provide a formula of a gold bearing and a pouring process thereof, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the formula of the gold type bearing comprises the following components: C. the alloy comprises Si, S, Mn, P, Ti, Sn, Sb and Fe in percentage by mass: 3.0-4.0% of C, 2.0-3.0% of Si, 0-0.15% of S, 0.50-1.1% of Mn, 0-0.4% of P, 0.05-0.15% of Ti, 0-0.2% of Sn, 0-0.1% of Sb and 90-96% of Fe.
Preferably, the mass percentage of each component is as follows: 3.5% C, 2.5% Si, 0.05% S, 0.5% Mn, 0.2% P, 0.05% Ti, 0.1% Sn, 0.05% Sb and 93.05% Fe.
A casting process of a gold type bearing comprises the steps of firstly, weighing raw materials; step two, melting the raw materials; step three, casting and molding; step four, cutting; step five, heat treatment; step six, physical and chemical detection; step seven, polishing and grinding; step eight, quality inspection; step nine, boxing and delivering goods;
in the first step, the sum of the mass percentages of the components is 1, and the mass percentages of the components are as follows: 3.0-4.0% of C, 2.0-3.0% of Si, 0-0.15% of S, 0.50-1.1% of Mn, 0-0.4% of P, 0.05-0.15% of Ti, 0-0.2% of Sn, 0-0.1% of Sb and 90-96% of Fe are weighed;
in the second step, the raw materials weighed in the first step are taken and added into a melting furnace to be melted into alloy liquid;
fully stirring the alloy liquid, standing for 2-4min, cleaning up floating slag, pouring the alloy liquid into a preheated bearing die after the molten iron components and the temperature are detected to be qualified, and separating the alloy liquid from the die after the alloy liquid in the die is cooled and formed to obtain a semi-finished bearing;
in the fourth step, the semi-finished bearing prepared in the third step is taken, and a cutting machine is used for cutting and removing a sprue riser;
in the fifth step, the semi-finished bearing processed in the fourth step is placed in a heat treatment furnace for heat treatment, and after heating and heat preservation are carried out for a certain time, the cooled semi-finished bearing is placed in a circulation box for standby;
in the sixth step, the semi-finished bearing cooled in the fifth step is sampled, the hardness, the strength and the matrix structure of the sample are detected, and qualified batches are fed into the next working procedure;
polishing the semi-finished bearing qualified in the inspection, and trimming and grinding a sprue riser of the semi-finished bearing to obtain a finished bearing;
in the eighth step, visual inspection is carried out on the appearance of the finished bearing, fluorescent magnetic powder inspection is carried out on the finished bearing qualified in the visual inspection, and the qualified bearing flows into the next procedure;
and in the ninth step, the finished bearings which are qualified in the eighth step are taken, cleaned, dried, rustproof, packaged in inner and outer bags, and finally packaged and delivered.
Preferably, in the second step, a thermocouple is used for acquiring temperature information, a composition curve is obtained through a thermal analyzer, and a spectrometer is used for detecting the composition of the alloy liquid.
Preferably, in the third step, the bearing mold comprises a mold body, a liquid injection port is formed in the upper surface of the mold body, a main runner is formed in the inner wall of the bottom end of the liquid injection port, a branch runner is formed in the interior of the mold body, the main runner is in conduction connection with the branch runner, a material ejection hole is formed in the branch runner, cavities are formed in two sides of the main runner, the cavities are formed in the top end of the branch runner, a pouring gate is formed in the inner wall of the bottom end of the cavity, the pouring gate is in conduction connection with the branch runner, an air exhaust port is formed in the inner wall of the top end of the cavity, and a water cooling pipe is arranged inside the mold body.
Preferably, the mold body includes, but is not limited to, an alloy cast iron mold, a copper alloy mold, and a cast steel mold.
Preferably, in the third step, the temperature of the molten iron is 1470-.
Preferably, in the fifth step, the heat treatment temperature is 880-900 ℃ and the time is 60-100 min.
Preferably, in the ninth step, the finished bearing is cleaned by a metal cleaning agent, and the antirust medium is metal antirust oil.
Compared with the prior art, the invention has the beneficial effects that: according to the invention, the original molten iron ingredient formula is improved, the fluidity of the molten iron is increased, the phenomenon of insufficient pouring is avoided, the manufacturing qualification rate of the gold-type bearing is greatly improved, and the utilization rate of the molten iron is improved; the invention improves the structure of the casting mould, adds the water cooling pipe of the mould and controls the temperature of the casting mould, thereby ensuring the quality of the casting.
Drawings
FIG. 1 is a process flow diagram of the present invention;
FIG. 2 is a front view of the cutting structure of the die body of the present invention;
in the figure: 1. a mold body; 10. a liquid injection port; 11. a main flow passage; 12. a shunt channel; 13. a gate; 14. a cavity; 15. an exhaust port; 16. a water-cooled tube; 17. and (6) material ejection holes.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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.
Referring to fig. 1-2, a technical solution provided by the present invention is:
example 1:
the formula of the gold type bearing comprises the following components: C. the alloy comprises Si, S, Mn, P, Ti, Sn, Sb and Fe in percentage by mass: 3.5% C, 2.5% Si, 0.05% S, 0.5% Mn, 0.2% P, 0.05% Ti, 0.1% Sn, 0.05% Sb and 93.05% Fe.
A casting process of a gold bearing comprises the steps of firstly, weighing raw materials; step two, melting the raw materials; step three, casting and molding; step four, cutting; step five, heat treatment; step six, physical and chemical detection; step seven, polishing and grinding; step eight, quality inspection; step nine, boxing and delivering;
in the first step, the sum of the mass percentages of the components is 1, and the mass percentages of the components are as follows: 3.5 percent of C, 2.5 percent of Si, 0.05 percent of S, 0.5 percent of Mn, 0.2 percent of P, 0.05 percent of Ti, 0.1 percent of Sn, 0.05 percent of Sb and 93.05 percent of Fe are weighed;
in the second step, the raw materials weighed in the first step are added into a melting furnace to be melted into alloy liquid, a thermocouple is used for acquiring temperature information, a composition curve is obtained through a thermal analyzer, and a spectrometer is used for detecting the composition of the alloy liquid;
fully stirring the alloy liquid, standing for 2min, cleaning up floating slag, pouring the floating slag into a preheated bearing mould, and separating the alloy liquid from the mould after the alloy liquid in the mould is cooled and formed to obtain a semi-finished bearing; the bearing mold comprises a mold body 1, a liquid injection port 10 is formed in the upper surface of the mold body 1, a main runner 11 is formed in the inner wall of the bottom end of the liquid injection port 10, a sub-runner 12 is formed in the mold body 1, the main runner 11 is in conduction connection with the sub-runner 12, a material ejection cavity 17 is formed in the sub-runner 12, cavities 14 are formed in two sides of the main runner 11, the cavities 14 are formed in the top ends of the sub-runners 12, a pouring gate 13 is formed in the inner wall of the bottom end of each cavity 14, the pouring gate 13 is in conduction connection with the sub-runner 12, an exhaust port 15 is formed in the inner wall of the top end of each cavity 14, a water cooling pipe 16 is arranged in the mold body 1, and the mold body 1 comprises but is not limited to an alloy cast iron mold, a copper alloy mold and a cast steel mold; the temperature of molten iron is 1470 ℃, and the die is cooled to 170 ℃ by water;
in the fourth step, the semi-finished bearing prepared in the third step is taken, and a cutting machine is used for cutting and removing a sprue riser;
in the fifth step, the semi-finished bearing processed in the fourth step is placed in a heat treatment furnace for heat treatment, and after heating and heat preservation are carried out for a certain time, the cooled semi-finished bearing is placed in a circulation box for standby; wherein the heat treatment temperature is 880 ℃, and the heat preservation time is 60 min;
in the sixth step, the semi-finished bearing cooled in the fifth step is sampled, the hardness, the strength and the matrix structure of the sample are detected, and qualified batches are fed into the next working procedure;
polishing the semi-finished bearing qualified in the inspection, and trimming and grinding a sprue riser of the semi-finished bearing to obtain a finished bearing;
in the eighth step, visual inspection is carried out on the appearance of the finished bearing, fluorescent magnetic powder inspection is carried out on the finished bearing qualified in the visual inspection, and the qualified bearing flows into the next procedure;
in the ninth step, the finished bearings which are qualified in the eighth step are taken, cleaned, dried, rustproof, packaged in an inner package and an outer package, and finally packaged and delivered; wherein, the finished bearing is cleaned by a metal cleaning agent, and the antirust medium is metal antirust oil.
Example 2:
the formula of the gold type bearing comprises the following components: C. the alloy comprises Si, S, Mn, P, Ti, Sn, Sb and Fe in percentage by mass: 3.0% C, 2.0% Si, 0.1% S, 1.0% Mn, 0.3% P, 0.1% Ti, 0.2% Sn, 0.1% Sb and 93.2% Fe.
A casting process of a gold bearing comprises the steps of firstly, weighing raw materials; step two, melting the raw materials; step three, casting and molding; step four, cutting; step five, heat treatment; step six, physical and chemical detection; step seven, polishing and grinding; step eight, quality inspection; step nine, boxing and delivering;
in the first step, the sum of the mass percentages of the components is 1, and the mass percentages of the components are as follows: 3.0% of C, 2.0% of Si, 0.1% of S, 1.0% of Mn, 0.3% of P, 0.1% of Ti, 0.2% of Sn, 0.1% of Sb and 93.2% of Fe are weighed;
in the second step, the raw materials weighed in the first step are taken and added into a melting furnace to be melted into alloy liquid, a thermocouple is used for acquiring temperature information, a composition curve is obtained through a thermal analyzer, and a spectrometer is used for detecting the composition of the alloy liquid;
fully stirring the alloy liquid, standing for 2min, cleaning floating slag, pouring the alloy liquid into a preheated bearing mould, and separating the alloy liquid from the mould after the alloy liquid in the mould is cooled and formed to obtain a semi-finished bearing; the bearing mold comprises a mold body 1, a liquid injection port 10 is formed in the upper surface of the mold body 1, a main runner 11 is formed in the inner wall of the bottom end of the liquid injection port 10, a sub-runner 12 is formed in the mold body 1, the main runner 11 is in conduction connection with the sub-runner 12, a material ejection cavity 17 is formed in the sub-runner 12, cavities 14 are formed in two sides of the main runner 11, the cavities 14 are formed in the top ends of the sub-runners 12, a pouring gate 13 is formed in the inner wall of the bottom end of each cavity 14, the pouring gate 13 is in conduction connection with the sub-runner 12, an exhaust port 15 is formed in the inner wall of the top end of each cavity 14, a water cooling pipe 16 is arranged in the mold body 1, and the mold body 1 comprises but is not limited to an alloy cast iron mold, a copper alloy mold and a cast steel mold; the temperature of molten iron is 1470 ℃, and the die is cooled to 170 ℃ by water;
in the fourth step, the semi-finished bearing prepared in the third step is taken, and a cutting machine is used for cutting and removing a sprue riser;
in the fifth step, the semi-finished bearing processed in the fourth step is placed in a heat treatment furnace for heat treatment, and after heating and heat preservation are carried out for a certain time, the cooled semi-finished bearing is placed in a circulation box for standby; wherein the heat treatment temperature is 880 ℃, and the heat preservation time is 60 min;
in the sixth step, the semi-finished bearing cooled in the fifth step is sampled, the hardness, the strength and the matrix structure of the sample are detected, and qualified batches are fed into the next working procedure;
polishing the semi-finished bearing qualified in the inspection, and trimming and grinding a sprue riser of the semi-finished bearing to obtain a finished bearing;
in the eighth step, visual inspection is carried out on the appearance of the finished bearing, fluorescent magnetic powder inspection is carried out on the finished bearing qualified in the visual inspection, and the qualified bearing flows into the next procedure;
in the ninth step, the finished bearings which are qualified in the eighth step are taken, cleaned, dried, rustproof, internally packaged and externally packaged, and finally packaged and delivered; wherein, the finished bearing is cleaned by a metal cleaning agent, and the antirust medium is metal antirust oil.
Example 3:
the formula of the gold type bearing comprises the following components: C. the alloy comprises Si, S, Mn, P, Ti, Sn, Sb and Fe in percentage by mass: 4.0% C, 3.0% Si, 0.15% S, 0.5% Mn, 0.4% P, 0.15% Ti, 0.15% Sn, 0.1% Sb and 91.55% Fe.
A casting process of a gold bearing comprises the steps of firstly, weighing raw materials; step two, melting the raw materials; step three, casting and molding; step four, cutting; step five, heat treatment; step six, physical and chemical detection; step seven, polishing and grinding; step eight, quality inspection; step nine, boxing and delivering goods;
in the first step, the sum of the mass percentages of the components is 1, and the mass percentages of the components are as follows: weighing 4.0% of C, 3.0% of Si, 0.15% of S, 0.5% of Mn, 0.4% of P, 0.15% of Ti, 0.15% of Sn, 0.1% of Sb and 91.55% of Fe;
in the second step, the raw materials weighed in the first step are added into a melting furnace to be melted into alloy liquid, a thermocouple is used for acquiring temperature information, a composition curve is obtained through a thermal analyzer, and a spectrometer is used for detecting the composition of the alloy liquid;
fully stirring the alloy liquid, standing for 2min, cleaning up floating slag, pouring the floating slag into a preheated bearing mould, and separating the alloy liquid from the mould after the alloy liquid in the mould is cooled and formed to obtain a semi-finished bearing; the bearing mold comprises a mold body 1, a liquid injection port 10 is formed in the upper surface of the mold body 1, a main runner 11 is formed in the inner wall of the bottom end of the liquid injection port 10, a sub-runner 12 is formed in the mold body 1, the main runner 11 is in conduction connection with the sub-runner 12, a material ejection cavity 17 is formed in the sub-runner 12, cavities 14 are formed in two sides of the main runner 11, the cavities 14 are formed in the top ends of the sub-runners 12, pouring gates 13 are formed in the inner wall of the bottom end of the cavities 14, the pouring gates 13 are in conduction connection with the sub-runner 12, exhaust ports 15 are formed in the inner wall of the top end of each cavity 14, a water cooling pipe 16 is arranged in the mold body 1, and the mold body 1 comprises but not limited to an alloy cast iron mold, a copper alloy mold and a cast steel mold; the temperature of molten iron is 1470 ℃, and the die is cooled to 170 ℃ by water;
in the fourth step, the semi-finished bearing prepared in the third step is taken, and a cutting machine is used for cutting and removing a sprue riser;
in the fifth step, the semi-finished bearing processed in the fourth step is placed in a heat treatment furnace for heat treatment, and after heating and heat preservation are carried out for a certain time, the cooled semi-finished bearing is placed in a circulation box for standby; wherein the heat treatment temperature is 880 ℃, and the heat preservation time is 60 min;
in the sixth step, the semi-finished bearing cooled in the fifth step is sampled, the hardness, the strength and the matrix structure of the sample are detected, and qualified batches are fed into the next working procedure;
polishing the semi-finished bearing qualified in the inspection, and trimming and grinding a sprue riser of the semi-finished bearing to obtain a finished bearing;
in the eighth step, visual inspection is carried out on the appearance of the finished bearing, fluorescent magnetic powder inspection is carried out on the finished bearing qualified in the visual inspection, and the qualified bearing flows into the next procedure;
in the ninth step, the finished bearings which are qualified in the eighth step are taken, cleaned, dried, rustproof, packaged in an inner package and an outer package, and finally packaged and delivered; wherein, the finished bearing is cleaned by a metal cleaning agent, and the antirust medium is metal antirust oil.
The properties of the examples are compared in the following table:
| example 1 | Example 2 | Example 3 | |
| C/％ | 3.5 | 3.0 | 4.0 |
| Si/％ | 2.5 | 2.0 | 3.0 |
| S/％ | 0.05 | 0.1 | 0.15 |
| Mn/％ | 0.5 | 1.0 | 0.5 |
| P/％ | 0.2 | 0.3 | 0.4 |
| Ti/％ | 0.05 | 0.1 | 0.15 |
| Sn/％ | 0.1 | 0.2 | 0.15 |
| Sb/％ | 0.05 | 0.1 | 0.1 |
| Fe/％ | 93.05 | 93.2 | 91.55 |
Based on the above, when the bearing mold is used for casting, firstly, the mold body 1 is preheated, then, the prepared alloy liquid is injected from the liquid injection port 10, flows into the branch runner 12 through the main runner 11, enters the cavity 14 through the pouring gate 13, and after the casting is sufficient, the cooling liquid is introduced through the water cooling pipe 16, and the bearing mold is cooled and formed, wherein the air exhaust port 15 is used for exhausting air, and the material ejecting cavity 17 is used for ejecting materials after the mold is opened; according to the invention, elements such as C, Si, S, Mn, P, Ti, Sn and Sb are added into the molten iron, so that the fluidity of the molten iron is improved, the phenomenon of insufficient pouring is avoided, the utilization rate of the molten iron is improved, and the qualification rate of the manufactured bearing reaches 95%; the invention improves the operation mould, the water cooling temperature of the mould is controllable at the temperature of 110-; meanwhile, the mechanical strength of the bearing is improved, the good processing performance can be met, the tensile strength and the elastic modulus are improved, and the service life of the compressor is prolonged.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (9)
1. The formula of the gold type bearing comprises the following components: C. si, S, Mn, P, Ti, Sn, Sb and Fe, characterized in that: the mass percentage of each component is as follows: 3.0-4.0% of C, 2.0-3.0% of Si, 0-0.15% of S, 0.50-1.1% of Mn, 0-0.4% of P, 0.05-0.15% of Ti, 0-0.2% of Sn, 0-0.1% of Sb and 90-96% of Fe.
2. The formulation of a gold bearing of claim 1, wherein: the weight percentage of each component is as follows: 3.5% C, 2.5% Si, 0.05% S, 0.5% Mn, 0.2% P, 0.05% Ti, 0.1% Sn, 0.05% Sb and 93.05% Fe.
3. A casting process of a gold type bearing comprises the steps of firstly, weighing raw materials; step two, melting the raw materials; step three, casting and molding; step four, cutting; step five, heat treatment; step six, physical and chemical detection; step seven, polishing and grinding; step eight, quality inspection; step nine, boxing and delivering goods; the method is characterized in that:
in the first step, the sum of the mass percentages of the components is 1, and the mass percentages of the components are as follows: 3.0-4.0% of C, 2.0-3.0% of Si, 0-0.15% of S, 0.50-1.1% of Mn, 0-0.4% of P, 0.05-0.15% of Ti, 0-0.2% of Sn, 0-0.1% of Sb and 90-96% of Fe are weighed;
in the second step, the raw materials weighed in the first step are taken and added into a melting furnace to be melted into alloy liquid;
fully stirring the alloy liquid, standing for 2-4min, cleaning up floating slag, pouring the alloy liquid into a preheated bearing mold after the molten iron components and the temperature are detected to be qualified, and separating the alloy liquid from the mold after the alloy liquid in the mold is cooled and formed to obtain a semi-finished bearing;
in the fourth step, the semi-finished bearing prepared in the third step is taken, and a cutting machine is used for cutting and removing a sprue riser;
in the fifth step, the semi-finished bearing processed in the fourth step is placed in a heat treatment furnace for heat treatment, and after heating and heat preservation are carried out for a certain time, the cooled semi-finished bearing is placed in a circulation box for standby;
in the sixth step, the semi-finished bearing cooled in the fifth step is sampled, the hardness, the strength and the matrix structure of the sample are detected, and qualified batches are fed into the next working procedure;
polishing the semi-finished bearing qualified in the inspection, and trimming and grinding a sprue riser of the semi-finished bearing to obtain a finished bearing;
in the eighth step, visual inspection is carried out on the appearance of the finished bearing, fluorescent magnetic powder inspection is carried out on the finished bearing qualified in the visual inspection, and the qualified bearing flows into the next procedure;
and in the ninth step, the finished bearings which are qualified in the eighth step are taken, cleaned, dried, rustproof, packaged in inner and outer bags, and finally packaged and delivered.
4. The casting process of the gold type bearing according to claim 3, wherein: in the second step, a thermocouple is used for collecting temperature information, a composition curve is obtained through a thermal analyzer, and a spectrometer is used for detecting the composition of the alloy liquid.
5. The casting process of the gold type bearing according to claim 3, wherein: in the third step, the bearing mold comprises a mold body (1), a liquid injection port (10) is formed in the upper surface of the mold body (1), a main runner (11) is formed in the inner wall of the bottom end of the liquid injection port (10), a branch runner (12) is formed in the mold body (1), the main runner (11) is in conduction connection with the branch runner (12), a material ejection hole (17) is formed in the branch runner (12), cavities (14) are formed in the two sides of the main runner (11), the cavities (14) are arranged on the top end of the branch runner (12), a pouring gate (13) is formed in the inner wall of the bottom end of the cavity (14), the pouring gate (13) is in conduction connection with the branch runner (12), an exhaust port (15) is formed in the inner wall of the top end of the cavity (14), and a water cooling pipe (16) is arranged inside the mold body (1).
6. The casting process of the gold type bearing according to claim 5, wherein: the die body (1) includes, but is not limited to, an alloy cast iron die, a copper alloy die, and a cast steel die.
7. The casting process of the gold type bearing according to claim 3, wherein: in the third step, the temperature of the molten iron is 1470 ℃ to 1510 ℃, and the temperature of the mold is cooled to 110 ℃ to 240 ℃.
8. The casting process of the gold type bearing according to claim 3, wherein: in the fifth step, the heat treatment temperature is 880-900 ℃, and the time is 60-100 min.
9. The casting process of the gold type bearing according to claim 3, wherein: in the ninth step, the finished bearing is cleaned by a metal cleaning agent, and an antirust medium is metal antirust oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210468117.7A CN114737108A (en) | 2022-04-29 | 2022-04-29 | Formula of gold bearing and casting process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210468117.7A CN114737108A (en) | 2022-04-29 | 2022-04-29 | Formula of gold bearing and casting process thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114737108A true CN114737108A (en) | 2022-07-12 |
Family
ID=82285989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210468117.7A Pending CN114737108A (en) | 2022-04-29 | 2022-04-29 | Formula of gold bearing and casting process thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114737108A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10328812A (en) * | 1997-06-06 | 1998-12-15 | Daihatsu Motor Co Ltd | Gravitational casting method and gravitational casting device |
| CN201164900Y (en) * | 2008-02-29 | 2008-12-17 | 肇庆市广盛铸业有限公司 | Composite metal mould |
| CN102115843A (en) * | 2010-01-05 | 2011-07-06 | 罗云 | Vermicular graphite cast iron for producing brake drum of high-speed and heavy-load automobile |
| CN104404360A (en) * | 2014-10-23 | 2015-03-11 | 陕西华安铸铁型材有限公司 | Large diameter grey cast iron section bar material and preparation method thereof |
| CN109722592A (en) * | 2019-02-20 | 2019-05-07 | 河北恒工机械装备科技有限公司 | Antimony Ti Alloying improves big cross section gray cast iron sensibility profile and its manufacturing method |
| CN109909453A (en) * | 2019-04-26 | 2019-06-21 | 郑石竹 | A kind of hot core dead head casting die |
| CN110565005A (en) * | 2019-09-06 | 2019-12-13 | 郴州市鼎新铸造有限责任公司 | Production process method of low-temperature ductile iron casting |
| CN110894582A (en) * | 2019-12-10 | 2020-03-20 | 西安工业大学 | High-strength and high-heat-conductivity vermicular graphite cast iron and preparation method thereof |
-
2022
- 2022-04-29 CN CN202210468117.7A patent/CN114737108A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10328812A (en) * | 1997-06-06 | 1998-12-15 | Daihatsu Motor Co Ltd | Gravitational casting method and gravitational casting device |
| CN201164900Y (en) * | 2008-02-29 | 2008-12-17 | 肇庆市广盛铸业有限公司 | Composite metal mould |
| CN102115843A (en) * | 2010-01-05 | 2011-07-06 | 罗云 | Vermicular graphite cast iron for producing brake drum of high-speed and heavy-load automobile |
| CN104404360A (en) * | 2014-10-23 | 2015-03-11 | 陕西华安铸铁型材有限公司 | Large diameter grey cast iron section bar material and preparation method thereof |
| CN109722592A (en) * | 2019-02-20 | 2019-05-07 | 河北恒工机械装备科技有限公司 | Antimony Ti Alloying improves big cross section gray cast iron sensibility profile and its manufacturing method |
| CN109909453A (en) * | 2019-04-26 | 2019-06-21 | 郑石竹 | A kind of hot core dead head casting die |
| CN110565005A (en) * | 2019-09-06 | 2019-12-13 | 郴州市鼎新铸造有限责任公司 | Production process method of low-temperature ductile iron casting |
| CN110894582A (en) * | 2019-12-10 | 2020-03-20 | 西安工业大学 | High-strength and high-heat-conductivity vermicular graphite cast iron and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2017140099A1 (en) | Preparation method for bright high-accuracy oxygen-free copper bar | |
| CN104972063B (en) | Method for manufacturing wax mould for precision investment casting | |
| CN105964912A (en) | Crankshaft casting technology | |
| CN104862552A (en) | Novel aluminum alloy and preparation method thereof | |
| CN106513564A (en) | Bearing cover casting process | |
| WO2018072368A1 (en) | Rare earth-copper alloy glass mold and preparation method therefor | |
| CN107052226A (en) | A kind of end cap casting technique | |
| CN114737108A (en) | Formula of gold bearing and casting process thereof | |
| KR20080036624A (en) | Process for producing metal-containing castings, and associated apparatus | |
| CN112828245B (en) | Manufacturing method and manufacturing die for producing threaded sleeve of cylinder of plastic extruding machine | |
| CN109355580A (en) | A kind of novel plastic mould steel SPM and preparation method thereof | |
| CN105665649A (en) | Casting technology for high-strength bearing connector | |
| CN110819862A (en) | Manufacturing process of magnesium alloy motor shell | |
| CN113234968A (en) | High-performance uniform aluminum alloy ingot and production method thereof | |
| CN103341594B (en) | A kind of casting method of brake shell | |
| CN110541095A (en) | Preparation method of high-performance aluminum alloy automobile parts | |
| CN113502408A (en) | High-conductivity copper alloy containing tellurium and nickel and preparation method thereof | |
| CN114645151A (en) | High-strength high-conductivity copper alloy and production method thereof | |
| CN114558988B (en) | High-heat-conductivity copper alloy glass mold bottom and preparation method thereof | |
| CN108300937A (en) | A kind of steel ingot and its processing technology | |
| CN112030016B (en) | High-tungsten high-cobalt-nickel alloy and smelting method and shaped charge liner thereof | |
| CN115354189B (en) | Copper-nickel-chromium-silicon material for injection mold and blow mold and preparation method thereof | |
| CN112371923A (en) | Precision casting for agricultural harvesting and bundling machine | |
| CN201529747U (en) | Heat-resistant alloy cast ball mould | |
| CN114130957A (en) | High-yield low-energy-consumption horizontal casting process |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220712 |