CN109536853B - Solar automatic rotor - Google Patents
Solar automatic rotor Download PDFInfo
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- CN109536853B CN109536853B CN201811501431.0A CN201811501431A CN109536853B CN 109536853 B CN109536853 B CN 109536853B CN 201811501431 A CN201811501431 A CN 201811501431A CN 109536853 B CN109536853 B CN 109536853B
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
- B22C9/04—Use of lost patterns
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The invention relates to a rotor, in particular to a solar automatic rotor, and belongs to the technical field of part materials. The solar automatic rotor is made of stainless steel, and the stainless steel comprises the following components in percentage by mass: c: less than or equal to 0.07 percent, Si: less than or equal to 1.0 percent, Mn: less than or equal to 1.2 percent, Ni: 3 to 5 percent of P, less than or equal to 0.04 percent of S, 15 to 17.5 percent of Cr, 0.15 to 0.45 percent of Nb, 3 to 5 percent of Cu and the balance of Fe. The solar automatic rotor is made of the stainless steel material containing the components, wherein the component of Cr is 15-17.5%, so that the stainless steel is high-chromium steel, wherein the chromium can obviously improve the strength, the hardness and the wear resistance, but simultaneously reduce the plasticity and the toughness. Chromium can improve the oxidation resistance and corrosion resistance of steel, so that the chromium is an important alloy element of stainless steel and heat-resistant steel.
Description
Technical Field
The invention relates to a rotor, in particular to a solar automatic rotor, and belongs to the technical field of part materials.
Background
At present, a plurality of outdoor or roof solar panels are fixed, only the sun can be irradiated by the sun when rising and at noon, the solar energy is converted into heat energy, the communication with clients and the user experience of the product by guests are required, the solar panels are expected to be automatically adjusted along with the rising and falling of the sun, the heat energy is absorbed by the sun forever, and therefore huge challenges are provided for the structure and the casting forming of the product, the product is analyzed by a research and development team for multiple times through applying a simulation software, the optimal casting process is determined, the optimal casting head scheme is selected, the optimal processing technology is selected to ensure low noise, high strength and good corrosion resistance of the product in the rotating process, and meanwhile, the automatic conversion of the panels is realized.
Disclosure of Invention
The invention aims at the problems in the prior art and provides a solar automatic rotor which has the characteristics of low noise, high strength and good corrosion resistance in the rotating process.
The purpose of the invention is realized by the following technical scheme: the solar automatic rotor is made of stainless steel, and the stainless steel comprises the following components in percentage by mass: c: less than or equal to 0.07 percent, Si: less than or equal to 1.0 percent, Mn: less than or equal to 1.2 percent, Ni: 3 to 5 percent of P, less than or equal to 0.04 percent of S, 15 to 17.5 percent of Cr, 0.15 to 0.45 percent of Nb, 3 to 5 percent of Cu and the balance of Fe.
The solar automatic rotor is made of the stainless steel material containing the components, wherein the component of Cr is 15-17.5%, so that the stainless steel is high-chromium steel, wherein the chromium can obviously improve the strength, the hardness and the wear resistance, but simultaneously reduce the plasticity and the toughness. Chromium can improve the oxidation resistance and corrosion resistance of steel, so that the chromium is an important alloy element of stainless steel and heat-resistant steel.
In the solar automatic rotor of the present invention, Ni is added to alloy steel, which can improve solid solution strengthening and hardenability, and at the same time, refine ferrite grains, improve the plasticity and toughness, especially low temperature toughness, of steel under the same strength, and strengthen ferrite and refine and increase pearlite, thereby improving the strength of alloy steel. Meanwhile, the fatigue resistance of the steel can be improved, and the sensitivity of the alloy steel to gaps is reduced.
While Nb can refine grains and reduce the overheating sensitivity and the temper brittleness of steel, and improve the strength, but the brittleness and the toughness of stainless steel are reduced due to the excessive Nb content, so that the Nb content is controlled to be the content. The Cu can improve the strength and the toughness of the stainless steel, particularly the atmospheric corrosion, and a certain amount of Cu is added into the stainless steel material.
In the above solar automatic rotor, the stainless steel further comprises 0.12-0.24% of zinc oxide whiskers, and the zinc oxide whiskers are tetragonal zinc oxide whiskers. The invention adds the four-foot zinc oxide whisker into the stainless steel material, the four-foot zinc oxide whisker has the double functions of bearing load transfer and bridging and debonding and generating crack phenomena among the foreign materials of the brittle reinforcement body, and when the dosage is less, the four-foot zinc oxide whisker shows the functions of bearing load transfer and bridging; after a certain amount of the zinc oxide whisker is exceeded, the phenomena of debonding and cracking between the anisotropic materials are generated to show a synergistic effect, but the performance of the anisotropic materials is reduced, so the zinc oxide whisker has stronger requirements on the addition amount of the zinc oxide whisker. Meanwhile, Van der Waals force in the four-foot-shaped zinc oxide crystal whisker is combined with metal atoms, an effective interface layer is formed between the crystal whisker and a matrix, a bridging effect is achieved, and the strengthening and toughening effects of the four-foot-shaped zinc oxide crystal whisker are facilitated.
Preferably, the aspect ratio of the zinc oxide whisker is 10-20 nm.
Another object of the present invention is to provide a method for manufacturing the above solar automatic rotor, the method comprising the steps of:
melting: weighing raw materials for preparing the solar automatic rotor and melting the raw materials into stainless steel water;
pressing a wax piece: injecting the molten wax into a wax piece mold, cooling and taking out the wax piece;
and (3) tree formation: welding a wax piece on a wax rod;
preparing a shell mold: coating the surface of the wax piece with the micro-fine sand particle slurry, spraying sand, coating slurry again, repeating for four times, and finally air-drying the shell mold in the environment with the constant temperature of 25-30 ℃;
dewaxing: carrying out dewaxing treatment and roasting treatment on the shell mold;
precision casting: pouring the stainless steel water into a shell mold, and cooling and forming;
shell shaking: and (5) vibrating and breaking the shell mold to fall off to obtain the solar automatic rotor.
In the preparation method of the solar automatic rotor, the temperature of the injection wax liquid is 53-55 ℃, the time is 20-22s, and the pressure is 2.0-2.5 MPa. The invention adopts the temperature, time and pressure for wax injection, and can ensure the fluidity of the wax liquid under the conditions. If the temperature is too low, the wax liquid is not easy to fill the wax mould, so that the wax mould is incomplete; on the contrary, the wax liquid with too high temperature can cause the wax liquid to overflow from the rubber mold gap or overflow from the wax injection port, and flash or scald fingers are easily formed.
In the preparation method of the solar automatic rotor, the indoor constant temperature and humidity are kept during the wax liquid casting process, the indoor temperature is 20-26 ℃, and the indoor humidity is less than or equal to 55%.
In the preparation method of the solar automatic rotor, the graphite layer is laid after the trees are assembled before the shell mold is made. In the solar automatic rotor, the Ni content is 3-5%, and oxygen in the atmosphere is easy to react with high-temperature molten iron in the casting process, so that graphite layer laying treatment is carried out before shell molding, and due to the special properties of high melting point, small thermal expansion coefficient and the like of graphite, the problems of shell cracking and the like are not worried about during shell high-temperature roasting, and the air permeability of the shell is increased. After the shell is poured by high-temperature molten steel, graphite is continuously combusted due to high-temperature diffusion, so that a good reducing atmosphere is established, oxygen is prevented from being immersed, and an anti-oxidation effect is really achieved. Preferably, the graphite layer has a thickness of 0.8 to 1 mm.
In the preparation method of the solar automatic rotor, the slurry dipping and drying time of the first layer is 8-10h, the slurry dipping and drying time of the second layer is more than or equal to 8h, the slurry dipping and drying time of the third layer is more than or equal to 12h, and the slurry dipping and drying time of the fourth layer is more than or equal to 14 h. The invention limits the slurry dipping time, and aims to ensure that the preparation process has sufficient slurry dipping and drying time, ensure that the formwork is sufficiently dried and improve the air permeability of the formwork.
In the above method for preparing the solar automatic rotor, the baking temperature of the mold shell is 1000-1100 ℃. The roasting temperature of the mold shell plays a role in the invention, the aim of the roasting of the mold shell is to remove volatile matters such as moisture, residual wax materials, salt and the like in the mold shell, so that the mold shell has good air permeability during casting, and thermophysical and physicochemical reactions are carried out between the binding agent, the refractory material and other substances, so that the phase composition and the microstructure are changed, the high-temperature strength is established, and the temperature difference between the liquid alloy and the mold shell is reduced, thereby improving the mold filling capacity. Thus, too low a temperature does not achieve the above purpose, but too high a temperature can lead to brittle fracture of the formwork.
In the preparation method of the solar automatic rotor, the casting temperature is 1500-1550 ℃, and the casting time is 10-20 min. The proper casting temperature has important significance for ensuring the quality of the casting. The fluidity is good when the casting temperature is high, but the shrinkage of the casting is increased due to overhigh casting temperature, the shrinkage cavity defect is generated, and the defects of heat crack, air holes and the like are easily generated on the casting; if the casting temperature is too low, the fluidity of the metal liquid is deteriorated, and defects such as cold shut, insufficient casting and the like are generated. The present invention thus employs the above-described casting temperatures. The pouring speed is closely related to the time for filling the casting mold, the pouring speed is high, the casting mold shell can be better filled with the alloy liquid, all parts of the casting are uniform in temperature, metal oxidation is reduced, the simultaneous solidification of the casting is facilitated, and the defects of splashing, air holes and the like are generated at an excessive speed; the pouring speed is low, the temperature difference of all parts of the casting is obvious, feeding is facilitated, the shrinkage porosity and shrinkage cavity defects of the casting are avoided, sequential solidification of the casting is facilitated, the casting is not too slow, and otherwise the defects of cold shut, insufficient pouring and the like are easily caused. Therefore, the control of the casting speed is a key link for obtaining high-quality castings.
Compared with the prior art, the invention has the following advantages:
the solar automatic rotor is made of the stainless steel material containing the components, wherein the component of Cr is 15-17.5%, so that the stainless steel is high-chromium steel, wherein the chromium can obviously improve the strength, the hardness and the wear resistance, but simultaneously reduce the plasticity and the toughness. Chromium can improve the oxidation resistance and corrosion resistance of steel, so that the chromium is an important alloy element of stainless steel and heat-resistant steel.
Detailed Description
The following are specific examples of the present invention and further describe the technical solutions of the present invention, but the present invention is not limited to these examples.
Example 1
Melting: weighing raw materials for preparing the solar automatic rotor and melting the raw materials into stainless steel water; the solar automatic rotor is made of stainless steel, and the components of the stainless steel are as follows: c: 0.03%, Si: 0.8%, Mn: 0.9%, Ni: 3 percent of zinc oxide, 0.02 percent of P, 0.01 percent of S, 15 percent of Cr, 0.15 percent of Nb, 3 percent of Cu, and the balance of Fe and inevitable impurities, and also comprises 0.12 percent of zinc oxide whiskers, wherein the zinc oxide whiskers are tetragonal zinc oxide whiskers;
pressing a wax piece: injecting the molten wax into a wax piece mold, cooling and taking out the wax piece; the temperature of the wax injection liquid is 53 ℃, the time is 20s, the pressure is 2.0MPa, the indoor constant temperature and humidity are kept in the process of casting the wax liquid, the indoor temperature is 20 ℃, and the indoor humidity is 35%;
and (3) tree formation: welding a wax piece on a wax rod; paving a graphite layer after assembling a tree before making a shell mould, wherein the thickness of the graphite layer is 0.8 mm;
preparing a shell mold: coating the surface of the wax piece with the micro-fine sand particle slurry, spraying sand, coating slurry again, repeating for four times, and finally air-drying the shell mold in a constant temperature environment of 25 ℃; the first layer of slurry dipping and drying time is 8 hours, the second layer of slurry dipping and drying time is 9 hours, the third layer of slurry dipping and drying time is 13 hours, and the fourth layer of slurry dipping and drying time is 15 hours;
dewaxing: carrying out dewaxing treatment and roasting treatment on the shell mold;
precision casting: pouring the stainless steel water into a shell mold, and cooling and forming; the roasting temperature of the mould shell is 1000 ℃, the casting temperature is 1500 ℃, and the casting time is 10 min;
shell shaking: and (5) vibrating and breaking the shell mold to fall off to obtain the solar automatic rotor.
Example 2
Melting: weighing raw materials for preparing the solar automatic rotor and melting the raw materials into stainless steel water; the solar automatic rotor is made of stainless steel, and the components of the stainless steel are as follows: c: 0.04%, Si: 0.7%, Mn: 1.1%, Ni: 3.5 percent of zinc oxide, 0.01 percent of P, 0.02 percent of S, 15.5 percent of Cr, 0.25 percent of Nb, 3.5 percent of Cu and the balance of Fe and inevitable impurities, and also comprises 0.16 percent of zinc oxide whiskers, wherein the zinc oxide whiskers are tetragonal zinc oxide whiskers;
pressing a wax piece: injecting the molten wax into a wax piece mold, cooling and taking out the wax piece; the temperature of the wax injection liquid is 53.5 ℃, the time is 2.5s, the pressure is 2.1MPa, the indoor constant temperature and humidity are kept in the process of casting the wax liquid, the indoor temperature is 21 ℃, and the indoor humidity is 35%;
and (3) tree formation: welding a wax piece on a wax rod; paving a graphite layer after assembling a tree before making a shell mould, wherein the thickness of the graphite layer is 0.85 mm;
preparing a shell mold: coating the surface of the wax piece with the micro-fine sand particle slurry, spraying sand, coating slurry again, repeating for four times, and finally air-drying the shell mold in the environment with the constant temperature of 26 ℃; the drying time of the first layer of slurry dipping is 8.5h, the drying time of the second layer of slurry dipping is 9h, the drying time of the third layer of slurry dipping is 14h, and the drying time of the fourth layer of slurry dipping is 17 h;
dewaxing: carrying out dewaxing treatment and roasting treatment on the shell mold;
precision casting: pouring the stainless steel water into a shell mold, and cooling and forming; the mould shell roasting temperature is 1020 ℃, the casting temperature is 1510 ℃, and the casting time is 12 min;
shell shaking: and (5) vibrating and breaking the shell mold to fall off to obtain the solar automatic rotor.
Example 3
Melting: weighing raw materials for preparing the solar automatic rotor and melting the raw materials into stainless steel water; the solar automatic rotor is made of stainless steel, and the components of the stainless steel are as follows: c: 0.02%, Si: 0.9%, Mn: 1.1%, Ni: 4 percent of zinc oxide, 0.01 percent of P, 0.00 percent of S, 16 percent of Cr, 0.29 percent of Nb, 4 percent of Cu, and the balance of Fe and inevitable impurities, and also comprises 0.18 percent of zinc oxide whiskers, wherein the zinc oxide whiskers are tetragonal zinc oxide whiskers;
pressing a wax piece: injecting the molten wax into a wax piece mold, cooling and taking out the wax piece; the temperature of the wax injection liquid is 54 ℃, the time is 21s, the pressure is 2.3MPa, the indoor constant temperature and humidity are kept in the process of casting the wax liquid, the indoor temperature is 23 ℃, and the indoor humidity is 25%;
and (3) tree formation: welding a wax piece on a wax rod; paving a graphite layer after assembling a tree before making a shell mould, wherein the thickness of the graphite layer is 0.9 mm;
preparing a shell mold: coating the surface of the wax piece with the micro-fine sand particle slurry, spraying sand, coating slurry again, repeating for four times, and finally air-drying the shell mold in the environment with the constant temperature of 27 ℃; the first layer of slurry dipping and drying time is 9 hours, the second layer of slurry dipping and drying time is 10 hours, the third layer of slurry dipping and drying time is 14 hours, and the fourth layer of slurry dipping and drying time is 18 hours;
dewaxing: carrying out dewaxing treatment and roasting treatment on the shell mold;
precision casting: pouring the stainless steel water into a shell mold, and cooling and forming; the mould shell roasting temperature is 1050 ℃, the casting temperature is 1525 ℃, and the casting time is 15 min;
shell shaking: and (5) vibrating and breaking the shell mold to fall off to obtain the solar automatic rotor.
Example 4
Melting: weighing raw materials for preparing the solar automatic rotor and melting the raw materials into stainless steel water; the solar automatic rotor is made of stainless steel, and the components of the stainless steel are as follows: c: 0.02%, Si: 0.09%, Mn: 0.05%, Ni: 4.5 percent of zinc oxide, 0.01 percent of P, 0.02 percent of S, 16.7 percent of Cr, 0.4 percent of Nb, 4.5 percent of Cu and the balance of Fe and inevitable impurities, and also comprises 0.22 percent of zinc oxide whiskers, wherein the zinc oxide whiskers are tetragonal zinc oxide whiskers;
pressing a wax piece: injecting the molten wax into a wax piece mold, cooling and taking out the wax piece; the temperature of the wax injection liquid is 54.5 ℃, the time is 21.5s, the pressure is 2.4MPa, the indoor constant temperature and humidity are kept in the process of casting the wax liquid, the indoor temperature is 25 ℃, and the indoor humidity is 25%;
and (3) tree formation: welding a wax piece on a wax rod; paving a graphite layer after assembling a tree before making a shell mold, wherein the thickness of the graphite layer is 0.95 mm;
preparing a shell mold: coating the surface of the wax piece with the micro-fine sand particle slurry, spraying sand, coating slurry again, repeating for four times, and finally air-drying the shell mold in the environment with the constant temperature of 29 ℃; the first layer of slurry dipping and drying time is 9.5h, the second layer of slurry dipping and drying time is 12h, the third layer of slurry dipping and drying time is 15h, and the fourth layer of slurry dipping and drying time is 16 h;
dewaxing: carrying out dewaxing treatment and roasting treatment on the shell mold;
precision casting: pouring the stainless steel water into a shell mold, and cooling and forming; the roasting temperature of the formwork is 1080 ℃, the casting temperature is 1540 ℃, and the casting time is 18 min;
shell shaking: and (5) vibrating and breaking the shell mold to fall off to obtain the solar automatic rotor.
Example 5
Melting: weighing raw materials for preparing the solar automatic rotor and melting the raw materials into stainless steel water; the solar automatic rotor is made of stainless steel, and the components of the stainless steel are as follows: c: 0.02%, Si: 0.85%, Mn: 0.92%, Ni: 5 percent of zinc oxide, 0.02 percent of P, 0.01 percent of S, 17.5 percent of Cr, 0.45 percent of Nb, 5 percent of Cu, and the balance of Fe and inevitable impurities, and also comprises 0.24 percent of zinc oxide whiskers, wherein the zinc oxide whiskers are four-leg zinc oxide whiskers;
pressing a wax piece: injecting the molten wax into a wax piece mold, cooling and taking out the wax piece; the temperature of the wax injection liquid is 55 ℃, the time is 22s, the pressure is 2.5MPa, the indoor constant temperature and humidity are kept in the process of casting the wax liquid, the indoor temperature is 26 ℃, and the indoor humidity is 35%;
and (3) tree formation: welding a wax piece on a wax rod; paving a graphite layer after assembling a tree before making a shell mould, wherein the thickness of the graphite layer is 1 mm;
preparing a shell mold: coating the surface of the wax piece with the micro-fine sand particle slurry, spraying sand, coating slurry again, repeating for four times, and finally air-drying the shell mold in the environment with the constant temperature of 30 ℃; the first layer of slurry dipping and drying time is 10 hours, the second layer of slurry dipping and drying time is 10 hours, the third layer of slurry dipping and drying time is 15 hours, and the fourth layer of slurry dipping and drying time is 17 hours;
dewaxing: carrying out dewaxing treatment and roasting treatment on the shell mold;
precision casting: pouring the stainless steel water into a shell mold, and cooling and forming; the mould shell roasting temperature is 1100 ℃, the casting temperature is 1550 ℃, and the casting time is 20 min;
shell shaking: and (5) vibrating and breaking the shell mold to fall off to obtain the solar automatic rotor.
Example 6
The difference from example 3 is only that the composition of the stainless steel in this example does not contain zinc oxide whiskers, and the rest is the same as example 3, and is not described again here.
Example 7
The difference from example 3 is only that the zinc oxide whiskers in the composition of stainless steel in this example are not four-leg zinc oxide whiskers, and the rest is the same as example 3, and thus the description thereof is omitted.
Example 8
The difference from embodiment 3 is only that the solar automatic rotor in this embodiment is manufactured by using a common stainless steel manufacturing process, and the others are the same as those in embodiment 3 and are not described herein again.
Example 9
The difference from example 3 is only that this example does not lay a graphite layer during the preparation process, and the rest is the same as example 3, and the description is omitted here.
Example 10
The difference from example 3 is only that the slurry dipping and drying time in the preparation process of this example is respectively 7h, 10h and 12h, and the rest is the same as example 3, and the description is omitted here.
Example 11
The difference from example 3 is only that the calcination temperature of the mold shell in the preparation process of this example is 900 ℃, and the rest is the same as example 3, and the description is omitted.
Example 12
The difference from example 3 is only that the calcination temperature of the mold shell in the preparation process of this example is 1200 ℃, and the rest is the same as example 3, and the description is omitted here.
Example 13
The difference from example 3 is only that the casting temperature in the preparation process of this example is 1400 ℃, and the rest is the same as example 3, and the description is omitted here.
Example 14
The difference from example 3 is only that the casting temperature in the preparation process of this example is 1600 ℃, and the rest is the same as example 3, and the description is omitted here.
Comparative example 1
The difference from example 3 is that this comparative example is made of commercially available ordinary stainless steel, and the rest is the same as example 3 and is not described herein again.
The solar automatic rotors prepared in the above examples 1 to 14 and comparative example 1 were subjected to performance tests, and the test results are shown in table 1:
table 1: results of testing the performance of the solar automatic rotors obtained in examples 1 to 14 and comparative example 1
From the above results, it can be seen that the solar automatic rotor of the present invention is made of a stainless steel material having the above composition, in which the composition of Cr is 15-17.5%, and thus the stainless steel of the present invention is a high chromium steel, in which chromium can significantly improve strength, hardness and wear resistance, but simultaneously reduce plasticity and toughness. Chromium can improve the oxidation resistance and corrosion resistance of steel, so that the chromium is an important alloy element of stainless steel and heat-resistant steel.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
While the invention has been described in detail and with reference to specific embodiments thereof, it will be apparent to one skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope thereof.
Claims (4)
1. The solar automatic rotor is characterized by being made of stainless steel, and the components of the stainless steel are as follows: c: less than or equal to 0.07 percent, Si: less than or equal to 1.0 percent, Mn: less than or equal to 1.2 percent, Ni: 3 to 5 percent of P, less than or equal to 0.04 percent of S, 15 to 17.5 percent of Cr, 0.15 to 0.45 percent of Nb, 3 to 5 percent of Cu, and the balance of Fe and inevitable impurities;
the stainless steel also comprises 0.12-0.24% of zinc oxide whiskers, and the zinc oxide whiskers are four-leg zinc oxide whiskers;
the preparation method of the solar automatic rotor comprises the following steps:
melting: weighing raw materials for preparing the solar automatic rotor and melting the raw materials into stainless steel water;
pressing a wax piece: injecting the molten wax into a wax piece mold, cooling and taking out the wax piece; the temperature of the injection wax liquid is 53-55 ℃, the time is 20-22s, and the pressure is 2.0-2.5 MPa;
and (3) tree formation: welding a wax piece on a wax rod;
preparing a shell mold: coating the surface of the wax piece with the micro-fine sand particle slurry, spraying sand, coating slurry again, repeating for four times, and finally air-drying the shell mold in the environment with the constant temperature of 25-30 ℃;
dewaxing: carrying out dewaxing treatment and roasting treatment on the shell mold;
precision casting: pouring the stainless steel water into a shell mold, and cooling and forming;
shell shaking: the shell mold is shattered and falls off to obtain the solar automatic rotor;
and paving a graphite layer after assembling the tree before making the shell mould, wherein the thickness of the graphite layer is 0.8-1 mm.
2. The solar automatic rotor as claimed in claim 1, wherein the first layer slurry dipping drying time is 8-10h, the second layer slurry dipping drying time is not less than 8h, the third layer slurry dipping drying time is not less than 12h, and the fourth layer slurry dipping drying time is not less than 14 h.
3. The solar automatic rotor as claimed in claim 1, wherein the baking temperature of the shell mold is 1000-1100 ℃.
4. The solar automatic rotor as claimed in claim 1, wherein the casting temperature is 1500-.
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| CN201811501431.0A CN109536853B (en) | 2018-12-10 | 2018-12-10 | Solar automatic rotor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811501431.0A CN109536853B (en) | 2018-12-10 | 2018-12-10 | Solar automatic rotor |
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| CN109536853A CN109536853A (en) | 2019-03-29 |
| CN109536853B true CN109536853B (en) | 2020-06-30 |
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| JPH0472040A (en) * | 1990-07-11 | 1992-03-06 | Daido Steel Co Ltd | Heat-resistant stainless steel |
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| CN101195896A (en) * | 2007-07-25 | 2008-06-11 | 陈政 | Corrosion resistant, high-strength steel alloy for manufacturing principal axis and gear of speed reducing motor |
| CN104993638A (en) * | 2015-06-17 | 2015-10-21 | 宁波工程学院 | Power device for tyre production equipment |
| CN106914587A (en) * | 2017-01-10 | 2017-07-04 | 浙江美德光学有限公司 | A kind of processing technology of precision-investment casting housing |
| CN108526403A (en) * | 2018-03-02 | 2018-09-14 | 蒋必强 | A kind of manufacturing method of belt buckle |
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