CN111136215A - Manufacturing process of high-temperature-resistant bearing in operation - Google Patents
Manufacturing process of high-temperature-resistant bearing in operation Download PDFInfo
- Publication number
- CN111136215A CN111136215A CN202010036807.6A CN202010036807A CN111136215A CN 111136215 A CN111136215 A CN 111136215A CN 202010036807 A CN202010036807 A CN 202010036807A CN 111136215 A CN111136215 A CN 111136215A
- Authority
- CN
- China
- Prior art keywords
- bearing
- parts
- mold
- temperature
- sand
- 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.)
- Withdrawn
Links
Classifications
-
- 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
-
- 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
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- 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
- C22C47/00—Making alloys containing metallic or non-metallic fibres or filaments
- C22C47/08—Making alloys containing metallic or non-metallic fibres or filaments by contacting the fibres or filaments with molten metal, e.g. by infiltrating the fibres or filaments placed in a mould
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C49/00—Alloys containing metallic or non-metallic fibres or filaments
- C22C49/02—Alloys containing metallic or non-metallic fibres or filaments characterised by the matrix material
- C22C49/08—Iron group metals
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C49/00—Alloys containing metallic or non-metallic fibres or filaments
- C22C49/14—Alloys containing metallic or non-metallic fibres or filaments characterised by the fibres or filaments
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Powder Metallurgy (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention discloses a manufacturing process of a high-temperature-resistant bearing in operation, which aims at solving the problems of low fatigue strength, low high-temperature resistance and poor service life and reliability of the existing bearing, and provides the following scheme at present, and the manufacturing process comprises the following steps: (1) preparing molding sand: sodium silicate sand is used as a raw material, and 1% -3% of bentonite is added to prepare molding sand for casting; (2) preparing a mold sand mold: and (3) manufacturing a mold of the bearing according to the size and shape of the bearing, and placing the mold in the sand box in the step (1) to obtain a bearing mold sand mold. According to the invention, a cold treatment process is added between the quenching process and the tempering process for manufacturing the bearing, the quenching process, the cold treatment process and the tempering process are optimized, the temperature and the heat preservation time during quenching, cold treatment and tempering are strictly controlled, the stability, strength, toughness and the like of the bearing can be improved, the high temperature resistance of the bearing is improved, and the fatigue life is prolonged.
Description
Technical Field
The invention relates to the field of bearing manufacturing, in particular to a manufacturing process of a bearing with high temperature resistance in operation.
Background
The bearing is a supporting part in a mechanical transmission mechanism and is used for determining the relative movement position of a rotating shaft and other parts, reducing the friction coefficient in the movement process of the rotating shaft, ensuring the rotation precision of the rotating shaft, and directly influencing the working performance of the whole machine of the machine by the quality and the bearing capacity of the rotating shaft. The prior bearing steel heat treatment process comprises the following steps: quenching and heating at 830 ℃ and 850 ℃, and tempering in a tempering furnace at 150 ℃ and 180 ℃ for a certain time after keeping the proper time. The grain size of the material obtained by the conventional heat treatment process can only reach 8 grades, and the material has low fatigue strength, low high temperature resistance and poorer service life and reliability. The conventional heat treatment process cannot meet the development requirements of mechanical parts with high reliability and high comfort, for example, the bearing cannot adapt to special temperature, load and lubricating conditions under the special and harsh use working condition of the rocker bearing of the engine, so that the service life of the bearing is further shortened, and therefore, the manufacturing process of the high-temperature-resistant bearing during operation is provided.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a bearing manufacturing process capable of resisting high temperature during operation.
A manufacturing process of a bearing with high temperature resistance in operation comprises the following steps:
(1) preparing molding sand: sodium silicate sand is used as a raw material, and 1% -3% of bentonite is added to prepare molding sand for casting;
(2) preparing a mold sand mold: manufacturing a mold of the bearing according to the size and shape of the bearing, and placing the mold in the sand box in the step (1) to obtain a bearing mold sand mold;
(3) preparing bearing molten metal: adding 80-90 parts of chrome steel, 2-5 parts of magnesium powder, 5-9 parts of aluminum powder, 5-7 parts of copper powder, 10-15 parts of epoxy resin, 2-6 parts of glass fiber, 3-6 parts of polytetrafluoroethylene, 5-8 parts of graphite, 4-8 parts of carbon fiber, 0.5-2 parts of silicon barium calcium, 1-1.5 parts of metal toughening agent and 1-3 parts of curing agent into a high-speed crusher in sequence, crushing and mixing at high speed to prepare metal powder, heating, stirring and completely melting to prepare bearing metal liquid;
(4) preparing a bearing rough blank: pouring the bearing molten metal prepared in the step (3) into the bearing mould in the step (2), and cooling to prepare a bearing rough blank;
(5) cleaning and polishing of rough blanks: opening the mold cooled in the step (4), taking out the formed rough bearing blank, cleaning the surface of the rough bearing blank and polishing;
(6) heat treatment of the rough blank: sequentially carrying out quenching, cold treatment and tempering on the bearing rough blank in the step (5), specifically, heating the bearing rough blank at a first time, then preserving heat for 1-3 hours, then carrying out primary cooling in a furnace and preserving heat for 1-3 hours, then carrying out secondary heating on the bearing rough blank again, preserving heat for 1-3 hours, then carrying out secondary cooling in the furnace, and then discharging the bearing rough blank out of the furnace for air cooling;
(7) and (3) fine grinding of the bearing: placing the bearing in the step (6) into a clean water tank for fixing, then carrying out fine grinding processing on the surface of the bearing through a fine grinding machine, wherein the bearing is vertically and axially placed into the clean water tank during the fine grinding processing, the bearing can rotate, the bearing and the fine grinding part of the fine grinding machine are above the water surface, and then carrying out fine grinding on the bearing for 10-15 min;
(8) and (3) manufacturing a bearing: taking the bearing after the finish grinding in the step (7) out quickly, removing water on the surface of the bearing through a quick air drying device, then rinsing the bearing into the antirust grease for 3-5 times, and finally taking out the bearing, and air-drying and storing the bearing;
(9) and (3) finished product detection and warehousing: and (4) inspecting the finished bearing product prepared in the step (8), removing unqualified products, and sealing and warehousing the qualified products for storage.
Preferably, the temperature of the primary heating of the bearing rough blank in the step (6) is 900-950 ℃, the temperature of the primary cooling in the furnace is 600-650 ℃, the temperature of the secondary heating is 900-950 ℃, and the temperature of the secondary cooling in the furnace is 600 ℃.
Preferably, the heating temperature in the step (3) is 3000-3500 ℃, and the heating time is 6-10 hours.
Compared with the prior art, the invention has the beneficial effects that:
according to the manufacturing process of the bearing with high temperature resistance in operation, provided by the invention, the cold treatment process is added between the quenching process and the tempering process for manufacturing the bearing, the quenching, cold treatment and tempering processes are optimized, the temperature and the heat preservation time during quenching, cold treatment and tempering are strictly controlled, the stability, strength, toughness and the like of the bearing can be improved, the high temperature resistance of the bearing is improved, and the fatigue life is prolonged;
the bearing manufacturing process provided by the invention optimizes quenching, cold treatment and tempering processes, strictly controls the temperature and the heat preservation time during quenching, cold treatment and tempering, can improve the stability, strength, toughness and the like of the bearing, increases the high-temperature resistance of the bearing, and prolongs the fatigue life.
Detailed Description
The present invention will be further illustrated with reference to the following specific examples.
The first embodiment is as follows:
the invention provides a manufacturing process of a high-temperature-resistant bearing in operation, which comprises the following steps:
(1) preparing molding sand: sodium silicate sand is used as a raw material, and 1% of bentonite is added to prepare molding sand for casting;
(2) preparing a mold sand mold: manufacturing a mold of the bearing according to the size and shape of the bearing, and placing the mold in the sand box in the step (1) to obtain a bearing mold sand mold;
(3) preparing bearing molten metal: sequentially adding 80 parts of chrome steel, 2 parts of magnesium powder, 5 parts of aluminum powder, 5 parts of copper powder, 10 parts of epoxy resin, 2 parts of glass fiber filaments, 3 parts of polytetrafluoroethylene, 5 parts of graphite, 4 parts of carbon fiber filaments, 0.5 part of calcium silicon barium, 1 part of metal toughening agent and 1 part of curing agent into a high-speed crusher, crushing and mixing at high speed to prepare metal powder, heating, stirring and completely melting to prepare bearing metal liquid;
(4) preparing a bearing rough blank: pouring the bearing molten metal prepared in the step (3) into the bearing mould in the step (2), and cooling to prepare a bearing rough blank;
(5) cleaning and polishing of rough blanks: opening the mold cooled in the step (4), taking out the formed bearing rough blank, cleaning the surface of the bearing rough blank and polishing;
(6) heat treatment of the rough blank: sequentially carrying out quenching, cold treatment and tempering on the bearing rough blank in the step (5), specifically, heating the bearing rough blank at a first temperature, then preserving heat for 1 hour, then carrying out primary cooling in a furnace and preserving heat for 1 hour, then carrying out secondary heating on the bearing rough blank again, preserving heat for 1 hour, then carrying out secondary cooling in the furnace, and then discharging from the furnace for air cooling;
(7) and (3) fine grinding of the bearing: placing the bearing in the step (6) into a clean water tank for fixing, then carrying out fine grinding processing on the surface of the bearing through a fine grinding machine, vertically and axially placing the bearing into the clean water tank during the fine grinding processing, enabling the bearing to rotate, enabling the fine grinding part of the bearing and the fine grinding machine to be above the water surface, and then carrying out fine grinding on the bearing for 10 min;
(8) and (3) manufacturing a bearing: taking out the bearing after the finish grinding in the step (7), removing water on the surface of the bearing through a quick air drying device, then rinsing the bearing into the antirust grease for 3 times, and finally taking out the bearing, and air-drying and storing the bearing;
(9) and (3) finished product detection and warehousing: and (4) inspecting the finished bearing product prepared in the step (8), removing unqualified products, and sealing and warehousing the qualified products for storage.
Wherein, the temperature of the primary heating of the bearing rough blank in the step (6) is 900 ℃, the temperature of the primary cooling in the furnace is 600 ℃, the temperature of the secondary heating is 900 ℃, and the temperature of the secondary cooling in the furnace is 600 ℃.
Wherein the heating temperature in the step (3) is 3000 ℃, and the heating time is 6 hours.
Example two:
the invention provides a manufacturing process of a high-temperature-resistant bearing in operation, which comprises the following steps:
(1) preparing molding sand: sodium silicate sand is used as a raw material, and 2% of bentonite is added to prepare molding sand for casting;
(2) preparing a mold sand mold: manufacturing a mold of the bearing according to the size and shape of the bearing, and placing the mold in the sand box in the step (1) to obtain a bearing mold sand mold;
(3) preparing bearing molten metal: sequentially adding 80 parts of chrome steel, 2 parts of magnesium powder, 5 parts of aluminum powder, 5 parts of copper powder, 10 parts of epoxy resin, 2 parts of glass fiber filaments, 3 parts of polytetrafluoroethylene, 5 parts of graphite, 4 parts of carbon fiber filaments, 0.5 part of calcium silicon barium, 1 part of metal toughening agent and 1 part of curing agent into a high-speed crusher, crushing and mixing at high speed to prepare metal powder, heating, stirring and completely melting to prepare bearing metal liquid;
(4) preparing a bearing rough blank: pouring the bearing molten metal prepared in the step (3) into the bearing mould in the step (2), and cooling to prepare a bearing rough blank;
(5) cleaning and polishing of rough blanks: opening the mold cooled in the step (4), taking out the formed bearing rough blank, cleaning the surface of the bearing rough blank and polishing;
(6) heat treatment of the rough blank: sequentially carrying out quenching, cold treatment and tempering on the bearing rough blank in the step (5), specifically, heating the bearing rough blank at a first temperature, then preserving heat for 1 hour, then carrying out primary cooling in a furnace and preserving heat for 1 hour, then carrying out secondary heating on the bearing rough blank again, preserving heat for 1 hour, then carrying out secondary cooling in the furnace, and then discharging from the furnace for air cooling;
(7) and (3) fine grinding of the bearing: placing the bearing in the step (6) into a clean water tank for fixing, then carrying out fine grinding processing on the surface of the bearing through a fine grinding machine, vertically and axially placing the bearing into the clean water tank during the fine grinding processing, enabling the bearing to rotate, enabling the fine grinding part of the bearing and the fine grinding machine to be above the water surface, and then carrying out fine grinding on the bearing for 15 min;
(8) and (3) manufacturing a bearing: taking out the bearing after the finish grinding in the step (7), removing water on the surface of the bearing through a quick air drying device, then rinsing the bearing into the antirust grease for 5 times, and finally taking out the bearing, and air-drying and storing the bearing;
(9) and (3) finished product detection and warehousing: and (4) inspecting the finished bearing product prepared in the step (8), removing unqualified products, and sealing and warehousing the qualified products for storage.
Wherein, the temperature of the primary heating of the bearing rough blank in the step (6) is 950 ℃, the temperature of the primary cooling in the furnace is 650 ℃, the temperature of the secondary heating is 950 ℃, and the temperature of the secondary cooling in the furnace is 600 ℃.
Wherein the heating temperature in the step (3) is 3500 ℃ and the heating time is 10 hours.
Example three:
the invention provides a manufacturing process of a high-temperature-resistant bearing in operation, which comprises the following steps:
(1) preparing molding sand: sodium silicate sand is used as a raw material, and 2% of bentonite is added to prepare molding sand for casting;
(2) preparing a mold sand mold: manufacturing a mold of the bearing according to the size and shape of the bearing, and placing the mold in the sand box in the step (1) to obtain a bearing mold sand mold;
(3) preparing bearing molten metal: sequentially adding 90 parts of chrome steel, 5 parts of magnesium powder, 9 parts of aluminum powder, 7 parts of copper powder, 15 parts of epoxy resin, 6 parts of glass fiber filaments, 6 parts of polytetrafluoroethylene, 8 parts of graphite, 8 parts of carbon fiber filaments, 2 parts of silicon barium calcium, 1.5 parts of metal toughening agent and 3 parts of curing agent into a high-speed crusher, crushing and mixing at high speed to prepare metal powder, heating, stirring and completely melting to prepare bearing metal liquid;
(4) preparing a bearing rough blank: pouring the bearing molten metal prepared in the step (3) into the bearing mould in the step (2), and cooling to prepare a bearing rough blank;
(5) cleaning and polishing of rough blanks: opening the mold cooled in the step (4), taking out the formed bearing rough blank, cleaning the surface of the bearing rough blank and polishing;
(6) heat treatment of the rough blank: sequentially carrying out quenching, cold treatment and tempering on the bearing rough blank in the step (5), specifically, heating the bearing rough blank at a first temperature, then preserving heat for 3 hours, then carrying out primary cooling in a furnace and preserving heat for 3 hours, then carrying out secondary heating on the bearing rough blank again, preserving heat for 3 hours, then carrying out secondary cooling in the furnace, and then discharging from the furnace for air cooling;
(7) and (3) fine grinding of the bearing: placing the bearing in the step (6) into a clean water tank for fixing, then carrying out fine grinding processing on the surface of the bearing through a fine grinding machine, vertically and axially placing the bearing into the clean water tank during the fine grinding processing, enabling the bearing to rotate, enabling the fine grinding part of the bearing and the fine grinding machine to be above the water surface, and then carrying out fine grinding on the bearing for 10 min;
(8) and (3) manufacturing a bearing: taking out the bearing after the finish grinding in the step (7), removing water on the surface of the bearing through a quick air drying device, then rinsing the bearing into the antirust grease for 3 times, and finally taking out the bearing, and air-drying and storing the bearing;
(9) and (3) finished product detection and warehousing: and (4) inspecting the finished bearing product prepared in the step (8), removing unqualified products, and sealing and warehousing the qualified products for storage.
Wherein, the temperature of the primary heating of the bearing rough blank in the step (6) is 900 ℃, the temperature of the primary cooling in the furnace is 600 ℃, the temperature of the secondary heating is 900 ℃, and the temperature of the secondary cooling in the furnace is 600 ℃.
Wherein the heating temperature in the step (3) is 3000 ℃, and the heating time is 6 hours.
Example four:
the invention provides a manufacturing process of a high-temperature-resistant bearing in operation, which comprises the following steps:
(1) preparing molding sand: sodium silicate sand is used as a raw material, and 3% of bentonite is added to prepare molding sand for casting;
(2) preparing a mold sand mold: manufacturing a mold of the bearing according to the size and shape of the bearing, and placing the mold in the sand box in the step (1) to obtain a bearing mold sand mold;
(3) preparing bearing molten metal: sequentially adding 90 parts of chrome steel, 5 parts of magnesium powder, 9 parts of aluminum powder, 7 parts of copper powder, 15 parts of epoxy resin, 6 parts of glass fiber filaments, 6 parts of polytetrafluoroethylene, 8 parts of graphite, 8 parts of carbon fiber filaments, 2 parts of silicon barium calcium, 1.5 parts of metal toughening agent and 3 parts of curing agent into a high-speed crusher, crushing and mixing at high speed to prepare metal powder, heating, stirring and completely melting to prepare bearing metal liquid;
(4) preparing a bearing rough blank: pouring the bearing molten metal prepared in the step (3) into the bearing mould in the step (2), and cooling to prepare a bearing rough blank;
(5) cleaning and polishing of rough blanks: opening the mold cooled in the step (4), taking out the formed bearing rough blank, cleaning the surface of the bearing rough blank and polishing;
(6) heat treatment of the rough blank: sequentially carrying out quenching, cold treatment and tempering on the bearing rough blank in the step (5), specifically, heating the bearing rough blank at a first temperature, then preserving heat for 3 hours, then carrying out primary cooling in a furnace and preserving heat for 3 hours, then carrying out secondary heating on the bearing rough blank again, preserving heat for 3 hours, then carrying out secondary cooling in the furnace, and then discharging from the furnace for air cooling;
(7) and (3) fine grinding of the bearing: placing the bearing in the step (6) into a clean water tank for fixing, then carrying out fine grinding processing on the surface of the bearing through a fine grinding machine, vertically and axially placing the bearing into the clean water tank during the fine grinding processing, enabling the bearing to rotate, enabling the fine grinding part of the bearing and the fine grinding machine to be above the water surface, and then carrying out fine grinding on the bearing for 15 min;
(8) and (3) manufacturing a bearing: taking out the bearing after the finish grinding in the step (7), removing water on the surface of the bearing through a quick air drying device, then rinsing the bearing into the antirust grease for 5 times, and finally taking out the bearing, and air-drying and storing the bearing;
(9) and (3) finished product detection and warehousing: and (4) inspecting the finished bearing product prepared in the step (8), removing unqualified products, and sealing and warehousing the qualified products for storage.
Wherein, the temperature of the primary heating of the bearing rough blank in the step (6) is 950 ℃, the temperature of the primary cooling in the furnace is 650 ℃, the temperature of the secondary heating is 950 ℃, and the temperature of the secondary cooling in the furnace is 600 ℃.
Wherein the heating temperature in the step (3) is 3500 ℃ and the heating time is 10 hours.
According to the manufacturing process of the bearing with high temperature resistance in operation, provided by the invention, the cold treatment process is added between the quenching process and the tempering process for manufacturing the bearing, the quenching, cold treatment and tempering processes are optimized, the temperature and the heat preservation time during quenching, cold treatment and tempering are strictly controlled, the stability, strength, toughness and the like of the bearing can be improved, the high temperature resistance of the bearing is improved, and the fatigue life is prolonged.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (3)
1. A manufacturing process of a bearing with high temperature resistance in operation is characterized by comprising the following steps:
(1) preparing molding sand: sodium silicate sand is used as a raw material, and 1% -3% of bentonite is added to prepare molding sand for casting;
(2) preparing a mold sand mold: manufacturing a mold of the bearing according to the size and shape of the bearing, and placing the mold in the sand box in the step (1) to obtain a bearing mold sand mold;
(3) preparing bearing molten metal: adding 80-90 parts of chrome steel, 2-5 parts of magnesium powder, 5-9 parts of aluminum powder, 5-7 parts of copper powder, 10-15 parts of epoxy resin, 2-6 parts of glass fiber, 3-6 parts of polytetrafluoroethylene, 5-8 parts of graphite, 4-8 parts of carbon fiber, 0.5-2 parts of silicon barium calcium, 1-1.5 parts of metal toughening agent and 1-3 parts of curing agent into a high-speed crusher in sequence, crushing and mixing at high speed to prepare metal powder, heating, stirring and completely melting to prepare bearing metal liquid;
(4) preparing a bearing rough blank: pouring the bearing molten metal prepared in the step (3) into the bearing mould in the step (2), and cooling to prepare a bearing rough blank;
(5) cleaning and polishing of rough blanks: opening the mold cooled in the step (4), taking out the formed rough bearing blank, cleaning the surface of the rough bearing blank and polishing;
(6) heat treatment of the rough blank: sequentially carrying out quenching, cold treatment and tempering on the bearing rough blank in the step (5), specifically, heating the bearing rough blank at a first time, then preserving heat for 1-3 hours, then carrying out primary cooling in a furnace and preserving heat for 1-3 hours, then carrying out secondary heating on the bearing rough blank again, preserving heat for 1-3 hours, then carrying out secondary cooling in the furnace, and then discharging the bearing rough blank out of the furnace for air cooling;
(7) and (3) fine grinding of the bearing: placing the bearing in the step (6) into a clean water tank for fixing, then carrying out fine grinding processing on the surface of the bearing through a fine grinding machine, wherein the bearing is vertically and axially placed into the clean water tank during the fine grinding processing, the bearing can rotate, the bearing and the fine grinding part of the fine grinding machine are above the water surface, and then carrying out fine grinding on the bearing for 10-15 min;
(8) and (3) manufacturing a bearing: taking the bearing after the finish grinding in the step (7) out quickly, removing water on the surface of the bearing through a quick air drying device, then rinsing the bearing into the antirust grease for 3-5 times, and finally taking out the bearing, and air-drying and storing the bearing;
(9) and (3) finished product detection and warehousing: and (4) inspecting the finished bearing product prepared in the step (8), removing unqualified products, and sealing and warehousing the qualified products for storage.
2. The process as claimed in claim 1, wherein the temperature of the primary heating of the bearing blank in step (6) is 900-950 ℃, the temperature of the primary cooling in the furnace is 600-650 ℃, the temperature of the secondary heating is 900-950 ℃, and the temperature of the secondary cooling in the furnace is 600 ℃.
3. The process as claimed in claim 1, wherein the heating temperature in step (3) is 3000-3500 ℃ and the heating time is 6-10 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010036807.6A CN111136215A (en) | 2020-01-14 | 2020-01-14 | Manufacturing process of high-temperature-resistant bearing in operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010036807.6A CN111136215A (en) | 2020-01-14 | 2020-01-14 | Manufacturing process of high-temperature-resistant bearing in operation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111136215A true CN111136215A (en) | 2020-05-12 |
Family
ID=70524975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010036807.6A Withdrawn CN111136215A (en) | 2020-01-14 | 2020-01-14 | Manufacturing process of high-temperature-resistant bearing in operation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111136215A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112570982A (en) * | 2020-12-28 | 2021-03-30 | 镇江裕久智能装备股份有限公司 | Bearing thermal expansion and cold shrinkage type assembly process |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005131664A (en) * | 2003-10-30 | 2005-05-26 | Honda Motor Co Ltd | Salt core for casting and its making method |
| CN101935752A (en) * | 2010-08-03 | 2011-01-05 | 洛阳Lyc轴承有限公司 | Thermal treatment technology of high-nitrogen stainless bearing steel |
| CN103233101A (en) * | 2013-04-08 | 2013-08-07 | 浙江吉利汽车研究院有限公司杭州分公司 | GCr15 bearing steel heat treatment method |
| CN105506235A (en) * | 2015-12-15 | 2016-04-20 | 常熟市常轴轴承有限公司 | Heat treatment process of high carbon chromium bearing steel bearing ring |
| CN105587771A (en) * | 2016-02-23 | 2016-05-18 | 安徽省宁国顺昌机械有限公司 | Bearing long in service life |
| CN107253096A (en) * | 2017-06-21 | 2017-10-17 | 安徽金越轴承有限公司 | A kind of water of bearing surface rushes smooth grinding method |
| CN108411216A (en) * | 2018-03-13 | 2018-08-17 | 如皋市非标轴承有限公司 | A kind of wear resistant corrosion resistant bearing and manufacture craft |
| CN109058299A (en) * | 2018-10-12 | 2018-12-21 | 福建翰达流体控制设备有限公司 | A kind of high-performance abrasion-proof bearing and its manufacture craft |
-
2020
- 2020-01-14 CN CN202010036807.6A patent/CN111136215A/en not_active Withdrawn
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005131664A (en) * | 2003-10-30 | 2005-05-26 | Honda Motor Co Ltd | Salt core for casting and its making method |
| CN101935752A (en) * | 2010-08-03 | 2011-01-05 | 洛阳Lyc轴承有限公司 | Thermal treatment technology of high-nitrogen stainless bearing steel |
| CN103233101A (en) * | 2013-04-08 | 2013-08-07 | 浙江吉利汽车研究院有限公司杭州分公司 | GCr15 bearing steel heat treatment method |
| CN105506235A (en) * | 2015-12-15 | 2016-04-20 | 常熟市常轴轴承有限公司 | Heat treatment process of high carbon chromium bearing steel bearing ring |
| CN105587771A (en) * | 2016-02-23 | 2016-05-18 | 安徽省宁国顺昌机械有限公司 | Bearing long in service life |
| CN107253096A (en) * | 2017-06-21 | 2017-10-17 | 安徽金越轴承有限公司 | A kind of water of bearing surface rushes smooth grinding method |
| CN108411216A (en) * | 2018-03-13 | 2018-08-17 | 如皋市非标轴承有限公司 | A kind of wear resistant corrosion resistant bearing and manufacture craft |
| CN109058299A (en) * | 2018-10-12 | 2018-12-21 | 福建翰达流体控制设备有限公司 | A kind of high-performance abrasion-proof bearing and its manufacture craft |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112570982A (en) * | 2020-12-28 | 2021-03-30 | 镇江裕久智能装备股份有限公司 | Bearing thermal expansion and cold shrinkage type assembly process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101695714B (en) | Cast steel back-up roller and preparation method thereof | |
| CN102560229B (en) | Low chrome multielement alloy cast ball and preparing method thereof | |
| CN109706297B (en) | Heat treatment method of H13 die steel | |
| WO2018041170A1 (en) | Self-lubricating rolling bearing and preparation method therefor | |
| CN106735225A (en) | A kind of method for being injected into shape forging aluminium alloy brake disc brake drum | |
| CN103602920A (en) | Bearing steel and manufacturing process of wear-resistant bearing | |
| CN111136215A (en) | Manufacturing process of high-temperature-resistant bearing in operation | |
| WO2022166155A1 (en) | Container crane wheel steel, wheel and preparation method therefor | |
| CN112658264A (en) | Powder metallurgy double-drive hub and production process thereof | |
| CN111299481B (en) | Closed forging and pressing forming process for gear shaft of new energy automobile engine | |
| CN107177781A (en) | A kind of hysteresis brake rotor formula and preparation method thereof | |
| CN112795838B (en) | High-speed steel roll collar of profile steel rail beam universal mill and preparation method thereof | |
| CN114260419B (en) | Casting method of cast steel excavator driving wheel | |
| CN111088466A (en) | Processing technology for enhancing impact deformation resistance of wear-resistant steel ball | |
| CN110592446A (en) | Novel aluminum alloy material for lightweight axle box of high-speed passenger train bogie and preparation method thereof | |
| CN112391586A (en) | Preparation process of alloy lining plate | |
| CN112680670A (en) | Automobile valve body and preparation method thereof | |
| CN102489681B (en) | Centrifugally cast cross-wedge rolling die and manufacturing method thereof | |
| CN114289657B (en) | Crack sensitive peritectic steel large forging circle and preparation method thereof | |
| CN112893779B (en) | Sand-free molding method for roller | |
| CN113864424B (en) | MC nylon wheel and production method thereof | |
| CN108411216A (en) | A kind of wear resistant corrosion resistant bearing and manufacture craft | |
| CN115229129A (en) | Preparation method of wear-resistant accessory of automobile part | |
| CN115582678B (en) | Manufacturing method of heavy universal joint cross shaft | |
| CN115741100A (en) | Crankshaft blank forging forming 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 | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200512 |
|
| WW01 | Invention patent application withdrawn after publication |