CN111015093A - High-reliability composite sealing ring processing technology for main shaft bearing - Google Patents
High-reliability composite sealing ring processing technology for main shaft bearing Download PDFInfo
- Publication number
- CN111015093A CN111015093A CN201911181485.8A CN201911181485A CN111015093A CN 111015093 A CN111015093 A CN 111015093A CN 201911181485 A CN201911181485 A CN 201911181485A CN 111015093 A CN111015093 A CN 111015093A
- Authority
- CN
- China
- Prior art keywords
- sealing ring
- grinding
- machining
- main shaft
- shaft bearing
- 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
- 238000007789 sealing Methods 0.000 title claims abstract description 105
- 239000002131 composite material Substances 0.000 title claims abstract description 17
- 238000005516 engineering process Methods 0.000 title claims description 12
- 239000000843 powder Substances 0.000 claims abstract description 30
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 26
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 18
- 239000000956 alloy Substances 0.000 claims abstract description 18
- 239000011248 coating agent Substances 0.000 claims abstract description 15
- 238000000576 coating method Methods 0.000 claims abstract description 15
- 238000000227 grinding Methods 0.000 claims description 48
- 239000000463 material Substances 0.000 claims description 41
- 238000003754 machining Methods 0.000 claims description 38
- 238000005507 spraying Methods 0.000 claims description 25
- 229910001018 Cast iron Inorganic materials 0.000 claims description 12
- 238000000498 ball milling Methods 0.000 claims description 12
- 238000003825 pressing Methods 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 10
- 238000004804 winding Methods 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 7
- 238000005520 cutting process Methods 0.000 claims description 7
- 229910052799 carbon Inorganic materials 0.000 claims description 6
- 238000005242 forging Methods 0.000 claims description 6
- 238000009998 heat setting Methods 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 238000010791 quenching Methods 0.000 claims description 6
- 230000000171 quenching effect Effects 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 4
- 238000010285 flame spraying Methods 0.000 claims description 3
- 238000004321 preservation Methods 0.000 claims description 3
- 238000005488 sandblasting Methods 0.000 claims description 3
- 238000007790 scraping Methods 0.000 claims description 3
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 3
- 238000007514 turning Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000000758 substrate Substances 0.000 claims description 2
- 238000004140 cleaning Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 19
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention discloses a processing technique of a high-reliability composite sealing ring for a main shaft bearing, which belongs to the technical field of processing technique, and the processing technique of the high-reliability composite sealing ring for the main shaft bearing ensures that the sealing ring produced by the technique has higher hardness, and a plurality of sealing ring blanks can be simultaneously manufactured in the manufacturing process of the technique, compared with the method of pouring and processing with a mould, the processing time is reduced, the processing efficiency of the sealing ring is greatly improved, and hard alloy powder and graphite powder can form a wear-resistant coating on the surface of the sealing ring, and the friction force of the graphite powder is smaller, so that the sealing ring manufactured by the technique is less in friction force when in use, but has higher wear resistance, the condition that the sealing ring is easy to wear and has larger friction force in the use process is reduced, thereby ensuring the normal service life of the sealing ring, the sealing ring is convenient for workers to process and use.
Description
Technical Field
The invention belongs to the technical field of machining processes, and particularly relates to a machining process of a high-reliability composite sealing ring for a main shaft bearing.
Background
The sealing ring is an annular sealing element with a notch, the sealing ring is placed in an annular groove of the sleeve, the sleeve and the shaft rotate together, and the sealing ring is tightly abutted against the inner hole wall of the static element by the elasticity of the pressed notch, so that the sealing effect can be achieved.
In the process of sealing ring processing, often can use the form of pouring to process, but this kind of processing method not only process time is long, and machining efficiency is slower, and ordinary sealing ring still has the easy wearing and tearing that take place in the in-process of using, the less shortcoming of hardness, can produce great frictional force when using, thereby make the sealing ring take place great wearing and tearing easily, make the life-span of sealing ring lower, thereby be not convenient for people to the use of sealing ring, consequently, need one kind can strengthen the processing and the high reliability composite seal ring processing technology for main shaft bearing that machining efficiency is high to the sealing ring and solve above-mentioned problem.
Disclosure of Invention
Technical problem to be solved
In order to overcome the defects in the prior art, the invention provides a high-reliability composite sealing ring processing technology for a main shaft bearing, and solves the problems that the processing time is long and the efficiency is slow in the common sealing ring processing technology, and the service life of the sealing ring is short because the processed sealing ring is not subjected to strengthening treatment.
(II) technical scheme
In order to achieve the purpose, the invention provides the following technical scheme: the machining process of the high-reliability composite sealing ring for the main shaft bearing comprises the following steps of:
step 1, forging and rough forming:
the material chooses the ball-milling cast iron material for use, forges the ball-milling cast iron material into the cylindrical rectangular material that has even diameter, and the winding that reuse instrument is cylindrical rectangular material even and inseparable on cylindrical mould surface, uses the cutter to divide cylindrical rectangular material into the segmentations respectively after the winding is accomplished for the rectangular material of winding together can form a plurality of sealing ring blank.
Step 2, press-forming:
softening and quenching the plurality of cut sealing ring blanks, pressing the two cut ports of the sealing ring blanks by using a pressing tool after quenching to enable the sealing ring blanks to be positioned on the same plane, and performing heat setting on the sealing ring blanks after pressing to enable the sealing ring blanks to be finished sealing rings.
Step 3, rough machining and machining stress release:
cutting off the edge angles on the two side edges of the inner surface of the sealing ring by using a cutting tool, roughly grinding the two end surfaces by using a rough turning machine, and roughly grinding the two planes on a plane grinding machine.
And after the machining is finished, taking down the seal ring subjected to rough grinding from the lathe, and then placing the seal ring on a tray for 2-5 days to release machining stress of the workpiece.
After the stress is released, the material is cleaned and naturally dried, and after the drying, the material is subjected to sand blasting by using a tool.
Step 4, spraying a coating:
taking a proper amount of hard alloy powder and graphite powder, mixing the hard alloy powder and the graphite powder by using a mixing device to prepare spraying powder, detecting the flowability of the prepared spraying powder, uniformly spraying the spraying powder meeting the requirement on the surface of a sealing ring by adopting a supersonic flame spraying technology after the detection is finished, and carrying out heat treatment on the sprayed sealing ring after the spraying is finished so as to reduce the internal stress of a coating and the interface stress of a coating substrate, and cooling along with a furnace.
Step 5, fine machining and machining stress release:
and after spraying, carrying out semi-fine grinding on the sealing ring, carrying out fine grinding on the sealing ring after the semi-fine grinding is finished, slightly scraping a grinding surface by using fingers after the grinding is finished, and if a gap is sensed, re-grinding until the gap disappears until the surface of the coating is flat and bright.
And after the machining is finished, taking the workpiece down from the lathe, and then placing the workpiece on the tray for 2-5 days to release the machining stress of the workpiece.
Step 6, hardness treatment:
and heating the sealing ring to 1170-1190 ℃ by using a resistance type heat treatment furnace, preserving heat for 30 minutes, cooling the workpiece furnace to 970-990 ℃, preserving heat for 60 minutes, and cooling the sealing ring by water after the workpiece furnace is taken out of the furnace.
As a further scheme of the invention: the forging temperature of the ball milling cast iron material in the step 1 is 1200-1300 ℃, and the diameter of the cylindrical strip material is slightly larger than the diameter of the end face of the sealing ring to be processed.
As a further scheme of the invention: the ball-milling cast iron material is QT400-18AL, and the pressing time of the seal ring blank material in the step 2 is 30-40 minutes.
As a further scheme of the invention: the temperature of the heat setting in the step 2 is 250-400 ℃, the preferred temperature is 250-350 ℃, and the heat preservation time is 30-60 minutes.
As a further scheme of the invention: and a 120-mesh green carbon grinding wheel can be selected during coarse grinding in the step 3.
As a further scheme of the invention: in the step 5, the mass fraction of the hard alloy powder in the spraying powder accounts for 85-95%, the mass fraction of the graphite powder accounts for 5-15%, the particle size of the hard alloy powder is 10-80 μm, and the particle size of the graphite powder is 30-60 μm.
As a further scheme of the invention: in the step 5, a green carbon grinding wheel with 150-240 meshes can be selected for semi-fine grinding, and a carborundum grinding wheel with 400-600 meshes can be selected for fine grinding.
(III) advantageous effects
Compared with the prior art, the invention has the beneficial effects that:
the high-reliability composite sealing ring processing technology for the main shaft bearing can simultaneously manufacture a plurality of sealing ring blank materials by uniformly and tightly winding forged strip materials on the surface of a cylindrical die and respectively cutting the strip materials by using a cutter, and can also reduce the processing time compared with a mode of pouring with the die by spraying a proper amount of hard alloy powder and graphite powder on the surface of the sealing ring and adopting a resistance type heat treatment mode to carry out hardness processing on the sealing ring, so that the sealing ring produced by the technology has higher hardness, a plurality of sealing ring blank materials can be simultaneously manufactured in the manufacturing process of the technology, the processing efficiency of the sealing ring is greatly improved, a wear-resistant coating can be formed on the surface of the sealing ring by the hard alloy powder and the graphite powder, the friction force of the graphite powder is smaller, and the sealing ring manufactured by the technology is smaller in friction force when in use, but the wear resistance is higher, has reduced the easy condition that takes place wearing and tearing and frictional force are great of sealing ring in the in-process that uses to can ensure the normal life of sealing ring, made things convenient for staff to the processing and the use of sealing ring.
Drawings
FIG. 1 is a schematic view of the process of the present invention.
Detailed Description
The technical solution of the present patent will be described in further detail with reference to the following embodiments.
As shown in fig. 1, the present invention provides a technical solution: the machining process of the high-reliability composite sealing ring for the main shaft bearing comprises the following steps of:
step 1, forging and rough forming:
the material chooses the ball-milling cast iron material for use, forge the ball-milling cast iron material into the cylindrical rectangular material that has even diameter, reuse the even and inseparable winding of cylindrical rectangular material on cylindrical mould surface, use the cutter to divide the section respectively cylindrical rectangular material after the winding is accomplished, make the rectangular material that twines together can form a plurality of sealing ring blanks, through equipment step 1, make this manufacturing process can be through the even inseparable winding of rectangular material that will forge the completion on cylindrical mould surface, reuse the cutter method of dividing the section respectively can produce a plurality of sealing ring blanks simultaneously, compare with the mode of mould pouring processing, the time of processing has been reduced, the machining efficiency of sealing ring has greatly been improved.
The forging temperature of the ball milling cast iron material in the step 1 is 1200-1300 ℃, the diameter of the cylindrical strip material is slightly larger than the diameter of the end face of the sealing ring to be processed, and the type of the ball milling cast iron material is QT400-18 AL.
Step 2, press-forming:
softening and quenching the plurality of cut sealing ring blanks, pressing the two cut ports of the sealing ring blanks by using a pressing tool after quenching to enable the sealing ring blanks to be positioned on the same plane, and performing heat setting on the sealing ring blanks after pressing to enable the sealing ring blanks to be finished sealing rings.
The pressing time of the sealing ring blank in the step 2 is 30-40 minutes, the temperature of heat setting in the step 2 is 250-400 ℃, the preferred temperature is 250-350 ℃, and the heat preservation time is 30-60 minutes.
Step 3, rough machining and machining stress release:
cutting off the edge angles on the two side edges of the inner surface of the sealing ring by using a cutting tool, roughly grinding the two end surfaces by using a rough turning machine, and roughly grinding the two planes on a plane grinding machine.
And after the machining is finished, taking down the seal ring subjected to rough grinding from the lathe, and then placing the seal ring on a tray for 2-5 days to release machining stress of the workpiece.
After the stress is released, the material is cleaned and naturally dried, and after the drying, the material is subjected to sand blasting by using a tool.
And a 120-mesh green carbon grinding wheel can be selected during coarse grinding in the step 3.
Step 4, spraying a coating:
taking a proper amount of hard alloy powder and graphite powder, mixing the hard alloy powder and the graphite powder by using mixing equipment, thereby preparing spraying powder, detecting the fluidity of the prepared spraying powder, uniformly spraying the spraying powder meeting the requirement on the surface of the sealing ring by adopting a supersonic flame spraying technology after the detection is finished, carrying out heat treatment on the sprayed sealing ring after the spraying is finished so as to reduce the internal stress of the coating and the interface stress of the coating matrix, cooling along with the furnace, the surface of the sealing ring is sprayed with the hard alloy powder and the graphite powder, and the hard alloy powder and the graphite powder can form a wear-resistant coating on the surface of the sealing ring, the friction force of the graphite powder is small, so that the sealing ring manufactured by the process is small in friction force when in use, but the wear resistance of the sealing ring is high due to the existence of the hard alloy powder.
In the step 4, the mass fraction of the hard alloy powder in the spraying powder accounts for 85-95%, the mass fraction of the graphite powder accounts for 5-15%, the particle size of the hard alloy powder is 10-80 μm, and the particle size of the graphite powder is 30-60 μm.
Step 5, fine machining and machining stress release:
and after spraying, carrying out semi-fine grinding on the sealing ring, carrying out fine grinding on the sealing ring after the semi-fine grinding is finished, slightly scraping a grinding surface by using fingers after the grinding is finished, and if a gap is sensed, re-grinding until the gap disappears until the surface of the coating is flat and bright.
And after the machining is finished, taking the workpiece down from the lathe, and then placing the workpiece on the tray for 2-5 days to release the machining stress of the workpiece.
In the step 5, a green carbon grinding wheel with 150-240 meshes can be selected for semi-fine grinding, and a carborundum grinding wheel with 400-600 meshes can be selected for fine grinding.
Step 6, hardness treatment:
the sealing ring is heated to 1170-1190 ℃ by adopting a resistance type heat treatment furnace, the temperature is maintained for 30 minutes, the workpiece furnace is cooled to 970-990 ℃, the temperature is maintained for 60 minutes, the sealing ring is cooled by water after being taken out of the furnace, the sealing ring can be subjected to hardness treatment by adopting a resistance type heat treatment mode in the step 6, so that the sealing ring produced by the process has higher hardness and better corrosion resistance, the sealing ring can be sampled for hardness detection after being subjected to the hardness treatment, and the testing is carried out according to an ASTM A262 standard method E, which shows that the sealing ring processed by the processing process has good corrosion resistance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.
Claims (7)
1. The machining process of the high-reliability composite sealing ring for the main shaft bearing is characterized by comprising the following steps of:
step 1, forging and rough forming:
the material is a ball-milling cast iron material, the ball-milling cast iron material is forged into a cylindrical strip material with uniform diameter, then a tool is used for uniformly and tightly winding the cylindrical strip material on the surface of a cylindrical die, and after winding is finished, the cylindrical strip material is respectively cut into sections by using a cutter, so that the wound strip material can form a plurality of sealing ring blanks;
step 2, press-forming:
softening and quenching the cut sealing ring blanks, pressing the two cut ports of the sealing ring blanks by using a pressing tool after quenching to enable the sealing ring blanks to be positioned on the same plane, and performing heat setting on the sealing ring blanks after pressing to enable the sealing ring blanks to be finished sealing rings;
step 3, rough machining and machining stress release:
cutting off the edge angles on the two side edges of the inner surface of the sealing ring by using a cutting tool, roughly grinding two end surfaces by using a rough turning machine, and roughly grinding two planes on a plane grinding machine;
after the machining is finished, taking the seal ring subjected to rough grinding off a lathe, and then placing the seal ring on a tray for 2-5 days to release machining stress of the workpiece;
cleaning and naturally drying the stress after releasing the stress, and performing sand blasting treatment on the stress by using a tool after drying;
step 4, spraying a coating:
taking a proper amount of hard alloy powder and graphite powder, mixing the hard alloy powder and the graphite powder by using a mixing device to prepare spraying powder, detecting the flowability of the prepared spraying powder, uniformly spraying the spraying powder meeting the requirement on the surface of a sealing ring by adopting a supersonic flame spraying technology after the detection is finished, and carrying out heat treatment on the sprayed sealing ring after the spraying is finished so as to reduce the internal stress of a coating and the interface stress of a coating substrate, and cooling along with a furnace;
step 5, fine machining and machining stress release:
carrying out semi-fine grinding on the sealing ring after spraying, carrying out fine grinding on the sealing ring after the semi-fine grinding is finished, slightly scraping a grinding surface by using fingers after the grinding is finished, and if a gap is sensed, grinding again until the gap disappears until the surface of the coating is flat and bright;
after the machining is finished, taking the workpiece off the lathe, and then placing the workpiece on a tray for 2-5 days to release machining stress of the workpiece;
step 6, hardness treatment:
and heating the sealing ring to 1170-1190 ℃ by using a resistance type heat treatment furnace, preserving heat for 30 minutes, cooling the workpiece furnace to 970-990 ℃, preserving heat for 60 minutes, and cooling the sealing ring by water after the workpiece furnace is taken out of the furnace.
2. The machining process of the high-reliability composite sealing ring for the main shaft bearing according to claim 1, characterized in that: the forging temperature of the ball milling cast iron material in the step 1 is 1200-1300 ℃, and the diameter of the cylindrical strip material is slightly larger than the diameter of the end face of the sealing ring to be processed.
3. The machining process of the high-reliability composite sealing ring for the main shaft bearing according to claim 1, characterized in that: the ball-milling cast iron material is QT400-18AL, and the pressing time of the seal ring blank material in the step 2 is 30-40 minutes.
4. The machining process of the high-reliability composite sealing ring for the main shaft bearing according to claim 1, characterized in that: the temperature of the heat setting in the step 2 is 250-400 ℃, the preferred temperature is 250-350 ℃, and the heat preservation time is 30-60 minutes.
5. The machining process of the high-reliability composite sealing ring for the main shaft bearing according to claim 1, characterized in that: and a 120-mesh green carbon grinding wheel can be selected during coarse grinding in the step 3.
6. The machining process of the high-reliability composite sealing ring for the main shaft bearing according to claim 1, characterized in that: in the step 4, the mass fraction of the hard alloy powder in the spraying powder accounts for 85-95%, the mass fraction of the graphite powder accounts for 5-15%, the particle size of the hard alloy powder is 10-80 μm, and the particle size of the graphite powder is 30-60 μm.
7. The machining process of the high-reliability composite sealing ring for the main shaft bearing according to claim 1, characterized in that: in the step 5, a green carbon grinding wheel with 150-240 meshes can be selected for semi-fine grinding, and a carborundum grinding wheel with 400-600 meshes can be selected for fine grinding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911181485.8A CN111015093A (en) | 2019-11-27 | 2019-11-27 | High-reliability composite sealing ring processing technology for main shaft bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911181485.8A CN111015093A (en) | 2019-11-27 | 2019-11-27 | High-reliability composite sealing ring processing technology for main shaft bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111015093A true CN111015093A (en) | 2020-04-17 |
Family
ID=70202639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911181485.8A Pending CN111015093A (en) | 2019-11-27 | 2019-11-27 | High-reliability composite sealing ring processing technology for main shaft bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111015093A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB852359A (en) * | 1956-10-04 | 1960-10-26 | Renault | Improvements in and relating to the manufacture of metal rings |
| CN103014473A (en) * | 2012-12-26 | 2013-04-03 | 洛阳双瑞特种装备有限公司 | Machining process of Ti-containing corrosion-resisting alloy sealing ring |
| CN104233179A (en) * | 2014-09-30 | 2014-12-24 | 广东澳利坚建筑五金有限公司 | Preparation method for wear-resistant thermally-sprayed composite copper-aluminum alloy coating and coating material |
| CN104289871A (en) * | 2014-09-16 | 2015-01-21 | 萍乡市德博科技发展有限公司 | Method for machining sealing rings |
| CN105057988A (en) * | 2015-08-21 | 2015-11-18 | 江西省萍乡市三善机电有限公司 | Method for preparing turbine sealing rings through alloy wire rod |
| WO2015192396A1 (en) * | 2014-06-18 | 2015-12-23 | 浙江工业大学 | Metal-based/diamond laser composite coating and preparation method thereof |
| CN107541694A (en) * | 2016-06-23 | 2018-01-05 | 安易斯密封（宁波）有限公司 | A kind of preparation method of rotary packing ring surface lubrication wear-resisting coating |
-
2019
- 2019-11-27 CN CN201911181485.8A patent/CN111015093A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB852359A (en) * | 1956-10-04 | 1960-10-26 | Renault | Improvements in and relating to the manufacture of metal rings |
| CN103014473A (en) * | 2012-12-26 | 2013-04-03 | 洛阳双瑞特种装备有限公司 | Machining process of Ti-containing corrosion-resisting alloy sealing ring |
| WO2015192396A1 (en) * | 2014-06-18 | 2015-12-23 | 浙江工业大学 | Metal-based/diamond laser composite coating and preparation method thereof |
| CN104289871A (en) * | 2014-09-16 | 2015-01-21 | 萍乡市德博科技发展有限公司 | Method for machining sealing rings |
| CN104233179A (en) * | 2014-09-30 | 2014-12-24 | 广东澳利坚建筑五金有限公司 | Preparation method for wear-resistant thermally-sprayed composite copper-aluminum alloy coating and coating material |
| CN105057988A (en) * | 2015-08-21 | 2015-11-18 | 江西省萍乡市三善机电有限公司 | Method for preparing turbine sealing rings through alloy wire rod |
| CN107541694A (en) * | 2016-06-23 | 2018-01-05 | 安易斯密封（宁波）有限公司 | A kind of preparation method of rotary packing ring surface lubrication wear-resisting coating |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2588421A (en) | Application of sprayed metal coatings to solid objects | |
| JPH02224806A (en) | Plug for producing seamless steel pipe | |
| CN105063491B (en) | A kind of preparation method of radial precision forging machine high rigidity tup | |
| CN111468720B (en) | Method for manufacturing radial centralizing sliding bearing static ring | |
| CN109439960B (en) | Cold spraying additive repairing material for abraded Roots blower cover plate | |
| CN108707894A (en) | Powder and process used in a kind of laser melting coating self-lubricating abrasion-resistant cobalt-base alloys | |
| CN104561994A (en) | Laser surface cladding method for copper roller of metal belt forming machine | |
| CN104162676A (en) | Fracturing pump valve body and valve seat vacuum fusion covering surface strengthening method | |
| CN109162725A (en) | A kind of laser spraying diamond hobboing cutter cutter ring and its processing method | |
| CN110923608B (en) | Wear-resistant coating of sink roller shaft sleeve, preparation method and application | |
| US6886986B1 (en) | Nitinol ball bearing element and process for making | |
| CN111482609A (en) | Method for manufacturing radial centralizing sliding bearing moving ring | |
| CN102476344A (en) | Polishing and grinding method of titanium alloy blades | |
| CN111015093A (en) | High-reliability composite sealing ring processing technology for main shaft bearing | |
| CN110343972A (en) | A kind of rotary kiln hydraulic rectangle gear wheel and preparation method thereof | |
| CN104057269A (en) | Machining technology of punch of hard alloy holding-up hammer forming die | |
| CN213052745U (en) | Manufacturing die for radial centralizing sliding bearing moving ring | |
| DE821902C (en) | Process for spraying on metallic coatings | |
| WO2001012359A1 (en) | Nitinol ball bearing element and process for making | |
| CN108588628B (en) | High-speed die cutting tool surface gradient coating and preparation process thereof | |
| WO2020113798A1 (en) | Long-service-life ultrathin sintering brazing hole drill for drilling of military armored kevlar layer and production process therefor | |
| CN113752094B (en) | Semiconductor insulating ring processing method | |
| RU2507027C1 (en) | Method of inductive hardening and reconditioning of parts | |
| CN110714183B (en) | Method for making brazed diamond tools | |
| CN107937860A (en) | A kind of preparation method of argon arc remelting Fe base wearing layers |
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 |