CN109986025A - Stainless steel water pump vane wheel full form casting process - Google Patents
Stainless steel water pump vane wheel full form casting process Download PDFInfo
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- CN109986025A CN109986025A CN201711480525.XA CN201711480525A CN109986025A CN 109986025 A CN109986025 A CN 109986025A CN 201711480525 A CN201711480525 A CN 201711480525A CN 109986025 A CN109986025 A CN 109986025A
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- impeller
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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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- 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
- B22C9/28—Moulds for peculiarly-shaped castings for wheels, rolls, or rollers
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention relates to water pump vane production fields, disclose a kind of stainless steel water pump vane wheel full form casting process, its key points of the technical solution are that: including cere molding, shell molding and impeller casting molding process.It forms wax-pattern quality height, forms shell hardness and good permeability, mould casting ratio of defects are low；Roughing can ensure that impeller outlet position dimension precision reaches defined requirement, keep exit width uniform, and error is small, guarantees in the drawing margin of tolerance；A large amount of stress is generated inside impeller casting after roughing and finishing；After stress-removal is heat-treated, low temperature stress-removal, stable dimensions, it is ensured that the dimensional accuracy after processing are carried out.The stainless steel water pump vane wheel that the present invention is processed, ratio of defects is low, and size distortion is small, and Impeller Machining dimensional accuracy is good, and surface smoothness is high, and impeller service life is high.
Description
Technical field
The present invention relates to impeller production field, in particular to a kind of stainless steel water pump vane wheel full form casting process.
Background technique
Full form casting process is that molten metal is poured into casting mold, and obtaining after solidification has certain shapes, size and performance
The forming method of metal blank.
The process flow of model casting is: wax-pattern compacting → wax-pattern assembling → hanging sand → dewaxing → Baking → casting,
Wherein wax-pattern packaging technology and shell cooling condition have important influence to casting quality.
Traditional charging pump uses pig iron material to be made mostly, but the corrosion resistance of the pig iron, durability are nothing like stainless steel
Material；And the impeller ratio of defects of melt film casting and forming is high.Therefore, it is necessary to design a kind of utilization stainless steel material manufacture water pump leaf
The production technology of wheel improves Impeller Mass.
Summary of the invention
In view of the deficiencies of the prior art, the present invention intends to provide a kind of stainless steel that Impeller Shaping quality is high
Water pump vane full form casting process.
Above-mentioned technical purpose of the invention has the technical scheme that a kind of stainless steel water pump vane wheel is molten
Die cast technique, including cere molding, shell molding and impeller cast molding, wherein steps are as follows for shaping investment pattern:
Configured cured piece of pulverizing heating is melt into liquid to 80 DEG C ~ 95 DEG C, is subsequently poured into agitator by A1, keeps being in liquid
Shape La Shui；
A2, side stir cured waterside and cured powder are added, and keeping temperature is 45 DEG C ~ 65 DEG C, stir into paste, and when stirring goes up and down blender leaf
Wheel, convenient for beating paste；
A3 pours into paste cured material in injection molding machine, and injection molding machine is kept the temperature in advance at 45 DEG C ~ 65 DEG C；
The cured material of paste is injected into mold by A4, is infused cured air pressure and is maintained at 2.5 ~ 3.5 atmospheric pressure, fills 3 ~ 10 points of rear pressure maintaining
Clock, room temperature cooling 30 ~ 60 minutes, demoulding obtained cured type；
A5 carries out deburring to obtained cured type, scrapes off edge grinding；
Wax pattern is adhered on the cured stick of cast gate got ready with 150 DEG C of boiling hot knife and is fixed by A6；
Wherein, shell forming step is as follows:
The cured type fixed in above-mentioned A6 step is gently immersed in slurry, and rotates and move up and down repeatedly by B1, and slurry is applied
It smears uniformly, encounters aperture and dead angle and do not soak at slurry, mended and brushed with writing brush；
B2 rotates cured type, and the sand material that constantly winnows, and sand material is made to coat cured type completely, is placed in 20 DEG C ~ 25 DEG C environment and carries out
It is dry, slurry in above-mentioned steps B1 is repeated after cured type is dry and is coated, then step is dried, 5 times or more repeatedly；
Electric heating dewaxing kettle is heated to 150 DEG C using steam dewaxing by B3, and pressure is set as 0.7MPa, carries out dewaxing operation, is taken off
The wax time is 5min, from La Bangchu by cured blend-out formation shell chamber；
Shell chamber is placed in roaster and roasts by B4, and furnace temperature, which first rises, sets 250 DEG C, keeps the temperature 1 hour；Then it is rapidly heated to most
It is 880 DEG C high ~ 1000 DEG C, keep the temperature 1 hour；Finally, it is cooling stand-by to take out shell chamber when furnace temperature is cooled to 100 DEG C；
Wherein, steps are as follows for impeller cast molding:
C1 matches molten steel and 1600 DEG C of meltings, refining agent refining is added, and after square standing, alterant, slagging-off is added；
C2 pours fracture test check fracture, and adjusts the temperature of molten steel, carries out cast molding after fracture is qualified；
Cast is placed in shake sand machine and carries out shake sand by C3；
C4 cuts cap mouth, forms blank and clears up cap mouth and polishes；
Impeller merging shot-blasting machine is carried out smooth surface processing, shakeout by C5；
C6 carries out ingredient inspection, mechanical performance test to impeller, and will carry out radiographic inspection at impeller root after the assay was approved；
C7 polishes to qualified impeller flow-passing surface, removes workpiece surface burr；
C8 carries out roughing to the maximum outer circle of the impeller after above-mentioned polishing, choma, hub shaft hole；
C9, carries out the finishing of entrance side to the impeller after roughing, examines entrance cincture profile with formed template；
C10 carries out stress-removal heat treatment, and the impeller after roughing and finishing keeps the temperature 30-36 by 300 ± 10 DEG C of tempering heating
Hour, carry out low temperature stress-removal；
Impeller is immersed in pickling solution and carries out pickling by C11, removes surface contaminants and oxide skin；
C12 carries out smart polishing, finishing to impeller, and cleans impeller with washing oil, completes finished product.
Through the above technical solutions, wax powder is added in liquid wax material in shaping investment pattern step, convenient for paste wax material
It is formed, reduces mould material particle, improve the quality of paste wax material, be convenient for shaping investment pattern；Make to form by control above-mentioned steps simultaneously
Wax-pattern quality it is high；
It in shell forming step, is moved repeatedly when smearing slurry, can avoid slurry accumulation and part lacks and applies, while being conducive to gas
Body discharge；Sand material moisture content is needed lower than 0.3% during stucco, and herein, moisture content excessively easily causes shell to be layered；Water
Point content is too low is also easy to produce dust, and slurry is caused to be coated with difficulty；Be conducive to improve investment shell intensity using 0.3% moisture content, have
Effect prevents shell is dry from cracking when shrinking；By strictly regulating and controlling shell slurry applying step and drying temperature, it is conducive to be formed
The high shell of intensity；The impeller type of any surface finish, hardness and good air permeability is formed by control steam dewaxing and roasting technique
Chamber；
In impeller cast molding step, by control molten steel configuration, casting process, casting flaw detection and coarse-fine processing, Gao Pin is obtained
Matter impeller；
To sum up, by control shaping investment pattern, shell molding and three links of cast molding each technological parameter, obtain it is corrosion-resistant,
Durable stainless steel water pump vane wheel, ratio of defects is low, and quality is high.
Preferably, in the cere forming step A6, a cured stick of cast gate can be bonded several ceres.
Through the above technical solutions, being conducive to improve production efficiency.
Preferably, in the shell forming step in B2, sand material uses resistance to takasago, and sand material coats 5 layers altogether, every layer it is dry when
Between be set as 24 hours.
Through the above technical solutions, sufficient drying time is conducive to improve the intensity of shell when shell is dry.
Preferably, in the shell forming step B2, cured type is aweather blown when dry using each side simultaneously, wind speed setting
In 3 ~ 8m/s.
Through the above technical solutions, wind speed is faster, shell drying is faster, but wind speed is excessive can also dispel shell, using this
Wind speed, it is relatively reasonable；The wind of all directions blows certifiable shell uniform drying simultaneously simultaneously.
Preferably, the sand material coated outside cured type is gradually thicker to the granularity of outer layer sand material from internal layer.
Through the above technical solutions, being conducive to increase the discharge of internal gas when molten steel is cast, casting Forming Quality is improved.
Preferably, in the shell forming step B1, slurry is configured using silica solution and refractory material, in slurry bucket
It is inside put into quantitative silica solution, refractory material is added while stirring, stands 16 hours after the completion of slurry stirring for quick start blender
More than.
Through the above technical solutions, manufactured pulp quality is high, it is made conducive to the shell with some strength and gas permeability.
Preferably, in the impeller cast molding step C1, refining agent dosage is the 0.3% of molten steel gross mass, refining temperature
It is 750 DEG C, and is put into refining agent in three times, each refining time is 3 minutes, and total time controls the horizontal time in 15 minutes
It is 10 minutes.
Through the above technical solutions, being conducive to the removal of steel impurities in water.
Preferably, in the impeller cast molding step C1, alterant is slowly uniformly sprinkling upon on liquid steel level, is kept
10min ~ 12min, then pressure modifier agent slowly makes it invade alloy liquid level or less 100mm ~ 150mm, gentle uniformly mobile
3min~5min；Aluminium alloy surface slag is removed, gentle agitation liquid 1min ~ 2min removes the gred after standing 3min ~ 4min.
Through the above technical solutions, the removal of steel impurities in water is clean, casting product quality is high when molten steel is cast.
Preferably, in the impeller cast molding step C7, by the defect of defect detecting test, defect cleaning, PT flaw detection are carried out
It checks, aperture carries out repair welding by argon arc welding after qualification, and postwelding carries out rough grinding；Defect detecting test, counterweight are re-started to fault location
Big defect carries out solutionizing processing after carrying out electric welding repair welding.
Through the above technical solutions, being checked, being repaired to impeller defective products, production efficiency is greatly improved, reduces cost,
Control high yield quality.
Preferably, in the impeller cast molding step C9, impeller maximum outer circle, axis hole and choma outer circle single side are reserved
2mm, and opening width line is drawn in maximum outer circle, width of blade is modified by line.
Through the above technical solutions, roughing can ensure that impeller outlet position dimension precision reaches defined requirement, use
Mouth even width, error is small, guarantees in the drawing margin of tolerance, and a large amount of stress is generated inside the impeller casting after finishing and is passed through again
After crossing stress-removal heat treatment, low temperature stress-removal, stable dimensions, it is ensured that the dimensional accuracy after processing are carried out.
Advantages of the present invention effect is as follows:
1, stainless steel impeller corrosion resistance is strong, long service life；
2, molding wax-pattern quality is high, forms shell hardness and good permeability, mould casting ratio of defects are low；
3, roughing can ensure that impeller outlet position dimension precision reaches defined requirement, keep exit width uniform, and error is small, protect
Card is in the drawing margin of tolerance；
4, a large amount of stress is generated inside the impeller casting after roughing and finishing；After stress-removal is heat-treated, low temperature is carried out
Stress-removal, stable dimensions, it is ensured that the dimensional accuracy after processing；
Summary, the stainless steel water pump vane wheel that the present invention is processed, ratio of defects is low, and size distortion is small, and Impeller Machining dimensional accuracy is good,
Surface smoothness is high, and impeller service life is high.
Specific embodiment
Invention is further described in detail below.
A kind of stainless steel water pump vane wheel full form casting process, including cere molding, shell molding and impeller cast molding,
In, steps are as follows for shaping investment pattern:
A1 is ground into configured cured piece the irregular fritter of (20 ~ 40mm) × (20 ~ 40mm) and is heated to 80 DEG C ~ 95 DEG C and melts
Melt into liquid, be subsequently poured into agitator, keeps being in liquid La Shui.
A2, side stir cured waterside and cured powder are added, and keeping temperature is 45 DEG C ~ 65 DEG C, stir into paste, lifting stirring when stirring
Machine impeller, convenient for beating paste.Herein, wax powder is added in liquid wax material, convenient for the formation of paste wax material；The movement of impeller is conducive to
The mould material particle in paste wax material is reduced, the quality of paste wax material is improved.
A3 pours into paste cured material in injection molding machine, and injection molding machine is kept the temperature in advance at 45 DEG C ~ 65 DEG C.
A4 first checks mold before casting, and one layer of thin release agent is brushed on mold cavity, assembles mold, will paste
The cured material of shape is injected into mold, is infused cured air pressure and is maintained at 2.5 ~ 3.5 atmospheric pressure, fills rear pressure maintaining 3 ~ 10 minutes, room temperature cooling
30 ~ 60 minutes, demoulding obtained cured type.
A5 carries out deburring to obtained cured type, scrapes off edge grinding.
Wax pattern is adhered on the cured stick of cast gate got ready with 150 DEG C of boiling hot knife and is fixed by A6；Herein, a cast gate is cured
Stick can be bonded several ceres.Cast gate rod wax is in cross in the present embodiment, and each end bonds a wax-pattern, a cast gate
Rod wax bonds 4 wax-patterns.
Wherein, shell forming step is as follows:
The cured type fixed in above-mentioned A6 step is gently immersed in slurry, and rotates and move up and down repeatedly by B1, and slurry is applied
It smears uniformly, encounters aperture and dead angle and do not soak at slurry, mended and brushed with writing brush.Slurry using silica solution and refractory material configuration and
At.Refractory material is the basis for making shell, directly and melt contacts, zircon English, electro-corundum, vitreous silica, silicon can be selected
Sand etc. selects vitreous silica herein.
When making slurry, quantitative silica solution is put into slurry bucket, tekite is added in quick start blender while stirring
English, stand 16 hours after the completion of slurry stirring or more, slurry specific gravity is 2.1 ~ 2.3g/cm3 herein.It is adopted after the completion of slurry stirring
Slurry preservation is carried out with seal approach, prevents moisture from evaporating so that slurry is rotten.
B2 rotates cured type, and the sand material that constantly winnows, and sand material is made to coat cured type completely, is placed in 20 DEG C ~ 25 DEG C environment
It is dried.Sand material use high temperature resistant sand, sand material to be evenly coated after using each side aweather while the form blown, wind speed for 3 ~
It is dried in the environment of 8m/s, drying time is set as 24 hours.It repeats the above steps after primary drying and applies slurry again, spreads
Sand, drying carry out 5 times altogether, coat 5 layers.Herein, the sand material of coating is gradually thicker to the granularity of outer layer sand material from internal layer.
Herein, stucco is the intensity in order to improve shell, prevents shell from cracking in dry shrink.And sand used
Moisture content and dust require to control, contained dust and moisture content are required lower than 0.3%.
Electric heating dewaxing kettle is heated to 150 DEG C using steam dewaxing by B3, and pressure is set as 0.7MPa, carries out dewaxing work
Industry, the dewaxing time is 5min, from La Bangchu by cured blend-out formation shell chamber.
Shell chamber is placed in roaster and roasts by B4, and furnace temperature, which first rises, sets 250 DEG C, 1 hour is kept the temperature, to decompose shell
The wax of middle remnants；400 DEG C then are to slowly warm up to, continues heat preservation 1 hour；It is rapidly heated afterwards again to 880 DEG C ~ 1000 DEG C of highest,
Heat preservation 1 hour；Finally, it is cooling stand-by to take out shell chamber when furnace temperature is cooled to 100 DEG C.Shell any surface finish, hardness after roasting and
Gas permeability is good, flawless.
Wherein, steps are as follows for impeller cast molding:
C1 matches molten steel and 1600 DEG C of meltings, refining agent refining is added, after square standing.Herein, refining agent selects hexachloroethanc
Alkane, refining agent dosage are the 0.3% of molten steel gross mass, and refining temperature is 750 DEG C, and is put into refining agent in three times, every time when refining
Between be 3 minutes, total time control in 15 minutes, the horizontal time be 10 minutes.
After standing, alterant is slowly uniformly sprinkling upon on liquid steel level, keeps 10min ~ 12min, then pressure slowly
Alterant makes it invade alloy liquid level or less 100mm ~ 150mm, gentle uniformly mobile 3min ~ 5min；It is molten to remove aluminium alloy surface
Slag, gentle agitation liquid 1min ~ 2min remove the gred after standing 3min ~ 4min.
C2 pours fracture test check fracture, and adjusts the temperature of molten steel, carries out cast molding after fracture is qualified.
Cast is placed in shake sand machine and carries out shake sand, sand is made to be detached from cast surface by C3.
C4 cuts cap mouth, forms blank and clears up cap mouth and polishes.
Impeller merging shot-blasting machine is carried out smooth surface processing, using the shot of 0.5mm ~ 0.6mm granularity, carried out altogether twice by C5
Ball blast, half an hour is primary, sand remaining on impeller is removed clean.
C6 carries out ingredient inspection, mechanical performance test to impeller, and will be visited at impeller root after the assay was approved with RT ray
Wound；Remaining surface liquid penetrant inspection.
C7 polishes to qualified impeller flow-passing surface, removes workpiece surface burr.By the defect of defect detecting test, carry out scarce
Fall into cleaning, PT defect detecting test, it is qualified after aperture by argon arc welding carry out repair welding, postwelding carries out rough grinding；Fault location is re-started
Defect detecting test carries out solutionizing processing after carrying out electric welding repair welding to significant deficiency.
C8 carries out roughing to the maximum outer circle of the impeller after above-mentioned polishing, choma, hub shaft hole.
C9 carries out the finishing of entrance side to the impeller after roughing, and impeller maximum outer circle, axis hole and choma outer circle single side are reserved
2mm, and opening width line is drawn in maximum outer circle, width of blade is modified by line, examines entrance cincture profile with formed template.
C10 carries out stress-removal heat treatment, and the impeller after roughing and finishing is by 300 ± 10 DEG C of tempering heating, heat preservation
30-36 hours, carry out low temperature stress-removal.
Impeller is immersed in pickling solution and carries out pickling by C11, removes surface contaminants and oxide skin.
C12 carries out smart polishing, finishing to impeller, and cleans impeller with washing oil, completes finished product.
The defects of product completed the process is clear-cut, surface quality is good, no shrinkage cavity and porosity.Impeller high yield rate uses
Service life is long.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than limits the protection scope of invention.To the greatest extent
Invention is explained in detail referring to above-described embodiment for pipe, and those of ordinary skill in the art can not still make creation
Property labour modify to technical solution illustrated in the above embodiments, thus obtain it is different, essence without departing from of the invention
The other technologies scheme of design, these technical solutions similarly belong to invention which is intended to be protected.
Claims (10)
1. a kind of stainless steel water pump vane wheel full form casting process, including cere molding, shell molding and impeller cast molding, special
Sign is: steps are as follows for shaping investment pattern:
Configured cured piece of pulverizing heating is melt into liquid to 80 DEG C ~ 95 DEG C, is subsequently poured into agitator by A1, keeps being in liquid
Shape La Shui；
A2, side stir cured waterside and cured powder are added, and keeping temperature is 45 DEG C ~ 65 DEG C, stir into paste, and when stirring goes up and down blender leaf
Wheel, convenient for beating paste；
A3 pours into paste cured material in injection molding machine, and injection molding machine is kept the temperature in advance at 45 DEG C ~ 65 DEG C；
The cured material of paste is injected into mold by A4, is infused cured air pressure and is maintained at 2.5 ~ 3.5 atmospheric pressure, fills 3 ~ 10 points of rear pressure maintaining
Clock, room temperature cooling 30 ~ 60 minutes, demoulding obtained cured type；
A5 carries out deburring to obtained cured type, scrapes off edge grinding；
Wax pattern is adhered on the cured stick of cast gate got ready with 150 DEG C of boiling hot knife and is fixed by A6；
Shell forming step is as follows:
The cured type fixed in above-mentioned A6 step is gently immersed in slurry, and rotates and move up and down repeatedly by B1, and slurry is applied
It smears uniformly, encounters aperture and dead angle and do not soak at slurry, mended and brushed with writing brush；
B2 rotates cured type, and the sand material that constantly winnows, and sand material is made to coat cured type completely, is placed in 20 DEG C ~ 25 DEG C environment and carries out
It is dry, slurry in above-mentioned steps B1 is repeated after cured type is dry and is coated, then step is dried, 5 times or more repeatedly；
Electric heating dewaxing kettle is heated to 150 DEG C using steam dewaxing by B3, and pressure is set as 0.7MPa, carries out dewaxing operation, is taken off
The wax time is 5min, from La Bangchu by cured blend-out formation shell chamber；
Shell chamber is placed in roaster and roasts by B4, and furnace temperature, which first rises, sets 250 DEG C, keeps the temperature 1 hour；Then it is rapidly heated to most
It is 880 DEG C high ~ 1000 DEG C, keep the temperature 1 hour；Finally, it is cooling stand-by to take out shell chamber when furnace temperature is cooled to 100 DEG C；
Steps are as follows for impeller cast molding:
C1 matches molten steel and 1600 DEG C of meltings, refining agent refining is added, and after square standing, alterant, slagging-off is added；
C2 pours fracture test check fracture, and adjusts the temperature of molten steel, carries out cast molding after fracture is qualified；
Cast is placed in shake sand machine and carries out shake sand by C3；
C4 cuts cap mouth, forms blank and clears up cap mouth and polishes；
Impeller merging shot-blasting machine is carried out smooth surface processing, shakeout by C5；
C6 carries out ingredient inspection, mechanical performance test to impeller, and will carry out radiographic inspection at impeller root after the assay was approved；
C7 polishes to qualified impeller flow-passing surface, removes workpiece surface burr；
C8 carries out roughing to the maximum outer circle of the impeller after above-mentioned polishing, choma, hub shaft hole；
C9, carries out the finishing of entrance side to the impeller after roughing, examines entrance cincture profile with formed template；
Impeller is immersed in pickling solution and carries out pickling by C10, removes surface contaminants and oxide skin；
C11 carries out smart polishing, finishing to impeller, and cleans impeller with washing oil, completes finished product.
2. stainless steel water pump vane wheel full form casting process according to claim 1, it is characterized in that: the cere forming step
In A6, a cured stick of cast gate can be bonded several ceres.
3. stainless steel water pump vane wheel full form casting process according to claim 1, it is characterized in that: the shell forming step
In middle B2, sand material uses resistance to takasago, and sand material coats 5 layers altogether, and every layer of drying time is set as 24 hours.
4. stainless steel water pump vane wheel full form casting process according to claim 1, it is characterized in that: the shell forming step
In B2, cured type is aweather blown when dry using each side simultaneously, and wind speed is arranged in 3 ~ 8m/s.
5. stainless steel water pump vane wheel full form casting process according to claim 3, it is characterized in that: the sand material coated outside cured type
Granularity from internal layer to outer layer sand material is gradually thicker.
6. stainless steel water pump vane wheel full form casting process according to claim 1, it is characterized in that: the shell forming step
In B1, slurry is configured using silica solution and refractory material, and quantitative silica solution, quick start stirring are put into slurry bucket
Refractory material is added in machine while stirring, stand 16 hours after the completion of slurry stirring or more.
7. stainless steel water pump vane wheel full form casting process according to claim 1, it is characterized in that: the impeller cast molding
In step C1, refining agent dosage is the 0.3% of molten steel gross mass, and refining temperature is 750 DEG C, and is put into refining agent in three times, every time
Refining time is 3 minutes, and total time controlled in 15 minutes, and the horizontal time is 10 minutes.
8. stainless steel water pump vane wheel full form casting process according to claim 1, it is characterized in that: the impeller cast molding
In step C1, alterant is slowly uniformly sprinkling upon on liquid steel level, keeps 10min ~ 12min, then pressure modifier agent slowly makes
It invades alloy liquid level or less 100mm ~ 150mm, gentle uniformly mobile 3min ~ 5min；Aluminium alloy surface slag is removed, is slightly stirred
Liquid 1min ~ 2min is mixed, is removed the gred after standing 3min ~ 4min.
9. stainless steel water pump vane wheel full form casting process according to claim 1, it is characterized in that: the impeller cast molding
In step C7, by the defect of defect detecting test, carry out defect cleaning, PT defect detecting test, it is qualified after aperture by argon arc welding carry out repair welding,
Postwelding carries out rough grinding；Defect detecting test is re-started to fault location, is carried out at solutionizing after carrying out electric welding repair welding to significant deficiency
Reason.
10. stainless steel water pump vane wheel full form casting process according to claim 1, it is characterized in that: the impeller is cast into
In type step C9, impeller maximum outer circle, axis hole and choma outer circle single side reserve 2mm, and draw opening width line in maximum outer circle, press
Line modifies width of blade.
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| CN110523924A (en) * | 2019-09-17 | 2019-12-03 | 潍坊盛龙精密铸件有限公司 | The method of manufacturing technology and impeller of impeller |
| CN110614347A (en) * | 2019-11-06 | 2019-12-27 | 晋江渠成机械有限公司 | Investment casting process of fan-shaped impeller |
| CN110722326A (en) * | 2019-10-25 | 2020-01-24 | 浙江上风高科专风实业有限公司 | Production method based on closed centrifugal fan simulation test |
| CN111975303A (en) * | 2020-08-27 | 2020-11-24 | 西藏大学 | Method for manufacturing supporting seat for separating effective ingredients of plant medicines |
| CN112207510A (en) * | 2020-09-14 | 2021-01-12 | 襄阳顺特阳光科技有限公司 | Method for machining stainless steel intercooling air inlet pipe |
| CN113399624A (en) * | 2021-06-21 | 2021-09-17 | 贵阳一舟航科机械设备制造有限公司 | Machining method for aviation parts |
| CN113996761A (en) * | 2021-11-29 | 2022-02-01 | 江门市联益金属制品有限公司 | Manufacturing process of mixing core of static mixer |
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| CN110614347B (en) * | 2019-11-06 | 2020-11-20 | 晋江渠成机械有限公司 | Investment casting process of fan-shaped impeller |
| CN111975303A (en) * | 2020-08-27 | 2020-11-24 | 西藏大学 | Method for manufacturing supporting seat for separating effective ingredients of plant medicines |
| CN112207510A (en) * | 2020-09-14 | 2021-01-12 | 襄阳顺特阳光科技有限公司 | Method for machining stainless steel intercooling air inlet pipe |
| CN113399624A (en) * | 2021-06-21 | 2021-09-17 | 贵阳一舟航科机械设备制造有限公司 | Machining method for aviation parts |
| CN113996761A (en) * | 2021-11-29 | 2022-02-01 | 江门市联益金属制品有限公司 | Manufacturing process of mixing core of static mixer |
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