CN108326227A - A kind of mechanical gear surface coating technique - Google Patents
A kind of mechanical gear surface coating technique Download PDFInfo
- Publication number
- CN108326227A CN108326227A CN201711472704.9A CN201711472704A CN108326227A CN 108326227 A CN108326227 A CN 108326227A CN 201711472704 A CN201711472704 A CN 201711472704A CN 108326227 A CN108326227 A CN 108326227A
- Authority
- CN
- China
- Prior art keywords
- parts
- mechanical gear
- mold
- heating
- heating furnace
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
- B22D27/003—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting by using inert gases
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Gears, Cams (AREA)
Abstract
The invention discloses a kind of mechanical gear surface coating techniques, include the following steps：A, cleaning machinery gear；B, mold is put into heating furnace after mold bottom inserts one layer of precoated sand and is heated；C, the mechanical gear after cleaning is put into heating furnace and is preheated；D, the mechanical gear after preheating is put into mold, and inserts precoated sand again until filling up entire mold；E, entire mold is put into heating furnace and is heated, and be passed through nitrogen in a mold；F, it is put into after being later removed from the molds mechanical gear in coolant liquid cooling；G, it finally carries out repairing burr processing, the coating technique that the present invention uses can improve the overall mechanical properties of mechanical gear, extend its service life.
Description
Technical field
The present invention relates to film coating technique field, specially a kind of mechanical gear surface coating technique.
Background technology
Precoated sand foundry engieering originates from Germany earliest, is passed to China afterwards, but due to the property of this technology, mesh
Preceding precoated sand foundry engieering can only limit to production automobile cylinder cover, the thin-walled pump housing, thin-wall pipe etc. some small-sized thin-walleds productions in China
Product are the problem of being produced in terms of truck drive shaft parts using precoated sand foundry engieering：The nitrogen that shell generates is difficult to
Discharge, causes the problem more than product air holes, reduces the service life of gear.
Invention content
The purpose of the present invention is to provide a kind of mechanical gear surface coating techniques, to solve to propose in above-mentioned background technology
The problem of.
To achieve the above object, the present invention provides the following technical solutions：A kind of mechanical gear surface coating technique, including with
Lower step：
A, cleaning machinery gear：Mechanical gear is put into pickle and carries out pickling, is put into clear water flushes three times repeatedly later
After be put into 60 DEG C of thermostatic drying chambers dry 10min, take out for use；
B, it mold is put into heating furnace heating after mold bottom inserts one layer of precoated sand, heating temperature is 220 DEG C-
250 DEG C, heating time 20min-40min；
C, the mechanical gear after cleaning is put into heating furnace and is preheated, preheating temperature is 140 DEG C -160 DEG C, and preheating time is
10min-15min；
D, the mechanical gear after preheating is put into mold, and inserts precoated sand again until filling up entire mold；
E, entire mold is put into heating furnace and is heated, and be passed through nitrogen in a mold, heating temperature is 320 DEG C -360
DEG C, heating time 8min-12min；
F, it is put into after being later removed from the molds mechanical gear in coolant liquid cooling；
G, it finally carries out repairing burr processing.
Preferably, the precoated sand component in the step B in parts by weight include 30-50 parts of roughing sand, 10-20 parts of resin,
8-20 parts of coupling agent, 10-20 parts of methenamine, 5-12 parts of calcium stearate, 3-9 parts of iron oxide red, 2-8 parts of antiwelding agent, diatom
4-12 parts native, 3-10 parts of bentonite, 2-6 parts of graphite powder, 1-4 parts of lignin.
Preferably, the preferred composition proportion of precoated sand component includes 40 parts of roughing sand, 15 parts of resin, 14 parts of coupling agent, Wu Luo
15 parts of tropine, 10 parts of calcium stearate, 6 parts of iron oxide red, 5 parts of antiwelding agent, 8 parts of diatomite, 7 parts of bentonite, 4 parts of graphite powder,
3 parts of lignin.
Preferably, nitrogen intake is 10-30L/h in the step E, and it is 5min-7min to be passed through the time.
Compared with prior art, the beneficial effects of the invention are as follows：The coating technique that the present invention uses can improve mechanical tooth
The overall mechanical properties of wheel can improve the wear-resisting of mechanical gear, resistance to compression, antiseptic property, extend its service life；The present invention
In, it is passed through nitrogen in coating process, can effectively prevent mechanical gear surface from oxidative phenomena occur；In addition, being adopted in the present invention
Precoated sand has the advantages that high intensity, high temperature resistant, low thermal expansion, can effectively reduce gear surface and generate nitrogen pore, into one
Step improves compound film quality.
Specific implementation mode
The following is a clear and complete description of the technical scheme in the embodiments of the invention, it is clear that described embodiment
Only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, the common skill in this field
The every other embodiment that art personnel are obtained without making creative work belongs to the model that the present invention protects
It encloses.
Embodiment one：
The present invention provides the following technical solutions：A kind of mechanical gear surface coating technique, includes the following steps：
A, cleaning machinery gear：Mechanical gear is put into pickle and carries out pickling, is put into clear water flushes three times repeatedly later
After be put into 60 DEG C of thermostatic drying chambers dry 10min, take out for use；
B, mold is put into heating furnace after mold bottom inserts one layer of precoated sand and is heated, heating temperature is 220 DEG C, is added
The hot time is 20min；
C, the mechanical gear after cleaning is put into heating furnace and is preheated, preheating temperature is 140 DEG C, preheating time 10min；
D, the mechanical gear after preheating is put into mold, and inserts precoated sand again until filling up entire mold；
E, entire mold is put into heating furnace and is heated, and be passed through nitrogen in a mold, heating temperature is 320 DEG C, heating
Time is 8min；
F, it is put into after being later removed from the molds mechanical gear in coolant liquid cooling；
G, it finally carries out repairing burr processing.
In the present embodiment, the precoated sand component in step B includes 30 parts of roughing sand, 10 parts of resin, coupling agent 8 in parts by weight
Part, 10 parts of methenamine, 5 parts of calcium stearate, 3 parts of iron oxide red, 2 parts of antiwelding agent, 4 parts of diatomite, 3 parts of bentonite, graphite
2 parts of powder, 1 part of lignin.
In the present embodiment, nitrogen intake is 10L/h in step E, and it is 5min to be passed through the time.
Embodiment two：
A kind of mechanical gear surface coating technique, includes the following steps：
A, cleaning machinery gear：Mechanical gear is put into pickle and carries out pickling, is put into clear water flushes three times repeatedly later
After be put into 60 DEG C of thermostatic drying chambers dry 10min, take out for use；
B, mold is put into heating furnace after mold bottom inserts one layer of precoated sand and is heated, heating temperature is 250 DEG C, is added
The hot time is 40min；
C, the mechanical gear after cleaning is put into heating furnace and is preheated, preheating temperature is 160 DEG C, preheating time 15min；
D, the mechanical gear after preheating is put into mold, and inserts precoated sand again until filling up entire mold；
E, entire mold is put into heating furnace and is heated, and be passed through nitrogen in a mold, heating temperature is 360 DEG C, heating
Time is 12min；
F, it is put into after being later removed from the molds mechanical gear in coolant liquid cooling；
G, it finally carries out repairing burr processing.
In the present embodiment, the precoated sand component in step B includes 50 parts of roughing sand, 20 parts of resin, coupling agent in parts by weight
20 parts, 20 parts of methenamine, 12 parts of calcium stearate, 9 parts of iron oxide red, 8 parts of antiwelding agent, 12 parts of diatomite, 10 parts of bentonite,
6 parts of graphite powder, 4 parts of lignin.
In the present embodiment, nitrogen intake is 30L/h in step E, and it is 7min to be passed through the time.
Embodiment three：
A kind of mechanical gear surface coating technique, includes the following steps：
A, cleaning machinery gear：Mechanical gear is put into pickle and carries out pickling, is put into clear water flushes three times repeatedly later
After be put into 60 DEG C of thermostatic drying chambers dry 10min, take out for use；
B, mold is put into heating furnace after mold bottom inserts one layer of precoated sand and is heated, heating temperature is 225 DEG C, is added
The hot time is 25min；
C, the mechanical gear after cleaning is put into heating furnace and is preheated, preheating temperature is 145 DEG C, preheating time 12min；
D, the mechanical gear after preheating is put into mold, and inserts precoated sand again until filling up entire mold；
E, entire mold is put into heating furnace and is heated, and be passed through nitrogen in a mold, heating temperature is 330 DEG C, heating
Time is 9min；
F, it is put into after being later removed from the molds mechanical gear in coolant liquid cooling；
G, it finally carries out repairing burr processing.
In the present embodiment, the precoated sand component in step B includes 35 parts of roughing sand, 12 parts of resin, coupling agent in parts by weight
10 parts, 12 parts of methenamine, 8 parts of calcium stearate, 4 parts of iron oxide red, 3 parts of antiwelding agent, 6 parts of diatomite, 5 parts of bentonite, stone
3 parts of ink powder, 2 parts of lignin.
In the present embodiment, nitrogen intake is 13L/h in step E, and it is 5min to be passed through the time.
Example IV：
A kind of mechanical gear surface coating technique, includes the following steps：
A, cleaning machinery gear：Mechanical gear is put into pickle and carries out pickling, is put into clear water flushes three times repeatedly later
After be put into 60 DEG C of thermostatic drying chambers dry 10min, take out for use；
B, mold is put into heating furnace after mold bottom inserts one layer of precoated sand and is heated, heating temperature is 245 DEG C, is added
The hot time is 35min；
C, the mechanical gear after cleaning is put into heating furnace and is preheated, preheating temperature is 155 DEG C, preheating time 14min；
D, the mechanical gear after preheating is put into mold, and inserts precoated sand again until filling up entire mold；
E, entire mold is put into heating furnace and is heated, and be passed through nitrogen in a mold, heating temperature is 355 DEG C, heating
Time is 11min；
F, it is put into after being later removed from the molds mechanical gear in coolant liquid cooling；
G, it finally carries out repairing burr processing.
In the present embodiment, the precoated sand component in step B includes 45 parts of roughing sand, 17 parts of resin, coupling agent in parts by weight
17 parts, 16 parts of methenamine, 11 parts of calcium stearate, 8 parts of iron oxide red, 7 parts of antiwelding agent, 10 parts of diatomite, 9 parts of bentonite,
6 parts of graphite powder, 3 parts of lignin.
In the present embodiment, nitrogen intake is 25L/h in step E, and it is 7min to be passed through the time.
Embodiment five：
A kind of mechanical gear surface coating technique, includes the following steps：
A, cleaning machinery gear：Mechanical gear is put into pickle and carries out pickling, is put into clear water flushes three times repeatedly later
After be put into 60 DEG C of thermostatic drying chambers dry 10min, take out for use；
B, it mold is put into heating furnace heating after mold bottom inserts one layer of precoated sand, heating temperature is 220 DEG C-
250 DEG C, heating time 20min-40min；
C, the mechanical gear after cleaning is put into heating furnace and is preheated, preheating temperature is 140 DEG C -160 DEG C, and preheating time is
10min-15min；
D, the mechanical gear after preheating is put into mold, and inserts precoated sand again until filling up entire mold；
E, entire mold is put into heating furnace and is heated, and be passed through nitrogen in a mold, heating temperature is 320 DEG C -360
DEG C, heating time 8min-12min；
F, it is put into after being later removed from the molds mechanical gear in coolant liquid cooling；
G, it finally carries out repairing burr processing.
In the present embodiment, the preferred composition proportion of precoated sand component include 40 parts of roughing sand, 15 parts of resin, 14 parts of coupling agent,
15 parts of methenamine, 10 parts of calcium stearate, 6 parts of iron oxide red, 5 parts of antiwelding agent, 8 parts of diatomite, 7 parts of bentonite, graphite powder 4
Part, 3 parts of lignin
In the present embodiment, nitrogen intake is 20L/h in step E, and it is 6min to be passed through the time.
In conclusion the coating technique that the present invention uses can improve the overall mechanical properties of mechanical gear, can improve
The wear-resisting of mechanical gear, resistance to compression, antiseptic property extend its service life；In the present invention, nitrogen, energy are passed through in coating process
It is enough effectively to prevent mechanical gear surface from oxidative phenomena occur；In addition, the precoated sand used in the present invention has high intensity, resistance to height
The advantages of temperature, low thermal expansion, can effectively reduce gear surface and generate nitrogen pore, further improve compound film quality.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding without departing from the principles and spirit of the present invention can carry out these embodiments a variety of variations, modification, replace
And modification, the scope of the present invention is defined by the appended.
Claims (4)
1. a kind of mechanical gear surface coating technique, it is characterised in that：Include the following steps：
A, cleaning machinery gear：Mechanical gear is put into pickle and carries out pickling, is put into clear water flushes three times repeatedly later
After be put into 60 DEG C of thermostatic drying chambers dry 10min, take out for use；
B, it mold is put into heating furnace heating after mold bottom inserts one layer of precoated sand, heating temperature is 220 DEG C-
250 DEG C, heating time 20min-40min；
C, the mechanical gear after cleaning is put into heating furnace and is preheated, preheating temperature is 140 DEG C -160 DEG C, and preheating time is
10min-15min；
D, the mechanical gear after preheating is put into mold, and inserts precoated sand again until filling up entire mold；
E, entire mold is put into heating furnace and is heated, and be passed through nitrogen in a mold, heating temperature is 320 DEG C -360
DEG C, heating time 8min-12min；
F, it is put into after being later removed from the molds mechanical gear in coolant liquid cooling；
G, it finally carries out repairing burr processing.
2. a kind of mechanical gear surface coating technique according to claim 1, it is characterised in that：Covering in the step B
Film sand component in parts by weight include 30-50 part of roughing sand, 10-20 parts of resin, 8-20 parts of coupling agent, 10-20 parts of methenamine, firmly
5-12 parts of resin acid calcium, 3-9 parts of iron oxide red, 2-8 parts of antiwelding agent, 4-12 parts of diatomite, 3-10 parts of bentonite, graphite powder 2-6
Part, 1-4 parts of lignin.
3. a kind of mechanical gear surface coating technique according to claim 2, it is characterised in that：Precoated sand component is preferred
Composition proportion includes 40 parts of roughing sand, 15 parts of resin, 14 parts of coupling agent, 15 parts of methenamine, 10 parts of calcium stearate, iron oxide red 6
Part, 5 parts of antiwelding agent, 8 parts of diatomite, 7 parts of bentonite, 4 parts of graphite powder, 3 parts of lignin.
4. a kind of mechanical gear surface coating technique according to claim 1, it is characterised in that：Nitrogen in the step E
Intake is 10-30L/h, and it is 5min-7min to be passed through the time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711472704.9A CN108326227A (en) | 2017-12-29 | 2017-12-29 | A kind of mechanical gear surface coating technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711472704.9A CN108326227A (en) | 2017-12-29 | 2017-12-29 | A kind of mechanical gear surface coating technique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108326227A true CN108326227A (en) | 2018-07-27 |
Family
ID=62924429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711472704.9A Pending CN108326227A (en) | 2017-12-29 | 2017-12-29 | A kind of mechanical gear surface coating technique |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108326227A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110098127A (en) * | 2019-04-04 | 2019-08-06 | 苏州超樊电子有限公司 | Single bridge wire frame debarring process |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104233293A (en) * | 2014-08-25 | 2014-12-24 | 无锡普瑞腾传动机械有限公司 | Gear surface coating technique |
| CN107377864A (en) * | 2017-07-25 | 2017-11-24 | 江苏亚威铸造材料科技有限公司 | Dustless processing technology of precoated sand and preparation method thereof |
-
2017
- 2017-12-29 CN CN201711472704.9A patent/CN108326227A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104233293A (en) * | 2014-08-25 | 2014-12-24 | 无锡普瑞腾传动机械有限公司 | Gear surface coating technique |
| CN107377864A (en) * | 2017-07-25 | 2017-11-24 | 江苏亚威铸造材料科技有限公司 | Dustless processing technology of precoated sand and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 王忠诚等: "《热处理工实用手册》", 31 January 2013 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110098127A (en) * | 2019-04-04 | 2019-08-06 | 苏州超樊电子有限公司 | Single bridge wire frame debarring process |
| CN110098127B (en) * | 2019-04-04 | 2020-12-04 | 苏州超樊电子有限公司 | Single bridge wire frame deburring process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102554125B (en) | Precision casting method of aluminum gearbox | |
| CN110170614B (en) | Precoated sand shell mold casting process | |
| CN101172302A (en) | Modified silicate-bonded sand temperature core box core-producing technique | |
| CN102366812A (en) | Preparation method for sodium silicate sand used for casting | |
| CN103722125A (en) | Method for casting automobile axle housing by V method | |
| CN1493414A (en) | Method of casting loading machine large speed changing box body using vanishing mould | |
| CN106077498A (en) | A kind of core manufacturing craft of diesel engine cylinder block | |
| CN114054673B (en) | 3DP preparation method of integral sand mold | |
| CN101658918A (en) | Water glass type magnesium alloy fusible pattern casting process | |
| CN101352860A (en) | Modification technique of synthetic resin impregnated timber | |
| CN104785709A (en) | Precoated sand for casting and preparation method thereof | |
| CN101185963A (en) | Vanishing mould casting technique of blast furnace cooling wall | |
| CN103658534A (en) | Negative-pressure precision casting process of cold-mold protective shell | |
| CN104985118A (en) | Method for casting and producing glass mould roughcast by V-process molding process | |
| CN103586416A (en) | Fluoride-free exothermic insulating riser and preparation method thereof | |
| CN106111913A (en) | A kind of flange casting technique | |
| CN111889616B (en) | Curing agent for casting and application thereof | |
| CN108326227A (en) | A kind of mechanical gear surface coating technique | |
| CN101875092A (en) | Cast production technology for shell | |
| CN105964907A (en) | Hot-core box precoated sand casting technology of motor end cover | |
| CN107790678A (en) | A kind of biliquid composite casting method for automobile die cast | |
| CN103286276B (en) | Technology for casting motor shell | |
| CN104289663B (en) | A kind of high temperature resistant repair paint | |
| CN108555245A (en) | A kind of film covered sand core production technology preparing 9DF cylinder head upper interlayers | |
| CN104014740B (en) | A kind of method improving microwave heating waterglass sand mold resistance to water soak |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180727 |