CN108953583B - Control lever and manufacturing method thereof - Google Patents
Control lever and manufacturing method thereof Download PDFInfo
- Publication number
- CN108953583B CN108953583B CN201710351098.9A CN201710351098A CN108953583B CN 108953583 B CN108953583 B CN 108953583B CN 201710351098 A CN201710351098 A CN 201710351098A CN 108953583 B CN108953583 B CN 108953583B
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- China
- Prior art keywords
- joystick
- lever
- connecting end
- welding
- control rod
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- 238000003466 welding Methods 0.000 claims abstract description 50
- 238000002347 injection Methods 0.000 claims abstract description 27
- 239000007924 injection Substances 0.000 claims abstract description 27
- 239000000843 powder Substances 0.000 claims abstract description 27
- 238000003754 machining Methods 0.000 claims abstract description 18
- 238000005238 degreasing Methods 0.000 claims description 20
- 239000011230 binding agent Substances 0.000 claims description 12
- -1 polyoxymethylene Polymers 0.000 claims description 11
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 8
- 238000000465 moulding Methods 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 230000003197 catalytic effect Effects 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 229910000679 solder Inorganic materials 0.000 claims description 6
- 229930040373 Paraformaldehyde Natural products 0.000 claims description 4
- 239000004698 Polyethylene Substances 0.000 claims description 4
- 235000021355 Stearic acid Nutrition 0.000 claims description 4
- 229910052786 argon Inorganic materials 0.000 claims description 4
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 4
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 4
- 239000012188 paraffin wax Substances 0.000 claims description 4
- 229920000573 polyethylene Polymers 0.000 claims description 4
- 229920006324 polyoxymethylene Polymers 0.000 claims description 4
- 238000005245 sintering Methods 0.000 claims description 4
- 239000008117 stearic acid Substances 0.000 claims description 4
- 239000004743 Polypropylene Substances 0.000 claims description 3
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical group ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 claims description 3
- 238000005219 brazing Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 239000003960 organic solvent Substances 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 150000003839 salts Chemical class 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- UBOXGVDOUJQMTN-UHFFFAOYSA-N trichloroethylene Natural products ClCC(Cl)Cl UBOXGVDOUJQMTN-UHFFFAOYSA-N 0.000 claims description 3
- 238000005476 soldering Methods 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims 1
- 230000004907 flux Effects 0.000 description 3
- 238000001746 injection moulding Methods 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 229910001297 Zn alloy Inorganic materials 0.000 description 2
- 238000004512 die casting Methods 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 238000010146 3D printing Methods 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000005495 investment casting Methods 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/02—Selector apparatus
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/10—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/10—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material
- B22F1/103—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material containing an organic binding agent comprising a mixture of, or obtained by reaction of, two or more components other than a solvent or a lubricating agent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/1017—Multiple heating or additional steps
- B22F3/1021—Removal of binder or filler
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/22—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip
- B22F3/225—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip by injection molding
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Control Devices (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention provides a joystick and a manufacturing method thereof, wherein the joystick comprises: a joystick lower portion and a joystick upper portion; the lower part of the control rod is provided with a fork pulling end and a lower connecting end, the lower part of the control rod is integrally formed in a powder injection mode, the upper part of the control rod is provided with an upper connecting end, the upper part of the control rod is formed in a machining mode, the upper connecting end of the upper part of the control rod is connected with the lower connecting end of the lower part of the control rod in a welding mode, the upper connecting end of the upper part of the control rod is provided with a first step structure, the lower connecting end of the lower part of the control rod is provided with a second step structure, the first step structure is matched with the lower connecting end, and the second step structure is matched with the upper connecting end. In the invention, the lower part of the control lever is integrally formed in a powder injection mode, the upper part of the control lever is formed in a machining mode, and the lower part of the control lever is connected with the upper part of the control lever in a welding mode.
Description
Technical Field
The invention relates to the technical field of automobile parts, in particular to an operating lever for automobile gear shifting and a manufacturing method thereof.
Background
Currently, levers for gear shifting of automobiles are generally produced by production methods such as turning, milling, CNC, 3D printing and the like, and the levers have the problems of low efficiency and high cost. In order to solve the above problems, the method of die casting can be adopted, however, the method of die casting zinc alloy or aluminum alloy also has the problems that the performance of the product cannot meet the requirements, and the performance of the zinc alloy and the aluminum alloy cannot reach the level of steel. In addition, if the product is manufactured by precision casting, the precision cannot be achieved at one time, and a large amount of subsequent processing is required.
In view of this, it is necessary to propose further solutions to the above-mentioned problems.
Disclosure of Invention
The invention aims to provide a control rod and a manufacturing method thereof, which are used for overcoming the defects in the prior art.
To achieve the above object, the present invention provides a joystick comprising: a lever lower part and a lever upper part connected to one end of the lever lower part;
the utility model discloses a powder injection device, including control lever, upper connecting end, lower connecting end, first step structure, second step structure and upper connecting end, the control lever lower part has a fork end and lower connecting end, the control lever lower part is through powder injection mode integrated into one piece, control lever upper portion has an upper connecting end, control lever upper portion is through machining's mode machine tooling shaping, the upper connecting end on control lever upper portion with the lower connecting end on control lever lower part is connected through the welding mode, the upper connecting end on control lever upper portion is provided with first step structure, the lower connecting end on control lever lower part is provided with the second step structure, first step structure with lower connecting end cooperatees, the second step structure with upper connecting end cooperatees.
As an improvement of the joystick of the invention, the welding is one of laser welding, argon arc welding and brazing.
As an improvement of the joystick of the invention, the matching part of the upper connecting end and the second step structure is filled with welding flux for welding.
As an improvement of the joystick, when the welding is laser welding, the welding flux is a welding wire with the thickness of 0.2-2.0 mm; the solder is a welding wire with the thickness of 0.5-2.0 mm.
As an improvement of the operating lever, the upper end of the upper part of the operating lever is also provided with two screw holes for assembly and fixation.
As an improvement of the joystick of the present invention, the joystick further has a through hole provided in a length direction of the joystick so as to penetrate both an upper portion and a lower portion of the joystick.
In order to achieve the above object, the present invention provides a method for manufacturing a joystick, comprising: a lever lower part and a lever upper part connected to one end of the lever lower part;
the manufacturing method of the control lever comprises the following steps:
the lower part of the operating rod is integrally formed in a powder injection mode;
machining and forming the upper part of the control rod in a machining mode;
and connecting the obtained upper part of the operating rod with the lower part of the operating rod in a welding mode.
As an improvement of the manufacturing method of the joystick of the present invention, the integrally molding the lower portion of the joystick by powder injection includes:
s1, providing molding powder, and carrying out mixing and granulating treatment on the molding powder;
s2, carrying out powder injection on the treated powder and a binder system at the temperature of 190-200 ℃ to obtain an injection blank, wherein the binder system comprises the following components in parts by weight: 10-20% of paraffin, 60-90% of polyoxymethylene, 3-15% of polypropylene, 2-20% of polyethylene and 1-5% of stearic acid;
s3, performing preliminary degreasing treatment on the obtained injection blank by using an organic solvent, wherein the degreasing method is to soak the injection blank for 5-8 hours by using trichloroethylene at the temperature of 30-40 ℃;
s4, carrying out catalytic degreasing on the injection blank subjected to the preliminary degreasing treatment in a degreasing furnace at 120 ℃ for 4-6 hours;
s5, sintering the degreased blank at a high temperature of 1250-1350 ℃ and performing heat treatment to obtain the lower part of the HRC35-45 control rod.
As an improvement of the manufacturing method of the joystick of the present invention, the machining and shaping the upper portion of the joystick by means of machining includes:
providing a steel pipe with a selected material, and machining the steel pipe according to the assembly and use requirements.
As an improvement of the manufacturing method of the joystick of the present invention, the connecting by welding includes:
s1', aligning welding ends of the upper part of the operating lever and the lower part of the operating lever, and welding the welding ends of the upper part of the operating lever and the lower part of the operating lever according to a selected welding mode;
s2', carrying out surface spraying Dacromet treatment on the welded operating rod, and coating a uniform coating to obtain an operating rod finished product meeting the salt spray test of 72 h.
Compared with the prior art, the invention has the beneficial effects that: in the control lever, the lower part of the control lever is integrally formed in a powder injection mode, the upper part of the control lever is machined and formed in a machining mode, and the lower part of the control lever is connected with the upper part of the control lever in a welding mode.
Drawings
FIG. 1 is a schematic plan view of an embodiment of a joystick of the invention;
FIG. 2 is a cross-sectional view taken along the direction A-A in FIG. 1;
fig. 3 is an enlarged schematic view of the circled portion of fig. 2.
Detailed Description
The present invention will be described in detail below with reference to the embodiments shown in the drawings, but it should be understood that the embodiments are not limited to the present invention, and functional, method, or structural equivalents and alternatives according to the embodiments are within the scope of protection of the present invention by those skilled in the art.
As shown in fig. 1, the joystick of the present invention is applied to an automobile to realize a shift in driving, and specifically includes: a lower lever portion 10 and an upper lever portion 20 connected to one end of the lower lever portion 10.
Wherein the lower lever portion 10 is used to effect mounting of the lever and connection to the upper lever portion 20. The device is used for providing power and has certain strength requirement, and can stir 2kg of objects for 120 ten thousand times without breaking.
Specifically, the lever lower part 10 has a fork end 11 and a lower connecting end 12. The fork end 11 is connected with other structures in the automobile, in order to meet the connection requirement, the fork end 11 comprises a first fork connecting end 110 and a second fork connecting end 111 integrally extending from one side of the first fork connecting end 110, and the second fork connecting end 111 has a U-shaped structure. The lever lower part 10 is preferably integrally formed by powder injection in view of its relatively complicated structure and manufacturability.
The lever upper part 20 has an upper connecting end 21, through which upper connecting end 21 the lever upper part 20 is connected to the lower connecting end 12 of the lever lower part 10. The lever upper portion 20 is a tubular structure that allows the lever to be held by a human hand. Thus, the lever upper 20 is formed by machining in view of the relatively simple structure and manufacturability of the lever upper 20. In addition, the upper end of the lever upper part 20 is provided with two screw holes for assembly and fixation.
As shown in fig. 2 and 3, in order to achieve the connection between the lever lower part 10 and the lever upper part 20, the upper connection end 21 of the lever upper part 20 is connected with the lower connection end of the lever lower part 10 by welding. Meanwhile, in order to facilitate the assembly and positioning of the lever lower part 10 and the lever upper part 20, the upper connection end 21 of the lever upper part 20 is provided with a first step structure 31, and the lower connection end of the lever lower part 10 is provided with a second step structure 32. When the lever lower part 10 is assembled with the lever upper part 20, the first step structure 31 is mated with the lower connecting end 12, and the second step structure 32 is mated with the upper connecting end 21. At the same time, the strength of the connection between the lower lever part 10 and the upper lever part 20 is also increased by the above-mentioned step structures 31, 32, since the above-mentioned step structures 31, 32 also act as a connection and transmission force during the handling of the gear by the hand when the lever is finally assembled on the vehicle.
Further, the mating portion of the upper connection end 21 and the second step structure is filled with solder 40 for soldering. The welding is one of laser welding, argon arc welding and brazing. Thus, when laser welding is used between the lower lever portion 10 and the upper lever portion 20, the solder is a wire of 0.2-2.0 mm. When argon arc welding is adopted between the lower operating rod part 10 and the upper operating rod part 20, the welding flux is welding wire with the thickness of 0.5-2.0 mm. In addition, in order to facilitate welding of the filler, the mating parts of the upper connecting end 21 and the second step structure are respectively provided with a chamfer angle of 45 degrees.
In addition, the lever further has a through hole provided in the length direction of the lever, which penetrates both the lever upper part 20 and the lever lower part 10, and through which a control line passing through the automobile after the assembly welding of the lever upper part 20 and the lever lower part 10 is facilitated.
Based on the joystick as described above, the invention also provides a manufacturing method of the joystick. Specifically, the joystick of the present invention includes: a powder injection molding step of the lower part of the operating lever, a machining step of the upper part of the operating lever, and a welding step of the lower part of the operating lever and the upper part of the operating lever. The powder injection molding step of the lower portion of the lever includes:
s1, providing molding powder, and carrying out mixing and granulating treatment on the molding powder.
S2, carrying out powder injection on the treated powder and a binder system at the temperature of 190-200 ℃ to obtain an injection blank, wherein the binder system comprises the following components in parts by weight: 10-20% of paraffin, 60-90% of polyoxymethylene, 3-15% of polypropylene, 2-20% of polyethylene and 1-5% of stearic acid.
Wherein the above-mentioned binder system is used as a carrier for injection molding of the treated powder. The binder system with the components improves the fluidity of the binder, improves the recycling times of feeding and improves the subsequent degreasing efficiency.
S3, performing preliminary degreasing treatment on the injection blank by using an organic solvent, wherein the degreasing method is to soak the injection blank for 5-8 hours by using trichloroethylene at the temperature of 30-40 ℃.
The purpose of step S3 is to remove paraffin in the binder, and provide a path for nitric acid to enter and exit for subsequent catalytic degreasing. Specifically, pores are provided for subsequent catalytic degreasing in a preliminary degreasing treatment mode, so that the catalytic degreasing speed can be doubled, and particularly, a product with a thicker wall thickness is provided for serialization.
S4, carrying out catalytic degreasing on the injection blank subjected to the preliminary degreasing treatment in a degreasing furnace at 120 ℃ for 4-6 h.
The purpose of step S4 is to remove the polyoxymethylene in the binder, and polyethylene and stearic acid remain in the product, so that the product can be provided with handling strength, and the remaining binder can be removed at a high temperature before subsequent sintering.
S5, sintering the degreased blank at a high temperature of 1250-1350 ℃ and performing heat treatment to obtain the lower part of the HRC35-45 control rod.
The machining step of the upper part of the operating rod comprises the following steps:
s1', providing a steel pipe with a selected material, and machining the steel pipe according to the assembly and use requirements, such as turning, milling, planing, inserting and the like, so as to obtain the upper part of the control rod.
The welding step of the lower part of the operating rod and the upper part of the operating rod comprises the following steps:
s1', aligning welding ends of the upper part of the operating lever and the lower part of the operating lever, and welding the welding ends of the upper part of the operating lever and the lower part of the operating lever according to a selected welding mode;
s2', carrying out surface spraying Dacromet treatment on the welded operating rod, and coating a uniform coating to obtain an operating rod finished product meeting the salt spray test of 72 h.
In summary, in the joystick of the present invention, the lower portion of the joystick is integrally formed by powder injection, the upper portion of the joystick is formed by machining, and the lower portion of the joystick is connected to the upper portion of the joystick by welding.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (10)
1. A joystick, said joystick comprising: a lever lower part and a lever upper part connected to one end of the lever lower part;
the lower part of the operating rod is provided with a fork pulling end and a lower connecting end, the lower part of the operating rod is integrally formed in a powder injection mode, the upper part of the operating rod is provided with an upper connecting end, the fork pulling end comprises a first fork pulling connecting end and a second fork pulling connecting end which integrally extends from one side of the first fork pulling connecting end, and the second fork pulling connecting end is provided with a U-shaped structure; the upper connecting end of the upper portion of the control rod is connected with the lower connecting end of the lower portion of the control rod in a welding mode, a first step structure is arranged at the upper connecting end of the upper portion of the control rod, a second step structure is arranged at the lower connecting end of the lower portion of the control rod, the first step structure is matched with the lower connecting end, and the second step structure is matched with the upper connecting end.
2. The joystick of claim 1, wherein said welding is one of laser welding, argon arc welding, brazing.
3. The joystick according to claim 1 or 2, characterized in that the junction of the upper connection end and the second step structure is filled with solder for soldering.
4. The joystick of claim 3 wherein when said welding is laser welding, said solder is a 0.2-2.0mm wire; the solder is a welding wire with the thickness of 0.5-2.0 mm.
5. The joystick of claim 1, wherein the upper end of the upper portion of the joystick is further provided with two screw holes for assembly and fixation.
6. The joystick of claim 1, wherein said joystick further has a through hole provided along a length direction of the joystick penetrating both an upper portion of the joystick and a lower portion of the joystick.
7. A method of manufacturing a joystick according to any one of claims 1 to 6, wherein said joystick comprises: a lever lower part and a lever upper part connected to one end of the lever lower part;
the manufacturing method of the control lever comprises the following steps:
the lower part of the operating rod is integrally formed in a powder injection mode;
machining and forming the upper part of the control rod in a machining mode;
and connecting the obtained upper part of the operating rod with the lower part of the operating rod in a welding mode.
8. The method of manufacturing a joystick of claim 7, wherein said integrally molding said joystick lower portion by powder injection comprises:
s1, providing molding powder, and carrying out mixing and granulating treatment on the molding powder;
s2, carrying out powder injection on the treated powder and a binder system at the temperature of 190-200 ℃ to obtain an injection blank, wherein the binder system comprises the following components in parts by weight: 10-20% of paraffin, 60-90% of polyoxymethylene, 3-15% of polypropylene, 2-20% of polyethylene and 1-5% of stearic acid;
s3, performing preliminary degreasing treatment on the obtained injection blank by using an organic solvent, wherein the degreasing method is to soak the injection blank for 5-8 hours by using trichloroethylene at the temperature of 30-40 ℃;
s4, carrying out catalytic degreasing on the injection blank subjected to the preliminary degreasing treatment in a degreasing furnace at 120 ℃ for 4-6 hours;
s5, sintering the degreased blank at a high temperature of 1250-1350 ℃ and performing heat treatment to obtain the lower part of the HRC35-45 control rod.
9. The method of manufacturing a joystick of claim 7, wherein said machining said joystick upper portion comprises:
providing a steel pipe with a selected material, and machining the steel pipe according to the assembly and use requirements.
10. The method of manufacturing a joystick of claim 7, wherein said connecting by welding comprises:
s1', aligning welding ends of the upper part of the operating lever and the lower part of the operating lever, and welding the welding ends of the upper part of the operating lever and the lower part of the operating lever according to a selected welding mode;
s2', carrying out surface spraying Dacromet treatment on the welded operating rod, and coating a uniform coating to obtain an operating rod finished product meeting the salt spray test of 72 h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710351098.9A CN108953583B (en) | 2017-05-18 | 2017-05-18 | Control lever and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710351098.9A CN108953583B (en) | 2017-05-18 | 2017-05-18 | Control lever and manufacturing method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN108953583A CN108953583A (en) | 2018-12-07 |
| CN108953583B true CN108953583B (en) | 2024-04-05 |
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| CN201710351098.9A Active CN108953583B (en) | 2017-05-18 | 2017-05-18 | Control lever and manufacturing method thereof |
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