CN104530805A - Method for preparing thinner added to coating layer for drawing formation of car sheet metal part - Google Patents
Method for preparing thinner added to coating layer for drawing formation of car sheet metal part Download PDFInfo
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- CN104530805A CN104530805A CN201410845824.9A CN201410845824A CN104530805A CN 104530805 A CN104530805 A CN 104530805A CN 201410845824 A CN201410845824 A CN 201410845824A CN 104530805 A CN104530805 A CN 104530805A
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- thinner
- diethylene glycol
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/20—Diluents or solvents
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Laminated Bodies (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Paints Or Removers (AREA)
Abstract
The invention discloses a method for preparing thinner added to a coating layer for drawing formation of a car sheet metal part, and belongs to the technical field of machining of car sheet metal. The method includes the steps that firstly, all components of the thinner are prepared according to mass fractions, and X-4 aminopaint thinner is added into gasoline and stirred evenly to obtain a mixture A; secondly, prepared zinc dialkylphosphorodithiloate, diethylene glycol methyl ethyl ether, methylisobutylketone, isopropanol, pyrrole, polyving alcohol, diethylene glycol dimethyl ether and dichloroethane are mixed and stirred evenly at normal temperature to obtain a mixture B; thirdly, the obtained mixture A is poured into a reactor, then the obtained mixture B is poured into the reactor, nitrogen is introduced to purge the reactor, after purging is finished, the nitrogen is stopped, stirring begins, and cooling is carried out after stirring and reaction. The thinner can fundamentally resolve the problem that the surface of the sheet metal part is scratched in the drawing formation process, and improves the quality of drawing formation of the car sheet metal part.
Description
Technical field
The present invention relates to plates of automobile processing technique field, more particularly, relate to the thinner preparation method added in a kind of automobile metal plate work drawing and forming coat.
Background technology
Panel beating is for a kind of comprehensive cold machining process of metal sheet (usually at below 6mm), comprises cutting, rushing/cut/compound, folding, welding, riveted joint, splicing, shaping (as body of a motor car) etc.Its significant feature is exactly Same Part consistency of thickness.Can manufacturing is the hinge technology that panel beating technician needs to hold, and is also the important procedure that sheet metal product is shaped.Can manufacturing comprises method and the processing parameters such as traditional cutting stock, punch press process, curved pressing formation, comprises again various cold punching die structure &processes parameter, various equipment work principle and method of operating, also comprise new stamping technology and novel process.
Drawing also claims drawing or calendering, is the processing method for stamping that the plate blank obtained after utilizing Dies ' Blanking becomes the hollow part of opening.Tubular, stepped appearance, taper, spherical, box-like and other erose thin-walled parts can be made with deep-drawing technique, if coordinated with other Sheet Metal Forming Technologies, the part that shape is very complicated can also be manufactured.In the drawing process of rectangular drawpiece, the middle portion of plate becomes the bottom of part, does not substantially deform.And very large compressive plastic deformation will along the circumferential direction occur in outside, and force unnecessary metal to produce flowing along the radial direction of blank, thus form the sidewall of drawing part.A pair kinematic pair in drawing process is different from common mechanical organ, and the side because of their relatively sliding is quenched hard mold, and the opposing party is much softer than mould processing plate, so their very different of being out of shape separately; Along with the change in processing orientation, processing plate also has very large from difference at the distortion speed of each profiled section.Detect by observing the representational drawing part of part, the thickness of discovery drawing part each several part is inconsistent, normally bottom is basic keeps original thickness, side wall upper part thickens, thin down portions, and with slightly upper for the thinnest close to bottom roundings place, this just reflects the discordance of drawing process metal slippage.
The cut that drawing surface occurs and other surface quality defect mainly cause because the contact surface of drawing material and mould produces Relative sliding, and the cut that this slippage creates on article surface because of the inconsistent of friction resistance suffered during some particle place slippage.Cut on article surface is the defect of puzzlement cold stamping deformation technique always, how to reduce, even avoid the generation of this kind of defect, it is an urgent demand constantly moving towards high precision Pressing Deformation part, especially for automobile cold stamping product, after processing, the degree of uniformity of woollen matrix, directly affects safe reliability and the work-ing life of component and even complete machine.
In prior art; cut is produced in automobile metal plate work drawing and forming process; generally before drawing and forming, be coated with last layer coat protect; coat is generally made up of paint material and thinner; but; the design of the thinner in tradition coat is unreasonable, often occurs that part scratches and the problem of coat bonding mould.
Summary of the invention
1. invent the technical problem that will solve
The object of the invention is to overcome the deficiency easily producing cut in prior art in automobile metal plate work drawing and forming process, provide the thinner preparation method added in a kind of automobile metal plate work drawing and forming coat, adopt technical scheme of the present invention, fundamentally can solve the surface tear problem in sheet metal component punching press drawing process, thus the surface throwing solving the production of part later stage is repaiied and finishing process bottleneck problem, improves the quality of sheet metal component punching press drawing and forming.
2. technical scheme
For achieving the above object, technical scheme provided by the invention is:
The thinner preparation method added in a kind of automobile metal plate work drawing and forming coat of the present invention, the steps include:
Step one,
Each component of thinner is prepared: gasoline, X-4 amino paint thinner, zinc dialkyl dithiophosphate, diethylene glycol ethylmethyl ether, mibk, Virahol, pyrroles, polyvinyl alcohol, diethylene glycol dimethyl ether, ethylene dichloride by mass fraction; And X-4 amino paint thinner is joined in gasoline, be uniformly mixed to obtain mixture A;
Step 2,
By the zinc dialkyl dithiophosphate of preparation in step one, diethylene glycol ethylmethyl ether, mibk, Virahol, pyrroles, polyvinyl alcohol, diethylene glycol dimethyl ether, ethylene dichloride mixing and stirring at normal temperatures, obtain mixture B;
Step 3,
Mixture A obtained in step one is poured in reactor, again the mixture B obtained in step 2 is poured in reactor, pass into nitrogen purging reactor 15-20 minute, purging terminates rear closedown nitrogen and starts to stir, stirring velocity controls as 150-200 rpm, churning time is 30 ~ 35 minutes, 43-52 DEG C is warming up to after stirring terminates, react and be warming up to 62-70 DEG C after 1-2 hour, reaction 2-3 hour, then continue to be warming up to 90-96 DEG C, reaction 3-4 hour, after cooling, obtain the thinner added in automobile metal plate work drawing and forming coat.
Preferably, each component of thinner prepared in step one is by following mass parts composition: 100 parts, gasoline, X-4 amino paint thinner 20 ~ 25 parts, zinc dialkyl dithiophosphate 10 ~ 12 parts, diethylene glycol ethylmethyl ether 7 ~ 9 parts, mibk 4 ~ 7 parts, Virahol 6 ~ 8 parts, pyrroles 5 ~ 9 parts, polyvinyl alcohol 5 ~ 9 parts, diethylene glycol dimethyl ether 11 ~ 13 parts, ethylene dichloride 11 ~ 13 parts.
Preferably, each component of thinner prepared in step one is by following mass parts composition:
100 parts, gasoline,
X-4 amino paint thinner 23 parts,
Zinc dialkyl dithiophosphate 11 parts,
Diethylene glycol ethylmethyl ether 8 parts,
Mibk 5 parts,
Virahol 7 parts,
Pyrroles 8 parts,
Polyvinyl alcohol 7 parts,
Diethylene glycol dimethyl ether 12 parts,
Ethylene dichloride 12 parts.
Preferably, each component of thinner prepared in step one is by following mass parts composition:
100 parts, gasoline,
X-4 amino paint thinner 23 parts,
Zinc dialkyl dithiophosphate 10 parts,
Diethylene glycol ethylmethyl ether 7 parts,
Mibk 4 parts,
Virahol 6 parts,
Pyrroles 5 parts,
Polyvinyl alcohol 5 parts,
Diethylene glycol dimethyl ether 11 parts,
Ethylene dichloride 11 parts.
3. beneficial effect
Adopt technical scheme provided by the invention, compared with prior art, there is following unusual effect:
(1) the thinner preparation method added in a kind of automobile metal plate work drawing and forming coat of the present invention, gasoline and X-4 amino paint mixing diluents is adopted to use, and be configured with specific auxiliary addition agent, the auxiliary addition agent used comprises zinc dialkyl dithiophosphate, diethylene glycol ethylmethyl ether, mibk, Virahol, pyrroles, polyvinyl alcohol, diethylene glycol dimethyl ether, ethylene dichloride, auxiliary addition agent is the technological innovation of key of the present invention, by dispersion and the crosslinked action of auxiliary addition agent, the thinner using the present invention to prepare is mixed and made into coating material with paint material and is sprayed on automobile metal plate work, best paint film thickness angle value can be obtained, the lubrication of the coat on automobile metal plate work surface in part drawing process and provide protection effect is enable to reach best, part is prevented to be damaged in drawing process, fundamentally solve the surface tear problem in sheet metal component punching press drawing process.
(2) the thinner preparation method added in a kind of automobile metal plate work drawing and forming coat of the present invention; be applied in sheet metal component drawing production process; respond well; meet the resist technology requirement of negative clearance and deep drawing; the present invention is once great promotion for sheet metal part surface protection technique, has considerable economic benefit and good social benefit.
Embodiment
For understanding content of the present invention further, below in conjunction with embodiment, the invention will be further described.
embodiment 1
The thinner added in a kind of automobile metal plate work drawing and forming coat of the present embodiment, this thinner is made up of following component, and each component is by following mass parts composition: 100 parts, gasoline, X-4 amino paint thinner 23 parts, zinc dialkyl dithiophosphate 11 parts, diethylene glycol ethylmethyl ether 8 parts, mibk 5 parts, Virahol 7 parts, pyrroles 8 parts, polyvinyl alcohol 7 parts, diethylene glycol dimethyl ether 12 parts, ethylene dichloride 12 parts.
The thinner preparation method added in a kind of automobile metal plate work drawing and forming coat of the present embodiment, its concrete step is:
Step one, prepare each component of thinner by mass fraction: 100 parts, gasoline, X-4 amino paint thinner 23 parts, zinc dialkyl dithiophosphate 11 parts, diethylene glycol ethylmethyl ether 8 parts, mibk 5 parts, Virahol 7 parts, pyrroles 8 parts, polyvinyl alcohol 7 parts, diethylene glycol dimethyl ether 12 parts, ethylene dichloride 12 parts; And X-4 amino paint thinner is joined in gasoline, be uniformly mixed to obtain mixture A;
Step 2, the zinc dialkyl dithiophosphate by preparing in step one, diethylene glycol ethylmethyl ether, mibk, Virahol, pyrroles, polyvinyl alcohol, diethylene glycol dimethyl ether, ethylene dichloride mixing and stirring at normal temperatures, obtain mixture B; Wherein: in the present embodiment mixture B to be uniformly mixed process as follows: first zinc dialkyl dithiophosphate, diethylene glycol ethylmethyl ether, mibk, Virahol are joined in agitator and stir, controlling stirring velocity is 150 rpm, and churning time is 21 minutes; And then add pyrroles, polyvinyl alcohol, diethylene glycol dimethyl ether, ethylene dichloride, continue stirring 20 minutes, stirring velocity is 150 rpm;
Step 3, mixture A obtained in step one is poured in reactor, again the mixture B obtained in step 2 is poured in reactor, pass into nitrogen purging reactor 18 minutes, purging terminates rear closedown nitrogen and starts to stir, it is 180 rpm that stirring velocity controls, churning time is 32 minutes, stir after terminating and be warmed up to 40 DEG C with the heat-up rate of 2 DEG C/min, static insulation is after 10 minutes, 48 DEG C are warming up to again with the heat-up rate of 2 DEG C/min, react and be warmed up to 57 DEG C with the heat-up rate of 3 DEG C/min after 1.5 hours, static insulation is after 8 minutes, 67 DEG C are warming up to again with the heat-up rate of 2 DEG C/min, react 2.5 hours, continue again to be warming up to 93 DEG C, its heat-up rate is 2 DEG C/min, react 3.5 hours, after cooling, obtain the thinner added in automobile metal plate work drawing and forming coat.Preparation method in the present embodiment, adopt specific technology controlling and process, especially mixture A and mixture B was mixing the control of the temperature in process, made gasoline, X-4 amino paint thinner and auxiliary addition agent be disperseed fully and be cross-linked, greatly improved the final utilization performance of thinner.
The thinner added in the automobile metal plate work drawing and forming coat adopting the present embodiment to prepare and paint material are mixed to get coating material; coating material is sprayed on automobile metal plate work to be processed on the surface; best paint film thickness angle value can be obtained; the lubrication of the coat on automobile metal plate work surface in part drawing process and provide protection effect is enable to reach best; prevent part to be damaged in drawing process, fundamentally solve the surface tear problem in sheet metal component punching press drawing process.The technical problem of the present embodiment key is the thinner composition and ratio cooperation selection thereof that add in coat, the thinner of the present embodiment makes coat can bear deep drawing, the negative clearance pressure within 820 tons and the pressure-pad-force of 170 tons, ensures that part is not scratched in drawing process.
embodiment 2
The thinner added in a kind of automobile metal plate work drawing and forming coat of the present embodiment, this thinner is made up of following component, and each component is by following mass parts composition: 100 parts, gasoline, X-4 amino paint thinner 23 parts, zinc dialkyl dithiophosphate 10 parts, diethylene glycol ethylmethyl ether 7 parts, mibk 4 parts, Virahol 6 parts, pyrroles 5 parts, polyvinyl alcohol 5 parts, diethylene glycol dimethyl ether 11 parts, ethylene dichloride 11 parts.
The thinner preparation method added in a kind of automobile metal plate work drawing and forming coat of the present embodiment, its concrete step is same embodiment 1, and difference is: in step one, each component of thinner prepares by following mass parts: 100 parts, gasoline, X-4 amino paint thinner 23 parts, zinc dialkyl dithiophosphate 10 parts, diethylene glycol ethylmethyl ether 7 parts, mibk 4 parts, Virahol 6 parts, pyrroles 5 parts, polyvinyl alcohol 5 parts, diethylene glycol dimethyl ether 11 parts, ethylene dichloride 11 parts.
The thinner added in the automobile metal plate work drawing and forming coat adopting the present embodiment to prepare and paint material are mixed to get coating material; coating material is sprayed on automobile metal plate work to be processed on the surface; best paint film thickness angle value can be obtained; the lubrication of the coat on automobile metal plate work surface in part drawing process and provide protection effect is enable to reach best; prevent part to be damaged in drawing process, fundamentally solve the surface tear problem in sheet metal component punching press drawing process.The technical problem of the present embodiment key is the thinner composition and ratio cooperation selection thereof that add in coat, the thinner of the present embodiment makes coat can bear deep drawing, the negative clearance pressure within 825 tons and the pressure-pad-force of 168 tons, ensures that part is not scratched in drawing process.
embodiment 3
The thinner added in a kind of automobile metal plate work drawing and forming coat of the present embodiment, this thinner is made up of following component, and each component is by following mass parts composition: 100 parts, gasoline, X-4 amino paint thinner 23 parts, zinc dialkyl dithiophosphate 12 parts, diethylene glycol ethylmethyl ether 9 parts, mibk 7 parts, Virahol 8 parts, pyrroles 9 parts, polyvinyl alcohol 9 parts, diethylene glycol dimethyl ether 13 parts, ethylene dichloride 13 parts.
The thinner preparation method added in a kind of automobile metal plate work drawing and forming coat of the present embodiment, its concrete step is same embodiment 1, and difference is: in step one, each component of thinner prepares by following mass parts: 100 parts, gasoline, X-4 amino paint thinner 23 parts, zinc dialkyl dithiophosphate 12 parts, diethylene glycol ethylmethyl ether 9 parts, mibk 7 parts, Virahol 8 parts, pyrroles 9 parts, polyvinyl alcohol 9 parts, diethylene glycol dimethyl ether 13 parts, ethylene dichloride 13 parts.
The thinner added in the automobile metal plate work drawing and forming coat adopting the present embodiment to prepare and paint material are mixed to get coating material; coating material is sprayed on automobile metal plate work to be processed on the surface; best paint film thickness angle value can be obtained; the lubrication of the coat on automobile metal plate work surface in part drawing process and provide protection effect is enable to reach best; prevent part to be damaged in drawing process, fundamentally solve the surface tear problem in sheet metal component punching press drawing process.The technical problem of the present embodiment key is the thinner composition and ratio cooperation selection thereof that add in coat, the thinner of the present embodiment makes coat can bear deep drawing, the negative clearance pressure within 817 tons and the pressure-pad-force of 165 tons, ensures that part is not scratched in drawing process.
Claims (4)
1. the thinner preparation method added in automobile metal plate work drawing and forming coat, is characterized in that, the steps include:
Step one,
Each component of thinner is prepared: gasoline, X-4 amino paint thinner, zinc dialkyl dithiophosphate, diethylene glycol ethylmethyl ether, mibk, Virahol, pyrroles, polyvinyl alcohol, diethylene glycol dimethyl ether, ethylene dichloride by mass fraction; And X-4 amino paint thinner is joined in gasoline, be uniformly mixed to obtain mixture A;
Step 2,
By the zinc dialkyl dithiophosphate of preparation in step one, diethylene glycol ethylmethyl ether, mibk, Virahol, pyrroles, polyvinyl alcohol, diethylene glycol dimethyl ether, ethylene dichloride mixing and stirring at normal temperatures, obtain mixture B;
Step 3,
Mixture A obtained in step one is poured in reactor, again the mixture B obtained in step 2 is poured in reactor, pass into nitrogen purging reactor 15-20 minute, purging terminates rear closedown nitrogen and starts to stir, stirring velocity controls as 150-200 rpm, churning time is 30 ~ 35 minutes, 43-52 DEG C is warming up to after stirring terminates, react and be warming up to 62-70 DEG C after 1-2 hour, reaction 2-3 hour, then continue to be warming up to 90-96 DEG C, reaction 3-4 hour, after cooling, obtain the thinner added in automobile metal plate work drawing and forming coat.
2. the thinner added in a kind of automobile metal plate work drawing and forming coat according to claim 1, is characterized in that: each component of thinner prepared in step one forms by following mass parts: 100 parts, gasoline, X-4 amino paint thinner 20 ~ 25 parts, zinc dialkyl dithiophosphate 10 ~ 12 parts, diethylene glycol ethylmethyl ether 7 ~ 9 parts, mibk 4 ~ 7 parts, Virahol 6 ~ 8 parts, pyrroles 5 ~ 9 parts, polyvinyl alcohol 5 ~ 9 parts, diethylene glycol dimethyl ether 11 ~ 13 parts, ethylene dichloride 11 ~ 13 parts.
3. the thinner preparation method added in a kind of automobile metal plate work drawing and forming coat according to claim 1, is characterized in that: each component of thinner prepared in step one forms by following mass parts:
100 parts, gasoline,
X-4 amino paint thinner 23 parts,
Zinc dialkyl dithiophosphate 11 parts,
Diethylene glycol ethylmethyl ether 8 parts,
Mibk 5 parts,
Virahol 7 parts,
Pyrroles 8 parts,
Polyvinyl alcohol 7 parts,
Diethylene glycol dimethyl ether 12 parts,
Ethylene dichloride 12 parts.
4. the thinner preparation method added in a kind of automobile metal plate work drawing and forming coat according to claim 1, is characterized in that: each component of thinner prepared in step one forms by following mass parts:
100 parts, gasoline,
X-4 amino paint thinner 23 parts,
Zinc dialkyl dithiophosphate 10 parts,
Diethylene glycol ethylmethyl ether 7 parts,
Mibk 4 parts,
Virahol 6 parts,
Pyrroles 5 parts,
Polyvinyl alcohol 5 parts,
Diethylene glycol dimethyl ether 11 parts,
Ethylene dichloride 11 parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410845824.9A CN104530805A (en) | 2014-12-31 | 2014-12-31 | Method for preparing thinner added to coating layer for drawing formation of car sheet metal part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410845824.9A CN104530805A (en) | 2014-12-31 | 2014-12-31 | Method for preparing thinner added to coating layer for drawing formation of car sheet metal part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104530805A true CN104530805A (en) | 2015-04-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410845824.9A Pending CN104530805A (en) | 2014-12-31 | 2014-12-31 | Method for preparing thinner added to coating layer for drawing formation of car sheet metal part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104530805A (en) |
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2014
- 2014-12-31 CN CN201410845824.9A patent/CN104530805A/en active Pending
Non-Patent Citations (1)
| Title |
|---|
| 王泳厚等: "《涂料防腐蚀技术300问》", 30 September 1995 * |
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Application publication date: 20150422 |
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