CN104831323B - A kind of large-scale slush mold partial thickening method - Google Patents
A kind of large-scale slush mold partial thickening method Download PDFInfo
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- CN104831323B CN104831323B CN201510166022.XA CN201510166022A CN104831323B CN 104831323 B CN104831323 B CN 104831323B CN 201510166022 A CN201510166022 A CN 201510166022A CN 104831323 B CN104831323 B CN 104831323B
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Abstract
The invention discloses a kind of method of slush mold being carried out to partial thickening, the surface of described slush mold comprise region is treated to mark, pre-treatment is carried out on surface, enclose electroforming pond, the interpolation of activation treatment, electroforming solution and preheating, electroforming, coating post-treating and other steps.Present invention also offers a kind of equipment for being carried out partial thickening on the surface of goods by electroforming, described equipment comprises: electroforming pond assembly, reservoir, liquid pump and/or upflow tube, heating unit, electroforming power supply, agitator and be circulated throughout the devices such as filter.The present invention can carry out partial thickening to the surface of complicated die, and method is simple, and cost is low, and can be formed on the surface of goods such as slush mold especially nickel metal slush mold combine firmly, thickness is homogeneous, surfaceness is low thickens coating.
Description
Technical field
The invention belongs to manufacture field, especially fascia manufactures field, relates more specifically to a kind of method of fascia slush mold partial thickening.
Background technology
In manufacture field, often need to carry out partial thickening to obtained goods.But the bonding force of prior art to the material formed by partial thickening and goods bulk material does not usually reach actual needs, and usually occurs the phenomenon of layering in the use procedure in later stage.
In addition, manufacture field at fascia, usually use slush mold, this slush mold is complex-shaped due to it, and very strict to the requirement of wall thickness, its thickness error of general requirement is no more than 0.5mm.But, owing to being difficult to ensure the homogeneity of thickness in moulding process, sometimes error may more than 0.5mm, so can cause the situation of the inconsistent especially thickness deficiency of moulding process mesocuticle thickness, in the facade position of instrument mask and other negative angle position, these defects are especially outstanding.The defect of the defect of this uneven distribution especially thickness deficiency can cause very large impact to follow-up assembly process, therefore usually needs to carry out partial thickening to it afterwards slush mold is shaping.On the other hand, due to the needs designed according to epidermis, may need to carry out partial thickening to existing slush mold.By described partial thickening, can increase the stored heat in the unit surface of thickened position, the epidermal thickness that correspondence position can be made like this to be formed increases with the requirement reaching target thickness.
Summary of the invention
Technical problem to be solved by this invention is the problem of the easy layering of partial thickening in prior art, especially be difficult in the electroforming process that in slush mold manufacture field, existing galvanoplastics exists to ensure each position thickness homogeneity and without the need to meeting follow-up slush moulding epidermis Product Assembly precision to the problem of the requirement of mold thickness, the surface providing a kind of especially fascia slush mold on the surface of object is carried out the method for partial thickening.
In first aspect, the invention provides a kind of method of slush mold being carried out to partial thickening, the surface of described slush mold comprises one or more first surface region and one or more second surface region optional, described first surface region needs to thicken and described second surface region does not need to thicken, it is characterized in that, described method comprises the steps:
S1: mark the 3rd surf zone on the surface of described slush mold, described 3rd surf zone comprises first surface region described at least one;
S2: first described 3rd surf zone is surrounded electroforming pond and then activation treatment is carried out to described 3rd surf zone;
S3: add electroforming solution and preheating in described electroforming pond;
S4: utilize described electroforming pond and described electroforming solution carry out electroforming and described first surface region to be thickened in described electroforming pond are formed coating; With
S5: at described coating, described first surface region is thickened and stop electroforming to during target thickness.
In a second aspect of the present invention, provide a kind of equipment for being carried out partial thickening on the surface of object by electroforming, it is characterized in that, described equipment comprises:
For the formation of the electroforming pond assembly in electroforming pond, described electroforming pond assembly comprises: (i) electroforming pond surrounding wall portion and/or to form the sheet material of electroforming pond surrounding wall portion, (ii) sealing material and (iii) anode titanium blue; Preferably, the sheet material of described electroforming pond surrounding wall portion or formation electroforming pond surrounding wall portion is polyvinyl-chloride plate material, and/or described sealing material comprises elastic polyurethane gasket, epoxy resin and/or silicone sealant;
Reservoir, wherein, described reservoir operationally by the first liquid pump for the solution pump in reservoir being delivered to described electroforming pond from described reservoir to the first direction of described electroforming solution with described liquid storage fluid communication, and described reservoir is operationally by for making the solution in described electroforming pond flow to the upflow tube of described reservoir or the second liquid pump is being communicated with described electroforming pond fluid to the second direction of described reservoir from described electroforming pond, thus formation fluidic circuit;
For heating the heating unit of the solution in described reservoir; Preferably, described heating unit comprises heating power supply and is operationally electrically connected with described heating power supply and is operationally arranged in the heating rod in described reservoir;
Electroforming power supply, described electroforming power supply is operationally connected to carry out electroforming with the blue electricity of the anode titanium in described electroforming pond and the slush mold as negative electrode;
Agitator, described agitator is operationally arranged to stir the solution in described electroforming pond; Preferably, described agitator is pneumatic blending pump; With
Be circulated throughout filter, described in be circulated throughout filter and be operationally arranged in described fluidic circuit to filter the solution flowing through described communication circuit;
Wherein preferably described object is preferably slush mold;
More preferably described object is nickel metal slush mold, and described anode titanium indigo plant is preferably equipped with the anode titanium basket of nickel cake, the nickel cake of further preferably described nickel cake to be sulphur content be 0.015-0.027 % by weight.
In the third aspect, the invention provides a kind of method of slush mold being carried out to partial thickening, described method is undertaken by using the method described in the above-mentioned first aspect of equipment enforcement right described in above-mentioned second aspect.
In fourth aspect, the invention provides a kind of method above-mentioned by above-mentioned first aspect and/or adopt the equipment described in above-mentioned second aspect to carry out partial thickening the goods obtained, described goods are preferably slush mold, are more preferably nickel metal slush mold.
Compared with prior art, the present invention can thicken the surface of complicated die especially outside surface, method is simple, cost is low, and can be formed on the surface of goods such as slush mold especially nickel metal slush mold combine firmly, thickness is homogeneous, surfaceness is low thickens coating.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further illustrated:
Fig. 1 is the schema of the method for fascia nickel metal slush mold partial thickening according to certain embodiments of the present invention.
Fig. 2 is the process flow sheet according to an embodiment of the invention of indicative icon.Wherein, 1. slush mold; 2. the 3rd surf zone; 2'. first surface region (namely needing the surf zone thickened); 2 ". second surface region (i.e. insulation processing region); 3. electroforming pond; 4. upflow tube; 5. acid activation liquid; 6. heating rod; 7. heating power supply; 8. reservoir; 9. electroforming power supply; 10. pneumatic blending pump; 11. wires; 12. electroforming solution; 13. titaniums are blue; 14. are circulated throughout filter.
Fig. 3 is the schematic diagram of the equipment for being carried out partial thickening on the surface of goods by electroforming according to an embodiment of the invention.Reference numeral is with shown in Fig. 2.
Embodiment
The specific embodiment of the present invention provides by way of example in order to allow the present invention of those skilled in the art's easy understand, should not be understood to that the present invention is limited to these embodiments.
Understandable, in fact method and apparatus of the present invention may be used for anyly on the surface of goods, carrying out partial thickening by electroforming, and certainly, the surface of described goods should be have electroconductibility or can have electroconductibility through process.But, for convenience of description and be convenient to understand object, hereafter will mainly be further detailed for slush mold such as nickel metal slush mold.
Hereinafter with reference to accompanying drawing, 1 to 3 couple of the present invention is further described in more detail.
The present invention provides a kind of method of slush mold being carried out to partial thickening in first aspect.As shown in Figure 1, in some embodiments, method of the present invention comprise the steps: mark treat region, enclose electroforming pond and activation treatment, interpolation preheating electroforming solution, electroforming, stopping electroforming.
More particularly, in some embodiments, the invention provides a kind of method of slush mold being carried out to partial thickening, the surface of described slush mold comprises one or more first surface region and one or more second surface region optional, described first surface region needs to thicken and described second surface region does not need to thicken, it is characterized in that, described method comprises the steps: S1: on the surface of described slush mold, mark the 3rd surf zone, and described 3rd surf zone comprises first surface region described at least one; S2: first described 3rd surf zone is surrounded electroforming pond and then activation treatment is carried out to described 3rd surf zone; S3: add electroforming solution and preheating in described electroforming pond; S4: utilize described electroforming pond and described electroforming solution carry out electroforming and described first surface region to be thickened in described electroforming pond are formed coating; And S5: at described coating, described first surface region is thickened and stop electroforming to during target thickness.
In some embodiments, before described activation treatment, by polishing and/or polishing, pre-treatment is carried out to spill the step of the bulk material of slush mold to first surface region described in one or more.Described pre-treatment can be carried out by the random time point before electroforming, but generally carries out before activation treatment, such as, can carry out before enclosing electroforming pond.
In some embodiments, described 3rd surf zone also comprises described second surface region, namely the surf zone thickened is not needed, if when being especially inconvenient to surround electroforming pond when irregular thus described 3rd surf zone in first surface region only comprises described first surface region, described 3rd surf zone preferably also comprises described second surface region.In this case, before described method can be included in described activation treatment, such as, the described second surface region be included in described 3rd surf zone is carried out to the step of insulation processing before enclosing electroforming pond or before optional described pre-treatment.Described insulation processing can adopt any insulating material to carry out.But preferably, described insulation processing is undertaken by coating insullac; It is further preferred that described insullac is polyvinyl chloride insulation paint and/or green hook glue.
The present invention comprises surrounding wall portion to the material surrounding electroforming pond or forms the material of sheet material of surrounding wall portion and sealing material has no particular limits.But in some embodiments, described electroforming pond can surround in the following way: utilize polypropylene (PP) sheet material to surround open ended tubular structure, described tubular structure has the first end on surrounding wall portion and the surface away from described slush mold and the second end relative with described first end, described the second end is combined with elastic polyurethane gasket, the surface contact ground of described gasket and described slush mold is arranged, use epoxy resin (such as low viscosity epoxy resin known in the art) seals the seam between described the second end and described gasket, seam between the surface of described gasket and described slush mold, and/or the seam of the described polypropylene board existed alternatively, and after described epoxy resin cure, use silicone sealant to carry out secondary seal to described seam.Described tubular structure can the structure such as columnar structured or polyhedron tubular structure.Described tubular structure can be the jointless structure of surrounding wall portion.But in some cases, described tubular structure also can be the tubular structure surrounded by the edge butt joint of sheet material opposite side, and in this case, described tubular structure will exist seam.This seam can be good seal in advance; Also can be size according to described 3rd surf zone and the sheet material that cuts then by by the opposite side edge butt joint of sheet material, epoxy resin can be used in this case to carry out sealing and/or use above-mentioned silicone sealant to carry out secondary seal.
After having enclosed electroforming pond, activation treatment is carried out to the described first surface region be included in described 3rd surf zone, such as, adopted acid activation liquid to carry out activation treatment, to remove the oxide film that slush mold body surface is formed.
In some embodiments, the bulk material of described slush mold is nickel metal.Object for convenience of description, if do not illustrated in addition, is hereafter described the slush mold taking bulk material as nickel metal for example.
When bulk material is nickel metal, described activation treatment can adopt acid activation liquid to carry out.The present inventor finds, when the bulk material of slush mold is nickel metal, the problem of layering often appears in coating because binding force of cladding material declines.Find through research, the lamination problem existed in prior art does not have up hill and dale and is very difficult to remove the nickel oxide film that nickel metal body material is formed up hill and dale.The present inventor is surprised to find that in research process, can remove the nickel oxide film that nickel metal body material surface is formed well under using the condition of suitable acid concentration that is combined in of suitable acid or acid, a crucial part of layering is to remove nickel oxide film as far as possible up hill and dale therefore to avoid coating to occur.So, in some preferred embodiments, described acid activation liquid is selected from the group be made up of the mixture of the mixture of (1) sulphuric acid soln, (2) salpeter solution, (3) sulphuric acid soln and salpeter solution, (4) sulphuric acid soln and hydrochloric acid soln; Further preferably, described sulphuric acid soln, salpeter solution and/or described hydrochloric acid soln are the aqueous solution; Further preferably, the aqueous sulfuric acid of described sulphuric acid soln to be 5-10 quality % be such as 5,6,7,8,9 or 10 quality %, the aqueous nitric acid of described salpeter solution to be 10-15 quality % be such as 10,11,12,13,14,15 quality %, the hydrochloric acid soln of described hydrochloric acid soln to be 6-8 quality % be such as 6,7 or 8 quality %, and the volume ratio that described mixture is the described aqueous acid of described concentration is the mixture of 1:1.
Some preferred embodiment in, after described method is also included in activation treatment, preferably within 10 seconds, described acid activation liquid is exhausted within 15 seconds, and preferably within 10 seconds, described electroforming solution is added in described electroforming pond within 15 seconds after exhausting.The present inventor finds, if if acid activation liquid extracts overlong time or interval is long after exhausting time just adds electroforming solution, easily on nickel metal body material, secondary forms nickel oxide film, thus affect the effect of activation treatment, and and then affect the bonding strength of coating and bulk material.
Described electroforming solution of the present invention directly can buy acquisition, also can prepare acquisition before the use.In some embodiments, described method to carry out the step of preheating to described electroforming solution before being also included in electroforming; Preferably, make described electroforming solution be preheated to 50 DEG C to 56 DEG C by described preheating, such as, be preheated to 50,51,52,54,55 or 56 DEG C, alternatively pre-treatment is carried out to electroforming solution with such as convenient.Described preheating can be undertaken by the heating unit of the equipment described in above-mentioned second aspect of the present invention.In some particularly preferred embodiments, described method can also comprise the step of electroforming solution being carried out to pre-treatment; It is further preferred that described pre-treatment comprises the step removing impurity in described electroforming solution especially organic impurity; Further preferably, the filtration unit that it is the filter core of 2 μm that described pre-treatment adopts with filtering accuracy waits the chemical mode such as physics mode and/or hydrogen peroxide process to remove described impurity especially organic impurity by filtration.Deimpurity physics mode is gone such as to be undertaken by being circulated throughout filter described in above-mentioned second aspect of the present invention herein.
Described electroforming solution can adopt nickel plating solution known in the art to carry out, such as, sulfuric acid ni-type solution or thionamic acid ni-type solution can be used to carry out.Coating internal stress easily affects the combination of coating and bulk material.The present inventor finds, from the angle reducing internal stress, described electroforming solution is preferably thionamic acid ni-type solution; Further preferably, the LB wetting agent that described thionamic acid ni-type solution is 2ml/l by the boric acid that content is the nickel sulfamic acid of 350g/l, content is the nickelous chloride of 10g/l, content is 30g/l and content forms.Described LB wetting agent is low-foam wetting agents, is material well known to those skilled in the art.In an optional embodiment, LB wetting agent that content replaces described content to be 2ml/l for 0.1g/l sodium lauryl sulphate can be used to form described electroforming solution.
In some embodiments, the temperature 50 C to 56 of described electroforming solution in electroforming process DEG C (is such as 55,56,57,58,59 or 60 DEG C, pH value is 3.8 to 4.2 (being such as 3.8,3.9,4.0,4.1 or 4.2), and current density is 3 to 5A/dm
2(be such as 3,3.5,4,4.5 or 5A/dm
2).But, although adopt above-mentioned condition can obtain generally can meeting the requirement of nickel gold slush mold partial thickening, but the present inventor also surprisingly finds in the process of research nickel metal slush mold partial thickening, if described temperature is 56 DEG C, described pH value is 4.2, and described current density is 4A/dm
2, can obtain significantly higher effect, its mechanism is also unclear at present.So do not wish to be bound by any theory, in a most preferred embodiment, adopt described temperature to be 56 DEG C, described pH value is 4.2, and described current density is 4A/dm
2carry out electroforming.In the present invention, the temperature of electroforming process and the preheating of electroforming solution can adopt temperature controller to monitor.PH can adopt conventional pH meter to monitor, and current density can be monitored by current density design.Described temperature controller, pH meter and current density design are all equipment well known in the art.
Electroforming can be stopped after reaching target thickness.This area staff experimentally can determine to reach target and thicken electroforming time required for thickness, can stop electroforming then adopting identical or similar parameter electroforming same time when next electroforming after.Alternatively, real time monitoring can be carried out by thickness tester to the thickness that electroforming thickens position, then after reaching target thickness, stop electroforming.
In some embodiments, thickened in described first surface region and by polishing and/or polishing, the step of aftertreatment is carried out to described coating to target thickness.
With reference now to Fig. 2, some embodiments of the present invention are described.As shown in Figure 2, on slush mold 1, first mark the 3rd surf zone the 3, three surf zone 3 comprise the surf zone that namely first surface region 2'(need to thicken) and second surface region 2 " (namely not needing the surf zone thickened).Then " carry out insulation processing and/or by polishing and/or polishing, pre-treatment is carried out to the first surface region 2' in the 3rd surf zone 2 to second surface region 2, then the 3rd surf zone is surrounded electroforming pond 3.Acid activation liquid 5 is added, to carry out activation treatment to first surface region 2' wherein to electroforming pond.After activation treatment terminates, take out acid activation liquid 5 and add electroforming solution 12 wherein, the heating unit comprising heating power supply 7 and heating rod 6 is utilized to be preheating to such as 50 DEG C to 56 DEG C to the electroforming solution 12 in electroforming pond 3, by by electroforming pond 3, upflow tube 4 (or upflow tube or the second liquid pump (not shown) for making the solution in described electroforming pond flow to described reservoir), the fluidic circuit that reservoir 8 and the first liquid pump (not shown) for the solution pump in reservoir being delivered to described electroforming pond are formed carries out pre-treatment to filter out particulate matter in electroforming solution by physics mode to the electroforming solution flowed in this fluidic circuit cocycle by means of being circulated throughout filter 14 (filter core can be such as 0.25 μm of aperture).In addition, the organic granular of chemical mode such as hydrogen peroxide to electroforming solution also can be adopted to remove.
Electroforming is carried out after preheating and pre-treatment.Can in whole electroforming process, electroforming solution circulated always, also can be removed even if make impurity just introduce in electroforming process like this, also contribute to the homogeneous of electroforming solution temperature simultaneously and keep the uniformity of electroforming solution.In the process of electroforming, the uniformity of electroforming solution can also be kept by pneumatic blending pump.
In a second aspect of the present invention, provide a kind of equipment for being carried out partial thickening on the surface of goods by electroforming.With reference now to Fig. 3, this equipment is described.Described equipment can comprise:
For the formation of the electroforming pond assembly in electroforming pond 3, described electroforming pond assembly comprises: sheet material, (ii) sealing material, (iii) anode titanium indigo plant 13 of (i) electroforming pond surrounding wall portion and/or formation electroforming pond surrounding wall portion; Preferably, the sheet material of described electroforming pond 3 surrounding wall portion or formation electroforming pond surrounding wall portion is polyvinyl-chloride plate material, and/or described sealing material comprises elastic polyurethane gasket, epoxy resin and/or silicone sealant;
Reservoir 8, wherein, described reservoir 8 is operationally being communicated with described reservoir 8 fluid from described reservoir 8 by the first liquid pump (not shown) for the solution pump in reservoir 8 being delivered to described electroforming pond 3 to the first direction in described electroforming pond 3, and described reservoir 8 is operationally by for making the solution in described electroforming pond 3 flow to the upflow tube 4 of described reservoir 8 or the second liquid pump (not shown) is being communicated with described electroforming pond 3 fluid to the second direction of described reservoir 8 from described electroforming pond 3, thus formation fluidic circuit;
For heating the heating unit of the solution in described reservoir 8; Preferably, described heating unit is comprised heating power supply 7 and is operationally electrically connected by wire with described heating power supply 7 and is operationally arranged in the heating rod 6 in described reservoir 8;
Electroforming power supply 9, described electroforming power supply 9 is operationally by the anode titanium blue 13 in wire 11 and described electroforming pond 3 be electrically connected to carry out electroforming as the slush mold of negative electrode;
Agitator 10, described agitator 19 is operationally arranged to stir the solution in described electroforming pond 3; Preferably, described agitator 10 is pneumatic blending pump; With
Be circulated throughout filter 14, described in be circulated throughout filter 14 and be operationally arranged in described fluidic circuit to filter the solution flowing through described communication circuit.
Some preferred embodiment in, described goods 1 are slush molds; More preferably described goods are nickel metal slush mold, and described anode titanium indigo plant is preferably equipped with the anode titanium basket of nickel cake, the nickel cake of further preferably described nickel cake to be sulphur content be 0.015-0.027 % by weight.It is believed that the nickel cake of sulphur content in described scope easily dissolves in electroforming process and its surface is not easy to be passivated.Be conducive to the stable of electroforming to carry out.
Embodiment
Hereafter will be described further the present invention by embodiment.
The main raw used in embodiment and equipment are as shown in following table 1 and 2.
The main raw used in table 1 embodiment
The major equipment used in table 2 embodiment
Embodiment 1
First to needing the first surface region thickened to carry out sanding and polishing process, then will the second surface region PVC insullac thickening process do not needed to carry out insulation processing, after insullac solidification, after carrying out clean at the bottom of pond, described process will comprise first surface region that needs thicken at slush mold outside surface and surround an electroforming pond through the 3rd surf zone in the second surface region of insulation processing to specifications, with the nitric acid of 40 volume %, described first surface region to be plated is activated, 60 minutes time, in section, all devices are as shown in Figure 3 connected at this moment, then (be the nickel sulfamic acid of 350g/l by content by the thionamic acid ni-type electroforming solution that configured in 20 seconds, content is the nickelous chloride of 10g/l, content is the boric acid of 30g/l, be the aqueous solution of the LB wetting agent composition of 2ml/l with content) import in electroforming pond, now the temperature of electroforming solution is 56 DEG C, pH value 4.2, opening power carries out electroforming, current density is set to 4A/dm
2, start electroforming, measure thickness of coating with ultrasonic thickness indicator, when reaching target thickness, powered-down, stops electroforming, sanding and polishing process.In the present invention, target thickness can be 4.0 millimeters to 4.5 millimeters, and such as can choose target thickness is 4.0 millimeters, or 4.3 millimeters, or 4.35 millimeters, or 4.4 millimeters.
Embodiment 2 to 24
Except the parameter shown in following table 3, the mode identical with embodiment 1 is adopted to carry out embodiment 2 to 24.
The composition of the acid used in table 3 activation step and concentration of aqueous solution and activation effect thereof
In upper table when there being the combination of multiple acid, be all mix with the volume ratio of shown concentration by 1:1.
Remarks: observe with optical metallographic microscope, observe the side pattern of coating, divide 5 grades to pass judgment on: 5-is fine to side pattern; 4-is good; 3-is better; 2-is poor; 1-is very poor.
Embodiment 25 to 40
Except the parameter shown in following table 4, the mode identical with embodiment 20 is adopted to carry out embodiment 25 to 40.
The coating conditions that table 4 adopts different electroforming temperature, electroforming solution pH and current density to obtain.
Opinion rating illustrates:
5-coating surface is smooth; Thickness is very even; Do not observe pit and pin hole.
4-coating surface is smooth; Thickness is slightly uneven; Do not observe pit and pin hole.
3-coating surface is smooth; Thickness is slightly uneven; Observe a small amount of pin hole, do not observe pit
2-coating surface is coarse; In uneven thickness; Observe pin hole and pit
1-coating surface obfuscation, coarse; In uneven thickness; Observe pin hole and pit.
As can be seen from the result of above table 3 and table 4, adopt partial thickening method of the present invention, suitable acid activation liquid is used to carry out activation treatment to surface to be plated, use suitable electroforming temperature, electroforming solution pH and current density, the surf zone that thickens can be needed to be formed combine firmly by nickel metal slush mold in slush mold such as embodiments of the invention, thickness is even, surfaceness is low thickens coating.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (12)
1. one kind is carried out the method for partial thickening to slush mold, the surface of described slush mold comprises one or more first surface region and one or more second surface region optional, described first surface region needs to thicken and described second surface region does not need to thicken, it is characterized in that, described method comprises the steps:
S1: mark the 3rd surf zone on the surface of described slush mold, described 3rd surf zone comprises first surface region described at least one;
S2: first described 3rd surf zone is surrounded electroforming pond and then activation treatment is carried out to described 3rd surf zone;
S3: add electroforming solution and preheating in described electroforming pond;
S4: utilize described electroforming pond and described electroforming solution carry out electroforming and described first surface region to be thickened in described electroforming pond are formed coating; With
S5: at described coating, described first surface region is thickened and stop electroforming to during target thickness.
2. method according to claim 1, is characterized in that, described method also comprises:
Before described activation treatment, by polishing and/or polishing, pre-treatment is carried out to spill the step of the bulk material of slush mold to first surface region described in one or more; And/or
Thickened in described first surface region and by polishing and/or polishing, the step of aftertreatment is carried out to described coating to target thickness.
3. method according to claim 1 and 2, it is characterized in that, described 3rd surf zone also comprises described second surface region, and described method to carry out the step of insulation processing to the described second surface region be included in described 3rd surf zone before being also included in described activation treatment;
Described insulation processing is undertaken by coating insullac; Described insullac is polyvinyl chloride insulation paint and/or green hook glue.
4. method according to claim 3, it is characterized in that, described electroforming pond surrounds in the following way: utilize polypropylene board to surround open ended tubular structure, described tubular structure has the first end on surrounding wall portion and the surface away from described slush mold and the second end relative with described first end, described the second end is combined with elastic polyurethane gasket, the surface contact ground of described gasket and described slush mold is arranged, use the seam between the second end and described gasket described in epoxy sealing, seam between the surface of described gasket and described slush mold, and/or the seam of the described polypropylene board existed, and after described epoxy resin cure, use silicone sealant to carry out secondary seal to described seam.
5. method according to claim 4, is characterized in that, described method also comprises:
Described electroforming solution is carried out to the step of preheating before electroforming; Described electroforming solution is made to be preheated to 50 DEG C to 56 DEG C by described preheating; And/or
Electroforming solution is carried out to the step of pre-treatment; Described pre-treatment comprises the step of the organic impurity removed in described electroforming solution; The filtration unit that it is the filter core of 2 μm that described pre-treatment adopts with filtering accuracy removes described impurity by filtering.
6. method according to claim 5, is characterized in that, the bulk material of described slush mold is nickel metal;
Described activation treatment adopts acid activation liquid to carry out; Described acid activation liquid is selected from the group be made up of the mixture of the mixture of (1) sulphuric acid soln, (2) salpeter solution, (3) sulphuric acid soln and salpeter solution, (4) sulphuric acid soln and hydrochloric acid soln;
Described sulphuric acid soln, salpeter solution and/or described hydrochloric acid soln are the aqueous solution; Described sulphuric acid soln is the aqueous sulfuric acid of 5-10 quality %, described salpeter solution is the aqueous nitric acid of 10-15 quality %, described hydrochloric acid soln is the hydrochloric acid soln of 6-8 quality %, and the volume ratio that described mixture is the described aqueous acid of described concentration is the mixture of 1:1; And/or
Described electroforming solution is sulfuric acid ni-type solution or thionamic acid ni-type solution; Described thionamic acid ni-type solution is the LB wetting agent of 2ml/l or content by the boric acid that content is the nickel sulfamic acid of 350g/l, content is the nickelous chloride of 10g/l, content is 30g/l and content is that 0.1g/l sodium lauryl sulphate forms; And/or
The temperature 50 C to 56 DEG C of described electroforming solution in electroforming process, pH value is 3.8 to 4.2, and current density is 3 to 5A/dm
2.
7. method according to claim 6, is characterized in that, after described method is also included in activation treatment, is exhausted by described acid activation liquid within 15 seconds, and described electroforming solution is added in described electroforming pond within 15 seconds after exhausting.
8. for being carried out an equipment for partial thickening on the surface of goods by electroforming, it is characterized in that, described equipment comprises:
For the formation of the electroforming pond assembly in electroforming pond, described electroforming pond assembly comprises: (i) electroforming pond surrounding wall portion and/or form the sheet material of electroforming pond surrounding wall portion, (ii) sealing material and (iii) anode titanium basket; The sheet material of described electroforming pond surrounding wall portion or formation electroforming pond surrounding wall portion is polyvinyl-chloride plate material, and/or described sealing material comprises elastic polyurethane gasket, epoxy resin and/or silicone sealant;
Reservoir, wherein, described reservoir operationally by the first liquid pump for the solution pump in reservoir being delivered to described electroforming pond from described reservoir to the first direction of described electroforming solution with described liquid storage fluid communication, and described reservoir is operationally by for making the solution in described electroforming pond flow to the upflow tube of described reservoir or the second liquid pump is being communicated with described electroforming pond fluid to the second direction of described reservoir from described electroforming pond, thus formation fluidic circuit;
For heating the heating unit of the solution in described reservoir; Described heating unit comprises heating power supply and is operationally electrically connected with described heating power supply and is operationally arranged in the heating rod in described reservoir;
Electroforming power supply, described electroforming power supply is operationally with the anode titanium basket in described electroforming pond be electrically connected to carry out electroforming as the described slush mold of negative electrode;
Agitator, described agitator is operationally arranged to stir the solution in described electroforming pond; Described agitator is pneumatic blending pump; With
Be circulated throughout filter, described in be circulated throughout filter and be operationally arranged in described fluidic circuit to filter the solution flowing through described fluidic circuit;
Wherein said goods are slush mold.
9. equipment according to claim 8, is characterized in that, described slush mold is nickel metal slush mold, and described anode titanium basket is the anode titanium basket that nickel cake is housed, the nickel cake of described nickel cake to be sulphur content be 0.015-0.027 % by weight.
10. slush mold is carried out to a method for partial thickening, the method that described method is implemented the claims according to any one of 1 to 7 by the equipment used described in claim 8 is carried out.
11. 1 kinds by the method according to any one of claim 1 to 7 and/or the goods that adopt device according to claim 8 to carry out partial thickening to obtain, described goods are slush mold.
12. goods according to claim 11, is characterized in that, described slush mold is nickel metal slush mold.
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| CN107723754A (en) * | 2017-10-17 | 2018-02-23 | 天津汇友连众精密模具有限公司 | A kind of miniature slush mold preparation technology |
| CN111519217A (en) * | 2020-05-07 | 2020-08-11 | 吉林大学 | Slush molding die and reinforcement treatment method and application thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2243618A (en) * | 1990-05-04 | 1991-11-06 | Scient Generics Ltd | Electroforming mandrel; making continuously electroformed thickness modulated or perforated metal foil |
| CN1390984A (en) * | 2002-07-25 | 2003-01-15 | 美商·威米科技股份有限公司 | Manufacture of hollow metal assembly and electroplating apparatus thereof |
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| CA2285421A1 (en) * | 1997-04-18 | 1998-10-29 | Atoma International Inc. | Decorative automotive interior trim articles with cast integral light stable covering and process for making the same |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2243618A (en) * | 1990-05-04 | 1991-11-06 | Scient Generics Ltd | Electroforming mandrel; making continuously electroformed thickness modulated or perforated metal foil |
| CN1390984A (en) * | 2002-07-25 | 2003-01-15 | 美商·威米科技股份有限公司 | Manufacture of hollow metal assembly and electroplating apparatus thereof |
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