CN102953114A - Stainless steel product and preparation method thereof - Google Patents
Stainless steel product and preparation method thereof Download PDFInfo
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- CN102953114A CN102953114A CN201110239819XA CN201110239819A CN102953114A CN 102953114 A CN102953114 A CN 102953114A CN 201110239819X A CN201110239819X A CN 201110239819XA CN 201110239819 A CN201110239819 A CN 201110239819A CN 102953114 A CN102953114 A CN 102953114A
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Abstract
The invention provides a stainless steel product and a preparation method thereof. The method comprises the steps that: a stainless steel substrate to be processed is adopted as an anode and is placed in an electrolytic tank containing a polishing solution; and under the condition of plasma polishing, the stainless steel substrate is polished, such that the stainless steel product is obtained. The polishing solution comprises a first polishing component and a second polishing component. The first polishing component comprises sulfate selected from sodium sulfate and/or potassium sulfate. The second polishing component comprises nitrate and a complexing agent. The invention also provides the stainless steel product prepared through the preparation method. According to the preparation method provided by the invention, a polishing salt formula different from that of existing plasma polishing is adopted; and components with different action mechanisms are reasonably formulated. On a basis of environment protection and cost reduction, a better mirror effect is provided for the surface of the stainless steel product.
Description
Technical field
The present invention relates to the metal material surface process field, more particularly, relate to a kind of Stainless Steel Products and preparation method thereof.
Background technology
Along with being showing improvement or progress day by day and the day by day raising of people to the requirement of product of science and technology, now to metal product, for example the appearance requirement of Stainless Steel Products is more and more higher, especially to composite requests such as the roughness of product and luminance brightness, polishing both can be used as hardware, thereby decoration surface-treated end process is effectively improved its surface property and is promoted decorative effect, (for example: anodic oxidation also can be used as various surface treatment end process, differential arc oxidation, electroplate, PVD etc.) operation in early stage, the quality of quality of finish is very large on the decorative effect impact that promotes the surface treatment end process.
Common glossing mainly contains mechanical polishing, chemical rightenning, electropolishing at present, and all there is defective in various degree in these glossings.Wherein, 1, mechanical polishing is in the situation that refined abrasive is arranged by polishing machine and emery wheel, with certain pressure and speed of rotation, product surface is carried out slight machining and grinding, with except deburring, trickle not gentle damage, make it smooth, smooth treating processes.There are a lot of shortcomings in mechanical polishing: mechanical polishing requires very high to operator's operation skill, physical demands is large, and the noise pollution that produces in the course of processing and dust pollution are very large, and the healthy of operator had a strong impact on; And the workpiece complicated a little to shape is difficult to carry out mechanical polishing; Inefficiency.2, chemical rightenning: chemical rightenning is in the acid-base solution of certain temperature, composition metal products to be carried out chemical treatment to improve the process of its surface brightness.Compare with mechanical polishing, can polish the comparatively complicated and thinner metal of shape, remove the surface crystal deformation layer with chemical process, obtain the good high-quality rete of decorative surface, yet chemical polishing agent mostly is at a slow speed polishing, and polishing time is dozens of minutes at least, tens hours at most, man-hour was long, and efficient is low, access times are few, life-span is short, and the brightness of polishing is not high yet, and the local corrosion phenomenon is arranged, and can produce corrosive gases, be unfavorable for that operator's is healthy.3, electropolishing is when inserting metalwork or the plated item that is coated with metal level in the solution of certain composition as anode, this metal generation anodic polarization also produces unsettled passivation phenomenon, if current density is limited in the scope of this metal and the peculiar certain current density of this solution, lacklustre surface will become the glossy surface of polishing this moment.Electropolishing has the following advantages with respect to chemical rightenning and mechanical polishing: can access high surface smoothness and high polishing precision; Can process the workpiece of any shape and size; Polishing velocity is fast, energy consumption is little, can increase substantially production efficiency.Yet existing electropolishing usually adopts direct supply, acid polishing slurry and carries out quiet liquid processing, can only with workpiece surfaceness reduce the 1-2 level, before electropolishing, usually need to carry out mechanical polishing to workpiece, otherwise be difficult to satisfy the requirement of surface quality.
At present, those skilled in the art has proposed a kind of method of plasma electric slurry polishing, and this finishing method is different from traditional electropolishing.It is polished metal products to be put into contain NH
4 +In the polishing fluid for the basis, the again output by volts DS, so that the electrolytic solution around the anodal polished thing produces bubble bags because of the high potential gradient flash evapn, this successional bubble bags can produce on polished thing surface and coat air film, evaporation plasma in the middle of the air film produces discharge plasma because high-voltage dissociates, and by discharge plasma the lip-deep jut of polished thing is hit flatly, it is produced such as the plane as the minute surface.This method is compared with electropolishing, and polishing velocity is fast, and treatment process is simple, and solution is nontoxic, concentration is low, pollution-free.In order to obtain preferably mirror effect, often also need to carry out in advance the machinery leveling.
About giving an example of plasma electric slurry polishing, for example: the disclosed a kind of polishing fluid of CN101173361, composed of the following components by mass percentage: component A: concentration is the (NH of 1%-10%
4)
2SO
4The aqueous solution, B component: concentration is ethylenediamine tetraacetic acid (EDTA), ammonium citrate, sodium tartrate or sodium oxalate one of them or the two or more combinations of 0.2%-3%.Utilize this polishing fluid to carry out the method for non-equilibrium liquid condition composite pulse plasma electric slurry polishing, at first by above-mentioned prescription preparation polishing solution, then pending workpiece is put into the above-mentioned polishing fluid for preparing, add compound electric pulse or the with it combination of the different positive negative pulse stuffings of equivalence, control positive pulse frequency 0.5-80kHz, dutycycle 5%-95%, voltage is 200-480V, make reaction be in the most violent state, processed 1-5 minute, namely finish the polished finish process.This invention has adopted pulse to replace direct current, is conducive to isoionic generation, makes plasma discharging obtain higher kinetic energy, obtains better mirror effect and polishing velocity faster.Yet, the method of this plasma electric slurry polishing adopts ammonium salt class polishing fluid that metal works is polished, be difficult to remove the darker burr of surface of workpiece, unequal defective, usually need to carry out in advance mechanical polishing, otherwise be difficult to obtain the mirror effect of light; And the price of ammonium salt is higher.
Summary of the invention
The present invention polishes Stainless Steel Products for the method that solves plasma electric slurry polishing of the prior art adopts ammonium salt class polishing fluid, be difficult to remove the darker defective of surface of stainless steel product, usually need to carry out in advance mechanical polishing, otherwise be difficult to obtain the technical problem of bright mirror effect.
The invention provides a kind of preparation method of Stainless Steel Products, described method comprises and places the electrolyzer that fills polishing fluid as anode pending stainless steel base, under the condition of plasma electric slurry polishing described stainless steel base polished and obtains described Stainless Steel Products; Wherein, described polishing fluid contains the first polishing component and the second polishing component, and described the first polishing component comprises vitriol, and described vitriol is selected from sodium sulfate and/or vitriolate of tartar; Described the second polishing component comprises nitrate and complexing agent.
Preferably, in described polishing fluid, the concentration of described vitriol is 15-35 g/L.
Preferably, in described polishing fluid, the concentration of described nitrate is 2-8g/L, and described nitrate is selected from SODIUMNITRATE and/or saltpetre.
Preferably, in described polishing fluid, the concentration of described complexing agent is 2-6 g/L, and described complexing agent is selected from disodium ethylene diamine tetraacetate and/or Trisodium Citrate.
Preferably, described the second polishing component also comprises brightening agent, and the concentration of described brightening agent is 1-4 g/L, and described brightening agent is selected from one or more in polyoxyethylene glycol, propylene glycol, the glycerine.
Preferably, the working temperature of described polishing fluid is 70-90 ℃, and polishing time is 3-6min.
Preferably, adopt high-frequency and high-voltage spike pulse electric field that stainless steel base is carried out the plasma electric slurry polishing, the formation condition of high-frequency and high-voltage spike pulse electric field is: voltage is the direct impulse voltage of 220-320V, and pulse-repetition is 4-20KHz, and the direct impulse dutycycle is 15%-60%.
Preferably, described method also comprises pre-treatment and aftertreatment, and described pre-treatment adopts Wax removal water that described stainless steel base is cleaned, and the stainless steel base behind the described aftertreatment article on plasma electric slurry polishing carries out pickling, washing and dry.
The present invention also provides a kind of Stainless Steel Products, and described Stainless Steel Products adopts aforesaid preparation method to prepare.
Preferably, the roughness Ra of described Stainless Steel Products=0.065-0.070 micron, Rsm=0.24-0.27 millimeter; Surface albedo is 90%-95%.
Preparation method according to Stainless Steel Products provided by the invention, adopt the system different from existing polishing fluid, polishing fluid of the present invention contains the first polishing component and the second polishing component, wherein, described the first polishing component comprises vitriol, described vitriol is selected from sodium sulfate and/or vitriolate of tartar, plays macroscopical removal effect; Described the second polishing component comprises nitrate and complexing agent, plays the effect of microcosmic polishing; Described the first polishing component can be dissolved surface of stainless steel product fast, equably, remove its deep processing vestige, described the second polishing component can rise and fall by the height of smooth surface of stainless steel product on micro-scale, reduce light in its surperficial diffuse-reflectance effect, make the surface of Stainless Steel Products present specular gloss.Compare with existing polishing salt take ammonium salt as main component, the present invention has adopted the vitriol that has more price advantage, and the composition to the different mechanisms of action carries out rational proportion, is guaranteeing environmental protection and is reducing on the basis of cost, so that Stainless Steel Products has obtained better mirror effect; And preparation method of the present invention need not to carry out in advance mechanical workout, can remove the case depth defective, improves apparent effect, and technique is simple.
Embodiment
In order to make technical problem solved by the invention, technical scheme and beneficial effect clearer, below in conjunction with embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
The invention provides a kind of preparation method of Stainless Steel Products, adopt the method for plasma electric slurry polishing that Stainless Steel Products is polished, improve luminance brightness, remove the degree of depth defective of surface of stainless steel product, improve apparent effect.Preparation method of the present invention is different from existing plasma electric slurry finishing method part and is: polishing salt of the present invention is grouped into by the one-tenth of two kinds of mechanisms of action, has comprised the first polishing component and the second polishing component that plays the effect of microcosmic polishing of macroscopical removal effect.Described the first polishing component comprises sodium sulfate and/or vitriolate of tartar; The second polishing component comprises nitrate and complexing agent.In the plasma electric slurry polishing process, described macroscopic view is removed composition can dissolve surface of stainless steel product fast, equably, remove its deep processing vestige, described microcosmic polishing composition can rise and fall by the height of smooth surface of stainless steel product on micro-scale, reduce the diffuse-reflectance effect of light on surface of stainless steel product, make stainless steel surface present specular gloss.And, to compare with existing polishing salt take ammonium salt as main component, polishing salt of the present invention has more price advantage.
Specifically, the preparation method of Stainless Steel Products of the present invention comprises the steps:
Step 1, pre-treatment: Stainless Steel Products is carried out pre-treatment, obtain clean Stainless Steel Products;
Described Stainless Steel Products can be selected the Stainless Steel Products of different shape known in those skilled in the art and function, for example: the stainless steel casing of mobile phone.Because preparation method of the present invention can remove the degree of depth defective of surface of stainless steel product, thus can effects on surface be covered with impression, coarse and lusterless stainless steel pressed part is processed.
Because preparation method of the present invention can remove the degree of depth defective of surface of stainless steel product, thereby described pre-treatment can not comprise mechanical polishing.The pre-treatment of this step comprises paraffin removal, hot water wash and normal temperature washing.For example: Stainless Steel Products is hung in the immersion Wax removal water, heating is 2-6 minute in 60 ℃-80 ℃ Wax removal water water bath with thermostatic control, soaked in 60 ℃-80 ℃ hot water 0.5-1 minute, last normal temperature washing obtains surface clean and with the Stainless Steel Products of certain glossiness again.
Wherein, the method for paraffin removal is to well known to a person skilled in the art the whole bag of tricks that can be used for various metal productss are carried out paraffin removal, preferably uses Wax removal water water bath with thermostatic control cleaning workpiece surface.Adopt deoiling step can remove grease, the dirt of surface of stainless steel product, and make product surface slightly be with brightness.The hot water that washing step is used and normal-temperature water can be water of the prior art, for example: one or more in tap water, deionized water, pure water, the distilled water.
Step 2, plasma electric slurry polishing: will place the polishing trough that fills polishing fluid as anode through pretreated Stainless Steel Products, under the condition of plasma electric slurry polishing, described stainless steel base is polished, obtain having the Stainless Steel Products of bright mirror surface effect.
As mentioned above, the polishing fluid that adopts of plasma electric slurry polishing of the present invention is different from existing polishing fluid.Specifically, the polishing fluid that plasma electric slurry polishing of the present invention adopts is non-ammonium salt polishing fluid system, contain the polishing salt component of two kinds of different mechanisms of action, comprise: the first polishing component and the second polishing component that plays the effect of microcosmic polishing that play macroscopical removal effect.
Specifically, described the first polishing component is vitriol, the concentration of described vitriol is 15-35 g/L, described vitriol is selected from sodium sulfate and/or vitriolate of tartar, in the plasma electric slurry polishing process, described vitriol has the effect of leveling, can dissolve fast, equably the oxide film that surface of stainless steel product forms, remove the vestige of its deep processing, play macroscopic view and remove the surface of stainless steel product defective.
Described the second polishing component comprises nitrate and complexing agent; Wherein, the concentration of described nitrate is 2-8g/L, has the effect of the oxidation film layer generation that promotes stainless steel surface, has simultaneously the effect of the brightness raising that is partly dissolved oxide film and makes stainless steel surface.The preferred SODIUMNITRATE of described nitrate and/or saltpetre, preferred nitrate conducting electricity very well in the aqueous solution, and easily process, be conducive to the formation of rete.
Described complexing agent can be the common complexing agent in this area, its composition and content are known to those skilled in the art, such as: described complexing agent is selected from one or more in sodium tartrate, sodium oxalate, ammonium citrate, disodium ethylene diamine tetraacetate, the Trisodium Citrate etc.In the preferred case, the concentration of described complexing agent is 2-6 g/L, and described complexing agent is selected from disodium ethylene diamine tetraacetate and/or Trisodium Citrate, plays the effect of the metal ions such as iron ion in the complexing polishing fluid, avoids the ion hydrolysis.
Described the second polishing component also optionally comprises brightening agent, described brightening agent can be the common brightening agent in this area, its composition and content are known to those skilled in the art, such as: one or more in Sunmorl N 60S, sodium lauryl sulphate, Isosorbide-5-Nitrae-butynediol, polyoxyethylene glycol, propylene glycol, the glycerine etc.In the preferred case, the concentration of described brightening agent is 1-4 g/L, described brightening agent is selected from one or more in polyoxyethylene glycol, propylene glycol, the glycerine, preferred brightening agent plays the effect of inhibiter simultaneously, can regulate the erosion rate of surface of stainless steel product, improve the leveling of polishing fluid, the microscopic protrusions of guaranteeing surface of stainless steel product is in active condition and by optimum solvation.
By the rational proportion of above-mentioned each component, so that the second polishing component can rise and fall by the height of smooth surface of stainless steel product, reduce light in the diffuse-reflectance effect of surface of stainless steel product on micro-scale, make stainless steel surface present specular gloss.
Polishing fluid of the present invention need to heat and keep constant temperature, be that polishing fluid system of the present invention energising in certain heated constant temperature environment is used, the working temperature of polishing fluid is controlled at 70-90 ℃, be preferably 75-85 ℃, in the use procedure polishing fluid is carried out agitation as appropriate, polishing time continues at least 3min, and preferably, polishing time is 3-6min.
Another main improvements of the present invention are, the present invention applies high-frequency and high-voltage spike pulse electric field stainless steel base is carried out the processing of plasma electric slurry polishing, the formation condition of described high-frequency and high-voltage spike pulse electric field is: voltage is the direct impulse voltage of 220-320V, pulse-repetition is 4-20KHz, and the direct impulse dutycycle is 15%-60%.Under high-frequency and high-voltage spike pulse electric field, electric field 3-6min(conduction time is polishing time) stainless steel base is polished.Produce high-frequency and high-voltage spike pulse electric field by above-mentioned condition, this moment, stable gas blanket appearred in the surface of Stainless Steel Products, this gas blanket separates surface and the polishing fluid of Stainless Steel Products, thereby make the electrochemical reaction that produces strong plasma body between the surface of Stainless Steel Products and the polishing fluid steam, make processed surface produce anodic oxidation, simultaneously make again zone of oxidation be subject to chemical erosion, polishing effect when oxidation rate equals erosive velocity, occurs.Simultaneously, because the present invention adopts the polishing salt component of two kinds of different mechanisms of action, thereby in the plasma electric slurry polishing process, has macroscopical removal process and microcosmic polishing process, the macroscopic view removal can be dissolved surface of stainless steel product fast, equably, removes its deep processing vestige; The microcosmic polishing can rise and fall at the height of micro-scale leveling surface of stainless steel product, reduces light in the diffuse-reflectance effect of surface of stainless steel product, makes stainless steel surface present specular gloss.
Be understandable that, namely make Stainless Steel Products through the plasma electric slurry polishing, but in general, also need Stainless Steel Products is carried out aftertreatment, just finish at last whole manufacture craft, obtain clean Stainless Steel Products.
Step 3, aftertreatment: Stainless Steel Products is carried out aftertreatment, carry out successively obtaining having the Stainless Steel Products of mirror effect after pickling, washing and the drying.The method of described pickling, washing has been conventionally known to one of skill in the art, and for example: pickling can adopt hydrochloric acid or citric acid dilute aqueous solution as washing lotion.The used water of washing step is water of the prior art, for example: one or more of tap water, deionized water, pure water, distilled water.
The Stainless Steel Products of the present invention that preparation method by above-mentioned Stainless Steel Products makes, the roughness Ra of prepared Stainless Steel Products=0.065-0.070 micron, Rsm=0.24-0.27 millimeter; Surface albedo is 90%-95%.
In a word, the present invention adopts the polishing salt prescription that is different from existing plasma electric slurry polishing, carry out rational proportion by the composition to the different mechanisms of action, having guaranteed environmental protection and having reduced on the basis of cost, make the surface of Stainless Steel Products obtain better mirror effect.
The below adopts the mode of embodiment that the present invention is described in further detail.
Embodiment 1
The present embodiment 1 is for illustrating Stainless Steel Products provided by the present invention and preparation method thereof, and the preparation method of described Stainless Steel Products comprises the steps:
Step 1, pre-treatment
The Wax removal water (volumetric concentration of Wax removal water is 6 V%) of preparation, thermostatically heating to 80 ℃ immerses pending Stainless Steel Products C1 in the Wax removal water, stirs and takes out after soaking 4min; Then take out after in 80 ℃ deionized water, stirring immersion 0.5min; Use again the deionized water rinsing of normal temperature clean;
Step 2, plasma electric slurry polishing
Preparation 10L polishing fluid, described polishing fluid comprises: the sodium sulfate of component A:15g/L; B component: 10g/L SODIUMNITRATE, 0.91 v% Polyethylene Glycol-600 and 1 V % propylene glycol as complexing agent, are mixed with polishing fluid with deionized water as solvent with said components A and B component as brightening agent (doubling as inhibiter), 3g/L EDETATE SODIUM.Polishing fluid poured into as conducting medium be heated to 80 ℃ of constant temperature in the polishing trough, to pass through pretreated Stainless Steel Products as anode, stainless steel plate is that negative electrode places described polishing fluid, adopt high-frequency and high-voltage spike pulse electric field that Stainless Steel Products is polished: pulse is made as positive pulse, pulsed voltage is 260V, frequency is 5KHz, and dutycycle is 40%, and polishing time is 4min;
Step 3, aftertreatment
Take out through the Stainless Steel Products behind the plasma electric slurry polishing, carry out successively pickling, wash, dry up, wherein, pickling is 5 V% aqueous hydrochloric acids, washes to be deionized water, obtains having the Stainless Steel Products S1 of mirror effect after finishing dealing with.
Embodiment 2
The present embodiment 2 is for illustrating Stainless Steel Products provided by the present invention and preparation method thereof, and the preparation method of described Stainless Steel Products comprises the steps:
Step 1, pre-treatment
The Wax removal water (volumetric concentration of Wax removal water is 10 V%) of preparation, thermostatically heating to 75 ℃ immerses pending Stainless Steel Products C1 in the Wax removal water, stirs and takes out after soaking 3min; Then take out after in 75 ℃ deionized water, stirring immersion 0.5min; Use again the deionized water rinsing of normal temperature clean;
Step 2, plasma electric slurry polishing
Preparation 10L polishing fluid, described polishing fluid comprises: the vitriolate of tartar of component A:35g/L; B component: 8g/L SODIUMNITRATE, 1.82v% Polyethylene Glycol-600 as complexing agent, are mixed with polishing fluid with deionized water as solvent with said components A and B component as brightening agent (doubling as inhibiter), 3g/L EDETATE SODIUM.Polishing fluid poured into as conducting medium be heated to 85 ℃ of constant temperature in the polishing trough, to pass through pretreated Stainless Steel Products as anode, stainless steel plate is that negative electrode places described polishing fluid, adopt high-frequency and high-voltage spike pulse electric field that Stainless Steel Products is polished: pulse is made as positive pulse, pulsed voltage is 270V, frequency is 10KHz, and dutycycle is 45%, and polishing time is 6min;
Step 3, aftertreatment
Take out through the Stainless Steel Products behind the plasma electric slurry polishing, carry out successively pickling, wash, dry up, wherein, pickling is the 8V% aqueous hydrochloric acid, washes to be deionized water, obtains having the Stainless Steel Products S2 of mirror effect after finishing dealing with.
Embodiment 3
The present embodiment 3 is for illustrating Stainless Steel Products provided by the present invention and preparation method thereof, and the preparation method of described Stainless Steel Products comprises the steps:
Step 1, pre-treatment
The Wax removal water (volumetric concentration of Wax removal water is 12 V%) of preparation, thermostatically heating to 70 ℃ immerses pending Stainless Steel Products C1 in the Wax removal water, stirs and takes out after soaking 2min; Then take out after in 70 ℃ deionized water, stirring immersion 1min; Use again the deionized water rinsing of normal temperature clean;
Step 2, plasma electric slurry polishing
Preparation 10L polishing fluid, described polishing fluid comprises: the sodium sulfate of component A:25g/L; B component: 5g/L saltpetre, 3v% Polyethylene Glycol-600 as complexing agent, are mixed with polishing fluid with deionized water as solvent with said components A and B component as brightening agent (doubling as inhibiter), 2g/L Trisodium Citrate.Polishing fluid poured into as conducting medium be heated to 90 ℃ of constant temperature in the polishing trough, to pass through pretreated Stainless Steel Products as anode, stainless steel plate is that negative electrode places described polishing fluid, adopt high-frequency and high-voltage spike pulse electric field that Stainless Steel Products is polished: pulse is made as positive pulse, pulsed voltage is 250V, frequency is 15KHz, and dutycycle is 20%, and polishing time is 4min;
Step 3, aftertreatment
Take out through the Stainless Steel Products behind the plasma electric slurry polishing, carry out successively pickling, wash, dry up, wherein, pickling is the 10V% aqueous hydrochloric acid, washes to be deionized water, obtains having the Stainless Steel Products S3 of mirror effect after finishing dealing with.
Embodiment 4
The present embodiment 4 is for illustrating Stainless Steel Products provided by the present invention and preparation method thereof, and the preparation method of described Stainless Steel Products comprises the steps:
Step 1, pre-treatment
The Wax removal water (volumetric concentration of Wax removal water is 12 V%) of preparation, thermostatically heating to 70 ℃ immerses pending Stainless Steel Products C1 in the Wax removal water, stirs and takes out after soaking 2min; Then take out after in 70 ℃ deionized water, stirring immersion 1min; Use again the deionized water rinsing of normal temperature clean;
Step 2, plasma electric slurry polishing
Preparation 10L polishing fluid, described polishing fluid comprises: the vitriolate of tartar of component A:25g/L; B component: 5g/L saltpetre, 2g/L EDETATE SODIUM are mixed with polishing fluid with deionized water as solvent with said components A and B component as complexing agent.Polishing fluid poured into as conducting medium be heated to 90 ℃ of constant temperature in the polishing trough, to pass through pretreated Stainless Steel Products as anode, stainless steel plate is that negative electrode places described polishing fluid, adopt high-frequency and high-voltage spike pulse electric field that Stainless Steel Products is polished: pulse is made as positive pulse, pulsed voltage is 300V, frequency is 15KHz, and dutycycle is 50%, and polishing time is 4min;
Step 3, aftertreatment
Take out through the Stainless Steel Products behind the plasma electric slurry polishing, carry out successively pickling, wash, dry up, wherein, pickling is the 10V% aqueous hydrochloric acid, washes to be deionized water, obtains having the Stainless Steel Products S4 of mirror effect after finishing dealing with.
Comparative Examples 1
Comparative Examples 1 is untreated Stainless Steel Products C1.
Comparative Examples 2
Be to have increased pre-treatment step with the difference of embodiment 1, make Stainless Steel Products C1 carry out again the plasma electric slurry polishing through mechanical polishing first, mechanical polishing is to smear purple wax at the fiber crops wheel, polished 1 minute, after removing the darker impression in surface, after carrying out the processing of embodiment 1 again, obtain Stainless Steel Products C2.
Comparative Examples 3
Be with the difference of embodiment 1: employing be the ammonium salt prescription, contain 35g/L ammonium sulfate, 15g/L ammonium citrate, 5g/L sodium sulfate, 0.5g/L Trisodium Citrate in the polishing fluid, the Stainless Steel Products after the polishing obtains Stainless Steel Products C3 after washing, drying up.
Performance test
1, surfaceness
Adopt GB/T3505-2000 that the Stainless Steel Products S1-S4 of embodiment 1-4 and the Stainless Steel Products C1-C3 of Comparative Examples 1-3 are carried out the surfaceness test, measure with the TR200 Manual roughness devices of Beijing Time Incorporation, test result is as shown in table 1.Wherein: R
aThe wide arithmetic average deviation of finger wheel refers in sample length the arithmetical av of profile offset distance absolute value; R
SmThe width average of the wide unit of finger wheel is the mean value of the spacing of profile irregularity in sample length; R
aLess, R
SmThe planeness of larger presentation surface is better.
2, surface albedo
Adopt GB2680-1994 that the Stainless Steel Products S1-S4 of embodiment 1-4 and the Stainless Steel Products C1-C3 of Comparative Examples 1-3 are carried out the surface albedo test, the ETF-05A type surface albedo tester that adopts Shenzhen to open special Science and Technology Ltd. is measured, and test result is as shown in table 1.
Table 1
| Sample number into spectrum | Ra（μm） | R Sm（mm） | Surface albedo (%) |
| S1 | 0.0654 | 0.2670 | 92 |
| S2 | 0.0693 | 0.2457 | 90 |
| S3 | 0.0690 | 0.2477 | 90 |
| S4 | 0.0698 | 0.2420 | 90 |
| C1 | 0.2037 | 0.0443 | 35 |
| C2 | 0.0672 | 0.2580 | 90 |
| C3 | 0.0750 | 0.2068 | 75 |
Can be found out by upper table 1: embodiment 1-4 and Comparative Examples 1 are contrasted as can be known, and preparation method of the present invention can well remove the surface imperfection of Stainless Steel Products, makes the surfacing light of Stainless Steel Products; Embodiment 1-4 and Comparative Examples 2 are contrasted as can be known, and the effect difference is little, proves absolutely: preparation method of the present invention need not to adopt mechanical polishing to carry out pre-treatment, can promote surface finish and the luminance brightness of Stainless Steel Products, obtains the mirror effect of light.With 3 contrasts of embodiment 1-4 and Comparative Examples as can be known, adopt polishing salt of the present invention to carry out the plasma electric slurry polishing after, the surface brightness of resulting Stainless Steel Products and finish are all good than adopting existing ammonium salt to fill a prescription.
In sum, embodiments of the invention 1-4 can remove the darker defective of surface of stainless steel product, need not to carry out in advance mechanical polishing, can improve the apparent effect of Stainless Steel Products, and compare with existing polishing salt take ammonium salt as main component, the present invention has adopted the vitriol that has more price advantage, guaranteeing environmental protection and reducing on the basis of cost, makes Stainless Steel Products obtain better mirror effect.
The above only is preferred embodiment of the present invention, not in order to limiting the present invention, all any modifications of doing within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the preparation method of a Stainless Steel Products, it is characterized in that, described method comprises and places the polishing trough that fills polishing fluid as anode pending stainless steel base, under the condition of plasma electric slurry polishing described stainless steel base polished and obtains described Stainless Steel Products; Wherein, described polishing fluid contains the first polishing component and the second polishing component, and described the first polishing component is vitriol, and described vitriol is selected from sodium sulfate and/or vitriolate of tartar; Described the second polishing component comprises nitrate and complexing agent.
2. method according to claim 1 is characterized in that, in described polishing fluid, the concentration of described vitriol is 15-35 g/L.
3. method according to claim 1 is characterized in that, in described polishing fluid, the concentration of described nitrate is 2-8g/L, and described nitrate is selected from SODIUMNITRATE and/or saltpetre.
4. method according to claim 1 is characterized in that, in described polishing fluid, the concentration of described complexing agent is 2-6 g/L, and described complexing agent is selected from disodium ethylene diamine tetraacetate and/or Trisodium Citrate.
5. method according to claim 1 is characterized in that, described the second polishing component also comprises brightening agent, and the concentration of described brightening agent is 1-4 g/L, and described brightening agent is selected from one or more in polyoxyethylene glycol, propylene glycol, the glycerine.
6. method according to claim 1 is characterized in that, the working temperature of described polishing fluid is 70-90 ℃, and polishing time is 3-6min.
7. method according to claim 1, it is characterized in that, adopt high-frequency and high-voltage spike pulse electric field that stainless steel base is carried out the plasma electric slurry polishing, the formation condition of high-frequency and high-voltage spike pulse electric field is: voltage is the direct impulse voltage of 220-320V, pulse-repetition is 4-20KHz, and the direct impulse dutycycle is 15%-60%.
8. method according to claim 1, it is characterized in that, described method also comprises pre-treatment and aftertreatment, and described pre-treatment adopts Wax removal water that described stainless steel base is cleaned, and the stainless steel base behind the described aftertreatment article on plasma electric slurry polishing carries out pickling, washing and dry.
9. a Stainless Steel Products is characterized in that, described Stainless Steel Products adopts and prepares such as the described preparation method of claim 1-8.
10. Stainless Steel Products according to claim 9 is characterized in that, the roughness Ra of described Stainless Steel Products=0.065-0.070 micron, Rsm=0.24-0.27 millimeter; Surface albedo is 90%-95%.
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