CN1222585A - Metal surface treating method - Google Patents
Metal surface treating method Download PDFInfo
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- CN1222585A CN1222585A CN 97120156 CN97120156A CN1222585A CN 1222585 A CN1222585 A CN 1222585A CN 97120156 CN97120156 CN 97120156 CN 97120156 A CN97120156 A CN 97120156A CN 1222585 A CN1222585 A CN 1222585A
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Abstract
The surface treating method for metal parts, especially metal pot, includes sand blasting to form rough surface, phosphate treatment to form rustproof layer and increase the adhesive power of base material, and fluororesin coating through heating, stoving, sintering and forming. Alternatively, the metal surface may be first degreased and then roughened with acid or alkali etching agent before successive treatment.
Description
The present invention relates to the pan surface treatment method of a kind of metal surface treating method, particularly metal material.
Present metal finishing needs different modes according to its purposes substantially, and the articles for use that are applied on the industry are also too numerous to enumerately many, promptly with employed pan in the family kitchen, its used material is nothing more than iron, aluminium, metals such as stainless steel, fry in shallow oil now, fry, boil, the fried pan that waits uses to such an extent that the not outer Teflon of surface treatment quite widely (TEFLON) is handled (or claiming fluoroplast processing), its structure and processing mode such as Fig. 6, shown in Figure 7, be attached to pot face 5 for trying to achieve good fluoroplast 51, at first must impact shrinkage pool 52 in the metallic surface, at present general this kind sandblasting all selects for use the glass sand of granularity 60#-100# or the single kind spray of aluminum oxide to hit, make and cause at the pot face that the about 10-25 μ of degree of depth m's is recessed, the fluoroplast 51 of spraying can effectively be adhered to, give heating, drying after to be dried and make setting and hardening, and 51 layers of advantage of the fluoroplast of Teflon are to make not being stained with of metal pan (gluing) pot functional, make food be difficult for burn (bake) Jiao and than easy cleaning, but aforesaid surface treatment, one because pot face 5 ballistic shrinkage pools are shallow and little smooth again even, fluoroplast 51 sticking power that make spraying are good and come off easily, so though its characteristic has not being stained with property, but the bad of this conjugation makes it not wear-resisting, therefore the life-span is impermanent, as shown in Figure 8, shovel spoon at metal material moves in the pot internal friction, make fluoroplast 51 be blocky wearing and tearing to peel off with very fast, the protoplasm layer of metal pan appears in one's mind again, losing former available energy, is the mortal wound of its common maximum
Because the defective on aforementioned metal Cooker structure and manufacture method undesirable and practical, the experience that the long-pending professional production for many years of the inventor is made, actively study, design and develop, and for making the present invention can bring into play utility value on the better industry, more go through repeatedly studying improvement during this time, finish a kind of revolutionary metal surface treating method finally and be applied in pan and improve its present defect situation.
Main purpose of the present invention promptly is to provide a kind of metal surface treating method, and its utilization (Teflon) fluoroplast is not stained with, anti-adhesive properties, with combining of resin and metallic surface brute force, it is not come off and Chang Baoqi performance and work-ing life.
For achieving the above object, manufacture method of the present invention is the steel sand with the thickness inequality, steel ball or steel gravel or three mix, do sandblasting with the powerful metallic surface of impacting of high pressure, make the surface produce three kinds of vestige differences, the depth, the uneven convex-concave surface of thickness, do antirust with the phosphate coating processing again, anti-corrosion and reinforcement and fluoroplast adherence, then (Teflon) fluoroplast is sprayed at the good phosphatization epithelium surface of tool porousness and absorptivity, fluoroplast can be carried fully steep the thickness inequality, the inside, slit, the lowest point brute force of shape inequality is adhered to, again in dry post-heating drying forming.Perhaps sandblasting is changed with the metal material and go ahead of the rest after the degreasing, make its surface roughening, go subsequent disposal again with the acid-basicity etching reagent.
A kind of metal surface treating method, moulding is characterized in that via sandblasting, phosphate coating processing, fluoroplast processing and heating, drying:
(1) sandblasting: with thickness steel sand or steel ball or have the steel gravel of angle of keenness or the three mixes, impacting with high pressure is quick-fried to be penetrated in metallic surface, makes it produce diameter, depth difference, uneven, thickness is inhomogeneous and shrinkage pool that shape is mixed and disorderly;
(2) phosphate coating is handled: epithelium is done micro-butyrous degreasing before generating, multiple salt with manganous phosphate, zinc phosphate or tertiary iron phosphate adds interfacial agent and promotor, under the physical properties that does not influence the metal base body, make the surface of metal base produce dissolving, generate the mixed and disorderly fine uneven surface of one deck on the one hand simultaneously, promptly generate skin membrane, its process is adjusted alligatoring → phosphate coating processing → washing → washing → hot water wash → drying → application as shown in the formula: degreasing → washing → washing → drying → surface; Its treatment condition are PH4-6, between 40-60 ℃, about 5-10 minute with the dipping or spray method carry out, must carry out next step in the short period of time after the drying;
(3) fluoroplast processing: with each in conjunction with the different floating state suspension liquid fluoroplast of number, be sprayed at the shrinkage pool surface that is attached with phosphate coating, make fluoroplast can be impregnated into each the inside, shrinkage pool trough slit of thickness inequality fully, strong adherence is in the epithelium surface;
(4) heating, drying moulding: after the fluoroplast drying, put into stove and heat, make particle dissolve mutually in conjunction with and setting and hardening form.
A kind of metal surface treating method, moulding is characterized in that via chemical milling, phosphate coating processing, fluoroplast processing and heating, drying:
(1) chemical milling: its etching reagent can be divided into acid and alkali, wherein acid etching be add sulfuric acid or nitric acid 100g/l with acid ammonium fluoride 200g/l mixture with 25-40 ℃ through the 60-100 etching of second, or add ammonium sulfate with ammonium fluoride 50-150g/l and mix in right amount, at normal temperatures through 2-3 minute etching, the mixture that alkaline etching then adds SODIUMNITRATE 250g/l with sodium hydroxide 200g/l forms with the 65-80 ℃ of etching through 30-60 second, or add Sodium Fluoride 20-40g/l with sodium hydroxide 50-100g/l and mix, form with 60-80 ℃ of etching through 1-3 minute;
(2) phosphate coating is handled: epithelium is done micro-butyrous degreasing before generating, multiple salt with manganous phosphate, zinc phosphate or tertiary iron phosphate adds interfacial agent and promotor, under the physical properties that does not influence the metal base body, make the surface of metal base produce dissolving, generate the mixed and disorderly fine uneven surface of one deck on the one hand simultaneously, promptly generate skin membrane, its process is adjusted alligatoring → phosphate coating processing → washing → washing → hot water wash → drying → application as shown in the formula: degreasing → washing → washing → drying → surface; Its treatment condition are PH4-6, between 40-60 ℃, about 5-10 minute with the dipping or spray method carry out, must carry out next step in the short period of time after the drying:
(3) fluoroplast processing: with each in conjunction with the different floating state suspension liquid fluoroplast of number, be sprayed at the shrinkage pool surface that is attached with phosphate coating, make fluoroplast can be impregnated into each the inside, shrinkage pool trough slit of thickness inequality fully, strong adherence is in the epithelium surface;
(4) heating, drying moulding: after the fluoroplast drying, put into stove and heat, make particle dissolve mutually in conjunction with and setting and hardening form.
A kind of metal surface treating method is characterized in that: forms the shrinkage pool structure that uneven shape differs in the metallic surface, adheres to one deck phosphate coating in it, and adherence one deck fluoroplast on the phosphate coating.
Sandblasting is with the powerful pressurized air of 5-15kg/cm, borrows nozzle ejection or to fall the powerful centrifugal force of air blast fin that wheel runs up, impacts quick-fried penetrating in metallic surface, and it is good making the about 0.5-1.5m/m diameter of its generation, shrinkage pool that 30-80 μ m is dark.
After phosphate coating was handled, it was good that generation has the phosphatization epithelium of 1-2.5g/m.
The moulding of fluoroplast heating, drying be in stove earlier with 120 ℃ of left and right sides temperature after about 5 minutes, transfer to 300-450 ℃ of temperature 5-10 minute again for good
Processing of the present invention; be to process in metallic surfaces such as iron, aluminium or stainless steels; it is respond well; particularly use outstanding tool effect on the embodiment of pan, and it also can be applicable to other industrial purposes, for example ball mould in the die production or footwear mould; need demoulding release preferably also can do this surface treatment; so all those who are familiar with this art, institute's derived product in not breaking away from this technical field all should belong to category of the present invention when understanding.
What the contriver wished to propose to emphasize is, simple in the metallic surface, particularly to do fluoroplast processing be not the present invention institute proposition first on the pan surface, on the other hand, do in the metallic surface phosphate coating handle with antirust and increase the also non-the present invention of adherence institute proposition first, but the above-mentioned phosphate coating that comprises that describes in detail is handled and the fluoroplast processing treatment, cooperate different consistent schedulings of creating conditions, be used in metal finishing, pan surface working particularly, the manufacture method of this globality then is proposed by the invention, and this structure is also innovated.Therefore, metal surface treating method provided by the present invention and the structure that generated thereof and can reach the intended purposes of invention fully unlike the prior art, not only meet practicality and tool height progressive, and darker tool exploitation is worth on industry is utilized
Be that embodiment further specifies manufacturing process of the present invention and constitutional features thereof, performance, purpose below in conjunction with accompanying drawing and annex and with the pan.
Fig. 1 is the metal section synoptic diagram after the sandblasting of the present invention.
Fig. 2 is the metal section synoptic diagram after phosphatization epithelium of the present invention is handled.
Fig. 3 finishes diagrammatic cross-section for fluoroplast spray sintering of the present invention.
Fig. 4 for the present invention with slice operation for some time after the tectonic profile synoptic diagram.
Fig. 5 generates phosphate coating sectional model figure for the present invention
Fig. 6 is the diagrammatic cross-section after the sandblasting of prior art metallic surface.
The diagrammatic cross-section that Fig. 7 finishes for prior art fluoroplast spray sintering.
Fig. 8 is that the prior art metal cooker surface is with slice operation back tectonic profile synoptic diagram.
Fig. 9 is the sand blasted surface image photomontage figure of pan of the present invention surface thickness inequality.
Figure 10 is that pan alramenting epithelium of the present invention is handled back metallic surface image photomontage figure
Figure 11 is a metallic surface image photomontage enlarged view after the pan surface chemistry of the present invention etching.
Figure 12 is the long-time rear surface image photomontage enlarged view that uses in pan of the present invention surface.
See also Fig. 1 and shown in Figure 9, manufacturing course of the present invention is as follows:
(1) sandblasting: for improving the adherence of fluoroplast, select thickness steel sand or steel ball for use or have the steel gravel of angle of keenness or the three mixes, powerful pressurized air with 5-15kg/cm, by nozzle ejection or to fall the powerful centrifugal force of air blast fin that wheel runs up, impact quick-fried penetrating in the surface of metal 1, make the depth difference of its generation three kinds of vestiges of mixing and about 0.5-1.5m/m diameter, 30-80 μ m, uneven, thickness is inhomogeneous and the shrinkage pool 11 of shape separation and war, the surface also can be independent certainly select for use steel sand or steel ball or the spray of steel gravel hit.
(2) phosphate coating is handled: as Fig. 2, shown in Figure 5, before forming, does epithelium micro-butyrous degreasing, multiple salt with manganous phosphate, zinc phosphate or tertiary iron phosphate adds interfacial agent and promotor, under the physical properties that does not influence the metal base body, make the surface of metal base produce dissolving, form on the one hand the mixed and disorderly fine uneven surface of one deck simultaneously, promptly generate phosphatization epithelium (12) layer that 1-2.5g/m is arranged, (cooperating shown in Figure 10) its process roughly as shown in the formula:
Alligatoring → phosphate coating processing → washing → washing → hot water wash → drying → application is adjusted on degreasing → washing → washing → drying → surface
Its treatment condition approximately are PH4-6, between 40-60 ℃, about 5-10 minute with the dipping or spray method carry out, must carry out next step in the short period of time after the drying.
In particular, phosphate coating is handled, originally the antirust processing that was the iron and steel material is studied, its bottom that is applied to before the coated metal is antirust, and increasing the solidity to corrosion and the adherence of its base material, this epithelium has a kind of intramolecularly gravitation to produce to coating, so coating is had the good effect of adherence, though what its thickness can't be correct measures, (proportion of epithelium is about 1 can to calculate its thickness with epithelium weight.2); with regard to metal base of the present invention; be to form mixed and disorderly shape uneven surface with sharp-pointed powder emery; so the sharp comer of powder emery might rupture and be present in the base material shrinkage pool; for preventing that its fracture acute angle from producing corrosion after application; and handle with phosphate coating earlier; make the sharp comer that ruptures on metal base do corrosion protection and increase tack; avoid it after the bottom sharp comer of fluoroplast spraying produces oxidation or gets rusty; so that the fluoroplast film comes off; this is an innovation greatly of fluoroplast treatment technology, also is the principal feature place that prior art non-stick cooker processing mode differs widely.
(3) fluoroplast processing: as shown in Figure 3, various with 0.2-0.5 μ m particulate in conjunction with the different floating state suspension liquid fluoroplasts of number as homogeneous polymerization fluoroplasts such as polytetrafluoroethylene (PTFE)s, be sprayed at shrinkage pool 11 and be attached to the surface of phosphate coating 12, make fluoroplast 13 can be impregnated into each the inside, shrinkage pool 11 trough slits of thickness inequality fully, strong adherence is in epithelium 12 surfaces.
(4) heating, drying moulding: after fluoroplast 13 dryings, put into by 40 ℃ and be raised to 120-400 ℃ even can reach 450 ℃ stove and heat gradually, make particle dissolve combination and setting and hardening mutually, reach very anti-corrosion, the splendid rigid surface of being stained with property not, wherein heating if with 120 ℃ of left and right sides temperature after about 5 minutes, transfer to again 300-450 ℃ of temperature 5-10 minute then better effects if certainly its condition look coating of different nature and variant.
As Fig. 4 and shown in Figure 12, even pot face after this surface treatment is in use for some time, after its sharp-pointed place shovel falls, exist (black shown in Figure 12 partly is fluoroplast) that fluoroplast is still still arranged at the lowest point recess keeps lubricated not the being stained with property that reaches of its good high-quality.
In addition, the sandblasting of abovementioned steps (), also can change because of different metal materials and pan purposes demand, pot within the electronic pot for example, its surface roughness require more carefully, more level and smooth, it also can omit grit blast procedure, and the metal material is gone ahead of the rest after the degreasing, make its surface roughening with the acid-basicity chemical etchant, as shown in figure 11, capable again subsequent disposal.
The etching reagent of this chemical milling can be divided into acid and alkali two aspects, wherein acid etching be for example add sulfuric acid or nitric acid 100g/l with acid ammonium fluoride 200g/l mixture with 25-40 ℃ through the 60-100 etching of second, or add ammonium sulfate with ammonium fluoride 50-150g/l and mix in right amount, at normal temperatures through 2-3 minute etching, the mixture that alkaline etching then adds SODIUMNITRATE 250g/l with sodium hydroxide 200g/l forms with the 65-80 ℃ of etching through 30-60 second, or add Sodium Fluoride 20-40g/l with sodium hydroxide 50-100g/l and mix, form with 60-80 ℃ of etching through 1-3 minute.
Claims (6)
1, a kind of metal surface treating method, moulding is characterized in that via sandblasting, phosphate coating processing, fluoroplast processing and heating, drying:
(1) sandblasting: with thickness steel sand or steel ball or have the steel gravel of angle of keenness or the three mixes, impacting with high pressure is quick-fried to be penetrated in metallic surface, makes it produce diameter, depth difference, uneven, thickness is inhomogeneous and shrinkage pool that shape is mixed and disorderly;
(2) phosphate coating is handled: epithelium is done micro-butyrous degreasing before generating, multiple salt with manganous phosphate, zinc phosphate or tertiary iron phosphate adds interfacial agent and promotor, under the physical properties that does not influence the metal base body, make the surface of metal base produce dissolving, generate the mixed and disorderly fine uneven surface of one deck on the one hand simultaneously, promptly generate skin membrane, its process is adjusted alligatoring → phosphate coating processing → washing → washing → hot water wash → drying → application as shown in the formula: degreasing → washing → washing → drying → surface; Its treatment condition are PH4-6, between 40-60 ℃, about 5-10 minute with the dipping or spray method carry out, must carry out next step in the short period of time after the drying;
(3) fluoroplast processing: with each in conjunction with the different floating state suspension liquid fluoroplast of number, be sprayed at the shrinkage pool surface that is attached with phosphate coating, make fluoroplast can be impregnated into each the inside, shrinkage pool trough slit of thickness inequality fully, strong adherence is in the epithelium surface;
(4) heating, drying moulding: after the fluoroplast drying, put into stove and heat, make particle dissolve mutually in conjunction with and setting and hardening form.
2, a kind of metal surface treating method, moulding is characterized in that via chemical milling, phosphate coating processing, fluoroplast processing and heating, drying:
(1) chemical milling: its etching reagent can be divided into acid and alkali, wherein acid etching be add sulfuric acid or nitric acid 100g/l with acid ammonium fluoride 200g/l mixture with 25-40 ℃ through the 60-100 etching of second, or add ammonium sulfate with ammonium fluoride 50-150g/l and mix in right amount, at normal temperatures through 2-3 minute etching, the mixture that alkaline etching then adds SODIUMNITRATE 250g/l with sodium hydroxide 200g/l forms with the 65-80 ℃ of etching through 30-60 second, or add Sodium Fluoride 20-40g/l with sodium hydroxide 50-100g/l and mix, form with 60-80 ℃ of etching through 1-3 minute;
(2) phosphate coating is handled: epithelium is done micro-butyrous degreasing before generating, multiple salt with manganous phosphate, zinc phosphate or tertiary iron phosphate adds interfacial agent and promotor, under the physical properties that does not influence the metal base body, make the surface of metal base produce dissolving, generate the mixed and disorderly fine uneven surface of one deck on the one hand simultaneously, promptly generate skin membrane, its process is adjusted alligatoring → phosphate coating processing → washing → washing → hot water wash → drying → application as shown in the formula: degreasing → wash → drying → surface; Its treatment condition are PH4-6, between 40-60 ℃, about 5-10 minute with the dipping or spray method carry out, must carry out next step in the short period of time after the drying;
(3) fluoroplast processing: with each in conjunction with the different floating state suspension liquid fluoroplast of number, be sprayed at the shrinkage pool surface that is attached with phosphate coating, make fluoroplast can be impregnated into each the inside, shrinkage pool trough slit of thickness inequality fully, strong adherence is in the epithelium surface;
(4) heating, drying moulding: after the fluoroplast drying, put into stove and heat, make particle dissolve mutually in conjunction with and setting and hardening form.
3, a kind of metal surface treating method is characterized in that: forms the shrinkage pool structure that uneven shape differs in the metallic surface, adheres to one deck phosphate coating in it, and adherence one deck fluoroplast on the phosphate coating.
4, metal surface treating method according to claim 1, it is characterized in that: sandblasting is with the powerful pressurized air of 5-15kg/cm, borrow nozzle ejection or take turns the powerful centrifugal force of air blast fin that runs up to fall, impact quick-fried penetrating, make it produce about 0.5-1.5m/m diameter, shrinkage pool that 30-80 μ m is dark is good in metallic surface.
5, according to claim 1 and 2 described metal surface treating methods, it is characterized in that: after phosphate coating was handled, it was good that generation has the phosphatization epithelium of 1-2.5g/m.
6, according to claim 1 and 2 described metal surface treating methods, it is characterized in that: the moulding of fluoroplast heating, drying be in stove earlier with 120 ℃ of left and right sides temperature after about 5 minutes, transfer to 300-450 ℃ of temperature 5-10 minute again for good.
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| CN 97120156 CN1222585A (en) | 1997-11-14 | 1997-11-14 | Metal surface treating method |
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| CN 97120156 CN1222585A (en) | 1997-11-14 | 1997-11-14 | Metal surface treating method |
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| CN1323191C (en) * | 1998-04-16 | 2007-06-27 | 日本巴卡莱近估股份有限公司 | Metal surface treatment method and metal structure unit with surface formed by using said method |
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