CN102285167B - Process method for galvanizing rubber metal part - Google Patents
Process method for galvanizing rubber metal part Download PDFInfo
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- CN102285167B CN102285167B CN 201110179300 CN201110179300A CN102285167B CN 102285167 B CN102285167 B CN 102285167B CN 201110179300 CN201110179300 CN 201110179300 CN 201110179300 A CN201110179300 A CN 201110179300A CN 102285167 B CN102285167 B CN 102285167B
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Abstract
The invention provides a process method for galvanizing a rubber metal part. In the method, a metal part is galvanized, and is vulcanized with rubber, and a finished rubber metal part is repaired and passivated. The method comprises the following process steps: galvanizing the metal part, performing gluing preprocessing, gluing, vulcanizing, performing zinc layer surface treatment, washing with water, and passivating. The process can effectively solve the problem that the vulcanized rubber metal part is integrally delaminated, and the appearance quality of a galvanizing coat is ensured.
Description
Technical field
The present invention relates to a kind of surfacecti proteon treatment process of rubber-metal composite article, particularly a kind of zincincation of rubber metal parts.
Background technology
Along with track traffic and fast development of modern industry, having prepared widely of rubber metal parts composite article used.In use, owing to be subjected to the influence of external environments such as high temperature, sunlight, acid-alkali medium for a long time, exposed metal skeleton surface is very easy to get rusty and corroded, and therefore must carry out protective treatment to the rubber metal parts composite article.Owing to metal and elastic polymer material particularly the surface wettability of nonpolar elastomeric material and surface free energy differ greatly and be difficult to bonding firmly, so metallic surface is handled the key that has just become to influence the adhesive property quality.At present, the zinc-plated process of known rubber metal parts is: the pre-treatment of metalwork gluing, gluing, sulfuration, zinc-plated, passivation, the weak point of this technology are to come unglued after causing product zinc-plated, and metal and rubber adhesion are not firm.
Summary of the invention
The objective of the invention is to overcome the shortcoming of prior art, a kind of zinc-plated process of rubber metal parts afterwards of improving is provided, zinc-plated back the sulfuration again with rubber of metalwork repaired passivation to the rubber metal parts finished product, utilize this method can solve the whole zinc-plated problem of coming unglued in rubber metal parts sulfuration back effectively, and the presentation quality of protecting positive zinc coat.
The present invention realizes as follows: a kind of zincincation method of rubber metal parts comprises following processing step at least:
1), metalwork is zinc-plated: metalwork is undertaken zinc-plated by the middle upper limit of each specific product galvanized layer thickness requirement, metalwork galvanized layer thickness h is (the highest one-tenth-value thickness 1/10+minimum one-tenth-value thickness 1/10)/2≤h≤the highest one-tenth-value thickness 1/10, for example: it is 12～24um that the product zinc coating thickness requires, and then selects 18um≤h≤24um.The bright dipping of the zinc-plated back of metalwork but not passivation, the metal surface need be uniform silvery white gloss after the bright dipping; The metalwork hot strength requires to do dehydrogenation greater than the need of 500MP and handles, and processing mode is for to be incubated 3～4h with metalwork after the bright dipping under 200～230 ℃ of conditions; Metalwork need prevent chemical substances pollutions such as dust, greasy dirt, soda acid after bright dipping and the dehydrogenation; Dehydrogenation is nonessential step, decides on the product specific requirement.
2) gluing pre-treatment: metalwork directly carries out sandblast, and sandblast need be used the 36# white fused alumina with abrasive material.Need during sandblast non-gluing zone, metalwork surface zinc layer is protected.Protected mode for thickness greater than 2mm, 30～55 ° of shore hardness A(SHA of hardness) rubber sleeve entangle non-gluing position or with autocratic metal frock non-gluing position surrounded protection; It is residual that the sandblast area surfaces needs foreign material such as free from dust after the sandblast, color and luster, roughness uniformity;
3) gluing: need zone (being the zone of sandblast, the front) adhesive coating of adhesive rubber in the metal surface, coating method requires to determine according to the concrete adhesive that uses, can be by adhesive production firm furnish an explanation book or technological guidance;
4) sulfuration: sulfuration comprises metalwork dress mould, pressure-maintaining and heat-preservation, depanning and deburring; Cure time, temperature, pressure adopt known parameter in the industry, specifically decide according to product.Need prevent that in sulfidation the zinc layer from damaging, preventing that foreign material such as greasy dirt from remaining in the zinc laminar surface.
5) the zinc laminar surface is handled: the residual dirt of zinc laminar surface is removed (4-6min) with ultrasonic wave in neutral degreaser, can polish gently with No. 400 sand paper for adhesive residue and remove.Surface film oxide soaks about 5-10S with 3-5% salpeter solution to be removed.
6) washing: metal surface, washing back moisture film needs evenly continuously, no-sundries adheres to or residual;
7) passivation.
The too much workpiece of polishing need carry out the zinc coat repairing if the damage of zinc layer seriously or the adhesive revolution mark is excessive after the step 4), to guarantee that the breakage zinc coating thickness is 4-6um.The zinc layer is repaired the back workpiece and is carried out follow-up washing, bright dipping operation by normal process.
Rubber of the present invention and metalwork energy strong bonded, the metalwork smooth surface, outward appearance zinc layer is intact, does not come unglued; This technology is used at product more than 15 kinds, use after this technology except individual product because of vulcanisation operation cause zinc layer well damage do over again zinc-plated bonding not firm no zinc-plated bonding not firm phenomenon, wherein multiple product is produced by normal generally acknowledged technology (pre-treatment of metalwork gluing, gluing, sulfuration, zinc-plated, passivation), the ratio 23.34～87.4% of coming unglued after zinc-plated, in the ratio 12/8995=0.13% that comes unglued after this explained hereafter, qualification rate reaches 99.87%.
Description of drawings
Fig. 1 is process flow diagram of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing and the specific embodiment the present invention is done and to describe in further detail.
A kind of zincincation method of rubber metal parts comprises following processing step at least:
1) metalwork is zinc-plated: the zinc-plated requirement of metalwork is undertaken zinc-plated by the middle upper limit of product galvanized layer thickness requirement, metalwork galvanized layer thickness h is (the highest one-tenth-value thickness 1/10+minimum one-tenth-value thickness 1/10)/2≤h≤the highest one-tenth-value thickness 1/10, the bright dipping of the zinc-plated back of metalwork but not passivation, the metalwork surface zinc layer of zinc-plated back bright dipping should be silvery white bright looks uniformly.Zinc coat requires adhesive force good, and bubbling comes off waits unusually otherwise be prone in follow-up dehydrogenation or the sulfidation.The metalwork requirement of strength is handled greater than the dehydrogenation of need doing after zinc-plated bright dipping of 500MP, and specific practice is that metalwork after the zinc-plated bright dipping is incubated 3～4h under 200～230 ℃ of conditions.
2) metalwork gluing pre-treatment: the metalwork after zinc-plated does not need degreasing directly to carry out sandblast, and sandblast need be used the 36# white fused alumina with abrasive material, needs during sandblast the institute's non-gluing of metalwork position zinc layer is protected, and entangles non-gluing position with rubber sleeve.The sulfuration pre-treatment need reduce residual on the zinc layer of the damage of zinc layer and foreign material as far as possible.
3) gluing: gluing refers to sandblast zone in the zone (step 2) of metal surface need adhesive rubber, brushes or adhesive for spraying.The specification that the concrete using method of adhesive can provide with reference to manufacturer or allow it that technological guidance is provided.
4) sulfuration: sulfidation comprises metalwork dress mould, heat-insulation pressure keeping, depanning, deburring.Curing parameter can be adjusted according to specific product, adopts the interior known parameter of industry to get final product.Need prevent in the sulfidation that the zinc layer from damaging, preventing that foreign material such as greasy dirt from remaining in the zinc laminar surface.
5) the zinc laminar surface is handled: the residual dirt of zinc laminar surface is removed (4-6min) with ultrasonic wave in neutral degreaser, can polish gently with No. 400 sand paper for adhesive residue and remove; Remove about the salpeter solution immersion 5-10S of surface film oxide with 3-5%.Damage the excessive and too much workpiece of polishing of more serious workpiece or adhesive revolution mark for the zinc layer and need carry out zinc coat and repair, to guarantee breakage certain zinc coating thickness (get final product about general 5um) is arranged, suggestion employing acid zinc plating 10～20min.The zinc layer is repaired the back workpiece and is carried out follow-up washing, bright dipping operation by normal process.
6) washing: the moisture film of metal surface needs evenly continuously after the washing, otherwise needs repeating step 5) middle oil removal treatment; Metal surface zinc layer need be complete good after washing, otherwise need repeating step 5) middle zinc coat repairing processing.
7) passivation;
Be come unglued after the zinc-plated contrast of ratio of the embodiment of described rubber metal parts zincincation and conventional process flow below.
Comparative Examples:
Produce 1500 of band overcoat ball pivots, concrete technological process is: the pre-treatment of metalwork gluing, gluing, sulfuration, zinc-plated, passivation.Occur coming unglued 352, the ratio of coming unglued is 23.46%.
Embodiment:
Produce 6534 of band overcoat ball pivots, concrete technological process is: metalwork zinc-plated (not carrying out passivation), the pre-treatment of metalwork gluing, gluing, sulfuration, the processing of zinc laminar surface, washing, passivation.5 of the products (these 5 product zinc layer many places major injuries are removed behind the zinc layer of metalwork surface again and come unglued after zinc-plated) that come unglued, qualification rate 99.92%, zinc layer presentation quality is good.
Claims (6)
1. the zincincation method of a rubber metal parts is characterized in that: comprise following processing step at least:
1), metalwork is zinc-plated: metalwork is undertaken zinc-plated by the middle upper limit of each specific product galvanized layer thickness requirement, metalwork galvanized layer thickness h scope is: (the highest one-tenth-value thickness 1/10+minimum one-tenth-value thickness 1/10)/2≤h≤the highest one-tenth-value thickness 1/10;
2) gluing pre-treatment: directly carry out sandblast after metalwork is zinc-plated, need during sandblast the zinc coat at non-gluing position is protected;
3) gluing: need the zone of adhesive rubber to brush or adhesive for spraying in the metal surface;
4) sulfuration: sulfidation comprises metalwork dress mould, heat-insulation pressure keeping, depanning, deburring, and the temperature of sulfuration, pressure, time are all according to known parameter in the industry;
5) the zinc laminar surface is handled: the residual dirt of zinc laminar surface is removed 4-6min with ultrasonic wave in neutral degreaser, can polish gently with No. 400 sand paper for adhesive residue and remove, and surface film oxide is removed with salpeter solution immersion 5-10S of 3-5%;
6) washing;
7) passivation.
2. according to the zincincation method of the described a kind of rubber metal parts of claim 1, it is characterized in that described step 1) after, need dehydrogenation as the zinc-plated back of metalwork requirement of strength greater than 500MP, dehydrogenating process is for to be incubated 3～4h under 200～230 ℃ of conditions.
3. according to the zincincation method of the described a kind of rubber metal parts of claim 1, it is characterized in that described step 2) zinc-plated after not passivation.
4. according to the zincincation method of the described a kind of rubber metal parts of claim 1, it is characterized in that described step 2) the sandblast abrasive material is the 36# white fused alumina.
5. according to the zincincation method of the described a kind of rubber metal parts of claim 1; it is characterized in that described step 2) in to be used thickness to the protection of non-gluing part hide the position that does not need adhesive rubber greater than soft rubber cover or the autocratic metal frock of 2mm, non-gluing position do not need to refer to the zone with rubber adhesion.
6. according to the zincincation method of the described a kind of rubber metal parts of claim 1, the too much workpiece of polishing need carry out zinc coat and repairs if it is characterized in that after the described step 4) that the zinc layer damages serious or the adhesive revolution mark is excessive, to guarantee that the breakage zinc coating thickness is 4-6um; The zinc layer is repaired the back workpiece and is carried out follow-up washing, bright dipping operation by normal process.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110179300 CN102285167B (en) | 2011-06-29 | 2011-06-29 | Process method for galvanizing rubber metal part |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110179300 CN102285167B (en) | 2011-06-29 | 2011-06-29 | Process method for galvanizing rubber metal part |
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| CN102285167A CN102285167A (en) | 2011-12-21 |
| CN102285167B true CN102285167B (en) | 2013-08-07 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102581998B (en) * | 2012-02-29 | 2014-07-30 | 株洲时代新材料科技股份有限公司 | High-temperature short vulcanization process for transverse rubber backstop |
| CN103272752A (en) * | 2013-06-06 | 2013-09-04 | 国家电网公司 | Field patching method after damage of zinc coating of in-service power transmission tower |
| CN106003705A (en) * | 2016-05-26 | 2016-10-12 | 宁波拓普集团股份有限公司 | Bonding method for metal workpiece with electroplated zinc-nickel alloy layer and rubber |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4505971A (en) * | 1983-06-23 | 1985-03-19 | Ted Martin, Jr. | Fluoroplastic and metal laminate having rubber compound bonded layers |
| JP4433109B2 (en) * | 1999-08-06 | 2010-03-17 | Ｎｏｋ株式会社 | Surface treatment method for metal parts |
| CN101678643A (en) * | 2007-03-27 | 2010-03-24 | Nok株式会社 | rubber metal laminate |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001056719A1 (en) * | 2000-02-01 | 2001-08-09 | Nok Corporation | Metal part, and surface treating method therefor |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4505971A (en) * | 1983-06-23 | 1985-03-19 | Ted Martin, Jr. | Fluoroplastic and metal laminate having rubber compound bonded layers |
| JP4433109B2 (en) * | 1999-08-06 | 2010-03-17 | Ｎｏｋ株式会社 | Surface treatment method for metal parts |
| CN101678643A (en) * | 2007-03-27 | 2010-03-24 | Nok株式会社 | rubber metal laminate |
Non-Patent Citations (1)
| Title |
|---|
| JP特许第4433109号B2 2010.03.17 |
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