CN1632359A - Tin plated copper capillary and process for producing same - Google Patents
Tin plated copper capillary and process for producing same Download PDFInfo
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- CN1632359A CN1632359A CN 200410052326 CN200410052326A CN1632359A CN 1632359 A CN1632359 A CN 1632359A CN 200410052326 CN200410052326 CN 200410052326 CN 200410052326 A CN200410052326 A CN 200410052326A CN 1632359 A CN1632359 A CN 1632359A
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- zinc
- plated
- brass pipe
- capillary brass
- capillary
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Abstract
Tin plated copper capillary and process for producing same, comprising following steps: processing pretreatment of capillary brass pipe such as removing oil, washing, corrading and continuously tin plating in a groove, well controlling the concentration, temperature and time of respective step, unwinding from one end and winding at another end until tin plating finish. The high accuracy tin plating capillary with the production specification Phi 0.5-1mm(inner diameter)*1.6-3mm(outer diameter) and the common capillary brass pipe with the specification Phi 1-2mm*4-6mm are produced. The tin plating capillary brass pipe has a good corrosion, cold, heat resistance and darkness prevention and the coating has a good weldability, adherence. The invention is widely applied in the advanced temperature controller and precision instruments.
Description
The invention belongs to fine metal and electroplate, be applied to refrigeration industry and precision instrument instrument.
Capillary brass pipe is the critical piece temp controller of the necessary raw material of extensive use in modern household electrical equipment, instrument, the instrument, particularly refrigerator refrigerator, air-conditioning, car air conditioner, uses capillary brass pipe in a large number.Because the easy oxidation of naked copper, contaminated food products influences health of people easily, and influences the sensitivity and the serviceability of temp controller, and advanced now temp controller and other precision instrument instruments generally adopt zinc-plated capillary brass pipe or silver-plated capillary brass pipe.
Capillary brass pipe is zinc-plated, and prior art is the electro-plating method with reference to metal, with the capillary brass pipe cuttolength, it is zinc-plated to go into the groove oil removing after two is blocked, and the shortcoming of this production method is that the product uneven coating is even, the quality instability, do not reach the requirement of advanced temp controller, must excise two after simultaneously zinc-plated, waste material, yield rate is low, the cost height, and this method is discontinuous production, and copper pipe pretreatment and zinc-plated disconnection can't be satisfied the needs of tinuous production.It is to finish continuously in the straight line pot that the present invention produces zinc-plated capillary brass pipe, pretreatment such as the oil removing of naked copper pipe, washing, erosion and zinc-platedly carry out continuously, need not cut off copper pipe, the every volume of producing of coil pipe can reach tens of kilograms, can many copper pipes simultaneously zinc-plated, changed and be interrupted the even phenomenon of the zinc-plated uneven coating that causes, yield rate height, output height, cost are low.Production specification (internal diameter * external diameter) is the zinc-plated capillary tube of highi degree of accuracy of ￠ 0.5-1.5mm * ￠ 1.6-3mm, and specification is the zinc-plated capillary brass pipe of vague generalization of ￠ 1-2mm * ￠ 4-6mm.
The zinc-plated rear surface of capillary brass pipe light is silvery white in color, the coating crystallization is trickle, even, interior external diameter is even, internal surface is smooth, has satisfied the needs that the user produces advanced temp controller.
Main key technology and flow process that the present invention adopts are as follows:
Unreel---oil removing---washing---erosion---washing---electrotinning---washing---passivation---washing---Hot Wash---oven dry---rolling.
1, oil removing
Oil removing is to electroplate pretreated important procedure, is the committed step that obtains good binding force of cladding material, in order to adapt to the requirement of continuous electroplating, must finish this operation in the short as far as possible time.We adopt the electrochemical degreasing method, and add an amount of additive, make the greasy dirt of capillary brass pipe can remove clean in 30 seconds.Facts have proved that the negative electrode oil removing of short time can thoroughly eliminate residual greasy dirt again both without detriment to surface finishment, and make as thin as a wafer that the rear oxidation film is reduced that it is the important means that obtains good binding force of cladding material.
2, washing
Remove impurity, the clean surface is beneficial to plating.
3, corrode
Erosion is to electroplate pretreated master operation, and it can remove oxide and corrosion thing on the metal surface, makes surface cleaning, the adhesive strength of raising and coating, and we adopt sulfuric acid pickling solution in order not pollute plating bath.
4, electrodeposited coating
Zinc-plated have hot dip and electroplate two kinds, and we adopt more advanced electrotinning method, with the efficient low-consume of all even production of guaranteeing coating.
Tin bath solution comprises acid and alkalescence two big classes.In order to adapt to the needs of continuous electroplating, adopted wide temperature, sulphate that concentration is moderate zinc-plated, its current efficiency height, deposition rate is fast, and the coating light is careful, and need not heat winter, and need not lower the temperature summer, the plating bath long-term stability.
Can sulfate liquor plate out the tin coating key of qualified full light except the sulphate tin plating electrolyte, also is the selection and the use of electroplating additive.The additive of electrotinning mainly comprises brightening agent, stabilizer, dispersing agent and primer.We select the good FB of performance, HA, X206, FS-1 and OP series additive.
5, passivation
Purpose is to improve anti-oxidant, the anti-variable color ability of product.
6, Hot Wash
Clean surface more, and useful to surface-brightening, also can improve coating stability.
Through after the comprehensive process treating, the capillary brass pipe that plates out has following characteristics:
1, trickle, even, the light of coating crystallization is silvery white in color.
2, good corrosion resistance and prevent the performance of deepening is arranged.
3, coating has good weldability.
4, it is constant that the chemical property of copper pipe, physical property still keep the preceding performance of original not plating.
5, have corrosion-resistant, cold-resistant, heat resistance after zinc-plated, the adhesive quality of coating is also fine.
Performance index and quality standard: tin coating is even, thickness 1.5 μ-8.0 μ, and can pass through the sulfate method continuity test, visual no detin phenomenon under high temperature (300 ℃ 2 hours) low temperature (35 ℃ 24 hours) condition; Tin coating is corrosion-resistant, sprays 24 hours visual no obvious staining continuously with dense NaCl solution; Tin-plated copper tubes is through alternating bending test, and visual coating does not have obscission; Tin-plated copper tubes tensile strength is greater than 205Mpa, and specific elongation is greater than 35%.
Claims (6)
1, zinc-plated capillary brass pipe and production technology thereof is characterized in that capillary brass pipe from pretreatment such as oil removing, washing, erosions and zinc-platedly finish continuously in the straight line pot.
2, according to claim 1, it is characterized in that: capillary brass pipe is from unreeling the zinc-plated rolling of finishing, and the every volume of zinc-plated capillary brass pipe of production can reach tens of kilograms, and is can many copper pipes simultaneously zinc-plated.
3, zinc-plated capillary brass pipe according to claim 1 is characterized in that: specification is the zinc-plated capillary tube of ￠ 0.5-2mm (internal diameter) * ￠ 1.6-6mm (external diameter).
4, zinc-plated capillary brass pipe according to claim 1 is characterized in that: adopt the electrochemical degreasing method to remove naked copper tube-surface greasy dirt.
5, zinc-plated capillary brass pipe according to claim 1 is characterized in that: the tin coating thickness of zinc-plated capillary brass pipe is 1.5 μ-8.0 μ.
6, zinc-plated capillary brass pipe according to claim 1, it is characterized in that: the chemical property of copper pipe, physical property still keep the performance before the original not plating constant, and have good anticorrosive, cold-resistant, heat-resisting and prevent the performance of deepening, coating has good weldability, adhesive quality also fine, surface-brightening is silvery white in color, the coating crystallization is trickle, even, and interior external diameter is even, internal surface is smooth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410052326 CN1632359A (en) | 2004-11-23 | 2004-11-23 | Tin plated copper capillary and process for producing same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410052326 CN1632359A (en) | 2004-11-23 | 2004-11-23 | Tin plated copper capillary and process for producing same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1632359A true CN1632359A (en) | 2005-06-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410052326 Pending CN1632359A (en) | 2004-11-23 | 2004-11-23 | Tin plated copper capillary and process for producing same |
Country Status (1)
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| CN (1) | CN1632359A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101593823B (en) * | 2009-05-31 | 2010-12-29 | 广东猛狮电源科技股份有限公司 | Method for pretreating copper insert of copper-insert terminal of lead-acid storage battery before casting |
| CN102476760A (en) * | 2010-11-30 | 2012-05-30 | 富科-思邦太阳能技术（太仓）有限公司 | Rolling equipment and method for solar photovoltaic welding strip tinning machine |
| CN104896812A (en) * | 2015-05-20 | 2015-09-09 | 浙江博威汽车空调有限公司 | Capillary tube and machining method thereof |
| CN105401177A (en) * | 2015-12-14 | 2016-03-16 | 广东美的暖通设备有限公司 | Anti-corrosion treatment method for heat exchanger, heat exchanger and air conditioner |
| CN106641485A (en) * | 2016-12-16 | 2017-05-10 | 上海裕生特种线材有限公司 | Special capillary tube for refrigerating equipment and manufacturing method of special capillary tube |
| CN112033198A (en) * | 2020-08-26 | 2020-12-04 | 西安交通大学 | Gallium-based liquid metal high-speed flowing capillary copper pipe capable of containing oxidation layer and preparation method thereof |
| CN113106513A (en) * | 2021-03-18 | 2021-07-13 | 中科金龙金属材料开发有限公司 | Corrosion-resistant copper pipe and processing method thereof |
-
2004
- 2004-11-23 CN CN 200410052326 patent/CN1632359A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101593823B (en) * | 2009-05-31 | 2010-12-29 | 广东猛狮电源科技股份有限公司 | Method for pretreating copper insert of copper-insert terminal of lead-acid storage battery before casting |
| CN102476760A (en) * | 2010-11-30 | 2012-05-30 | 富科-思邦太阳能技术（太仓）有限公司 | Rolling equipment and method for solar photovoltaic welding strip tinning machine |
| CN102476760B (en) * | 2010-11-30 | 2013-06-19 | 富科-思邦太阳能技术（太仓）有限公司 | Rolling equipment and method for solar photovoltaic welding strip tinning machine |
| CN104896812A (en) * | 2015-05-20 | 2015-09-09 | 浙江博威汽车空调有限公司 | Capillary tube and machining method thereof |
| CN105401177A (en) * | 2015-12-14 | 2016-03-16 | 广东美的暖通设备有限公司 | Anti-corrosion treatment method for heat exchanger, heat exchanger and air conditioner |
| CN106641485A (en) * | 2016-12-16 | 2017-05-10 | 上海裕生特种线材有限公司 | Special capillary tube for refrigerating equipment and manufacturing method of special capillary tube |
| CN112197073A (en) * | 2016-12-16 | 2021-01-08 | 上海裕生特种线材有限公司 | Special capillary pipeline for refrigeration equipment |
| CN112197073B (en) * | 2016-12-16 | 2021-11-16 | 上海裕生特种线材有限公司 | Special capillary pipeline for refrigeration equipment |
| CN112033198A (en) * | 2020-08-26 | 2020-12-04 | 西安交通大学 | Gallium-based liquid metal high-speed flowing capillary copper pipe capable of containing oxidation layer and preparation method thereof |
| CN112033198B (en) * | 2020-08-26 | 2021-07-13 | 西安交通大学 | Gallium-based liquid metal high-speed flowing capillary copper pipe capable of containing oxidation layer and preparation method thereof |
| CN113106513A (en) * | 2021-03-18 | 2021-07-13 | 中科金龙金属材料开发有限公司 | Corrosion-resistant copper pipe and processing method thereof |
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