WO2009089699A1 - Composition anti-oxydante et anti-réduction pour des métaux fondus - Google Patents

Composition anti-oxydante et anti-réduction pour des métaux fondus Download PDF

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Publication number
WO2009089699A1
WO2009089699A1 PCT/CN2008/072372 CN2008072372W WO2009089699A1 WO 2009089699 A1 WO2009089699 A1 WO 2009089699A1 CN 2008072372 W CN2008072372 W CN 2008072372W WO 2009089699 A1 WO2009089699 A1 WO 2009089699A1
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WO
WIPO (PCT)
Prior art keywords
molten metal
parts
metal
liquid
oxidation
Prior art date
Application number
PCT/CN2008/072372
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English (en)
Chinese (zh)
Inventor
Yongnong Yan
Original Assignee
Shenzhen Kunqi Xinhua Technology Co., Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenzhen Kunqi Xinhua Technology Co., Ltd filed Critical Shenzhen Kunqi Xinhua Technology Co., Ltd
Publication of WO2009089699A1 publication Critical patent/WO2009089699A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material

Definitions

  • the present invention relates to an antioxidant reducing agent, and more particularly to a molten metal anti-oxidation reducing agent. Background technique
  • the oxide floats the well-carrying metal to the surface to form dross.
  • the scum As the scum is generated continuously, it floats out, causing more and more scum accumulation.
  • the layers are stacked and thicker and thicker. After a few hours, it affects the liquid surface flow, and even overflows, and the pollution is dangerous.
  • the resulting scum can not be properly involved in the process of fusion, and can only be salvaged and processed separately. After the scum is salvaged, the liquid level is not high enough, and even the production amount is not enough, and only new metal materials can be added and added.
  • the existing anti-oxidation treatment processes mainly include a reducing agent reduction method, a reduction machine treatment method, and a nitrogen-filling isolation protection method.
  • the method for increasing the reducing agent for reducing and anti-oxidation is widely used, and the commonly used reducing agents include reducing powder, reducing metal and viscous gelatinous reducing substance.
  • the reduction method using reducing powder is as follows: On the surface of molten metal liquid, the powdery substance is spread, and its deficiency or limitation is as follows: A: The use form is very inconvenient, because it is a powdery substance, it is very difficult to operate on the surface of a high-temperature molten metal. For a liquid surface with a large surface area, it is necessary to be careful not to be blanched by high temperature. Be careful, so it is extremely inconvenient to use.
  • the smoke is large.
  • the reducing powder is generally acid, alkali, and salt. After contact with the molten metal surface, it will react with other additives. After heating, the smoke is large, and the original ventilation device is not enough to discharge the wind.
  • reducing particles metal
  • a high-purity active material such as a reducing powder
  • the metal particles or metal segments
  • A It is expensive, and it can be known from the preparation form. Since the metal is melted, the active material is added, and the molding process is performed, the material cost and the processing cost are high.
  • the use method is not optimized enough. When used, it is proportionally put into the molten metal liquid to melt the metal particles, precipitate the reducing substances, and then reduce and prevent oxidation. It takes a long time for the melting to dissolve, and the active material is dissolved in the metal liquid, and it is not easy to diffuse quickly.
  • the method of using viscous colloidal reducing substances has been introduced by some foreign companies.
  • the working principle is that the active substance is added into the viscous liquid, and when it is used, it is poured into the surface of the molten metal, and after being fully stirred, it is diffused on the surface of the liquid to form a protective film, and the reduction is continued.
  • the limitations are in the following points:
  • the technical problem to be solved by the present invention is to provide a molten metal anti-oxidation reducing agent which can solve the problem of oxidation dross of molten metal very economically and conveniently.
  • a molten metal antioxidant reducing agent the main components thereof include: nonylphenol ethoxylate, cyclohexylamine hydrobromide, diphenylguanidine hydrobromide Salt, phosphoric acid, phytic acid.
  • each component wt% is as follows:
  • the invention is an oily liquid, which can be poured on the surface of the molten metal during use, and the invention adopts the tension diffusion technology to add the surface active material, and when the two liquids are in contact, the parent/semi-directional molecular bond is generated, and the melting is reduced.
  • the surface tension of the metal promotes the rapid and rapid diffusion of the anti-oxidation reducing liquid, while other existing products require mechanical force (stirring) or the like to cover the entire liquid surface; therefore, the antioxidant reducing agent of the present invention can be added at only a few points. Yes, the product will quickly spread and flow to the uncovered area, and the anti-oxidation reducing agent will spread the entire surface after 3 ⁇ 5 seconds. At the same time, because the product floats on the surface of the molten liquid, it will continue to function. The amount added is not required to be very precise, which is also convenient for work.
  • the nitrogen-filled isolation protection method can only prevent oxidation; the metal particles/reduced powder can only function as a reduction function, and the oxidation prevention function is not.
  • the present invention is liquid, lighter than molten metal liquid, and can cover the entire flowing liquid surface to block air (oxygen) and effectively prevent oxidation.
  • the present invention contains an active material and an organic or inorganic acid, which can disperse the internal gravity of the metal scum, actively break up the structure, and restore the useful metal back to the container.
  • the metal dross is reduced on the one hand, and the molten metal liquid is more fluid; on the other hand, the active material (surfactant) contained in the present invention can lower the surface tension of the liquid surface and increase the melting.
  • the fluidity and diffusibility of the metal thereby promoting the bonding or adhesion quality of the molten metal, so that the level of bonding or adhesion to be achieved in the process is greatly improved, which is a major feature of the present invention. This is also not available or the performance of other existing reducing agents or methods.
  • D low cost, cost-effective
  • the invention adopts a novel and inexpensive active ingredient, and the reduction efficiency is very high, about 95%, the cost of unit reduction metal is much lower than other methods. After calculation, it can save metal for 50% of the total use of the section, the economic benefits are very considerable, and the cost performance is very high.
  • the invention is processed by a new process, and can be poured into the surface of the molten metal, and the oxide which has been produced will be reduced and disappeared while being diffused after the invention is added, and the oxide which is subsequently produced is decomposed and reduced at any time, and the effect is obtained. It can be seen immediately and lasts for 4 to 5 hours.
  • the invention is an oily liquid, which is convenient to add and does not scatter. At the same time, its density is much lighter than that of the molten metal, and a protective film is formed on the surface of the molten metal, and the active ingredient is continuously effective and does not need to be repeatedly added.
  • the oxide is continuously reduced, the residual scum generated every day is very small. It has to be cleaned twice a day. It only needs to be cleaned up every day. Two to three days (normal class) can be cleared once. Moreover, the generated ash is a dry and loose material, and the residue is loose and brittle. The residue adhering to the equipment can be removed only by lightly, or after being soaked for 5 to 15 minutes with the company's special cleaning agent. Less slag, less cleaning, naturally keeps the environment clean, while optimizing operation and cleaning processes.
  • G It is widely used and can completely replace various reducing agents currently used, as well as a reducing machine method, a nitrogen-filling isolation protection method, etc., for various processes of melting one metal or alloy to bond or adhere to another metal. For example, it can be used for welding processes such as hand dip soldering, wave soldering (lead or lead-free). detailed description
  • the invention provides a molten metal anti-oxidation reducing agent, the main component thereof and the component thereof :as follows:
  • nonylphenol ethoxylate is used as an emulsifier, a wetting agent, a dispersing agent, a penetrating agent, a cleaning agent, a solubilizing agent, and the like;
  • Cyclohexylamine hydrobromide is an organic active agent, which belongs to organic halogens. It reduces surface tension, changes the surface physicochemical equilibrium conditions, and wets the solder and the metal to be welded. It can reduce the oxidized metal and enhance the welding ability.
  • Diphenylhydrazine hydrobromide is also an organic active agent. It belongs to organic halogens. It can reduce the surface tension, change the surface physicochemical equilibrium conditions, and wet the solder and the metal to be welded. It can reduce the metal oxide and enhance the welding ability.
  • Phosphoric acid is used as an organic reaction catalyst, refractory additive, activated carbon treatment agent, etc.; phytic acid as a chelating agent, antioxidant, metal anticorrosive and anticorrosive agent;
  • Fragrance is to produce a proper fragrance during use to improve the working environment.
  • the cyclohexylamine hydrobromide and the diphenylhydrazine hydrobromide are slowly melted, and the nonylphenol ethoxylate is slowly added and stirred for 3 to 5 minutes. After cooling to 60 ° C, add phosphoric acid and phytic acid slowly while stirring for 10 to 15 minutes.
  • the molten metal anti-oxidation reducing agent of the invention is a light yellow transparent oily liquid with a specific gravity of 1.07 ⁇ 0.05g/cm 3 and has a slight scent; it is stored in a plastic bottle (container) and placed in a dark place, in a cool place, at room temperature ( -5 ⁇ 40 degrees Celsius) can be stored for about 2 years. It has an operating temperature of 183 to 300 degrees Celsius, a flash point/flash point of 330 degrees, and a boiling point of 300 degrees.
  • the reducing agent of the invention is smokeless, tasteless and non-polluting, and the ventilation system under the original production conditions can be used without modification. Entry is extremely easy.
  • the physical form of the present invention is an oily liquid, which is different from the existing reducing agent.
  • the oily liquid is advantageous for operation during use, and is convenient for addition to a liquid molten metal; and also facilitates rapid flow diffusion on the surface of the liquid molten metal. When used, it is only necessary to directly pour the anti-oxidation reducing agent of the present invention to the liquid surface, and then it will rapidly diffuse by itself and spread the entire liquid surface.
  • the product When the product is added to the surface of the molten metal, it diffuses rapidly and spreads over the entire surface to form a protective film that blocks the contact of the molten metal with oxygen, thereby reducing the amount of oxidation.
  • the product When the product is added to the molten metal surface, the product will be saturated with the scum gap.
  • the product contains a diffusion/dispersing agent, which acts as a diffusion scum structure, reduces the structural tension, and causes the scum to disperse rapidly, rapidly changing from an irregular state. In a dispersed, thick liquid state, the useful metal is immediately reduced back to the liquid tank and continues to participate in the effective process.
  • the active ingredient (surfactant) in the present invention can change the surface tension of the molten metal, thereby improving the fluidity and bonding ability of the molten metal.
  • the reduction efficiency of the invention can reach 85% ⁇ 95%, and the combined adhesion fluidity can be increased by more than 20%, and the cost can be saved by 30 ⁇ 50%/segment.
  • the antioxidant reducing agent of the present invention can be used in the following manner:
  • the principle of the diversion method is as follows: Since the molten metal liquid continuously flows in the circulation, a large amount of oxide is generated. If the flow area is reduced, the amount of oxidation will be reduced, so that the reducing agent can also be used less. Therefore, the specific method of the diversion method is: Make 3 ⁇ 5 stainless steel baffles, about 3 ⁇ 5cm below the liquid level, and limit the flow of molten metal to a small area, so that most of the liquid surface is at rest. However, the liquid can be fully circulated below the liquid level, which does not affect the original operation mode of the whole process.
  • the principle of the collection method is as follows: The surface of the molten metal is only partially oxidized by flowing or rising, and the method of collecting and treating the scum directly in the molten metal surface can achieve a multiplier effect.
  • the main points of the collection method are: According to the container containing the molten metal, the screen is designed to be u-shaped, and the raised metal liquid can flow into the screen, and the scum cannot pass through the sieve hole and can be collected.
  • the molten metal can freely flow out from the sieve hole, and the edge of the container can be slightly higher than the liquid surface by 1 to 2 cm, and the reducing agent is added to be restored at any time. In this way, the scum does not drift to other places, and the entire liquid surface is substantially free of scum.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Anti-Oxidant Or Stabilizer Compositions (AREA)

Abstract

L'invention concerne une composition anti-oxydante et anti-réduction pour des métaux fondus, qui comprend essentiellement, en parties en poids, 51,19 à 91,19 parties d'éther nonylphénolique de polyoxyéthylène, 5 à 20 parties de bromhydrate de cyclohexylamine, 3 à 15 parties de bromhydrate de diphénylguanidine, 0,3 à 5 parties d'acide phosphorique, et 0,5 à 8 parties d'acide phytique. Elle peut en outre comprendre une quantité appropriée d'essence.
PCT/CN2008/072372 2008-01-14 2008-09-16 Composition anti-oxydante et anti-réduction pour des métaux fondus WO2009089699A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200810065190A CN100590227C (zh) 2008-01-14 2008-01-14 熔融金属抗氧化还原剂
CN200810065190.X 2008-01-14

Publications (1)

Publication Number Publication Date
WO2009089699A1 true WO2009089699A1 (fr) 2009-07-23

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CN (1) CN100590227C (fr)
WO (1) WO2009089699A1 (fr)

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Publication number Priority date Publication date Assignee Title
JP5784908B2 (ja) * 2008-01-14 2015-09-24 深▲セン▼市▲クン▼▲チー▼▲シン▼▲華▼股▲フン▼有限公司 溶融金属の抗酸化還元剤、その調製方法及び使用方法
CN100590227C (zh) * 2008-01-14 2010-02-17 深圳市堃琦鑫华科技有限公司 熔融金属抗氧化还原剂
WO2011022514A1 (fr) 2009-08-18 2011-02-24 Ms2 Technologies, Llc Outil permettant le retrait de scories de brasure doté d’un réservoir et d’un ascenseur ; procédé de traitement des scories de brasure au moyen dudit outil
CN101837272B (zh) * 2010-05-18 2012-09-26 深圳市堃琦鑫华科技有限公司 水溶性熔融金属抗氧化还原剂
CN101838787B (zh) * 2010-05-18 2012-03-14 深圳市堃琦鑫华科技有限公司 易降解的熔融金属抗氧化还原剂
CN102220550B (zh) * 2011-06-13 2012-07-04 苏州国通科技有限公司 一种锡熔液保护剂
CN102352446A (zh) * 2011-08-19 2012-02-15 帅鹏 一种锡或锡合金的抗氧化还原剂
CN103212761B (zh) 2012-06-26 2015-05-06 深圳市堃琦鑫华股份有限公司 一种焊接方法
CN107186389A (zh) * 2017-05-04 2017-09-22 深圳市堃琦鑫华股份有限公司 一种内置还原剂的金属丝及其制备方法、应用

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CN101049663A (zh) * 2007-05-09 2007-10-10 昆山成利焊锡制造有限公司 无铅软钎焊料丝用助焊剂及制备方法
CN101088695A (zh) * 2006-06-13 2007-12-19 深圳市合明科技有限公司 一种smt无铅锡膏用焊膏
CN101215712A (zh) * 2008-01-14 2008-07-09 深圳市堃琦鑫华科技有限公司 熔融金属抗氧化还原剂

Patent Citations (3)

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Publication number Priority date Publication date Assignee Title
CN101088695A (zh) * 2006-06-13 2007-12-19 深圳市合明科技有限公司 一种smt无铅锡膏用焊膏
CN101049663A (zh) * 2007-05-09 2007-10-10 昆山成利焊锡制造有限公司 无铅软钎焊料丝用助焊剂及制备方法
CN101215712A (zh) * 2008-01-14 2008-07-09 深圳市堃琦鑫华科技有限公司 熔融金属抗氧化还原剂

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