JP4479044B2 - Oxide separating agent, method for producing the same, and method for separating oxide - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a separating agent, a separation method, a separation method, and a separating agent that can separate oxides attached to solder or oxides in contact with molten solder into solders and oxides (dross) and only the oxides can be taken out. It relates to a manufacturing method.
[0002]
[Prior art]
A large amount of solder oxide is generated in the dip and flow soldering processes. Further, when the solder oxide is scooped up from the molten solder or flows out of the solder bath and solidified, a large amount of solder adheres to the oxide.
The solder-attached oxide (solder dross) is sold to a remanufacturer at a low price.
To prevent solder oxidation, add an antioxidant to the surface of the molten solder or enclose an inert gas such as nitrogen around the solder bath to lower the oxygen concentration and minimize solder oxidation. It was.
[0003]
In addition, as a solder oxide separating / reducing agent that separates solder and oxide from the solder-attached oxide and enables only the oxide to be taken out, a powder in which potassium salt is added to ammonium borate is commercially available. ing. (Product name / Clinox OR-904P / Electrobart Setec Co., Ltd.)
[0004]
[Problems to be solved by the invention]
However, in the method of selling to the above-mentioned conventional remanufacturer, a large amount of expensive solder adheres to the oxide, resulting in a large solder loss.
In the method of adding an antioxidant to the surface of the molten solder, the solder bath is made of mineral antioxidant oil or the like, and it becomes difficult to clean the dirt and adheres to the printed wiring board.
The method using an inert gas increases the cost and makes the equipment large and complicated.
Powder separation agent based on ammonium borohydride is expensive at approximately 6,000 yen / 450 grams, and it is necessary to be careful not to touch the skin when handling or to wear safety glasses. Cost.
[0005]
It is another object of the present invention to further enhance the action and effect of the separating agent previously proposed in Japanese Patent Application No. 10-046944.
[0006]
[Means for Solving the Problems]
In order to solve the above problems, an oxide separating agent in the present invention,
A grain of cereals with a very thin coating of edible oil such as vegetable oil on the surface and dried on the surface of sun, etc. A grain of beans with a very thin coating of edible oil such as vegetable oil on the surface and dried on the surface of sun, etc. Seed grains with a very thin coating of edible oil such as vegetable oil on the surface and dried on the surface of the sun, etc. of peanut shells coated with a very thin layer of edible oil such as vegetable oil on the surface and dried on the surface of the sun, etc. It was made into the oxide separation agent which contact | connects the oxide to which the solder adhere | attached or the molten solder characterized by consisting of any one selected from the inside of a grain, or its combination.
[0007]
The cereal is any one of cocoon, rice bran, acne, rice, or a combination thereof, the beans are any one of soybeans, red beans, peanuts, coconuts, or a combination thereof, the seeds are sesame, sunflower, palm, rapeseed , Any one of cotton seeds, or a combination thereof. Furthermore, when the particle | grains of the said separating agent were large, it grind | pulverized suitably and made the magnitude | size into the granule of 5 mm or less in external shape. Preferably, grains having an outer diameter of 1 to 3 mm are good. Easily enters the gaps in the solder oxide and effectively exhibits the separation function.
Seeds such as persimmons, persimmons, acne and sesame seeds are about 1 to 3 mm in size in the natural state. This size tends to enter the gaps in the solder oxide. Also, the oil component is exuded by being instantaneously heated by the molten solder.
[0008]
The edible oil applied to the separating agent was a vegetable oil such as olive, sesame, sunflower, palm, rapeseed, cottonseed, corn, rice, safflower, or a combination thereof. The vegetable oil is 100% lipid.
[0009]
In the method for producing a separating agent in the present invention, grains of grains, beans, seeds in a bottomed container heated to 50 to 250 ° C. (in a state where a gas stove is lit and a frying pan is applied for about 1 to 2 minutes) Add about 50g to 100g of any one selected from the grains of peanut shells, then cover with half a teaspoon of edible oil, cover and heat for 1 to several minutes with stirring. A structure in which the particles in the bottomed container are sprayed on the water absorbent member, and the oil dripping below the particles is adsorbed on the water absorbent member, and then the surface of the particles is dried by sunlight or the like. did. As the drying method, natural drying (room temperature drying), oven drying, or the like may be arbitrarily performed in addition to the sun.
Drying the surface of the grain makes it easier to handle the grain and makes it easier to supply (spray) with a spoon or vibrating bowl.
The film thickness of the edible oil applied to the grains is in the range of about 0.001 μm to several μm.
[0010]
In another manufacturing method of the separating agent according to the present invention, about 50 to 100 g of sesame grains are put in a bottomed container heated to 50 to 250 ° C., and then the lid is covered with about half to one teaspoon of edible oil. The sesame grains are boiled and fried while stirring to the extent that the sesame seeds are about doubled, and then the sesame grains in the bottomed container are sprayed on the water-absorbing member and dripped below the grains. After adsorbing the sesame, the surface of the sesame was dried by the sun.
[0011]
Furthermore, in another method for producing a separating agent according to the present invention, the edible oil is sprinkled in a bottomed container heated to 50 to 250 ° C. and sprinkled with about half to one teaspoon. 50g to 100g of any one selected from grains, seed grains, and peanut shell grains are put into a lid, heated with stirring for 1 minute to several minutes, and then in the bottomed container The particles were sprayed on the water-absorbing member, the oil dripping below the particles was adsorbed on the water-absorbing member, and then the surface of the particles was dried in the sun.
[0012]
Furthermore, in another manufacturing method of the separating agent according to the present invention, the edible oil is sprinkled into a bottomed container heated to 50 to 250 ° C. and sprinkled with about half a teaspoon, and then oiled, and then 50 g of sesame grains are added. Add about 100g, cover, fry the sesame grains, stir to the extent that it swells to about twice, then sprinkle the sesame grains in the bottomed container on the water absorbent member After adsorbing the oil dripping down, the surface of sesame was dried in the sun. The water absorbing member was a sheet-like paper (for example, newspaper).
[0013]
Next, the method of separating the solder and oxide includes the step of introducing the oxide with solder adhered into the container, and the container is immersed in a molten solder bath (about 280 ° C. to 290 ° C.) to adhere the solder Oxidation where solder is attached to any one of the above-mentioned separating agents (for example, sesame with edible oil applied thinly on the surface and dried on the sun) or a combination thereof The method for separating oxides to which solder is attached is characterized by comprising a step of spraying on an object and a step of lifting the container from the solder bath and separating the solder and the oxide. Furthermore, after spraying the separating agent, a process of pulling up or immersing the container from the solder bath or moving it up and down a plurality of times was added as necessary.
[0014]
In addition, as another separation method, a step of introducing an oxide having solder adhered into a container, and one of the above separating agents (for example, sesame coated with edible oil on the surface) or a combination thereof is soldered. The step of spraying on the oxide to which the metal has adhered, the step of immersing the container in a molten solder bath to dissolve the oxide to which the solder has adhered, and pulling up the container from the solder bath to separate the solder and the oxide And a process for separating the oxide to which the solder is attached.
[0015]
Furthermore, another separation method includes a step of immersing the container in a molten solder tank about half, a step of introducing an oxide with solder attached in the container, and one of the separating agents (for example, , Sesame edible oil thinly applied to the surface) or a combination thereof is sprayed on the oxide to which the solder adheres, and after the oxide to which the solder adheres is dissolved, the container is lifted from the solder bath, And a step of separating the oxide.
[0016]
Furthermore, another separation method includes the step of scooping the oxide floating in the molten solder into the container, and any one of the above separating agents (for example, sesame coated with edible oil on the surface) or a combination thereof. A method for separating oxide in contact with molten solder, comprising a step of spraying on the oxide and a step of lifting the container from the solder bath and separating the solder and the oxide.
[0017]
Further, another separation method includes a step of spraying any one of the above separating agents (for example, sesame having a thin edible oil applied to the surface) or a combination thereof on the oxide floating on the molten solder, A method for separating an oxide in contact with molten solder, comprising: a step of scooping a solder oxide floating in a solder into a container; and a step of pulling the container out of a solder bath and separating the solder and the oxide It was.
[0018]
Furthermore, a container for scooping up the oxide floating on the molten solder has a mesh opening (through hole) area of about 1-10 mm ↑ 2, preferably about 1-2.25 mm ↑ 2, or an area of 1-1 The punching metal is formed by pressing so that a plurality of openings of about 2.25 mm ↑ 2 are provided on the bottom surface and each side surface.
One opening area in the mesh or the punching metal was determined by experiments for the purpose of allowing the solder separated from the oxide to smoothly flow back into the solder melting tank and for the oxide soot (oxide) to remain in the container.
Further, the components such as a mesh cage and punching metal are made of a material that does not adhere solder, such as stainless steel.
The mesh cage has a mesh wire diameter of 0.3 to 0.7 mm and a side dimension of the rectangular opening of about 1.0 to 3 mm. Preferably, the wire diameter of the net is about 0.5 mm, and one side of the rectangular opening dimension is about 1.2 mm.
[0019]
The mechanism by which each separating agent separates the oxide to which the solder is attached or the oxide in contact (floating) with the molten solder into solder and oxide is as follows. That is,
It is considered that the oil component (the organic acid R · (COOH) n component contained in the oil (that is, oleic acid, linoleic acid, palmitic acid, etc.) constituting the separating agent exhibits a reducing action on the metal oxide.
For example, SnO ↓ 2 + 4RCOOH → [RCOO] ↓ 4Sn + 2H ↓ 2O
Further, it is considered that phosphorus (P) and the oil / fat contained in the separating agent fulfill the function of preventing oxidation of the solder.
Furthermore, it is considered that fibers, carbohydrates, and the like constituting the separating agent are combined with oxide (dross) and inhibit the bonding with the molten solder.
It is considered that the component heated to molten carbon and converted into carbon C reacts with SnO ↓ 2 + C → Sn + CO ↓ 2. (Acts as a reducing agent.)
Furthermore, when sodium (Na) is contained in the separating agent, Na also acts as a reducing agent.
[0020]
The particle size distribution of each separating agent having an outer shape of about 1 to 5 mm need not be prepared. In the case of a large seed (seed) having an outer shape exceeding 5 mm, it may be used as it is, but it is desirable to use it by crushing it into granules of about 1 to 5 mm if possible.
[0021]
By the way, if you describe each component of cereals, rice cake, acne, rice cake,
Persimmon is in 100g edible portion, fat 7.0g, phosphorus P 240mg, sodium Na 7mg, calcium Ca 21mg, iron 5mg, protein 9.9g (other ingredients listed) Are omitted).
Acne is 100g edible fat, 9.1g, phosphorus P, 270mg, sodium Na, trace amount, calcium Ca, 20mg, iron, 3.5mg, protein, 12.7g (others) Are omitted).
Persimmons in 100g edible portion, fat ... 8.3g, phosphorus P ... 330mg, sodium Na ... trace amount, calcium Ca ... 33mg, iron ... 3.5mg, protein ... 9.3g (others Are omitted).
[0022]
Of the beans,
Ingredients for soy are 100g edible fat, 17.5g fat, 470mg phosphorous, 3mg sodium Na, 190mg calcium Ca, 7mg iron, 34.3g protein (34.3g other ingredients) The description is omitted). (See “Chemical Handbook” Application, Chemical Society of Japan, 1973, pages 1366-1367, pages 1404-1405, published by Maruzen Co., Ltd.)
Furthermore, of the seeds,
The component of sesame (sesame seeds) is 19.8 g of protein, 51.9 g of lipid, 18.4 g of carbohydrate, 5.2 g of ash, phosphorus P..540 mg, sodium Na..2 mg, calcium Ca..1200 mg, iron. 9.6 mg, potassium K ·· 400 mg, magnesium Mg ·· 350 mg, zinc 7100 mg, copper Cu ·· 1500 mg (other components omitted) and the like.
Sunflower seed (dry) ingredients per 100g protein 19.9g, lipid 56.4g, carbohydrates 18.1g, ash 2.9g, phosphorus P · · 540mg, sodium Na · · 2mg, calcium Ca · · 95mg, Iron ··· 5.0 mg, potassium K ··· 510 mg, (other components omitted). (See Sesame and Sunflower Seeds for “Fourth Food Composition Tables”, Women's Nutrition University Press, 1994, pages 96-97)
Each said separating agent in this invention contains both an oil component and phosphorus, or an oil component, and isolate | separates into the solder and an oxide the oxide which contact | connects molten solder, or the oxide to which the solder adhered.
In particular, beans or crushed grains rich in oil and fat components (soybeans, red beans, peanuts, coconuts, etc.), seed grains (sesame seeds, sunflower, palm, rapeseed, etc.) are effective. Sesame fatty acids are rich in oleic acid and linoleic acid.
[0023]
In the present invention, an edible oil such as vegetable oil is applied very thinly on the surface of the above various seeds (seeds) and dried, and the oxide in contact with the molten solder or the oxide to which the solder is attached is changed into a solder and an oxide. Demonstrates the effect of instantly starting the action of separation. On the other hand, when edible oil is not applied to the surface of seeds (seed seeds) or the like, it takes several seconds to 10 seconds for the seeds to be heated by the molten solder and for the oil components of the seeds to exude to the surface.
That is, when a separating agent provided with edible oil on the surface of the seed is sprayed on the solder oxide, the edible oil on the surface first acts at the same time as it is immersed in the solder melting tank, and then the oil component exuded from the seed acts. And separated into solder and oxide.
[0024]
Among the cereals, straw is odorless and easy to supply in a fixed amount. The size of the koji grains was obtained by applying a very thin edible oil to a substantially spherical or popcorn shape having an outer diameter of about 1 to 2 mm and a length of about 1 to 2 mm and drying. The adjustment of the particle size and pulverization may be arbitrarily performed as necessary. Sesame also has an outer diameter of about 1 to 2 mm and can be easily supplied in a fixed amount.
[0025]
DETAILED DESCRIPTION OF THE INVENTION
In the first invention of the present invention, the separating agent for separating the solder and the oxide is applied to the surface of the edible oil very thinly, and the surface is dried by the sun or the like. Apply thinly, the grain of beans dried on the surface of the sun, etc., apply the edible oil very thinly on the surface, apply the edible oil on the surface of the seeds dried the surface of the sun, etc. Any one selected from among grains of peanut shells, the surface of which has been dried by the sun or the like, or a combination thereof, and the cereal is any one of straw, rice cake, acne, rice, or a combination thereof, The beans are any one of soybeans, red beans, peanuts, coconuts, or a combination thereof, the seeds are any one of sesame, sunflower, palm, rapeseed, cottonseed, or a combination thereof, and the edible oil is olive , Sesame, sunflower, palm, rapeseed, cottonseed, corn, rice, safra It is made of any one of the above or a combination thereof, and is used as a separating agent for oxides attached to solder or oxides in contact with molten solder. It is harmless to the human body, does not cause pollution, and is extremely A low cost separation agent can be provided. In addition, the utilization rate and recovery rate of solder are improved, which helps to preserve the global environment.
[0026]
In the second invention, about 50 g to 100 g of any one selected from cereal grains, legume grains, seed grains, and peanut shell grains is put into a bottomed container heated to 50 to 250 ° C. Then, cover with half a teaspoon of edible oil and cover with heat, stirring for 1 to several minutes, and then spraying the particles in the bottomed container on the water-absorbing member. After the oil dripping on the water-absorbing member is adsorbed on the water-absorbing member, the surface of the grain is dried by the sun or the like. The manufacturing method is harmless to the human body, does not cause pollution, and can easily provide an extremely low cost separation agent.
[0027]
According to the third aspect of the present invention, the edible oil is sprinkled in a bottomed container heated to 50 to 250 ° C., about half a teaspoon and drawn, and then the grains of grains, beans, seeds, peanut shells are collected. Put about 50g to 100g of any one selected from the grains, cover and heat with stirring for 1 to several minutes, and then spray the grains in the bottomed container onto the water-absorbing member. The surface of the grain is dried by the sun after adsorbing the oil dripping under the grain to the water-absorbing member, and the oxide in contact with the oxide or molten solder adhering to the solder This is a method for producing a product separating agent, which is harmless to the human body, does not cause pollution, and can easily provide a very low cost separating agent.
[0028]
4th invention is described in 1st invention, the process of throwing the oxide which solder adhered in the container, the process of immersing the said container in a molten solder tank, and melt | dissolving the oxide which the said solder adhered. A solder-attached oxide comprising: a step of spraying any one of the separating agents or a combination thereof; and a step of lifting the container from the solder bath and separating the solder and the oxide. Thus, the solder oxide can be separated easily and easily, and the amount of solder deposited on the oxide and discarded is reduced. In addition, the utilization rate and recovery rate of solder are improved, which helps to preserve the global environment.
[0029]
According to a fifth aspect of the present invention, either one of the step of introducing an oxide having solder adhered into a container and the separating agent according to the first aspect or a combination thereof is sprayed on the oxide to which the solder has adhered. And a step of immersing the container in a molten solder bath to dissolve the oxide adhered to the solder, and a step of lifting the container from the solder bath and separating the solder and the oxide. This is a method for separating oxides to which solder has been attached. The oxide separation work can be easily and easily performed, and the amount of solder that adheres to oxides and is discarded is reduced. In addition, the utilization rate and recovery rate of solder are improved, which helps to preserve the global environment.
[0030]
According to a sixth aspect of the present invention, there is provided any one of a step of immersing the container in a molten solder tank about half, a step of introducing an oxide having solder adhered into the container, and a separating agent according to the first aspect of the present invention. A step of spraying one or a combination thereof on the oxide to which the solder is adhered, and a step of separating the solder and the oxide by lifting the container from the solder bath after the solder adhered to the oxide is dissolved. This is a method for separating oxide with solder attached thereto, and the oxide separation operation can be performed easily and easily, and the amount of solder attached to the oxide and discarded is reduced. In addition, the utilization rate and recovery rate of solder are improved, which helps to preserve the global environment.
[0031]
The seventh invention includes a step of scooping the solder oxide floating in the molten solder into the container, a step of spraying one or a combination of the separating agents described in the first invention, A method for separating oxides in contact with molten solder, characterized in that the container is pulled up from the solder bath and the solder and oxide are separated. This reduces the amount of solder that adheres to the oxide and is discarded. In addition, the utilization rate and recovery rate of solder are improved, which helps to preserve the global environment.
[0032]
The eighth invention is a step of spraying any one or a combination of the separating agents described in the first invention onto the oxide floating on the molten solder, and scooping the oxide floating on the molten solder into the container. A method for separating oxides in contact with molten solder, characterized in that it comprises a step and a step of pulling up the container from the solder bath and separating the solder and the oxide. It is easy to implement and reduces the amount of solder that adheres to the oxide and is discarded. In addition, the utilization rate and recovery rate of solder are improved, which helps to preserve the global environment.
[0033]
Hereinafter, an oxide separating agent in contact with an oxide to which solder is attached or a molten solder, a method for producing the same, and a method for separating an oxide according to an embodiment of the present invention will be described.
[0034]
【Example】
Example 1
Hereinafter, the separation agent of the oxide attached to the solder or the oxide in contact with the molten solder in Example 1 of the present invention and the manufacturing method thereof will be described with an example of sesame grains coated with a very thin olive oil on the surface and dried. To do.
[0035]
In the method for producing the separating agent comprising sesame, about 50 g to 100 g of sesame grains were put in a bottomed container heated to 50 to 250 ° C. (in a state where the gas stove was lit and the frying pan was applied for about 1 to 2 minutes). Then, cover with half a teaspoon of olive oil and cover, and stir until the sesame seeds have boiled and swelled to about twice.
Thereafter, the sesame grains in the bottomed container are sprayed on the water-absorbing member to adsorb the oil drooping below the grains, and then the surface of the sesame is dried in the sun.
[0036]
Another method for producing the separating agent is to sprinkle olive oil in half a teaspoon in a bottomed container heated to 50 to 250 ° C. (in a gas stove with a frying pan for about 1 to 2 minutes). After pulling the oil, add about 50 to 100 g of sesame grains, cover, and fry while stirring until the sesame grains are repelled and swelled about twice.
Thereafter, the sesame grains in the bottomed container were sprayed on the water-absorbing member to adsorb the oil drooping below the grains, and then the surface of the sesame was dried in the sun.
The water absorbing member was a sheet-like paper, for example, newspaper. Of course, general commercially available blotting paper such as water and oil may be used.
[0037]
The sesame grains are repelled, and the sesame skin is peeled at least partially by bulging about twice, so that the oil component in the sesame oozes out into the epidermis. Moreover, the supplied edible oil adheres to the surface of sesame. At the same time, the expansion of sesame makes it easy to decompose and burn with molten solder. As a result, sesame seeds with oil on their surfaces instantly promote the separation of solder and oxide.
[0038]
(Example 2)
Next, a method for separating the oxide to which the solder is attached or the oxide in contact with the molten solder in Example 2 of the present invention will be described with reference to the drawings.
[0039]
FIG. 1 is a block diagram showing a main part of a concept of a process (separation operation) for separating only oxide from oxide to which solder is attached in one embodiment of the present invention. Reference numerals 1 to 7 surrounded by circles indicate steps of the separation process.
In the first step, the oxide container 1 with solder attached (the wire cage / mesh wire diameter is about 0.5 mm and one side of the rectangular opening is about 1.2 mm), or a dip solder bath, or Submerge about half in a flow solder bath (jet solder bath). The temperature of the molten solder is set to about 280 ° C to 290 ° C. (In the embodiment of FIG. 1, a flow solder bath 2 is shown.)
In the second and third steps, a lump of oxide (oxide with attached solder / solder dross) 3 adhered to the solder is put to about half the volume of the net cage 1.
The container for scooping the solder dross 3 may use an arbitrary tool such as a spoon, a pincer, or tweezers.
In the fourth step, the separating agent 5 of the present invention, for example, olive oil is applied to the surface very thinly, the dried sesame grains are scooped and sprinkled on the surface of the oxide 3 to which the solder adheres (sprinkle). ). The amount of spraying may be such that it almost covers the oxide 3 to which the solder adheres. For example, with respect to the volume of 100 cc of the oxide 3 to which the solder is attached, the amount of the separating agent sprayed is about 0.7 to 0.7 cups.
In the fifth step, the mesh basket 1 is moved up and down or left and right, and the oxide 3 to which the solder is attached is raised or lowered from the solder melting surface 4. This operation is repeated several times.
In the sixth step, it is confirmed that the oxide 3 to which the solder has adhered is reduced in volume and the solder that has adhered to (attached to) the oxide has melted, and then the mesh basket 1 is removed from the molten solder surface 4. Pull up.
In the seventh step, the oxidized soot (oxide) 6 remaining in the mesh basket 1 is discarded into a waste container or the like.
In the first to seventh steps, the solder and oxide separation work is completed. During this time, the working time was about 1 to 1.5 minutes. 90% or more of the solder adhered to the oxide could be recovered, and the bulk of the oxide alone was reduced to about 10 to 20% of the original.
[0040]
As described above, according to the present invention, the separation of the solder and the oxide can be carried out very easily and safely in a short time. Of course, it is not necessary to wear protective equipment when handling the separating agent. In addition, olive oil is applied very thinly as a separating agent and dried sesame grains are used, so it is extremely inexpensive and useful for environmental protection.
[0041]
Needless to say, the order of the first to seventh steps may be arbitrarily changed or deleted.
For example, prior to the molten solder (outside the solder bath or above the molten solder surface), the step of putting the oxide with the solder attached into the container is prioritized first. Thereafter, a step of spraying any one or a combination of the separating agents on the oxide to which the solder is attached, and a step of immersing the container in a molten solder bath to dissolve the oxide to which the solder is attached. The step of pulling up the container from the solder bath and separating the solder and the oxide may be sequentially performed.
[0042]
Further, the step of introducing an oxide having solder adhered into a container outside the molten solder, the step of immersing the container in a molten solder bath and dissolving the oxide adhered to the solder, and the separating agent The step of spraying any one or a combination thereof on the oxide to which the solder is attached and the step of lifting the container from the solder bath and separating the solder and the oxide may be sequentially performed. .
[0043]
(Example 3)
Next, a method for separating oxide floating on the molten solder in Example 3 of the present invention will be described. The separating agent in this case was the same as in Example 1. (For example, sesame grains with very thin olive oil applied to the surface and dried)
The amount of separating agent sprayed on the oxide was also the same as in Example 1. The procedure for separating the solder and oxide is as follows.
[0044]
First, in the first step, an oxide-containing storage container (mesh cage / mesh wire diameter of about 0.5 mm and one side of the rectangular opening is about 1.2 mm) is a dip solder bath or a flow solder bath. Submerge so that the upper edge of the container is hidden.
In the second step, oxides (solder dross) floating on the molten solder are collected by a net cage and the mesh cage is pulled up to about half.
In the third step, the separating agent of the present invention is sprinkled (sprayed) on the surface of the oxide floating on the molten solder. The application amount may be such that the surface of the oxide is substantially covered. For example, the amount of the separating agent sprayed is about 0.7 to 0.7 cups per 100 cc of oxide volume.
In the fourth step, the mesh basket is moved up and down or left and right to raise or lower the oxide from the solder melting surface. This operation is repeated several times.
In the fifth step, it is confirmed that the volume of the oxide is reduced and the solder attached to (attached to) the oxide is melted, and then the mesh basket is pulled up from the molten solder surface.
In the sixth step, the oxidized soot (oxide) remaining in the net basket is discarded into a waste container or the like.
[0045]
In the first to sixth steps, the solder and oxide separation work is completed. During this time, the working time was about 1 minute. (Neither shown)
In the case of Example 3 described above, the separation of the solder and the oxide can be performed very easily and safely in a short time.
[0046]
In this case, it goes without saying that the order of the first to sixth steps may be arbitrarily changed, added or deleted.
For example, the third step is replaced, and priority is given to the step of spraying any one or a combination of the above separating agents on the oxide floating on the molten solder. Thereafter, the step of scooping the oxide floating on the molten solder into the container and the step of lifting the container from the solder bath and separating the solder and the oxide may be sequentially performed. (Not shown)
In Examples 2 and 3, the example in which the mesh basket is used as the container for the oxide to which the solder is attached or the oxide floating on the molten solder has been described. However, the present invention is not limited to the mesh basket and is an arbitrary member. Needless to say, it is good. For example, the container may be formed of a punching metal provided with a plurality of circular or rectangular openings. As an example, rectangular openings with an opening area of 1 mm ↑ 2 to 2.25 mm ↑ 2 are arranged in a multi-row multi-column (matrix shape) with a pitch of 1.5 mm to 2 mm on the bottom surface and each side surface of the storage container. It was set as the composition which becomes.
[0047]
In addition, as a heating device for heating the oxide to which the solder is attached, a general flow (jet) type soldering device and a static dip type soldering device may be used in addition to the solder melting tank.
Furthermore, instead of scooping up the separated oxide (oxidized soot) in a container such as a mesh basket, the oxide may be scraped off with a heat-resistant plate or the like. You may make it flush.
[0048]
Furthermore, the separating agent described in the above examples is not limited to sesame grains that have been applied with a very thin olive oil and dried. In addition, grains of cereals that have been applied with a very thin surface of edible oil and dried on the surface, beans that have been coated with a very thin surface of edible oil and dried, or beans that have been crushed into granules, and edible oil on the surface. As a seed grain (except sesame seeds) with a very thin application and dried surface, or as a combination of peanut shell grains with a very thin coating of edible oil on the surface and a dry surface In addition, a solder oxide separating action can be obtained.
[0049]
Furthermore, it is good also considering the separating agent described in the said Example as the member which fried edible material with edible oil. As a first example of the member, cereal powder such as wheat flour and edible powder such as corn flour are kneaded with at least one of water, oil, various seasonings, and other additives, and in sheet form or The separating agent was formed into a predetermined shape such as noodles, rods, rectangles, disks, spheres, cups, etc. and fried in edible oil. As a substitute for the separating agent, foods marketed under trade names such as cup noodles (instant noodles, noodles) and tongaric corn may be used. Needless to say, when using these commercially available products, they are crushed to an appropriate size (outer dimensions of 5 mm square to 10 mm square, or a rod-like or noodle length of several mm to 10 mm) and sprayed onto the solder oxide.
[0050]
As a second example of the separating agent of the present invention in which the edible material is fried with edible oil, a separating agent obtained by slicing potato into slices or cutting into a rod shape and fried with edible oil is used. In this case as well, commercially available products such as potato chips and potato sticks may be used after being crushed and cleaved.
The potato chips are composed of 3.9 g of protein, 32.5 g of lipid, 48.2 g of carbohydrate, 365 mg of sodium Na, and other components in 98 g.
[0051]
As a third example of the separating agent of the present invention in which an edible material is fried in edible oil, tempura (fried tempura / fried ball) fried in edible oil by melting Meriken powder in water, and edible oil with bread crumb on the surface of the food It was assumed that it was derived from fried rice. The outer dimension is preferably about 10 mm or less.
Similarly to the sesame seed, the separating agent obtained by frying the edible material described in the first to third examples with the edible oil efficiently and quickly separates the oxide to which the solder is attached into the solder and the oxide.
[0052]
【The invention's effect】
As described above, according to the present invention, it is possible to provide an oxide separation agent that is safe, harmless to the human body, causes no pollution, and is extremely inexpensive.
In addition, the solder and oxide can be separated easily, reliably, and quickly, and the amount of solder that adheres to the oxide and is discarded is reduced. As a result, the utilization rate and recovery rate of solder are improved, which helps to protect the global environment.
[Brief description of the drawings]
FIG. 1 is a configuration diagram of a main part of a concept of a separation process of solder and oxide in an embodiment of the present invention.
[Explanation of symbols]
1 container
2 Solder bath
3 Oxide with solder attached (Solder and oxide stuck together)
4 Molten solder surface
5 Separating agent
6 Oxide (oxidized soot)
10 Molten solder

Claims (19)

Any one selected from the components of cereals, beans, seeds, and peanuts that have the edible oil on the surface and the edible oil leached by heating in a bottomed container that has been edible oil , or A separating agent for oxides attached to solder or in contact with molten solder, characterized by comprising a combination thereof. Millet the cereal, millet, millet, any one of rice or a combination thereof, the beans of soybean, azuki bean, peanut, any one of coconut or a combination thereof, sesame the seed, sunflower, coconut 2. The oxide separating agent in contact with an oxide or a solder on which solder is attached, according to claim 1, wherein one of rapeseed and cottonseed or a combination thereof is used. The said separating agent was granulated, The separating agent of the oxide which contact | connects the oxide to which the solder of Claim 1 adhered, or a molten solder. The soldered oxidation according to claim 1, wherein the edible oil is one of olive, sesame, sunflower, palm, rapeseed, cottonseed, corn, rice, safflower, or a combination thereof. Separating agent for oxides in contact with objects or molten solder. After putting any one member selected from cereals, beans, seeds, and peanut shells into the bottomed container, sprinkle with edible oil and heat to spread on the surface of the dosing member from the inside of the dosing member The manufacturing method of the separation agent of the oxide which contacted the oxide to which the soldered fat or the molten solder characterized by including the oil-and- fat component which came out and the said edible oil adhered. Oil that has exuded from the inside of the dosing member on the surface of the member by heating any one member selected from cereals, beans, seeds, and peanut shells in a bottomed container filled with edible oil The manufacturing method of the isolation | separation agent of the oxide which contacted the oxide with which the solder adhered to the component and the said edible oil, or the molten solder characterized by the above-mentioned.   A method for producing an oxide separating agent in contact with an oxide to which solder is attached or an oxide, wherein the sesame is sprinkled into a bottomed container and then sprinkled with edible oil and heated to such an extent that the sesame is repelled and expanded.   A method for producing an oxide separating agent in contact with a solder-attached oxide or a molten solder, wherein the sesame is heated in a bottomed container filled with edible oil so that the sesame is repelled and expanded.   After pouring sesame into a bottomed container, sprinkle with edible oil, heat the sesame to the extent that it swells and swells, and then dry the surface of the sesame. A method for producing an oxide separating agent in contact therewith.   Any one member selected from cereals, beans, seeds, and peanut shells heated with edible oil is sprayed on the water-absorbing member, and the surface of any one of the members is dried. The manufacturing method of the isolation | separation agent of the oxide which the solder in any one of Claims 5-9 adhered, or the oxide in contact with molten solder.   5. A step of throwing an oxide with solder attached into a container, a step of immersing the container in a molten solder bath, and an oxide with the solder attached to the separating agent according to claim 1. A method of separating the oxide to which solder is attached, the method comprising: a step of spraying to the solder tank; and a step of lifting the container from the solder bath and separating it into solder and oxide.   The method for separating solder-attached oxide according to claim 11, further comprising the step of lifting the container from the solder bath, immersing it, or moving it up and down a plurality of times after spraying the separating agent.   A step of introducing an oxide with solder attached into a container, a step of spraying the separating agent according to any one of claims 1 to 4 onto the oxide with solder attached thereto, and the container in a molten solder bath Separation of the oxide with solder attached, comprising: a step of dissolving the oxide adhered to the solder immersed in the substrate; and a step of lifting the container from the solder bath and separating it into solder and oxide Method.   The step of immersing the container in a molten solder tank by about half, the step of introducing an oxide with solder attached in the container, and the solder adheres to the separating agent according to any one of claims 1 to 4. A method for separating solder-attached oxide, comprising: a step of spraying on the oxidized oxide; and a step of lifting the container from the solder bath and separating it into solder and oxide.   The step of scooping the oxide floating in the molten solder into the container, the step of spraying the separating agent according to any one of claims 1 to 4 on the oxide, the container is lifted from the solder bath, and the melting And a step of separating the oxide from the solder. A method for separating the oxide in contact with the molten solder.   16. The method for separating oxide in contact with molten solder according to claim 15, further comprising a step of moving the container up and down a plurality of times by spraying the separating agent and then moving the container up and down from the solder bath.   A step of spraying the separating agent according to any one of claims 1 to 4 on an oxide floating on a molten solder, a step of scooping the oxide floating on the molten solder into a container, and the container in a solder bath And separating the oxide from the molten solder, and a method for separating the oxide in contact with the molten solder.   The oxide or molten solder to which solder is attached, characterized in that the oxide sprayed with the separating agent according to any one of claims 1 to 4 is heated with molten solder and separated into solder and oxide. Method for separating oxides in contact with water.   The oxide sprayed with the separating agent according to any one of claims 1 to 4 is heated with molten solder, and the oxide is removed with a mesh basket. Separation method of oxide in contact.

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