WO2006013643A1

WO2006013643A1 - Method of warm plastic forming of magnesium and magnesium alloy, and intermediate for use therein

Info

Publication number: WO2006013643A1
Application number: PCT/JP2004/011659
Authority: WO
Inventors: Tetsuro Suzuki
Original assignee: Moritec Co., Ltd.
Priority date: 2004-08-06
Filing date: 2004-08-06
Publication date: 2006-02-09
Also published as: TWI281954B; CN1997472A; CN1997472B; JP4510819B2; TW200610839A; JPWO2006013643A1

Abstract

A method of warm plastic forming of magnesium and a magnesium alloy, characterized in that it comprises a step (S2) of forming magnesium hydroxide on the surface of a work to be formed comprising of magnesium or a magnesium alloy, a step (S3) of forming a magnesium soap layer in the magnesium hydroxide layer, and a step (S4) of subjecting the resultant work having the magnesium soap layer formed thereon to a warm plastic forming into an article having a prescribed shape.

Description

Specification

7Geneci 厶 and Magnon 厶 ai Warm plastic working method of ai and intermediates used in the process

The present invention relates to a method of warm plastic working of a magnesium alloy and a magnesium alloy (hereinafter abbreviated as “magnesium alloy”) and an intermediate used in the process.

= 1 ri

Technology

Gnesi 厶 material is the lightest of all practical metals, its thin mouth

□ α has excellent specific strength, electromagnetic sealing, heat dissipation, vibration damping, etc., and has the advantage that less recycling energy is required for recycling. In recent years, electric machines ¾§ «machine ¾s, n

Mouth

Widely used in various fields such as evening sS, optical equipment, automobile parts, sporting goods, etc.

Magnesium bran is not cold-worked, but 20 ° C ~

Warm plastic working is possible by heating to about 400 ° C and pressing. Usually, this is a place where the rolled material (stretched material) of magnetic brazing material is squeezed or bent. Then, mold with a press or a vender using a die.

<To reduce frictional resistance, oil-based lubricants and non-lubricants such as silicon =]-one are used.

For example, this type of prior art is disclosed in, for example, Japanese Patent Laid-Open No. 2000-053 4 3

7 Gazette, JP 2 0 0 3 ― 5 5 7 9 5 ■> = f Gazette, JP 2 0 0 4-5 1

Disclosure of the invention that can be cited as such

However, since the processing temperature is 200 ° C or higher, the lubricant may scorch the mold, the viscosity becomes high, and the processing such as squeezing is performed. <<Also, it is necessary to polish the mold in order to remove the lubricant and scorched carbide adhering every several to several tens of units, which is cumbersome and the production efficiency is poor. Especially for progressive equipment

Mouth, tens of minutes »—-"

Remove the material and clean the mold.If it is not polished, it will not be possible to process the banded fuchs cake continuously.

In addition, if the process is continued with the lubricant or carbide attached, all the doors will be opened.

ス Scratches and scratches are generated at the opening and cracks, and cracks and turtles are generated at the mold part of α

Mouth

Furthermore, it is difficult to clean the lubricant and carbide adhering to the molding of the green rice bran.

Instead of using a lubricant, there is also a method of inserting a mold release mold such as a pol- yle full-featured loci lance between the key and the gold, but this is not suitable for mass production. In addition, when trying to increase the precision of drawing, etc.

□ Stripes and dents are generated on the surface of π.

The purpose of the present invention is to eliminate such drawbacks of the prior art and to prevent the burning of the lubricant on the mold, and to reduce the number of times of the final cleaning of the mold. Providing an intermediate for use in the warm plastic processing method and processing method of

In order to achieve the S-recording purpose, the first means of the present invention is to form a magnesium hydroxide layer on the surface of a magnetic layer made of magnesium or a magnetic alloy. In the process of forming a magnetic layer and an ink layer in the magnesium hydroxide layer, and forming the magnetic layer in a predetermined shape.

The second means of the present invention is characterized in that, in the second means, the formation process of the magnesium hydroxide layer is a sub-phase. The magnesium hydroxide layer is formed by contacting an alkaline solution containing nitrate and the above-mentioned salt to form a magnesium hydroxide layer on the surface of the flake. The process of formation of an aliphatic strength ionic acid, including an aromatic strength or an aromatic strength rubonic acid. It is characterized in that the S-hydroxylized hydroxide layer is brought into contact with the liquid and the magnesium hydroxide layer on the surface of the fork is reformed into a magnetic layer. Is a thing

According to a third means of the present invention, in the first or second means, the aliphatic strength rubonic acid has no substituent or has a substituent, and the aliphatic group having 6 24 4 carbon atoms. From the strong rubonic acid, the aromatic force rubonic acid is an organic compound selected from aromatic rubonic acid having no substituent or having a substituent and having a prime number of 7 20 It is characterized by and

According to a fourth means of the present invention, in the third means, the organic compound is stearic acid.

A fifth means of the present invention is characterized in that in the first means, an anodizing treatment step is provided after the inter-B plastic addition step. The sixth means of the present invention is a magnetic fork or a magnesium A

It is characterized by the formation of a magnetic 厶 soap layer on the surface of a process consisting of at.

According to a seventh means of the present invention, in the sixth means, the organic compound forming the magnesium-sodium soap layer has no substituent or has 6 to 6 carbon atoms having a substituent. Organization selected from 2 aliphatic rubonic acids of 4 or non-substituted or substituted aromatic rubonic acids having 7 20 carbon atoms 1 = 1 It is characterized by being a thing

The eighth means of the present invention is characterized in that, in the seventh means, the oxide is a stearate salt.

The present invention has the above-described structure, and the mold does not burn the lubricant. <The number of times the mold is cleaned and polished is small. Workability is high. It is possible to provide an intermediate for the method and its addition method. Brief Description of Drawings FIG. 1 is a diagram □ ―Cha 卜卜 for clarifying the method of adding warm plasticity of magnesium bran according to the first embodiment of the present invention.

Figure 2 is an enlarged cross-sectional view of a monolith with a magnesium hydroxide layer formed on the surface.

Fig. 3 is an enlarged cross-sectional view of a steel plate with a magnesium soap layer formed on the surface.

FIG. 4 is a schematic configuration diagram of a continuous press heating apparatus used in the embodiment of the present invention.

Fig. 5 is a diagram □ ― 卜卜 for demonstrating the method of warm plastic addition of the magnetic slag according to the second embodiment of the present invention.

Next, as the magnetic plating used for M in the invention described in the embodiment of the present invention, for example, Mg-A I 1 Zn system 1 = 1 3L,

M g One Z n ― Z r system Mouth! &, Μ g ― A I alloy, Mg g rare earth element alloy, etc.

Note M g ― A I One Z n system A A.

Specifically, the mouth m. Is A Z 3 1 A,

A Z 3 1 B, A Z 3 1 C, A Z 6 1 A A Z 80 A, etc. Preface M g ― Z n ― Z r system A now

体 As a matter of fact, Z K 5 1 A, Z K

6 1 A, ZK 60, 6, M 5, M 4, etc. 刖 Note The Mg-A 1 system port SL has AM 100 A and so on physically.

M g ― As a rare earth element-based die, it is physically EZ 3 3 A, z E 4 1 A,

Q E 2 2 A etc.

For example, the shape of the magnesium material is a plate, a tube, a rod, or a pellet.

There are various types of processing such as squeezing, bending, compression, tension, shearing, etc. For example, it has no substituent, or has a substituent having a carbon number of 6 24, an aliphatic carboxylate, a non-substituent or a substituent. 7 to 2 carbon atoms A group of 0 aromatic strength rubonic acid salts can be used.

In the aliphatic strength rubonate, the aliphatic chain may be a straight chain or a branched chain. It may be saturated or unsaturated. The number of carbons in the molecule is preferably <is 10 2 4, more preferably 8

~ 2 2

Examples of aliphatic strength rubonic acid of aliphatic strength rubonic acid salt include hexanoic acid 4-methylvaleric acid, 2-ethylbutyric acid, 2,2-dimethylbutyric acid, heptanoic acid Nanoic acid, repulsive acid, Kunde force acid,

— · ·····

©-phosphate Li cystine acid, Pal Chin acid, hepta Ding force phosphate, steer-phosphate concentrated acid acid, base pair two phosphate, force ^{1 ί} Mel such as I Sosutea-phosphate. Examples of salts of aliphatic strength rubonic acid salts include, for example, alkali strength ^ s., Alkaline strength earth metal ½ & J salt, and ammonium salt. Favorable earth metal salts

In addition, examples of the substituent of the aliphatic strength rubonic acid salt include a hydroxyl group, a strong ruxoxy group, an amino group, an alkoxy group, a acetyl group, and an octagonal atom. The number of substitutions is preferably 5 or less. <Is 3 or less, more preferably

0 or 1

Examples of preferred physical organic compounds of aliphatic strength rubonic acid salts

,

For example, lay lauric acid, lauric acid, lauric acid, sodium sulfite, sodium stannate, sodium palmitate, sodium sterate, behen Acid 卜 U 厶, 1, 2 ― 卜才才才タタデソソソソソステソ ― 2 2 ― ― ― ― 2 デIs

The number of carbons in the aromatic rubonic acid salt is preferably 7 to 20 and more preferably <7 to 14.

For example, benzoic acid, phthalic acid, isofartic acid, terephthalic acid, disulfuric acid, benzoic acid rubobo There are acid, benzene salt rubonic acid, naphthoic acid and so on. Examples of aromatic strength rubonic acid salts include gal strength metal ½ m, gal strength earth metal salt, amine salt, and ammonia salt. Metal strength, metal strength ^ SL '桌 ½α is preferred

Examples of the substituent of the aromatic power rubonate include a hydroxyl group, a strong ruboxy group, an amino group, a alkoxy group, a acetyl group, a non-gen atom, and an alkyl group having 16 carbon atoms. Number of substitutions is 5 or less, preferably

Less than 3, preferably <is 0 or 1.

Examples of preferred physical sensitizers for aromatic rubonic acid salts include sodium benzoate, sodium benzoate, lithium phthalate, sodium phthalate, and so on. There are, for example, sodium phthalate, sodium phthalate, etc. The lubricant of the present invention includes, for example, an anti-foaming agent, a viscosity adjusting agent, an antioxidant, an antifoaming agent, and an adjustment of the viscosity. Fig. 1 is a flow chart for explaining the method of plasticity between plates / magnesium according to the first embodiment.

As shown in the figure, at the step (hereinafter abbreviated as * S) 1, carbides adhered to the surface of the heated magnetic material (hereinafter referred to as “Fuku”) during the rolling process. Clean the flakes with an organic solvent such as thinner or clean to remove oils and fats and other contaminants. Next, with S 2, apply magnesium hydroxide on the entire surface of the flakes. The formation of the magnesium hydroxide layer of the layer is carried out by adding an appropriate amount of sodium hydroxide in an aqueous solution of sodium nitrite and stirring it. Dish / 1 2 0. c Maintain the temperature within the range of 40 ° C. The concentration of the sodium nitrite solution is 50 g / l, 100 g / L, and the amount of sodium hydroxide added is 39 5 S. Immerse the hook in this heated processing solution for 0.5 min and 5 min for 0.5 min and 5 min. In order to determine the time, the immersion time is given a range as described above.

After soaking, remove the cake from the treatment liquid, wash it with water, and perform the above-mentioned pretreatment until the surface of the flakes becomes milky white and does not become glossy. Nitrous acid to form a strong magnesium hydroxide layer By immersing in an aqueous solution of sodium chloride, the lubricant that has been carbonized during rolling that was not removed by the organic solvent in S1 is surely removed. Fig. 2 is an enlarged cross-sectional view of ク -k (alumi material) 2 in which a magnesium hydroxide layer 1 is formed on the entire surface. is there.

Next, in S 3, the formation of the magnesium 厶 soap layer is performed. Prior to the formation of this 厶厶 soap layer, the stearic acid sodium salt, which is one of the above-mentioned aliphatic sulfonic acids, is added to the water. SC1 stearin that is heated to a temperature of 80 ° C to 100 ° C when the dissolved lubricant solution is added with water and hydroxylated water The concentration of the acid sodium solution is

3 S / L ~ 7 g / and the amount of hydroxylation power added is 8 g L 1 2 g

/

In the lubricant solution, the magnesium hydroxide layer on the surface causes a chemical reaction in the lubricant solution when the H-treated pre-treated cake is immersed in the lubricant solution.厶 Form a number layer. The soaking time of the cake is 1 to 5 minutes. Fig. 3 shows a modification of the hydrogenated magnesium layer 1 and a magnetic layer V-ken layer on the entire surface.

FIG. 3 is an enlarged cross-sectional view of a steel plate (aluminum material) 2 in which 3 is formed.

In this way, a magnetic layer was formed on the surface.

(Intermediate body) is set in a continuous press processing apparatus to be described later and subjected to predetermined press processing (S 4). After this press processing, the molded product is anodized (S 5).

This anodizing treatment consists of three steps of pretreatment, oxidation treatment and posttreatment. The pretreatment is a treatment to remove the lubricant adhering to the surface of the processed product. Since Magnesium で, which is an alkaline cleaning or acid cleaning, is resistant to alkalis, it can be effectively cleaned using a cleaning agent with a high degree of alkalinity. In the case of acid cleaning, it is better to use a cleaning agent with low acidity that does not damage the substrate. Consists of a mixed aqueous solution of length oil and sodium succinate, 75 ° C 8 0. Soak in a bathing bath maintained at c, and carry out 7 prescribed energizations in A. Aqueous solution of sodium oxalate and acid fluoride and sodium hydrate for a specified time.

;

After cleansing and finishing the oxidation treatment, the post-treatment of the product is washed, dried and dried.

By this anodic oxidation treatment, a dense oxide film is formed on the surface of the process an. <<Oxide film functions as an anti-corrosion film for internal metal, and also serves as a base film for coating Therefore, after finishing the anodizing treatment, the coating finish of S6 is completed.

FIG. 4 is a schematic configuration diagram of a continuous machining apparatus used in the present embodiment.

In this continuous press processing device, a lower basin 5 is fixed on a base 4, and the lower basin 5 is gradually moved along the conveying direction X of the first step. A plurality of fixed-side molds 6 a 6 e with a recessed cross-section shape are attached.

Four ports' 7 are erected on the outside of the lower estain 5 of the base 4, and the upper estage 9 is supported by the support member 8 so as to be movable up and down. Yes. On the lower side of the upper stage 9, the movable side mold 10 0 a 1 has a cross-sectional shape with a gradually longer projecting dimension than the fixed side molds 26 & 6 e. 0 e is installed multiple times,

<_ Upper side stain 9 (movable side mold 10 a to 10 e) is the top plate 1

1 is intermittently moved up and down by the hydraulic cylinder 12 attached to 1, and the fixed mold 6a 6e and the movable mold 10a to 10e (Not shown) are built-in, and nn degrees are controlled at 2100 ° C 3500 ° C / mi 1st.

グ ··················································································· It is wound in the shape of a spout and a mouth.

^

It is sent intermittently in the direction of the arrow X and conveyed along the lower side esthetic 5. Then, intermittent up / down movement of upper stage 9 (movable side metal 10 a to 10 e) with respect to lower side process 5 (fixed side mold 6 a 6 e) When the operation and the sequential movement of the key 2 are co-operated, U and time 2 are gradually narrowed down by the interstitial force, separated as a single product, and finally shunted. It is taken out as a molded product 15 from 1

^ Ρ · Inventive interstitial processing method is suitable for this progressive-type continuous press processing device because there is no burning of the lubricant. Q

FIG. 6 is a diagram for explaining a work warm plastic working method according to the second embodiment of the present invention.

The condition of formation of the magnesium hydroxide layer is as follows: R1 si washes the wet workpiece added with S 1, and formed a hydroxylated magnesium layer on the entire surface of S 1 with S 2 Same as the embodiment

Next, in S 3, a lubricant solution in which stearic acid sodium hydroxide and hydroxide power lithium are dissolved is applied to the heated mold, and in S 4, the mold is pressed with the mold. In this mold, the lubricant solution is separated from the magnesium hydroxide layer on the surface by the press pressure and the heat from the mold, and the magnetic layer is separated from the magnetic layer. Is formed. This magnesium-sodium soap layer functions as a lubricant in a process in which the press is pressed to form a flake into a predetermined shape.

After the pressing process, the process is anodized to form a dense oxide film on the surface (S 5), and then a paint finish is performed (S 6). In the above embodiment, the hydroxide hydroxide layer or the magnesium alloy is used. When forming the soap layer, the fork is submerged in the solution, but the solution can also be applied by applying the solution to the workpiece using a spine.

The method of inter-plastic processing of a magnesium brazing material according to the present invention is, for example, a spine.

-Power devices such as power cones and TV frames-Personal computers computers-Computer devices such as personal computers, devices such as portable alpha-frames, dental cameras Applicable to a variety of products such as optical equipment such as a lens, whirling steering force, and other white-wheeled vehicle parts. οε

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Claims

The scope of the claims

1. Magnesium fork is a process of forming a magnesium hydroxide layer on the surface of a work piece that is equivalent to a magnesium alloy.

A process for forming a magnesium cocoon layer on the hydroxy hydroxide layer

The magnetic layer formed with the magnetic layer V-ken layer is subjected to warm plastic processing into a predetermined shape.

A method for warmth processing of magnesium alloy and magnesium alloy characterized by containing

2. In claim 1, the formation process of the magnesium hydroxide layer is carried out by contacting the alkaline solution containing nitrite and the fluid described in j with the surface of the magnesium hydroxide. The process of forming the magnetic layer is the process of forming the magnetic layer, which includes the aliphatic strength and the aromatic strength. This is a step of bringing the hydroxylated magnesium layer on the surface of the aqueous solution into contact with the aqueous solution in which the hydroxylated magnesium layer is formed in contact with the aqueous solution to modify the magnesium hydroxide layer into a granular layer.厶 and Magnesium 厶. m / dish

Plastic working method

3. In claim 1 or 2, the aliphatic sulfonic acid is an aliphatic sulfonic acid having no substituent or having 6 to 24 carbon atoms having a substituent. The aromatic carboxylic acid is an organic compound selected from those having no substituents or those having 7 to 20 carbon atoms having a substituent having 7 to 20 carbon atoms. And a method of warm plastic working of the magnetic mouth and the magnetic mouth.

4. The method of warm plastic working of mnesium and magnesia m, characterized in that the organically modified force is stearic acid in the main scope 3

5. In the first aspect of the present invention, the magnet ridge and the magnetosheath are characterized by having an anodic oxidation treatment step after the plastic deformation process after k 'nL tun. 間 Metal plastic working method o

6 Gneissium or forge made of magnesium-gold-Magnesium and magnesium gold, characterized by the formation of a magnesium-seed layer on the surface of the magnet: Interstitial machining Intermediates.

7 5

If the organic compound forming the magnesium soap layer does not have a substituent or has a substituent, the number of carbon atoms having a substituent is 6 24. Magnesium, characterized in that it is an organic compound selected from rubonic acid, or an aromatic compound having 7 or 20 carbon atoms that has no substituent or a substituent. And warm intermediates of GN

8 In the range 7 of the determination, the organic compound is a stearate salt.

W sex intermediate.