KR101156399B1 - Surface lubrication treatment material for hot and constant temperature pozing process - Google Patents

Abstract

The present invention relates to a surface lubricating agent composition for forming a lubricating film on the surface of a raw material before molding in hot and warm forging processes.

The surface lubricating agent composition used in the hot and warm forging process according to an embodiment of the present invention is one of lithium silicate, potassium metasilicate, sodium metasilicate and sodium silicate as an inorganic adhesive or coating agent based on 100 parts by weight of purified water. Silicates of 15 to 25 parts by weight; 2.5 to 55 parts by weight of an inorganic lubricant used by mixing at least one of molybdenum disulfide, graphite and carbon; 0.2 to 5 parts by weight of a surfactant for pigment dispersion; 0.1 to 0.3 parts by weight of non-silicone antifoaming agent; And a thickener 0.6 to 1.3 parts by weight.

Hot, warm, lubricating film, molybdenum disulfide, potassium silicate

Description

Surface lubrication treatment material for hot and constant temperature pozing process

The present invention relates to a surface lubricating agent composition used in hot and warm forging processes, in particular, very low volatility of the pigment during forging operations, to improve the lubricity of the forging product and the mold, to prevent seizure, It improves the physical properties such as oxidation resistance, high strength, and corrosion resistance, and can obtain high precision products, and it is excellent for extending the life of mold by the protection of mold and rust resistance of forged products, and stability and lubricity even at high temperature of 500 ~ 1300 ℃. It relates to a surface lubricating agent composition used in hot and warm forging process having a.

In general, forging is one of metal processing methods for pressing and deforming a metal mass or a thick plate, such as forging hot forging to work at high temperature, cold forging to work at a lower temperature than the hot. The hot forging is forging at a high temperature such as aluminum near 500 ° C, steel near 900 ° C, stainless steel near 1300 ° C, and so on. As a result, most of the hot forgings are currently forged as a release agent without a special lubricant.

However, surface lubrication in hot forging improves the lubricity of forging products and molds, prevents seizure, and has excellent physical properties such as oxidation resistance, high strength and corrosion resistance of forgings, and obtains high-precision products. It is necessary to obtain excellent effect on the life extension of mold by protection and the rust resistance of forged products.

On the other hand, conventional surface lubrication treatment after degreasing the surface formed on the surface, such as degreasing or shot or sanding, and then forging by spraying the release agent to the product and the mold or coated with lubricating oil and heated to a high temperature, The hot forging was pressed to forge, and accordingly, the development of a lubricating agent for surface lubrication in hot forging was urgently needed.

The present invention has been made in view of the problems and necessity of the prior art, the object of the present invention is excellent sedimentation stability and defoaming force, very low volatility of the pigment during forging work, lubricity of forging products and molds It is to provide a surface lubricating agent composition used in hot and warm forging process to increase the.

Another object of the present invention is to provide a surface lubricating agent composition used in the hot and warm forging process, which prevents sintering, has excellent physical properties such as oxidation resistance, high strength, corrosion resistance, and the like, and can obtain a high-precision product. There is.

It is another object of the present invention to provide a surface lubricant treatment composition for use in hot and warm forging processes which are excellent for extending the life of molds and protecting the rust of forged products by mold protection, and having stability and lubricity even at high temperatures of 500 to 1300 ° C. To provide.

An object of the present invention described above, with respect to 100 parts by weight of purified water, 15 to 25 parts by weight of one silicate of lithium silicate, potassium metasilicate, sodium metasilicate and sodium silicate as an inorganic adhesive or coating agent; 2.5 to 55 parts by weight of an inorganic lubricant used by mixing at least one of molybdenum disulfide, graphite and carbon; 0.2 to 5 parts by weight of a surfactant for pigment dispersion; 0.1 to 0.3 parts by weight of non-silicone antifoaming agent; And a thickener of 0.6 to 1.3 parts by weight; is achieved by the surface lubricating agent composition used in the hot and warm forging process comprising a.

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In the present invention, the pigment dispersion surfactant, polyethylene glycol, polypropylene glycol, polyethylene glycol nonyl (or octyl) phenyl ether, polypropylene glycol nonyl (or octyl) phenyl ether, polyethylene glycol nonyl (or octyl) phenyl ether and Block copolymers of polypropylene glycol nonyl (or octyl) phenyl ethers, sodium dioctyl sulfosuccinate, polyethylene glycol alkyl ethers, polyethylene glycol patty acid esters, sodium dioctyl sulfosuccinate are used in combination .

According to the surface lubricating agent composition used in the hot and warm forging process of the present invention as described above, it has the following effects.

First, the sedimentation stability and anti-foaming power is excellent, the volatility of the pigment is very low during the forging operation, it can improve the lubricity of the forging product and the mold.

Secondly, it prevents sintering, has excellent physical properties such as oxidation resistance, high strength, and corrosion resistance of the forging, and can obtain a high-precision product.

Third, it is excellent in extending the life of the mold by the protection of the mold and the rust resistance of the forged product, and has stability and lubricity even at a high temperature of 500 to 1300 ° C.

Hereinafter, with reference to the accompanying drawings will be described in detail the surface lubricant treatment composition used in the hot and warm forging process according to a preferred embodiment of the present invention.

The terms or words used below should not be construed as being limited to ordinary or dictionary meanings, and the inventors can properly define the concept of terms in order to explain their invention in the best way. It should be interpreted as meanings and concepts corresponding to the technical spirit of the present invention.

The present invention comprises an inorganic adhesive, an inorganic lubricant, a pigment dispersion surfactant, and the remaining purified water (solvent) in order to achieve the object as described above.

In the present invention, a silicate is used as the inorganic adhesive or coating agent. In this case, in the present invention, as the silicate, potassium silicate, lithium silicate, potassium potassium silicate, sodium silicate ( Meta sodium silicate) was used.

The silicate is based on 47% by weight of the product, the amount used is based on 100 parts by weight of water, and then given a blending amount of the additives, the mixing ratio thereof is based on 100 parts by weight of water from 10 to 30 parts by weight of silicate It is wealth.

The inorganic lubricant is molybdenum disulfide, graphite, the particle size is made of fine powder of 300 mesh or more, one or more kinds can be mixed and used, each addition amount is in the ratio of 1.0 to 90 parts by weight. Of course, the amount of inorganic lubricant added is also based on 100 parts by weight of water as in the silicate.

     The pigment dispersion surfactant is mainly used anionic and nonionic surfactants, for example, polyethylene glycol, polypropylene glycol, polyethylene glycol nonyl (or octyl) phenyl ether (polyethylene) glycol nonyl (or octyl) phenyl ether, polypropylene glycol nonyl (or octyl) phenyl ether, polyethylene glycol nonyl (or octyl) phenyl block copolymers of polypropylene glycol nonyl (or octyl) phenyl ether, sodium dioctyl sulfosuccinate, polyethylene glycol alkyl ether ( Polyethylene glycol allkyl ether, Polyethylene glycol fatty acid ester, Sodium Octyl sulfonate levels carbonate (Sodium dioctyl sulfosuccinate) and in amount of 0.1 to 5 parts by weight based on 100 parts by weight of water to be used for one or the pigment dispersing surfactants for mixing later.

The purified water can be used alone, the total solid content is prepared by diluting to 5 to 45% by weight using purified water.

After preparing the aqueous lubricant composition for hot and warm forging as described above, and performing surface treatment such as degreasing or shorting or sanding the forging material, preheating, applying the lubricant, and then performing four steps of drying. Heat treatment to forge the hot forging.

     The lubricating agent according to the present invention uses an aqueous lubricating agent in which 5 to 45% by weight of total solids are dispersed, and by depositing or spraying the lubricating agent, the surface area of the forged material, that is, about 40 to 80 g / m 2 It is preferable to apply | coat to the surface of a raw material so that it may become a weight. At this time, the adhesion amount of the lubricating component after drying reaches about 10 ~ 20g / ㎡.

     Therefore, the new lubricating agent used in the present invention is a lubricating agent concentrate for lubricating agent blending for hot forging of metals, and satisfies the hot forging with high strain rate, and is basically water-based so that it is easy to protect the environment, workplace hygiene, and after forging. It is possible to provide a product to be removed.

The present invention will be described in more detail with reference to the following Examples.

[Example 1-5]

Purified water is added to a stirring vessel at room temperature in the amounts shown in Table 1 below, a dispersant is added thereto to dissolve to obtain a homogeneous solution, and a premixed inorganic lubricant is gradually added thereto to disperse sufficiently.

      Next, slowly add the silicate and apply heat to about 40 ~ 80 ℃ to disperse the inorganic lubricant sufficiently.

      Subsequently, the homogeneous solution is forcibly dispersed in the dissol bar for 2 hours using zirconium beads or glass beads to sufficiently disperse the pigment, and then the surface of the lubricating solution is heated to room temperature or about 70 to 90 ° C. The forging material is deposited or sprayed and applied to the surface of the material so as to have a surface area of the forging material, that is, a weight of about 40.0 to 80.0 g / m 2, followed by hot air drying to complete the application of the forging lubricant.

      After confirming the sedimentation stability and defoaming force of the lubricating agent prepared as described above, the surface condition of the lubricated forging and the salt spray test and the lubrication and pigment volatility at the time of forging were evaluated to make Table 1 below. The coating condition, lubricity and pigment volatility were all excellent in the forging test.

Example 1 Example 2 Example 3 Example 4 Example 5 Comparative Example * standard
(Parts by weight) Manufacturing compounding ratio (part) Purified water 100 100 100 100 100 Lubricating oil
coating 100 solvent Triton X-100 0.1 0.4 5.0 0.2 2.5 0.1 ~ 5.0 Dispersant BYK-024 * 2 0.1 0.2 0.3 0.2 0.1 0.1-0.3 Antifoam Silicate
(47%) Potassium silicate

20 Lithium silicate
15 Sodium metasilicate
20 Meta
Potassium silicate
15 Silicic acid
salt
25 10-30 glue MoS2 15 25 20 1-90 Inorganic
slush black smoke 10 20 1.5 30 carbon 10 1.0 Alcoprint-PTF
* 3 1.5 1.3 0.6 1.0 0.8 0.5-1.5 Thickener Solid content 21/132
= 15.9 24/132
= 18.2 70/181
= 38.7 11/119
= 9.2 65/178
= 36.5 5 ~ 45 weight% Total (%) 132 132 181 119 178 Property evaluation result Solid content (%) 15.9 18.2 38.7 9.2 36.5 5 ~ 45 weight% Leveling coating property Great Great Great Great Great Good Good or better Visual observation Lubricity Great Great Great Great Great Bad Good or better Forging observation Sedimentation Stability Great Great Great Great Great Pigmentless Good or better Visual observation Parcel time (minutes) Within 5 minutes Within 6 minutes Within 3 minutes Within 9 minutes Within 10 minutes Within 3 minutes Visual observation Pigment volatility Great Great Great Great Great Pigmentless Good or better Forging observation

*: Commercially purchased lubricant (oil)

* 1: Triton X-100: Polyethylene glycol octyl phenyl ether / Triton USA

* 2: BYK-024: Non-silicone Defoamer / BYK of Germany

* 3: Alcoprint PTF: Alcoprint, Germany

Claims (4)

Per 100 parts by weight of purified water, 15 to 25 parts by weight of a silicate of one of lithium silicate, potassium metasilicate, sodium metasilicate and sodium silicate as an inorganic adhesive or coating agent; 2.5 to 55 parts by weight of an inorganic lubricant used by mixing at least one of molybdenum disulfide, graphite and carbon; 0.2 to 5 parts by weight of a surfactant for pigment dispersion; 0.1 to 0.3 parts by weight of non-silicone antifoaming agent; And 0.6 to 1.3 parts by weight of thickener; surface lubricant treatment composition used in the hot and warm forging process comprising a. delete delete The method of claim 1, The pigment dispersion surfactant, Blocks of polyethylene glycol, polypropylene glycol, polyethylene glycol nonyl (or octyl) phenyl ether, polypropylene glycol nonyl (or octyl) phenyl ether, polyethylene glycol nonyl (or octyl) phenyl ether and polypropylene glycol nonyl (or octyl) phenyl ether Used by mixing one or more of copolymers, sodium dioctyl sulfosuccinate, polyethylene glycol alkyl ethers, polyethylene glycol patty acid esters, sodium dioctyl sulfosuccinate Surface lubricant treatment composition used in the hot and warm forging process, characterized in that.