CN102703203B - Core rod surface graphitic lubricant in rolling process of high-alloy steel pipe and preparation method - Google Patents
Core rod surface graphitic lubricant in rolling process of high-alloy steel pipe and preparation method Download PDFInfo
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- CN102703203B CN102703203B CN 201210231085 CN201210231085A CN102703203B CN 102703203 B CN102703203 B CN 102703203B CN 201210231085 CN201210231085 CN 201210231085 CN 201210231085 A CN201210231085 A CN 201210231085A CN 102703203 B CN102703203 B CN 102703203B
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Abstract
The invention discloses a core rod surface graphitic lubricant in the rolling process of a high-alloy steel pipe and a preparation method, belonging to the field of high-alloy steel pipe rolling technology. The core rod surface graphitic lubricant consists of a composite adhesive, a film forming agent, a dispersing agent, an anti-foaming agent, a thickening agent, a mildew-proof agent, an emulsifier and water, wherein the solid phase accounts for 30-35% of the graphitic lubricant by mass, and water accounts for 65-70% by mass; and the solid phase comprises the following components in percentage by mass: 60-70% of graphite, 20-30% of compound adhesive, 3-5% of film forming agent, 0.5-2% of dispersing agent, 0.5-2% of anti-foaming agent, 0.5-2% of thickening agent, 0.5-2% of mildew-proof agent and 0.5-2% of emulsifier. The graphite is high-purity flaky graphite of which the purity is over 99% and the particle size is 200-600 meshes. Through the invention, the graphitic lubricant has good low-temperature film forming property as well as high high-temeprature adhesion and suspension dispersity; and moreover, the graphitic lubricant has moderate cost and high cost performance and is suitable for the popularization and application in the rolling process of high-alloy steel.
Description
Technical field
The invention belongs to high alloy steel pipe rolling technical field, mandrel surface oildag and preparation method in a kind of high alloy steel pipe operation of rolling particularly is provided.
Background technology
In seamless steel tube production process, the pipe that heats in ring furnace is earlier made hollow hollow billet through perforation, and then hollow billet is delivered to continuous mill penetrates plug and be rolled.Mandrel surface applies the frictional coefficient of oildag can reduce the core rod type slitless tube mill and carry out drawing/rolling the time, improves plug work-ing life and reduces the generation of the defect in inner surface of steel pipe.
After the rolling beginning, along with organism decomposes, graphite burning produces a large amount of gases, it is lubricated to produce solid phase and gas phase.But for high quality steel, the hollow billet internal surface area increases nearly 2-3 doubly, increases the newborn face of major part.The common graphite lubricant can not supply on the newborn face of hollow forging continuously, and solid lubrication can not guarantee its continuity, causes the discontinuous adhesive wear between newborn face and the plug, so rolling load is higher, and the plug serious wear.Make steel pipe internal-surface produce defectives such as scuffing and crackle simultaneously, reduced the lumber recovery of steel pipe.
Summary of the invention
The object of the present invention is to provide mandrel surface oildag and preparation method in a kind of high alloy steel pipe operation of rolling, solved in the high quality steel operation of rolling the high and plug wear problems of restraint power, raising steel pipe internal-surface quality and plug work-ing life.
The mandrel surface oildag is made up of graphite, composite adhesive, membrane-forming agent, dispersion agent, defoamer, thickening material, mould inhibitor, emulsifying agent and water in the high alloy steel pipe operation of rolling of the present invention, wherein, the massfraction 30%-35% of solid load in the described oildag, the massfraction 65%-70% of water.Wherein, each constituent mass percentage composition is as follows in the solid phase:
Graphite: 60%-70%, composite adhesive content: 20-30%, membrane-forming agent 3-5%, dispersion agent: 0.5%-2%, defoamer: 0.5%-2%, thickening material: 0.5%-2%, mould inhibitor: 0.5%-2%, emulsifying agent: 0.5%-2%.Described graphite is high-purity flaky graphite, and purity is more than 99%, and granularity is between the 200-600 order.
Further, described oildag uses composite adhesive, and composite adhesive is made up of acrylic acid or the like, vinyl acetate between to for plastic class binding agent and compounded mix, has high strength and fast dry characteristics, can significantly improve lubricity and demolding performace.
The preparation technology of above-mentioned oildag is as follows:
(1) compound binding agent preparation: vinylformic acid, vinyl acetate between to for plastic binding agent and compounded mix are according to 3:1:3 ratio preparation composite adhesive;
(2) partial material is molten in advance: with content in the composite adhesive 20-30%(solid phase) and membrane-forming agent 3-5%(solid phase in content), content in the defoamer 0.5%-2%(solid phase) in 60-70
oMolten in advance in the C hot water (end product quality 65%-70%);
(3) graphite raw material screening: high purity graphite guarantees that through screening granularity is between the 200-600 order;
(4) oildag preparation: content in the graphite 60%-70%(solid phase after will sieve), content in the emulsifying agent 1%(solid phase), dispersion agent: content in the 0.5%-2%(solid phase), thickening material: content in the 0.5%-2%(solid phase), mould inhibitor: content in the 0.5%-2%(solid phase) all join and mix stirring 50min-60min in the pre-molten material of step (2), cross colloidal mill, make oildag.
The invention has the advantages that the use composite adhesive, membrane-forming agent and high quality steel rolling technology are complementary, both guarantee the film formation at low temp performance that oildag is good, and can guarantee its good high-temperature sticking power and suspended dispersed again, avoided solid lubricant particle sedimentation and ununiformity.Preparation technology has guaranteed granularity, gelatinizing degree, the rolling demand of suspending stabilized sexual satisfaction high quality steel, and cost is moderate, and the cost performance height suits to apply in the high quality steel operation of rolling.
Embodiment
Embodiment: 1 kilogram of preparation oildag.
1. starting material
Flaky graphite: purity is not less than 99%; Granularity is between the 200-600 order.
2, preparation technology is as follows:
(1) vinylformic acid, vinyl acetate between to for plastic binding agent and compounded mix are according to 3:1:3 ratio preparation composite adhesive;
(2) 82.4 gram composite adhesives and 9.9 gram membrane-forming agents, 3.3 are restrained defoamers, in 65
oMolten in advance in C hot water 670 grams;
(3) high purity graphite guarantees that through screening granularity is between the 200-600 order;
(4) 221.1 grams of the graphite after will sieving and emulsifying agent 3.3 grams, dispersion agent 3.3 grams, thickening material 3.3 grams, mould inhibitor 3.3 grams add to mix in the pre-molten material of step (2) and stirred 60 minutes, cross colloidal mill, make 1 kilogram of oildag.
Solid load in the oildag: water-content 33%: 67%; Each component concentration is in the solid load:
Content of graphite: 67%, composite adhesive content: 25%, membrane-forming agent 3%, defoamer: 1%, dispersion agent: 1%, thickening material: 1%, mould inhibitor: 1%, emulsifying agent: 1%.
Claims (1)
1. mandrel surface oildag in the high alloy steel pipe operation of rolling, it is characterized in that, formed by graphite, composite adhesive, membrane-forming agent, dispersion agent, defoamer, thickening material, mould inhibitor, emulsifying agent and water, wherein, the massfraction 30%-35% of solid load in the described oildag, the massfraction 65%-70% of water; Wherein, each constituent mass percentage composition is as follows in the solid phase:
Graphite: 60%-70%, composite adhesive content: 20-30%, membrane-forming agent 3-5%, dispersion agent: 0.5%-2%, defoamer: 0.5%-2%, thickening material: 0.5%-2%, mould inhibitor: 0.5%-2%, emulsifying agent: 1%;
Described graphite is high-purity flaky graphite, and purity is more than 99%, and granularity is between the 200-600 order;
Described oildag uses suitable coating thickness to be 80-150g/m
2, spraying temperature 80-150
oC; Its preparation technology is as follows:
(1) composite adhesive preparation: vinylformic acid, vinyl acetate between to for plastic binding agent and compounded mix are according to 3:1:3 ratio preparation composite adhesive;
(2) partial material is molten in advance: with content in content, the defoamer 0.5%-2% solid phase in content in the composite adhesive 20-30% solid phase and the membrane-forming agent 3-5% solid phase in 60-70
oMolten in advance in the C hot water;
(3) graphite screening: high purity graphite guarantees that through screening granularity is between the 200-600 order;
(4) oildag preparation: content, dispersion agent in content, emulsifying agent 1% solid phase in the graphite 60%-70% solid phase after will sieve: content, thickening material in the 0.5%-2% solid phase: content, mould inhibitor in the 0.5%-2% solid phase: content all joins and mixes stirring 50min-60min in the pre-molten material of step (2) in the 0.5%-2% solid phase, cross colloidal mill, make oildag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210231085 CN102703203B (en) | 2012-07-05 | 2012-07-05 | Core rod surface graphitic lubricant in rolling process of high-alloy steel pipe and preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210231085 CN102703203B (en) | 2012-07-05 | 2012-07-05 | Core rod surface graphitic lubricant in rolling process of high-alloy steel pipe and preparation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102703203A CN102703203A (en) | 2012-10-03 |
| CN102703203B true CN102703203B (en) | 2013-08-21 |
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| CN 201210231085 Active CN102703203B (en) | 2012-07-05 | 2012-07-05 | Core rod surface graphitic lubricant in rolling process of high-alloy steel pipe and preparation method |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1405286A (en) * | 2001-08-13 | 2003-03-26 | 衡阳市高新技术金化实业有限责任公司 | Water-based graphite core rod lubricant |
| CN101333475A (en) * | 2007-06-25 | 2008-12-31 | 衡阳市金化科技有限公司 | Water-based central graphite rod lubricant |
| CN102093927A (en) * | 2010-12-03 | 2011-06-15 | 无锡润鹏复合新材料有限公司 | Graphite-oxide composite solid lubricant for hot-rolled seamless steel pipe and preparation method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005056740A1 (en) * | 2003-12-10 | 2005-06-23 | Sumitomo Metal Industries, Ltd. | Lubricant composition for hot forming |
-
2012
- 2012-07-05 CN CN 201210231085 patent/CN102703203B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1405286A (en) * | 2001-08-13 | 2003-03-26 | 衡阳市高新技术金化实业有限责任公司 | Water-based graphite core rod lubricant |
| CN101333475A (en) * | 2007-06-25 | 2008-12-31 | 衡阳市金化科技有限公司 | Water-based central graphite rod lubricant |
| CN102093927A (en) * | 2010-12-03 | 2011-06-15 | 无锡润鹏复合新材料有限公司 | Graphite-oxide composite solid lubricant for hot-rolled seamless steel pipe and preparation method thereof |
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| CN102703203A (en) | 2012-10-03 |
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