CN1127789A - Coating for preventing high-carbon steel billet from being oxidized and decarbonized by heating - Google Patents
Coating for preventing high-carbon steel billet from being oxidized and decarbonized by heating Download PDFInfo
- Publication number
- CN1127789A CN1127789A CN 95100279 CN95100279A CN1127789A CN 1127789 A CN1127789 A CN 1127789A CN 95100279 CN95100279 CN 95100279 CN 95100279 A CN95100279 A CN 95100279A CN 1127789 A CN1127789 A CN 1127789A
- Authority
- CN
- China
- Prior art keywords
- coating
- carbon steel
- steel billet
- heating
- preventing
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
- 238000000576 coating method Methods 0.000 title claims abstract description 26
- 239000011248 coating agent Substances 0.000 title claims abstract description 25
- 229910000677 High-carbon steel Inorganic materials 0.000 title claims abstract description 13
- 238000010438 heat treatment Methods 0.000 title description 7
- 239000000463 material Substances 0.000 claims abstract description 22
- 159000000000 sodium salts Chemical class 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 4
- 239000004927 clay Substances 0.000 claims abstract description 4
- 239000011521 glass Substances 0.000 claims abstract description 4
- 238000002156 mixing Methods 0.000 claims abstract 2
- 238000005261 decarburization Methods 0.000 claims description 11
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 5
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims description 3
- 239000001103 potassium chloride Substances 0.000 claims description 3
- 235000011164 potassium chloride Nutrition 0.000 claims description 3
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 2
- 239000010439 graphite Substances 0.000 claims description 2
- 229910002804 graphite Inorganic materials 0.000 claims description 2
- 239000005368 silicate glass Substances 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 abstract description 14
- 239000010959 steel Substances 0.000 abstract description 14
- 230000003647 oxidation Effects 0.000 abstract description 9
- 238000007254 oxidation reaction Methods 0.000 abstract description 9
- 238000005096 rolling process Methods 0.000 abstract description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052742 iron Inorganic materials 0.000 abstract description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical class O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 1
- 238000005262 decarbonization Methods 0.000 abstract 1
- 238000009776 industrial production Methods 0.000 abstract 1
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 abstract 1
- 229910052782 aluminium Inorganic materials 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000004411 aluminium Substances 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 239000011253 protective coating Substances 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000003064 anti-oxidating effect Effects 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910001339 C alloy Inorganic materials 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000003618 dip coating Methods 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 229910052604 silicate mineral Inorganic materials 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Landscapes
- Heat Treatment Of Steel (AREA)
Abstract
A coating for preventing the thermal oxidation of iron and steel materials is especially suitable for preventing the thermal oxidation and decarbonization of high-carbon steel blank. It is composed of carbonaceous silica gel salt ore, glass, sodium salt and/or potassium salt and clay, and water is used as blending agent. The coating has the advantages of obvious and stable high-temperature resistance and oxidation resistance, safe and simple use, low cost, no pollution, complete self-stripping of the coating after billet rolling, and easy popularization and application in industrial production.
Description
The present invention relates to the method for ferrous materials heated protective, particularly relate to and prevent high-carbon steel billet heated oxide and decarburization.
Ferrous materials exposes under the oxidizing atmosphere condition and heats, and inevitably oxidation will take place.The general oxidational losses of Steel Plant's steel in the operation of rolling is 3% or more, loses huge.For high carbon steel, also there is the decarburization that produces the top layer simultaneously in the ground that more looms large, directly influences the end properties index.For guaranteeing its performance, Steel Plant adopt the measure that strips off the skin usually, and not only financial loss is big, and end properties is also unstable.Therefore, prevent the ferrous materials heated oxide, particularly prevent the heated oxide and the decarburization of high-carbon steel billet, be a great technical barrier in Steel Plant's production technique always.
Adopting the coating protection technology, is effective measure that address the above problem.The ultimate principle of coating protection is that the isolated oxidation heating atmosphere of the viscous state protective layer that tightly invests steel billet (material) surface that relies on high temperature to form down realizes; It should realize the purpose of anti-oxidation effectively, and assurance is not infiltrated harmful element or embedded inside and the surface quality that influences finished product in the steel because of the improper Xiang Gangzhong of causing of coating self performance again.
Around the heating coating protection of ferrous materials, each state all forms at the material of development research coating energetically, and particularly rolling material with coating is formed.For example; Brauburn factory of continent Iron And Steel Company; development is used for the supercoat on the high-carbon alloy steel; utilize the molten metal aluminium powder to be sprayed at hot rolling behind the billet surface, though the degree of depth of decarburization and zone of oxidation can on average reduce by 70%, the investment of this processing unit is big; costing an arm and a leg of metallic aluminium powder; safety assurance difficulty in particularly using is big, has greatly hindered this working of an invention, particularly industry and has applied.
In Japan; developed the heated protective coating that much is used for different steel class, particularly high carbon steel, its chemical constitution all adopts the essentially consist pattern of " refractory powder-silicon and compound-synthetic mica-interfacial agent-binding agent " or " refractory materials-silicon-dioxide-aluminium powder-synthetic mica-interfacial agent-binding agent ".These protective coatings, not only the constituent element complexity is restive, the prior back (after being heating rolling) that is to use, coating can not realize fully peeling off voluntarily, must be by high pressure water washing.In the Soviet Union, developed the heated protective coating that is used for the steel class, also exist in various degree coating in hot procedure to the corrosion on steel billet (material) surface and problem such as be difficult to realize fully peeling off voluntarily.
Domestic ferrous materials heating coating resist technology exploitation is not seen as yet about overcoming above-mentioned in-problem report, particularly about preventing the report of high carbon steel heated oxide and decarburization.
Purpose of the present invention is to provide a kind of and prevents the ferrous materials heated oxide, particularly prevents the supercoat material of high-carbon steel billet heated oxide and decarburization, and it has easy to operate and safe, result of use stably, characteristics such as pollution-free and low price.
A kind of ferrous materials heated oxide, supercoat material that particularly prevents high-carbon steel billet heated oxide and decarburization of preventing provided by the invention is meant: material is based on the carbon containing silicate minerals; add an amount of glass, sodium salt and (or) sylvite, clay, water is in harmonious proportion and forms.
A kind of ferrous materials heated oxide, supercoat material that particularly prevents high-carbon steel billet heated oxide and decarburization of preventing provided by the invention is:
Chemical composition of paint (wt%) is: C3-15%, SiO
240-53, CaO 10-21%, Al
2O
37-15%, R
2O 2.5-6.5%, residual amount 1-3%;
The material of coating consists of: in or low-carbon-content graphite ore deposit 40-75%, Boroalumino silicate glasses 0-34%, soda glass 0-34%, sodium salt (or) sylvite 0-15%, clay 4-10% granularity 100-250 order; The water concocting that adds 1.5-2.5 times (weight ratio) forms.
With protective cover provided by the invention, adopt brushing, dip-coating or spraying coating process, be coated with and invest rolling ferrous materials to be heated, particularly high-carbon steel billet surface (consumption is 0.3-0.5KG/M
2), heating rolling can be prevented oxidation and decarburization effectively then, coating can realize peeling off fully in process of cooling from base material surface.
Through Hubei Province Patent Administration Bureau to external 1963 so far, new patent searching retrieval so far in domestic 1985, finding no with the present invention has the relevant report of essence.The present invention has begun industrialness and has used in batches, technology and obvious economic.
Embodiment 1:
Measured high carbon bearing steel adopts the anti-oxidation of the present invention in 430 unit heat-processedes effect; and with not adopting the coating protection person compares, be 2-5 hour total heat-up time, 1230 ℃ of maximum heating temperatures; 30 minutes high temperature section residence time, contrast effect such as following table:
| Coating oxidation skin depth not, mm | The coating oxidation skin depth, mm | Reduced rate % |
| 2.07，2.36，2.15 | ?1.06，1.07，1.08 | ????50.2 |
| ??????2.15 | ???????1.07 |
(molecule is a measured value, and denominator is a mean value)
Embodiment 2: the industrialness of high carbon bearing steel is just used the result in batches.
180 * 180mm unit base is coated this coating, and cogging becomes 45 * 45 square billets on 430 milling trains, rolls into 12 and 14 garden steel through 250 milling trains again.Comparing result such as following table:
| Heat (batch) number | Specification (mm) | Roll the attitude Decarburized layer, mm | The annealed state Decarburized layer, mm | ||||
| Be coated with | Be not coated with | Reduce % | Be coated with | Be not coated with | Reduce % | ||
| 38D772 | ?∮12 | ?0.052-0.116 | ?0.098-0.145 | ?????31.6 | ?0.11-0.14 | ???0.16-0.16 | ????27.5 |
| ?????0.08 | ????0.117 | ????0.116 | ????0.16 | ||||
| 37D705 | ?∮12 | ?0.081-0.116 | ?0.139-0.261 | ?????55.4 | ?0.05-0.08 | ???0.18-0.18 | ????68.8 |
| ?????0.095 | ????0.213 | ????0.056 | ????0.18 | ||||
| 38A7529 | ?∮14 | ?0.041-0.105 | ?0.116-0.145 | ????42.4 | ?0.11-0.14 | ???0.14-0.20 | ????25.6 |
| ?????0.072 | ????0.125 | ????0.122 | ????0.164 | ||||
(molecule is the measured value scope, and denominator is a mean value)
Adopt coating provided by the invention, coating all realizes peeling off fully after steel billet rolls, to the surface and the not influence of internal soundness of steel.1800 yuan of coating provided by the invention valencys per ton, consumption is 0.3-0.5KG/M
2, contrast above effect, can easily find out distinct economic.
Claims (1)
- A kind ofly be used to prevent ferrous materials, particularly prevent the coating of high-carbon steel billet heated oxide and decarburization, it is characterized in that, the material of this coating form be in or low-carbon-content graphite ore deposit 40-75%, Boroalumino silicate glasses 0-34%, soda glass 0-34%, sodium salt and (or) sylvite 0-13%, clay 4-10%, use water as blending agents.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95100279 CN1127789A (en) | 1995-01-27 | 1995-01-27 | Coating for preventing high-carbon steel billet from being oxidized and decarbonized by heating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95100279 CN1127789A (en) | 1995-01-27 | 1995-01-27 | Coating for preventing high-carbon steel billet from being oxidized and decarbonized by heating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1127789A true CN1127789A (en) | 1996-07-31 |
Family
ID=5073360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95100279 Pending CN1127789A (en) | 1995-01-27 | 1995-01-27 | Coating for preventing high-carbon steel billet from being oxidized and decarbonized by heating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1127789A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100453604C (en) * | 2002-12-20 | 2009-01-21 | 鞍钢股份有限公司 | A coating for preventing decarburization of high carbon billets |
| CN101225457B (en) * | 2007-12-14 | 2010-08-11 | 武汉钢铁(集团)公司 | Steel billet coating material |
| CN102180693A (en) * | 2011-03-14 | 2011-09-14 | 高庆昌 | High-absorptivity coating for resisting oxidation and decarburization of steel billet and preparation method thereof |
| CN103276169A (en) * | 2013-04-26 | 2013-09-04 | 上海钫淦冶金科技有限公司 | Nano-isolation agent for preventing high-temperature surface oxidation of stainless steel |
| CN105177244A (en) * | 2015-08-28 | 2015-12-23 | 济南昊泽环保科技有限公司 | Decarbonization preventing paint for workpiece |
-
1995
- 1995-01-27 CN CN 95100279 patent/CN1127789A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100453604C (en) * | 2002-12-20 | 2009-01-21 | 鞍钢股份有限公司 | A coating for preventing decarburization of high carbon billets |
| CN101225457B (en) * | 2007-12-14 | 2010-08-11 | 武汉钢铁(集团)公司 | Steel billet coating material |
| CN102180693A (en) * | 2011-03-14 | 2011-09-14 | 高庆昌 | High-absorptivity coating for resisting oxidation and decarburization of steel billet and preparation method thereof |
| CN103276169A (en) * | 2013-04-26 | 2013-09-04 | 上海钫淦冶金科技有限公司 | Nano-isolation agent for preventing high-temperature surface oxidation of stainless steel |
| CN103276169B (en) * | 2013-04-26 | 2014-08-27 | 上海钫淦冶金科技有限公司 | Nano-isolation agent for preventing high-temperature surface oxidation of stainless steel |
| CN105177244A (en) * | 2015-08-28 | 2015-12-23 | 济南昊泽环保科技有限公司 | Decarbonization preventing paint for workpiece |
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| PB01 | Publication | ||
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| AD01 | Patent right deemed abandoned | ||
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |