CN104017421A - Aqueous titanium ingot high temperature oxidation resistant paint and application thereof and titanium ingot production method - Google Patents
Aqueous titanium ingot high temperature oxidation resistant paint and application thereof and titanium ingot production method Download PDFInfo
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- CN104017421A CN104017421A CN201410235875.XA CN201410235875A CN104017421A CN 104017421 A CN104017421 A CN 104017421A CN 201410235875 A CN201410235875 A CN 201410235875A CN 104017421 A CN104017421 A CN 104017421A
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Abstract
The invention discloses an aqueous titanium ingot high temperature oxidation resistant paint prepared by evenly mixing a raw material mixture, the raw material mixture contains an oxidation protective agent, a water soluble film-forming agent and water; the oxidation protective agent contains Al powder, Zn powder, Sn powder and Cu powder, the weight ratio of Al powder to Zn powder to Sn powder to Cu powder is 1:0.01-0.1:0.01-0.1:0.01-0.1. The invention also discloses the application of the aqueous titanium ingot high temperature oxidation resistant paint in titanium ingot production and a titanium ingot production method. The aqueous titanium ingot high temperature oxidation resistant paint can guarantee that titanium ingot surface cannot be oxidized to crack at a constant high temperature of 1000 DEG C for 8h, can greatly reduce the formation of a dissolved oxygen layer, has the environmental protection function, and is simple in the preparation process, and a variety of coating methods can be used. The titanium ingot production method has broad popularization and application prospects in titanium plate and titanium tube production.
Description
Technical field
The present invention relates to high-temperature-resistant coating for metal field, particularly, relate to a kind of water-based titanium ingot high-temperature oxidation resistant coating, and the application of this water-based titanium ingot high-temperature oxidation resistant coating in titanium ingot is produced, and a kind of production method of titanium ingot.
Background technology
Titanium ingot is generally wanted annealed processing in process of production, annealing generally will be carried out under the high temperature of 900 DEG C of left and right, and at high temperature, oxygen can enter titanium ingot surface, forming hard dissolved oxygen layer, will there is the deep torn grain of degree of depth 20mm left and right in titanium ingot with upper surface at 900 DEG C of heating 4h.For ensureing the follow-up rolling of titanium pipe and the surface quality of hot rolling titanium plate, in the operation of rolling, need titanium ingot to cut and grinding process, to remove crackle and dissolved oxygen layer, loss is larger like this.Because titanium ingot is to be made by titanium sponge reaction, the cracking part of titanium ingot in heat-processed and dissolved oxygen layer are removed, have a strong impact on cost and the lumber recovery of titanium material, therefore need titanium ingot to carry out high temperature protection.
Titanium ingot is carried out to high temperature protection, according to the study titanium surface platinum ion electroplate can protect titanium 650 DEG C not oxidized, but can not meet the high temperature requirement of annealing far away; The MCrAlY alloy with outstanding oxidation-resistance by spray or evaporation coating to titanium matrix, but this also exist form with titanium that congruent melting compound increases and titanium production heat-processed in the formation problem of phase diffusion layer; When traditional anti-oxidation protection Paint Boron silicate glass base coating applies to titanium, the formation of oxide compound is had certain effect, but can not reach the object that prevents that dissolved oxygen layer from forming.Current useful aluminium, as the aluminium base oxidation protection coating of oxidation inhibitor, for titanium, the formation of oxide compound and dissolved oxygen layer is had certain effect, but effect is still undesirable, and because viscosity is lower, when use, can only be sprayed, and can not brush, and has limited its application.
Therefore, need one can effectively prevent that titanium ingot surface dissolved oxygen layer and crackle from forming, thereby greatly reduce the water-based titanium ingot high-temperature oxidation resistant coating of titanium ingot production cost.
Summary of the invention
The object of the invention is, in order to overcome existing water-based titanium ingot high-temperature oxidation resistant coating to the dissatisfactory defect of the protection of titanium ingot, provides the production method of a kind of new water-based titanium ingot high-temperature oxidation resistant coating and application and titanium ingot.
The present inventor finds under study for action, contain Al powder, Zn powder, Sn powder and Cu powder are as oxidation protection agent, and Al powder, Zn powder, the weight ratio of Sn powder and Cu powder is 1:0.01-0.1:0.01-0.1:0.01-0.1, the water-based titanium ingot high-temperature oxidation resistant coating obtaining after the raw mixture that contains this oxidation protection agent and water-soluble film forming agent and water mixes, can ensure titanium ingot not oxidized cracking in constant temperature 8h surface under 1000 DEG C of high temperature, and can greatly reduce the formation of dissolved oxygen layer, can effectively reduce production costs and improve productivity effect, and this water-based titanium ingot high-temperature oxidation resistant coating can adopt pneumatic spraying, vacuum spraying, the multiple coating methods such as brushing, easy to use.
Therefore, to achieve these goals, on the one hand, the invention provides a kind of water-based titanium ingot high-temperature oxidation resistant coating, after described water-based titanium ingot high-temperature oxidation resistant coating is mixed by a kind of raw mixture, obtain, described raw mixture contains oxidation protection agent, water-soluble film forming agent and water; Described oxidation protection agent contains Al powder, Zn powder, Sn powder and Cu powder, and the weight ratio of Al powder, Zn powder, Sn powder and Cu powder is 1:0.01-0.1:0.01-0.1:0.01-0.1.
Preferably, the weight ratio of Al powder, Zn powder, Sn powder and Cu powder is 1:0.02-0.04:0.02-0.04:0.02-0.04.
Second aspect, the invention provides the application of water-based titanium ingot high-temperature oxidation resistant coating as above in titanium ingot is produced.
The third aspect, the invention provides a kind of production method of titanium ingot, described method is included in titanium ingot carries out before anneal, and at the surface-coated water-based titanium ingot high-temperature oxidation resistant coating of titanium ingot, described water-based titanium ingot high-temperature oxidation resistant coating is water-based titanium ingot high-temperature oxidation resistant coating as above.
Water-based titanium ingot high-temperature oxidation resistant coating of the present invention, can ensure titanium ingot not oxidized cracking in constant temperature 8h surface under 1000 DEG C of high temperature, and can greatly reduce the formation of dissolved oxygen layer, can effectively reduce production costs, and improves lumber recovery and the production efficiency of titanium material.For example, to climb steel as example, rolling titanium section product, 10,000 tons of production capacities are produced in design per year, with 7.5 tons of calculating of each titanium ingot (semifinished product), will produce every year the titanium billet of 1300 left and right, and each titanium ingot is of a size of: thickness 0.28m, length 7.5m, width 1.25m; Each titanium ingot gross area is about 25m
2, the annual 32500m that approximately produces
2, the coat-thickness of water-based titanium ingot high-temperature oxidation resistant coating of the present invention is 0.2-0.4mm; Every square meter approximately uses 200-400g, annual approximately 6.5 tons-13 tons of the coating that use of accumulative total.There is zone of oxidation cracking 20mm depth calculation with each titanium ingot, each titanium ingot will machine away 100-200 kilogram, with 80000 yuan/ton of calculating of titanium ingot, each titanium ingot, because oxidation cutting tip is lost between 8000-16000 unit, meanwhile, also will spend a large amount of human and material resources and cut, extra increase production cost and production time, and adopt water-based titanium ingot high-temperature oxidation resistant coating of the present invention, the price of coating to calculate by 200 yuan/Kg, will save every year approximately 13,650,000 yuan of production costs.
Water-based titanium ingot high-temperature oxidation resistant coating of the present invention, does not contain the harmful element limiting in RoHS quality in coating, meanwhile, this water-based titanium ingot high-temperature oxidation resistant coating does not have toxic substance volatilization in air, does not affect environmental protection effect of construction environment etc.
Water-based titanium ingot high-temperature oxidation resistant coating preparation technology of the present invention is simple, on-the-spot preparation can use time, and the preparation time is short, simple possible; Also can prepare after production, at room temperature store, coating is stablized shelf-stability and can be reached more than 6 months, there will be precipitation, demixing phenomenon, and still, when use, shaking up or re-start stirring can use.
Water-based titanium ingot high-temperature oxidation resistant coating of the present invention, can adopt the multiple coating methods such as pneumatic spraying, vacuum spraying, brushing, easy to use.
The production method of titanium ingot of the present invention has good economic benefit and social benefit, in titanium plate and titanium pipe production industry, has comparatively wide popularizing application prospect.
Other features and advantages of the present invention are described in detail the embodiment part subsequently.
Brief description of the drawings
Fig. 1 is the photo of titanium ingot surface after embodiment 1 rolling.
Fig. 2 is the photo of titanium ingot surface after comparative example 1 rolling.
Fig. 3 is the photo of titanium ingot surface after comparative example 2 rollings.
Fig. 4 is the Hardness Distribution of titanium ingot surface after each embodiment and comparative example rolling.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is elaborated.Should be understood that, embodiment described herein only, for description and interpretation the present invention, is not limited to the present invention.
On the one hand, the invention provides a kind of water-based titanium ingot high-temperature oxidation resistant coating, after this water-based titanium ingot high-temperature oxidation resistant coating is mixed by a kind of raw mixture, obtain, raw mixture contains oxidation protection agent, water-soluble film forming agent and water; Oxidation protection agent contains Al powder, Zn powder, Sn powder and Cu powder, and the weight ratio of Al powder, Zn powder, Sn powder and Cu powder is 1:0.01-0.1:0.01-0.1:0.01-0.1.
According to the present invention, although this water-based titanium ingot high-temperature oxidation resistant coating obtains after being mixed by a kind of raw mixture, raw mixture contains oxidation protection agent, water-soluble film forming agent and water; Oxidation protection agent contains Al powder, Zn powder, Sn powder and Cu powder; the weight ratio of Al powder, Zn powder, Sn powder and Cu powder is 1:0.01-0.1:0.01-0.1:0.01-0.1; can realize object of the present invention; can ensure titanium ingot not oxidized cracking in constant temperature 8h surface under 1000 DEG C of high temperature; greatly reduce the formation of dissolved oxygen layer; and this water-based titanium ingot high-temperature oxidation resistant coating can adopt the multiple coating methods such as pneumatic spraying, vacuum spraying, brushing, easy to use.But under preferable case, the weight ratio of Al powder, Zn powder, Sn powder and Cu powder is 1:0.02-0.04:0.02-0.04:0.02-0.04, can further reduce the formation of dissolved oxygen layer.Therefore, preferably, the weight ratio of Al powder, Zn powder, Sn powder and Cu powder is 1:0.02-0.04:0.02-0.04:0.02-0.04.
In the present invention, for the content of Zn powder, Sn powder and Cu powder, can be identical, also can be different, as long as content is in above-mentioned ratio range.
In the present invention, with respect to the oxidation protection agent of 1 weight part, in solid, the consumption of water-soluble film forming agent is preferably 0.025-0.1 weight part, and the consumption of water is preferably 1-1.5 weight part.Under this preferable case, can make the pH value of water-based titanium ingot high-temperature oxidation resistant coating of the present invention is 7.5-9.5, and solid content is 85-90 % by weight, is directly coated in online titanium ingot surface, can solidify rapidly, form self-drying type coating, and because solid content is high, there will not be rete trickling phenomenon, coating tack is very good, no matter, in the time of wet film or dry film, coating tack can meet the needs of titanium ingot roller-way bobbing machine friction, there will not be coating scaling or dry linting phenomenon.
In the present invention, for water-soluble film forming agent without particular requirement, can adopt the conventional various water-soluble film forming agents in this area, for example, water-soluble film forming agent can be selected from least one in benzene emulsion, water-soluble polyester film-forming resin, water-soluble phenylpropyl alcohol film-forming resin, soluble epoxide film-forming resin, aqurous ployurethane film-forming resin, water-soluble silicon the third film-forming resin, water-soluble poly divinyl film-forming resin, water-soluble acrylic film-forming resin and water-soluble fluorine carbon film-forming resin.But the present inventor finds under study for action, in the time that water-soluble film forming agent is preferably benzene emulsion, can further reduce the formation of dissolved oxygen layer.Therefore, water-soluble film forming agent is preferably benzene emulsion, without particular requirement, can adopt the conventional benzene emulsion in this area for the solid content of benzene emulsion, and the solid content of benzene emulsion is preferably 40-60 % by weight.
In order further to improve the tack of water-based titanium ingot high-temperature oxidation resistant coating of the present invention at titanium ingot surface; raw mixture of the present invention preferably also contains one or more in solidifying agent, dispersion agent and thickening material; more preferably contain solidifying agent, dispersion agent and thickening material; with respect to the oxidation protection agent of 1 weight part; the consumption of solidifying agent is preferably 0.001-0.003 weight part; the consumption of dispersion agent is preferably 0.0005-0.001 weight part, and the consumption of thickening material is preferably 0.001-0.006 weight part.
In the present invention, without particular requirement, can adopt this area conventional various solidifying agent, dispersion agent, thickening material for solidifying agent, dispersion agent, thickening material concrete material separately.For example, solidifying agent can be SiO
2, dispersion agent can be polyvinyl alcohol, water-soluble polyethylene wax, Polyvinylpyrolidone (PVP), polyoxyethylene etc., thickening material can be methylcellulose gum, carboxymethyl cellulose, Natvosol, Vltra tears etc.
Without particular requirement, can adopt the conventional the whole bag of tricks in this area for the preparation method of water-based titanium ingot high-temperature oxidation resistant coating of the present invention, as long as each component is mixed.But the present inventor finds under study for action, adopts and prepares with the following method water-based titanium ingot high-temperature oxidation resistant coating, can make each component be mixed to get more even.Concrete grammar is: under agitation; oxidation protection agent is slowly added in water-soluble film forming agent, when the amount of oxidation protection agent adds a half, start slowly to add the water of 3-5%; and make to add together with the water of oxidation protection agent and 3-5%; and then add solidifying agent, stir, then add dispersion agent; stir; treat that liquid is uniform and stable phase, then add thickening material, after stirring, add remaining water.
Second aspect, the invention provides the application of water-based titanium ingot high-temperature oxidation resistant coating as above in titanium ingot is produced.
The third aspect, the invention provides a kind of production method of titanium ingot, the method is included in titanium ingot carries out before anneal, and at the surface-coated water-based titanium ingot high-temperature oxidation resistant coating of titanium ingot, water-based titanium ingot high-temperature oxidation resistant coating is water-based titanium ingot high-temperature oxidation resistant coating as above.
In the present invention, without particular requirement, can adopt the annealing treating process of this area routine for anneal, for example, annealing temperature is 800-1000 DEG C, and annealing time is 4-8h.
In the present invention, without particular determination, for example, can comprise pneumatic spraying, vacuum spraying, brushing etc. for the mode applying.
In the present invention, the thickness of the photopolymer layer that the amount that water-based titanium ingot high-temperature oxidation resistant coating applies forms after preferably making water-based titanium ingot high-temperature oxidation resistant coating solidify is 0.2-0.4mm.In the time that the thickness of photopolymer layer is less than 0.2mm, titanium ingot can not get sufficient high temperature protection, and in the time that the thickness of photopolymer layer exceedes 0.4mm, cost raises.
What those skilled in the art should understand that is, titanium ingot carries out will being rolled processing after anneal, for the condition of rolling processing without particular requirement, can adopt the normal condition of this area, for example, the condition of rolling comprises: after annealing, carry out the rolling of 10 passages, each percentage pass reduction is approximately 20mm.
Embodiment
The present invention is further illustrated for following embodiment, but therefore do not limit the present invention.
In the following Examples and Comparative Examples:
Titanium ingot: thickness 0.28m, length 7.5m, width 1.25m.
Determination of solid content method: GB-T2793-1995.
PH values determination method: adopt pH meter (being purchased from Shanghai INESA Scientific Instrument Co., Ltd., thunder magnetic PHSJ-5 type) to measure.
Titanium ingot surface measurement of hardness method: GB/T14235.5-1993.
Rolling is the rolling of carrying out 10 passages after annealing, and each percentage pass reduction is 20mm.
Embodiment 1
The present embodiment is for illustrating the production method of water-based titanium ingot high-temperature oxidation resistant coating of the present invention and titanium ingot.
(1), under normal temperature and pressure (25 DEG C, 0.1MPa), take 100g benzene emulsion (solid content 50 % by weight) and be placed in container;
(2) take 800g Al powder, 30g Zn powder, 20g Sn powder and 25g Cu powder, under agitation, slowly add in container, when the amount of Al powder, Zn powder, Sn powder and Cu powder adds a half, start slowly to add 50g water, and Al powder, Zn powder, Sn powder, Cu powder are added together with water;
(3) take 1g SiO
2, add in container, and stir;
(4) take 0.5g polyvinyl alcohol (being purchased from Qingdao An Mao International Trading Company Ltd, Z-200) and add in container, stir, treat that liquid is uniform and stable phase;
(5) take 1g carboxymethyl cellulose (being purchased from Hebei Xingtai Mierocrystalline cellulose company limited, XTHPMC10) and add in container, after stirring, add water and be settled to 1L, obtain water-based titanium ingot high-temperature oxidation resistant coating A1.
The solid content of measuring water-based titanium ingot high-temperature oxidation resistant coating A1 is that 89%, pH value is 8.4.
By water-based titanium ingot high-temperature oxidation resistant coating for A1 automatization spray gun (be purchased from Tianjin Tuo Bao Science and Technology Ltd., model: 006_1589, following examples and comparative example with) be sprayed at titanium ingot surface, the thickness of the photopolymer layer that the amount of spraying forms after water-based titanium ingot high-temperature oxidation resistant coating is solidified is 0.3mm, place at normal temperatures and pressures spontaneous curing after 5min, then titanium ingot is sent into annealing furnace, thermostatically heating 8h at 1000 DEG C, then be rolled, after rolling, Fig. 1 is shown in by the photo of titanium ingot surface, and the Hardness Distribution of titanium ingot surface is shown in Fig. 4.
Embodiment 2
The present embodiment is for illustrating the production method of water-based titanium ingot high-temperature oxidation resistant coating of the present invention and titanium ingot.
(1), under normal temperature and pressure (25 DEG C, 0.1MPa), take 54g benzene emulsion (solid content 40 % by weight) and be placed in container;
(2) take 800g Al powder, 16g Zn powder, 16g Sn powder and 16g Cu powder, under agitation, slowly add in container, when the amount of Al powder, Zn powder, Sn powder and Cu powder adds a half, start slowly to add 50g water, and Al powder, Zn powder, Sn powder, Cu powder are added together with water;
(3) take 1.7g SiO
2, add in container, and stir;
(4) take 0.68g Polyvinylpyrolidone (PVP) (being purchased from Guangzhou Ba Tai Chemical Co., Ltd., PVP K90) and add in container, stir, treat that liquid is uniform and stable phase;
(5) take 3.4g Natvosol (being purchased from Hebei Xingtai Mierocrystalline cellulose company limited, YLT-999) and add in container, after stirring, add water and be settled to 1L, obtain water-based titanium ingot high-temperature oxidation resistant coating A2.
The solid content of measuring water-based titanium ingot high-temperature oxidation resistant coating A2 is that 87%, pH value is 7.9.
Use automatization spray gun spraying in titanium ingot surface water-based titanium ingot high-temperature oxidation resistant coating A2, the thickness of the photopolymer layer that the amount of spraying forms after water-based titanium ingot high-temperature oxidation resistant coating is solidified is 0.2mm, place at normal temperatures and pressures spontaneous curing after 5min, then titanium ingot is sent into annealing furnace, thermostatically heating 4h at 900 DEG C, then be rolled, same Fig. 1 of the photo of titanium ingot surface after rolling, the Hardness Distribution of titanium ingot surface is shown in Fig. 4.
Embodiment 3
The present embodiment is for illustrating the production method of water-based titanium ingot high-temperature oxidation resistant coating of the present invention and titanium ingot.
(1), under normal temperature and pressure (25 DEG C, 0.1MPa), take 141g benzene emulsion (solid content 60 % by weight) and be placed in container;
(2) take 767g Al powder, 30g Zn powder, 30g Sn powder and 23g Cu powder, under agitation, slowly add in container, when the amount of Al powder, Zn powder, Sn powder and Cu powder adds a half, start slowly to add 50g water, and Al powder, Zn powder, Sn powder, Cu powder are added together with water;
(3) take 2.55g SiO
2, add in container, and stir;
(4) take 0.85g polyoxyethylene (be purchased from and attack green gram of novel material science and technology (Shanghai) Co., Ltd., PEO-5) and add in container, stir, treat that liquid is uniform and stable phase;
(5) take 5.1g Vltra tears (being purchased from Hebei Xingtai Mierocrystalline cellulose company limited, XT HPMC10) and add in container, after stirring, add water and be settled to 1L, obtain water-based titanium ingot high-temperature oxidation resistant coating A3.
The solid content of measuring water-based titanium ingot high-temperature oxidation resistant coating A3 is that 85%, pH value is 9.2.
Use automatization spray gun spraying in titanium ingot surface water-based titanium ingot high-temperature oxidation resistant coating A3, the thickness of the photopolymer layer that the amount of spraying forms after water-based titanium ingot high-temperature oxidation resistant coating is solidified is 0.4mm, place at normal temperatures and pressures spontaneous curing after 5min, then titanium ingot is sent into annealing furnace, thermostatically heating 6h at 800 DEG C, then be rolled, same Fig. 1 of the photo of titanium ingot surface after rolling, the Hardness Distribution of titanium ingot surface is shown in Fig. 4.
Embodiment 4
The present embodiment is for illustrating the production method of water-based titanium ingot high-temperature oxidation resistant coating of the present invention and titanium ingot.
Prepare water-based titanium ingot high-temperature oxidation resistant coating and carry out the production of titanium ingot according to the method for embodiment 1, different, the consumption of Al powder is 848g, and the consumption of Zn powder is 9g, and the consumption of Sn powder is 9g, and the consumption of Cu powder is 9g.Obtain water-based titanium ingot high-temperature oxidation resistant coating A4, the solid content of measuring water-based titanium ingot high-temperature oxidation resistant coating A4 is that 86%, pH value is 7.5.Same Fig. 1 of the photo of titanium ingot surface after rolling, the Hardness Distribution of titanium ingot surface is shown in Fig. 4.
Embodiment 5
The present embodiment is for illustrating the production method of water-based titanium ingot high-temperature oxidation resistant coating of the present invention and titanium ingot.
Prepare water-based titanium ingot high-temperature oxidation resistant coating and carry out the production of titanium ingot according to the method for embodiment 1, different, the consumption of Al powder is 674g, and the consumption of Zn powder is 67g, and the consumption of Sn powder is 67g, and the consumption of Cu powder is 67g.Obtain water-based titanium ingot high-temperature oxidation resistant coating A5, the solid content of measuring water-based titanium ingot high-temperature oxidation resistant coating A5 is that 90%, pH value is 9.5.Same Fig. 1 of the photo of titanium ingot surface after rolling, the Hardness Distribution of titanium ingot surface is shown in Fig. 4.
Embodiment 6
The present embodiment is for illustrating the production method of water-based titanium ingot high-temperature oxidation resistant coating of the present invention and titanium ingot.
Prepare water-based titanium ingot high-temperature oxidation resistant coating and carry out the production of titanium ingot according to the method for embodiment 1, different, benzene emulsion is replaced with to soluble epoxide film-forming resin (being purchased from Shanghai Wang Jie trade Co., Ltd, YUKARESIN EA-080).Obtain water-based titanium ingot high-temperature oxidation resistant coating A6, the solid content of measuring water-based titanium ingot high-temperature oxidation resistant coating A6 is that 88%, pH value is 9.3.Same Fig. 1 of the photo of titanium ingot surface after rolling, the Hardness Distribution of titanium ingot surface is shown in Fig. 4.
Comparative example 1
Prepare water-based titanium ingot high-temperature oxidation resistant coating and carry out the production of titanium ingot according to the method for embodiment 1, different is, by the Al powder of the weight such as Zn powder, Sn powder and Cu powder replace with, obtain water-based titanium ingot high-temperature oxidation resistant coating D1, the solid content of measuring water-based titanium ingot high-temperature oxidation resistant coating D1 is that 89%, pH value is 8.6.After rolling, Fig. 2 is shown in by the photo of titanium ingot surface, and the Hardness Distribution of titanium ingot surface is shown in Fig. 4.
Comparative example 2
Titanium ingot surface does not spray water-based titanium ingot high-temperature oxidation resistant coating, directly sends into annealing furnace, and at 1000 DEG C, thermostatically heating 8h, is then rolled, and after rolling, Fig. 3 is shown in by the photo of titanium ingot surface, and the Hardness Distribution of titanium ingot surface is shown in Fig. 4.
Fig. 1, Fig. 2, Fig. 3 are compared and can be found out, spray water-based titanium ingot high-temperature oxidation resistant coating of the present invention, after rolling, titanium ingot surface is smooth, flawless; The agent of spraying oxidation protection is the water-based titanium ingot high-temperature oxidation resistant coating of Al powder, and after rolling, crackle appears in titanium ingot surface; Titanium ingot surface does not spray water-based titanium ingot high-temperature oxidation resistant coating and directly carries out anneal, and after rolling, titanium ingot surface occurs compared with deep torn grain, and even part comes off.
The normal consistency Hv of titanium ingot is 120 left and right, if form dissolved oxygen layer in annealing process, can make the hardness of titanium ingot surface increase.As can be seen from Figure 4, apply water-based titanium ingot high-temperature oxidation resistant coating of the present invention, can make titanium ingot after rolling at case depth during at 1mm at the most, can make hardness Hv reach 120 left and right, illustrate and adopt water-based titanium ingot high-temperature oxidation resistant coating of the present invention, can make the thickness of the dissolved oxygen layer that titanium ingot forms in annealing process be at most 1mm; And the oxidation protection agent that adopts comparative example 1 is the water-based titanium ingot high-temperature oxidation resistant coating of Al powder, case depth just makes hardness Hv reach 120 left and right in the time of 2.5mm, illustrates that the thickness of the dissolved oxygen layer forming is 2.5mm; Comparative example 2, titanium ingot surface does not apply water-based titanium ingot high-temperature oxidation resistant coating, directly carries out anneal, just makes hardness Hv reach 120 left and right in the time that case depth is 6mm, illustrate and do not apply water-based titanium ingot high-temperature oxidation resistant coating, titanium ingot will form the dissolved oxygen layer of about 6mm in annealing process.Visible, apply water-based titanium ingot high-temperature oxidation resistant coating of the present invention, can greatly reduce the formation of dissolved oxygen layer.
Embodiment 1 is compared and can be found out with embodiment 4 and embodiment 5 respectively; in the oxidation protection agent used of water-based titanium ingot high-temperature oxidation resistant coating, the weight ratio of Al powder, Zn powder, Sn powder and Cu powder is 1:0.02-0.04:0.02-0.04:0.02-0.04, can further reduce the formation of dissolved oxygen layer.Embodiment 1 and embodiment 6 are compared and can be found out, water-based titanium ingot high-temperature oxidation resistant coating water-soluble film forming agent used adopts benzene emulsion, can further reduce the formation of dissolved oxygen layer.
Water-based titanium ingot high-temperature oxidation resistant coating of the present invention, can ensure titanium ingot not oxidized cracking in constant temperature 8h surface under 1000 DEG C of high temperature, and can greatly reduce the formation of dissolved oxygen layer, can effectively reduce production costs, and improves lumber recovery and the production efficiency of titanium material; In coating, do not contain the harmful element limiting in RoHS quality, meanwhile, this water-based titanium ingot high-temperature oxidation resistant coating does not have toxic substance volatilization in air, does not affect environmental protection effect of construction environment etc.; Preparation technology is simple, on-the-spot preparation can use time, and the preparation time is short, simple possible, also can prepare after production, at room temperature store, coating is stablized shelf-stability and can be reached more than 6 months, there will be precipitation, demixing phenomenon, still, when use, shaking up or re-start stirring can use; Can adopt the multiple coating methods such as pneumatic spraying, vacuum spraying, brushing, easy to use.The production method of titanium ingot of the present invention has good economic benefit and social benefit, in titanium plate and titanium pipe production industry, has comparatively wide popularizing application prospect.
Below describe by reference to the accompanying drawings the preferred embodiment of the present invention in detail; but; the present invention is not limited to the detail in above-mentioned embodiment; within the scope of technical conceive of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
It should be noted that in addition, each concrete technical characterictic described in above-mentioned embodiment, in reconcilable situation, can combine by any suitable mode, for fear of unnecessary repetition, the present invention is to the explanation no longer separately of various possible array modes.
In addition, also can carry out arbitrary combination between various embodiment of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (10)
1. a water-based titanium ingot high-temperature oxidation resistant coating, is characterized in that, after described water-based titanium ingot high-temperature oxidation resistant coating is mixed by a kind of raw mixture, obtains, and described raw mixture contains oxidation protection agent, water-soluble film forming agent and water; Described oxidation protection agent contains Al powder, Zn powder, Sn powder and Cu powder, and the weight ratio of Al powder, Zn powder, Sn powder and Cu powder is 1:0.01-0.1:0.01-0.1:0.01-0.1.
2. water-based titanium ingot high-temperature oxidation resistant coating according to claim 1, wherein, the weight ratio of Al powder, Zn powder, Sn powder and Cu powder is 1:0.02-0.04:0.02-0.04:0.02-0.04.
3. water-based titanium ingot high-temperature oxidation resistant coating according to claim 1 and 2, wherein, with respect to the described oxidation protection agent of 1 weight part, in solid, the consumption of described water-soluble film forming agent is 0.025-0.1 weight part, the consumption of water is 1-1.5 weight part.
4. water-based titanium ingot high-temperature oxidation resistant coating according to claim 1 and 2, wherein, described water-soluble film forming agent is at least one in benzene emulsion, water-soluble polyester film-forming resin, water-soluble phenylpropyl alcohol film-forming resin, soluble epoxide film-forming resin, aqurous ployurethane film-forming resin, water-soluble silicon the third film-forming resin, water-soluble poly divinyl film-forming resin, water-soluble acrylic film-forming resin and water-soluble fluorine carbon film-forming resin.
5. water-based titanium ingot high-temperature oxidation resistant coating according to claim 1 and 2, wherein, described raw mixture also contains one or more in solidifying agent, dispersion agent and thickening material.
6. water-based titanium ingot high-temperature oxidation resistant coating according to claim 5; wherein; described raw mixture contains solidifying agent, dispersion agent and thickening material; with respect to the described oxidation protection agent of 1 weight part; the consumption of described solidifying agent is 0.001-0.003 weight part; the consumption of described dispersion agent is 0.0005-0.001 weight part, and the consumption of described thickening material is 0.001-0.006 weight part.
7. the application of the water-based titanium ingot high-temperature oxidation resistant coating described in any one in titanium ingot is produced in claim 1-6.
8. the production method of a titanium ingot, it is characterized in that, described method is included in titanium ingot and carries out before anneal, at the surface-coated water-based titanium ingot high-temperature oxidation resistant coating of titanium ingot, it is characterized in that, described water-based titanium ingot high-temperature oxidation resistant coating is the water-based titanium ingot high-temperature oxidation resistant coating described in any one in claim 1-6.
9. method according to claim 8, wherein, the mode of coating comprises pneumatic spraying, vacuum spraying, brushing.
10. method according to claim 8, wherein, the thickness of the photopolymer layer that the amount that described water-based titanium ingot high-temperature oxidation resistant coating applies forms after described water-based titanium ingot high-temperature oxidation resistant coating is solidified is 0.2-0.4mm.
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| CN106221494A (en) * | 2016-07-27 | 2016-12-14 | 攀钢集团研究院有限公司 | Aqueous high-temperature-resistant steel titanium anti-stick coating and application thereof |
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