CN104017421B - The production method of water-based titanium ingot high-temperature oxidation resistant coating and application and titanium ingot - Google Patents
The production method of water-based titanium ingot high-temperature oxidation resistant coating and application and titanium ingot Download PDFInfo
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Abstract
The invention discloses a kind of water-based titanium ingot high-temperature oxidation resistant coating, obtain after described water-based titanium ingot high-temperature oxidation resistant coating is mixed by a kind of raw mixture, 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.Also disclose the application of water-based titanium ingot high-temperature oxidation resistant coating as above in titanium ingot is produced and the production method of titanium ingot.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, greatly can reduce the formation of dissolved oxygen layer; There is environmental protection effect; Preparation technology is simple; Multiple coating method can be adopted.The production method of titanium ingot of the present invention has comparatively wide popularizing application prospect in titanium plate and titanium pipe are produced.
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 generally wants annealed process in process of production, annealing generally will be carried out under the high temperature of about 900 DEG C, and at high temperature, oxygen can enter titanium ingot surface, forming hard dissolved oxygen layer, will there is the deep torn grain of about degree of depth 20mm in titanium ingot with upper surface at 900 DEG C of heating 4h.For the follow-up rolling of guarantee titanium pipe and the surface quality of hot rolling titanium plate, need to cut and grinding process titanium ingot in the operation of rolling, to remove crackle and dissolved oxygen layer, loss is larger like this.Because titanium ingot reacts obtained by titanium sponge, the cracking part of titanium ingot in heat-processed and dissolved oxygen layer are removed, has a strong impact on cost and the lumber recovery of titanium material, therefore need to carry out high temperature protection to titanium ingot.
Carry out high temperature protection to titanium ingot, the platinum ion plating of titanium surface can protect titanium not oxidized at 650 DEG C according to the study, but can not meet the high temperature requirement of annealing far away; The MCrAlY alloy with outstanding oxidation-resistance by spray or evaporation coating on Titanium base, but this also exists and to form congruent melting compound with titanium and increase and the formation problem of phase diffusion layer in titanium production heat-processed; When traditional anti-oxidation protection Paint Boron silicate glass base coating applies to titanium, the formation of oxide compound is had certain effect, but the object preventing dissolved oxygen layer from being formed can not be reached.Current useful aluminium, as the aluminium base oxidation protection coating of oxidation inhibitor, for titanium, have certain effect, but effect is still undesirable to the formation of oxide compound and dissolved oxygen layer, and due to viscosity lower, can only spray during use, can not brush, limit its application.
Therefore, need one can effectively prevent titanium ingot surface dissolved oxygen layer and crackle from being formed, thus 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 to overcome the dissatisfactory defect of the existing protection of water-based titanium ingot high-temperature oxidation resistant coating to titanium ingot, the production method of a kind of new water-based titanium ingot high-temperature oxidation resistant coating and application and titanium ingot is provided.
The present inventor finds under study for action, containing 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 obtained after raw mixture containing this oxidation protection agent and water-soluble film forming agent and water mixes, titanium ingot not oxidized cracking in constant temperature 8h surface under 1000 DEG C of high temperature can be ensured, and greatly can reduce the formation of dissolved oxygen layer, effectively can reduce production cost 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, obtain after described water-based titanium ingot high-temperature oxidation resistant coating is mixed by a kind of raw mixture, 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 before titanium ingot carries out 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 greatly can reduce the formation of dissolved oxygen layer, effectively can reduce production cost, improve lumber recovery and the production efficiency of titanium material.Such as, to climb steel, rolling titanium section product, design annual output 10000 tons of production capacities, with each titanium ingot (semifinished product) 7.5 tons calculating, will produce the titanium billet of about 1300 every year, 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, approximately produce 32500m every year
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, accumulative annual use coating about 6.5 tons-13 tons.Zone of oxidation cracking 20mm depth calculation is there is with each titanium ingot, each titanium ingot will machine away 100-200 kilogram, with the calculating of 80000 yuan/ton, titanium ingot, each titanium ingot is lost between 8000-16000 unit because of oxidation cutting tip, meanwhile, a large amount of human and material resources also will be spent to cut, extra increase production cost and production time, and adopting water-based titanium ingot high-temperature oxidation resistant coating of the present invention, the price of coating calculates, every year by saving production cost about 13,650,000 yuan by 200 yuan/Kg.
Water-based titanium ingot high-temperature oxidation resistant coating of the present invention, not containing the harmful element limited in RoHS quality in coating, meanwhile, this water-based titanium ingot high-temperature oxidation resistant coating does not have toxic substance to volatilize in atmosphere, 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, extemporaneous preparation when can use, and the preparation time is short, simple possible; Also after can preparing production, at room temperature store, coating stabilization shelf-stability can reach more than 6 months, there will be precipitation, demixing phenomenon, but shaking up or re-start stirring during use 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, have comparatively wide popularizing application prospect.
Other features and advantages of the present invention are described in detail in embodiment part subsequently.
Accompanying drawing explanation
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 rolling.
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 described in detail.Should be understood that, embodiment described herein, only for instruction and explanation of 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, obtain after this water-based titanium ingot high-temperature oxidation resistant coating is 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, 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; object of the present invention can be realized; titanium ingot not oxidized cracking in constant temperature 8h surface under 1000 DEG C of high temperature can be ensured; the formation of very big minimizing 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 reduce the formation of dissolved oxygen layer further.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, relative 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, the pH value that can make 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 titanium ingot surface online, energy rapid solidification, form self-drying type coating, and due to solid content high, there will not be rete to trickle phenomenon, coating tack is very good, no matter when 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, the various water-soluble film forming agents that this area is conventional can be adopted, such as, 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 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, when water-soluble film forming agent is preferably benzene emulsion, the formation of dissolved oxygen layer can be reduced further.Therefore, water-soluble film forming agent is preferably benzene emulsion, and for the solid content of benzene emulsion without particular requirement, can adopt the benzene emulsion that this area is conventional, the solid content of benzene emulsion is preferably 40-60 % by weight.
In order to improve the tack of water-based titanium ingot high-temperature oxidation resistant coating of the present invention at titanium ingot surface further; raw mixture of the present invention is preferably also containing one or more in solidifying agent, dispersion agent and thickening material; more preferably containing solidifying agent, dispersion agent and thickening material; relative 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, for the respective concrete material of solidifying agent, dispersion agent, thickening material without particular requirement, various solidifying agent, dispersion agent, thickening material that this area is conventional can be adopted.Such as, solidifying agent can be SiO
2, dispersion agent can be polyvinyl alcohol, water-soluble polyethylene wax, Polyvinylpyrolidone (PVP), polyoxyethylene etc., and thickening material can be methylcellulose gum, carboxymethyl cellulose, Natvosol, Vltra tears etc.
For the preparation method of water-based titanium ingot high-temperature oxidation resistant coating of the present invention without particular requirement, the various methods that this area is conventional can be adopted, as long as each component mixed.But the present inventor finds under study for action, adopt and prepare water-based titanium ingot high-temperature oxidation resistant coating with the following method, each component can be made to be mixed to get evenly.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, starts the water slowly adding 3-5%; and oxidation protection agent is added together with the water of 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 before titanium ingot carries out 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, for anneal without particular requirement, can adopt the annealing treating process of this area routine, such as, annealing temperature is 800-1000 DEG C, and annealing time is 4-8h.
In the present invention, for the mode applied without particular determination, such as, can comprise pneumatic spraying, vacuum spraying, brushing etc.
In the present invention, the thickness that the amount of water-based titanium ingot high-temperature oxidation resistant coating coating preferably makes water-based titanium ingot high-temperature oxidation resistant coating solidify the rear photopolymer layer formed is 0.2-0.4mm.When the thickness of photopolymer layer is less than 0.2mm, titanium ingot can not get sufficient high temperature protection, and when the thickness of photopolymer layer is more than 0.4mm, cost raises.
What those skilled in the art should understand that is, process will be rolled after titanium ingot carries out anneal, for the condition of rolling process without particular requirement, the normal condition of this area can be adopted, such as, the condition of rolling comprises: the rolling carrying out 10 passages after annealing, and 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 value measuring 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.
The rolling of 10 passages is carried out in rolling after being annealing, each percentage pass reduction is 20mm.
Embodiment 1
The present embodiment is for illustration of 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) 800g Al powder, 30g Zn powder, 20g Sn powder and 25g Cu powder is taken, 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) 1g SiO is taken
2, add in container, and stir;
(4) taking 0.5g polyvinyl alcohol (being purchased from Qingdao An Mao International Trading Company Ltd, Z-200) adds in container, stirs, treats that liquid is uniform and stable phase;
(5) taking 1g carboxymethyl cellulose (being purchased from Hebei Xingtai Mierocrystalline cellulose company limited, XTHPMC10) adds in container, and adding water after stirring is settled to 1L, obtains water-based titanium ingot high-temperature oxidation resistant coating A1.
The solid content measuring water-based titanium ingot high-temperature oxidation resistant coating A1 is 89%, and pH value is 8.4.
Water-based titanium ingot high-temperature oxidation resistant coating A1 automatization spray gun (is purchased from Tianjin Tuo Bao Science and Technology Ltd., model: 006_1589, following examples and comparative example are together) be sprayed at titanium ingot surface, the thickness that the amount of spraying makes water-based titanium ingot high-temperature oxidation resistant coating solidify the rear photopolymer layer formed is 0.3mm, spontaneous curing after placement 5min at normal temperatures and pressures, 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 illustration of 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) 800g Al powder, 16g Zn powder, 16g Sn powder and 16g Cu powder is taken, 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) 1.7g SiO is taken
2, add in container, and stir;
(4) taking 0.68g Polyvinylpyrolidone (PVP) (being purchased from Guangzhou Ba Tai Chemical Co., Ltd., PVPK90) adds in container, stirs, treats that liquid is uniform and stable phase;
(5) taking 3.4g Natvosol (being purchased from Hebei Xingtai Mierocrystalline cellulose company limited, YLT-999) adds in container, and adding water after stirring is settled to 1L, obtains water-based titanium ingot high-temperature oxidation resistant coating A2.
The solid content measuring water-based titanium ingot high-temperature oxidation resistant coating A2 is 87%, and pH value is 7.9.
By water-based titanium ingot high-temperature oxidation resistant coating A2 with automatization spray gun spraying in titanium ingot surface, the thickness that the amount of spraying makes water-based titanium ingot high-temperature oxidation resistant coating solidify the rear photopolymer layer formed is 0.2mm, spontaneous curing after placement 5min at normal temperatures and pressures, 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 illustration of 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) 767g Al powder, 30g Zn powder, 30g Sn powder and 23g Cu powder is taken, 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) 2.55g SiO is taken
2, add in container, and stir;
(4) taking 0.85g polyoxyethylene (be purchased from and attack green gram of novel material science and technology (Shanghai) Co., Ltd., PEO-5) adds in container, stirs, treats that liquid is uniform and stable phase;
(5) taking 5.1g Vltra tears (being purchased from Hebei Xingtai Mierocrystalline cellulose company limited, XTHPMC10) adds in container, and adding water after stirring is settled to 1L, obtains water-based titanium ingot high-temperature oxidation resistant coating A3.
The solid content measuring water-based titanium ingot high-temperature oxidation resistant coating A3 is 85%, and pH value is 9.2.
By water-based titanium ingot high-temperature oxidation resistant coating A3 with automatization spray gun spraying in titanium ingot surface, the thickness that the amount of spraying makes water-based titanium ingot high-temperature oxidation resistant coating solidify the rear photopolymer layer formed is 0.4mm, spontaneous curing after placement 5min at normal temperatures and pressures, 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 illustration of 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 according to the method for embodiment 1 and carry out the production of titanium ingot, the consumption of to be the consumption of 848g, Zn powder be 9g, the Sn powder of the consumption unlike, Al powder is the consumption of 9g, Cu powder is 9g.Obtain water-based titanium ingot high-temperature oxidation resistant coating A4, the solid content measuring water-based titanium ingot high-temperature oxidation resistant coating A4 is 86%, and 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 illustration of 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 according to the method for embodiment 1 and carry out the production of titanium ingot, the consumption of to be the consumption of 674g, Zn powder be 67g, the Sn powder of the consumption unlike, Al powder is the consumption of 67g, Cu powder is 67g.Obtain water-based titanium ingot high-temperature oxidation resistant coating A5, the solid content measuring water-based titanium ingot high-temperature oxidation resistant coating A5 is 90%, and 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 illustration of 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 according to the method for embodiment 1 and carry out the production of titanium ingot, unlike, benzene emulsion is replaced with 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 measuring water-based titanium ingot high-temperature oxidation resistant coating A6 is 88%, and 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 according to the method for embodiment 1 and carry out the production of titanium ingot, unlike, 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 measuring water-based titanium ingot high-temperature oxidation resistant coating D1 is 89%, and 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, and directly send into annealing furnace, thermostatically heating 8h at 1000 DEG C, 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 find 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, comparatively deep torn grain appears in titanium ingot surface, even partial exfoliation.
The normal consistency Hv of titanium ingot is about 120, if form dissolved oxygen layer in annealing process, then the hardness of titanium ingot surface can be made to increase.As can be seen from Figure 4, apply water-based titanium ingot high-temperature oxidation resistant coating of the present invention, can make the titanium ingot after rolling case depth at 1mm at the most time, hardness Hv can be made to reach about 120, illustrate and adopt water-based titanium ingot high-temperature oxidation resistant coating of the present invention, the thickness of the dissolved oxygen layer that titanium ingot can be made to be formed in annealing process is at most 1mm; And adopting the oxidation protection agent of comparative example 1 to be the water-based titanium ingot high-temperature oxidation resistant coating of Al powder, case depth just makes hardness Hv reach about 120 when 2.5mm, illustrate that the thickness of the dissolved oxygen layer formed 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 about 120 when 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, greatly can reduce the formation of dissolved oxygen layer.
Embodiment 1 is compared can find out with embodiment 4 and embodiment 5 respectively; in the oxidation protection agent that water-based titanium ingot high-temperature oxidation resistant coating is used, 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 reduce the formation of dissolved oxygen layer further.Embodiment 1 and embodiment 6 are compared and can find out, the water-soluble film forming agent employing benzene emulsion that water-based titanium ingot high-temperature oxidation resistant coating is used, the formation of dissolved oxygen layer can be reduced further.
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 greatly can reduce the formation of dissolved oxygen layer, effectively can reduce production cost, improve lumber recovery and the production efficiency of titanium material; Not containing the harmful element limited in RoHS quality in coating, meanwhile, this water-based titanium ingot high-temperature oxidation resistant coating does not have toxic substance to volatilize in atmosphere, does not affect environmental protection effect of construction environment etc.; Preparation technology is simple, extemporaneous preparation when can use, and the preparation time is short, simple possible, also after can preparing production, at room temperature store, coating stabilization shelf-stability can reach more than 6 months, there will be precipitation, demixing phenomenon, but shaking up or re-start stirring during use can use; The multiple coating methods such as pneumatic spraying, vacuum spraying, brushing can be adopted, 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, have comparatively wide popularizing application prospect.
Below the preferred embodiment of the present invention is described in detail by reference to the accompanying drawings; 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 characteristic described in above-mentioned embodiment, in reconcilable situation, can be combined by any suitable mode, in order to avoid unnecessary repetition, the present invention illustrates no longer separately to various possible array mode.
In addition, also can carry out arbitrary combination between various different 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 (7)
1. a water-based titanium ingot high-temperature oxidation resistant coating, is characterized in that, obtain after described water-based titanium ingot high-temperature oxidation resistant coating is mixed by a kind of raw mixture, 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 1:0.02-0.04:0.02-0.04:0.02-0.04;
Wherein, relative 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, and the consumption of water is 1-1.5 weight part, and described water-soluble film forming agent is benzene emulsion.
2. water-based titanium ingot high-temperature oxidation resistant coating according to claim 1, wherein, described raw mixture is also containing one or more in solidifying agent, dispersion agent and thickening material.
3. water-based titanium ingot high-temperature oxidation resistant coating according to claim 2; wherein; described raw mixture contains solidifying agent, dispersion agent and thickening material; relative 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.
4. the application of the water-based titanium ingot high-temperature oxidation resistant coating in claim 1-3 described in any one in titanium ingot is produced.
5. the production method of a titanium ingot, it is characterized in that, described method is included in before titanium ingot carries out anneal, at the surface-coated water-based titanium ingot high-temperature oxidation resistant coating of titanium ingot, wherein, described water-based titanium ingot high-temperature oxidation resistant coating is the water-based titanium ingot high-temperature oxidation resistant coating in claim 1-3 described in any one.
6. method according to claim 5, wherein, the mode of coating comprises pneumatic spraying, vacuum spraying, brushing.
7. method according to claim 5, wherein, the thickness that the amount of described water-based titanium ingot high-temperature oxidation resistant coating coating makes described water-based titanium ingot high-temperature oxidation resistant coating solidify the rear photopolymer layer formed is 0.2-0.4mm.
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