CN105855082A - Coating method for metal tanks with coil-wound heat exchanger - Google Patents

Coating method for metal tanks with coil-wound heat exchanger Download PDF

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Publication number
CN105855082A
CN105855082A CN 201610082662 CN201610082662A CN105855082A CN 105855082 A CN105855082 A CN 105855082A CN 201610082662 CN201610082662 CN 201610082662 CN 201610082662 A CN201610082662 A CN 201610082662A CN 105855082 A CN105855082 A CN 105855082A
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CN
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Prior art keywords
powder
method
coil
metal
tanks
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CN 201610082662
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Chinese (zh)
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CN105855082B (en )
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S·斯坦达迪
F·贝蒂
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阿利斯顿特莫股份公司
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT GENERATING MEANS, IN GENERAL
    • F24H1/00Water heaters having heat generating means, e.g. boiler, flow- heater, water-storage heater
    • F24H1/18Water storage heaters
    • F24H1/181Construction of the tank
    • F24H1/183Inner linings
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/08Plant for applying liquids or other fluent materials to objects
    • B05B5/12Plant for applying liquids or other fluent materials to objects specially adapted for coating the interior of hollow bodies
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05DPROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00Processes for applying liquids or other fluent materials
    • B05D1/02Processes for applying liquids or other fluent materials performed by spraying
    • B05D1/04Processes for applying liquids or other fluent materials performed by spraying involving the use of an electrostatic field
    • B05D1/06Applying particulate materials
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05DPROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2202/00Metallic substrate
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05DPROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/22Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to internal surfaces, e.g. of tubes
    • B05D7/227Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to internal surfaces, e.g. of tubes of containers, cans or the like
    • CCHEMISTRY; METALLURGY
    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23DENAMELLING OF, OR APPLYING A VITREOUS LAYER TO, METALS
    • C23D5/00Coating with enamels or vitreous layers

Abstract

The object of the present invention is an electrostatic powder coating method for metal tanks (1) internally provided with a coil-wound heat exchanger (5). The method provides for an application step of the powder during which the powder dispensing lance runs exclusively through a stretch (H1) just sufficient to deposit powder on the entire surface of the coil (5) optionally followed by further steps, wherein the powder dispensing lance operates in stretches (H2, H3) different from the stretches (H1, H2) run through in previous steps.

Description

用于设置有盘管热交换器的金属储罐的涂覆方法 A coil heat exchanger is provided with a metal coating tank

背景技术 Background technique

[0001 ]本发明目的是提供适用于金属储罐的静电粉末涂覆方法,该金属储罐用来装水或类似流体,并在内部设置有一个或多个盘管的热交换器,热交换器也是金属的且通过焊接到该储罐壁上而固定住。 [0001] The object of the present invention to provide a metal suitable for an electrostatic powder coating process tank, the metal tank for containing water or similar fluids, and is provided with one or more of the heat exchanger coil within the heat exchange It is metallic and is welded to the tank wall and fixed.

[0002]具体来说,该方法涉及玻璃类型的搪瓷粉末的静电沉淀,更准确的说,所述涂覆就是上釉(上瓷漆)。 [0002] In particular, the method relates to an electrostatic precipitator of the type of glass enamel powder, more precisely, the glazing is coated (on the enamel).

[0003]采纳静电粉末上釉来代替先前通过喷溅或浸渍进行涂覆的湿法上釉,是在保持上釉竞争力同时获得生态过程的关键之一。 [0003] Glazed adopted instead of the wet electrostatic powder coating by glazing the previous dipping or sputtering, it is one of the key holding glazing while obtaining competitive ecological processes.

[0004]如此众所周知的技术的基本特征是: [0004] The basic features such well-known techniques are:

[0005]-赋予干的搪瓷粉末以静电荷; [0005] - imparting to the dry powder electrostatic charge enamel;

[0006]-通过合适的分配枪(也被称作“喷枪”),将如此的粉末分配到待要上釉的工件上; [0006] - by a suitable dispensing gun (also referred to as "lance"), thus dispensing the powder to be glazed onto a workpiece;

[0007]-抽出未黏附到工件上的粉末,并使粉末进行总体再循环。 [0007] - extracting non-adherent powder to the workpiece, and the powder is generally recycled.

[0008]为了确保粉末与金属基底的黏附和涂层随时间推移的耐用性,粉末成分是非常重要的因素。 [0008] In order to ensure durability and adhesion of the coating powder and the metal substrate over time, the powder component is a very important factor. 例如,存在太多的细颗粒就不能正确地带电荷,并导致过多的粉末积聚在待要上釉的工件角上。 For example, there are too many fine particles can not be properly charge zone, and result in excessive accumulation of powder on the workpiece corner to be glazed. 另一方面,存在太多大的颗粒则会导致不均衡的电荷吸力,造成厚度相对的不均匀。 On the other hand, there are too many large particles will result in uneven charge attraction, resulting thickness is relatively uniform.

[0009]因此,正如把技术领域内技术人员所知,为能正确涂覆,搪瓷必须具有各种颗粒度和合适静电荷的最佳分布,否则就会出现公知的不理想情形,诸如“法拉第笼”效应或“反电晕”现象;这些现象不利地影响到上釉的结果。 [0009] Thus, as is within the skill of the skilled person, can be applied properly to the enamel must have an optimum distribution of the various particle and appropriate electrostatic charge, otherwise known undesirable situation occurs, such as "Faraday cage "effect or" back corona "phenomenon; these phenomena adversely affect the results glazed. 事实上,这要求上釉的分布达到无间隙或粉末无局部积聚,使厚度保持在下限和上限之间,低于下限的话,涂覆层就不能被认为是起保护作用的,超过上限的话,非常可能出现搪瓷间隙。 In fact, it requires no gap to reach the distribution glazed no local accumulation or powders, the thickness held between the lower and upper limit, below the lower limit, then, the coating layer can not be considered protective effect, it exceeds the upper limit, very enamel gap that may arise.

[00Ί0]举例来说,对盛放加压液体的储罐而言,介于180和500μηι之间的搪瓷厚度被认为足够达到目的。 [00Ί0] For example, a tank for accommodating the pressurized fluid, the thickness of enamel is interposed between the 180 and 500μηι is considered sufficient to achieve the purpose.

[0011]自上世纪70年代中期开始,对于该技术应用所涉及现象的理解已经有了长足的进步,然而,与分配喷枪相比,它不能解决与搪瓷在设置有许多遮蔽区域的复杂表面上涂覆相关的困难。 [0011] Since the mid-70s of last century, for the technology involved in the phenomenon of understanding has made significant progress, however, compared with the allocation gun, it does not solve the many complex set in enamel surface of the mask area coated related difficulties.

[0012]本发明目标要提供解决方案或给出至少明确的改进的情况是,设有一个或多个盘管卷绕式热交换器的钢质储罐上釉是特别困难的,其原因是需要用搪瓷涂覆支承盘管的壁,盘管相对于喷枪保持了很大被遮蔽的部分,还由于这样的事实:并排布置的盘管的各匝使得均匀涂覆很困难,大概是由于不理想的“法拉第笼”效应。 Where [0012] The object of the present invention is to provide a solution or at least give a clear improvement is provided with one or more coil wound heat exchanger enamelled steel tank is particularly difficult, because it enamel coated support wall need coils, the coil holder relative to the lance a lot masked portions, but also due to the fact that: arranged side by side so that the turns of the coil uniform coating is difficult, presumably due to ideal effect "Faraday cage."

[0013]对所述情形进行静电粉末上釉的公知的涂覆方法(将在下面进行描述)是非常艰苦和费时的,然而,该方法不能对不同的工件产生满意的和恒定的结果,常常在盘管的端部匝圈内留下危险的不完整区域,这样,基本上被舍弃不用,宁可通过浸渍在搪瓷浆料中,选用湿法来上釉如此的储罐,放弃了干式上釉的所有优点,尤其是,对未黏附到工件上的粉末的完全再循环。 [0013] for the case of known electrostatic powder coating methods glazing (which will be described below) is very difficult and time-consuming, however, this method does not give satisfactory results and constant different workpieces, often circle at the end of the coil turns left risk incomplete region so that substantially no discarded, thus prefer to glazed enamel tank by immersion in the slurry, the selection of a wet, dry abandoned on All the advantages of the glaze, in particular, full recirculation of non-adherent powder to the workpiece.

发明内容 SUMMARY

[0014]本发明的目的是提供在设置有也为钢质的内部加热盘管的钢储罐内涂覆静电粉末上釉的方法,该方法确保搪瓷涂层的厚度在全部内表面上所要求的下限和上限之间。 [0014] The object of the present invention is to provide a method provided with a coil within the steel tanks electrostatic powder coating also heats the internal glazed steel, the method to ensure that the thickness of the enamel coating on the entire inner surface of the desired between the lower and upper limits.

[0015]本发明的另一目的是提供一种方法,该方法通过步骤次数减少且比目前公知的方法更简单的步骤来达到上述的目的。 [0015] Another object of the present invention is to provide a method and by reducing the number of steps than the current known method simpler steps to achieve the above object.

附图说明 BRIEF DESCRIPTION

[0016]以下对根据主权利要求所述的本发明方法的基本版本的描述,以及对根据从属权利要求所述的某些优选的变体的描述,将更好地突出本发明进一步的特征和优点,全部描述借助于附图中的非限制性实例来说明的,附图中: [0016] The following description of the basic version of the method according to the present invention according to the main claim, and further features of the description of some preferred variants according to the dependent claims, the present invention will be better and projecting advantages, all describe non-limiting examples will be described with the aid of the accompanying drawings, and the accompanying drawings in which:

[0017]图1示出储存罐的剖切图,该储存罐能根据本发明的方法进行上釉; [0017] Figure 1 shows a cut away view of the storage tank, the storage tank can be performed according to the method of the present invention, the glazing;

[0018]图2(a)至2(f)针对图1同样的储存罐示出根据现有技术涂覆粉末上釉的顺序步骤; [0018] FIG. 2 (a) to 2 (f) shows the sequential steps according to the prior art glazed coating powder storage tank for the same Figure 1;

[0019]图3(a)至3(c)针对图1同样的储存罐示出根据本发明涂覆粉末上釉的顺序步骤。 [0019] FIG. 3 (a) to 3 (c) for the same storage tank 1 shows a sequence of steps according to the present invention is coated glazing powder.

具体实施方式 detailed description

[0020]图1示出储罐I,其中示出了:借助于焊缝3连接到圆筒壁4(行话中称作“壳体”)的盖子2;焊接到壳体4上的单个盘管5;相应的水入口和出口管6和7,用于维护检查的开口8,可供选择地插入温度控制和加热装置,就本发明来说,插入用来分配有待静电涂覆的搪瓷粉末的喷枪(未示出)。 [0020] Figure 1 shows a storage tank I, which is shown: by means of a weld seam 3 is connected to the cylindrical wall 4 (in the jargon as "housing") of the lid 2; single disc welded to the housing 4 tube 5; corresponding water inlet and outlet tubes 6 and 7, an opening 8 for maintenance and inspection, the temperature control for selectively inserted and the heating means, it is for the present invention, to be inserted for dispensing electrostatically powder coated enamel lance (not shown).

[0021]储罐I的绘图不一定成比例;尤其是,盘管5的匝数实际上比图中所示的更厚。 [0021] Tank I is not necessarily to scale drawing; In particular, the number of turns of the coil 5 is actually thicker than shown in FIG.

[0022]储罐I显示为布置有垂直轴线,下面有开口 8,其位于搪瓷涂覆过程中要占据的位置;如此的位置不一定是运行状态中占据的位置。 [0022] Tank I is displayed as a vertical axis is arranged below an opening 8, which is located at a position to be occupied by an enamel coating process; the position is not necessarily so in the position occupied by the operating state. 下面可供选择地用到的诸如“下面”/“上面”,“之上”/“之下”的空间定向术语,是指如图所示的位置,即,涂覆静电粉末需要的设置。 Alternatively, used below, such as "beneath" / "above," space "on" / "beneath" the directional terminology, refers to the position as shown, i.e., electrostatic powder coating desired setting.

[0023]已知的方法和根据本发明的方法将在下面进行描述,这两种方法提供多个步骤,每个步骤包括:粉末分配喷枪以预定的伸展一次或多次向上和向下通过,通过的次数取决于可沉淀在每个壳体上的粉末量,且最后取决于要求达到的搪瓷厚度。 [0023] The known methods and according to the invention will be described below, these two methods provide a plurality of steps, each step comprising: a powder dispensing gun at one or more predetermined stretching up and down through, can be precipitated by the number depends on the amount of powder in each case, depending on the requirements and the final thickness of the enamel.

[0024]储罐I上标明有某些区域,这些区域用相应的垂直伸展部分和水平的分隔平面标识。 [0024] Certain areas marked on the tank I, these regions are identified by respective vertical and horizontal portions extending parting plane.

[0025]总高度Hscb从顶部到底部由以下组成:第一伸展部分He、跟着的中间伸展部分D、跟着的中心伸展部分Hsp以及另一中间伸展部分D,第一伸展部分He从上部盖子2的顶部延伸到焊缝3,其位于上部焊接平面α内;中间伸展部分D从所述的焊接平面α延伸到盘管5起始的上部平面β;中心伸展部分Hsp从所述上部平面β延伸到其后的盘管5结束的下部平面β;然后,另一中间伸展部分D从所述下部平面β延伸到下部平面α,从壳体4到下部盖子2的焊缝3位于该另一中间伸展部分D内。 [0025] The total height from the top in the end portion Hscb consisting of: a first extending portion He, followed by stretching the intermediate portion D, extending along the central portion of the intermediate extending portion and the other Hsp D, the first portion extending from the upper cover 2 He 3 extends to the top of the seam, which is located within the upper portion of the welding plane [alpha]; an intermediate portion extending from the weld plane [alpha] D extends to the upper portion of the plane coil 5 starting β; Hsp central extending portion extending from the upper plane β β to the lower plane of the coil end 5 thereafter; then, another intermediate D extending portion extending from the lower plane to the lower plane β [alpha], 2 weld 3 located further from the middle to the lower housing cover 4 the D portion extends. 即,垂直地标明了对应于盖子2的垂直伸展部分的端部伸展部分He;相对于未被盘管5占据的壳体4的两个伸展部分的相邻最内的伸展部分D;以及最后是由同样的盘管5占据的中心伸展部分Hsp。 I.e., perpendicularly marked vertically extending end portion corresponding to the portion of the lid portion 2 of stretch of He; relative to the adjacent portion of the housing 4 two extension coil 5 is not occupied by the extending portion D innermost; and finally Hsp extending from the center portion is the same coil 5 occupied.

[0026]从以下的事实可以明白:准确地涂覆搪瓷较为困难的区域(下文中称之为“关键区±或”)是焊缝3(从平面α刚好上面到刚好下面的区域)(这是由于其表面相当粗糙)以及盘管5的端部匝圈的区域。 [0026] will be apparent from the following facts: it is difficult to accurately coat the enamel region (hereinafter referred to as "critical region or ±") is a welding seam 3 (the plane α from just above to just below region) (which Since the surface is rather rough) and a region of the end turn of the coil 5.

[0027]另一方面,使搪瓷粉尘也到达介于所述盘管5起始和结束平面β之间的壳体4的伸展部分Hsp不存在特别的困难:尽管壳体4的该伸展部分Hsp部分地隐藏在喷枪后,但在静电荷形成的电场力线的引导下,粉末能够容易地到达。 [0027] On the other hand, so that the dust also reaches the enamel coil 5 interposed between the beginning and end portion of the housing 4 extending between the planes of the β Hsp particular difficulty does not exist: the extending portion 4 of the housing although Hsp partially hidden behind the gun, but under the guidance of the electric field lines formed on the electrostatic charge, the powder can be easily reached.

[0028]因此,已知的静电涂覆粉末的方法特别地涉及粉末在如此关键区域上的散布。 [0028] Thus, the known method of electrostatic powder coating in particular relates to such a powder is spread over the critical areas.

[0029]迄今为止大致采用的方法显示在图2(a)至2(f)中,这些图示出了所提供的连续的四至六个步骤中的每个步骤。 [0029] The method hitherto used generally shown in FIG. 2 (a) to 2 (f), the figures show four to six successive steps provided in each step.

[0030]参照图2(a),第一步骤包括专门在盘管5占据的伸展部分Hsp内(S卩,介于两个盘管5起始/结束平面β之间的空间内)涂覆粉末。 [0030] Referring to FIG. 2 (a), comprising the step of coating a first portion extending in the Hsp exclusively occupied by the coil 5 (S Jie, coil 5 interposed between two start / end within the space between the planes beta]) powder.

[0031]参照图2(b),第二步骤包括在伸展部分H.sup内涂覆粉末,该伸展部分H.sup从大约盘管5的一半高度的中心平面μ延伸到上部盖子2内的端部平面k,并足够靠近该盖子2顶部以让粉末全部覆盖它。 [0031] Referring to FIG. 2 (B), in the second step includes coating powder H.sup extending portion, the extending portion extending from H.sup half the height of the central plane 5 μ to about the coil of the upper cover 2 end plane k, and sufficiently close to the top of the lid 2 to allow it to cover all of the powder. 因此,该步骤的目的是将附加的粉末镀覆到上部匝上,并完全地覆盖盖子2的内部。 Thus, purpose of this step is to attach the powder was plated onto the upper turns, and completely covers the interior of the cover 2.

[0032] 参照图2(c),第三步骤在几何上对称于前一步骤,该步骤包括在伸展部分H.1nf内涂覆粉末,该伸展部分H.1nf从同样的中心平面μ延伸到充分在下部盖子2内的端部平面k,以允许用粉末全部进行涂覆。 [0032] Referring to FIG. 2 (c), a third step of geometrically symmetrical with respect to the previous step, the step in the extending portion comprises a coating powder H.1nf, the extending portion extending from the same plane H.1nf center to μ fully at the end of the lower portion 2 in the plane of k cover, to allow all of the powder coating.

[0033]参照图2(d)和(e),提供第四步骤和第五步骤,该两个步骤分别包括在对应于没有盘管5的壳体4的区域的伸展部分Dl和D2(在顶部和底部处,介于平面α和β之间的区域)内进一步涂覆粉末。 [0033] Referring to FIG. 2 (d) and (E), the step of providing a fourth and fifth step, the two steps are in the extended portion comprises a housing region Dl corresponds to no coils 4 and 5 of D2 (in the top and bottom, in the region interposed between the plane α and beta]) further coating powder. 这些区域旨在加厚关键区域(焊缝3和盘管5的端部匝圈)内的搪瓷层。 These thickened regions are intended within the critical area of ​​the enamel layer (weld 3 and the end turn of the coil 5).

[0034] 参照图2(f),最后的步骤包括对于从上部盖子2的内部延伸到下部盖子2的内部(即,从一个端部平面到另一端部平面k)的伸展部分,再次通过全部的储罐。 [0034] Referring to FIG. 2 (F), the final step comprises extending portion for extending from the interior of the upper cover 2 to the lower lid inside 2 (i.e., from one end of the plane to the other end plane k) by all again the storage tank.

[0035]尽管在涂覆粉末的该情形中,通过在最关键的区域内重复进行操作,但这不容易沉淀在端部匝圈上,尤其是上部的端部匝圈上,或者在一个步骤中镀覆,但会在其后的步骤中掉下。 [0035] Although in the case of powder coating, by repeating the operation in the most critical areas, but not easily precipitate in the end turn, especially on the upper end turn, a step or in the plating, but it will fall in a subsequent step.

[0036]根据本发明的粉末涂覆方法通过提供以下简单的一个或多个步骤解决了如此的问题。 [0036] The powder coating process according to the present invention by providing a simple step to solve one or more of such problems.

[0037]参照图3(a)、(b)和(C),在没有盘管5的壳体4的区域内,在顶部和底部处标识了两个平面Φ (即,在顶部和底部处,介于对应的盘管5起始/结束的焊接平面α和β之间的平面)。 [0037] Referring to FIG. 3 (a), (b), and (C), in the region of the housing 5 without the coil 4, the identification of the two planes Φ at the top and bottom (i.e., at the top and bottom 5 starting / plane) between the weld plane α and β between the corresponding coil end.

[0038]根据本发明的方法中优选的变体中提供了以下三个步骤,三个步骤最好按照将要列出的顺序排列。 [0038] The following three steps of the method of the present invention in a preferred variant, preferably three steps arranged in order to be listed.

[0039]参照图3(a),主步骤是在介于两个限制平面Φ之间的伸展部分Hl内涂覆粉末,该两个限制平面Φ是与盘管5的起始/结束平面β仅间距一定量的两个平面,该一定的间距量需能确保喷枪能够将粉末涂覆到盘管5全部表面上所需要的量,盘管5的全部表面包括最外匝圈的相应的上部和下部表面。 [0039] Referring to FIG. 3 (a), the main step in the extending portion interposed between the two limiting surfaces Φ Hl coating powder, [Phi] is the limiting surfaces of the two coil 5 with the starting / end plane β only a certain amount of spacing the two planes, for an amount of the constant pitch to ensure that the gun can be applied to the powder on the surface of the disc 5 the entire amount required pipe, respective upper coil 5 comprises the entire surface of the outermost turns of the and lower surfaces.

[0040]例如,根据优选的实施例,所述限制平面Φ与盘管5的起始/结束平面β间距大致等于30mm的距离;所述测量值允许粉末均匀地和完全地沉淀在盘管表面上。 [0040] For example, according to a preferred embodiment, the restriction Φ plane coil 5 and start / end plane β is substantially equal to the pitch distance of 30mm; the measurement values ​​allow powder is uniformly and completely precipitated in the surface coil on.

[0041] 参照图3(b),补充步骤包括在伸展部分H2内涂覆粉末,该伸展部分H2介于上部限制平面Φ和直至如上所述上部端部平面k的上部盖子2内部之间。 [0041] Referring to FIG. 3 (b), comprises a supplementary step portion extending between the inner coating powder H2, H2 between the upper part of the extension limit and the upper end plane Φ k plane as described above until the interior of the upper cover 2.

[0042] 例如,根据优选的实施例,所述上部端部平面k与上部盖子2的顶部间距大约20mm。 [0042] For example, according to a preferred embodiment, the upper end portion of the upper cover top plane k pitch of approximately 20mm 2.

[0043]参照图3(c),另一补充步骤是在伸展部分H3内涂覆粉末,该伸展部分H3介于下部限制平面Φ和直至如上所述下部端部平面k的下部盖子2内部之间。 [0043] Referring to FIG. 3 (c), a further step is added in the coating powder H3 extending portion, the extending portion interposed between a lower limit plane H3 and Φ as described above until a lower end portion of a lower plane of the second inner cap k between.

[0044] 例如,根据优选的实施例,下部限制平面Φ与下部盖子2的底部间距大约40mm。 [0044] For example, according to a preferred embodiment, the lower limit plane and the lower bottom of the cover Φ pitch of about 40mm 2. 在该情形中,相对于上部端部平面k和上部盖子2顶部之间的相类似距离,下部限制平面Φ离下部杯2相隔更远。 In this case, with respect to the similar distance between the upper end plane and the top of the upper lid 2 k, the lower limit plane Φ 2 further apart from the lower cup. 因为粉末借助于重力落下,并均匀地沉淀在所述下部杯2的表面上。 Because the powder falls by gravity, and uniformly precipitated on the surface of the lower portion 2 of the cup.

[0045]如上所指出的,根据本发明的方法提供了主步骤(如图3(a)所示),其中,粉末分配喷枪完全延伸通过涉及盘管5的伸展部分Hl,在该盘管5的上方和下方留有余量,刚好足以确保用粉末涂覆全部的盘管5。 [0045] As indicated above, it provides a main step (FIG. 3 (a) below) according to the method of the present invention, wherein the powder dispensing gun relates to extend completely through the extending portion Hl coil 5, the coil 5 above and below the left margin, using just enough to ensure that all of the powder coating coil 5.

[0046]如上所述,根据借助于非限制性实例给出的优选的实施例,在盘管5的上方和下方所述余量大致等于30mm。 [0046] As described above, according to the preferred embodiment by way of non-limiting example is substantially equal to 30mm above and below the balance coil 5.

[0047]除了该主步骤之外,还可有其他可能的补充步骤,其中,避免将粉末沉淀在盘管5上;即,在这些可能的补充步骤中,喷枪不将粉末分配在先前已经操作过的伸展部分Hl上。 [0047] In addition to the primary step, there may be other possible additional step in which, to avoid precipitation of the powder in the coil 5; i.e., these possible additional step, the powder dispensing gun not previously been operated extending through the upper portion of Hl.

[0048]已经指出,其中喷枪不在伸展部分Hl内分配粉末的补充步骤只是可供选择的选项,不是强制的步骤,因为尽管只有伸展部分Hl已经处理过,但如果盖子充分地受压缩,或盘管5充分地靠近它们,则主步骤也可足以用粉末令人满意地涂覆一个或两个盖子2的全部内表面。 [0048] have pointed out, wherein the step of dispensing the powder spray gun complementary inner portion Hl stretching step is not mandatory but is not an alternative option, because although only a portion extending Hl has been treated, but if the lid is sufficiently compressed, or disks tube 5 is sufficiently close to them, the main step may be sufficient to satisfactorily with a powder coating or the entire inner surface of the lid 2 two.

[0049]从以上的描述中可推断出,根据本发明方法的特征是这样的特征:除了不可避免的略微交叠每个涂覆伸展部分Hl、H2和H3,基本上不提供将粉末沉淀到在之前的步骤中已有粉末沉淀的那些位置的步骤。 [0049] be inferred from the above description, the method according to the present invention is characterized: in addition to unavoidable slight overlap each coating run portion Hl, H2 and H3, substantially no powder will settle to the step those positions in the previous step, the powder has been precipitated.

[0050]为简化起见,已经参照设置有单一盘管5的储罐I说明了本发明,但本发明可明确地一般化而推广到设置有一个或多个盘管的储罐I,规定根据本发明的方法提供以下步骤: [0050] For simplicity, the tank has been provided with reference to a single coil 5 I illustrate the present invention, but the present invention can be generalized and extended to clear the tank is provided with one or more I coils, according to a predetermined the method of the present invention provides the following steps:

[0051]-如所述盘管5数量一样多的主步骤,在每个主步骤中,粉末只分配到仅涉及对应盘管5的垂直伸展部分,在该盘管5的上方和下方留有余量,刚好足以确保用粉末完全涂覆, [0051] - as many as the number of the primary coil 5 steps, in each step in the main, relates only to the powder dispensing only vertically extending portions corresponding to the coil 5, the left above and below the coil 5 balance, just enough to ensure complete coating powder,

[0052]-多个可选的补充步骤,每个补充步骤目标在于将粉末涂覆在未在主步骤中充分涂覆的对应伸展部分内。 [0052] - a plurality of optional additional step, each supplementary step is not certain that the main step in the fully extended corresponding to the coated powder coating inner portion.

[0053]较佳地,在涉及两个连续盘管5的两个主步骤中未被足够粉末达到的每个伸展部分可在单个补充步骤中完全涂覆。 [0053] Preferably, the powder is not sufficient to reach each of the extending portion may be entirely coated in a single two supplementary step involves two main steps in a continuous coil 5.

[0054]根据本发明,一个或多个主步骤和任何补充步骤不一定特别依时间前后排列的顺序彼此跟随,如果需要的话,第二个步骤可放置在第一个步骤之前。 [0054] According to the invention, one or more of the main steps, and any special additional steps are not necessarily arranged in sequence around the time follow each other, if desired, may be placed in the second step before the first step.

[0055]业已发现,根据本发明,通过唯独地实施涂覆搪瓷粉末的步骤,便可获得理想限值之内的上釉厚度,在粉末沉淀之后的那些步骤过程中,在任何区域内没有落下的粉末。 [0055] It has been found, according to the present invention, the step of exclusively, enamel powder coating embodiment, the thickness of the inner glazing can be obtained over the limit, the precipitated powder after those steps of the process, does not in any area falling powder.

[0056]然而,可以指出的是,与已知技术相比,根据本发明方法提供的步骤的数量被减少了。 [0056] However, it may be noted that, compared to the known art, the number of steps of the method according to the present invention provides is reduced.

[0057]这转换为处理时间相当地减少,例如,在编程分配喷枪的运动(该运动显然是机器人化的)、每次通过时分配的粉末量、粉末的电荷量、施加的电场等方面,使得过程的每个步骤调谐更加容易。 [0057] This conversion processing time to be considerably reduced, for example, sports programming in the dispensing gun (apparently the movement of the robot), the amount of powder dispensed aspect each time through the powder charge amount, the electric field applied and the like, each step of the process so that the tuning much easier.

[0058]除了如图所示的圆筒形储罐I之外,本发明还适用于设置有盘管5的球形或椭球形的形状,其轴线基本上平行于它可在内部移动所依据的轴线,分配喷枪穿透开口8。 [0058] In addition to the cylindrical tank shown in FIG. I, the present invention is also applicable to a coil provided with a spherical or elliptical shape 5, which is substantially parallel to its axis may be moved within relied axis of the lance penetration dispensing opening 8. 事实上,如此几何形的储罐甚至能够使如下的步骤成为可能:其中粉末分配喷枪完全延伸通过如上所述的伸展部分Hl的步骤;以及其中如此伸展部分Hl被喷枪忽略的任何其他步骤。 In fact, the tank geometry such that the following steps can be even possible: wherein the step of powder dispensing lance extends completely through the extending portion Hl as described above; and Hl any other step portions are ignored wherein the lance extends so.

[0059]显然,根据本发明的方法特别适用于涂覆玻璃类型的上釉,其中,厚度控制是基本要求,否则在运行过程中会有搪瓷间隙。 [0059] Obviously, the method according to the present invention is particularly suitable for coating glass glazing type, wherein the thickness control is a fundamental requirement, otherwise there will be gaps during operation enamel.

[0060]依照一般要求,该方法容易地做到使玻璃型上釉的厚度在180和500μπι之间。 [0060] In accordance with the general requirements, to make the method easily done between 180 and 500μπι thickness glass glazing type.

[0061]然而,该方法完全适用于任何粉末的静电涂覆,还适用于聚合物特性粉末的涂覆,其中,过度的厚度不会影响腐蚀保护的可靠性,但构成了材料的浪费。 [0061] However, this method is fully applicable to any electrostatic powder coating, the polymer coating is also applicable to the characteristics of the powder, wherein an excessive thickness does not affect the reliability of the corrosion protection, but constitute a waste of material.

Claims (9)

  1. 1.用于金属储罐(I)的静电粉末涂覆方法,储罐内部设有也是金属的一个或多个盘管的热交换器(5),所述热交换器通过焊接到该储罐(I)的壁上而固定住并被限制在盘管的两个起始/结束平面⑴)之间, 其特征在于, 所述方法包括: -与所述热交换器(5)同样多的主步骤,在每个所述主步骤中,粉末只分配到仅涉及所述热交换器(5)的对应的一个的垂直伸展部分(Hl),在对应的所述热交换器(5)的上方和下方留有余地量,刚好足以确保用粉末完全涂覆, -多个可供选择的补充步骤,每个补充步骤目标在于将粉末涂覆在未在所述主步骤中充分涂覆的对应伸展部分(Η2;Η3)内。 A method for electrostatic powder coating a metal tank (I), the interior of the tank is provided with one or more metal heat exchanger coils (5), by welding the heat exchanger to the storage tank (I) and the fixed wall between the two and limits the start / end ⑴ planar) coil, wherein the method comprises: - the heat exchanger (5) as many main step, in each of said main step, the powder is only assigned to only relates to the heat exchanger (5) in a vertical extending portion (on Hl) corresponding to the corresponding heat exchanger (5) above and below the amount of leeway, just enough to ensure complete coating of the powder, - a plurality of selectable additional step, each target supplementary step wherein the powder coating is not sufficiently applied to the corresponding main step extending portion; inner (Η2 Η3).
  2. 2.如权利要求1所述的静电涂覆方法,其特征在于,在涉及两个连续所述盘管(5)的两个所述主步骤中,未被足够的粉末到达的每个伸展部分,在单个所述补充步骤中完全地被涂覆。 2. The electrostatic coating method according to claim 1, characterized in that each of said two portions extending main step involves two consecutive said coil (5), the powder is not sufficient to reach , completely coated in a single step in the supplemental.
  3. 3.如前述权利要求所述的静电涂覆方法,其特征在于,所述可供选择的补充步骤包括这样的步骤,其中,所述分配喷枪延伸通过直达上部盖子(2)的足够内部的位置的伸展部分(Η2),以用粉末涂覆该上部盖子(2)的全部内表面。 3. The electrostatic coating method of the preceding claim, characterized in that said supplementary step for selecting comprises a step, wherein the dispensing position by the lance extends directly inside the upper cover enough (2) the extending portion (Η2), to coat the entire inner surface of the upper cover (2) is a powder.
  4. 4.如任何前述权利要求所述的静电涂覆方法,其特征在于,所述可供选择的补充步骤包括这样的步骤,其中,所述分配喷枪延伸通过向下直达下部盖子(2)的足够内部的位置的伸展部分(Η3),以用粉末涂覆该下部盖子(2)的全部内表面。 4. The electrostatic coating method according to any preceding claim, wherein the step of selecting the alternative complement comprises a step, wherein said direct distribution lance extends downwardly through the lower portion of the cover (2) sufficient position inside the extending portion (Η3), to coat the entire inner surface of the lower cap (2) is a powder.
  5. 5.如任何前述权利要求所述的静电涂覆方法,其特征在于,所述金属储罐(I)是包括壳体(4)的圆筒形储罐。 The electrostatic coating method as claimed in any preceding claim, wherein the metal tank (I) comprising a housing (4) of the cylindrical tank.
  6. 6.如任何前述权利要求所述的静电涂覆方法,其特征在于,所述储罐(I)和所述盘管(5)的金属是钢制的。 6. The electrostatic coating method as claimed in any of the preceding claims, wherein the metal of the tank (I) and the coil (5) is made of steel.
  7. 7.如任何前述权利要求所述的静电涂覆方法,其特征在于,所述静电粉末涂覆包括玻璃型搪瓷的静电粉末上釉。 7. The electrostatic coating method as claimed in any preceding claim, wherein the electrostatic powder coating comprising a powder of glass type electrostatic enamel glazing.
  8. 8.如前述权利要求所述的静电涂覆方法,其特征在于,所获得的上釉厚度在180和500μm之间。 8. The electrostatic coating method of the preceding claims, characterized in that the thickness of the glazing between the obtained at 180 and 500μm.
  9. 9.用来盛放水或类似流体并内部设有也是金属的盘管的热交换器(5)的金属储罐(I),其特征在于,它用一个或多个如前述权利要求所述的方法,在内部进行涂刷或上釉。 9. The fluid or the like for holding water, and is internally provided with a metal heat exchanger coil (5) of the metal tank (the I), characterized in that it uses one or more of the preceding claims A method, brushing or within the glazing.
CN 201610082662 2015-02-09 2016-02-05 A coil heat exchanger is provided with a metal coating tank CN105855082B (en)

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EP0640697A1 (en) * 1993-06-05 1995-03-01 Joh. Vaillant GmbH u. Co. Water tank and procedure for its fabrication
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DE202011051419U1 (en) * 2011-09-22 2013-01-08 Frauenthal Deutschland Gmbh Plant for the production of a pressure vessel, and thus created print container, in particular compressed air tank
CN102892927A (en) * 2009-11-30 2013-01-23 日本油漆株式会社 Anti-corrosion treatment method for aluminium heat exchanger

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DE19515425C2 (en) * 1994-04-28 2002-03-28 Vaillant Joh Gmbh & Co Inner enamelled storage vessel for a water reservoir and process for its preparation

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Publication number Priority date Publication date Assignee Title
US3207358A (en) * 1961-07-27 1965-09-21 Gen Electric Water storage tanks and methods of making the same
DE1812031A1 (en) * 1968-11-30 1970-06-18 Franz Woellhaf Coating surfaces of bulky objects with - plastic
CN1093302A (en) * 1992-12-23 1994-10-12 希蒙特公司 Process for coating the inside surface of metal containers with polyolefin materials
EP0640697A1 (en) * 1993-06-05 1995-03-01 Joh. Vaillant GmbH u. Co. Water tank and procedure for its fabrication
CN1237484A (en) * 1998-06-02 1999-12-08 黑田精工株式会社 Method for electrostatic coating metallic cylindrical body
CN102892927A (en) * 2009-11-30 2013-01-23 日本油漆株式会社 Anti-corrosion treatment method for aluminium heat exchanger
DE202011051419U1 (en) * 2011-09-22 2013-01-08 Frauenthal Deutschland Gmbh Plant for the production of a pressure vessel, and thus created print container, in particular compressed air tank

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