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不鏽鋼裝飾蝕刻技術?Stainless steel decorative etching technology?

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不鏽鋼裝飾蝕刻技術?Stainless steel decorative etching technology?

發布日期:2018-06-15 作者:www.tonertimes.com 點擊:

     不鏽鋼表麵化學蝕刻圖案文字的工藝原理,是絲印印刷抗酸或耐堿油墨將不鏽鋼蝕刻板表麵不被蝕刻的部分遮蓋,屏蔽蝕刻液,使蝕刻液隻能接觸要蝕除部分的表麵,從麵達到蝕刻花紋圖案和文字的目的,細分又分為陽版蝕刻和陰版蝕刻,陽版蝕刻是將要加工的圖案花紋留下,而將其餘的大麵全部蝕除,這樣花紋圖案即凸出表麵而呈現微浮雕效果。陰版蝕刻正好相反,是將要花紋圖案部分蝕除使其凹陷而達到蝕刻裝飾目的。

     不鏽鋼蝕刻板工藝路線一般由以下部份依次組成:不鏽鋼表麵淨化處理,印刷抗酸油墨,蝕刻,去膜層,烘烤,上漆,烘烤,腹膜,剪切,等。

    一般不鏽鋼表麵為8K光麵或直紋拉絲麵,有201型號和304型號,在製售過程中,一般表麵都加封一層保護性油酯,而要使阻蝕層能良好地附著,必須將油脂層除去,除油過程依製作的不同要求可用電解除油,汽油或氯化溶劑擦拭,堿+表麵活性劑熱煮等方式去除,其中以陰陽極混合電解除油產效果Z好,以溶劑擦拭除油後表麵會殘存微量油脂,Z好以電解或堿煮的方式進一步去除殘油以保證阻蝕層良好附著,除油的好壞直接影響後部加工過程及成品質量。

     除完油後,在不鏽鋼表麵製作阻蝕層,其做法一般可分為三種,一種作法為不幹膠刻圖做為阻蝕層,用電腦將不幹膠刻繪出圖案文字,將刻好圖案的不幹膠粘帖於不鏽鋼表麵上,手工去除要蝕除部分的不幹膠,讓金屬表麵露出,以沒去除的不幹膠做為阻蝕層。這種方式較適合加工圖案簡單或文字不多的,要求不是很高的場合,其操作簡單,不用太多專業技能,加工成本亦較低。但對於圖案複雜,文字很多或蝕刻要求較高的場合,由於其工藝限製,加工成本徒增且很難達到精度要求。

      第二種方法是以絲網印刷方式製作阻蝕層,即絲印抗蝕刻油墨,用油墨將不蝕刻部分遮蓋,以達到屏蔽酸液的目的,這種方式比較適合用於精度要求不太高且同一圖安加工批量較大的蝕刻做業,其優點是加工速度快,成本低,圖文邊緣易整齊,適合批量加工。不足之處是需要絲印技能,要求印後盡量沒有針孔或蹭色,如出現大量針孔可有蹭色現象,需返工重印。因在印刷前要製作絲網版,不適合單版批量少的做業。

      第三種方式是光刻製作阻蝕層,以特種感光油墨覆蓋不鏽鋼表麵,通過照像曬版,顯影,定影等工序在不鏽鋼表麵形成抗蝕塗層,其優點圖案精度高,可以做到零誤差,即與設計出的圖案完全吻合,是要求加工精度高及板間精準對圖的做業的首選加工方式,對小批量做業,由於省去了絲網製版操作,成本較絲印為低。不足之處是需要專用絲印及曬版設備及較高的專業技能,且對同一圖案批量較大的做業,其做業速度明顯較絲網印刷低,從而使整體做業成本增加。


     以上是製作阻蝕層的常用方法,做業時可根據實際情況選用其中的一種或多種合用,以達到事半功倍的目的。


     陰蝕層做好後就可進入蝕刻工序,蝕刻又可分為手工擦拭蝕刻,手工潑澆蝕刻,搖床蝕刻,機械潑澆蝕刻,熱壓噴淋蝕刻,搖擺噴淋蝕刻等,手要擦拭和潑澆蝕刻,是將酸蝕液(如王水,次氯酸鈉,過氧化氫,三氯化鐵,硝酸鐵等的酸性溶液)以擦拭或人工潑澆的方式塗(潑)於待蝕刻表麵,使露出的金屬表麵溶蝕,以離子形式進入溶液,從而達到蝕刻的目的,其優點是加工靈活,不受場地和被蝕物形狀的限製,不足之處是勞動強度大(特別是大量加工時),空氣汙染嚴重,易造成人體傷害,精度不高,蝕刻均勻性難以掌握,易出流痕。搖床蝕刻是手工蝕刻的改進,即以電機拖帶蝕刻槽搖擺,而達到使酸與金屬表麵接觸處換液的目的完成蝕刻做業,改進之處隻在於減少了人員的勞動強度和人與酸液接觸的次數。而如王水,過氧化氫等與不鏽鋼反應激烈的酸液不宜用搖擺床,否則會由於溫升無法控製酸液暴沸(爆炸)飛濺而出現危險.

     機械潑澆式蝕刻目前主要於用特種作業,是目前蝕刻深度0.3-1.5mm是較為理想的蝕刻方式,如燙金模版印刷折光壓紋加工時,配合甲脒與硫脲的阻蝕做用與機械潑澆衝壓,借物理學與熱力學的原理,達到深度蝕刻陽版圖案,且以適當的坡度保證圖文在應用過程中可承受足夠的壓力。

    噴淋等離子刻蝕機是目前蝕刻較為理想的蝕刻方式,其原理是以機械泵將加熱的蝕刻液加壓後均勻地噴於不鏽鋼表麵,借助噴壓及時去除蝕刻產物阻檔層,使蝕刻能順利進行,而加熱的蝕刻液可保證蝕刻做業的正常快速,一般酸液都是在蝕刻機內做業,空氣汙染少,反應溫合易控,蝕刻麵均勻幹淨,但這種方法,隻能用在標牌不鏽鋼裝飾,它隻能蝕刻0.3mm以上,如果深就會側扣,字體縮小,對深壓紋版蝕刻較深的機械潑澆蝕刻比較理想

1.用於腐蝕鋼板。 

2.使用時用機械潑澆蝕刻鋼板裸露圖文處。 

3.腐蝕速度快,腐蝕效果好。 

4.能有效保護鋼板坡度和側蝕,形成良好的網點邊緣。

    300係列不鏽鋼可以達到蝕刻後表麵潔白均勻的裝飾效果。不足之處是要用專業的蝕刻機,對蝕刻工員作業技能要求高,一般隻能做平板蝕刻。    

     經蝕刻做業後,金屬表麵裸露部分被充分溶蝕,形成凹陷,表麵有阻蝕層的部分凸起,從麵形成裝飾花紋,下一步即是將阻蝕層去除,使整體金屬表麵全部顯露出來,對不幹膠阻蝕層來說,隻是人工將不幹膠層扯掉即可,對於絲網印刷的圖案,可根據絲印圖層的本體屬性選用有機溶劑或堿水去除,對光刻阻蝕層,可以火堿的熱水溶液煮除。

     阻蝕層去除後,蝕刻工作即告完成,後部可依客戶要求進一步加工,如一般用於標牌加工時,蝕刻完要進行填漆工作,卓創科技的上色機,所用的是陰極電泳漆有保護的地方不會有漆,然後退去保護膜,電泳上色機適合大批量顏色較單一產品生產,或以注射器將漆填於需要填漆處,漆幹後以有機溶劑除去多餘的漆,噴塗或不噴罩光漆。後清麵包裝,還有其它的上色方法,可以谘詢浙江杭州卓創科技。

    根據以上的實踐操作積累的經驗,請你們務必選對機器來做不鏽鋼板。以免選錯造成不必要的金錢和時間損失。

    彩色不鏽鋼蝕刻板是在物件表麵通過化學的方法,腐蝕出各種花紋圖案。以8K鏡麵板為底板,進行蝕刻處理後,對物體表麵再進行深加工,可進行局部的和紋,拉絲,嵌金,局部鈦金等各式複雜工藝處理,實現圖案明暗相間,色彩絢麗的效果。蝕刻不鏽鋼包括彩色不鏽鋼蝕刻,圖案多種,可供廣大選用的顏色有:鈦黑(黑鈦)、天藍、鈦金、寶石藍、咖啡色、茶色、紫色、古銅、青古銅,香檳金,玫瑰金、紫紅、鈦白、翠綠、綠色等,適用於:星級酒店,KTV,大型商場,高級娛樂場所等。

                                                     Stainless steel decorative etching technology?

       The process principle of chemical etching pattern and characters on stainless steel surface is that the surface of stainless steel etching plate is not covered by the etching part by the anti acid or alkali resistant ink of silk screen printing, and the etching solution is shielded, so that the etching solution can only contact the surface of the part to be etched, so as to achieve the purpose of etching pattern and characters from the surface, which is subdivided into positive etching and negative etching. Positive etching is the figure to be processed The pattern is left behind, and the rest of the large surface is completely removed, so that the pattern protrudes from the surface and presents a micro relief effect. On the contrary, etching of the stencil is to remove the part of the pattern to make it concave and achieve the purpose of etching decoration. 

      Stainless steel etching process generally consists of the following parts in turn: stainless steel surface purification treatment, printing acid resistant ink, etching, film removal, baking, painting, baking, peritoneum, shearing, etc. 

     In general, the stainless steel surface is 8K smooth surface or straight line drawing surface, with models 201 and 304. In the process of production and sale, the surface is generally sealed with a protective oil ester. In order to make the corrosion resistant layer adhere well, the oil layer must be removed. According to the different requirements of production, the oil can be removed by electrolytic oil removal, gasoline or chlorinated solvent wiping, alkali + surfactant hot boiling, etc The mixed electrolysis of anode and cathode is the best way to remove oil. After wiping oil with solvent, there will be residual oil on the surface. It is better to further remove residual oil by electrolysis or alkali boiling to ensure good adhesion of corrosion resistant layer. The quality of oil removal directly affects the processing process and product quality. 

    After oil removal, the anticorrosive layer is made on the surface of stainless steel, which can be divided into three methods. One method is to use the adhesive engraving as the anticorrosive layer, use the computer to carve out the pattern text, stick the adhesive with the pattern on the surface of stainless steel, remove the adhesive to be removed manually, expose the metal surface, and use the adhesive not removed as the anticorrosive layer. This method is more suitable for the occasions where the processing pattern is simple or there are not many words, and the requirements are not very high. The operation is simple, there are not too many professional skills, and the processing cost is also low. However, in the case of complex patterns, many characters or high etching requirements, due to its technological limitations, the processing cost increases dramatically and it is difficult to meet the accuracy requirements. 

   The second method is to make the resist layer by screen printing, i.e. screen printing resist etching ink, which covers the non etching part with ink, so as to achieve the purpose of shielding the acid solution. This method is more suitable for the etching industry with low precision requirements and large batch of the same graphic processing, which has the advantages of fast processing speed, low cost, easy and neat image and text edges, and is suitable for batch processing. The disadvantage is that silk screen printing skills are required, and as far as possible there is no pinhole or color rubbing after printing. If a large number of pinholes appear, there may be color rubbing phenomenon, which needs to be reworked and reprinted. Because before printing, it is necessary to make screen plate, which is not suitable for single plate industry with small batch. 

   The third way is to make photoresist layer, cover the stainless steel surface with special photosensitive ink, and form anticorrosive coating on the stainless steel surface through photolithography, development, fixation and other processes. It has the advantages of high pattern precision and can achieve zero error, that is to say, it is the first choice of processing method that requires high processing precision and accurate drawing between plates. For small batch Volume industry, due to the elimination of screen plate making operations, the cost is lower than screen printing. The disadvantage is that special screen printing and plate printing equipment and higher professional skills are needed, and for the same pattern with large batch production, the production speed is significantly lower than that of screen printing, so as to increase the overall production cost. 

   The above is a common method of making corrosion resistant layer. One or more of them can be used according to the actual situation to achieve the purpose of twice the result with half the effort.

   After the etching layer is finished, it can enter the etching process. The etching can be divided into manual wiping and etching, manual pouring and etching, shaking table etching, mechanical pouring and etching, hot pressing spraying and etching, swing spraying and etching, etc. the acid etching solution (such as aqua regia, sodium hypochlorite, hydrogen peroxide, ferric chloride, iron nitrate, etc.) is wiped or manually poured by hand The method is applied (splashed) on the surface to be etched to make the exposed metal surface dissolve and enter the solution in the form of ions, so as to achieve the purpose of etching. Its advantages are flexible processing, not limited by the site and the shape of the eroded object. The disadvantages are high labor intensity (especially in large-scale processing), serious air pollution, easy to cause human injury, low accuracy, and difficult to grasp the uniformity of etching Hold, easy to flow. Shaking table etching is the improvement of manual etching, that is, the motor is used to drag the etching groove to swing, so as to achieve the purpose of changing the liquid at the contact between the acid and the metal surface. The improvement is only to reduce the labor intensity of the personnel and the number of contact between the personnel and the acid. For example, aqua regia, hydrogen peroxide and other acid which reacts strongly with stainless steel should not use swing bed, otherwise it will be dangerous due to the temperature rise unable to control the acid boiling (explosion) splashing. 

   At present, mechanical sprinkling etching is mainly used in special operations. It is an ideal etching method with etching depth of 0.3-1.5mm. For example, in the process of photorefractive embossing of gilding printing, it can cooperate with the corrosion inhibition of formamidine and thiourea and mechanical sprinkling stamping to achieve deep etching of positive pattern by physics and thermodynamics, and ensure that the graphics and texts can be used in the application process with proper slope Bear enough pressure.     

  Spray plasma etching machine is an ideal etching method at present. Its principle is to spray the heated etching solution evenly on the stainless steel surface after being pressurized by a mechanical pump. With the help of spray pressure, the barrier layer of etching products can be removed in time, so that the etching can be carried out smoothly. The heated etching solution can ensure the normal and fast etching. Generally, the acid solution is used in the etching machine, with less air pollution The reaction temperature is easy to control and the etching surface is even and clean. However, this method can only be used in the stainless steel decoration of the sign. It can only be etched for more than 0.3mm. If it is deep, it will buckle at the side and the font will be reduced. It is ideal to spray etching on the deep mechanical etching of the deep embossing plate.

  1. It is used to corrode the steel plate.

  2. When using, use the machine to pour water on the exposed part of the etched steel plate.

  3. Fast corrosion speed and good corrosion effect.

  4. It can effectively protect the steel plate slope and side corrosion, and form a good network edge. 300 series stainless steel can achieve the decoration effect of even white surface after etching. The disadvantage is to use a professional etching machine, which requires a high level of operation skills for etchers. Generally, only plate etching can be done. 

     After etching, the exposed part of the metal surface is fully eroded to form a depression, and the part of the surface with the corrosion resistance layer is raised to form a decorative pattern from the surface. 

     The next step is to remove the corrosion resistance layer to make the whole metal surface all exposed. For the adhesive corrosion resistance layer, only the adhesive layer can be removed manually. For the pattern of screen printing, it can be based on the Organic solvent or alkaline water is used to remove the body property, and the photoresist layer can be boiled out by hot water solution of caustic soda.     

    After removing the corrosion resistant layer, the etching work is completed, and the rear part can be further processed according to the customer's requirements. For example, when it is generally used for label processing, the paint filling work is required after etching. The color machine of Zhuo Chuang technology uses the cathodic electrophoretic paint to protect the place where there is no paint, and then the protective film is removed. The electrophoretic color machine is suitable for the production of large quantities of single color products, or the syringe will be used to fill the paint The paint shall be filled at the place where the paint needs to be filled. After the paint is dry, the excess paint shall be removed with organic solvent, and the varnish shall be sprayed or not sprayed. You can consult Zhuocang technology of Hangzhou, Zhejiang Province for the back clear surface packaging and other coloring methods.

   According to the above experience of practical operation, you must choose the right machine to make stainless steel plate. To avoid unnecessary loss of money and time caused by wrong selection. 

   The color stainless steel etching plate is to etch various patterns on the surface of the object by chemical methods. The 8K mirror panel is used as the bottom plate, after etching treatment, the object surface is further processed, which can be processed by various complex processes such as local harmony pattern, drawing, inlaying gold, local titanium gold, etc., so as to achieve the effect of bright and dark patterns and gorgeous colors. Etching stainless steel includes color stainless steel etching with various patterns. The colors available for selection include: titanium black (black titanium), sky blue, titanium gold, sapphire blue, coffee, tea, purple, bronze, bronze, champagne gold, rose gold, purple red, titanium white, emerald green, green, etc. It is suitable for star hotels, KTV, large shopping malls, high-level entertainment places, etc.

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相關標簽:等離子刻蝕機

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