The Main Limitations Of Chemical Etching

Chemical etching can only be carried out progressively based on the original surface condition of the part. Therefore, the shape and surface state of the part after chemical etching are directly related to the original shape and surface state of the part. In more cases, the processed surface after chemical etching remains completely parallel to the original initial reference surface state. The geometry of the etched edge is mainly related to the material thickness. It can be seen from these limitations that chemical etching cannot be used to process parts with complex shapes such as plates and bars with rough surfaces. For example, it is necessary to process very thin flags or shallow convexes in certain parts of complex parts. When the edge is formed, the entire geometric shape must first be processed mechanically to a certain extent, and the subsequent chemical etching is only parallel to the processed surface, etching away a layer of metal uniformly to achieve the required thickness and thickness. shape. At the same time, chemical etching cannot process the vertical side of the processed edge, and can only process an arc shape with a radius similar to the corrosion depth.

 The adhesion of the pattern anti-corrosion layer and the change in the corrosive composition during the processing will cause the corrosion coefficient to change. The geometric shape of the chemical etching edge will also have a certain deviation, and sometimes the partial cover will be relatively large. Therefore, chemical etching cannot be used to process structural parts with strict tolerance requirements.

 Another issue that must be noted is that chemical etching should not be used to add narrow and deep grooves. This is because the bubbles generated during the chemical etching reaction will accumulate under the edge of the anti-corrosion layer, and these will be blocked under the edge of the anti-corrosion layer. The bubbles under the anti-corrosion layer actually serve to separate the metal surface from the corrosive agent. As a result, it causes a very irregular corrosion and forms very uneven edges, which is very troublesome for deep processing. Although some anti-corrosion materials with good performance are soft and can easily discharge bubbles, why should they be processed? After reaching a certain depth, even the mechanical stirring method is not enough to completely discharge the bubbles on the edge of the anti-corrosion layer. An effective method for this kind of processing is to use a more time-consuming manual method to smooth the anti-corrosion layer on the edge of the pavilion. Another possible reason is the surface tension of the corrosive liquid, which also causes corrosion to fail to proceed on narrow or small radius surfaces. For groove processing with larger depth, the width is required to be no less than 4mm. For grooves or round holes with a small depth, the width or radius must be no less than 5 times the depth.

One limitation of chemical etching processing is the processing of drilling holes using chemical etching methods. Chemical etching drilling is different from mechanical methods and electrolytic methods. It cannot produce the hole shape that the latter two can process. . Since electrolytic drilling does not use corrosives, it supplies electrolyte through a straight pipe equivalent to a drill bit to drill through very hard materials. Choosing the appropriate process can drill holes with straight walls. Chemical etching drilling can only drill irregular tapered holes. For deep chemical etching drilling, the tolerance increases due to the long etching time, so chemical drilling is rarely used except in special circumstances.

BE-CU is a high-tech enterprise specializing in metal etching processing and production. The company has gathered experts in the etching industry and introduced advanced etching production lines. It can carry out precise etching processing of stainless steel, copper, iron plates, alloys and other materials according to customer needs. , you can send us pictures or samples!

The company’s products are widely used in consumer electronics, precision filtration, precision hardware, communication products, automotive precision parts filtration, decorative panels, medical equipment, aerospace, petrochemicals, military equipment, experimental scientific research, household appliances, application components and other industries.

The materials used by the company are mainly imported and can perform metal etching processing on various metal materials, mainly including SUS304, SUS301, SUS316 austenitic steel stainless steel etching series, ferritic steel, martensitic steel, and non-ferrous metals. , alloy materials, composite materials and other special materials. The thickness ranges from 0.02mm to 2.0mm. Depending on the material thickness, the minimum tolerance can be controlled to 0.01mm.

Since its establishment, BE-CU has worked hard to strive for excellence. With the integrity, pragmatism and innovative entrepreneurial spirit of all employees, BE-CU has become a leader in the etching industry in terms of technological development and innovation. The company pursues the corporate philosophy of professional management and large-scale operation, and provides users with high-quality, cost-effective stainless steel and aluminum etching sheet products with a serious, proactive, strict and efficient work style.

Current main product categories: precision etching; etching processing; metal etching processing; precision thermistors, precision filtration, medical blades, household white goods components, stainless steel filters, masks, electrode needles, charging grids, charging Needle, precision spring piece, flow channel plate, heat dissipation plate mesh, and can be perfectly combined with stamping and CNC processes to provide a total solution.

The company’s products have been unanimously recognized by customers, such as Espee Wind Power, Yellow River Hydropower New Energy, Maytag, Toshiba Home Appliances, Midea Refrigeration, Philips and other customers. Some scientific research universities such as: Tsinghua University, Fudan University, China Electronics Technology Group, Institute of Physics, Chinese Academy of Sciences, Suzhou Institute of Nanotechnology, Chinese Academy of Sciences, etc. are recognized by customers.

Faced with the increasing market requirements for precision etching products, the company continues to introduce advanced technology, talents and management experience, and has established a strong team of R&D personnel and management personnel. Since its establishment, BE-CU has developed into a large-scale enterprise with many imported high-precision corrosion production lines and ultra-precision corrosion production lines after years of hard development. At present, the etched sheet products processed and produced by our metal etching service company have won the trust and praise of our customers with first-class product quality and honest and thoughtful after-sales service.