Stainless steel micro-hole plate, as its name suggests, is to machine tiny holes in stainless steel or other materials. The micro hole processing methods include micro hole laser drilling, micro hole etching processing, micro hole punching processing, and micro hole electric spark drilling. Micro-hole processing products are widely used in precision filtration equipment such as gas-liquid filtration or solid-liquid filtration, such as: soya-bean milk machine filter, engine filter, granulator without net die filter plate, filter press filter plate, oil slurry filtration Net, chemical filter, medium concave die forming net, etc.
At present, micro-hole plate products have been widely used in precision filtration equipment, chemical fiber spinnerets, jet engine nozzles, electronic computer print heads, printed circuit boards, TV shields, planetarium star plates, aviation gyro instrument components, aircraft turbines. Processing of parts such as blades and red blood cell filter in medical devices. According to the size range of the micro-holes, there are dozens of kinds so far, and each processing method has its own special advantages and disadvantages, which mainly depends on the size of the hole to be processed, the arrangement of the holes, and the hole Density, hole accuracy requirements, and the need to consider the subsequent use of the workpiece, which involves the consideration of which process can be processed in batches.
Conventional or imaginable micro hole processing techniques are:
1. Stamping processing, stamping processing is mainly for products with a hole diameter of 1.0mm or more and a material thickness of 0.5mm or less, and mainly for workpieces with a small number of holes, because the intensive workpiece stamping die cannot be completed.
2, CNC punching processing, CNC punching is a popular process in recent years, CNC punching has the advantages of high efficiency and low cost, CNC punching needs to replace the corresponding punch to operate, no need for mold. The CNC punch is mainly for large-aperture and low-density workpieces. There is no advantage for NC punching of workpieces with an aperture of less than 0.5 mm.
3, chemical etching processing, chemical etching process is more suitable for processing some micro-hole workpieces with dense mesh and high tolerance requirements. The processed hole wall has no burrs, uniform aperture and good roundness. When such dense or non-dense microporous products require mass production, the etching process can also be actively addressed.
The company focuses on the processing of etched micro-holes. The material used for etching micro-holes is metal. It is mainly made of stainless steel 304 and copper and copper alloy. Stainless steel etching micro-hole processing mainly pays attention to the following parameters: etching process When performing micro hole processing, it is required to be limited by the thickness of the material. Under normal circumstances, the pore size of the micro hole to be processed is more than 1.5 times the thickness of the material used. If the material thickness is larger than the pore size of the micro hole opening, the etching process is not applicable to the processing of the micro hole. Because the expansion of the chemical etching agent under this condition cannot satisfy the etching amount. If the micro hole is processed by the etching process, it is required to make a relatively thick metal material. At this time, the micro hole diameter is usually smaller than the material thickness. How do you process this time? This kind of situation can be processed. In this case, only the tapered hole (also called the horn hole) is used, that is, the apertures on both sides of the material are large and small. The film is also different from the usual opening holes. The hole diameter of the large hole surface also needs to be 1.5 times larger than the thickness of the material. The hole diameter of the small hole surface can be smaller than the thickness of the material, and cannot be lower than the thickness of the material (that is, 1/2).