Etching method and etching equipment selection

Etching method and etching equipment selection

1. Selection of etching method: there are two main methods of metal etching according to the contact form between the workpiece and the solution, namely spray type and soak type.There are two principles for the selection of etching methods.

Spraying etching (1) production: high efficiency, high speed, high precision, suitable for a certain batch of production, production is easy to realize automation control, but the equipment investment is big, also not appropriate to the opposite sex workpiece and large workpiece etching: immersion etching investment of equipment, etching, convenient and applicable artifacts range is wide, but is not suitable for mass production, at the same time, the immersion etching a spray type slow, efficiency is relatively low, the production process is not easy to realize automation control.

(2) workpiece shape and size: for large workpiece due to the limitation of equipment, it is difficult to use spray etching, while immersion will not be affected by the size of the workpiece.Complex shape workpiece, when the spray some parts can't spray would happen and effect are made of etching, and soak type is due to the workpiece the immerse in the etching liquid, just keep dynamic between etching liquid and artifacts, can ensure that any part of the opposite sex workpiece can be full of etching liquid and the old and new liquid liquid of continuous change, the etching to normal.

If conditions permit, spray etching is better than immersion etching in terms of efficiency or accuracy for small or nearly planar workpiece. Therefore, spray etching is preferred for workpiece with large batch size, moderate size (related to equipment) and simple planar shape.If the shape of the workpiece is large, it is difficult to use the etching machine, the shape of the workpiece is complex, batch is not large, then it is appropriate to use immersion.

2. Selection of etching equipment

No matter what kind of etching method, involve with the etching of form a complete set of equipment, for the spray type etching, need to buy the appropriate etching machine, etching machine transmission type of etching machine also has the transmission type spray etching machine, transmission type etching machine is suitable for mass production, the transmission type spray etching machine is suitable for small and medium-sized production, this type of etching machine is generally difficult to self-control, and must go to the factory make to order or to buy the equipment market, the choice of the etching machine mainly is decided by production, production mean here refers to the average daily output can be expected a period of time.

Fruit by immersion etching requires a certain volume of etching groove, etching tub materials according to the nature of the etching liquid, for alkaline etching, mostly adopt stainless steel material, and attention should be paid to have heat preservation unit, for acid etching system, can be made of PP material for large etching groove can adopt stainless steel lined with soft PP material.