Die casting parts to go Phi Feng method

Die casting plays an important role in modern manufacturing industry, is widely used in automobile, electronics, machinery and other industries. Die casting process can produce complex shape, high precision parts, but in the production process, the casting surface will often form some phi, these phi not only affects the appearance of the casting, will also have a certain impact on the performance of the casting. Therefore, to phi become an indispensable process in die casting production.Die casting parts to go Phi Feng method.

First, what is phi fronts-Die casting parts to go Phi Feng method

Phi fronts refers to the die casting surface due to liquid metal flow and cooling contraction and other reasons for the excess metal. Phi fronts are generally divided into two kinds, one is the surface phi fronts, the other is the internal phi fronts. Surface fringing refers to the excess metal on the surface of the casting, while internal fringing refers to the excess metal inside the casting. The existence of fringe will affect the appearance of the casting quality, but also on the mechanical properties of the casting will have a certain impact.

Second, the method of going to the front

To go to the front is to improve the quality of die casting important link, at present the commonly used to go to the front of the method has the following kinds:

Mechanical to go fringe: mechanical to go fringe is the use of mechanical equipment on the surface of the casting excess fringe removal. Mechanical de-peeling methods include hand grinding, polishing machine grinding, milling machine processing. The advantages of this method is simple, low cost, but less efficient, and the casting surface quality requirements of the occasion is not applicable.
chemical dephi: chemical dephi is the use of chemical reaction on the surface of the casting excess phi to remove. Chemical de-beading methods include acid washing, alkali washing and so on. The advantage of this method is that the casting surface quality requirements are not high in the case of good results, but need to pay attention to the concentration of acid and alkali wash solution, temperature and processing time and other parameters to prevent adverse effects on the casting.
Heat treatment to go fringe: heat treatment to go fringe is the use of heat treatment process on the casting of excess internal fringe removal. Heat treatment to remove the front of the method includes annealing, normalizing and so on. The advantage of this method is no effect on the surface quality of the casting, but requires specialized equipment and technical support.
vibration to go fringe: vibration to go fringe is the use of the principle of vibration on the surface of the casting excess fringe removal. Vibration to go to the front of the method includes manual vibration, vibration table and so on. This method has the advantage of simple operation, low cost, but the effect of de-peeling is poor.

Third, to go to the sharp note

To go to Phi Feng is to improve the quality of die casting key link, in order to ensure that the effect of going to Phi Feng, need to pay attention to the following points:

choose the right way to go to Phi Feng: according to the casting material, shape and surface quality requirements, choose the right way to go to Phi Feng.
control the parameters of de-peening: in the process of de-peening, you need to strictly control the parameters, such as grinding pressure, grinding speed, concentration of pickling solution, temperature and processing time, etc., in order to ensure that the effect of de-peening.
Staff training: deburring operation needs to have certain skills and experience of the staff to carry out, so you need to train the staff to improve their operating skills and quality awareness.
quality testing: to go to the front process, the need for quality testing of castings to ensure that the effect of going to the front meets the requirements.

In short, to go to the front is an indispensable process in die casting production, through the casting surface and internal excess of the front to remove, can improve the appearance of the casting quality and mechanical properties. In order to ensure that the effect of de-peeling, need to choose the appropriate de-peeling method, strict control of de-peeling parameters, strengthen staff training and quality inspection.