How to design a shielded enclosure?如何设计一个屏蔽室？

Make a choice做一个选择

The cheapest materials for electromagnetic shielding are galvanized steel and aluminum. Approximately 90% of the cabinets and enclosures are today made of these materials. For that reason we have a special material (Amucor Shield) very well developed is compatible with both. When the ceclosure is used in a corrosive atmosphere is better to remove it from stainless steel, brass, or aluminum chromate layer (alochroom 1200).

用于电磁屏蔽最便宜的材料是镀锌钢板和铝。今天大约有90%的机柜和屏蔽室是由这些材料制造的。为了这个原因我们有一个特殊的材料(Amucor Shield) 被开发出来非常好的与这两者一致。当屏蔽室被使用在一个腐蚀性空气里时最好的移开它从不锈钢，黄铜，或铝铬酸盐层(alochroom 1200)。

Corrosion protection is close to the sea (salt) and in outdoor applications is very important. Important that the gaskets electrically well the materials you are using. Request our free advice to any overseers.

防腐是靠近海（盐）和在户外应用是非常重要的。重要的是你使用的垫圈是电性能良好的材料。

It is best to get them in a salty atmosphere within 0.3 volts and 0.5 volts in a wet atmosphere to hold the see table of values measured against galvanic silver.

在含盐空气环境获得它们最好是在0.3V和0.5V以内在一个潮湿空气环境里获取它们看表的测量值以防电化银。

Thickness of enclosure material壳体材料的厚度

A thickness of 0.1mm will be enough for an efficient shielding above 1MHz. Only at low frequencies such as 10KHz and less important to well-magnetic conductive materials and thicker material. EMP example a military bunker, from 6mm thick material produced. This is because these scenes should be about 10 KHz and 80dB. Must also blocking at 50Hz be considered concentrated metal layers and special materials as Mu and Mu-ferrous metal. This application is to delimit the areas of the transformer to reduce health risks for humans and machines work without any failure.

一个0.1mm的厚度是足够用于1MHz以上的有效的屏蔽。仅仅在低频如10KHz，对于好的磁导材料和更厚的材料的重要性是更少的。EMP的例子一个军用掩体，从6mm厚的材料产生的。这是因为这些地点应该是大约10 KHz和80dB。必须也封闭在50Hz被推荐给金属层，特殊的材料如钼和钼-铁氧体金属。这个的应用是限定变压器的区域以减少对人类的健康危险和机器工作没有故障。

Openings in enclosure机壳的开口

Especially at frequencies above 5KHz is important to prevent gaps in the enclosure. The high frequencies like 100MHz to 40GHz are very sensitive to small gaps in the enclosure. The higher the frequency the more attention should be paid to holes in the shield to avoid it. It is therefore important to use flexible gaskets. The gaskets should not only very well conductive but also a good electrical contact with low compression force can generate.

特别频率在5KHz以上防范在机壳里的间隙是重要的。高频如100MHz到40GHz是对机壳里的小间隙非常敏感的。更高的频率要更应注意这些间隙通过屏蔽以消除它。这是因此重要的要使用柔软的垫圈。该垫圈应不仅有非常好的导电性而且有一个好的用低的压力能产生电接触。

Fastener of mounts/hinges/locks装配的紧固件/铰链/锁

We have special resilient gaskets such as Ultra Soft Shield designed. They prevent the bending between the attachment points of the hinges so not too heavy a draft of a case is possible. Also this cheaper fasteners, hinges and locks as well as with thinner sheet material is not permitted, which saves cost much.

我们有特殊的弹性垫圈，如超软屏蔽设计的。它们防止在铰链的附着点之间弯曲，因此不太重。而且这个更便宜的紧固件、铰链和锁也用更薄的钢板是不被允许的，节省更多成本。

To give you an idea what type of gasket can fit on the stiffness scale on the vertical structure of your choice. The distance form the anchor points on the horizontal scale. At the intersection of both, you can find a recommended packing. Your drawing is better to send our specialists. They see every day more than 60 different designs and to specialize in giving you the right. This is generally free of charge.

It is important for us to know what type of material used and the amount necessary to help you quickly. Numbers may vary from our opinion 1 to 1000000 pcs.