紫铜垫淬火原因
紫铜垫加热后快速冷却并不是淬火，而是消除加工应力，软化工件，以便在应用时达到更加密封的作用。
一般外购的紫铜板都是冷轧的，有加工硬化，所以要处理一下。
用水冷是为了洁净表面和缩短时间，不用水冷效果一样。
紫铜垫的性能特点
紫铜垫的结构特性与上述几种垫片完全不同。由于紫铜垫在结构和材料使用的特殊性，使它与以往其他垫片相比更具特色，主要有以下几点：
压缩回弹率高、使用寿命长由于紫铜垫具有特殊构造的波齿状弹性骨架而且构成复合垫片的金属和膨胀石墨具有极其优良的耐高温、低温、老化等性能。主要克服了金属缠绕垫片散架的问题，又克服了齿形垫片、高强石墨垫片较金属绕垫片相比压缩回弹率较低的问题。
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八角垫、不锈钢齿形垫、内外环缠绕垫、紫铜垫
Copper mat mat after quenching reason copper heating cooling rapidly and quenching, but not eliminate stress, softening the processing, so that the application to the role of more seal. General outsourcing purple copper are cold rolled, processing sclerosis, so want to handle it. Use clean water to the surface and shorten the time, need not water-cooled effect as well.
The performance characteristics of copper mat cushion and the structural characteristics and making the above several gaskets is completely different. Because of copper in structure and material use cushion the particularity of make it with before other than more features, main pads have the following: compression spring rate high, long use life because of copper with special structure of the wave mat dentate elastic skeleton and constitute the gasket composite metal and expanded graphite has the extremely good resistance to high temperature, low temperature, aging performance. Main overcome metal spiral wound gasket to spread the problem, and overcome the tooth shape gasket, high-strength graphite gaskets around a metal gasket compression spring rate than the problem of low.
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Octagon gasket, stainless steel tooth-type gasket, internal and external ring winding gasket, copper pad
