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材料：模具弹簧选用高应力，高速振幅，耐热性优良，疲劳寿命长的合金钢材料。

Material: the mould springs are made by the alloy steel of higher strain、higher amplitude、heat resting、long-time used.

特点：

Point:

一、           材料形状：呈矩形截面圆角圆边形状，与一般矩形直角直边的有显著区别，弹簧在高频率工作时可以减少应力集中，提高使用寿命。

One: Shape of material: Appear as the rectangular section round edge shape which different to the rectangular cartesian straight edge. The stress concentration will be reduced when the springs are working frequently, and also raise the time of using.

二、           强化处理：弹簧经过表面强化处理，其表面组织结实，提高了应力集中点的强度，使弹簧疲劳寿命延长，对高应力，高频率有特殊效果。

Two、Surface peening :After the treatment on each spring, both of the surface tissue and the stress concentration point will be more stronger, and also extending the using time, especial for the higher stress and higher frequency condition

三、           强压处理：每只弹簧做三次或三次以上强压处理，消除了使用前的内应力，保证弹簧使用时不会发生变形，缩短，断裂等现象。

Three、Prestressing : Each spring will be prestressed by three or more times, in order to reduce the internal stress before using, keep sure that there will not be any crushed, shorten or broken appeared.

四、           使用寿命：根据弹簧的行程长度，频率来决定。

Four、Using times: Decided by the actual working condition, such as working length and the frequency.

五、公差范围：

六、           根据不同模具对弹簧特性（负荷）的不用使用要求，共分六种系列，分别采用电泳或者喷塑加工区别（色标）方便选择使用

Six：the mould springs are distinguished by the load to six color class.