模具工 。

41、作零件表面强化处理的目的 ， 是获得外硬内韧的效果 ， 从而得到硬度、耐磨性、韧性、耐疲劳强度的良好配合 。
模具表面强化处理方法很多 ， 表面处理的新技术工艺发展很快 。
除氮碳共渗和离子氮化、渗硼、渗铌、渗钒、表面镀硬铬和电火花强化外 ， 化学气相沉积(CVD)和物理气相沉积(PVD)已逐步采用 。
经CVD和PVD处理后 ， 模具表面覆盖一层超硬物质 ， 如TiC、TiN等 。
硬度极高、耐磨性、耐蚀性、抗黏合性很好 ， 可提高模具寿命几倍到几十倍 。
4冲模零件的制造精度对模具寿命的影响冲模制造的精度与使用寿命关系很大 ， 特别是模具表面粗糙度对模具影响很大 。
如用Crl2MoV钢制造落料模 ， 如果表面粗糙度值R =16 m时 ， 其寿命为3万 。

42、件左右 。
如经精抛光 ， 表面粗糙度值R =04 m ， 寿命可提高到45万件 。
因此 ， 对模具工作零件表面 ， 一般都要经过磨削、研磨、抛光等精加工和精细加工 。
5其他方面对模具寿命的影响(1)压力机的精度不高 ， 也易使冲模损坏 。
(2)冲模在压力机上安装的正确与否及操作者的技术水平高低 ， 对模具寿命也有很大影响 。
(3)冲模的保管和维护好坏 ， 以及使用润滑剂的情况 ， 也影响模具使用寿命 。
6结语在实际生产中 ， 对于薄板冲模使用 ， 很少出现非正常磨损的情况 。
但对于厚板冲模时则发现易出现非正常磨损 ， 我们总是针对出现的问题进行研究总结 。
因为一副冷冲模 ， 从设计、加工制造、装配、调试到安装、使用 ， 都耗费了众多工时 ， 同时冲模的凸、凹模使用 。

43、的材料 ， 大都是优质合金钢 。
因此 ， 冲模的成本都是比较高的 。
所以在生产中了解影响冲模寿命的因素及采取相应的对策来指导生产 ， 具有重大的现实意义 。
Die Life of cold stamping die and mprovementsOverview of stamping die Stamping Die - Stamping in the cold, the material (metal or non-metallic) processing into parts (or half) of a special technical equipment, called cold stamping。

44、die (commonly known as Die). Press - is at room temperature, using the die installed in the press to put pressure on the material to produce a separation or plastic deformation, and thus to obtain the necessary parts of a pressure processing method. Stamping die in the form of many, the general cate 。

45、gories according to the following main features: 1. According to the technical nature of (1) Die along the closed or open contour the material are derived from mold. If blanking die, punch die, cut off the mold, cut mode, cutting mode, split mode, etc. (2) bending mode to blank or blank sheet along。

46、a straight line (curved line) to bend, deform, and thus obtain a certain angle and shape of the workpiece in the mold. (3) The drawing die is made of the blank sheet opening hollow, or hollow pieces of further changes to the shape and size of the mold. (4) Die rough or semi-finished workpiece is con 。

47、vex according to plan, direct copy the shape of the die shape, the material itself, generate only local plastic deformation of the mold. Such as the bulging mode, reducing the die, expansion die, forming die rolling, flanging mold, plastic mold. 2. According to the degree classification process comb 。

48、ination (1) single process model in a press tour, just completed a die stamping process. (2) composite model is only one station, in a press tour, at the same station at the same time to complete more than two or two die stamping process. (3) Progressive Die (also known as the modulus of continuity) 。

49、 in the feeding direction, rough, with two or more of the station, at the press of a visit, work in different places on the completion of two or two successive Road over stamping die process. Chong called cold stamping die Die-wide. Cold stamping die is used in cold stamping die mold industry, and a 。

50、ccessories required for high-performance structural ceramic materials, preparation methods, high-performance ceramic materials, molds and accessories from the zirconium oxide and yttrium aluminum powder increases, Pr element composition, Preparation is the solution of zirconia, yttria solution, pras 。

51、eodymium oxide solution, according to a certain percentage of alumina solution when mixed liquor, ammonium bicarbonate infusion, by co-precipitation synthesis of ceramic materials, molds and accessories needed for raw materials, reaction precipitate generated by the treatment, drying, calcining and。

52、accessories by high performance ceramic mold material superfine powder, and then after forming, sintering, finishing, they will have high-performance ceramic materials, molds and accessories. Advantages of this invention is the invention made of cold stamping dies and parts and long service life, th 。

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标题：模具|模具毕业设计外文翻译( 八 )