路沿石模具形状复杂,精度要求高,制造周期长,模具的加工费远远超过模具的材料费用,这种模具也应采用高性能的材料制造。高应力的路沿石模具采用高性能的材料制造,并可用廉价的表面强化技术提高其耐用度。零件产量不大的模具,形状简单、应力小、容易制造的模具,经常改形的模具,可用普通钢、铸铁甚至非金属制造。模具选材应结合国家资源,选用我国富有元素的钢号。 The shape of the roadway stone mould is complex, the precision is high, the manufacturing cycle is long, the processing fee of the mould is far beyond the material cost of the mould. The mould should also be made of high performance materials. High - stress roadbed moulds are made of high performance materials and can be used to enhance their durability with cheap surface reinforcement. The mould with small output, simple shape, small stress and easy to make, often modified mould, can be made of ordinary steel, cast iron or even non-metal. The selection of the mould should be based on the national resources. 　　路沿石模具在工作中除了要求基体具有足够高的强度和韧性的合理配合外,其表面性能对模具的工作性能和使用寿命至关重要。这些表面性能指:耐磨损性能、耐腐蚀性能、摩擦系数、疲劳性能等。这些性能的改善,单纯依赖基体材料的改进和提高是非常有限的,也是不经济的,而通过表面处理技术,往往可以收到事半功倍的效果,这也正是表面处理技术得到迅速发展的原因。 In addition to the reasonable combination of high strength and toughness, the surface performance of the roadbed is of great importance to the working performance and service life of the mould. These surface properties: wear resistance, corrosion resistance, friction coefficient, fatigue property, etc. The improvement of the performance, to improve and improve of relying on a substrate material is very limited, also not economic, and through the surface processing technology, often can get twice the result with half the effort, which is surface treatment technology has been developed rapidly.