本文件规定了用于冷加工模具的等离子渗氮和后续PVD硬质涂层的方法和要求。本文件提供了必要的信息，如渗氮钢的原始结构、工艺要求、表面质量和双相PVD涂层的附着力，以创建高性能的最佳组合。

This document specifies a method and requirements for plasma nitriding and follow-up PVD hard coatings intended for use in cold-work moulds. This document provides the necessary information, such as the original structure of nitriding steels, process requirements, surface quality and adhesion of duplex PVD coatings, to create an optimal combination of high performance.